阅读说明：本技术 多孔现浇箱涵底板及施工方法 (Porous cast-in-situ box culvert bottom plate and construction method ) 是由 王新泉 于 2020-12-18 设计创作，主要内容包括：本发明公开了多孔现浇箱涵底板及施工方法,属于混凝土浇筑技术领域。本发明包括步骤一、绑扎钢筋笼：通过钢筋笼绑扎胎架对钢筋辅助支撑,绑扎钢筋形成钢筋笼,完成后移除钢筋笼绑扎胎架；步骤二、外侧桁架支撑轨道移动侧模安装：步骤三、吊挂式抗浮易拆内侧角模安装；步骤四、混凝土浇筑：调节两侧模板位置,然后进行混凝土浇筑；步骤五、拆模：浇筑后的混凝土强度达标后进行拆除吊挂式抗浮易拆内侧角模。本发明通过减小箱涵钢筋笼绑扎难度,提高多孔箱涵底板模板安装定位精度,有效改善多孔现浇箱涵底板底板施工质量及施工效率。(The invention discloses a porous cast-in-situ box culvert bottom plate and a construction method, and belongs to the technical field of concrete pouring. The invention comprises the following steps of binding a reinforcement cage: auxiliary supporting is carried out on the reinforcing steel bars through a reinforcing steel bar cage binding jig frame, the reinforcing steel bars are bound to form a reinforcing steel bar cage, and the reinforcing steel bar cage binding jig frame is removed after the reinforcing steel bar cage binding jig frame is completed; step two, installing a movable side mold of the outer side truss support track: step three, mounting a hanging type anti-floating easy-to-detach inner side angle mold; step four, pouring concrete: adjusting the positions of the templates on the two sides, and then pouring concrete; step five, removing the mold: and after the strength of the poured concrete reaches the standard, the hanging type anti-floating easy-to-detach inner side angle mold is detached. According to the invention, the binding difficulty of the box culvert reinforcement cage is reduced, the installation and positioning precision of the porous box culvert bottom plate template is improved, and the construction quality and the construction efficiency of the porous cast-in-situ box culvert bottom plate are effectively improved.)

1. The construction method of the porous cast-in-situ box culvert bottom plate is characterized by comprising the following steps:

step one, binding a reinforcement cage: auxiliary supporting is carried out on the reinforcing steel bars through a reinforcing steel bar cage binding jig frame, the reinforcing steel bars are bound to form a reinforcing steel bar cage, and the reinforcing steel bar cage binding jig frame is removed after the reinforcing steel bar cage binding jig frame is completed;

step two, installing a movable side mold of the outer side truss support track: laying a track (16) on the cushion concrete (15), connecting a bottom outer mold beam (18) and an outer template (24) through a supporting and adjusting mechanism, connecting the edges of the bottom outer mold beam (18) and the outer template (24) through a demolding adjusting bolt (25), and installing a traveling wheel (19) corresponding to the track (16) below the bottom outer mold beam (18);

step three, installing a hanging type anti-floating easy-to-detach inner side angle mold: hoisting longitudinal support angle steels (26) by a crane to be arranged on one side of the steel reinforcement cage, wherein the longitudinal support angle steels (26) are arranged in pairs and at least one pair is arranged, and the two longitudinal support angle steels (26) arranged in pairs are connected by a pair of pull support rods (29);

step four, pouring concrete: adjusting the positions of the templates on the two sides, and then pouring concrete;

step five, removing the mold: and after the strength of the poured concrete reaches the standard, the hanging type anti-floating easy-to-detach inner side angle mold is detached.

2. The construction method of the porous cast-in-place box culvert bottom plate according to claim 1, wherein the movable side die of the outer truss support rail is moved to the next station after the die is removed.

