CN220013395U

CN220013395U - Pier column eccentric compression steel pipe column structure is exempted from to weak foundation section

Info

Publication number: CN220013395U
Application number: CN202321300273.9U
Authority: CN
Inventors: 陈星州; 强永林; 何立; 吴思凯; 谭冰心
Original assignee: SICHUAN ROAD AND BRIDGE HUADONG CONSTRUCTION CO Ltd
Current assignee: SICHUAN ROAD AND BRIDGE HUADONG CONSTRUCTION CO Ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-11-14
Anticipated expiration: 2033-05-26

Abstract

The utility model discloses a pier column-free eccentric compression steel pipe column structure of a soft foundation section; the structure comprises a pile expansion foundation, steel pipe columns, a distribution beam and steel pipe columns which are connected in parallel. The steel pipe column parallel connection consists of a cross frame, a steel pipe parallel connection and an embedded part. Pile foundation increases pile foundation bearing capacity, and steel pipe stand and distributing beam bear construction load, and the parallel connection guarantees the stability of steel pipe stand and prevents local unstability. The utility model has the following advantages: (1) The foundation is expanded, so that the bearing capacity of the foundation is increased, the construction quantity is reduced, and the construction period is shortened; (2) The damage of the permanent structure short column caused by eccentric compression can be effectively avoided, and the construction safety and reliability are high; (3) The parallel connection can ensure the stability of the steel pipe upright post, avoid local instability and improve the construction safety; (4) Based on the structural form, fewer upright posts are needed when the beam is cast in situ, so that the material loss can be reduced, and the construction cost is reduced.

Description

Pier column eccentric compression steel pipe column structure is exempted from to weak foundation section

Technical Field

The utility model relates to the field of box girder cast-in-situ construction, in particular to a pier column-free eccentric compression steel pipe column structure of a soft foundation section.

Background

In the case beam cast-in-situ construction, in order to overcome bad terrains and geology such as steep, surrounding rock weakness, etc., permanent structures such as pier columns are often utilized for cast-in-situ, but when each final span beam is poured, the pier columns cannot be symmetrically poured, so that the pier columns are eccentrically pressed during construction, the pier columns are not easy to be stressed, and even the pier columns are damaged.

The foundation bearing capacity is poor at the soft foundation section, the excavation workload can be greatly increased by adopting a foundation deepening mode in order to meet the foundation bearing capacity, and the defects of low construction efficiency, high material consumption and the like exist at the same time.

Disclosure of Invention

Therefore, in order to solve the defects, the utility model provides the pier column eccentric compression-free steel pipe column structure of the soft foundation section. Mainly solves the problems in the following aspects: (1) The support is provided for the bracket during construction, so that the temporary structural stability is ensured; (2) The pier column is prevented from being damaged due to tensile stress caused by eccentric compression, and the stability and safety of a permanent structure are ensured; (3) The pile foundation bearing capacity is increased by adopting the pedestal pile, so that the construction safety is ensured; (4) And a parallel connection is added between the steel pipe and the pier column, so that the stability of the steel pipe column is ensured, and local instability is prevented.

The utility model is realized in such a way, and constructs a soft foundation section pier-free eccentric compression steel pipe column structure, which is characterized in that; the structure comprises a pile expansion foundation, steel pipe columns, a distribution beam and steel pipe columns which are connected in parallel. The steel pipe column parallel connection consists of a cross frame, a steel pipe parallel connection and an embedded part. Pile foundation increases pile foundation bearing capacity, and steel pipe stand and distributing beam bear construction load, and the parallel connection guarantees the stability of steel pipe stand and prevents local unstability.

The pier column-free eccentric compression steel pipe column structure of the soft foundation section is characterized in that; and welding the stiffening plate and the top plate with the embedded part by the steel pipe column according to the design requirement.

The pier column-free eccentric compression steel pipe column structure of the soft foundation section is characterized in that; parallel construction of steel pipe columns; the channel steel of 32b is adopted to weld into the groined frame, and the groined frames are also connected by adopting the channel steel of 32 b.

The pier column-free eccentric compression steel pipe column structure of the soft foundation section is characterized in that; the steel pipes on two sides are welded and fixed by adopting two parallel steel pipes to connect the well frame and the steel pipe upright posts; the middle steel pipe is welded and fixed on the embedded part by adopting a parallel steel pipe.

The pier column-free eccentric compression steel pipe column structure of the soft foundation section is characterized in that; the distribution beam 3 is welded and fixed on the top plate of the upright post.

The utility model has the following advantages: (1) The foundation is expanded, so that the bearing capacity of the foundation is increased, the construction quantity is reduced, and the construction period is shortened; (2) The damage of the permanent structure short column caused by eccentric compression can be effectively avoided, and the construction safety and reliability are high; (3) The parallel connection can ensure the stability of the steel pipe upright post, avoid local instability and improve the construction safety; (4) Based on the structural form, fewer upright posts are needed when the beam is cast in situ, so that the material loss can be reduced, and the construction cost is reduced.

