阅读说明：本技术 一种桥面可开启摆式倾斜系杆拱桥 (Bridge floor can open pendulum-type slope tied arch bridge ) 是由 宋杰 于 2019-12-12 设计创作，主要内容包括：本发明公开了一种桥面可开启摆式倾斜系杆拱桥,包括曲线钢主梁、倾斜钢管拱拱肋、系杆拱吊杆、系杆拱转动铰、系杆拱转动轴、系杆拱桥墩、智能水泵装置和水泵装置水管。本发明满足了通航净空界限要求的特有实现方案,倾斜钢管拱拱肋与曲线钢主梁之间采用多根系杆拱吊杆连接,倾斜钢管拱拱肋与曲线钢主梁两端连接并下设系杆拱转动铰和系杆拱转动轴；内设于系杆拱桥墩的智能水泵装置将河水逐步抽入倾斜钢管拱拱肋,随着注入水水位的上升,倾斜的钢管拱肋重心上移至临界值后,系杆拱桥整体实现自动转动,从而实现桥面的开启。(The invention discloses a bridge deck openable swing type inclined tied arch bridge which comprises a curved steel main beam, inclined steel pipe arch ribs, tied arch suspenders, tied arch rotating hinges, tied arch rotating shafts, tied arch piers, an intelligent water pump device and water pump device water pipes. The invention meets the special realization scheme of the requirement of navigation clearance limit, the inclined steel tube arch ribs are connected with the curved steel main beam by adopting a plurality of tied arch suspenders, the inclined steel tube arch ribs are connected with two ends of the curved steel main beam, and tied arch rotating hinges and tied arch rotating shafts are arranged below the inclined steel tube arch ribs and the curved steel main beam; the intelligent water pump device arranged in the tied arch bridge pier gradually pumps river water into the inclined steel pipe arch ribs, and the gravity center of the inclined steel pipe arch ribs moves upwards to a critical value along with the rising of the water level of the injected water, so that the tied arch bridge integrally realizes automatic rotation, and the opening of the bridge deck is realized.)

1. The utility model provides a bridge floor can open pendulum-type slope tied arch bridge, includes that curved steel girder, slope steel pipe encircle the arch rib, tied arch jib, tied arch rotate hinge, tied arch axis of rotation, tied arch pier, intelligent pumping plant and pumping plant water pipe, its characterized in that: the inclined steel pipe arch ribs are fixedly connected with the curved steel main beam through the tied arch suspenders, the tied arch suspenders are uniformly arranged between the inclined steel pipe arch ribs and the curved steel main beam, two ends of the inclined steel pipe arch ribs and two ends of the curved steel main beam are connected with the tied arch rotating shafts in a matched mode through the tied arch rotating hinges, the intelligent water pump device is arranged inside the tied arch bridge pier, water pump device water pipes are mounted at the output end and the input end of the intelligent water pump device, and one end, far away from the intelligent water pump device, of each water pump device water pipe is inserted into the inclined steel pipe arch ribs.

2. The bridge deck openable pendulum type inclined tied arch bridge of claim 1, wherein an included angle between the inclined steel tube arch rib and the curved steel main beam is α, and the included angle α is 100-130 °.

3. The tied arch bridge with the bridge deck capable of being opened and swinging according to claim 1, wherein the rotation angle of the curved steel main beam is β, and the rotation angle β is 15-30 degrees.

4. A bridge deck openable pendulum type sloping tied arch bridge according to claim 1, wherein: the arch axis of the inclined steel pipe arch rib is of a secondary parabolic structure, the cross section of the inclined steel pipe arch rib is of a rectangular hollow structure, an air outlet is formed in the top of the inclined steel pipe arch rib, and an opening at the arch foot of the inclined steel pipe arch rib is connected with the water pump device water pipe.

5. A bridge deck openable pendulum type sloping tied arch bridge according to claim 1, wherein: the tied arch suspender adopts a galvanized steel wire inhaul cable, and the standard strength of the steel wire of the tied arch suspender is more than 1670 MPa.

