喀斯特地基中土洞对地基变形的影响  

Effect on Foundation Deformation by Soil Cave in Karst Ground

作　　者：刘之葵[1] 梁金城[2] 

机构地区：[1]中南大学地学与环境工程学院,长沙市410083 [2]桂林工学院,广西桂林541004

出　　处：《勘察科学技术》2004年第5期31-33,62,共4页Site Investigation Science and Technology

基　　金：广西自然科学基金资助项目 (桂科自 0 2 2 90 5 5号 );桂林工学院青年基金项目

摘　　要：喀斯特地区的建筑物建成后 ,地基中由于地下水或地表水的作用 ,往往还会发育土洞。根据弹塑性理论 ,可求出土洞周围土体的应力状态 ,继而推求出地基中任一点的变形沉降。结合工程实例针对各种土层中发育的土洞对地基变形的影响进行了探讨 ,得出了一些有借鉴意义的结论供同行参考。After building construction in karst area,there always develop soil caves because of function of ground water and surface water in foundation.From elastic and plastic theories the stress state of soil body around of soil cave can be obtained and then deformed settlement at any point in foundation deduced.We discussed the effect on foundation deformation by soil caves which are developed in various soil layers combined with project case histories.Some conclusions we got may have reference for our colleagues.

关 键 词：喀斯特 地基 建筑物 地下水 应力状态 

分 类 号：TU475[建筑科学—结构工程]