摘要
针对高墩大跨连续刚构桥稳定性问题,结合工程实例,分析了主桥在裸墩、最大悬臂、成桥阶段3种不同状态下结构的稳定性。结果表明:各阶段稳定性主要由其自重荷载控制;裸墩及成桥状态不控制设计,风荷载对结构稳定影响甚微,汽车荷载对成桥阶段结构稳定有一定影响,不可忽略;最大悬臂状态是结构稳定分析的控制阶段,在设计和施工阶段应引起足够重视。
Focusing on stability problems of the high-pier large-span continuous rigid frame bridge and based on engineering practice,this paper analyzed the structural stability of the main bridge in three stages of the bare pier,maximum cantilever,and complete bridge.The results showed that the stability in each stage was mainly controlled by its dead weight load,and the bare pier and complete bridge stages were not controlled.The wind load had little effect on the structural stability,while the automobile load had a certain influence on the structural stability in the complete bridge stage,which should not be neglected.The maximum cantilever state was the control stage of structural stability analysis,which should be paid enough attention in the design and construction stages.
作者
刘军
LIU Jun(Shanxi Engineering Vocational College,Taiyuan,Shanxi 030009,China)
出处
《山西交通科技》
2023年第3期76-78,共3页
Shanxi Science & Technology of Transportation
关键词
高墩大跨
连续刚构桥
稳定性
high-pier large-span
continuous rigid frame bridge
stability