6. A bridge deck openable pendulum type sloping tied arch bridge according to claim 1, wherein: the lower surface of the arch rib of the inclined steel pipe arch is uniformly embedded with an anchoring end suspender anchoring device, the upper surface of the curved steel girder is uniformly embedded with a tensioning end lower anchoring device, the top of the tied arch suspender is fixedly connected with the arch rib of the inclined steel pipe arch through the anchoring end suspender anchoring device, and the bottom of the tied arch suspender is fixedly connected with the curved steel girder through the tensioning end lower anchoring device.

7. A bridge deck openable pendulum type sloping tied arch bridge according to claim 1, wherein: the tied arch rotating hinge and the tied arch rotating shaft are arranged at the top of the tied arch bridge pier, and the tied arch rotating hinge has self-locking capacity.

8. A bridge deck openable pendulum type sloping tied arch bridge according to claim 1, wherein: the intelligent water pump device and the water pump device water pipe are pre-buried inside the tied arch bridge pier, and the intelligent water pump device is used for pumping river water and pressing the river water into the inclined steel pipe arch rib through the water pump device water pipe.

9. A bridge deck openable pendulum type sloping tied arch bridge according to claim 1, wherein: and a steel girder deck railing is symmetrically and fixedly arranged on one side of the upper surface of the curved steel girder, which is far away from the inclined steel pipe arch rib, through bolts.

Technical Field

The invention relates to the technical field of bridge engineering in traffic infrastructure industry, in particular to a bowstring arch bridge with an openable bridge deck and an inclined pendulum type.

Background

Along with the continuous and rapid development of Chinese economy, the urbanization and industrialization process is continuously accelerated, the traffic infrastructure industry develops rapidly, and a large number of municipal roads, highways, railways and rivers form spatial intersection. In view of the fact that river navigation conditions need to be reserved for the development of decades in the future, navigation clearance requirements are high often, dense urban environments are combined, existing complex field conditions are combined, and if the elevation of a full-line overhead or roadbed is improved to meet the requirements of river navigation clearances at specific positions, the construction cost is increased by tens of millions or even hundreds of millions often, engineering materials are wasted, and unnecessary removal is caused.

In order to avoid the increase of engineering cost, material waste and unnecessary removal caused by the lifting of a full-line overhead or a roadbed, only a few cities at home and abroad currently adopt openable bridges to realize navigation, such as a London bridge in England. However, most open bridges stop operating due to poor maintenance, damage of the rotating spherical hinge and the beam end structure. In view of this, a new solution meeting the requirement of navigation limit with clear structural stress, advanced technology, low maintenance cost and good landscape is urgently needed to be proposed.

Disclosure of Invention

The invention aims to provide a tied arch bridge with an openable and swinging bridge deck, which solves the problems in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a bridge deck openable swing type inclined tied arch bridge comprises a curved steel main beam, inclined steel pipe arch ribs, tied arch suspenders, tied arch rotating hinges, tied arch rotating shafts, tied arch bridge piers, an intelligent water pump device and a water pump device water pipe, the inclined steel pipe arch ribs and the curved steel main beam are fixedly connected through the tie bar arch suspender, the tied arch suspenders are uniformly arranged between the inclined steel pipe arch ribs and the curved steel main beam, the two ends of the inclined steel pipe arch ribs are connected with the two ends of the curved steel main beam in a matching way through the tie bar arch rotating hinge and the tie bar arch rotating shaft, the intelligent water pump device is arranged inside the bowstring arch bridge pier, the output end and the input end of the intelligent water pump device are both provided with a water pump device water pipe in a threaded manner, one end of the water pipe of the water pump device, which is far away from the intelligent water pump device, is inserted into the inclined steel pipe arch rib.

The included angle between the inclined steel pipe arch rib and the curve steel main beam is α, and the value of the included angle α is 100-130 degrees.

The turning angle of the curve steel main beam is β, and the value of the turning angle β is 15-30 degrees.

The arch axis of the inclined steel pipe arch rib is of a secondary parabolic structure, the cross section of the inclined steel pipe arch rib is of a rectangular hollow structure, an air outlet is formed in the top of the inclined steel pipe arch rib, and an opening at the arch foot of the inclined steel pipe arch rib is connected with a water pipe of the water pump device.

