CN212611922U

CN212611922U - Pier column connection structure of assembled bridge

Info

Publication number: CN212611922U
Application number: CN202020850694.9U
Authority: CN
Inventors: 崔剑峰; 向建军; 谭超; 贺耀北; 李瑜; 李文武; 彭江辉
Original assignee: Hunan Provincial Communications Planning Survey and Design Institute Co Ltd
Current assignee: Hunan Provincial Communications Planning Survey and Design Institute Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-02-26
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a pier stud connection structure of assembled bridge, including prefabricated pier stud and with prefabricated pier stud end connection's connecting piece, prefabricated pier stud with the connecting piece is through cast-in-place high-strength concrete seam connection, the tip of prefabricated pier stud with the tip of connecting piece all is equipped with many seam reinforcing bars that extend in to cast-in-place high-strength concrete seam. The utility model provides a prefabricated pier stud and connecting piece can adopt the prefab of mill, can reduce cast-in-place construction work load in scene, do benefit to scale, batch production. The utility model discloses a set up cast-in-place high-strength concrete seam, make full use of seam reinforcing bar and high-strength concrete's bonding property and closely knit excellent performance's characteristics need not welding, ligature between the seam reinforcing bar of prefabricated pier stud and connecting piece, can satisfy the structure atress requirement, can improve the durability at seam position.

Description

Pier column connection structure of assembled bridge

Technical Field

The utility model belongs to the bridge field especially relates to a pier stud connection structure of assembled bridge.

Background

In the current urban rapid construction, the upper structure prefabrication and assembly technology is mature, the prefabrication and assembly of the lower structure is an important part of bridge industrialization, and the prefabrication and assembly technology is still in the development stage.

At present, the connection joints of the assembled pier, the capping beam and the bearing platform mainly comprise grouting sleeve steel bar connection, grouting corrugated pipe connection, steel strand connection, socket joint type connection and slot type connection. The connecting joint has the advantages and disadvantages that the connecting cost of the grouting sleeve is high, the requirement on positioning precision is high, the time consumption and the quality assurance rate of the steel strand connecting steel strand tensioning are low, the mechanical property of the socket joint under the action of the earthquake is yet to be researched, the concrete pouring amount of the slot type connecting site is large, and the like.

Therefore, a connection structure which is low in cost, strong in applicability, high in efficiency and excellent in mechanical property and aims at connection joints of the lower pier stud, the bearing platform and the cover beam is urgently needed to be developed, so that large-scale and industrial production is facilitated, and the industrial process of bridge engineering construction is further promoted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough and the defect mentioned in the above background art, provide a pier stud connection structure of assembled bridge that simple structure, safe and reliable, labour saving and time saving. In order to solve the technical problem, the utility model provides a technical scheme does:

the utility model provides a pier stud connection structure of assembled bridge, including prefabricated pier stud (being prefabricated by reinforced concrete and forming) and with prefabricated pier stud end connection's connecting piece, prefabricated pier stud with the connecting piece is through cast-in-place high-strength concrete seam connection, the tip of prefabricated pier stud with the tip of connecting piece all is equipped with many seam reinforcing bars that extend in to cast-in-place high-strength concrete seam.

In the pier column connecting structure of the assembled bridge, a protrusion-groove positioning system for positioning when the prefabricated pier column is connected with the connecting piece is arranged between the prefabricated pier column and the connecting piece. More preferably, the protrusion-groove positioning system comprises a cylindrical protrusion and a cylindrical groove, the end of the prefabricated pier stud is provided with the cylindrical protrusion or the cylindrical groove, and the end of the connecting piece is provided with the cylindrical groove matched with the size of the cylindrical protrusion or the cylindrical protrusion matched with the size of the cylindrical groove. In the protrusion-groove positioning system, when one principle is maintained, namely the prefabricated pier stud is connected with the connecting piece, one end of the prefabricated pier stud and the connecting piece adopts the cylindrical protrusion, and the other end of the prefabricated pier stud and the connecting piece adopts the cylindrical groove. Preferably, when the prefabricated pier stud is connected with the bearing platform and the cover beam, the upper end of the prefabricated pier stud is provided with a cylindrical protrusion, and the lower end of the prefabricated pier stud is provided with a cylindrical groove, so that the prefabricated pier stud can be conveniently hoisted. A projection-groove positioning system is arranged at the joint of the prefabricated pier stud and the connecting piece, and the prefabricated pier stud and the connecting piece can be quickly positioned by matching the cylindrical projection and the cylindrical groove, so that the construction is convenient, and the time and the labor are saved.

In the pier column connection structure of the assembly type bridge, preferably, the connecting member includes a bearing platform formed by cast-in-place reinforced concrete, and the prefabricated pier column is arranged on the upper portion of the bearing platform. The utility model provides a pier stud joint construction can realize the quick construction between cushion cap and the prefabricated pier stud, and efficiency of construction, construction quality are guaranteed.

In the above pier stud connection structure of the assembly type bridge, preferably, the connecting member includes a capping beam prefabricated from reinforced concrete, and the capping beam is disposed on an upper portion of the prefabricated pier stud. The utility model discloses in, the bent cap adopts the prefab, and the pier stud also adopts the prefab, through above-mentioned pier stud joint construction, can two above-mentioned quick constructions between the prefab, efficiency of construction, construction quality are guaranteed.

In the pier column connection structure of the fabricated bridge, preferably, the thickness of the cast-in-place high-strength concrete joint is 30-40 cm. Through above-mentioned pier stud connection structure, the thickness value of seam allows very little when guaranteeing joint strength, and the construction scale is little, and the material is saved.

