CN220521082U - Corrugated pipe connecting structure for joint of precast concrete bridge deck of steel-concrete composite girder bridge - Google Patents

Abstract

The utility model relates to a joint corrugated pipe connecting structure of a precast concrete bridge deck plate of a steel-concrete composite beam bridge, which comprises a concrete bridge deck plate and steel beams, wherein the concrete bridge deck plate is formed by splicing precast bridge deck plates, and wet joints are arranged between adjacent precast bridge deck plates; the wet joint is internally provided with corrugated pipes, annular reinforcing steel bars are arranged at certain intervals, the annular reinforcing steel bars extend out of the prefabricated bridge decks at two sides and are arranged in a staggered mode, the end parts of the annular reinforcing steel bars extend into the corrugated pipes, ultra-high performance concrete is poured into the corrugated pipes, and common concrete or fiber concrete is poured into the wet joint outside the corrugated pipes. The joint corrugated pipe connecting structure of the precast concrete bridge deck plate of the steel-concrete composite girder bridge has reasonable design and simple structure, improves the construction speed and quality of wet joint pouring, reduces the construction period, saves the construction cost, has simple method and has great application prospect.

Description

Corrugated pipe connecting structure for joint of precast concrete bridge deck of steel-concrete composite girder bridge

Technical Field

The utility model relates to the field of civil engineering, in particular to a joint corrugated pipe connecting structure of a precast concrete bridge deck of a steel-concrete composite girder bridge.

Background

The assembled concrete beam bridge and the assembled steel-concrete composite structure beam bridge are widely applied to various bridge structures due to the characteristics of high construction speed, small social influence and the like. The connecting method of the prefabricated bridge deck is an important factor influencing the assembly efficiency of the reinforced concrete composite beam, and most of the prefabricated bridge deck at home and abroad at present is mainly reserved with annular steel bar cast-in-situ wet joints.

In general, in order to enhance the bonding strength of the precast slab interface, the wet joint needs to be subjected to artificial roughening which is complex and complicated and difficult to ensure the quality of the interface before pouring. The deflection deformation of the reserved steel bars of the wet joints causes difficult guarantee of the field construction quality, and the wet joints are damaged to different degrees such as cracking, collapse, falling and diaphragm joint fracture along with the service life of the active bridge and the change of traffic load. In the prior art, the common concrete wet joint has large width and longer steel bar anchoring length, and the interfaces are mostly in a mechanical roughening mode, so that the on-site pouring workload is large, the treatment process is complex, the roughening depth and the quality are difficult to control, the control of the wet joint construction quality is not facilitated, and the development of the prefabricated bridge is not facilitated.

Disclosure of Invention

In view of the above, the utility model aims to provide a joint corrugated pipe connecting structure of a precast concrete bridge deck of a steel-concrete composite girder bridge, which improves the construction speed and quality of wet joint pouring.

The utility model is realized by adopting the following scheme: the joint corrugated pipe connecting structure of the precast concrete bridge deck plate of the steel-concrete composite beam bridge comprises concrete bridge deck plates and steel beams, wherein the concrete bridge deck plates are formed by splicing precast bridge deck plates, and wet joints are arranged between adjacent precast bridge deck plates; the wet joint is internally provided with corrugated pipes, annular reinforcing steel bars are arranged at certain intervals, the annular reinforcing steel bars extend out of the prefabricated bridge decks at two sides and are arranged in a staggered mode, the end parts of the annular reinforcing steel bars extend into the corrugated pipes, ultra-high performance concrete is poured into the corrugated pipes, and common concrete or fiber concrete is poured into the wet joint outside the corrugated pipes.

Further, vertical holes for the annular steel bars to penetrate are formed in positions, corresponding to the annular steel bars, of the corrugated pipes, and the width of each vertical hole is 5 mm-10 mm larger than the diameter of each annular steel bar.

Furthermore, the corrugated pipe is internally penetrated with a twisted steel bar, and two ends of the twisted steel bar penetrate through ports at two ends of the corrugated pipe and then are anchored at the outer side of the corrugated pipe.

Furthermore, a plurality of reinforcement cages which are composed of a plurality of main reinforcements and at least one stirrup are arranged in the corrugated pipe.

Compared with the prior art, the utility model has the following beneficial effects: the joint corrugated pipe connecting structure of the precast concrete bridge deck plate of the steel-concrete composite girder bridge has reasonable design and simple structure, improves the construction speed and quality of wet joint pouring, reduces the construction period, saves the construction cost, has simple method and has great application prospect.

