基于层次分析法的连续梁桥倒拆拆除结构状态评定

Evaluation of Structural State of Continuous Beam Bridge in Reverse Demolition Based on Analytic Hierarchy Process

摘要:

以上海某大泖港桥为背景， 针对变截面混凝土连续梁悬臂倒拆拆除进行拆除前检测和评估研究。建立基于层次分析法的待拆混凝土连续梁桥倒拆拆除技术状况评定体系。通过建立层次结构模型并进行评估模型中的权重研究，确定综合评定方法， 并应用该评估体系评定本桥的拆除技术状况。此评估体系对悬臂机械切割倒拆拆除的结构状态评定具有一定的指导意义。

Abstract:

Based on a bridge in Damaogang of Shanghai, the cantilever reverse demolition of variable cross-section concrete continuous beam is detected, evaluated and studied before demolition. The evaluation system for the technical condition of reverse demolition of concrete continuous beam bridge to be dismantled based on analytic hierarchy process (AHP) is established. Through the establishment of the hierarchical structure model and the evaluation of weight research in model, the comprehensive assessment method is determined. And this evaluation system is used to assess the dismantling technical condition of this bridge. The evaluation system has a certain guiding significance for the evaluation of the structure state of the cantilever mechanical cutting and reverse demolition.