心墙坝应力变形数值模拟结果验证  

Verification of numerical simulation results of stress and deformation of core-wall dams

作　　者：钱亚俊[1] 陈生水[1] 

机构地区：[1]南京水利科学研究院,江苏南京210029

出　　处：《水利水运工程学报》2005年第4期11-18,共8页Hydro-Science and Engineering

摘　　要：利用土石坝有限元应力变形计算分析中常用的邓肯E-ν模型、修正剑桥模型和南水模型,计算新疆“635”水利枢纽砂砾石粘土心墙坝和云南鲁布革堆石风化料心墙坝的应力变形,将计算结果分别与两座心墙坝相对应的原型观测资料进行比较和分析后表明,3种模型均能较好地模拟施工期心墙坝的应力变形性状,而在模拟蓄水期心墙坝应力变形性状时则存在不足.当计入湿化变形和流变变形的影响之后,用南水模型可较好地模拟心墙坝的应力变形性状.Three constitutive models, Duncan E-v model, modified Cambridge model and Nanshui model, which are commonly used in finite element analyses of earth-rock dams, are used to calculate stresses and deformations of “635” Clay-core Gravel Sand Dam in Xinjiang and the Lubuge Weathering-material Rock-fill Dam in Yunnan Province. Comparison between the numerical simulation results and the measured data in-situ shows that the three constitutive models can well simulate the stress and deformation behaviors of the above two dams in the construction stage; however, in storage stage, the simulation results are not satisfactory. And the Nanshui model can well simulate the stress and deformation behaviors of core-wall dams when the wetting deformation and rheology are considered.

关 键 词：心墙坝 应力变形 数值模拟 原型观测资料 验证 

分 类 号：TU431[建筑科学—岩土工程]