基于动静参数联合反演技术快速评定桥梁承载能力  

Rapid Evaluation of Bridge Bearing Capacity Based on Joint Inversion of Dynamic and Static Parameters

作　　者：张献民[1] 金喜莎 李少波 高燕[1] 

机构地区：[1]中国民航大学机场学院,天津300300 [2]邢台交通运输局,河北邢台054000

出　　处：《公路交通科技》2015年第2期74-80,107,共8页Journal of Highway and Transportation Research and Development

基　　金：河北省交通科学基金(Y-20122033);中央高校基本科研业务费项目(20001947SY1434)

摘　　要：结合结构的设计资料,建立结构的初始有限元模型。通过现场实测获得桥梁结构的动力参数和拟静力应变影响线,将其作为模型修正依据,利用有限元修正技术,反演桥梁结构的实际力学模型。通过该模型可仿真现场静载试验,实现对桥梁结构力学性能的快速评定。实际应用结果表明:应用动静参数联合反演得到的桥梁结构的力学模型能够客观地反映桥梁的实际力学性能,可实现对桥梁结构的快速仿真分析。The initial finite element model of the structure is built according to the structure design information. Regarding the measured dynamic parameters and quasi static strain influence line of the bridge as the basis of model updating, utilizing the FE updating technology, the actual mechanical model of the bridge is inversed. The field static loading test can be simulated by the model to rapidly evaluate the mechanical property of the bridge. The application result shows that the mechanical model of the bridge structure inversed by joint inversion of dynamic and static parameters can reflect the actual mechanical property of the bridge objectively, so this method call achieve the goal of simulating bridge structure rapidly.

关 键 词：桥梁工程 桥梁结构 联合反演 承载能力 模型修正 仿真加载 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]