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12 results on '"XIA Xiushen"'

1. Study on the Influence of Fatigue on the Shear Performance of Metal Rubber Bearing

Author

Qiao, Xin, Xia, Xiushen, Chan, Albert P. C., Series Editor, Hong, Wei-Chiang, Series Editor, Mellal, Mohamed Arezki, Series Editor, Narayanan, Ramadas, Series Editor, Nguyen, Quang Ngoc, Series Editor, Ong, Hwai Chyuan, Series Editor, Sachsenmeier, Peter, Series Editor, Sun, Zaicheng, Series Editor, Ullah, Sharif, Series Editor, Wu, Junwei, Series Editor, Zhang, Wei, Series Editor, A Rashid, Ahmad Safuan Bin, editor, Şahin, Sümer, editor, Makhmudov, Kh. F., editor, and Ismail, Mohamed A., editor

Published
2024
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2. The relationship between the seismic bending moment of pier bottom and the initial lifting bending moment of railway self-centering pier

Author

Zhu, Zhijie, Xia, Xiushen, Zhu, Haoran, Qiao, Xin, Zhang, Heng, Zhang, Xudong, Zheng, Zheng, Editor-in-Chief, Xi, Zhiyu, Associate Editor, Gong, Siqian, Series Editor, Hong, Wei-Chiang, Series Editor, Mellal, Mohamed Arezki, Series Editor, Narayanan, Ramadas, Series Editor, Nguyen, Quang Ngoc, Series Editor, Ong, Hwai Chyuan, Series Editor, Sun, Zaicheng, Series Editor, Ullah, Sharif, Series Editor, Wu, Junwei, Series Editor, Zhang, Baochang, Series Editor, Zhang, Wei, Series Editor, Zhu, Quanxin, Series Editor, Zheng, Wei, Series Editor, Xiang, Ping, editor, Yang, Haifeng, editor, Yan, Jianwei, editor, and Ding, Faxing, editor

Published
2024
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7. Effect of SMA Restrainer on Seismic Response of Railway Self-centering Pier.

Author

LUO Hui, XIA Xiushen, CHEN Qifan, LI Dawei, ZHANG Yongqiang, and MA Jianxing

Subjects
SEISMIC response, PIERS, BRIDGE foundations & piers, SHAPE memory alloys, GROUND motion, BENDING moment, SEISMOGRAMS
Abstract

In order to study the influence of shape memory alloy (SMA) on the seismic response of railway self-centering piers, the SMA restrainer element is added to the verified two-spring model. Taking a railway bridge pier as the engineering background, the numerical analysis model is established based on OpenSees platform. By inputting three strong earthquake records, the influence of SMA restrainer on the pier is analyzed by nonlinear time history analysis method. The influence of the initial clearance and the change of the initial prestress of the key parameters of the SMA restrainer device on the displacement of the pier top and the bending moment of the pier bottom is discussed, and compared with the prestressed reinforcement restrainer. The results show that under ordinary ground motion El-Centro and Taft waves, the displacement at the top of the self-centering pier decreases with the decrease of the initial gap δ of the restrainer device, and the bending moment at the bottom of the pier increases with the decrease of the initial gap δ. With the increase of the initial preload of the SMA restrainer, the displacement of the top of the self-centering pier decreases and the bending moment of the bottom of the pier increases. The influence of SMA restrainer on the seismic response of self-centering piers under near-fault ground motion Northridge is complex. Under three strong earthquake records, compared with the prestressed reinforcement restrainer, SMA restrainer will reduce the bending moment of the pier bottom and increase the horizontal displacement of the pier top. [ABSTRACT FROM AUTHOR]

Published
2024
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11. Rocking Isolation of Tall Pier with Pile Foundations Based on Double-Spring Model

Author

Chen Xingchong, Zhang Yongliang, Liu Zunwen, and Xia Xiushen

Subjects
Pier, Engineering, business.industry, Stiffness, Structural engineering, Vibration, Moment (mathematics), Spring (device), medicine, Geotechnical engineering, Restoring force, medicine.symptom, Pile, business
Abstract

A double-spring model for rocking isolation of tall piers with pile foundations, restoring force curve and the spring stiffness are proposed. Rocking isolation for bridges with tall piers are analyzed by using nonlinear time-history method, and the results are compared with those obtained by using concentrated rotational springs which are more simplified. The results show that the vibration period is not fixed after rocking and uplift of the pier, the anti-overturning moment is very close to the peak moment at the bottom of piers with the effect of rocking isolation is stable, and less affected by input ground motions. Displacement-time curve of the top of the pier and the moment at the pier bottom, obtained by using double-spring model is close to those obtained by using concentrated rotational-springs model, which are more simplified.

Published
2015

12. Effect of near-field ground motion on the rocking response of tall pier with pile foundations.

Author

XIA Xiushen and LI Jiangzhong

Abstract

To determine the scope of self-centering for the tall pier with pile foundations, the effect of near-field ground motion on rocking response was investigated. Fault distance was used as parameters identifying near-field to select ground motion. Two springs simulated the uplift and rocking of the pier. Rocking response of a railway tall pier was investigated through nonlinear time history analysis by inputting strong ground motions. The results show that the displacement at pier top is significantly increased by near-field horizontal ground motion. It is also observed that vertical ground motion is unfavorable to the rocking response of tall pier with pile foundations. Rocking devices for tall piers in near-fault zones should be cautious. [ABSTRACT FROM AUTHOR]

Published
2014

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