任意对称刚性地基上土工管袋充填形状和受力分析  

Shape and mechanical behavior of geotubes on rigid foundation with symmetry arbitrary shape

作　　者：刘伟超[1] 张仪萍[1] 杨艳[1] 俞亚南[1] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058

出　　处：《浙江大学学报（工学版）》2011年第7期1308-1313,共6页Journal of Zhejiang University：Engineering Science

基　　金：中央高校基本科研业务费专项资金资助项目(KYJD09036)

摘　　要：为了计算在地基不平整的情况下土工管袋的形状及受力,根据充填管袋微段受力平衡条件和几何条件,建立任意对称形状刚性地基上土工管袋的受力平衡量纲一的方程组以及求解条件.运用Matlab进行求解,与已有理论解进行比较,验证了该方法的正确性.通过开口向上抛物线形、直线形和开口向下抛物线形3种形状的地基上单个管袋和2个堆叠管袋的比较,表明地基形状对管袋充填形状、袋体拉力等有明显的影响.袋体周长越长、允许拉力越小,地基形状的影响越大.In order to obtain the shape and tension of the geotextile tube,the control equilibrium equations of the tubes rested on rigid foundation with symmetry arbitrary shape and the solution conditions of which were established with nondimensional method according to the forces equilibrium and geometrical condition of the element of the tube.The solutions were deserved with Matlab and compared with the previous theoretical solutions,which verified the validity of the method.One single tube and two stacked tubes rested on convex,concave and straight foundations were compared.Results show that the shape and the tension of the tube can be significantly affected by the form of the foundation.The longer the perimeter is and the smaller the allowable tension is,the greater the effect of foundation shape can be.

关 键 词：砂浆 土工膜袋 充填特性 任意形状 刚性地基 

分 类 号：U655.54[交通运输工程—港口、海岸及近海工程]