3. The construction method of the porous cast-in-place box culvert bottom plate according to claim 1, wherein the reinforcement cage binding jig frame comprises a rectangular frame consisting of an upper transverse frame (2), a lower transverse frame (3) and two vertical frames (1), and further comprises a horizontal frame (5), and a horizontal frame base (9) is arranged at the ground end of the horizontal frame (5);

a row of rod penetrating holes (7) are formed in the vertical frame (2), a horizontal frame cross rod (6) is matched in the rod penetrating holes (7), one end of the horizontal frame cross rod (6) is connected with the horizontal frame (5), and a longitudinal rib (8) is arranged at the other end of the horizontal frame cross rod.

4. The construction method of the porous cast-in-place box culvert bottom plate according to claim 3, characterized in that a row of vertical frames (2) is laid along the box culvert pouring direction, two adjacent vertical frames (2) are connected through an upper vertical frame (10) and a lower vertical frame (11), and a row of transverse rib placing grooves (12) are respectively arranged on the upper vertical frame (10) and the lower vertical frame (11).

5. The construction method of the porous cast-in-place box culvert bottom plate according to claim 4, characterized in that the vertical frame supports (13) are respectively arranged at the upper end and the lower end of the vertical frame (1), and the upper vertical frame (10) and the lower vertical frame (11) are respectively fixed on the vertical frame supports (13) through bolts (14).

6. The construction method of the porous cast-in-place box culvert bottom plate according to claim 1, characterized in that the traveling mechanism comprises traveling wheels (19) and rails (16), the rails (16) are installed on the cushion concrete (15), the lower surfaces of the bottom outer cross mold beams (18) are provided with a pair of bottom outer mold longitudinal beams (17), and the traveling wheels (19) are installed below the bottom outer mold longitudinal beams (17).

7. The construction method of the porous cast-in-place box culvert bottom plate according to the claim 1, characterized in that the supporting and adjusting mechanism comprises an adjusting diagonal rod (22), hinged and hinged supports (19) at two ends of the adjusting diagonal rod (22), one hinged support (19) is fixed on the outer formwork (24), and the other hinged support (19) is fixed on the bottom outer cross formwork beam (18);

the surface of the outer template (24) is provided with a longitudinal edge (23), and the hinged connection support (19) is arranged on the longitudinal edge (23).

8. The construction method of the perforated cast-in-place box culvert bottom plate according to claim 1, characterized in that longitudinal support angle steel (26) at both ends is fixed on the outer formwork (24) through a counter-pull anchor rod, and the hoisting rings (30) are arranged on the longitudinal support angle steel (26).

9. The construction method of the perforated cast-in-place box culvert bottom plate according to claim 8, characterized in that the longitudinal support angle steel (26) is provided with a limiting longitudinal beam (27), the cushion concrete (15) is provided with a bottom membrane inner main rib, and the fixed limiting longitudinal beam (27) is fixed on the bottom membrane inner main rib through an anti-floating bolt (28).

10. A cellular cast-in-place box culvert floor cast by the method of any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of concrete pouring, and particularly relates to a porous cast-in-place box culvert bottom plate and a construction method.

Background

In the construction process of municipal engineering, the construction of a box culvert type reinforced concrete structure always restricts the construction period of an engineering and embodies the key part of construction quality. In traditional reinforced concrete box culvert formula structure construction, cast in situ concrete box culvert generally need divide into a plurality of sections construction, carries out setting up and demolising of a support respectively during every section construction, but the used manual work of this kind of way is many, and the efficiency of construction is low, and the construction cycle is long to there is great potential safety hazard.

According to the construction requirements of municipal engineering in recent years, the reinforced concrete box culvert type structural engineering often has the characteristics of large concrete amount, high construction strength and tight construction period requirement, the box culvert engineering is constructed by using a light steel mould trolley and is popularized, but the method needs to firstly finish the binding work of a reinforcement cage and the pouring of cast-in-place box culvert bottom plate concrete, so that the optimal design needs to be carried out aiming at the existing construction method to accelerate the construction progress of the box culvert type reinforced concrete and ensure the construction quality.

