摘要
分析了1座山区高墩大跨连续刚构桥在施工期裸墩、最大悬臂阶段和成桥阶段不同结构体系状态下的稳定性差异。研究结果表明:裸墩状态下,风荷载对结构稳定的影响可以忽略;T构最大悬臂状态刚构桥稳定性风险最大,应重点控制施工误差及偶然因素的发生;墩间横系梁的设计对结构稳定性的贡献可以忽略。
The stability difference of a high-pier long-span continuous rigid-frame bridge in mountainous area under the different structural system states in the construction period of bare pier,the maximum cantilever stage and the completion stage of bridge is analyzed.The study results show that the influence of wind load on the stability of the structure can be ignored under the condition of bare pier.The stability risk of T-frame rigid frame bridge in the state of maximum cantilever is the biggest.The construction error and accidental factors should be controlled.The contribution in the design of tie beams between piers to the structural stability can be neglected.
作者
郭森
孟园英
GUO Shen;MENG Yuanying
出处
《城市道桥与防洪》
2021年第8期275-278,M0025,共5页
Urban Roads Bridges & Flood Control
关键词
连续刚构
施工阶段
成桥阶段
施工误差
偶然因素
稳定性
continuous rigid frame
construction stage
bridge completion stage
construction error
accidental factors
stability
