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A kind of gfrp pipe-concrete-steel composite column foot joint and construction method thereof

A composite column and concrete technology, applied in the fields of FRP, steel composite structure, and concrete, to achieve the effect of improving strength

Active Publication Date: 2020-05-26
ZHEJIANG UNIV CITY COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there is still no connection between GFRP tube-concrete-steel composite columns and reinforced concrete cap beams and pile bents (or foundations) at home and abroad.

Method used

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  • A kind of gfrp pipe-concrete-steel composite column foot joint and construction method thereof
  • A kind of gfrp pipe-concrete-steel composite column foot joint and construction method thereof
  • A kind of gfrp pipe-concrete-steel composite column foot joint and construction method thereof

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Embodiment Construction

[0038]The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] Such as Figure 1-6 As shown, a GFRP pipe-concrete-section steel composite column foot node provided by the present invention includes GFRP pipe 1, round steel pipe cross T-shaped composite section steel 2, self-compacting concrete 3 and box girder 8;

[0040] The round steel pipe cross T-shaped combined section steel 2 is nested in the middle of the GFRP pipe 1, and its lower end has a protruding section relative to the GFRP pipe 1; the GFRP pipe 1 has a grouting hole and a grouting hole, and is respectively set inside The grouting pipe 5 connected with the grouting hole, and the grouting pipe 6 connected with the grouting hole; the self-compacting concrete 3 is poured between the round steel pipe cross T-shaped steel 2 and the GFRP pipe 1 to form a prefabricated GFRP pipe-concrete - shaped steel composite column, inserted into the foundation ca...

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Abstract

The invention discloses a GFRP pipe-concrete-structural steel combination column base joint and a construction method thereof. The joint comprises a GFRP pipe, round steel pipe crossed T-shaped combination structural steel, self-compaction concrete and a box beam; the structural steel is nested into the GFRP pipe, and the lower end of the structural steel is provided with a stretching-out sectionrelative to the GFRP pipe; self-compaction concrete is poured between the structural steel and the GFRP pipe; the lower end of the structural steel is welded to the box beam, and a shearing force nailis welded to the stretching-out section; at the section above the box beam and below the surface of a foundation bearing table, the outer surface of the GFRP pipe-concrete-structural steel combination column is wrapped with two outer sleeve semi-round steel pipes; by adopting the outer sleeve steel pipe mode, shearing force nails are welded to the inner sides of the outer sleeve steel pipes, thestrength of column bottom concrete is improved, and axial force and bending torque of the column can be effectively transmitted to a foundation. By adopting the column foot node mode, axial force canbe transmitted, the large upsetting moment can be resisted, and the requirement for stress, deformation and earthquake resistance of the GFRP pipe-concrete-structural steel combination column can be met.

Description

technical field [0001] The invention belongs to the field of FRP, concrete and steel combined structures, and in particular relates to a GFRP pipe-concrete-shaped steel combined column base node and a construction method thereof. Background technique [0002] Bridge piers are the most basic and important load-bearing components of bridge structures. During several destructive earthquakes at home and abroad in recent years, such as the 1989 Loma Prieta earthquake, the 1994 Northridge earthquake, the 1995 Kobe earthquake, and the 1999 Taiwan China earthquake, Collecting earthquakes, Wenchuan Earthquake in 2008, Yushu Earthquake in 2010 and Ya'an Earthquake in 2013, a large number of reinforced concrete bridges were damaged due to defects in bridge piers, which caused a large number of casualties and huge economic losses. More importantly, the road as a life supply line was cut off due to the destruction of the bridge, which greatly affected the rescue work. In the Wenchuan ea...

Claims

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Application Information

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IPC IPC(8): E01D19/02E01D21/00
CPCE01D19/02E01D21/00
Inventor 邢丽曹庆帅张茹郑悦
Owner ZHEJIANG UNIV CITY COLLEGE
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