某弯桥抗倾覆稳定性计算分析  

Calculation and Analysis of Anti-overturning Stability of a Curved Bridge

作　　者：赵天野 Zhao Tianye(Liaoning Transportation Development Center,Shenyang 110005,China)

机构地区：[1]辽宁省交通运输事业发展中心,沈阳市110005

出　　处：《北方交通》2022年第6期22-24,29,共4页Northern Communications

摘　　要：城市立交桥多采用独柱墩弯桥作为匝道桥,可节约占地空间,但可能发生侧翻事故,为保证车辆安全通行,对独柱墩弯桥进行抗倾覆稳定性分析十分必要。结合工程实例,对此类弯桥在偏载作用下的抗倾覆能力进行计算分析,介绍了抗倾覆稳定性验算过程,分析了设置预偏心后对支座受力状态、抗倾覆稳定性及梁端扭矩的影响,提出提高桥梁抗倾覆稳定性的相关措施,为路政管理部门监管工作提供参考。Urban overpasses mostly use single pier curved bridges as ramp bridges,which can save floor space,but rollover accidents may occur.In order to ensure the safe passage of vehicles,it is necessary to analyze the anti-overturning stability of the single pier curved bridge.In combination with the engineering project,the anti-overturning capacity of this kind of curved bridge under eccentric load is calculated and analyzed,the checking calculation process of anti-overturning stability is introduced,the influence of setting pre eccentricity on the bearing stress state,anti-overturning stability and beam end torque is analyzed,and relevant measures to improve the anti-overturning stability of the bridge are put forward,so as to provide reference for the supervision of road administration management departments.

关 键 词：弯桥 独柱墩 抗倾覆稳定性 偏载 设置预偏心 

分 类 号：U441[建筑科学—桥梁与隧道工程]