Back analysis for dam base deformation modulus based on increment displacement model in construction
Back analysis for dam base deformation modulus based on increment displacement model in construction
复制标题
基于增量位移模型的施工中坝基变形模量反分析
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
Cong, Peijiang
中科院分区：
文献类型：
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作者：
Gu, Yanchang;Jing, Ji;Jin, Yongqiang;Cong, Peijiang
从实用性出发，探讨了用MSC.Marc及其用户子程序实现三维初始地应力场的应用方法，并在此基础上对坝基开挖进行了匡威分析模拟，提出了增量位移加权反演方法，以小湾拱坝为例，对该方法进行了工程实例计算，结果表明，该方法具有较好的实用性。利用开挖有限元模型分别求解了坝基变形模量和初始变形场，并与遗传算法进行了比较，为浇筑模拟提供了依据，为类似工程提供了参考。
For practicability,the method of the application of 3D initial crustal stress field by using MSC.Marc and its user subroutines is discussed in this paper.Based on the method,the excavation of dam base is simulated by converse analysis,the weighted inversion method with increment displacement is put forward.Taking Xiaowan arch dam as the engineering example,the deformation modulus and the initial deformation field for the dam base are obtained separately by the excavation FEM model.At last,the comparison with the genetic algorithm is also made,it provides the basis for the pouring simulation and the conclusions for the other similar projects.