基于数值模拟的空心梁板桥梁整体性快速检测方法分析及工程实例应用

Analysis on Rapid Detection Method of Integrity of Hollow Beam and Slab Bridges and the Application of Engineering Examples Based on Numerical Simulation

目前空心梁板已成为中小型桥梁结构型式的主要选择,在这一背景下,本文采用基于横向分布影响线的空心板梁桥横向整体性检测方法,通过建立三维数学模型,模拟集中应力在桥梁横向移动作用过程,通过分析荷载移动过程中两侧边板相对位移差值判断桥梁结构损伤。同时,本文以广东某小型公路实例桥梁为研究对象,采用本文建立的方法快速对其桥梁整体性能进行了判断分析。本文采用方法可为提高桥梁整体性能检测效率、节约检测费用提供参考与借鉴。

The hollow beam slab has become the main choice of small and medium-sized bridge structure. Under this background, this paper adopts slabs bridge transverse integrity detection method based on the influence line of transverse distribution, simulates the bridge lateral movement process of stress concentration by establishing a three dimensional mathematical model, and judges the bridge structure damage through analyzing the relative displacement difference of two side plates in load moving process. At the same time, this paper takes a small highway bridge in Guangdong as the research object, and uses the method established in this paper to quickly judge and analyze the overall performance of the bridge. The method can be used as a reference to improve the efficiency of bridge performance testing and save testing cost.