摘要
基于几次大地震现象的启迪,分析在盆地效应的作用下,墨西哥城具特殊工程地质性质的软土,放大地震波,增强地震烈度,加重地震灾害。指出强震区场地土条件对地震动特性的影响可导致地基土的卓越周期与建筑物的自振周期产生共振,这一效应使自振周期较长的工程结构在地震力的作用下破损并导致建筑物彻底毁坏。研究震区盆地效应是服务于工程抗震工作的重要方面。
Acting under the basin effect, effect of the Mexican soft soil on earthquake damage is a important factor, one can amplify the earthquake wave and strengthen intensity, in this condition, resonance between the foundation soil and building would take place. Thus,the earthquake disaster can be strengthened and the building can be inverted thoroughly.The mechanism of basin and ground effect in earthquake area is studied for giving service to the engineering seismology in the paper.
出处
《世界地震工程》
CSCD
2003年第1期113-120,共8页
World Earthquake Engineering
关键词
场地土
地震波
放大效应
盆地效应
软土
建筑物
earthquake phenomena
basin effect
mexican soft soil
building foundation-soil interaction