Disclosure of Invention

The invention aims to provide a porous cast-in-situ box culvert bottom plate and a construction method, which can improve the installation and positioning precision of a porous box culvert bottom plate template and effectively improve the construction quality and the construction efficiency of the porous cast-in-situ box culvert bottom plate by reducing the binding difficulty of a box culvert reinforcement cage.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a porous cast-in-situ box culvert bottom plate and a construction method, which comprises the following steps:

step one, binding a reinforcement cage: auxiliary supporting is carried out on the reinforcing steel bars through a reinforcing steel bar cage binding jig frame, the reinforcing steel bars are bound to form a reinforcing steel bar cage, and the reinforcing steel bar cage binding jig frame is removed after the reinforcing steel bar cage binding jig frame is completed;

step two, installing a movable side mold of the outer side truss support track: paving a track on the cushion concrete, connecting the bottom outer mold beam and the outer template through a supporting and adjusting mechanism, connecting the edges of the bottom outer mold beam and the outer template through demolding adjusting bolts, and installing a traveling wheel corresponding to the track below the bottom outer mold beam;

step three, installing a hanging type anti-floating easy-to-detach inner side angle mold: hoisting one side of a longitudinal support angle steel placing reinforcement cage by a crane, wherein the longitudinal support angle steel is arranged in pairs and at least one pair of longitudinal support angle steel is arranged, and the two longitudinal support angle steel arranged in pairs are connected by a pair of pull support rods;

step four, pouring concrete: adjusting the positions of the templates on the two sides, and then pouring concrete;

step five, removing the mold: and after the strength of the poured concrete reaches the standard, the hanging type anti-floating easy-to-detach inner side angle mold is detached.

And further, moving the outer side truss support rail moving side die to the next station after the die is removed.

Furthermore, the reinforcement cage binding jig frame comprises a rectangular frame consisting of an upper transverse frame, a lower transverse frame and two vertical frames, and further comprises a horizontal frame, wherein a horizontal frame base is arranged at the ground end of the horizontal frame;

the vertical frame is provided with a row of rod penetrating holes, horizontal frame cross rods are matched in the rod penetrating holes, one end of each horizontal frame cross rod is connected with the horizontal frame, and the other end of each horizontal frame cross rod is provided with a longitudinal rib.

Furtherly, the grudging post is laid one row along the box culvert direction of pouring, is equipped with between two adjacent grudging posts through indulging the frame and indulging the frame connection down on, indulges on the frame and indulges down and all be equipped with one row of horizontal muscle groove of putting.

Furthermore, the upper end and the lower end of the vertical frame are both provided with vertical frame supports, and the upper vertical frame and the lower vertical frame are both fixed on the vertical frame supports through bolts.

Furthermore, the travelling mechanism comprises travelling wheels and a track, the track is installed on the cushion concrete, a pair of bottom outer mold longitudinal beams are arranged on the lower surface of the bottom outer transverse mold beam, and the travelling wheels are installed below the bottom outer mold longitudinal beams.

Furthermore, the supporting and adjusting mechanism comprises an adjusting inclined rod, hinged supports at two ends of the adjusting inclined rod are hinged and hinged, one hinged support is fixed on the outer template, and the other hinged support is fixed on the bottom outer transverse template beam;

the surface of the outer template is provided with a longitudinal edge, and the hinged support is arranged on the longitudinal edge.

Furthermore, the longitudinal support angle steel positioned at the two ends is fixed on the outer template through the opposite-pull anchor rods, and the longitudinal support angle steel is provided with a hanging ring.

Furthermore, a limiting longitudinal beam is installed on the longitudinal support angle steel, an inner bottom membrane main rib is arranged on the cushion concrete, and the fixed limiting longitudinal beam is fixed on the inner bottom membrane main rib through an anti-floating bolt.

The porous cast-in-place box culvert bottom plate is cast by the method.

The invention has the following beneficial effects:

cast-in-place box culvert steel reinforcement cage ligature bed-jig puts the muscle groove through reservation on the bed-jig, can the accurate positioning box culvert top bottom plate and the reinforcing bar position of side wall, effectively improves box culvert steel reinforcement cage ligature speed and precision, improves construction quality.

The cast-in-situ box culvert bottom plate template system adopts the outer truss support track to move the side mold and the carrying type inner mold to form the integral walking type template, and has the advantages of simple operation, rapid transfer and high construction efficiency.

