CAJ | 학술논문

由于盆地内外介质的阻抗差别及特殊的几何形状，盆地内部将出现显著的地震动放大效应。针对出平面线源作用下沉积盆地地震响应问题，利用谱元法研究了震源主频率、空间位置和沉积盆地形状等因素对沉积盆地地震响应的影响。数值分析表明：点源的频率和沉积形状对地表的响应影响较大；点源的不同位置对于边缘效应有一定影响。
유우분지내외개질적조항차별급특수적궤하형상，분지내부장출현현저적지진동방대효응。침대출평면선원작용하침적분지지진향응문제，이용보원법연구료진원주빈솔、공간위치화침적분지형상등인소대침적분지지진향응적영향。수치분석표명：점원적빈솔화침적형상대지표적향응영향교대；점원적불동위치대우변연효응유일정영향。
Due to the difference of the medium impedance between the internal and external of basin, and the special geo-metric shapes of basin, there is a remarkable ground motion amplification effect in the basin. In this thesis, the spectral ele-ment method has been used to study the effect of the seismic response of the sedimentary basin caused by different main frequency of anti-plane shear line sources, different point source location, and different sedimentary shapes. The result shows that the frequencies of point source and sedimentary shape have greater influences on the surface response. A different posi-tion of the point source for the edge effect has a certain influence.