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作者:

Du, Xiuli (Du, Xiuli.) (学者:杜修力) | Wang, Zhenyu (Wang, Zhenyu.) | Liu, Hongtao (Liu, Hongtao.) | Liu, Minmin (Liu, Minmin.)

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摘要:

A new precast self-centering concrete wall structure is presented, namely a set of slip-friction energy dissipating devices is installed at the wall toe. The opening and closing of the walls' corner joints under earthquakes drives slip-friction connectors to provide frictional energy dissipation capacities. In this paper, the influences of four parameters including bolt's slot length (SL), friction force, connection plate thickness and initial prestress force (f(p0)) of PT tendons on the seismic performance of the new precast self-centering concrete wall are systematically investigated. The results show that: 1) The bolt's SL has no effect on the initial stiffness and critical load of the wall, but the ultimate lateral-load capacity continues to decrease with the increase of SL. 2) The larger the friction force of the connectors, the worse the self-centering capacity, but the better the energy dissipation capacity of the specimen. 3) The connection plate thickness t has little effect on the self-centering capacity and energy dissipation capacity of wall. However, the wall's ultimate lateral-load capacity increases continuously with the increase of the plate thickness. 4) With the increase of f(p0), the self-centering capacity of specimen is significantly improved, but the energy dissipation capacity is reduced. It is necessary to reasonably control the initial prestress level of the PTs during design, which is very important to obtain the balance between the self-centering capacity and the energy dissipation capacity of the wall for the best behavior.

关键词:

Precast self-centering concrete wall Numerical analysis Dry slip-friction connectors Seismic performance

作者机构:

  • [ 1 ] [Du, Xiuli]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 2 ] [Wang, Zhenyu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Zhenyu]Beijing Inst Residential Bldg Design & Res Co Ltd, Beijing 100005, Peoples R China
  • [ 4 ] [Liu, Minmin]Beijing Inst Residential Bldg Design & Res Co Ltd, Beijing 100005, Peoples R China
  • [ 5 ] [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: 42

6 . 4 0 0

JCR@2022

JCR分区:1

被引次数:

WoS核心集被引频次: 15

SCOPUS被引频次: 24

ESI高被引论文在榜: 0 展开所有

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