摘要
针对简支空心板桥拓宽拼接缝设计,提出一种应用自攻螺栓的结构形式。基于铰接板法对一种适用于此类拼接设计的横向分布系数计算方法进行改进,对拓宽前后常见的不同跨径简支空心板受力状态进行分析,并将内力值和应力值与规范限值进行对比,总结受力规律,并对基于旧桥改造的简支空心板桥拓宽设计提出一些建议。
This paper suggests a structure using tap bolt for jointing design for simple supported hollow slabbroadening. Based on hinged slab method, this paper improves the transverse distribution indicescalculation that suits for this jointing design. In addition, this paper performs analysis to different spansimple supported hollow slab stress status before/after broadening, and compares inner force and stresswith limits to summarize stress rules and give suggestions for broaden design of simple supported hollowslab bridge in old bridge reconstruction.
出处
《公路交通技术》
2016年第4期101-104,共4页
Technology of Highway and Transport
关键词
桥梁工程
旧桥改造
拓宽接缝
横向分布系数
空心板
Bridge project
old bridge reconstruction
broadening jointing
transverse distribution index
hollow slab
