组合式桥台及其台后填土破坏的拱桥承载力分析评定  

Analysis and evaluation of bearing capacity of arch bridge with combined abutment and backfilling damage

作　　者：赖道斌 LAI Daobin

机构地区：[1]福建省建筑科学研究院有限责任公司,福建省绿色建筑技术重点实验室,福建福州350108

出　　处：《福建建设科技》2023年第1期117-119,共3页Fujian Construction Science & Technology

摘　　要：组合式桥台是一种常用的拱桥桥台,其后座与台后土压力共同承担拱脚水平推力,为了解后座及台后填土完整对该类型拱桥的重要性,以某桥台遭受破损的拱桥为背景,采用静力平衡法对受损的桥台后座进行抗滑动稳定性验算,并对主拱圈进行承载力验算,结果表明,组合式桥台结构完好对拱桥受力安全至关重要,后座破坏将严重削弱组合式桥台的抗滑动稳定性及主拱圈承载力,有严重的安全隐患。The combined abutment is a commonly used arch bridge abutment.The earth pressure behind the abutment and its back seat jointly bear the horizontal thrust.In order to understand the importance of complete filling behind the back seat to this type of arch bridge,taking an arch bridge with a damaged abutment as the background,the anti-sliding stability of the damaged abutment back seat is checked by using the static balance method,and the bearing capacity of the main arch ring is checked.The results show that the integrity of the combined abutment is very important to the safety of the arch bridge.The failure of the back seat will seriously weaken the anti-sliding stability of the combined abutment and the bearing capacity of the main arch ring,resulting in serious potential safety hazards.

关 键 词：组合式桥台 拱桥 承载力 抗滑动稳定性 

分 类 号：U441[建筑科学—桥梁与隧道工程] U448.22[交通运输工程—道路与铁道工程]