CN111719411A

CN111719411A - Prefabricated hollow upright column structure and forming method thereof

Info

Publication number: CN111719411A
Application number: CN202010520986.0A
Authority: CN
Inventors: 闫兴非; 周良; 张涛; 甘露; 张斌
Original assignee: Shanghai Urban Construction Design Research Institute Group Co Ltd
Current assignee: Shanghai Urban Construction Design Research Institute Group Co Ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-09-29

Abstract

The invention discloses a prefabricated hollow upright post structure and a forming method thereof, wherein the structure comprises a hollow upright post and a reinforcement cage, the reinforcement cage at least comprises vertical stressed reinforcements and vertical erection reinforcements, a hollow core section of the hollow upright post penetrates through the whole bridge pier, the vertical stressed reinforcements are arranged on the outer side of the hollow upright post, the vertical erection reinforcements are arranged on the inner side of the hollow upright post, and connecting pieces are arranged on the vertical stressed reinforcements; simultaneously placing the reinforcement cage and the positioning plate into the outer template of the upright post; the invention can realize the accurate positioning of the vertically stressed steel bars and the vertically erected steel bars, and can not be displaced greatly in the pouring process in time; the inner template of the upright post can be taken out by adopting a drawing method, so that the inner template of the upright post can be conveniently recycled.

Description

Prefabricated hollow upright column structure and forming method thereof

Technical Field

The invention relates to the technical field of municipal engineering construction, in particular to a prefabricated hollow upright post structure and a forming method thereof.

Background

In the bridge construction, adopt hollow prefabricated pier can alleviate prefabricated construction weight, have better application prospect.

However, when the hollow upright column is prefabricated, the problems that the inner side steel bar is difficult to position and the inner side formwork is difficult to demould are solved, and the special design of the bottom plate positioning steel bar and the inner film structure is usually needed.

The person skilled in the art is dedicated to solving the above technical drawbacks.

Disclosure of Invention

In view of the above defects of the prior art, the invention provides a prefabricated hollow upright column structure and a forming method thereof, and aims to reduce the difficulty of construction of a prefabricated central pier, improve the demolding efficiency of an inner side template, reduce the construction cost of the prefabricated hollow pier and promote the application of the prefabricated hollow pier in the construction of various bridges.

In order to achieve the technical purpose, the invention provides a prefabricated hollow upright post structure, which comprises a hollow upright post and a reinforcement cage; the reinforcement cage at least comprises vertical stressed reinforcements and vertical erection reinforcements; the hollow section of hollow stand runs through whole pier, vertical atress reinforcing bar is arranged in the outside of hollow stand, the inboard of hollow stand is arranged vertical reinforcing bar that erects, be provided with the connecting piece on the vertical atress reinforcing bar.

Preferably, the hollow upright post is of a concrete structure.

Preferably, the top or the bottom of the hollow upright post is a solid section.

Preferably, the connecting piece adopts a sleeve or a corrugated pipe.

The invention also provides a forming method of the prefabricated hollow upright post structure, which comprises the following steps:

the method comprises the following steps: binding vertical stressed steel bars and vertically erecting the steel bars to form a steel bar cage, and fixing the steel bar cage by using a positioning plate;

step two: simultaneously placing the reinforcement cage and the positioning plate into the outer template of the upright post;

step three: installing an upright post inner template in the reinforcement cage;

step four: pouring concrete into the outer column formwork and the inner column formwork to form a prefabricated hollow column;

step five: after the strength of the poured concrete reaches enough strength, the outer template of the upright post is dismantled;

step six: and finally, dismantling the positioning plate and dismantling the inner template of the upright post by a drawing method.

Preferably, the inner template of the upright post adopts a combined structure.

The invention has the beneficial effects that:

due to the structural design, the vertical stressed steel bars and the vertically erected steel bars can be accurately positioned, and the steel bars cannot be displaced greatly in the pouring process in time;

the inner template of the upright post can be taken out by adopting a drawing method, so that the inner template of the upright post can be conveniently recycled.

