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基于桩 筏基础荷载传递的局部化特性 ,提出了一种简化分析方法 ,即采用悬臂梁比拟筏板与柱周围各桩之间的联系 ,进行桩顶沉降计算 ,再用差分法计算筏板弯矩 .建立了同时考虑桩的弹性支承性质和桩间土参与共同工作的不规则桩 筏基础优化设计数学模型 ,并采用变容差主动约束可行方向法对一实际工程进行优化设计 .
Based on the local characteristics of piled raft foundation load transfer, a simplified analysis method is proposed, that is, using cantilever to compare the relationship between raft and piles around piles, calculating the settlement of pile top, then using the difference method to calculate the raft bending The mathematical model of the optimal design of the irregular piled raft foundation considering both the elastic supporting property of piles and the joint work of soil between piles is established. The actual design of an actual project is optimized by the method of active constraint with the variable tolerance.