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作者:

Du, Xiuli (Du, Xiuli.) | Wang, Zhenyu (Wang, Zhenyu.) | Liu, Hongtao (Liu, Hongtao.)

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摘要:

Self-centering concrete wall system is becoming more and more popular in recent years due to its obvious advantages in reducing earthquake damage, small residual drift and being easy to repair. In this paper, three dimensional (3D) finite element (FE) models for a series of self-centering concrete walls are developed to predict the responses of such walls under lateral cyclic loading. The influences of five parameters including initial external pressure, equivalent pre-pressure, contribution ratio of axial load, aspect ratio of walls and prestressed tendons (PTs) location on the seismic performance of self-centering concrete walls are systematically investigated. Results show: (1) The initial stiffness, strength and energy dissipation capacity of the self-centering wall continue to increase with an increase of the axial load, but the pinching effect of the hysteresis curves is significantly weakened, which means the self-centering capacity is reduced, especially when the axial compression ratio increases to a certain degree and the self-centering capacity of the wall is basically lost; (2) The self-centering capacity and energy dissipation capacity are almost independent of the contribution ratio of two axial loads, when the total axial load remains unchanged; (3) Under the same conditions, the high wall has better self-centering capacity, and the low wall has better energy dissipation capacity, which is associated as different mechanical properties and failure modes under cyclic loading; (4) Increasing the distance S between the PT bar and the centerline of the wall is beneficial to improve the lateral stiffness, strength and energy dissipation capacity of wall panels, but causes a large residual drift and bad self-centering capacity simultaneously. In addition, the distribution of tendons when they remain unyielding has a negligible effect on self-centering behavior of the walls.

关键词:

Seismic performance Cyclic loading test Parametric studies Self-centering concrete wall FEM

作者机构:

  • [ 1 ] [Du, Xiuli]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Zhenyu]Beijing Univ Technol, Minist Educ, Key Lab Urban Secur & Disaster Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Zhenyu]Beijing Inst Residential Bldg Design & Res Co Ltd, Beijing 100005, Peoples R China
  • [ 4 ] [Liu, Hongtao]Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing 100044, Peoples R China

通讯作者信息:

  • [Liu, Hongtao]Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing 100044, Peoples R China

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来源 :

JOURNAL OF BUILDING ENGINEERING

ISSN: 2352-7102

年份: 2021

卷: 41

6 . 4 0 0

JCR@2022

JCR分区:1

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次:

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