在役矮塔斜拉桥主梁结构承载性能分析  

Analysis of the Bearing Performance of the Main Beam Structure of the in-service Low Tower Cable-stayed Bridge

作　　者：袁和旭 Yuan Hexu(China Railway Inter-city Planning and Construction Co.,Ltd.Anhui Branch,Anhui,Hefei 230000)

机构地区：[1]中铁城际规划建设有限公司安徽分公司,安徽合肥230000

出　　处：《现代工程科技》2024年第3期29-32,共4页Modern Engineering Technology

基　　金：国家自然科学基金项目(201361235636);湖北省科技支撑计划软科学项目(2013AKB12)。

摘　　要：矮塔斜拉桥具有纤细、优美的美学特征,同时可进行灵活的跨径布置,已成为中大跨径桥型的有力竞争者。对于在役矮塔斜拉桥,主梁承载特性是影响其结构安全的主要因素,开展桥梁主梁结构承载力研究对合理评价矮塔斜拉桥服役性能具有重要意义。为此,以某在役矮塔斜拉桥为例,基于桥梁检测结果,通过数值模拟方法建立了矮塔斜拉桥结构有限元模型,并从主梁抗弯、抗剪、抗裂角度研究了在役桥梁主梁结构的承载性能。期望研究成果能为类似桥梁的安全评价提供参考。The low tower cable-stayed bridge has slender and beautiful aesthetic characteristics,and can be flexibly arranged with spans,making it a strong competitor for medium to large span bridge types.For in-service low tower cable-stayed bridges,the loadbearing characteristics of the main beam are the main factor affecting their structural safety.Conducting research on the load-bearing capacity of the bridge main beam structure is of great significance for evaluating the service performance of low tower cable-stayed bridges in a reasonable manner.To this end,based on the results of bridge inspection,a finite element model of a low tower cablestayed bridge structure was established through numerical simulation using a certain in-service low tower cable-stayed bridge as the project support.The load-bearing performance of the main beam structure of the in-service bridge was studied from the perspectives of bending,shear,and crack resistance.The research results can provide scientific reference for the safety evaluation of similar bridges.

关 键 词：矮塔斜拉桥 主梁 承载性能 数值模拟 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]