Reinforcement method and structure for improving post-installed anchorage shear bearing capacity of concrete beam

A technology for concrete beams and reinforcement structures, applied in truss-type structures, joists, girders, etc., can solve the problems of low shear bearing capacity and limited concrete strength, improve shear bearing capacity, increase construction flexibility, Avoid wedge-shaped shear damage

Inactive Publication Date: 2017-01-25
TIANJIN ARCHITECTURE DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The shear bearing capacity is low, limited by the size of the original structural concrete beam secti

Method used

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  • Reinforcement method and structure for improving post-installed anchorage shear bearing capacity of concrete beam
  • Reinforcement method and structure for improving post-installed anchorage shear bearing capacity of concrete beam
  • Reinforcement method and structure for improving post-installed anchorage shear bearing capacity of concrete beam

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Example Embodiment

[0030] Hereinafter, the present invention will be described in detail with reference to the drawings and embodiments:

[0031] Such as Figure 1~3 As shown, a reinforcement method for improving the shear bearing capacity of a concrete beam after anchoring includes the following steps:

[0032] I Connect and fix the rear anchored steel beam 2 with the concrete beam 1;

[0033] II Make installation holes at the position of floor 3 on both sides of concrete beam 1;

[0034] III Pass the screw 4 through the installation hole of the floor 3;

[0035] IV Paste steel plate 5 on the bottom of concrete beam 1;

[0036] V Fix the steel plate 5 and the concrete beam 1 with chemical anchors 6

[0037] VI Connect the U-shaped hoop plate 7 to the concrete beam 1 from the lower part of the concrete beam 1;

[0038] VII Weld the screw 4 with the top hoop plate 8 and the U-shaped hoop plate 7 on the top of the floor 3;

[0039] VIII Weld and fix the U-shaped hoop plate 7 with the steel plate 5 at the botto...

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Abstract

The invention discloses a reinforcement method and a structure for improving the post-anchor shear bearing capacity of concrete beams, comprising the following steps: connecting and fixing post-anchor steel beams with concrete beams; making installation holes at floor positions on both sides of the concrete beams; The screw goes through the installation hole of the floor; the steel plate is attached to the bottom of the concrete beam; the steel plate and the concrete beam are fixed by chemical anchor bolts; the U-shaped hoop plate is sleeved on the concrete beam from the lower part of the concrete beam; the screw is connected to the top hoop set on the top of the floor The two sides of the plate and the U-shaped hoop plate are welded; the U-shaped hoop plate and the steel plate at the bottom of the concrete beam are welded and fixed at the bottom of the concrete beam; the invention improves the shear bearing capacity at the anchorage position of the concrete beam and is no longer limited The cross-sectional size and concrete strength of the original structure concrete beams; increase the construction flexibility, avoid the wedge-shaped shear damage of the concrete edge, and effectively avoid the wedge-shaped shear damage of the concrete edge.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a reinforcement method for improving the post-anchored shear bearing capacity of concrete beams. Background technique [0002] Post-anchoring technology is the anchoring of existing concrete structures through related technical means, such as anchor bolt self-locking or chemical bonding. Due to its advantages of convenient construction and flexible layout, post-anchor technology is more and more widely used in house reinforcement and reconstruction. The factors affecting the post-anchored shear bearing capacity mainly include anchor bolt strength, anchorage depth, concrete substrate strength, anchor bolt quantity and arrangement, etc. The shear failure modes of anchor bolts mainly include steel shear failure and concrete failure, wedge-shaped shear failure of concrete edge and concrete shear pry failure. Due to the limited height of the concrete beam and the ...

Claims

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Application Information

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IPC IPC(8): E04G23/02E04C3/20
CPCE04G23/0218E04C3/20
Inventor 朱旭东黄兆纬刘振文赵宇欣胡雪瀛黄信刘涛
Owner TIANJIN ARCHITECTURE DESIGN INST
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