Seismic strengthening method for frame beam-column joint core area

A technology for beam-column joints and core areas, which is applied in earthquake resistance, building maintenance, building components, etc., can solve the problems of weak seismic performance, easy leakage binding, destructive damage, etc., and achieves simple construction, avoids construction difficulties, and is easy to operate. Effect

Inactive Publication Date: 2016-02-03
CHINA MCC17 GRP
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  • Abstract
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Problems solved by technology

[0002] At present, due to the relatively conservative structural design in my country, the steel bars in the core area of ​​the frame beam and column joints are too dense, and it is difficult to bind the steel bars. Considering the avoidance between the steel bars, it is difficult to guarantee the spacing, quantity and binding quality of the stirrups. In addition, the quality awareness of the operators Thin, if the quality of the hoop binding in this area is not strictly monitored, it is easy to miss the binding
The core area of ​​the frame joints is the internal force transmission node of beams and columns, and the seismic performance is weak. When an earthquake occurs, if the anti-seismic structural measures in this area are not in place, it is very easy to cause devastating damage.

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Embodiment Construction

[0014] In order to further describe the present invention, it is further described below in conjunction with embodiment.

[0015] Such as figure 1 As shown, a method for seismic strengthening of the core area of ​​a frame beam-column joint includes the following steps:

[0016] S1. Prefabrication of the overall stirrup cover 1: select four steel bar heads 2 of equal length as the skeleton, set several square stirrup cover 1s equidistantly around the outer circumference of the four steel bar heads 2, and place the four steel bar heads 2 Reserve 10cm at both ends, and fix the steel bar head 2 with the inner four corners of the stirrup cover 1 by spot welding. When making the stirrup cover 1, the bending angle of the hook of the stirrup cover 1 is 135°, and the hook The length is the larger of 10d and 75mm, and d is the diameter of the reinforcing bar for making the stirrup cover 1. When spot welding the inner four corners of the steel bar head 2 and the stirrup cover 1, the st...

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Abstract

The invention discloses a seismic strengthening method for a frame beam-column joint core area. The method comprises the following steps that firstly, an integrated stirrup sleeve is prefabricated; secondly, main column ribs, beam bottom column stirrups and beam lower portion longitudinal ribs are installed; thirdly, the integrated stirrup sleeve is installed; fourthly, beam upper portion longitudinal ribs and waist ribs are installed. By means of the method, the integrated stirrup sleeve is prefabricated first and then integrally installed on site, and thus compared with an existing method, the method has the advantages that construction is easy, and operation is convenient; the requirement for seismic performance and construction quality in the frame beam-column joint core area can be effectively met, and the quality problem brought by the construction difficulty of the traditional binding technology can be effectively solved.

Description

technical field [0001] The invention relates to the field of frame beam-column construction in construction engineering, in particular to an anti-seismic reinforcement method for the core area of ​​a frame beam-column node. Background technique [0002] At present, due to the relatively conservative structural design in my country, the steel bars in the core area of ​​the frame beam and column joints are too dense, and it is difficult to bind the steel bars. Considering the avoidance between the steel bars, it is difficult to guarantee the spacing, quantity and binding quality of the stirrups. In addition, the quality awareness of the operators If the quality of the hoop binding in this area is not strictly monitored, it is easy to miss the binding. The core area of ​​the frame joints is the internal force transmission node of beams and columns, and the seismic performance is weak. When an earthquake occurs, if the anti-seismic structural measures in this area are not in plac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/58E04G23/02E04B1/98
Inventor 赵东东
Owner CHINA MCC17 GRP
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