CN101591944A - Sleeve type steel pipe concrete hollow square column - Google Patents

Abstract

The application discloses sleeve type steel pipe concrete hollow square column, it be in having the rectangular steel tube concrete of solid composite structure, be with one coaxial in pipe, do not have concrete in the interior pipe, form hollow compound structural.Good effect of the present invention is: (1) has further reduced the deadweight of pillar, has improved the strut stability of pillar; (2) pillar can doublely be done building penetration pipe or building internal drainage pipe.

Description

Sleeve type steel pipe concrete hollow square column

Technical field

The application relates to building structure.

Background technology:

Existing concrete filled steel tube square column is to water full concrete in rectangular steel tube, form the solid composite structure, it has utilized the high strength of steel pipe, come the side of confined concrete, effect is looked about in formation, improve the compressive strength of concrete column greatly, make the brittle fracture of structure become ductile failure, improved the safety of structure.It is compared with reinforced concrete post, and the pillar cross dimension can significantly be dwindled, thereby alleviates the deadweight of pillar, improves the usage space of building.But pillar can not be too elongated, to guarantee pressurized stability.When pillar is very high, just suitably overstriking, this has just increased dead load, need address this problem.

Summary of the invention

The design's purpose is the strut stability that guarantees square long column, alleviates the pillar deadweight simultaneously.Its scheme is that the concrete filled steel tube square column with solid composite structure is made hollow compound structural, and the core concrete that is about to the concrete filled steel tube square column removes, and with pipe (being called inner sleeve) replacement, forms hollowly, is named as sleeve type steel pipe concrete hollow square column.The structure of sleeve type steel pipe concrete hollow square column is divided into three layers, and skin is a square steel pipe, is called square outer tube, and internal layer is square tube or pipe, is called inner sleeve, and the intermediate layer is a concrete, in order to avoid vibration concrete is best.Square outer tube and inner sleeve are coaxial.That is to say that sleeve type steel pipe concrete hollow square column is exactly to water full concrete between coaxial inner and outer pipes, outer tube is a rectangular steel tube, and inner sleeve can be tubing such as steel pipe, PVC-U pipe, steel-plastics composite pipe.

Good effect of the present invention is:

(1) further reduces the deadweight of pillar, improved the strut stability of pillar;

(2) pillar can doublely be done building penetration pipe or building internal drainage pipe.

Description of drawings

Fig. 1 is the sleeve type steel pipe concrete hollow square column schematic diagram, among the figure: 1---and square outer tube; 2---exempt from vibration concrete; 3---inner sleeve.

The specific embodiment

As shown in Figure 1, inner sleeve 3 is inserted in the middle of the square outer tube 1 earlier, with the fixing inner sleeve 3 of rigid plastics clamp, make inner sleeve 3 and square outer tube 1 keep coaxial, lifting is holded up then, and fixation, vibration concrete 2 is exempted from cast between square outer tube 1 and inner sleeve 3 again, last maintenance makes hardening of concrete, sleeve type steel pipe concrete hollow square column.

Claims (1)

1, sleeve type steel pipe concrete hollow square column is characterized in that overlapping in the rectangular steel tube concrete coaxial interior pipe, and interior pipe is hollow.

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