阅读说明：本技术 一种钢管混凝土拱桥初应力自动化监测与控制系统 (A kind of CFST Arch Bridge initial stress automatic monitoring and control system ) 是由 解威威 叶志权 唐睿楷 *** 韩玉 李彩霞 邵羽 马文安 马文辉 郑健 梁厚燃 于 2019-09-29 设计创作，主要内容包括：本发明涉及桥梁建设技术领域,尤其是一种钢管混凝土拱桥初应力自动化监测与控制系统,包括钢管拱桥、扣索、塔架、千斤顶及控制装置,所述塔架设有两个,所述塔架背向所述钢管拱桥一侧设有锚碇,所述锚碇背向所述塔架的一侧设有撑脚,所述扣索一端布设在所述钢管拱桥上,另一端依次滑动穿设过对应的所述塔架、所述锚碇及所述撑脚,所述扣索位于所述撑脚与所述锚碇之间套设有锚具；所述千斤顶用于所述扣索的夹持固定,且一端与所述撑脚抵接,能够对所述扣索进行牵拉,以调节所述钢管拱桥的初应力；控制装置用于控制扣索的牵拉。本发明能够实时获取钢管拱桥初应力状态,并且能够实时调节钢管拱桥的初应力,保证钢管拱桥的安全性。(The present invention relates to bridge construction technical fields, especially a kind of CFST Arch Bridge initial stress automatic monitoring and control system, including steel pipe arch bridge, knotted rope, pylon, jack and control device, there are two the pylon is set, the pylon is equipped with anchorage backwards to the steel pipe arch bridge side, the anchorage is equipped with support foot backwards to the side of the pylon, described knotted rope one end is laid on the steel pipe arch bridge, the other end, which successively slides, is fed through the corresponding pylon, the anchorage and the support foot, the knotted rope is arranged with anchorage between the support foot and the anchorage；The jack is gripped for the knotted rope, and one end is abutted with the support foot, can be pulled to the knotted rope, to adjust the initial stress of the steel pipe arch bridge；Control device is used to control the drawing of knotted rope.The present invention can obtain steel pipe arch bridge initial stress state in real time, and can adjust the initial stress of steel pipe arch bridge in real time, guarantee the safety of steel pipe arch bridge.)

1. a kind of CFST Arch Bridge initial stress automatic monitoring and control system, which is characterized in that including steel pipe arch bridge (1), knotted rope (11), pylon (12), jack (2) and control device,

There are two the pylon (12) sets, and the both ends of the steel pipe arch bridge (1) are located at, the pylon (12) is backwards to described Steel pipe arch bridge (1) side is equipped with anchorage (13), and the anchorage (13) is equipped with support foot (14) backwards to the side of the pylon (12), institute Knotted rope (11) are stated equipped with more, and are uniformly distributed along the arch of the steel pipe arch bridge (1), described knotted rope (11) one end is laid in On the steel pipe arch bridge (1), the other end, which successively slides, is fed through the corresponding pylon (12), the anchorage (13) and the support Foot (14), the knotted rope (11) are arranged with anchorage (15), the anchorage between the support foot (14) and the anchorage (13) (15) with anchor ingot (13) fixed-link, and it is provided with the fixture (151) for clamping the knotted rope (11)；The jack (2) it is provided with multiple, one end of which is fixed on the support foot (14), the other end is matched for clamping tightly with the knotted rope (11) one by one, with The knotted rope (11) of clamping can be pulled, to adjust the initial stress of the steel pipe arch bridge (1)；

The control device includes strain gauge (3), data acquisition module (4), early warning value setup module (5), analysis and processing module (6) and fuel pump module (7),

The strain gauge (3) is arranged on the controlling sections (10) of the steel pipe arch bridge (1), to be used for the steel pipe arch bridge (1) The measurement of initial stress；

The data acquisition module (4) includes that data-acquisition submodule (41) and data transmission module (42), the data are adopted Collection submodule (41) is used to set the frequency of the strain gauge (3) measurement, and can obtain the number of the strain gauge (3) measurement Value；The data transmission module (42) is used to obtain the data-acquisition submodule (41) measurement of the strain gauge (3) Numerical value is sent to the analysis and processing module (6)；

The early warning value setup module (5) sets for the steel pipe arch bridge (1) different controlling sections (10) early warning initial stress values Fixed, the analysis and processing module (6) is for setting the numerical value that the strain gauge (3) measure with the early warning value setup module (5) Fixed early warning initial stress value is compared, and is set when the numerical value of the strain gauge (3) measurement is greater than the early warning value setup module (5) When fixed early warning initial stress value, numerical value and the early warning value that the analysis and processing module (6) measures according to the strain gauge (3) The difference of the numerical value of setup module (5) generates drawing amount, and controls the jack (2) to described by the fuel pump module (7) Knotted rope (11) is pulled.

2. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 1 and control system, feature Be: the support foot (14) is equipped with the guide hole worn for the knotted rope (11), and the knotted rope (11) is arranged with protection pipe (16), Protection pipe (111) both ends are tightly connected with the support foot (14) and the anchorage (15) respectively, with one to the guide hole Side is sealed；The jack (2) is arranged with sealing ring (17), and the sealing ring (17) is located at the jack (2) and institute The junction of support foot (14) is stated, to be sealed to the guide hole backwards to the side of the protection pipe (111).

3. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 1 and control system, feature Be: the pylon (12) is equipped with knotted rope seat, and the knotted rope seat includes guide wheel (18), connecting shaft (180), fixed plate (181) And bottom plate (182), there are two the fixed plate (181) sets, and it is fixedly connected respectively with the two sides of the bottom plate (182), it is described Bottom plate (182) is fixed on the pylon (12) by bolt (185)；The connecting shaft (180) is equipped with several, several described Connecting shaft (180) both ends are fixedly connected with two fixed plates (181) respectively, and are arranged along arc type structure, each connection It is rotatably equipped on axis (180) guide wheel (18), the peripheral wall of the guide wheel (18) has the cunning for concaving towards the center of circle Slot (184), so that the knotted rope (11) can be fed through the pylon (12) by the sliding slot of the guide wheel (18).

4. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 3 and control system, feature Be: the surface of the sliding slot (184) is equipped with rubber (186).

5. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 3 and control system, feature Be: the knotted rope seat further includes support frame (183), support frame as described above (183) one end and the connecting shaft (180) fixed company It connects, the other end is fixedly connected with the bottom plate (182).

6. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 1 and control system, feature Be: the control device further includes intensive measurement module (8), and the intensive measurement module (8) includes sense signals module (81), history environment amount acquisition submodule (82) and environment parameter comparison submodule (83), the sense signals module (81) include Temperature sensor and air velocity transducer, and it is respectively used to the measurement of the steel pipe arch bridge (1) position temperature and wind speed, and energy Enough generate the average value of every degree/day and wind speed；The history environment amount acquisition submodule (82) is for obtaining the steel pipe arch bridge (1) position it is over the years in the average value of every degree/day and wind speed；Environment parameter comparison submodule (83) is used for will be described The numerical value of sense signals module (81) time corresponding with history environment amount acquisition submodule (82) is compared, when described When sense signals module (81) and the difference of the history environment amount acquisition submodule (82) are greater than the set value, the environment parameter pair The data-acquisition submodule (41) is controlled than submodule (83), data acquisition is carried out to the strain gauge (3), when the strain When counting the numerical value of (3) measurement greater than the early warning initial stress value that the early warning value setup module (5) sets, the analysis and processing module (6) drawing amount is generated according to the difference of the numerical value of the strain gauge (3) measurement and the numerical value of the early warning value setup module (5), and The jack (2) is controlled by the fuel pump module (7) to pull the knotted rope (11).

7. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 1 and control system, feature It is: further includes model display end (9), the model display end (9) includes model building module (91) and stress display module (92), the model building module (91) is used to model the steel pipe arch bridge (1) by Tekla software；The stress Display module (92) is used to obtain the numerical value of the strain gauge (3), and the stress display module (92) is in the model foundation mould Corresponding position shows stress condition in block (91), and can be to the controlling sections (10) beyond early warning initial stress value in the mould Type is established corresponding position in module (91) and is shown with strikingly color.

8. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 7 and control system, feature Be: the early warning value setup module (5) can will meet defined initial stress value to early warning initial stress value and distinguish multiple gradients, The stress display module (92) can obtain the numerical value of gradient in the early warning value setup module (5), and according to the height of gradient It is low, it is shown in stress display module (92) corresponding position by the color of gradual change.

9. existing according to a kind of CFST Arch Bridge initial stress automatic monitoring described in claim 1 and control system, feature In: the quantity of the knotted rope (11), the knotted rope (11) be mounted on the steel pipe arch bridge (1) and the pylon (12) position, The controlling sections (10) are determined in the position of the steel pipe arch bridge (1) by finite element analysis.

10. a kind of CFST Arch Bridge initial stress automatic monitoring according to claim 1 and control system, feature It is: the regulating step of steel pipe arch bridge (1) initial stress are as follows:

S1: drawing amount is divided into the adjustment amount of several pieces equivalent by the analysis and processing module (6)；

S2: the analysis and processing module (6) inputs adjustment amount to the fuel pump module (7), so that the jack (2) is to described Knotted rope (11) carries out the drawing of an adjustment amount；

S3: the data-acquisition submodule (41) is acquired the measured value of the strain gauge (3), when the data acquisition mould When the numerical value of block (41) is greater than the numerical value of the early warning value setup module (5), step S2 is repeated until the data acquisition mould The numerical value of block (41) is less than the numerical value of the early warning value setup module (5).

