地震面波产生的地震动转动分量研究  

Rotational components of earthquake ground motions derived from surface waves

作　　者：李宏男[1] 孙立晔[1] 

机构地区：[1]沈阳建筑工程学院,沈阳110015

出　　处：《地震工程与工程振动》2001年第1期15-23,共9页Earthquake Engineering and Engineering Dynamics

基　　金：国家杰出青年基金!(50025823);辽宁省青年科研人才培养基金!(973010)

摘　　要：本文利用弹性波动理论对地面转动分量，即瑞利（Ｒａｙｌｅｉｇｈ）波和乐夫（Ｌｏｖｅ）波产生的转动分量进行了研究，给出了相应的计算公式和计算方法．特别注意到面波的频散效应对转动分量的影响，并将这一特性引入到转动分量的求取中，使问题的解决更切合于实际。最后选取实际地震记录，利用得到的公式计算出地震面波产生的转动分量。In this paper, the rotational components of earthquake ground motions are derived from the surface waves, the Rayleigh and Love waves by using the theory of elastic wave motion. The relevant calculational formula and approach are given. Especially, the dispersion of surface waves is introduced to the rotational components, whihc may be more suitable for engineering practice. Finally, numerical examples of the rotational components from the earthquake records are presented by using the given methods.

关 键 词：地震转动分量 相速度 散射效应 地震面波 瑞利波 弹性波理论 

分 类 号：P315.9[天文地球—地震学]