文档介绍：第 35卷第 2期昆明理工大学学报(理工版)
http: / /www. kustjourna. / V 35
N o
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2010年 4月
Journal ofK unm ingU n iversity of Science and Technology ( Science and Technology)
Ap r. 2010
do:i 10. 3969 / .j issn. 1007- 855x. 2010. 02. 009
瑞利波作用下半空间饱和土中位移应力分布特性研究
刘林超, 闫启方, 刘
磊
(信阳师范学院土木工程学院, 河南信阳 464000)
摘要: 研究了瑞利波作用下半空间饱和土位移和应力的分布特征, 对于建筑结构抗震设计具有
重要的意义. 基于饱和多孔介质理论, 将土体视为液固饱和两相介质, 利用 H e lm ho ltz分解, 建立
求解了瑞利波作用下饱和土的弥散方程, 得到了半空间饱和土的位移和应力. 分析了渗透系数和
阻尼系数对瑞利波作用下半空间饱和土中位移和应力分布特征的影响.
关键词: 多孔介质; 饱和土; 瑞利波; 粘滞阻尼系数; H e lmholtz分解
中图分类号: TU 573. 12 文献标识码: A 文章编号: 1007- 855X( 2010) 02- 0042- 05
D istribution Characteristics of D isplacem ent and Stress in H alf- Space of
Saturated Soil under RayleighW aves
L IU Lin
chao, YAN Q i
fang, LIU Lei
( Schoo l of C iv il Eng ineering, X inyang N o rma lU n ive rs ity, X iny ang, H enan 464000, Ch ina)
Abstract: It is o f great sign ificance to study the d istribution characteristics of displacem ent and stress in half
space o f satura ted so il under Ray leigh w aves for se ism ic design of bu ild ings. Based on porous m edium theory,
the so il is taken in this paper as fluid tw o
phase m edium. H elmholtz position is then adopted to estab lish
the dispersion equation of soil and to get the d isp lacem ent and stress. The in fluences o f perm eability coe fficient
and damp ing coeffic ient are finally ana lyzed.