边坡极限荷载的统一滑移线解与有限元分析  

SOLUTION OF ULTIMATE LOAD FOR SLOPE BY UNIFIED SLIP LINE FIELD METHOD AND FINITE ELEMENT METHOD

作　　者：程彩霞[1] 赵均海[1] 魏雪英[1] 

机构地区：[1]长安大学建筑工程学院,西安710061

出　　处：《工业建筑》2005年第10期33-35,46,共4页Industrial Construction

基　　金：国家自然科学基金资助项目(批准号:50078046);教育部博士点基金资助项目(编号:20040710001);陕西省自然科学基金资助项目(编号:2003E215)。

摘　　要：应用统一滑移线场理论分析了边坡的极限承载力,给出了钝角边坡和无限半空间土的极限荷载求解公式,此解考虑了材料的拉压异性和中间主应力的效应,并用大型有限元软件ANSYS进行了数值分析,二者结果比较接近,证明了统一滑移线场理论能充分发挥材料的性能,在实际的分析中采用统一解可取得良好的经济效益。The ultimate loads for obtuse slope and semi-infinite body are obtained based on the unified slip line field theory and the unifield strength theory. The strength difference effect and the intermediate principal stress effect are taken into account in this solution.The ultimate loads of the two are also analyzed by the program ANSYS. The predicted values are compared with the solutions based on unified slip line field theory and good agreement can be observed. It can be concluded that the unified slip line field theory is suitable for analysis of the limit loads for obtuse slope and semi-infinite body. And the economic benefit can be obtained from the engineering application of the new theory.

关 键 词：统一滑移线场理论 边坡 极限荷载 有限元 有限元分析 滑移线解 滑移线场理论 极限承载力 中间主应力 ANSYS 

分 类 号：TU43[建筑科学—岩土工程]