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Fabricated stay bar prestressing sandwich pipe concrete combined member

A composite component and concrete technology, applied in the direction of building components, structural elements, building reinforcements, etc., can solve the problems of large wall thickness, high cost, and poor fire resistance of steel pipes, and achieve small thermal conductivity, large heat capacity, and improved The effect of strength and ductility

Inactive Publication Date: 2019-10-11
HARBIN INST OF TECH
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AI Technical Summary

Problems solved by technology

However, in order to prevent premature local buckling, the diameter-to-thickness ratio (or width-to-thickness ratio) limit of the steel pipe is small, so the wall thickness of the steel pipe is large and the cost is high; in addition, the steel column heats up quickly under fire, and its fire resistance is poor

Method used

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  • Fabricated stay bar prestressing sandwich pipe concrete combined member
  • Fabricated stay bar prestressing sandwich pipe concrete combined member
  • Fabricated stay bar prestressing sandwich pipe concrete combined member

Examples

Experimental program
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Embodiment Construction

[0015] refer to Figure 1-Figure 3 As shown, an assembled strut prestressed sandwich tubular concrete composite member of this embodiment includes a sandwich tubular concrete column 1, a prestressed cable 2, a strut 3, a cableway 4 and a cable head 5; a sandwich tubular concrete column 1 N pairs of struts 3 are fixedly connected to the two sides of each pair of struts 3, and each pair of struts 3 is symmetrically arranged and perpendicular to the sandwich concrete column 1, and the ends of the struts 3 are fixedly connected to the cableway 4; wherein, N≥1 is a positive integer;

[0016] The prestressed cable 2 is threaded in the cableway 4, and its two ends are respectively fixed on the cable head 5 installed at the two ends of the sandwich concrete column 1, and the axes of the strut 3, the cableway 4 and the sandwich concrete column 1 are located on the same plane Inside, the two prestressed cables 2 on both sides of the sandwich tube concrete column 1 are symmetrically arra...

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Abstract

A fabricated stay bar prestressing sandwich pipe concrete combined member comprises a sandwich pipe concrete column, prestressed cables, stay bars, cableways and cable heads. Each pair of stay bars issymmetrically arranged and is perpendicular to the sandwich pipe concrete column, and the ends of the stay bars are fixedly connected with the cableways. The prestressed cables penetrate into the cableways, and the two ends of each prestressed cable are fixedly connected to the cable heads mounted at the two ends of the sandwich pipe concrete column correspondingly. The axes of the stay bars, theaxes of the cableways and the axis of the sandwich pipe concrete column are located in the same plane. The two prestressed cables on the two sides of the sandwich pipe concrete column are symmetrically arranged in an inclined broken line manner. The fabricated stay bar prestressing sandwich pipe concrete combined member has the advantages of being high in bearing capacity, good in fire resistingperformance and fast to construct.

Description

technical field [0001] The invention relates to an assembled strut prestressed sandwich tube concrete composite member. Background technique [0002] The bracing and prestress in the strut-type prestressed column can provide lateral support points for the column, thereby reducing the calculated length of the column and greatly improving the stable bearing capacity of the column with a large slenderness ratio, so that the strength of the steel can be fully utilized. However, in order to prevent premature local buckling, the diameter-to-thickness ratio (or width-to-thickness ratio) limit of the steel pipe is small. Therefore, the wall thickness of the steel pipe is large and the cost is high. In addition, the steel column heats up quickly under fire and has poor fire resistance. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the invention provides an assembled strut prestressed sandwich tube-concrete composite member, which has the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/34E04C5/08
CPCE04C3/34E04C5/08
Inventor 刘发起白璐涵杨华
Owner HARBIN INST OF TECH
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