基于标准跨径的铁路桥梁孔跨匹配与条件优化方法  

Span Matching and Condition Optimization Method for Railway Bridges Based on Standard Spans

作　　者：廖立坚 杨新安[2] 苏伟 王雨权 李黎 LIAO Lijian;YANG Xin’an;SU Wei;WANG Yuquan;LI Li(China Railway Design Corporation,Tianjin 300308,China;College of Transportation Engineering,Tongji University,Shanghai 201804,China;China Railway Liuyuan Group Co.,Ltd.,Tianjin 300308,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308 [2]同济大学交通运输工程学院,上海201804 [3]中铁第六勘察设计院集团有限公司,天津300308

出　　处：《铁道学报》2023年第11期164-172,共9页Journal of the China Railway Society

基　　金：国家重点研发计划(2022YFB2603403);中国国家铁路集团有限公司科技研究开发计划(P2022G054);中国铁路设计集团有限公司科技开发课题(2021 A240602)。

摘　　要：铁路桥梁长度长,跨越控制因素多,当采用标准梁跨设计时,为解决全桥梁跨匹配与优化问题,建立以梁跨重要性系数之和为目标函数,以道路、河流、管线为约束条件的整数线性规划模型,提出按约束条件分区布置再逐一合并的递推求解方法。结果表明,面对超大规模的最优化数学模型,通过定义布孔长度下限、布孔长度上限、修正布孔长度等参数,建立约束条件之间的联系,降低模型的计算维度,实现递推求解过程,从而节省求解时间。应用于多条高速铁路桥梁设计中,攻克铁路桥梁方案自动化设计的难题,解决长大桥梁精确、高效、经济的孔跨布置问题,实现梁跨与道路河流管线的优化匹配。Railway bridges have a long length with multiple crossing control factors.During the use of standard beam span design,in order to solve the problem of matching and optimizing the entire bridge span,an integer linear programming model was established with the sum of the importance coefficients of the beam span as the objective function and roads,rivers,and pipelines as constraints.A recursive solution method was proposed,which was arranged in zones according to the constraints before being merged one by one.The results show that in the face of large-scale optimization mathematical models,by defining parameters such as the lower limit of the span length,the upper limit of the span length,and modifying the span length,the relationship between constraint conditions is established.The computational dimension of the model is reduced to achieve the recursive solution process,thereby saving.the solution time.The application of this method to the design of multiple high-speed railway bridges helps overcome the problem of automated design of railway bridge schemes,solving the problem of accurate calculation of efficient and economical layout of spans of long bridges,achieving optimal matching between beam spans and roads,rivers,and pipelines.

关 键 词：标准设计 孔跨布置 整数线性规划 孔跨匹配与条件优化 

分 类 号：U24[交通运输工程—道路与铁道工程]