Cast-in-place box culvert bottom plate template is pour, adopts the anti easy removable interior angle mould system that floats of suspension type, can effectively improve interior angle mould installation positioning accuracy, reduces the work load of installation, extension simultaneously, improves the efficiency of construction.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front structure view of a cast-in-situ box culvert reinforcement cage binding jig frame

FIG. 2 is a side structure view of a cast-in-situ box culvert reinforcement cage binding jig;

FIG. 3 is a structural view of a cast-in-situ box culvert bottom plate template;

FIG. 4 is a view of the movable side of the outer truss support track;

in the drawings, the components represented by the respective reference numerals are listed below:

1-vertical frame, 2-upper horizontal frame, 3-lower horizontal frame, 4-longitudinal rib groove, 5-horizontal frame, 6-horizontal frame cross bar, 7-bar through hole, 8-longitudinal rib, 9-horizontal frame base, 10-upper vertical frame, 11-lower vertical frame, 12-transverse rib groove, 13-vertical frame support, 14-bolt, 15-cushion concrete, 16-track, 17-bottom outer mold longitudinal beam, 18-bottom outer mold transverse beam, 19-walking wheel, 20-anchor bolt, 21-hinged support, 22-adjusting inclined bar, 23-longitudinal ridge, 24-outer mold plate, 25-demolding adjusting bolt, 26-longitudinal supporting angle steel, 27-fixed limiting longitudinal beam, 28-anti-floating bolt, 29-counter-pulling supporting bar, 30-hanging ring.

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.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

The invention does not need to describe the technical requirements of welding between the reinforcing steel bars, concrete pouring key points, rammed earth, pile foundation construction quality standards and the like, and mainly explains the implementation mode of the structure of the invention.

Referring to fig. 1-4, a construction method of a porous cast-in-place box culvert bottom plate includes the following steps:

step one, binding a reinforcement cage: auxiliary supporting is carried out on the reinforcing steel bars through a reinforcing steel bar cage binding jig frame, the reinforcing steel bars are bound to form a reinforcing steel bar cage, and the reinforcing steel bar cage binding jig frame is removed after the reinforcing steel bar cage binding jig frame is completed;

concretely, steel reinforcement cage ligature bed-jig includes the rectangular frame who comprises last crossbearer 2, lower crossbearer 3 and two grudging posts 1, still includes horizontal stand 5, and the ground end of horizontal stand 5 is equipped with horizontal stand base 9, has vertical putting muscle groove 4 wherein on last crossbearer 2, the lower crossbearer 3.

A row of rod penetrating holes 7 are formed in the vertical frame 2, a horizontal frame cross rod 6 is matched in the rod penetrating holes 7, one end of the horizontal frame cross rod 6 is connected with the horizontal frame 5, and a longitudinal rib 8 is arranged at the other end of the horizontal frame cross rod.

The two vertical frames 1 are connected by an upper vertical frame 10 and a lower vertical frame 11.

Wherein, a row of transverse rib-placing grooves 12 are arranged on the upper vertical frame 10 and the lower vertical frame 11.

Preferably, the upper end and the lower end of the vertical frame 1 are both provided with vertical frame supports 13, and the upper vertical frame 10 and the lower vertical frame 11 are both fixed on the vertical frame supports 13 through bolts 14;

in the reinforcement cage binding, the reinforcement is supported by the transverse reinforcement placing groove 12 and the longitudinal and longitudinal reinforcements 8 for binding, and the stability of the vertical frame 1 is supported by the vertical frame 2.

Step two, installing a movable side mold of the outer side truss support track: the track 16 is laid on the cushion concrete 15, the bottom outer mold cross beam 18 and the outer mold plate 24 are connected through a supporting and adjusting mechanism, the edges of the bottom outer mold cross beam 18 and the outer mold plate 24 are connected through a demolding adjusting bolt 25, and the traveling wheels 19 corresponding to the track 16 are installed below the bottom outer mold cross beam 18.

