FRP桥面板梁式桥动力性能的模拟分析

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.

Analysis of Dynamic Response of FRP Sandwich Deck beam Bridges

This paper respectively took FRP sandwich deck steel beam bridge and FRP sandwich deck prestressed concrete beam bridge as the objects of study, the vehicle model selected the space vibration model, and the bridge model used the mode coordinate method. The paper established equations 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 was compared between the FRP deck beam bridges and the corresponding concrete deck beam bridges. The dynamic response of bridges was obtained considering the influence of road roughness as well as vehicle velocity.