The tied arch suspender adopts a galvanized steel wire inhaul cable, and the standard strength of the steel wire of the tied arch suspender is greater than 1670 MPa.

The top of the tied arch suspender is fixedly connected with the inclined steel pipe arch rib through the anchoring end suspender upper anchoring device, and the bottom of the tied arch suspender is fixedly connected with the curved steel girder through the tensioning end lower anchoring device.

The tied arch rotating hinge and the tied arch rotating shaft are arranged at the top of the tied arch bridge pier, and the tied arch rotating hinge has self-locking capacity.

The intelligent water pump device and the water pump device water pipe are pre-buried inside the tied arch bridge pier, and the intelligent water pump device is used for pumping river water and pressing the river water into the inclined steel pipe arch rib through the water pump device water pipe.

And one side of the upper surface of the curved steel girder, which is far away from the inclined steel pipe arch rib, is symmetrically and fixedly provided with steel girder deck railings through bolts.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention meets the special realization scheme of the requirement of navigation clearance limit, the inclined steel tube arch ribs are connected with the curved steel main beam by adopting a plurality of tied arch suspenders, the inclined steel tube arch ribs are connected with two ends of the curved steel main beam, and tied arch rotating hinges and tied arch rotating shafts are arranged below the inclined steel tube arch ribs and the curved steel main beam; the intelligent water pump device arranged in the tied arch bridge pier gradually pumps river water into the inclined steel pipe arch ribs, the gravity center of the inclined steel pipe arch ribs moves upwards to a critical value along with the rising of the water level of injected water, the tied arch bridge integrally realizes automatic rotation, so that the opening of the bridge floor is realized, the traffic of two sides of the bridge is suspended before ships pass through the bridge, the bridge floor is opened, the requirement of navigation clearance limit is met, the ship passes through the bridge floor smoothly, and the bridge floor is closed to recover the traffic of the two sides.

2. The invention avoids lifting the elevation of the traffic connection line of the two banks, reduces the removal, lowers the manufacturing cost and benefits the society, generally speaking, the main bridge and the traffic connection bridge of the two banks are constructed synchronously, and the lifting of the elevation of the traffic connection line of the two banks is avoided from the overall project consideration, so that the engineering quantity of the connection overhead frame or the roadbed can be reduced, and the construction cost of tens of millions or even hundreds of millions can be saved, the removal is reduced, the social benefit is good, and the social stability is also facilitated.

3. The structure is efficient in stress, environment-friendly, and high in structural stress, the inclined steel pipe arch ribs and the curved steel main beam are connected by the multiple tie rod arch suspenders, so that the whole rigidity of the bridge in the longitudinal direction and the transverse direction is improved; utilize pumping plant to make slope steel pipe arch rib in pour into and discharge water into, change tie rod arch bridge focus position, realize opening and closing of bridge floor, effectively utilize the water resource, green.

Drawings

FIG. 1 is a front view of a bowstring arch bridge with an openable and swinging bridge deck according to an embodiment of the present invention;

FIG. 2 is a top view of a bowstring arch bridge with an openable and swinging bridge deck according to an embodiment of the invention;

FIG. 3 is a schematic view of the bridge deck opening state of the bridge deck of the inclined tied arch bridge with the openable swing type according to the embodiment of the invention;

FIG. 4 is a schematic cross-sectional view of the bridge deck in a closed state, in a mid-span cross section, of the openable pendulum type inclined tied arch bridge according to the embodiment of the invention;

FIG. 5 is a cross-sectional structural diagram of the bridge deck in an opened state of the openable pendulum tied arch bridge according to the embodiment of the present invention.

