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Rectangular steel tube confined ultrahigh-strength concrete column and construction method thereof

A technology of ultra-high-strength concrete and rectangular steel pipes, which is applied in building reinforcements, processing of building materials, and structural elements. The effect of improving the carrying capacity

Pending Publication Date: 2022-02-01
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above problems limit the application and development of steel tube confined concrete columns

Method used

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  • Rectangular steel tube confined ultrahigh-strength concrete column and construction method thereof
  • Rectangular steel tube confined ultrahigh-strength concrete column and construction method thereof

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Experimental program
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Embodiment Construction

[0020] Such as Figure 1-2 As shown, a rectangular steel pipe-constrained ultra-high-strength concrete column of the present invention includes a steel pipe assembly 1, an ultra-high-strength concrete 2 and a longitudinal steel bar 3, and the steel pipe assembly 1 includes a rectangular steel pipe 12 and two rectangular steel sleeves 11, The outer contours of the two rectangular steel casings 11 match the inner contours of the rectangular steel pipes 12, and the two rectangular steel casings 11 are respectively sleeved inside the two ends of the rectangular steel pipes 12, and the longitudinal ends of the two rectangular steel casings corresponding to the two ends of protruding rectangular steel pipe 12;

[0021] The longitudinal end faces of the ultra-high strength concrete 2 are respectively flush with the end faces of the steel pipe assembly 1 .

[0022] The compressive strength of the ultra-high-strength concrete 2 is greater than or equal to 100 MPa and has no coarse agg...

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Abstract

The invention discloses a rectangular steel tube confined ultrahigh-strength concrete column and a construction method thereof. The rectangular steel tube confined ultrahigh-strength concrete column comprises a steel tube assembly, ultrahigh-strength concrete and longitudinal reinforcing steel bars, the steel tube assembly comprises a rectangular steel tube and two rectangular steel sleeves, and the outer contours of the two rectangular steel sleeves are matched with the inner contour of the rectangular steel tube; the two rectangular steel sleeves are connected into the two ends of the rectangular steel pipe in a sleeved mode respectively, and the longitudinal ends of the two rectangular steel sleeves correspondingly protrude out of the two ends of the rectangular steel pipe respectively. The ultrahigh-strength concrete and the longitudinal reinforcing steel bars are arranged in the steel pipe assembly, and the ultrahigh-strength concrete is attached to the inner wall of the steel pipe assembly. The bearing capacity of the structure can be effectively improved by adopting the ultrahigh-strength concrete, and the rectangular section has the characteristics of regular arrangement and simple and convenient node construction; the rectangular steel sleeve is additionally arranged at the column end, so that the compressive rigidity of the section of the column end can be improved, and the non-deformability is improved.

Description

technical field [0001] The invention relates to the field of concrete columns, in particular to a super-high-strength concrete column confined by rectangular steel pipes and a construction method thereof. Background technique [0002] Confined concrete columns with steel pipes have the characteristics of high bearing capacity and good seismic performance. They have been applied in housing construction projects and achieved good economic results. As engineering requirements increase, new challenges are posed to the load-bearing capacity of such structures. Filling steel pipes with ultra-high-strength concrete can effectively solve this problem, and the restraint effect of steel pipes can also increase the ductility of the structure, which has broad application prospects. [0003] However, at present, most of these structures are circular, which leads to complex structure of beam-column joints and great difficulty in design. In addition, in order to prevent the steel pipe fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/30E04B1/58E04C5/03E04G21/02E04G21/14
CPCE04B1/30E04B1/5831E04C5/03E04G21/02E04G21/14
Inventor 韦建刚张瀚文杨艳罗霞陈祥
Owner FUJIAN UNIV OF TECH
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