Development and experimental study on cable-sliding friction aseismic bearing

被引：0
作者：
Yuan W.-C. [1 ]
Cao X.-J. [1 ]
Rong Z.-J. [2 ]
机构：
[1] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University
[2] Jiangsu Wanbao Bridge Accessories Co. Ltd.
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2010年 / 31卷 / 12期
关键词：
Bridge; Cable-sliding friction aseismic bearing; Displacement limitation; Girder falling; Pot bearing;
D O I：
10.3969/j.issn.1006-7043.2010.12.006
中图分类号：
学科分类号：
摘要：
A new aseismic bearing-cable-sliding friction aseismic bearing was developed. The polytetrafluoroethylene (PTFE) plate was used as a sliding friction device and the cable was used for limiting the displacement as well as providing a restoration force. Furthermore, the design parameters for the bearing were discussed. The friction coefficient between the stainless steel plate and PTFE plate along with hysteretic behavior under various vertical loads were tested by pseudo-static experiments, and the necessary parameters for creating a theoretical model of the bearing were obtained. The effectiveness of the bearing and the reasonable value of cable stiffness were analyzed in the presented example, which is a four-span continuous girder bridge. The result shows that the cable-sliding friction aseismic bearing can decrease the earthquake force of the fixed pier significantly. Moreover, the cable can limit the displacement efficiently and prevent the girder from falling.
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页码：1593 / 1600
页数：7
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