空间桩基优化  

The Space Pile Foundation Optimization

作　　者：盛兴旺[1] 裘伯永[1] 郗蔚东 

机构地区：[1]长沙铁道学院 [2]铁道部第四勘测设计院

出　　处：《长沙铁道学院学报》1991年第3期154-162,共9页Journal of Changsha Railway University

摘　　要：空间桩基优化是一个设计变量多、工况多、约束条件多,且包括截面、几何、拓扑及离散变量的优化问题,难度较大。根据优化理论,设计规范及设计经验,本文采用了有效的技巧,诸如处理了复杂的桩数设计变量,使目标函数与约束条件为桩数设计变量的显函数等,成功地建立了具有显函数式的优化数学模型,并采用收敛快且稳定的约束变尺度法求解,取得了满意的结果。优化结果节约显著。The optimiztion of the space pile foundation is a very difficult problem that consists of multiple variables,multiple cases and multiple constraint conditions and includes cross-section,geometry, topology optimizations and variable discretization.By using optim- ization theory,design standard and work experience,the auth- ors of this paper succeed in building up the mathematic optimizati- on model whose functions are explicit,and they adopt efficient technique,such as dealing with complex design variable of the pile number and forming the explicit function of object function and constraint conditions.This model is solved by constrained variable matric method that has the fast convergence and good stability and the results obtained are satisfactory.It is shown that this optimization can economize obviously.

关 键 词：桩基础 自动化 设计 桥 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]