三峡茅坪溪沥青混凝土心墙堆石坝应力变形分析

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英文篇名：Numerical study on Maopingxi Rockfill Dam with asphalt concrete core in Three Gorges Project 中文刊名：长江科学院院报 英文刊名：Journal of Yangtze River Scientific Research Institute 作者：张丙印 ; 李全明 ; 熊焰 ; 高莲士 英文作者：ZHANG Bing-yin~1 ; LI Quan-ming~1 ; XIONG Yan~2 ; GAO Lian-shi~1 (1. Department of Hydraulic Engineering ; Tsinghua University ; Beijing 100084 ; China ; 2. Changjiang Exploration Planning Design Institute ; Wuhan 430010 ; China) 中文关键词：茅坪溪 ; 沥青混凝土心墙 ; 堆石坝 ; 三峡工程 ; 有限元 英文关键词：Maopingxi ; asphalt concrete core ; rockfill dam ; Three Gorges Project ; FEM 出版日期：2004-03-30 机构：清华大学水利水电工程系,清华大学水利水电工程系,长江勘测规划设计研究院,清华大学水利水电工程系 北京　100084 ,北京　100084 ,湖北武汉　430010 ,北京　100084 年：2004 期：02 出版单位：长江科学院院报

摘要

茅坪溪沥青混凝土心墙堆石坝是三峡工程挡水建筑物的重要组成部分。为了研究坝体及心墙在施工和蓄水条件下的工作性状,分别使用邓肯Eμ模型和清华非线性解耦KG模型,对茅坪溪沥青混凝土心墙堆石坝进行了应力和变形的有限元计算分析。计算中对心墙沥青混凝土使用了参照现场钻孔芯样试验成果修正后的强度和变形参数。根据计算结果,坝体及心墙的应力和变形值均处在合理范围之内,表明茅坪溪防护坝采用沥青混凝土心墙堆石坝坝型,并利用现场开挖料分区填筑的坝体设计方案是合理和可行的。通过对比分析,还对坝体的施工程序提出了建议。
Maopingxi Rockfill Dam with the asphalt concrete core is an important part of Three Gorges Project. A nonlinear finite element analysis was carried out to examine the probable states of stress-strain in the dam body and its impervious core during the stages of construction and water storage. Both Duncan-Chang's E-μ model and the Tsinghua KG model were employed in the calculation for comparison. Samples of asphalt concrete taken from the bottom part of early constructed core were tested to determine the strength and deformation parameters used in the constitutive models. According to the analysis results, the stress intensities and deformation values were within safety ranges, which testified the rationality and feasibility of the dam design. Suggestions about the construction procedure were presented based on the calculation.

引文

[1]　熊　焰.三峡茅坪溪沥青混凝土心墙坝工程设计[J].土石坝工程,1998,(1):113-117.
    [2]　张丙印,汪召华,高莲士.三峡枢纽工程茅坪溪沥青混凝土心墙堆石坝应力变形分析[R].北京:清华大学水利水电工程系,2000.
    [3]　高莲士,宋文晶.非线性解耦K G模型及其特点[A].土石坝与岩土力学技术研讨会论文集[C].北京:地震出版社,2001,23-25.