陡倾阶梯式建基面上重力坝三维抗滑稳定分析的条块法
Slice Method of 3-D Anti-sliding Stability Analysis for Gravity Dam with Steep Stepped Base Face
  
DOI:
中文关键词:  陡倾阶梯式建基面  重力坝  三维抗滑稳定分析  条分法  二分法
英文关键词:steep stepped base face  gravity dam  3-D anti-sliding stability analysis  slice method  bisection method
基金项目:国家自然科学基金项目(51179062);江苏高校“青蓝工程”资助
作者单位
沈振中 河海大学 水文水资源与水利工程科学国家重点实验室 
杨凡 河海大学 水文水资源与水利工程科学国家重点实验室 
赵茜瑶 天津市水利勘测设计院 
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中文摘要:
      针对建基面成呈复杂折面阶梯状的重力坝抗滑稳定分析,目前尚没有统一和完善的方法。基于三维刚体极限平衡理论以及条分法,提出一种视将坝体看作由若干刚性滑动体组成的重力坝,提出了一种抗滑稳定分析方法——三维抗滑稳定条块法,并设计编制了相应的计算程序。结合采用ANSYS前处理模块的荷载计算方法,对以某重力坝7号岸坡坝段为例进行了抗滑稳定分析计算,结果表明:不同工况下该重力坝7#岸坡坝段抗滑稳定安全系数均能满足规范要求。该法计算理论较严谨,且与现行规范匹配性好,可供类似工程参考。
英文摘要:
      At present there is no common and perfect method for anti-sliding stability analysis of gravity dam with complex multi-zigzag plane base surface. Based on 3-D rigid body limit equilibrium theory and slice method, a method named 3-D anti-sliding stability slice method, which takes the dam body as many sliding rigid bodies, is put forward and the calculation program is developed. Combined with the preprocess module of ANSYS for load calculation, this method is used to analyze the anti-sliding stability of NO.7 bank dam of a hydropower station. The results show that the anti-sliding safety factor of this dam section can reach the requirement of standard. This method has strict computational theory and is easy to use, which can also be used with the current standard with reliable results and can be used for a reference in similar projects.
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