Technical field

The present invention relates to bridge construction technical field, especially a kind of CFST Arch Bridge initial stress automatic monitoring with Control system.

Background technique

CFST Arch Bridge mechanical property and workability are excellent, and economic sexual clorminance is significant, obtain in bridge construction field Extensive use is arrived.The deficiency of CFST Arch Bridge is that its span ability is relatively weak, wherein the initial stress problem of steel pipe It is to restrict one of the reason of CFST Arch Bridge develops to more large span.

Steel pipe initial stress is generated in construction stages of arch bridge, and the working procedure of CFST Arch Bridge is first to install empty steel Pipeline overhead lifting rib, intrusion pipe inner concrete forms steel pipe concrete arch rib after closure.Before pipe inner concrete forms intensity, empty tubular arch Rib will bear steel pipe self weight, concrete weight in wet base and construction loads etc., i.e., hold jointly with concrete as composite structure in steel pipe Before by load, initial stress is produced in empty steel pipe, here it is the initial stress problems of steel pipe in CFST Arch Bridge, just answer The deformation that the presence of power increases arch bridge reduces its integrated carrying ability.Studies have shown that the degree of initial stress of CFST Arch Bridge with Across footpath has direct relation, according to the across footpath and degree of initial stress functional relation provided, calculates when purlin formula span of arch diameter reaches 700m, Degree of initial stress is 0.65, is reached as defined in " highway concrete filled steel tube arch bridge design specification " JTG/T D65-06-2015 specification just Stress limit value limits arch bridge and develops to more large span.

But the monitoring of initial stress has only been carried out in current construction monitoring of concrete-filed steel tubular arch bridge work mostly, as long as initial stress Numerical value standardize allow in the range of with regard to no longer excessively being studied, this way is possible Mid and minor spans arch bridge, But security risk will likely be buried for super-span CFST Arch Bridge.Steel pipe is elastic-plastic material, once into plasticity State will generate expendable deformation, and in work progress, due to the combination stressed structure of not formed concrete filled steel tube, may go out Existing of short duration steel pipe reaches the situation of yield strength, at this point, if cannot get the true stress of steel pipe by real-time monitoring State, and by actively adjust carry out steel pipe initial stress control, even if later period steel penstock stress state revert to one it is lower Level, but this expendable deformation also can bring security risk to the long-time quality of arch bridge.

Summary of the invention

To solve the above-mentioned problems, the present invention provides a kind of CFST Arch Bridge initial stress automatic monitoring and control is System, can obtain steel pipe arch bridge initial stress state, and can adjust the initial stress of steel pipe arch bridge in real time in real time, guarantee tubular arch The safety of bridge.

To achieve the goals above, the technical solution adopted by the present invention are as follows:

A kind of CFST Arch Bridge initial stress automatic monitoring and control system, including steel pipe arch bridge, knotted rope, pylon, Jack and control device,

There are two the pylon is set, and the both ends of the steel pipe arch bridge are located at, the pylon is backwards to the tubular arch Bridge side is equipped with anchorage, and the anchorage is equipped with support foot backwards to the side of the pylon, and the knotted rope is equipped with more, and along the steel The arch of pipeline overhead lifting bridge is uniformly distributed, and described knotted rope one end is laid on the steel pipe arch bridge, and the other end is successively slided and is fed through The corresponding pylon, the anchorage and the support foot, the knotted rope are arranged with anchor between the support foot and the anchorage Tool, the anchorage and the anchor ingot fixed-link, and it is provided with the fixture for clamping the knotted rope；The jack is provided with Multiple, one end of which is fixed on the support foot, the other end is matched for clamping tightly with the knotted rope one by one, with can be to the button of clamping Suo Jinhang drawing, to adjust the initial stress of the steel pipe arch bridge；

The control device includes strain gauge, data acquisition module, early warning value setup module, analysis and processing module and oil pump Module,

The strain gauge is arranged on the controlling sections of the steel pipe arch bridge, with the survey for the steel pipe arch bridge initial stress Amount；

The data acquisition module includes data-acquisition submodule and data transmission module, the data-acquisition submodule For setting the frequency of the strain gauge measurement, and the numerical value of the strain gauge measurement can be obtained；The data transmission mould Block is used to send the analysis and processing module for the measurement numerical value that the data-acquisition submodule obtains the strain gauge；

The early warning value setup module is used for the setting of the steel pipe arch bridge difference controlling sections early warning initial stress value, described The early warning initial stress value of numerical value and early warning value setup module setting that analysis and processing module is used to measure the strain gauge It is compared, when the numerical value of strain gauge measurement is greater than the early warning initial stress value of early warning value setup module setting, institute It states analysis and processing module and drawing is generated according to the difference of the strain gauge numerical value measured and the numerical value of the early warning value setup module Amount, and knotted rope described in the jack pair is controlled by the fuel pump module and is pulled.