Specifically, the outer truss support track moving side mold comprises an outer mold plate 24, a bottom outer transverse mold beam 18, a traveling mechanism and a support adjusting mechanism.

The edges of the outer template 24 and the bottom outer transverse template beam 18 are connected through a demoulding adjusting bolt 25, and the two inner surfaces of the outer template 24 and the bottom outer transverse template beam 18 are connected through a supporting adjusting mechanism;

preferably, the surface of the outer template 24 is provided with a longitudinal edge 23, and the connecting support 19 is arranged on the longitudinal edge 23.

The supporting and adjusting mechanism comprises an adjusting inclined rod 22, hinged supports 19 at two ends of the adjusting inclined rod 22, one hinged support 19 is fixed on an outer template 24, and the other hinged support 19 is fixed on a bottom outer transverse template beam 18.

The adjusting diagonal rods 22 are telescopic rods and are designed in a detachable mode, and accordingly the adjusting diagonal rods can correspond to outer templates 24 and bottom outer transverse formwork beams 18 with different sizes.

Two rows are arranged on the outer side truss support track moving side die and the cushion concrete 15.

The outer side truss support track moving side mold slides on the cushion concrete 15 through the traveling mechanism;

the running mechanism comprises running wheels 19 and a track 16, the track 16 is installed on the cushion concrete 15, a pair of bottom outer mold longitudinal beams 17 are arranged on the lower surface of the bottom outer transverse mold beam 18, and the running wheels 19 are installed below the bottom outer mold longitudinal beams 17.

The other bottom outer transverse formwork beam 18 is provided with an anchor bolt 20, and the outer truss support rail moving side mould is locked by the anchor bolt 20 so as to prevent the outer truss support rail moving side mould from moving.

Step three, installing a hanging type anti-floating easy-to-detach inner side angle mold: the longitudinal support angle steels 26 are hoisted by the crane and arranged on one side of the steel reinforcement cage, the longitudinal support angle steels 26 are arranged in pairs and at least one pair is arranged, and the two longitudinal support angle steels 26 arranged in pairs are connected through a pair of tension support rods 29.

The suspension type anti-floating easy-to-dismount inner side angle formwork system comprises longitudinal support angle steels 26 and fixed limiting longitudinal beams 27, wherein the longitudinal support angle steels 26 are arranged in pairs and at least one pair is arranged, and the two longitudinal support angle steels 26 arranged in pairs are connected through a pair of pull support rods 27;

the suspended anti-floating easy-to-disassemble inner side angle mold system is suspended between the two outer side truss support track moving side molds.

Specifically, the longitudinal support angles 26 at both ends are fixed to the outer formwork 24 by means of split anchors.

The fixed limit longitudinal beam 27 and the longitudinal support angle 26 are connected through a diagonal brace 29.

Be equipped with the interior main muscle of basement membrane on bedding concrete 15, install spacing longeron 27 on the vertical angle steel 26 of supporting, spacing longeron 27 is connected in the steel reinforcement cage, fixes spacing longeron 27 through anti-floating bolt 28 and fixes on the interior main muscle of basement membrane, and the interior main muscle of basement membrane is the strengthening rib that sets up on bedding concrete 15 surface in its.

When the longitudinal support angle steel 26 exceeds one pair, two adjacent pairs of longitudinal support angle steel 26 are arranged side by side in an abutting mode.

The hoisting rings 30 are arranged on the longitudinal support angle steel 26, and the hoisting ropes are bolted by erecting a bracket to hoist and support the longitudinal support angle steel 26.

Step four, pouring concrete: adjusting the positions of the templates at the two sides, namely pushing the cast-in-place box culvert bottom plate template to perform position fine adjustment at the position of the reinforcement cage through a traveling mechanism, and then performing concrete pouring;

step five, removing the mold: and after the strength of the poured concrete reaches the standard, the hanging type anti-floating easy-to-detach inner side angle mold is detached.

And moving the movable side die of the outer side truss support rail to the next station after the die is removed.

The porous cast-in-place box culvert bottom plate is cast by the method.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.