| 跨断层桥梁抗震若干问题探讨 |
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| 引用本文： | 惠迎新,台玉吉,王克海,张尚荣.跨断层桥梁抗震若干问题探讨[J].西北地震学报,2017,39(5):870-875,889. |
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| 作者姓名： | 惠迎新 台玉吉 王克海 张尚荣 |
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| 作者单位： | 宁夏大学土木与水利工程学院, 宁夏 银川 750021,宁夏大学土木与水利工程学院, 宁夏 银川 750021,交通运输部公路科学研究院, 北京 100088,宁夏大学土木与水利工程学院, 宁夏 银川 750021 |
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| 基金项目： | 宁夏自然科学基金项目（NZ16006）；宁夏大学高水平人才科研启动基金（BQD2015005） |
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| 摘 要： | 从断层时间尺度、活动性、场地效应等方面阐述跨断层桥梁的定义与内涵;从"功能性"、"制约性"、"地表破裂变异性"、"设计缺陷"4方面分析跨断层桥梁"不得不"面临较大的地震破坏风险的原因;最后以1979年Imperial Valley地震中El Centro台阵收集到的强震记录为基础,对断层破裂强震记录特征及地震动传播机理进行分析,研究断层两侧地面运动分布规律,建议跨走滑断层桥梁的地震动输入方向。本文研究结果对促进跨断层桥梁抗震设防具有借鉴意义。
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| 关 键 词： | 桥梁 地表破裂 地震动输入方向 抗震 |
| 收稿时间： | 2016/12/5 0:00:00 |
Discussion about Earthquake Resistance of the Bridges Crossing the Active Fault |
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| HUI Yingxin,TAI Yuji,WANG Kehai and ZHANG Shangrong.Discussion about Earthquake Resistance of the Bridges Crossing the Active Fault[J].Northwestern Seismological Journal,2017,39(5):870-875,889. |
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| Authors: | HUI Yingxin TAI Yuji WANG Kehai and ZHANG Shangrong |
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| Institution: | College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, Ningxia, China,College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, Ningxia, China,Research Institute of Highway, Ministry of Transport, Beijing 100088, China and College of Civil and Hydraulic Engineering, Ningxia University, Yinchuan 750021, Ningxia, China |
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| Abstract: | The connotation of bridges crossing the active fault (BCAF) was discussed in terms of time scale, fault activity and site effect. The great earthquake damage risks BCAF has to face was analyzed, and the reasons are summarized as "function" and "restriction" and so on. Based on the strong motion records of Imperial Valley earthquake collected by the El Centro array in 1979, the characteristics of strong earthquakes and the mechanism of earthquake ground motion of fault-rupture were analyzed, the ground motion distribution law on both sides of fault was studied, and a suggestion is put forward for the ground motion input direction of bridges crossing the strike-slip fault. The research results have reference significance for the promotion of seismic fortification of BCAF. |
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| Keywords: | bridge surface rupture incident angle of ground motion seismic resistance |
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