设计参数对吊拉组合体系桥抗风性能的影响分析  

Analysis of Influence of Design Parameters on Wind Resistance Performance of Suspension and Cable-Stayed System Bridges

作　　者：张新军[1] 

机构地区：[1]浙江工业大学,浙江杭州310014

出　　处：《桥梁建设》2008年第2期23-26,共4页Bridge Construction

基　　金：浙江省自然科学基金资助项目(502118)

摘　　要：为给吊拉组合体系桥的抗风设计提供理论依据,以1 400 m主跨的吊拉组合体系桥设计方案为例,采用三维非线性空气静力和动力稳定性分析方法,系统地分析了各主要设计参数包括主缆矢跨比、吊跨比、边跨长度、斜拉索索面布置形式以及边跨辅助墩设置等对吊拉组合体系桥抗风性能的影响,并探讨了其合理的取值范围。In order to provide the theoretic basis for wind resistance design of the suspension and cable-stayed system bridges, the proposed design of a suspension and cable-stayed system bridge with a main span 1 400 m is taken as an example and the three-dimensional nonlinear aerostatic and aerodynamic stability analysis method is used to systematically investigate the influence of various principal design parameters, including those of the sag-to-span ratio of main cable, suspension-to-span ratio, side span length, stay cable plane arrangement and auxiliary pier arrangement at side spans, on the wind resistance performance of the bridges and meanwhile, the selection of rational value ranges of the design parameters are also discussed.

关 键 词：吊拉组合体系桥 抗风性能 设计参数 力学分析 

分 类 号：U448.29[建筑科学—桥梁与隧道工程]