龙凤桥T梁拆除施工关键技术

KEY TECHNOLOGY OF T-BEAM DEMOLITION CONSTRUCTION OF LONGFENG BRIDGE

城市桥梁改扩建过程中,旧桥拆除是一项重要的内容,其过程涉及桥上保通和桥下通航。正确的拆除方式是在确保各方面安全的前提下,既经济合理又能提高工程的进度。拆除之前首先需要做施工准备,然后针对各部件制订拆除方案,最后还要考虑拆除时桥下的通航方案。以嘉兴市快速路高架桥改扩建过程中龙凤桥拆除为例,介绍大跨径简支梁桥拆除施工技术,为今后类似桥梁拆除提供参考。

In the process of urban bridge reconstruction and expansion, the demolition of the old bridge is an important content, and the demolition process involves the bridge protection and the bridge navigation. On the premise of ensuring the safety of all aspects, the correct demolition can not only improve economic rationality and improve the progress of the project. Before demolition, construction preparation needs to be made, then the demolition plan for each component, and finally consider the navigation plan under the bridge. Taking the demolition of Longfeng Bridge in the reconstruction and expansion process of Jiaxing Expressway viaduct as an example, the demolition and construction technology of large-span simple branch beam bridge is introduced to provide reference for the demolition of similar bridges in future.