东北路拓宽改造门式刚构拖拉施工研究

Research on the Portal Rigid Structure Drag Construction in the Northeast Road Widening and Reconstruction Project

为解决既有桥梁改建过程中,施工对交通行车和桥下管网的影响问题,本文对传统的框构桥顶进法进行改进,提出门式刚构拖拉法。结合大连市东北路拓宽改造工程,对所提工法的工艺原理和流程进行了介绍,并对该工法在施工过程中的操作重点和难点进行了分析。

In order to solve the problem of the influence of construction on traffic and bridge pipe network during the reconstruction process of existing bridges, this paper improves the traditional frame structure bridge jacking method and proposes the portal rigid frame drag method. Combined with the widening and reconstruction project of the northeast road in Dalian, the process principle and process of the proposed method are introduced, and the operation focus and difficulties of the construction method in the construction process are analyzed.