|Table of Contents|

Research on inter-story mechanical behavior of cold-formed steel “frame-wall” composite structure wall(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2024年04期
Page:
31-41
Research Field:
建筑结构
Publishing date:

Info

Title:
Research on inter-story mechanical behavior of cold-formed steel “frame-wall” composite structure wall
Author(s):
WANG Yunzhe;  ZHOU Tianhua;  WU Hanheng;  SUI Lu;  WANG Jiqin;  WANG Shuaibing
(School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)
Keywords:
cold-formed steel frame wall;  double-story wall;  pseudo-static test;  mechanical behavior of inter-story;  numerical analysis
PACS:
TU392.5
DOI:
10.19815/j.jace.2022.08011
Abstract:
A new type of cold-formed steel “frame-wall” composite structure was proposed, and pseudo-static tests were carried out on two full-scale wall specimens with different layers. According to the performance indexes such as failure mode, hysteretic curve, skeleton curve and displacement ductility coefficient, compared with single-story wall, the mechanical performance of inter-story of double-story wall was mainly investigated. In addition, based on ABAQUS finite element analysis software, the hysteresis performance of the double-story wall was simulated, and the yield strength of the inter-story edge beam, the spacing of the inter-story pullout bolts and the aspect ratio were analyzed. The results show that the bolt connection of double-story wall's inter-story has no obvious slip and pull-up, and has semi-rigid characteristics. According to the displacement meter measurement, the inter-story displacement tends to 0. Compared with the single-story specimen, after considering the connection of inter-story, the ductility and shear capacity of the double-story specimen decrease by 1.84% and 8.33% respectively, indicating that the force transfer of inter-story and the integrality of the walls performs well. The yield strength of the inter-story edge beam and the spacing of the inter-story pullout bolts have little effect on the shear capacity and lateral stiffness of the wall, while the aspect ratio has a great influence on the lateral stiffness and shear capacity of the double-story wall. The research findings can provide a reference for the design of multi-story cold-formed steel residence.

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Last Update: 2024-07-20