Further, the support foot is equipped with the guide hole worn for the knotted rope, and the knotted rope is arranged with protection pipe, described Protection pipe both ends are tightly connected with the support foot and the anchorage respectively, are sealed with the side to the guide hole；Described thousand Jin top cover is equipped with sealing ring, and the sealing ring is located at the junction of the jack and the support foot, with to the guide hole backwards The side of the protection pipe is sealed.

Further, the pylon is equipped with knotted rope seat, and the knotted rope seat includes guide wheel, connecting shaft, fixed plate and bottom plate, It there are two the fixed plate is set, and is fixedly connected respectively with the two sides of the bottom plate, the bottom plate is bolted on described On pylon；The connecting shaft is equipped with several, and several connecting shaft both ends are fixedly connected with two fixed plates respectively, and edge Arc type structure arranges, and is rotatably equipped with the guide wheel in each connecting shaft, the peripheral wall of the guide wheel has The sliding slot in the center of circle is concaved towards, so that the knotted rope can be fed through the pylon by the sliding slot of the guide wheel.

Further, the surface of the sliding slot is equipped with rubber.

Further, the knotted rope seat further includes support frame, and support frame as described above one end is fixedly connected with the connecting shaft, separately One end is fixedly connected with the bottom plate.

Further, the control device further includes intensive measurement module, and the intensive measurement module includes sense signals Module, history environment amount acquisition submodule and environment parameter compare submodule, the sense signals module include temperature sensor and Air velocity transducer, and it is respectively used to the measurement of steel pipe arch bridge position temperature and wind speed, and every degree/day can be generated And the average value of wind speed；The history environment amount acquisition submodule be used to obtain the steel pipe arch bridge position it is over the years in it is every The average value of degree/day and wind speed；The environment parameter comparison submodule is used for the sense signals module and the history environment The numerical value of amount acquisition submodule corresponding time is compared, when the sense signals module and the history environment amount obtain son When the difference of module is greater than the set value, the environment parameter comparison submodule controls the data-acquisition submodule to the strain gauge Data acquisition is carried out, when the numerical value of strain gauge measurement is greater than the early warning initial stress value of early warning value setup module setting When, the analysis and processing module is generated according to the difference of the strain gauge numerical value measured and the numerical value of the early warning value setup module Drawing amount, and knotted rope (11) is pulled by fuel pump module (7) control jack (2).

It further, further include model display end, the model display end includes that model building module and stress show mould Block, the model building module is for modeling the steel pipe arch bridge by Tekla software；The stress display module is used In the numerical value for obtaining the strain gauge, the stress display module corresponding position in the model building module shows stress Situation, and can to the controlling sections beyond early warning initial stress value in the model building module corresponding position with distinct face Color is shown.

Further, the early warning value setup module can will meet defined initial stress value to early warning initial stress value and distinguish Multiple gradients, the stress display module can obtain the numerical value of gradient in the early warning value setup module, and according to gradient Just, it is shown in the stress display module corresponding position by the color of gradual change.

Further, the quantity of the knotted rope, the knotted rope are mounted on the position of the steel pipe arch bridge and the pylon, institute Controlling sections are stated to determine in the position of the steel pipe arch bridge by finite element analysis.

Further, the regulating step of the steel pipe arch bridge initial stress are as follows:

S1: drawing amount is divided into the adjustment amount of several pieces equivalent by the analysis and processing module；

S2: the analysis and processing module inputs adjustment amount to the fuel pump module, so that knotted rope described in the jack pair Carry out the drawing of an adjustment amount；

S3: the data-acquisition submodule is acquired the measured value of the strain gauge, when the data-acquisition submodule Numerical value be greater than the early warning value setup module numerical value when, repeat step S2 until the data-acquisition submodule numerical value it is small In the numerical value of the early warning value setup module.

The beneficial effects of the present invention are:

1. can be measured according to the frequency control strain gauge of setting under the action of data-acquisition submodule.With right The initial stress for controlling the controlling sections of steel pipe arch bridge measures, when the measured value of strain gauge is greater than the early warning of early warning value setup module When stress value, analysis and processing module is generated according to the difference of the measured value of strain gauge and the early warning stress value of early warning value setup module and is pulled Amount, and control oil pump module, so that fuel pump module can control jack, jack enables knotted rope to steel pipe by flexible Arch bridge is pulled, and be ensure that steel pipe arch bridge is in during construction and is met defined initial stress.Solves people's measurement just The hysteresis quality of stress, and it is capable of the time of day of Overall Acquisition initial stress, certain pilot process may be ignored, to avoid tying Structure safety belt carrys out hidden danger.

