软粘土循环变形的一种计算方法  

A CALCULATION METHOD OF CYCLIC DEFORMATION OF SOFT CLAY

作　　者：刘锟[1] 赵春风[1] 王成雷[2] 

机构地区：[1]同济大学岩土及地下工程教育部重点实验室,上海200092 [2]中国石油天然气管道工程有限公司,廊坊065000

出　　处：《低温建筑技术》2008年第6期123-125,共3页Low Temperature Architecture Technology

摘　　要：介绍软粘土循环变形的一种计算方法,将循环累积变形与静力荷载作用下的蠕变相等效,建立相应的循环蠕变模型,利用有限元法计算在一系列荷载组合下软粘土变形,得出循环累积变形随循环振次的变化曲线。结合桶型基础模型试验的结果,验证此方法合理性。A method is introduced to calculate the displacement of soft- clay fo,.mdation under the action of cyclic loads. By equalizing the cyclically accumulated deformation as a process of static creep, a corresponding cyclic creep model is created. Then by the finite element method the model is used to calculate the deformation of soft - soil foundation in a series of load units to conclude the curve in which cyclically accumulated deformation varies with the times of cyclic shock. Finally, the rationality of the method is identified by the comparison with the result of model experiment.

关 键 词：蠕变 循环累积变形 有限元 模型试验 

分 类 号：TU442[建筑科学—岩土工程]