In FIGS. 1-5: 1-curved steel main beam; 2-inclining the steel pipe arch ribs; 3-a tied arch boom; 4-an anchoring device on the anchoring end suspender; 5-tensioning end anchor lowering device; 6-tie rod arch rotating hinge; 7-tie rod arch rotation axis; 8-tied arch bridge piers; 9-intelligent water pump device; 10-water pump device water pipe; 11-steel girder bridge deck rail.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a bridge deck openable swing type inclined tied arch bridge comprises a curved steel girder 1, inclined steel pipe arch ribs 2, tied arch suspenders 3, tied arch rotating hinges 6, tied arch rotating shafts 7, tied arch bridge piers 8, an intelligent water pump device 9 and a water pump device water pipe 10, wherein the inclined steel pipe arch ribs 2 are fixedly connected with the curved steel girder 1 through the tied arch suspenders 3, the tied arch suspenders 3 are uniformly arranged between the inclined steel pipe arch ribs 2 and the curved steel girder 1, two ends of the inclined steel pipe arch ribs 2 are connected with two ends of the curved steel girder 1 in a matched mode through the tied arch rotating hinges 6 and the tied arch rotating shafts 7, the intelligent water pump device 9 is arranged inside the tied arch bridge piers 8, the water pump device water pipe 10 is installed at the output end and the input end of the intelligent water pump device 9 in a threaded mode, one end, far away from the intelligent water pump device 9, of the water pump device water pipe 10 is inserted into the inclined steel pipe arch bridges Inside the rib 2.

The intelligent water pump device 9 pumps river water into the inclined steel pipe arch ribs 2 step by step through the water pump device water pipes 10, and the tied arch bridge integrally realizes automatic rotation after the gravity center of the inclined steel pipe arch ribs 2 moves upwards to a critical value along with the rising of the water level of injected water, so that the opening of the bridge deck is realized.

The span of the inclined tied arch rib 2 is 64m, the rise height is 20.0m, the rise-span ratio is 1:3.2, the length of the curved steel main beam 1 is 73.3m, the width is 5.0m, the flange height is 0.5m, and the root height is 1.0 m.

The included angle between the inclined steel pipe arch rib and the curve steel main beam is α, and the value of the included angle α is 100-130 degrees.

The turning angle of the curve steel main beam is β, and the value of the turning angle β is 15-30 degrees.

The arch axis of the inclined steel pipe arch rib 2 is of a secondary parabolic structure or a 1.8-time parabolic structure, the cross section of the inclined steel pipe arch rib 2 is of a rectangular hollow structure, the top of the inclined steel pipe arch rib 2 is provided with an air outlet, an arch foot opening of the inclined steel pipe arch rib 2 is connected with the water pump device water pipe 10, an air outlet is formed in the top of the inclined steel pipe arch rib 2, the water level in the inclined steel pipe arch rib 2 can rise and fall conveniently, the arch foot opening of the inclined steel pipe arch rib 2 is formed, the water pump device water pipe 10 is plugged into the opening, and the intelligent water pump device 9 can conveniently take river water into and out of the inclined steel pipe arch rib 2 through the water pump device water pipe 10.

The tied arch suspender 3 adopts a galvanized steel wire inhaul cable, and the standard strength of the steel wire of the tied arch suspender 3 is more than 1670 MPa.

The lower surface of the inclined steel pipe arch rib 2 is uniformly embedded with an anchoring end suspender upper anchoring device 4, the upper surface of the curved steel main beam 1 is uniformly embedded with a tensioning end lower anchoring device 5, the top of the tied arch suspender 3 is fixedly connected with the inclined steel pipe arch rib 2 through the anchoring end suspender upper anchoring device 4, and the bottom of the tied arch suspender 3 is fixedly connected with the curved steel main beam 1 through the tensioning end lower anchoring device 5.

The tied arch rotating hinge 6 and the tied arch rotating shaft 7 are installed at the top of the tied arch bridge pier 8, the tied arch rotating hinge 6 has self-locking capacity, and when the tied arch integrally rotates to reach the rotating angle β of the curved steel main beam, the tied arch rotating hinge 6 can automatically self-lock to limit the rotation of the bridge, so that the tied arch is prevented from rotating excessively.