2. knotted rope and guide wheel are rolling friction mode, knotted rope can be reduced and be lost in drawing, knotted rope is increased Service life, improve work progress in safety；Since several connecting shafts are arranged along arc type structure, so that in connecting shaft Guide wheel also has to be arranged along arc type structure, therefore when knotted rope is fed through pylon by the sliding slot of guide wheel, can increase knotted rope With the contact area of guide wheel, the pressure of knotted rope is equably shared on pylon, prevents pylon from the seat of fatigue occur； Under the action of support frame, the supportive of connecting shaft can be improved, increase the safety of work progress.

3. identical steel pipe arch bridge is in different temperature since initial stress is to will receive the temperature and windage of environment And can have different initial stress in wind-force, submodule is compared for sense signals module and history ring by environment parameter in the present invention The numerical value of border amount acquisition submodule corresponding time is compared, when sense signals module and history environment amount acquisition submodule When difference is greater than the set value, environment parameter compares submodule control data-acquisition submodule and carries out data acquisition to strain gauge, to obtain Influence of the abnormal environment to steel pipe arch bridge initial stress is obtained, prevents data-acquisition submodule can not be timely in the measurement frequency of setting It was found that the situation of change of the steel pipe arch bridge initial stress because of environment reason appearance, guarantees the safety of work progress.

4. since structural system constantly changes in entire work progress and temperature boundary condition etc. influences, accurately Knotted rope power adjusted value can not be calculated, drawing amount can be divided into the adjustment of several pieces equivalent by analysis and processing module Amount, and adjustment amount is inputted after jack pair knotted rope carries out the drawing of an adjustment amount to fuel pump module and measures steel pipe arch bridge again Initial stress, until data-acquisition submodule numerical value be less than early warning value setup module numerical value, as at the beginning of each steel pipe arch bridge The adjusting of stress is all the drawing of a small amount of control knotted ropes, makes up the deficiency of calculating, at the same it is highly-safe, stability is strong, control knot Fruit is good.

Detailed description of the invention

Fig. 1 is the CFST Arch Bridge initial stress automatic monitoring and control system of a better embodiment of the invention Structural schematic diagram.

Fig. 2 is the CFST Arch Bridge initial stress automatic monitoring and control system of a better embodiment of the invention Anchorage structures schematic diagram.

Fig. 3 is the CFST Arch Bridge initial stress automatic monitoring and control system of a better embodiment of the invention Jack structure schematic diagram.

Fig. 4 is the CFST Arch Bridge initial stress automatic monitoring and control system of a better embodiment of the invention Knotted rope holder structure schematic diagram.

Fig. 5 is the CFST Arch Bridge initial stress automatic monitoring and control system of a better embodiment of the invention Traction wheel structural schematic diagram.

Fig. 6 is the CFST Arch Bridge initial stress automatic monitoring and control system of a better embodiment of the invention Control block diagram.

In figure, 1- steel pipe arch bridge, 10- controlling sections, 11- knotted rope, 12- pylon, 13- anchorage, 14- support foot, 15- anchorage, 151- fixture, 16- protection pipe, 17- sealing ring, 18- guide wheel, 180- connecting shaft, 181- fixed plate, 182- bottom plate, 183- branch Support, 184- sliding slot, 185- bolt, 186- rubber, 2- jack, 3- strain gauge, 4- data acquisition module, the acquisition of 41- data Submodule, 42- data transmission module, 5- early warning value setup module, 6- analysis and processing module, 7- fuel pump module, 8- encryption are surveyed Measure module, 81- sense signals module, 82- history environment amount acquisition submodule, 83- environment parameter comparison submodule, 9- model display End, 91- model building module, 92- stress display module.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical ", " horizontal ", "left", "right" and similar statement for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases Any and all combinations of the listed item of pass.

The CFST Arch Bridge initial stress of please referring also to Fig. 1 to Fig. 6, a better embodiment of the invention automate prison Surveying with control system includes steel pipe arch bridge 1, knotted rope 11, pylon 12, jack 2 and control device.

There are two pylon 12 is set, and the both ends of steel pipe arch bridge 1 are located at, pylon 12 is equipped with backwards to 1 side of steel pipe arch bridge Anchorage 13, anchorage 13 are equipped with support foot 14 backwards to the side of pylon 12, and knotted rope 11 is equipped with more, and along the arch of steel pipe arch bridge 1 It is uniformly distributed, 11 one end of knotted rope is laid on steel pipe arch bridge 1, and the other end, which successively slides, is fed through corresponding pylon 12, anchorage 13 And support foot 14.

