摘要
当前复合地基实践中出现了许多以优化为目的的新的生长点,长短桩复合地基作为一种新型的复合地基处理形式,其优化设计即在满足地基承载力和沉降变形的基础上实现最佳经济性的优化目标。本文采用改进的遗传算法,以长短桩桩体总费用为目标函数,全部约束条件均按相应规范要求给出,建立长短桩复合地基的优化设计数学模型,并编制了相应的计算程序。同时给出长短桩复合地基优化设计算例,计算结果表明,此算法能优化设计,降低工程造价,对工程设计有较强的参考价值。
A series of new growth points appear recently in the engineering practice of composite foundation deign and construction from the angle of its optimization.As a new kind of composite foundation form,the optimization design of long-short-pile composite foundation is to realize the optimization goals of best economy.Applying the improved geneticalgorithm,the whole cost of long-short-pile is taken as an objective function.All the constraints are listed following the corresponding specification,a mathematical model of optimal design is established and the corresponding calculation procedure is developed.Meanwhile,a case study about optimal design of long-short-pile composite foundation is given in this paper.The results show that one can optimize design and reduce engineering cost by using this method presented in the paper and the method has good referenced value for engineering designs.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
2011年第6期79-83,共5页
Hydrogeology & Engineering Geology
基金
南京工程学院科研基金项目(QKJC2009004)
关键词
长短桩复合地基
遗传算法
优化设计
承载力
沉降
long-short-pile composite foundation
optimal design
genetic algorithm
bearing capacity
settlement
