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作者:

Liu, Hongtao (Liu, Hongtao.) | Wang, Zhenyu (Wang, Zhenyu.) | Xu, Chengshun (Xu, Chengshun.) (学者:许成顺) | Du, Xiuli (Du, Xiuli.) (学者:杜修力)

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Scopus SCIE

摘要:

Substantial attention has been paid to precast structures due to their obvious advantages. While precast members connected by grouted sleeves are used in seismic regions, studies on the seismic performance of precast column under large axial compression ratio are few, especially in underground structures. In this paper, three full-scale precast columns were designed and tested under axial compression ratios of 0.2, 0.5, and 0.85. Additionally, three monolithic cast-in-place columns with identical details served as a control. The main objectives of this study are to study the influence of the axial compression ratio on the global mechanical behavior of precast columns subjected to low-cyclic reversed horizontal loads, and to discover the internal force distribution and reach the appropriate axial compression ratio for precast columns. The test results are: (1) Precast columns were capable of matching the deformation and lateral strength of monolithic connections under the same compression ratio, while they were affected significantly by the axial compression ratio. (2) The plastic hinge location of precast columns shifted above the grouted sleeve region. It is found that good ductility can be exhibited compared with conventional cast-in-place column. (3) An effective measure to relieve uncoordinated stiffness along the height of the column was introduced. (4) Based on strength and deformation with the same axial compression ratio, the appropriate axial compression ratio was achieved for precast columns and the relationship of spliced-bar strain ratio and axial compression ratio was presented.

关键词:

Deformation capacity Axial compression ratio Spliced-bar strain ratio Precast column Failure mode

作者机构:

  • [ 1 ] [Liu, Hongtao]Beijing Univ Civil Engn & Architecture, Sch Civil & Transportat Engn, Beijing 100044, Peoples R China
  • [ 2 ] [Wang, Zhenyu]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 3 ] [Xu, Chengshun]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
  • [ 4 ] [Du, Xiuli]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

通讯作者信息:

  • 许成顺

    [Xu, Chengshun]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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来源 :

JOURNAL OF STRUCTURAL ENGINEERING

ISSN: 0733-9445

年份: 2021

期: 12

卷: 147

4 . 1 0 0

JCR@2022

ESI学科: ENGINEERING;

ESI高被引阀值:87

JCR分区:2

被引次数:

WoS核心集被引频次: 15

SCOPUS被引频次: 14

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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