Inversion on Physic-mechanical Parameters for Weak Sandwich of Giant Building Foundation
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摘要: 以大坝为参照物，对巨型建（构）筑物地基中软弱夹层的物理力学参数E、μ、c、φ进行反演分析，通过建立两个目标函数，合理模拟大坝及基岩软弱夹层的弹－塑性蓄水加载过程，基于罚函数、复合形法等优化手段，对在工程中能否利用反分析法得到合理的E、μ、c、φ作了较好的论证。Abstract: The physical and mechanical parameters E,μ,c,φ for weak sandwich of giant building foundation are inverted based on a great dam. The elastic-plastic loading process to store water for weak sandwich between a dam and its bedrock is reasonably simulated through establishing objective function. It may be better proved that E,μ,c,φ obtained by inversion can or can't be used in a project according to optimization of penalty function and composite deformation method.
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Key words:
- optimization method /
- objective function /
- direct inversion /
- measure displacement
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