基于动静载试验的大跨径自锚式悬索桥力学性能分析  

Mechanical Performance Analysis of Large-span Self-anchored Suspension Bridges Based on Dynamic and Static Load Tests

作　　者：钟日坚 ZHONG Rijian(Dongguan Jiaoye Engineering Quality Inspection Co.,Ltd.,Dongguan 523000,Guangdong,China)

机构地区：[1]东莞市交业工程质量检测有限公司,广东东莞523000

出　　处：《工程技术研究》2023年第16期1-5,共5页Engineering and Technological Research

摘　　要：为了评估大跨径自锚式悬索桥结构受力状态和承载能力,文章基于有限元方法建立了成桥实体结构的空间全尺寸模型,计算了成桥结构在动静荷载作用下力学性能参数理论值,通过静载试验、无障碍行车试验和脉动试验监测了实际工况下成桥结构在动态荷载和静态荷载作用下的力学性能参数。研究表明,该桥在不同工况下的变形、应力和应变等力学性能参数的实测值与理论值吻合良好,且静态荷载下的校验系数和卸载残余比值均满足设计要求。动态荷载试验结果表明该桥在正常工作状态下的动态力学性能一般,基本满足正常使用荷载的要求。In order to evaluate the stress state and bearing capacity of the large-span self-anchored suspension bridge,a full-scale spatial model of the completed bridge structure is established based on the finite element method.The theoretical values of the mechanical performance parameters of the completed bridge structure under dynamic and static loads are calculated.The mechanical performance parameters of the completed bridge structure under dynamic and static loads under actual working conditions are monitored by static load test,barrier-free driving test and pulsation test.The research shows that the measured values of mechanical performance parameters such as deformation,stress and strain of the bridge under different working conditions are in good agreement with the theoretical values,and the calibration coefficient and unloading residual ratio under static load meet the design requirements.The results of dynamic load test show that the dynamic mechanical performance of the bridge under normal working conditionsis average, which basically meet the requirements of normaluse load.

关 键 词：大跨径 自锚式悬索桥 动静载试验 力学性能 

分 类 号：U446.1[建筑科学—桥梁与隧道工程]