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液化场地桩基桥梁震害响应大型振动台模型试验研究 被引量:52
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作者 凌贤长 郭明珠 +3 位作者 王东升 王臣 王丽霞 王志强 《岩土力学》 EI CAS CSCD 北大核心 2006年第1期7-10,22,共5页
采用大型振动台进行液化场地桩基桥梁震害响应模型试验,很好再现了自然地震触发场地液化及结构破坏的各种宏观现象。0.15gEl Centro波输入下,上部砂层局部液化,桩-柱墩加速度主要表现为低频反应,桩动应变幅值自下而上很快增大、到达地... 采用大型振动台进行液化场地桩基桥梁震害响应模型试验,很好再现了自然地震触发场地液化及结构破坏的各种宏观现象。0.15gEl Centro波输入下,上部砂层局部液化,桩-柱墩加速度主要表现为低频反应,桩动应变幅值自下而上很快增大、到达地表则大幅度减小。0.5gEl Centro波输入下,整个砂层全部液化,桩被折断且加速度也主要表现为低频反应,桩动应变幅值自下而上很快增大、到达地表则大幅度减小。砂层液化与否,对桩-柱墩动力反应影响很大。 展开更多
关键词 液化场地 桩基桥梁 震害响应 大型振动台模型试验
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Overview of Earthquake Preparedness and Disaster Mitigation in China1
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作者 Zhu ShilongDepartment of International Cooperation, China Seismological Bureau, Beijing 100036, China 《Earthquake Research in China》 2002年第3期210-216,共7页
As an earthquake-prone country, China has made sustained efforts in the study of earthquakes and disaster mitigation during the past several decades, with China Seismological Bureau (CSB) as the backbone of these effo... As an earthquake-prone country, China has made sustained efforts in the study of earthquakes and disaster mitigation during the past several decades, with China Seismological Bureau (CSB) as the backbone of these efforts. Working towards this purpose, a series of key projects were implemented in the “Ninth Five-Year Plan” (1995-2000) to upgrade earthquake monitoring systems and to improve the supporting infrastructure, significant results in earthquake science were achieved. In the new century, we have worked out a blueprint for earthquake preparedness and disaster mitigation in the “Tenth Five-Year Plan”, which emphases 3 systems (i.e. Seismic Monitoring & Prediction, Seismic Hazards Prevention, Emergency Response), and 10 key projects in earthquake science and technology. 展开更多
关键词 Earthquake preparedness Disaster mitigation Earthquake monitoring system Seismic hazards prevention Emergency response
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