[1] Xia Jian, Zong Zhouhong, Xu Chaoran, et al. Seismic performance of double-skin steel-concrete composite boxpiers: Part Ⅱ—Nonlinear finite element analysis [J]. Journal of Southeast University (English Edition), 2016, 32 (3): 346-355. [doi:10.3969/j.issn.1003-7985.2016.03.015]

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Seismic performance of double-skin steel-concrete composite boxpiers: Part Ⅱ—Nonlinear finite element analysis()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

32

Issue:

2016 3

Page:

346-355

Research Field:

Traffic and Transportation Engineering

Publishing date:

2016-09-20

Info

Title:

Seismic performance of double-skin steel-concrete composite boxpiers: Part Ⅱ—Nonlinear finite element analysis

Author(s):

Xia Jian¹;  3;  Zong Zhouhong²;  Xu Chaoran²;  Li Minghong²

¹ School of Civil Engineering, Fuzhou University, Fuzhou 350116, China
² School of Civil Engineering, Southeast University, Nanjing 210096, China
³ Fujian Academy of Building Research, Fuzhou 350025, China

Keywords:

double-skin steel-concrete composite box(DSCB)pier;  finite element analysis;  local buckling;  hysteretic behavior;  skeleton curve model

PACS:

U443.22

DOI:

10.3969/j.issn.1003-7985.2016.03.015

Abstract:

An accurate finite element(FE)model was constructed to examine the hysteretic behavior of double-skin steel-concrete composite box(DSCB)piers for further understanding the seismic performance of DSCB piers; where the local buckling behavior of steel tubes, the confinement of the in-filled concrete and the interface action between steel tube and in-filled concrete were considered. The accuracy of the proposed FE model was verified by the bidirectional cyclic loading test results. Based on the validated FE model, the effects of some key parameters, such as section width to steel thickness ratio, slenderness ratio, aspect ratio and axial load ratio on the hysteretic behavior of DSCB piers were investigated. Finally, the skeleton curve model of DSCB piers was proposed. The numerical simulation results reveal that the peak strength and elastic stiffness decrease with the increase of the section width to steel thickness ratio. Moreover, the increase of the slenderness ratio may result in a significant reduction in the peak strength and elastic stiffness while the ultimate displacement increases. The proposed skeleton curve model can be taken as a reference for seismic performance analyses of the DSCB piers.

References:

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Memo

Memo:

Biographies: Xia Jian(1970—), male, doctor, professor; Zong Zhouhong(corresponding author), male, doctor, professor, zongzh@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 51678141, 51378112), the Open Fund from the National Engineering Laboratory for Technology of Geological Disaster Prevention in Land Transportation, Southwest Jiaotong University(No. SWJTU-GGS-2014001).
Citation: Xia Jian, Zong Zhouhong, Xu Chaoran, et al. Seismic performance of double-skin steel-concrete composite box piers: PartⅡ—Nonlinear finite element analysis[J].Journal of Southeast University(English Edition), 2016, 32(3):346-355.DOI:10.3969/j.issn.1003-7985.2016.03.015.

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