In the pier column connection structure of the assembled bridge, preferably, the joint reinforcing steel bars of the prefabricated pier columns are extension reinforcing steel bars obtained by extending the full-length reinforcing steel bars in the prefabricated pier columns outwards.

In the pier column connection structure of the fabricated bridge, preferably, the cast-in-place high-strength concrete joint is a cast-in-place UHPC joint. UHPC can guarantee the mechanical property of the joint.

Compared with the prior art, the utility model has the advantages of:

1. the utility model provides a prefabricated pier stud and connecting piece (like bent cap) can adopt the prefab of mill, can reduce cast-in-place construction work load in scene, do benefit to scale, batch production.

2. The utility model discloses a set up cast-in-place high-strength concrete seam, make full use of seam reinforcing bar and high-strength concrete's bonding property need not welding, ligature between the seam reinforcing bar of prefabricated pier stud and connecting piece, can satisfy the structure atress requirement.

3. The utility model discloses a prefabricated pier stud and connecting piece of cast-in-place high-strength concrete seam connection, the closely knit excellent performance's of make full use of high-strength concrete characteristics can improve the durability at seam position.

4. The utility model discloses pier stud connection structure's simple structure, mechanical properties is good, safe and reliable.

Drawings

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

Fig. 1 is a schematic structural view of the pier stud connection structure of the assembled bridge of the present invention.

Fig. 2 is a schematic structural view of the capping beam.

Fig. 3 is a schematic structural view of the prefabricated pier stud.

Fig. 4 is a schematic structural view of the platform.

Illustration of the drawings:

1. prefabricating a pier stud; 2. casting a high-strength concrete joint in situ; 3. jointing reinforcing steel bars; 4. a cylindrical protrusion; 5. a cylindrical recess; 6. a bearing platform; 7. and a capping beam.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.

Example (b):

as shown in fig. 1 to 4, the pier stud connection structure of the fabricated bridge of the present embodiment includes a prefabricated pier stud 1 (prefabricated by reinforced concrete) and a connecting member connected to an end of the prefabricated pier stud 1, the prefabricated pier stud 1 and the connecting member are connected by a cast-in-place high strength concrete joint 2(UHPC material), and a plurality of joint reinforcing bars 3 extending into the cast-in-place high strength concrete joint 2 are disposed at both the end of the prefabricated pier stud 1 and the end of the connecting member. The connecting piece comprises a bearing platform 6 formed by casting reinforced concrete in situ and a cover beam 7 formed by prefabricating the reinforced concrete, the prefabricated pier stud 1 is arranged on the upper part of the bearing platform 6, and the cover beam 7 is arranged on the upper part of the prefabricated pier stud 1.

In this embodiment, a protrusion-groove positioning system for positioning when the prefabricated pier stud 1 is connected to the connecting member is provided between the prefabricated pier stud 1 and the connecting member. Specifically, the protrusion-groove positioning system comprises a cylindrical protrusion 4 arranged at the upper end of the prefabricated pier stud 1 and a cylindrical groove 5 arranged at the lower end of the prefabricated pier stud 1, the upper end of the bearing platform 6 is provided with the cylindrical protrusion 4, and the lower end of the bent cap 7 is provided with the cylindrical groove 5.

In this embodiment, the thickness of the cast-in-place high-strength concrete joint 2 is 30-40cm (any of the above ranges).

In this embodiment, the joint reinforcing steel bar 3 of prefabricated pier stud 1 is the extension reinforcing steel bar that the full length muscle in the prefabricated pier stud 1 extended outward and obtained.

Claims

1. The utility model provides a pier stud joint construction of assembled bridge, its characterized in that, including prefabricated pier stud (1) and with prefabricated pier stud (1) end connection's connecting piece, prefabricated pier stud (1) with the connecting piece is connected through cast-in-place high strength concrete seam (2), the tip of prefabricated pier stud (1) with the tip of connecting piece all is equipped with many seam reinforcing bars (3) that extend in to cast-in-place high strength concrete seam (2).

2. The pier connection construction of the assembled bridge according to claim 1, wherein a protrusion-groove positioning system for positioning when the prefabricated pier (1) is connected with the connecting member is provided between the prefabricated pier (1) and the connecting member.

3. The pier connection construction of an assembled bridge according to claim 2, wherein the protrusion-groove positioning system comprises a cylindrical protrusion (4) and a cylindrical groove (5), the prefabricated pier (1) end is provided with the cylindrical protrusion (4) or the cylindrical groove (5), and the connecting piece end is provided with the cylindrical groove (5) matched with the cylindrical protrusion (4) in size or the cylindrical protrusion (4) matched with the cylindrical groove (5) in size.

4. The pier connection construction of an assembled bridge according to any one of claims 1 to 3, wherein the connection member comprises a cap (6) cast in place of reinforced concrete, and the prefabricated pier (1) is provided at an upper portion of the cap (6).

5. The pier connection construction of an assembled bridge according to any one of claims 1 to 3, wherein the connection member comprises a capping beam (7) prefabricated from reinforced concrete, the capping beam (7) being provided at an upper portion of the prefabricated pier (1).

6. The pier connection construction of an assembled bridge according to any one of claims 1 to 3, wherein the cast-in-place high strength concrete joint (2) has a thickness of 30 to 40 cm.

7. The pier connection construction of an assembled bridge according to any one of claims 1 to 3, wherein the joint reinforcement (3) of the prefabricated pier stud (1) is an extension reinforcement in which a full length reinforcement in the prefabricated pier stud (1) is extended outward.