Drawings

FIG. 1 is a schematic elevational view of the present invention;

FIG. 2 is a schematic sectional elevation view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of a first step in the molding method of the present invention;

FIG. 5 is a schematic view of step two of the molding method of the present invention;

FIG. 6 is a schematic view of step three of the molding method of the present invention;

FIG. 7 is a schematic view of step four of the molding method of the present invention;

FIG. 8 is a schematic view of step five of the molding method of the present invention;

FIG. 9 is a schematic diagram of step six of the molding method of the present invention.

In the figure: the steel bar vertical type steel bar reinforced concrete column comprises a hollow upright column 1, vertical stressed steel bars 2, vertical erected steel bars 3, a steel bar cage 4, a positioning plate 5, an upright column outer formwork 6 and an upright column inner formwork 7.

Detailed Description

The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.

Example (b):

as shown in fig. 1-9, a prefabricated hollow column structure comprises a hollow column 1 and a reinforcement cage 4;

the reinforcement cage 4 at least comprises vertical stressed reinforcements 2 and vertical erection reinforcements 3;

the hollow core section of hollow stand 1 runs through whole pier, and vertical atress reinforcing bar 2 is arranged in the outside of hollow stand 1, and vertical reinforcing bar 3 that erects is arranged to the inboard of hollow stand 1, is provided with the connecting piece on the vertical atress reinforcing bar 2.

Specifically, the hollow upright column 1 is of a concrete structure.

Specifically, the top or the bottom of the hollow upright column 1 is a solid section, and the upright column inner template 7 can be taken out by adopting a drawing method as long as both ends are not sealed.

Specifically, the connecting piece adopts a sleeve or a corrugated pipe.

Specifically, vertical atress reinforcing bar 2 and vertical reinforcing bar 3 of erectting all need accurate location, ensure that hollow column 1 assembles precision and strict control concrete protective layer thickness.

A forming method of a prefabricated hollow upright post structure comprises the following steps:

the method comprises the following steps: binding the vertical stressed steel bars 2 and the vertical erection steel bars 3 to form a steel bar cage 4, and fixing the steel bar cage 4 by using a positioning plate 5;

step two: simultaneously placing the reinforcement cage 4 and the positioning plate 5 into the upright post outer template 6;

step three: an upright post inner template 7 is arranged in the reinforcement cage 4;

step four: concrete is poured into the upright post outer formwork 6 and the upright post inner formwork 7 to form a prefabricated hollow upright post 1;

step five: after the strength of the poured concrete reaches enough strength, the outer formwork 6 of the upright post is dismantled, and the prefabricated hollow upright post 1 is laid down;

step six: and finally, removing the positioning plate 5 and removing the inner template 7 of the upright post by a drawing method.

Specifically, the column inner formworks 7 adopt a combined structure, and the column inner formworks 7 can be disassembled into small blocks one by one.

Specifically, the on-site drawing equipment is strong enough, or the hollow upright column 1 is not high, and the upright column inner formwork 7 can be vertically drawn out without laying down the hollow upright column 1 during implementation.

The principle of the invention is as follows:

fixing the reinforcement cage 4 by using the positioning plate 5, and keeping the reinforcement cage 4 stable in the whole manufacturing process of the prefabricated hollow upright post 1; when the inner column formwork 7 is detached, the prefabricated hollow column 1 is laid down, so that the resistance between the inner column formwork 7 and the hollow column 1 can be overcome conveniently by a drawing method, and the inner column formwork 7 can be taken out.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a prefabricated hollow column structure which characterized in that: comprises a hollow upright post and a reinforcement cage;

the reinforcement cage at least comprises vertical stressed reinforcements and vertical erection reinforcements;

the hollow section of hollow stand runs through whole pier, vertical atress reinforcing bar is arranged in the outside of hollow stand, the inboard of hollow stand is arranged vertical reinforcing bar that erects, be provided with the connecting piece on the vertical atress reinforcing bar.

2. The prefabricated hollow column structure of claim 1, wherein: the hollow upright posts are of a concrete structure.

3. The prefabricated hollow column structure of claim 1, wherein: the top or the bottom of the hollow upright post is a solid section.

4. The prefabricated hollow column structure of claim 1, wherein: the connecting piece adopts a sleeve or a corrugated pipe.

5. A forming method of a prefabricated hollow upright column structure is characterized in that: the method comprises the following steps:

6. The method of forming a prefabricated hollow column structure according to claim 5, wherein: the inner template of the upright post adopts a combined structure.