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已有裂缝重力坝加高后的工作性态
引用本文:颜天佑,钮新强,李同春,赵兰浩,吴德绪,吕国梁.已有裂缝重力坝加高后的工作性态[J].水利水电科技进展,2009,29(1):47-51.
作者姓名:颜天佑  钮新强  李同春  赵兰浩  吴德绪  吕国梁
作者单位:1. 河海大学水利水电工程学院,江苏,南京,210098
2. 河海大学水利水电工程学院,江苏,南京,210098;长江水利委员会长江勘测规划设计研究院,湖北,武汉,430010
3. 长江水利委员会长江勘测规划设计研究院,湖北,武汉,430010
基金项目:国家科技支撑计划重大项目 
摘    要:基于瞬态温度场和徐变应力有限元法,对某重力坝加高工程的温度场与应力场进行有限元仿真计算。对老坝体纵向裂缝和新老混凝土接合面的接触问题采用有限元混合法进行模拟,重点分析老坝体纵向裂缝产生的原因,研究坝体加高后对老坝体纵向裂缝以及坝体关键部位的影响,对大坝的加高工程具有一定的参考价值。

关 键 词:大坝加高  纵向裂缝  新老混凝土接合面  重力坝
修稿时间:2009/2/18 0:00:00

Working behavior analysts for a heightened gravity dam with longitudinal cracks
YAN Tian-you,NIU Xin-qian,LI Tong-chun,ZHAO Lan-hao,WU De-xu,LV Guo-liang.Working behavior analysts for a heightened gravity dam with longitudinal cracks[J].Advances in Science and Technology of Water Resources,2009,29(1):47-51.
Authors:YAN Tian-you  NIU Xin-qian  LI Tong-chun  ZHAO Lan-hao  WU De-xu  LV Guo-liang
Abstract:Based on the finite element method of transient temperature fields and creep stress,finite element simulation analysis of the temperature field and stress field of the heightening process of a gravity dam is carried out.Contacting problems of the longitudinal cracks in the original dam and the adjoining face between old and new concrete are simulated with the mixed finite element method.The causes of longitudinal cracks are analyzed.The effects on the longitudinal cracks in the original dam and the key parts of the dam after heightening are also studied,and provide a certain reference value for other gravity dam heightening projects.
Keywords:dam heightening  longitudinal crack  joint face between old and new concrete  gravity dam
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