斜坡桥基结构优化设计方法探讨  

Research on Structural Optimum Design Method of High Slope Bridge Foundations

作　　者：袁江雅 岳志平[2] 董诚[2] 

机构地区：[1]常吉高速公路建设开发有限公司,湖南常德415003 [2]湖南省交通科学研究院,湖南长沙410015

出　　处：《公路工程》2008年第6期38-41,共4页Highway Engineering

基　　金：湖南省交通科技项目(200422)

摘　　要：利用结构分析理论,建立了斜坡桥基优化问题的数学模型,提出了斜坡桥基优化设计的两个目标函数:一是桩基容许承载力、二是结构总体积最小。并引入了蚂蚁算法的精英蚂蚁寻优策略,以伪代码形式给出了优化算法的基本步骤,为斜坡桥梁基础优化模型的求解提供了切实可行的优化算法,实现了斜坡桥基的结构优化,对斜坡桥基的设计具有一定的指导意义。By utilization of the structural analysis theory, mathematical model of the high slope bridge foundation optimization problem is set up in this paper. Two objective functions of the optimum design is proposed,one is the permissible bearing capacity of pile foundation , the other is the minimum structure size. The basic procedure of the optimal algorithm is obtained in the form of pseudo code, according to the elitist ant algorithm-optimization strategy. This provides a feasible optimal algorithm for the solution of the high Slope bridge foundation optimum modeling. Structure optimization of the high slope bridge foundations is achieved. The results have an important significance for guiding design of the high slope bridge foundations.

关 键 词：斜坡桥基 优化设计 目标函数 寻优策略 蚂蚁算法 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]