CN203284970U

CN203284970U - Bamboo-plastic composite pipe concrete hollow coupled column

Info

Publication number: CN203284970U
Application number: CN2013202941941U
Authority: CN
Inventors: 梁炯丰; 易萍华; 肖烨; 胡鹏; 邵伟星; 谢胜军
Original assignee: East China Institute of Technology
Current assignee: East China Institute of Technology
Priority date: 2013-05-27
Filing date: 2013-05-27
Publication date: 2013-11-13
Anticipated expiration: 2023-05-27

Abstract

The utility model relates to a bamboo-plastic composite pipe concrete hollow coupled column. An outer bamboo-plastic composite pipe and an inner steel pipe are concentrically arranged. A concrete layer is filled between the outer bamboo-plastic composite pipe and the inner steel pipe. A hollow cavity is formed in the inner steel pipe. The inner steel pipe is a round steel pipe or square steel pipe or rectangular steel pipe. The utility model provides a bamboo-plastic composite pipe/concrete/steel pipe coupled column which can be used in a pier in civil engineering, a major-diameter column in high-rise buildings, an ocean platform support column and severe environment. According to the utility model, carrying capacity and anti-seismic property of the structure can be raised, dead load is reduced, and flexural rigidity of the structure is raised. The bamboo-plastic composite pipe concrete hollow coupled column has outstanding characteristics of convenient construction, low costs and the like. In addition, the bamboo-plastic composite pipe concrete hollow coupled column has advantages of good corrosion resistance, durability and the like in severe environments such as ocean, wet places, saline soils, saline-alkali soils and the like.

Description

A kind of bamboo-plastic combined pipe concrete hollow combination post

Technical field

The utility model relates to a kind of coupled column, particularly a kind of bamboo-plastic combined pipe concrete hollow combination post.

Background technology

Steel core concrete column refers to fill concrete in steel pipe and the member that forms, because it has that supporting capacity is high, plasticity and the advantages such as good toughness, easy construction and good endurance, therefore be widely used in heavy duty, large-span structure, in Practical Project, the principal mode of steel core concrete column is the load-bearing pillar of solid section, and it is often used as axis compression member or the less bending component of load eccentricity.But when larger, its bearing capacity will be controlled by its bending rigidity to a great extent when member slenderness ratio or load eccentricity, and this moment, how many bending rigidities solid steel pipe concrete cross section can not provide near the material at centre of form position, but had increased the deadweight of member; And steel pipe need to coat rust protection agent to strengthen the application life of structure, makes cost increase to some extent.

The utility model content

The utility model is for avoiding the existing weak point of above-mentioned prior art, and the bamboo-plastic combined pipe concrete hollow combination post under a kind of bridge pier, the major diameter post in highrise building and ocean platform stent strut and adverse circumstances that can be used in civil engineering is provided.

In order to achieve the above object, the utility model is achieved by the following technical solutions.

A kind of bamboo-plastic combined pipe concrete hollow combination post, outer bamboo-plastic combined pipe is placed with interior steel pipe is concentric, forms hollow cavity in fill concrete layer between outer bamboo-plastic combined pipe and interior steel pipe, described interior steel pipe.

Described interior steel pipe is round steel pipe or rectangular steel tube or rectangular steel pipe.

The utility model beneficial effect is: 1, mechanical property effectively improves.Under the common constraint of bamboo-plastic combined pipe and interior steel pipe outside, the stress performance of concrete material be improved significantly, simultaneously concrete has also improved the strength and stiffness of bamboo-plastic combined pipe widely, prevents steel pipe generation flexing, and carry out in cross section, bending rigidity large, good from heavy and light, anti-seismic performance.

2, easy construction.Bamboo-plastic combined pipe and steel pipe itself are exactly the template of anti-side pressure, when placing of concrete, can save the construction of template, and can adapt to advanced pump filling concrete technology, therefore, the utility model combining structure, can simplify installation technology, reduce construction land tenure and reduction of erection time.

3, Corrosion Protection is good.Bamboo-plastic combined pipe has good corrosion resistant ability, and it is through suitable pretreating process, more than being a century application life, and therefore particularly suitable under the adverse circumstances such as ocean, humidity, salt lick and salt-soda soil.

Description of drawings

The hollow earth pillar of circular bamboo-plastic combined pipe box round steel pipe coagulation shown in Figure 1.

The hollow earth pillar of circular bamboo-plastic combined pipe box rectangular steel pipe coagulation shown in Figure 2.

The hollow earth pillar of circular bamboo-plastic combined pipe box rectangular steel tube coagulation shown in Figure 3.

The specific embodiment

A kind of bamboo-plastic combined pipe concrete hollow combination post as Figure 1-3, outer bamboo-plastic combined pipe 1 and the concentric placement of interior steel pipe 3, fill concrete layer 2 between outer bamboo-plastic combined pipe 1 and interior steel pipe 3, the interior formation hollow cavity 4 of described interior steel pipe 3.

Described interior steel pipe 3 is round steel pipe or rectangular steel tube or rectangular steel pipe.

First with outer bamboo-plastic combined pipe and interior penstock installation in place after, guarantee that the geometric centroid of outer bamboo-plastic combined pipe and interior steel tube section overlaps, placing of concrete in two-layer pipe clamp layer then, middle part is hollow.

In concrete enforcement, the section form of combining structure is with any combination between the outer bamboo-plastic combined pipe of circle and circle, rectangle or square interior steel pipe, not only can improve supporting capacity and the anti-seismic performance of structure, reduce dead load and improve the bending rigidity of structure, have easy construction, the outstanding feature such as cheap; And have advantages such as good corrosion-resistant and durability under the adverse circumstances such as ocean, humidity, salt lick and salt-soda soil.

Claims

1. bamboo-plastic combined pipe concrete hollow combination post, it is characterized in that: outer bamboo-plastic combined pipe (1) and the concentric placement of interior steel pipe (3), form hollow cavity (4) in fill concrete layer (2) between outer bamboo-plastic combined pipe (1) and interior steel pipe (3), described interior steel pipe (3).

2. a kind of bamboo-plastic combined pipe concrete hollow combination post as claimed in claim 1, it is characterized in that: interior steel pipe (3) is round steel pipe or rectangular steel tube or rectangular steel pipe.