|Table of Contents|

Comparative study on shear capacity calculation method for shear walls with CFST columns(PDF)

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

Issue:
2023年04期
Page:
97-106
Research Field:
建筑结构
Publishing date:

Info

Title:
Comparative study on shear capacity calculation method for shear walls with CFST columns
Author(s):
ZHU Qian;  JIA Xinyu;  LIU Jinye;  NI Zhaoyang;  ZHAO Junhai
(School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China)
Keywords:
shear wall;  CFST column;  shear capacity;  softened strut-and-tie model;  unified strength theory
PACS:
TU398.2
DOI:
10.19815/j.jace.2022.04045
Abstract:
In order to study the applicability of different mechanical models in calculating the shear capacity of shear walls with concrete-filled steel tubular(CFST)columns, the empirical formulas and theoretical models deduced by domestic and foreign scholars were summarized. Various calculation methods were established based on the softened strut-and-tie model, unified strength theory and building codes at home and abroad. Then the performance of theoretical models and relevant building codes in predicting the shear capacity of such composite walls were compared and analyzed. Parametric studies were carried out to investigate the effects of axial compression ratio, aspect ratio, width thickness ratio and material properties on the calculation results. Finally, the accuracy and applicability of various mechanical models were validated by comparing with experimental data. The results show that the design methods of most standard models are generally lower than the experimental values, while the unified strength theory and the softened strut-and-tie model are relatively accurate. Meanwhile, the proposed formulas with softened strut-and-tie model not only can fully consider the contribution of each wall component, but also the calculation error is basically controlled within 20%. Moreover, under the premise of changing individual parameter, the calculated values by the softened strut-and-tie model are in good agreement with the test data. The analysis results can reasonably describe the shear mechanism and provide a theoretical basis for the optimum design of shear walls with CFST columns.

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Last Update: 2023-07-01