Knotted rope 11 is arranged with anchorage 15 between support foot 14 and anchorage 13, and anchorage 15 is connect by fixture with knotted rope 11, And one end is connect with anchorage 13.Jack 2 is gripped for part knotted rope 11, and one end is abutted with support foot 14, can be right Knotted rope 11 is pulled, to adjust the initial stress of steel pipe arch bridge 1.

Anchorage 15 and anchor ingot fixed-link, and it is provided with the fixture 151 for clamping knotted rope 11.Jack 2 is provided with more A, one end of which is fixed on support foot 14, the other end is matched for clamping tightly with knotted rope 11 one by one, can lead to the knotted rope 11 of clamping It draws, to adjust the initial stress of steel pipe arch bridge 1.

In the present embodiment, the knotted rope 11 of part is provided with jack 2, and quantity needed for jack 2 is that basis estimates steel pipe The drawing amount of arch bridge 1 determines, by using appropriate number of jack 2, guarantees the tune that initial stress is carried out to steel pipe arch bridge 1 Expense that is whole, while reducing the time of the installation of jack 2 and spent using jack.It, being capable of make-up under the action of jack 2 Rope 11 is pulled, to realize the adjusting of 1 initial stress of steel pipe arch bridge, demonstrate,proving entire work progress steel pipe initial stress does not transfinite.

In the present embodiment, jack 2 uses centre-hole jack, and one end can clamp knotted rope 11, with right Knotted rope is pulled.

In the present embodiment, fixture 151 is to be set on knotted rope 11 in advance, and be fixedly connected with anchorage 15, in the mistake of construction Cheng Zhong, fixture 151 is in the open state, so that jack 2 can pull knotted rope 11, passes through closure after construction Fixture 151 enables knotted rope 11 to be fixed on anchorage 15 by fixture 151.

Support foot 14 is equipped with the guide hole worn for knotted rope 11, and knotted rope 11 is arranged with protection pipe 16,111 both ends of protection pipe difference It is tightly connected with support foot 14 and anchorage 15, is sealed with the side to guide hole.Jack 2 is arranged with sealing ring 17, sealing ring 17 are located at the junction of jack 2 and support foot 14, to be sealed to guide hole backwards to the side of protection pipe 111.Pass through protection pipe 16 and sealing ring 17 cooperate jointly, prevent sandstone or water from entering in jack 2, to improve the service life of jack 2 and flexible Accuracy.

In the present embodiment, pylon 12 be equipped with knotted rope seat, knotted rope seat include guide wheel 18, connecting shaft 180, fixed plate 181 and Bottom plate 182.

It there are two fixed plate 181 is set, and is fixedly connected respectively with the two sides of bottom plate 182, bottom plate 182 is solid by bolt 185 It is scheduled on pylon 12；Connecting shaft 180 is equipped with several, and several 180 both ends of connecting shaft are fixedly connected with two fixed plates 181 respectively, And arranged along arc type structure, guide wheel 18 is rotatably installed, the peripheral wall of guide wheel 18 has recessed in each connecting shaft 180 To the sliding slot 184 in the center of circle, so that knotted rope 11 can be fed through pylon 12 by the sliding slot of guide wheel 18.

Knotted rope 11 and guide wheel 18 are rolling friction mode, can reduce knotted rope 11 and are lost in drawing, be increased The service life of knotted rope 11 improves the safety in work progress.Since several connecting shafts 180 are arranged along arc type structure, so that Guide wheel 18 in connecting shaft 180 also has to be arranged along arc type structure, therefore knotted rope 11 is worn by the sliding slot 184 of guide wheel 18 When crossing pylon 12, the contact area of knotted rope 11 Yu guide wheel 18 can be increased, the pressure of knotted rope 11 is equably shared Onto pylon 11, prevent pylon from the seat of fatigue occur.

The surface of sliding slot 184 is equipped with rubber 186.It can be avoided knotted rope 11 in the effect of rubber 186 and guide wheel 18 be direct Friction, to effectively improve the service life of knotted rope 11.

Knotted rope seat further includes support frame 183, and 183 one end of support frame is fixedly connected with connecting shaft 180, the other end and bottom plate 182 are fixedly connected.Under the action of support frame 183, the supportive of connecting shaft 180 can be improved, increase the safety of work progress Property.

Control device includes strain gauge 3, data acquisition module 4, early warning value setup module 5, analysis and processing module 6 and oil pump Module 7.

Strain gauge 3 is arranged on the controlling sections 10 of steel pipe arch bridge 1, with the measurement for 1 initial stress of steel pipe arch bridge.This reality It applies in example, strain gauge 3 uses vibrating string extensometer, is capable of the numerical value of real-time measurement steel pipe arch bridge initial stress, it is desirable that has height Precision, high sensitivity, excellent waterproof performance and long-time stability, can use under rugged environment, and precision is wanted to reach The 1% of gamut.

