水资源与水工程学报

董龙根，沈长松，施震余，李晓晨，王妞.分期蓄水和湿化作用对心墙堆石坝应力变形的影响水资源与水工程学报[J].,2015,26(2):220-225

分期蓄水和湿化作用对心墙堆石坝应力变形的影响

Effect of staging impoundment and humidification on stress deformation of core wall rock-fill dam

DOI：10.11705/j.issn.1672-643X.2015.02.044

中文关键词: 沥青混凝土心墙堆石坝分期蓄水湿化变形应力变形分析 Duncan-Chang模型

英文关键词:asphalt concrete core wall rock-fill dam staging impoundment wetting deformation stress and strain analysis Duncan-Chang model

基金项目:

作者	单位
董龙根¹，沈长松¹，施震余²，李晓晨¹，王妞³	（1.河海大学水利水电学院，江苏南京 210098； 2.上海市水利工程设计研究院有限公司，上海 200061；3.南京水利科学研究院水文水资源与水利科学国家重点实验室，江苏南京 210029）

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中文摘要:

基于Duncan-Chang E-B材料本构模型，采用大型通用有限元分析软件ABAQUS，针对坝体在实际运行中分期蓄水和湿化作用的影响，对某沥青混凝土心墙堆石坝进行非线性有限元分析。在一次性蓄水、考虑湿化的一次性蓄水和分期蓄水时沥青混凝土心墙堆石坝应力应变特性的基础上，分别对坝体和心墙的水平位移、竖直沉降、大小主应力进行比较。结果表明：分期蓄水对坝体和心墙的应力变形影响较小；湿化作用对坝体和心墙的应力变形影响较大，在计算中应考虑其影响。

英文摘要:

Based on Duncan-Chang E-B material model and aimed at the effect of staging impoundment and wetting deformation in practical application，the paper analyzed an rock-fill dam with asphalt concrete core by the finite element software ABAQUS.It contrasted horizontal displacement，vertical settlement and the size of principal stress of dam body with core respectively based on dam，s strain stress characteristic under the one-time impoundment，considering the humidification one-time impoundment and by-stage impoundment.The results show that staging impoundment has little effect on the stress and deformation of dam body and core，but humidification has large influence on the deformation and stress of dam body and core so its effect should be considered in calculation.

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