摘要
以几内亚Boffa省一在建斜拉桥为例,对其中跨主梁悬拼的施工过程进行分析,介绍了桥梁结构稳定性分析在施工监控中的实际应用。通过对不同焊接进度情况的模拟,分析了长悬臂工况下主梁结构的第一及第二类稳定系数,并得出满足规范的结构不失稳的最低焊接速度,进而指导实际施工、明确监控目标。
Taking a cable-stayed bridge under construction in Boffa Province of Guinea as an example,the construction process of the cantilever assembly of the main girder of its middle span is analyzed,and the practical application of the stability analysis of the bridge structure in construction supervision is introduced.Through the simulation of different welding progress conditions,the first and second types of stability coefficients of the main girder structure under the long cantilever conditions are analyzed,and the minimum welding speed of structure without loss of stability to meet the specification is obtained,which guides the actual construction and clarifies the supervision objective.
出处
《城市道桥与防洪》
2020年第9期143-144,153,M0015,M0016,共5页
Urban Roads Bridges & Flood Control
关键词
稳定性
施工监控
斜拉桥
stability
construction supervision
cable-stayed bridge
