部分斜拉桥斜拉索设计方法研究  

Research on Cable Design of Partially Cable-Stayed Bridge

作　　者：郑一峰[1] 黄侨[1] 张宏伟[2] 

机构地区：[1]哈尔滨工业大学交通学院,哈尔滨市150090 [2]吉林省公路勘测设计院,长春市130021

出　　处：《公路》2005年第2期27-31,共5页Highway

摘　　要：部分斜拉桥结构体系具有斜拉桥和连续梁桥的双重结构特性,其主要承重构件斜拉索的设计与斜拉 桥斜拉索有不同之处,本文介绍了部分斜拉桥拉索、索鞍的构造特点及锚固方式,研究了部分斜拉桥斜拉索静力强 度的允许应力[σ]=0.6Rb的合理性和以此值作为应力上限的200万次循环荷载作用下拉索的抗疲劳强度。通过 两座部分斜拉桥拉索的疲劳试验结果,验证了本文介绍的疲劳强度设计方法的正确性。The cable design of partially cable-stayed bridges is quite different from that of cable-stayed bridges, because of its dual structural properties both embodies cable-stayed bridges and continuous beams. The structural characteristic and anchorage ways of cable and cable saddle are mainly introduced, the rationality of tolerated stress of static strength [σ]=0.6 R b y and the anti-fatigue strength under 2 million circled load by regarding this tolerated stress as the upper limitation are also developed. At last, correctness of the design methods about fatigue strength via the fatigue experimental results of two partially cable-stayed bridges are verified.

关 键 词：部分斜拉桥 斜拉索 桥结构 索鞍 构造特点 连续梁桥 设计方法 静力 承重构件 循环荷载作用 

分 类 号：U448[建筑科学—桥梁与隧道工程] U442.5[交通运输工程—道路与铁道工程]