地震工程学报
地震工程學報
지진공정학보
China Earthquake Engineering Journal
2015年
2期
534-540
,共7页
岩溶场地%土洞%地震反应%有限元
巖溶場地%土洞%地震反應%有限元
암용장지%토동%지진반응%유한원
karst site%hole%seismic response%finite element method
对典型岩溶场地进行土层地震反应分析,并与非岩溶场地土层的地震反应进行对比,研究岩溶场地地表地震动的基本特性,为岩溶区工程场地地震动参数的确定提供参考。实例研究表明:与非岩溶场地的土层地震反应相比,岩溶场地土层对地震波的放大效应较强,地表地震动的频率偏高;当岩溶场地中发育有土洞时,地表地震动加速度峰值比不含土洞的岩溶场地要大。
對典型巖溶場地進行土層地震反應分析,併與非巖溶場地土層的地震反應進行對比,研究巖溶場地地錶地震動的基本特性,為巖溶區工程場地地震動參數的確定提供參攷。實例研究錶明:與非巖溶場地的土層地震反應相比,巖溶場地土層對地震波的放大效應較彊,地錶地震動的頻率偏高;噹巖溶場地中髮育有土洞時,地錶地震動加速度峰值比不含土洞的巖溶場地要大。
대전형암용장지진행토층지진반응분석,병여비암용장지토층적지진반응진행대비,연구암용장지지표지진동적기본특성,위암용구공정장지지진동삼수적학정제공삼고。실례연구표명:여비암용장지적토층지진반응상비,암용장지토층대지진파적방대효응교강,지표지진동적빈솔편고;당암용장지중발육유토동시,지표지진동가속도봉치비불함토동적암용장지요대。
This study describes the use of finite element analysis to study the seismic response of a typical karst site compared with that of other sites.The results showed that compared with other non-karst sites,karst field soil has a stronger amplification effect on the seismic wave,and the ground motion frequency is higher.When there are holes in the karst site,the seismic peak ground acceleration is larger than that of a non-holed karst foundation.These results provide a reference for the ground motion parameters determined at a karst site.