Drawings

FIG. 1 is a schematic overall construction;

FIG. 2 is a schematic illustration of a parallel configuration;

FIG. 3 is a schematic illustration of a construction flow;

FIGS. 4-5 are schematic views of pile top construction;

FIG. 6 is a schematic view of pile bottom construction;

fig. 7-8 are schematic views of pile bottom embedments.

Detailed Description

The following detailed description of the present utility model will provide clear and complete description of the technical solutions of embodiments of the present utility model, with reference to fig. 1-8, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a soft foundation section pier-free eccentric compression steel pipe column structure through improvement, which can be implemented in the following manner as shown in the figure; the structure mainly comprises a pile expansion foundation 1, steel pipe upright posts 2, a distribution beam 3 and steel pipe upright posts in parallel connection. The steel pipe column parallel connection consists of a cross frame 41, a steel pipe parallel connection 42 and an embedded part. Pile foundation 1 increases pile foundation bearing capacity, and steel pipe stand and distributing beam bear construction load, and the parallel connection guarantees the stability of steel pipe stand and prevents local unstability.

The utility model is implemented; the steel pipe column 2 is welded with the stiffening plate and the top plate according to the design requirement and is welded with the embedded part.

The utility model is implemented; and (5) steel pipe column parallel connection construction. The channel steel of 32b is adopted to weld the groined frame 41, and the groined frames are also connected by adopting the channel steel of 32 b.

The utility model is implemented; the steel pipe is welded and fixed by adopting two parallel steel pipes to connect the well frame and the steel pipe upright posts; the middle steel pipe is welded and fixed on the embedded part by adopting a parallel steel pipe.

The utility model is implemented; the distribution beam 3 is welded and fixed on the top plate of the upright post.

In summary, the structure of the patent is mainly composed of pile expanding foundations, steel pipe columns, distribution beams and steel pipe columns in parallel. The steel pipe column parallel connection consists of a cross frame, a steel pipe parallel connection and an embedded part. Pile foundation increases pile foundation bearing capacity, and steel pipe stand and distributing beam bear construction load, and the parallel connection guarantees the stability of steel pipe stand and prevents local unstability.

The construction flow is as follows:

(1) And (5) performing pedestal pile construction. And excavating a pedestal pile foundation, placing a reinforcement cage and an embedded part, and then pouring concrete.

(2) And (5) installing a steel pipe column. The steel pipe column is welded with the stiffening plate and the top plate according to the design requirement, and the steel pipe column is placed at the design position by using the crane to be welded with the embedded part.

(3) And (5) steel pipe column parallel connection construction. The channel steel of 32b is adopted to weld into the groined frame, and the groined frames are also connected by adopting the channel steel of 32 b. And 3 steel pipe columns are arranged in total, two steel pipes on two sides are connected with the well frame and the steel pipe columns by adopting two parallel steel pipes, and welded and fixed. The middle steel pipe is welded and fixed on the embedded part by adopting a parallel steel pipe.

(4) And (5) distributing beam construction. And welding and fixing the distribution beam on the top plate of the upright post by adopting a crane.

This patent has following advantage and beneficial effect:

(1) The foundation is expanded, so that the bearing capacity of the foundation is increased, the construction quantity is reduced, and the construction period is shortened;

(2) The damage of the permanent structure short column caused by eccentric compression can be effectively avoided, and the construction safety and reliability are high;

(3) The parallel connection can ensure the stability of the steel pipe upright post, avoid local instability and improve the construction safety;

(4) Based on the structural form, fewer upright posts are needed when the beam is cast in situ, so that the material loss can be reduced, and the construction cost is reduced.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pier column eccentric compression-free steel pipe column structure of a soft foundation section is characterized in that;

the structure is provided with a pile expansion foundation (1), steel pipe upright posts (2), a distribution beam (3) and steel pipe upright posts in parallel connection; the steel pipe column parallel connection consists of a cross frame (41), a steel pipe parallel connection (42) and an embedded part; welding the channel steel of 32b into a groined frame (41), and connecting the groined frames by adopting the channel steel of 32 b; 3 steel pipe columns (2) are arranged in total, and two steel pipes on two sides are connected with the cross frame and the steel pipe columns by adopting two parallel steel pipes for welding and fixing; the middle steel pipe is welded and fixed on the embedded part by adopting a parallel steel pipe; the distribution beam (3) is welded and fixed on the top plate of the upright post.

2. The pier stud-free eccentric compression steel pipe column structure of the soft foundation section according to claim 1, wherein the structure is characterized in that; and the steel pipe upright post (2) is welded with the stiffening plate and the top plate according to the design requirement and is welded with the embedded part.