CN214737338U

CN214737338U - Prefabricated pier structure

Info

Publication number: CN214737338U
Application number: CN202120874565.8U
Authority: CN
Inventors: 郭晓光; 赵昌建; 李斐然; 白璐涵; 李俊方; 王晋博; 刘冲; 史锦; 张阳; 张凯玮; 范智超
Original assignee: Henan Provincial Communication Planning and Design Institute Co Ltd
Current assignee: Henan Provincial Communication Planning and Design Institute Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-11-16
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a prefabricated pier structure, the pile foundation comprising four equidistant arrangement and a square central connecting line also comprises a prefabricated pier, the prefabricated pier comprises a square pier body and a square pier bearing platform, the square pier bearing platform is positioned below the pier body, and pier reinforcing steel bars are arranged around the pier bearing platform; the middle of the prefabricated bearing platform sinks to form a central groove used for placing a pier bearing platform, four corners of the central groove are provided with mounting holes used for inserting the pile foundation, and pile foundation bearing platform reinforcing steel bars which are mutually staggered with the pier reinforcing steel bars are arranged on the inner side wall around the central groove. The utility model discloses simple structure, it is prefabricated convenient, the assembly is firm, and it can conveniently link to each other with pile foundation, prefabricated pier through reserving mounting hole and central recess on prefabricated cushion cap, shortens construction cycle.

Description

Prefabricated pier structure

Technical Field

The utility model belongs to the technical field of bridge structural design technique and specifically relates to a prefabricated pier structure is related to.

Background

With the progress of human society and the development of scientific technology, the bridge construction has achieved unprecedented achievement. In recent years, in order to carry out environmental governance and achieve the purposes of energy conservation and emission reduction, a large number of policy measures are put forward by governments in China, green construction technology is greatly popularized in the field of engineering construction, a plurality of principles, guidelines and regulations are gradually developed, and the development of green buildings is greatly promoted.

The fully prefabricated bridge can reduce the phenomena of high integral energy consumption, low construction efficiency, large field operation amount and the like of the traditional bridge in construction, and becomes the first choice of a plurality of bridge builders. The main components are prefabricated in factories, assembled after being transported to the site, and a small number of parts are connected in a cast-in-place or other connection mode, so that the workload of site construction operation can be reduced, and the construction period can be shortened.

The connection of the prefabricated bridge pier and the bearing platform is particularly important in bridge design and construction. The connected mode of current prefabricated pier and cushion cap includes: grouting sleeve connection, grouting pipeline connection, socket joint formula connection, grout mouth connection, post-tensioned prestressing force connection and wet seam connection etc. above-mentioned connected mode fault-tolerant rate is lower, and structural stress performance is relatively poor, and because the structure is irregular, prefabricated pier is deposited very inconveniently at the scene.

Disclosure of Invention

In order to solve the problem, the utility model provides a prefabricated pier structure specifically can take following technical scheme:

prefabricated pier structure, arrange, the center line is the pile foundation of square including four equidistance, still include

The prefabricated bridge pier comprises a square pier body and a square pier bearing platform, wherein the square pier body is of a square structure, the square pier bearing platform is positioned below the pier body, and pier steel bars are arranged on the periphery of the pier bearing platform;

the middle of the prefabricated bearing platform sinks to form a central groove used for placing a pier bearing platform, four corners of the central groove are provided with mounting holes used for inserting the pile foundation, and pile foundation bearing platform reinforcing steel bars which are mutually staggered with the pier reinforcing steel bars are arranged on the inner side wall around the central groove.

The degree of depth of central recess is 1/3 of prefabricated cushion cap height, and pier reinforcing bar and pile foundation cushion cap reinforcing bar are crisscross each other to be inserted when prefabricated cushion cap assembles with the pier cushion cap and are put, and has pour cushion cap connection concrete in central recess.

The inner side wall and the bottom wall of the central groove are rough surfaces, and the contact surface between the bottom of the pier bearing platform and the central groove is a rough surface.

And reserved connecting steel bars are arranged at the top of the pile foundation and on the inner sides of the mounting holes.

And after the reserved connecting steel bars are bound, pile foundation and pile cap connecting concrete is poured in the mounting holes.

The utility model provides a prefabricated pier structure, simple structure, it is prefabricated convenient, the assembly is firm, it can conveniently link to each other with pile foundation, prefabricated pier through reserving mounting hole and central groove on prefabricated cushion cap, wherein, prefabricated pier bottom sets up the pier cushion cap with prefabricated cushion cap looks adaptation, and reserves pier reinforcing bar around it, thereby can reach the stress structure similar to cast-in-place method when connecting prefabricated pier and prefabricated cushion cap, improve whole atress performance; secondly, the pier bearing platform at the bottom of the prefabricated pier is large in area, so that a special pedestal is not required to be prepared when the prefabricated pier is stored, and time and labor are saved; and thirdly, the mode of prefabricating the bearing platform is adopted, so that the workload of the pile foundation bearing platform constructed on site can be reduced, and the construction period is shortened.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic structural view of the prefabricated bridge pier of fig. 1.

Fig. 4 is a bottom view of fig. 3.

Fig. 5 is a schematic structural view of the prefabricated cap of fig. 1.

Fig. 6 is a top view of fig. 5.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific construction processes are given, but the scope of the present invention is not limited to the following embodiments.

