统一硬化超固结土模型试验验证  

TEST VALIDATING OF UH MODEL FOR OVER-CONSOLIDATED CLAYS

作　　者：罗汀[1] 李婷婷[1] 侯伟[1] 高智伟[1] 王清祥[1] 

机构地区：[1]北京航空航天大学交通科学与工程学院,北京100191

出　　处：《工业建筑》2008年第8期21-24,共4页Industrial Construction

基　　金：国家自然科学基金资助项目(10672010;50479001);国家科技支撑计划资助项目(2006BAK12B12)

摘　　要：统一硬化超固结土模型(UH模型)能够反映超固结土的硬化、软化、临界状态、剪缩和剪胀等应力-应变特性以及应力路径对它的影响。通过对北京奥林匹克森林公园的原状土在相同的前期固结压力条件下做不同超固结度等围压三轴固结排水试验以及对模型的预测结果与试验数据的比较,说明了统一硬化超固结土模型的合理性。The unified hardening model for over-consolidated clays （for short as UH model） can simulate many characteristics of over-consolidated clays well, including stress-strain relationships, stress dilatancy, strain hardening and softening, and path dependency behavior. Through the triaxial drained tests for the nature state clays in Beijing Olympic Forest Park, the material parameters of the UH model are determined. The comparison between the model predictions and the test results indicate the UH model can describe the mechanical behavior of over-consolidated clays rationally.

关 键 词：超固结土 伏斯列夫面斜率 统一硬化模型 试验 

分 类 号：TU432[建筑科学—岩土工程] TU473.16[建筑科学—土工工程]