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Method for improving anti-seismic property of RC Z-shaped cross section column frame node

A technology for seismic performance and column joints is applied in the field of high-strength stirrup-constrained polyvinyl alcohol fiber cement-based composite material reinforcement, which can solve the problems of limiting the total application height of special-shaped column structures, difficulty in concrete vibrating and compacting, serious earthquake damage, etc. Good crack dispersion ability, improve shear deformation and energy dissipation ability, delay the effect of main oblique crack

Inactive Publication Date: 2016-08-31
ZHEJIANG UNIV OF TECH
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Problems solved by technology

However, due to the dense reinforcement at the frame joints of the reinforced concrete special-shaped column frame, it is difficult to vibrate and compact the concrete, so that the joints of the special-shaped column structure are weaker than the joints of the rectangular column frame structure, and the earthquake damage is more serious, thus limiting the application of the special-shaped column structure total height

Method used

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  • Method for improving anti-seismic property of RC Z-shaped cross section column frame node
  • Method for improving anti-seismic property of RC Z-shaped cross section column frame node

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] refer to figure 1 with figure 2 , a method for improving the seismic performance of RC Z-shaped column frame joints, the Z-shaped column frame joints include Z-shaped columns 1 and frame beams 3, the junction of the Z-shaped columns 1 and frame beams 3 is the joint core area 2, in PAV-ECC materials are poured into the core area 2 of the Z-shaped column node and adjacent frame beams within a range of 1.1 times the beam height to form a composite area 5, and concrete is poured in the Z-shaped column 1 and the frame beams 3 connected on both sides, and the composite The distance between the area and the concrete area 4 poured in the frame beam is 1.1 times the beam height from the beam-column interface.

[0016] PVA-ECC reinforced concrete Z-shaped column frame joints reinforced with high-strength stirrups are used to connect reinforced concrete special-shaped c...

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Abstract

The invention provides a method for improving anti-seismic property of an RC Z-shaped cross section column frame node. The Z-shaped cross section column frame node includes a Z-shaped cross section column and a frame beam. The connection part of the Z-shaped cross section column frame node and the frame beam is a node core area. A composite area is formed by pouring PAV-ECC material in the Z-shaped cross section column node core area and a 1.1 time beam height range of the frame beam. Concrete is poured in the Z-shaped cross section column and the frame beam connected to the two sides. The division surface of the composite area and the concrete area in the frame beam is 1.1 time beam height distance away from the joint face of the column and the beam. The method can improve the anti-seismic property of the RC Z-shaped cross section column frame node effectively.

Description

technical field [0001] The invention belongs to the technical field of reinforced concrete building structures, and relates to a reinforcement method of high-strength hoop-bound polyvinyl alcohol fiber cement-based composite material (PVA-ECC) for improving the seismic performance of RC Z-shaped column frame joints. Background technique [0002] The cross-sectional geometric shape is T-shaped, L-shaped, Z-shaped and cross-shaped, and the column with a height-to-thickness ratio of the cross-section is not greater than 4 is called a special-shaped column. The structure composed of reinforced concrete special-shaped columns and beams is called reinforced concrete special-shaped column frame structure. In the special-shaped column frame structure, the rectangular column in the reinforced concrete frame structure is replaced by T-shaped, L-shaped, Z-shaped and cross-section columns. Usually, the corner column is L-shaped, the side column is T-shaped, and the middle column is cros...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/58E04B1/20E04H9/02
CPCE04B1/20E04B1/58E04H9/021E04H9/025Y02A30/30
Inventor 崔钦淑聂洪达许方才
Owner ZHEJIANG UNIV OF TECH
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