作　　者： ; ; ; ;

机构地区： 湖南大学土木工程学院

出　　处： 《湖南大学学报（自然科学版）》 2005年第4期24-28,共5页

摘　　要： 长短桩复合地基可充分发挥地基土的潜能,有效提高地基承载力和减少地基沉降.为了进行优化设计,在探讨长短桩复合地基承载力和沉降计算方法的基础上,建立了长短桩复合地基优化设计数学模型,提出了基于模拟退火算法的长短桩复合地基优化设计方法,同时给出了两个优化设计算例.结果表明,该方法不仅可有效地保证设计方案技术上可靠,而且可获得最佳的经济效益.最后讨论了设计计算参数对优化设计的影响. Long-and-short-piles composite foundation （LSPCF） can fully mobilize the potential of the ground soil. It can also effectively increase the bearing capacity and decrease the settlement of the ground. However, its optimization design has so far not yet been given enough attention. First, the bearing capacity and the settlement of long-and-short-piles composite foundation were discussed; Then a mathematical optimization model for the design of long-short-piles composite foundation was developed, and a new optimization design method was proposed based on simulated annealing. Two practical examples were given to verify the proposed method, and the results showed that it was not only technically reliable but also economically efficient. In the end, the influence of calculation parameters on the results of optimization design was discussed.

关 键 词： 地基 桩 优化设计 模拟退火算法

领　　域： [建筑科学] [建筑科学] [理学] [理学]