Prefabricated Prestressed Steel Tube Concrete Column and Its Construction Method

A technology of steel pipe concrete columns and construction methods, applied in the direction of columns, pillars, pier columns, etc., to achieve the effect of improving compressive strength, simple structure, and realizing assembly construction

Inactive Publication Date: 2021-07-02
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of the initial restraint of steel pipes on the internal concrete and to realize prefabricated construction, the invention discloses a prefabricated prestressed steel pipe concrete column and a construction method, which have the advantages of good mechanical performance and convenient construction.

Method used

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  • Prefabricated Prestressed Steel Tube Concrete Column and Its Construction Method
  • Prefabricated Prestressed Steel Tube Concrete Column and Its Construction Method
  • Prefabricated Prestressed Steel Tube Concrete Column and Its Construction Method

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Embodiment Construction

[0018] Such as Figure 1-2 As shown, a prefabricated prestressed steel pipe concrete column is composed of outer steel pipe (1), upper steel pipe (2), lower steel pipe (3) and concrete (4); outer steel pipe (1), upper steel pipe (2) and lower The steel pipes (3) are all round steel pipes, the axes of the outer steel pipe (1), the upper steel pipe (2) and the lower steel pipe (3) coincide; the upper steel pipe (2) is located on the top of the outer steel pipe (1), and one end extends out of the outer steel pipe (1 ), the length protruding out of the outer steel pipe (1) is not less than half of the inner diameter of the outer steel pipe (1), the length of the upper steel pipe (2) extending into the outer steel pipe (1) is equal to the protruding length; the lower steel pipe (3) is located in the outer steel pipe (1) ), does not protrude from the outer steel pipe (1), the inner diameter of the lower steel pipe (3) is equal to the outer diameter of the upper steel pipe (2), and t...

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Abstract

A prefabricated prestressed concrete-filled steel tubular column and a construction method. It consists of an outer steel pipe, an upper steel pipe, a lower steel pipe and concrete; the outer steel pipe, the upper steel pipe and the lower steel pipe are all round steel pipes; the upper steel pipe is located at the upper part of the outer steel pipe, and one end extends out of the outer steel pipe; Steel pipes; the outer and upper steel pipes are filled with concrete, and the lower steel pipes have no concrete. During construction, the side surfaces of the concrete formed column are chiseled, the top and bottom surfaces are ground flat, the outer steel pipe is heated, and the outer steel pipe is sleeved on the concrete formed column. The invention can solve the constraint problem of the steel tube on the concrete in the initial stage of loading, improve the mechanical performance of the concrete-filled steel tube column in the use stage, and realize assembly construction.

Description

technical field [0001] The invention relates to the field of prefabricated steel pipe concrete columns in assembled composite structures. Background technique [0002] The concrete-filled steel tube column has good mechanical performance. The concrete is restrained by the outer steel tube, and the compressive strength is improved. The outer steel tube is not prone to buckling failure under the support of the inner concrete. However, the restraint of the outer steel pipe on the inner concrete is passive. At the initial stage of loading, the Poisson's ratio of the steel is greater than that of the concrete, and the steel pipe has no restraint on the concrete. When the Poisson's ratio of the concrete is greater than the Poisson's ratio of the steel, The lateral deformation of concrete is greater than that of steel pipes. Concrete is restrained laterally by steel pipes. Concrete is in a three-dimensional compression state, and its strength is increased. Therefore, this restraint...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04C3/34E04C5/08
CPCE04C3/34E04C5/08
Inventor 丛术平张征韩金生
Owner SHANDONG UNIV OF SCI & TECH
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