In the present embodiment, the quantity of knotted rope 11, knotted rope 11 are mounted on the position of steel pipe arch bridge 1 and pylon 12, controlling sections 10 are determined in the position of steel pipe arch bridge 1 by finite element analysis.Controlling sections 10 refer to component most Dangerous Place, and what internal force occurred cuts Face.The controlling sections 10 of the present embodiment are as shown in Figure 1.

Data acquisition module 4 includes data-acquisition submodule 41 and data transmission module 42, data-acquisition submodule 41 For setting the frequency of the measurement of strain gauge 3, and the numerical value of the measurement of strain gauge 3 can be obtained；Data transmission module 42 is used for will The measurement numerical value that data-acquisition submodule 41 obtains strain gauge 3 is sent to analysis and processing module 6.

Setting of the early warning value setup module 5 for the 10 early warning initial stress value of different controlling sections of steel pipe arch bridge 1.Due to steel pipe Different parts can use different steel pipe materials on arch bridge, and steel strength is different, and yield strength is also not identical, the application The middle difference according to steel strength in different controlling sections 10, setting meet defined yield strength early warning value.

Analysis and processing module 6 is used for the numerical value that strain gauge 3 measures and the early warning initial stress that early warning value setup module 5 is set Value is compared, when the numerical value that strain gauge 3 measures is greater than the early warning initial stress value that early warning value setup module 5 is set, at analysis It manages module 6 and drawing amount is generated according to the difference of the numerical value measured of strain gauge 3 and the numerical value of early warning value setup module 5, and pass through oil pump Module 7 controls jack 2 and pulls to knotted rope 11.And jack 2 is controlled by control oil pump module 7, knotted rope 11 is led It draws.

Under the action of data-acquisition submodule 41, it can be measured according to the frequency control strain gauge 3 of setting.With right The initial stress for controlling the controlling sections 10 of steel pipe arch bridge 1 measures, and mould is arranged when the numerical value that strain gauge 3 measures is greater than early warning value When the early warning initial stress value that block 5 is set, numerical value that analysis and processing module 6 measure according to strain gauge 3 and early warning value setup module 5 The difference of numerical value generates drawing amount, and control oil pump module 7, so that fuel pump module 7 can control jack 2, jack 2 is by stretching Contracting enables knotted rope 11 to pull steel pipe arch bridge 1, ensure that steel pipe arch bridge 1 is in during construction and meets regulation Initial stress.It solves the hysteresis quality that people measures initial stress, and is capable of the time of day of Overall Acquisition initial stress, may ignore Certain pilot process, so that structure safety belt be avoided to carry out hidden danger.

Control device further includes intensive measurement module 8, and intensive measurement module 8 includes sense signals module 81, history environment It measures acquisition submodule 82 and environment parameter compares submodule 83, sense signals module 81 includes temperature sensor and air velocity transducer, And it is respectively used to the measurement of 1 position temperature of steel pipe arch bridge and wind speed, and the average value of every degree/day and wind speed can be generated； History environment amount acquisition submodule 82 be used to obtaining 1 position of steel pipe arch bridge it is over the years in every degree/day and wind speed be averaged Value；Environment parameter compares submodule 83 and is used for the time corresponding with history environment amount acquisition submodule 82 of sense signals module 81 Numerical value is compared, when the difference of sense signals module 81 and history environment amount acquisition submodule 82 is greater than the set value, environment Amount comparison submodule 83 controls data-acquisition submodule 41 and carries out data acquisition to strain gauge 3, is adjusted with determining the need for The initial stress of steel pipe arch bridge 1.When the numerical value that strain gauge 3 measures is greater than the early warning initial stress value that early warning value setup module 5 is set, Analysis and processing module 6 generates drawing amount according to the difference of the numerical value measured of strain gauge 3 and the numerical value of early warning value setup module 5, and leads to The control jack 2 of control oil pump module 7 is crossed to pull knotted rope 11.

Since initial stress is to will receive the temperature and windage of environment, identical steel pipe arch bridge in different temperature and Can have different initial stress in wind-force, in the present embodiment by environment parameter compare submodule 83 by sense signals module 81 with go through The numerical value of the corresponding time of history environment parameter acquisition submodule 82 is compared, when sense signals module 81 and history environment amount obtain When the difference of submodule 83 is greater than the set value, environment parameter compare submodule 83 control data-acquisition submodule 41 to strain gauge 3 into The acquisition of row data, to obtain influence of the abnormal environment to steel pipe arch bridge initial stress, prevents data-acquisition submodule 41 in setting The situation of change that can not find 1 initial stress of steel pipe arch bridge occurred by environment reason in the measurement frequency in time, guarantees work progress Safety.