The intelligent water pump device 9 and the water pipe 10 of the water pump device are pre-embedded inside the tied arch bridge pier 8, the intelligent water pump device 9 is used for pumping river water and pressing the river water into the inclined steel pipe arch ribs 2 through the water pipe 10 of the water pump device, and the tied arch bridge integrally realizes automatic rotation after the gravity center of the inclined steel pipe arch ribs 2 moves upwards to a critical value along with the rising of the water level injected into the inclined steel pipe arch ribs 2, so that the opening of a bridge floor is realized; when the bridge deck is required to be closed, water is drained through the intelligent water pump device 9 and the water pump device water pipe 10, river water inside the inclined steel pipe arch ribs 2 is pumped out, then the water level inside the inclined steel pipe arch ribs 2 descends, the gravity center descends, and then the curved steel main beam 1 rotates back to the original position, so that the closing of the bridge deck is realized.

And one side of the upper surface of the curved steel girder 1, which is far away from the inclined steel pipe arch rib 2, is symmetrically and fixedly provided with steel girder deck railings 11 through bolts.

The bridge deck width of the upper surface of the curved steel main beam 1 is 5m, and the bridge deck width is arranged to be 0.25m (steel main beam bridge deck railings 11) +2.25m (sidewalks) +2.25m (bicycle lanes) +0.25m (steel main beam bridge deck railings 11) ═ 5.0m (bridge deck width).

The working principle is as follows: the specific construction process of the invention is as follows: foundation construction → construction of a curve steel girder 1 → construction of an inclined steel pipe arch rib 2 and a rotary hinge construction → tension construction of a tied arch suspender 3 → opening of a bridge deck → closing of the bridge deck → bridge deck and auxiliary construction.

(1) Construction of foundations

Firstly, cleaning a field and preparing materials; secondly, constructing a tied arch pier 8, a bearing platform and a pile foundation on the premise of reliable protection measures; an intelligent water pump device 9 and a water pump device water pipe 10 are pre-buried in the tied arch bridge pier 8.

(2) Construction of curved steel girder 1

Firstly, building a construction trestle, and carrying out overload prepressing on the construction trestle by not less than 1.1 times of the maximum construction load so as to ensure that the trestle has enough strength, rigidity and stability; secondly, the bowstring arch curve steel girder 1 is hoisted and welded on the trestle, and the tensioning end lower anchor device 5 is embedded into the root part of the curve steel girder 1 and is welded and fixedly connected with the diaphragm plate.

(3) Construction of inclined steel pipe arch rib 2 and rotary hinge

Firstly, floating the inclined steel pipe arch ribs 2 to the bridge site position, and assembling the inclined steel pipe arch ribs 2 on site by using a floating crane for hoisting; and two ends of the inclined steel pipe arch rib 2 are connected with the curved steel main beam 1, a tied arch rotating hinge 6 and a tied arch rotating shaft 7 are arranged below the inclined steel pipe arch rib, and the tied arch rotating hinge 6 and the tied arch rotating shaft 7 are arranged at the top of a 8-pier tied arch bridge pier.

(4) 3 tensioning construction of tied arch suspender

Firstly, installing a tied arch suspender 3, an anchoring end suspender upper anchoring device 4 and a tensioning end suspender lower anchoring device 5; secondly, the tied arch suspender 3 is tensioned according to the two sides and then the middle, and the tensioning is executed according to 100 percent of the designed tension force.

(5) Opening of bridge deck

The intelligent water pump device 9 arranged in the tied arch bridge pier 8 is used for gradually pumping river water into the inclined steel pipe arch rib 2, and the tied arch bridge integrally and automatically rotates β degrees after the gravity center of the inclined steel pipe arch rib 2 moves upwards to a critical value along with the rising of the water level injected into the inclined steel pipe arch rib 2, so that the opening of the bridge deck is realized.

(6) Bridge deck closure

The intelligent water pump device 9 arranged in the tied arch bridge pier 8 is used for gradually discharging river water in the inclined steel tube arch rib 2, the gravity center of the inclined steel tube arch rib 2 moves downwards along with the falling of the water level injected into the inclined steel tube arch rib 2, the tied arch bridge is reset integrally and automatically rotates β degrees, and the curved steel box girder falls back to the support, so that the closing of the bridge floor is realized.

(7) Bridge deck and auxiliary construction

And (3) constructing the steel girder bridge deck railings 11 and the bridge deck pavement.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.