The present utility model will be further described in detail below with reference to specific embodiments and associated drawings for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial construction of an embodiment of the present utility model;

FIG. 3 is a schematic view of a first embodiment of the present utility model;

FIG. 4 is a second cross-sectional view of an embodiment of the present utility model;

the reference numerals in the figures illustrate: 1-prefabricated bridge deck, 2-bellows, 3-annular steel bars, 4-vertical holes, 5-welded nail connectors, 6-steel beams, 7-screw steel bars and 8-steel bar cages.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Embodiment one: as shown in fig. 1-3, a joint corrugated pipe connecting structure of a precast concrete deck slab of a steel-concrete composite beam bridge comprises a concrete deck slab and steel beams, wherein the concrete deck slab is formed by splicing precast deck slabs 1, and wet joints are arranged between adjacent precast deck slabs; the wet joint is internally provided with corrugated pipes 2, annular reinforcing steel bars 3 are arranged at certain intervals, the annular reinforcing steel bars 3 extend out of the prefabricated bridge decks 1 on two sides and are arranged in a staggered mode, the end parts of the annular reinforcing steel bars 3 extend into the corrugated pipes 2, ultra-high-performance concrete is poured into the corrugated pipes 2, and ordinary concrete or fiber concrete is poured into the wet joint outside the corrugated pipes. The utility model has the advantages of simple structure, reasonable design, improvement of the construction speed and quality of wet joint pouring, reduction of the construction period, saving of the construction cost, simple method and great application prospect.

In this embodiment, the corrugated pipe is provided with a vertical hole 4 for the annular steel bar to penetrate through at a position corresponding to the annular steel bar, and the width of the vertical hole 4 is 5 mm-10 mm larger than the diameter of the annular steel bar.

In this embodiment, the two sides or four sides of the prefabricated bridge deck slab extend outwards to form annular reinforcing steel bars 3, and when the two prefabricated bridge deck slabs 1 of the adjacent sections are spliced, the annular reinforcing steel bars 3 penetrate through the corrugated pipe 2 to be overlapped in a staggered manner.

In this embodiment, the corrugated pipe is internally perforated with a deformed bar 7, and two ends of the deformed bar 7 pass through two end ports of the corrugated pipe 2 and then are anchored outside the corrugated pipe 2.

In this embodiment, the upper surfaces of the upper flange plates of the steel beams are all provided with welding pin connectors 5 at certain intervals, and the welding pin connectors 5 are connected to the prefabricated bridge deck 1 above.

Embodiment two: as shown in fig. 4, a plurality of reinforcement cages 8 consisting of a plurality of main reinforcements and at least one stirrup are arranged in the bellows.

Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.

If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).

In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims (4)

1. The joint corrugated pipe connecting structure of the precast concrete bridge deck plate of the steel-concrete composite beam bridge comprises concrete bridge deck plates and steel beams, wherein the concrete bridge deck plates are formed by splicing precast bridge deck plates, and wet joints are arranged between adjacent precast bridge deck plates; the method is characterized in that: the wet joint is internally provided with corrugated pipes, annular reinforcing steel bars are arranged at certain intervals, the annular reinforcing steel bars extend out of the prefabricated bridge decks at two sides and are arranged in a staggered mode, the end parts of the annular reinforcing steel bars extend into the corrugated pipes, ultra-high performance concrete is poured into the corrugated pipes, and common concrete or fiber concrete is poured into the wet joint outside the corrugated pipes.

2. The steel-concrete composite girder bridge precast concrete deck joint bellows connecting structure according to claim 1, wherein: the corrugated pipe is provided with vertical holes for the annular steel bars to penetrate through at positions corresponding to the annular steel bars, and the width of each vertical hole is 5 mm-10 mm larger than the diameter of each annular steel bar.

3. The steel-concrete composite girder bridge precast concrete deck joint bellows connecting structure according to claim 1, wherein: threaded steel bars are arranged in the corrugated pipe in a penetrating mode, and two ends of the threaded steel bars penetrate through ports at two ends of the corrugated pipe and then are anchored to the outer side of the corrugated pipe.

4. The steel-concrete composite girder bridge precast concrete deck joint bellows connecting structure according to claim 1, wherein: and a plurality of reinforcement cages which are composed of a plurality of main reinforcements and at least one stirrup are arranged in the corrugated pipe.