调整柱距处理岩溶塌陷地基的距离  

Adjusting column distance in karst collapse foundation treatment

作　　者：刘之葵[1] 梁金城[1] 熊丽芳[1] 陈学军[1] 

机构地区：[1]桂林工学院土木工程系,广西桂林541004

出　　处：《桂林工学院学报》2004年第3期307-310,共4页Journal of Guilin University of Technology

基　　金：广西自然科学基金资助项目(桂科自0229055);广西区教育厅资助项目(桂教科研[2002]316)

摘　　要：在已稳定的塌陷地基中,根据塌陷土体所能提供的被动土压力强度与地基土体所产生的主动土压力强度来判别地基未塌陷土体的局部稳定性.算例分析表明,采用调整柱基础距离或调整基础埋深,可保证地基土体不破坏;地下水位的升降对地基未塌陷土体的局部稳定性的影响显著,地下水位上升不利于地基的稳定性.根据极限平衡条件推导出新的方法,可用以判定地基未塌陷土体的整体稳定性.In stabilized collapse foundation,based on the passive earth pressure strength from the collapse soil and the active earth pressure strength from the foundation soil, the partial stability of foundation soil can be determined.Through the analysis of engineering calculating cases, when the column distance is adjusted or the foundation embedment is changed, the foundation soil will not be destroied. The effect on the partial stability of foundation soil is obvious because of the variation of groundwater level.The rising of groundwater indicates disadvantage for foundation stability.With the method deduced by the limit equilibrium condition, the foundation stability can be determined.

关 键 词：柱距调整 岩溶 塌陷 地基稳定性 

分 类 号：P931.5[天文地球—自然地理学] P642.26