As shown in fig. 1-6, prefabricated pier structure, arrange, the center line is the pile foundation 1 of square including four equidistance, still include prefabricated pier 2 and prefabricated cushion cap 3. The prefabricated bridge pier is composed of a square pier body 2.1 and a square pier bearing platform 2.2, wherein the square pier bearing platform is located below the square pier body 2.1, and pier steel bars 2.3 are preset around the pier bearing platform 2.2. The prefabricated bearing platform 3 is of a cube structure, a central groove 3.1 for placing a pier bearing platform 2.2 is formed by sinking the center of the top surface of the prefabricated bearing platform, mounting holes 3.2 for inserting the pile foundations 1 are reserved at the four corners of the central groove 3.1 respectively, and pile foundation bearing platform reinforcing steel bars 3.3 which are mutually staggered with the pier reinforcing steel bars 2.3 are reserved on the peripheral inner side wall of the central groove 3.1. In addition, pile foundation 1 top and mounting hole 3.2 inboard all are provided with reserved connecting reinforcement. Normally, the depth of the central groove 3.1 is 1/3 of the height of the prefabricated bearing platform 3, the inner side wall and the bottom wall of the central groove 3.1 are rough surfaces, and the contact surface between the bottom of the pier bearing platform 2.2 and the central groove 3.1 is also rough surfaces, so that the parts can keep good contact during assembly. When assembling prefabricated pile cap 3 and pile foundation 1, binding the top of pile foundation 1 and the reserved connecting steel bars on the inner side of mounting hole 3.2, and then pouring the concrete for connecting pile foundation and pile cap in mounting hole 3.2. When the prefabricated bearing platform 3 and the prefabricated bridge pier 2 are assembled, bridge pier reinforcing steel bars 2.3 and pile foundation bearing platform reinforcing steel bars 3.3 are bound, and then bearing platform connecting concrete is poured in the central groove 3.1.

The utility model discloses when the construction, including following step:

firstly, pouring the pile foundation 1 at a preset position according to a design scheme.

And secondly, manufacturing a prefabricated pier 2 according to the design requirements of the bridge. Specifically, prefabricated site flattening is carried out at first, places the bottom template, then ligature pier body 2.1 reinforcing bar and pier cushion cap 2.2 part reinforcing bar, later installation template, concreting to reserve pier cushion cap 2.2 pier reinforcing bar 2.3 all around, after the concrete reaches design strength, demolish the template.

And thirdly, manufacturing a prefabricated bearing platform 3. Specifically, carry out the flattening of prefabricated place earlier, place the bottom form, according to the design of reservation central groove 3.1, mounting hole 3.2, pile foundation cushion cap reinforcing bar 3.3 and reservation connecting reinforcement, 3 reinforcing bars of prefabricated cushion cap of ligature, then the installation template, concreting, after the concrete reaches design strength, demolish the template.

And fourthly, hoisting the prefabricated bearing platform 3, namely compacting and leveling the foundation at the bottom of the prefabricated bearing platform 3 to the designed elevation at the bottom of the prefabricated bearing platform 3, integrally hoisting the prefabricated bearing platform 3, enabling the center of each pile foundation 1 to correspond to the center of the mounting hole 3.2 of the prefabricated bearing platform 3 respectively, performing plug-in mounting connection, binding and welding reserved connecting steel bars at the top of the pile foundation 1 and in the mounting hole 3.2, and then pouring pile foundation and bearing platform connecting concrete.

And fifthly, hoisting the prefabricated pier 2. Roughening the inner side wall and the bottom wall of the central groove 3.1 and the bottom of the pier bearing platform 2.2 to form rough surfaces on the assembly surfaces of the prefabricated bearing platform 3 and the prefabricated pier 2; then, cleaning up dust in the central groove 3.1, pouring mortar with the thickness of 5cm into the central groove 3.1 for leveling, integrally hoisting the prefabricated pier 2 to enable the prefabricated pier 2 to be located in the central groove 3.1, binding the pier reinforcing steel bars 2.3 and pile foundation pile cap reinforcing steel bars 3.3, and pouring a pile foundation cap connecting concrete in the central groove 3.1 to finish construction.

The utility model discloses can fully avoid the attach fitting between pier and the cushion cap, its atress is clear and definite, and is whole firm, has improved the engineering quality.

It should be noted that in the description of the present invention, terms of orientation or positional relationship such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Claims

1. The utility model provides a prefabricated pier structure, includes that four equidistance arrange, central line are the pile foundation of square, its characterized in that: also comprises

2. The precast pier structure of claim 1, wherein: the degree of depth of central recess is 1/3 of prefabricated cushion cap height, and pier reinforcing bar and pile foundation cushion cap reinforcing bar are crisscross each other to be inserted when prefabricated cushion cap assembles with the pier cushion cap and are put, and has pour cushion cap connection concrete in central recess.

3. The precast pier structure of claim 1, wherein: the inner side wall and the bottom wall of the central groove are rough surfaces, and the contact surface between the bottom of the pier bearing platform and the central groove is a rough surface.

4. The precast pier structure of claim 1, wherein: and reserved connecting steel bars are arranged at the top of the pile foundation and on the inner sides of the mounting holes.

5. The precast pier structure of claim 4, wherein: and after the reserved connecting steel bars are bound, pile foundation and pile cap connecting concrete is poured in the mounting holes.