岩质坡地建筑设计水平地震动放大系数的确定  

Amplification factors of design horizontal ground motions for structures on rock slopes

作　　者：李英民[1,2] 王丽萍[2] 赵耀[2] 

机构地区：[1]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [2]重庆大学土木工程学院,重庆400045

出　　处：《地震工程与工程振动》2010年第4期159-165,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(90815011);国家科技支撑计划子课题资助项目(2009BAJ28B01-2)

摘　　要：为确定岩质坡地建筑设计水平地震动放大系数,以满足实际工程中坡地建筑结构设计的需要,本文采用有限元数值分析方法,计算了高度在10~70 m范围,坡角在15°~60°范围内的28个黏弹性岩质坡地模型在白噪声输入下的线弹性响应,分析了坡高及坡角对坡地斜坡段反应谱及谱比的影响规律,给出了岩质坡地斜坡段设计水平地震动放大系数,为抗震规范有关内容的规定提供研究基础和依据。It is necessary to determine the amplification factors of design horizontal ground motions for designing structures on rock slopes.The horizontal seismic elastic responses of 28 viscoelastic rock slopes subjected to white noise exciting,with height of 10 to 70 m and slope of 15° to 60°,are calculated by numerical finite element analysis method.The influences of height and degree of slope on response spectrum and response spectral ratio are analyzed.The amplification factors of design horizontal ground motions for structures on rock slopes are given to be the references to codes for seismic design of building structures.

关 键 词：坡地建筑 反应谱谱比 设计地震动放大系数 

分 类 号：P315.952.9[天文地球—地震学]