FRP桥面板梁式桥动力性能的模拟分析  

Analysis of Dynamic Response of FRP Sandwich Deck Beam Bridges

作　　者：张铟[1,2] 郭诗惠[2] 

机构地区：[1]清华大学,北京100084 [2]南阳理工学院,南阳473004

出　　处：《科学技术与工程》2010年第20期4989-4993,共5页Science Technology and Engineering

基　　金：国家自然科学基金资助(50978151);河南省基础与前沿技术研究计划项目(082300440030)资助

摘　　要：分别以FRP桥面板钢梁桥和FRP桥面板预应力混凝土梁桥作为研究对象,车辆模型选用空间振动模型,桥梁模型采用模态坐标法,通过轮轨接触处位移和力的协调条件建立方程,运用MATLAB的求解函数,计算车过桥的连续时间历程的车-桥耦合振动问题,并与相同条件下的混凝土桥面板梁桥的动力性能进行了对比,同时考察了路面粗糙度及车辆行驶速度对桥梁动力响应的影响。FRP sandwich deck steel beam bridge and FRP sandwich deck prestressed concrete beam bridge are respectively took as the objects of study.The vehicle model selected the space vibration model,and the bridge model used the mode coordinate method.Equations are established through the coordinated condition of displacement and force on wheel-track contact spot,then it calculated the continuous-time course vehicle-bridge coupled oscillation question of vehicle crossing the bridge.The dynamic performance of bridges is compared between the FRP deck beam bridges and the corresponding concrete deck beam bridges.The dynamic response of bridges is obtained considering the influence of road roughness as well as vehicle velocity.

关 键 词：桥梁工程 玻璃钢强化塑料(Fiberglass Reinforced Plastics FRP) 桥面板 数值分析 梁式桥 动力性能 

分 类 号：U443.32[建筑科学—桥梁与隧道工程]