It further include model display end 9 in the present embodiment, model display end 9 includes that model building module 91 and stress are shown Module 92.Model building module 91 is used to model steel pipe arch bridge 1 by Tekla software；Stress display module 92 is used for The numerical value of strain gauge 2 is obtained, the corresponding position in model building module 91 of stress display module 92 shows stress condition, and energy It is enough that the controlling sections 10 beyond early warning initial stress value, corresponding position is shown in model building module 91 with strikingly color.This In application, using the red controlling sections 10 for indicating to exceed early warning initial stress.

Since steel pipe segment is in place, loose hoist cable, drawing knotted rope, closure are released, and rope, chord member filling concrete, panel grider are hung Dress, sunpender drawing etc. are all the main influence operating conditions of steel pipe initial stress, and structural system constantly changes in work progress, initial stress Numerical value is also constantly changing, and in stress display module 92, can intuitively understand 10 stress of controlling sections of steel pipe arch bridge 1 Situation, convenient for the analysis that staff changes 10 initial stress of controlling sections, to grasp the variation of 10 initial stress of controlling sections Rule, in order to the improvement of postorder construction.

In the present embodiment, early warning value setup module 5 can will meet defined initial stress value to early warning initial stress value and distinguish Multiple gradients, stress display module 92 can obtain the numerical value of gradient in early warning value setup module 5, and according to the height of gradient, It is shown in 92 corresponding position of stress display module by the color of gradual change.Since the initial stress of steel pipe arch bridge is to gradually change , multiple gradients are distinguished by the way that defined initial stress value to early warning initial stress value will be met, so that staff understands control in advance The case where section 10 processed changes, so as to be paid close attention in advance the controlling sections 10 that will exceed early warning stress value, effectively Ground guarantees that entire work progress steel pipe initial stress does not transfinite.

The regulating step of 1 initial stress of steel pipe arch bridge are as follows:

S1: drawing amount is divided into the adjustment amount of several pieces equivalent by analysis and processing module 6；

S2: analysis and processing module 6 inputs adjustment amount to fuel pump module 7, so that jack 2 once adjusts knotted rope 11 The drawing of amount；

S3: data-acquisition submodule 41 is acquired the measured value of strain gauge 3, when the numerical value of data-acquisition submodule 41 is big When the numerical value of early warning value setup module 5, step S2 is repeated until the numerical value of data-acquisition submodule 41 is arranged less than early warning value The numerical value of module 5.

Since structural system constantly changes in entire work progress and temperature boundary condition etc. influences, essence True knotted rope power adjusted value can not be calculated.Drawing amount can be divided into the tune of several pieces equivalent by analysis and processing module 6 Whole amount, and adjustment amount is inputted after jack 2 carries out the drawing of an adjustment amount to knotted rope 11 to fuel pump module 7 and measures steel again The initial stress of pipeline overhead lifting bridge 1, until the numerical value of data-acquisition submodule 41 is less than the numerical value of early warning value setup module 5, due to this Shen Please in steel pipe arch bridge 1 initial stress every time adjustings all be a small amount of control knotted ropes drawing, compensate for the deficiency of calculating, while safely Property it is high, stability is strong, control result is good.

The CFST Arch Bridge initial stress automatic monitoring of the present embodiment and the monitoring and control process of control system are as follows:

1, when reaching the measurement frequency of setting, measuring signal is transferred in strain gauge 3 by data-acquisition submodule 41, is respectively answered The initial stress for becoming 3 pairs of controlling sections 10 of meter measures, and the numerical value of acquired strain gauge 3 is passed through number by data-acquisition submodule 41 It is transferred in analysis and processing module 6 according to transmission submodule 42；

2, data-acquisition submodule 41 is compared by analysis and processing module 6 with the corresponding numerical value of early warning value setup module 5, Analysis and processing module 6 is for comparing the early warning initial stress value that the numerical value that strain gauge 3 measures is set with early warning value setup module 5 Compared with, when the numerical value that strain gauge 3 measures is greater than the early warning initial stress value that early warning value setup module 5 is set, analysis and processing module 6 The difference of the numerical value of the numerical value and early warning value setup module 5 that measure according to strain gauge 3 generates drawing amount, while analysis and processing module 6 will Drawing amount is divided into the adjustment amount of several pieces equivalent；

3, analysis and processing module 6 inputs adjustment amount to fuel pump module 7, so that jack 2 once adjusts knotted rope 11 The drawing of amount；

4, data-acquisition submodule 41 is acquired the measured value of strain gauge 3, when the measured value of strain gauge 3 is set greater than early warning value When setting the early warning initial stress value of module 5, step S2 is repeated until the measured value of strain gauge 3 is less than the early warning of early warning value setup module 5 Initial stress value.

5, when the difference of sense signals module 81 and history environment amount acquisition submodule 82 is greater than the set value, step is repeated 2-4。