独柱墩桥梁倾覆防控方法及应用
Anti-overturning Control Methods and Applications for Single-column Pier Bridge
周知献 1王再冉 1秦玮良 1陈婷1
作者信息
- 1. 中交第一公路勘察设计研究院有限公司,陕西 西安 710000
- 折叠
摘要
独柱墩桥梁倾覆防控应综合考虑抗倾覆稳定性能提升幅度需求及桥梁周围环境限制因素择优选择设计方案.通过分析独柱墩桥梁倾覆破坏机理及倾覆验算方法,提出独柱墩桥梁"改变结构破坏模式、提高稳定性能、设置冗余约束"三种倾覆防控思路,经对比,增大失效支座与有效支座的中心间距从而提高独柱墩桥梁稳定性能在实际工程中具有广泛的适用性.提出在独柱墩位置横桥向增加支撑数量从而加大支座间距及拉大桥台(过渡墩)位置支座间距两种设计思路,结合桥梁实际情况给出五种设计方法,对不同方法的适用性及经济性进行了对比分析.
Abstract
The prevention and control of overturning of single-column pier bridge should comprehensively consider the need for im-provement in anti-overturning stability performance and the selection of optimal design schemes based on environmental constraints a-round the bridge.By analyzing the overturning failure mechanism and overturning verification method of single-column pier bridge,three anti-overturning prevention and control ideas for single-column pier bridge are proposed:changing the structural failure mode,improving stability performance,and setting redundant constraints.After comparison,increasing the center distance between failed and effective bearings to improve the stability performance of single-column pier bridge has wide applicability in practical engineering.Propose two design ideas:increasing the number of bearings in the transverse direction of the bridge at the position of single-column pier to increase the spacing between bearings,and increasing the spacing between bearings(transitional pier)at the position of the abut-ment.Based on the actual situation of the bridge,five design methods are proposed,comparing and analysing the applicability and econ-omy of different methods.
关键词
桥梁工程/独柱墩桥梁/抗倾覆/稳定性Key words
bridge engineering/single-column pier bridge/anti-overturning/stability引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据