CN201347603Y - Hollow concrete-filled tubular column - Google Patents

Abstract

The utility model discloses a hollow concrete-filled tubular column. An inner pipe is sleeved in a concrete-filled steel tube with a solid composite structure, so as to form a hollow composite structure. The hollow concrete-filled tubular column has the beneficial effects that firstly, the encircling fixation effect of the steel tube and the inner pipe sleeved therein remarkably improves the compressive strength of the concrete; secondly, the dead weight of the column is further reduced, and the stability of the compression bar of the column is improved; and thirdly, the column can also serves as a construction-used sleeve or a construction-used inner drainpipe.

Description

Hollow steel pipe concrete column

Technical field

The application relates to building structure.

Background technology:

Existing steel core concrete column is to water full concrete in steel pipe, 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 section can significantly dwindle, 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 long column, alleviates the pillar deadweight simultaneously.Its scheme is that the steel core concrete column with solid composite structure is made hollow compound structural, and the core concrete that is about to steel core concrete column removes, with pipe (being called interior pipe) replacement, form hollow, hollow steel pipe concrete column.The layer structure of hollow steel pipe concrete column is a steel pipe, is called outer tube, and it is coaxial with interior pipe.That is to say that hollow steel pipe concrete column is exactly to water full concrete (preferably exempting from vibration concrete) between coaxial inner and outer pipes, outer tube is a steel pipe, and interior pipe can be pipelines such as steel pipe, PVC-U pipe, steel-plastics composite pipe.

Good effect of the present utility model is:

(1) by the effect of looking about of outer tube and interior pipe, obviously improved concrete compressive strength;

(2) further reduce the deadweight of pillar, improved the strut stability of pillar;

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

Description of drawings

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

The specific embodiment

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

Claims (1)

1, hollow steel pipe concrete column is characterized in that overlapping in the concrete filled steel tube pipe, forms hollow compound structural.

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