摘要
采用ANSYS和ETABS两种软件建立富山赣江特大桥有限元模型。运用MATLAB软件编写了车桥耦合振动求解程序,分析车速、路面等级两个因素对大跨波形钢腹板连续箱梁桥的动力响应和动力冲击系数影响,并将计算结果与现行规范计算值进行对比分析。研究结果表明:车速对于大跨波形钢腹板连续箱梁桥冲击系数的影响较复杂,冲击系数并不是随着速度增大而线性增大;路面状况越差,路面等级对桥梁冲击系数的影响较车速更明显;对于多跨波形钢腹板连续箱梁桥,相同车速及路面等级,不同主跨的冲击系数大小不同。在设计该类桥型时,建议采用主跨的最大冲击系数。
The ANSYS and the ETABS were adopted to establish finite element model for the Ganjiang bridge inFushan in this paper. The program compiled by MATLAB was applied to solve the dynamic equation of vehiclebridge coupling. The dynamic response and dynamic impact coefficient of large span continuous box girderbridge with corrugated steel webs under the action of vehicle speed and pavement serviceability were analyzed,and the obtained results were compared with the calculated value in accordance with the current codes. The re-search results show that the effect of vehicle speed on the impact coefficient of large span continuous box girderbridge with corrugated steel webs is complex, and the impact coefficient does not increase linearly with the in-crease of velocity. Besides, the worse the pavement condition is, the more obvious the influence of pavement ser-viceability on impact coefficient of bridge is. For the multi-span continuous box girder bridge with corrugatedsteel webs, as the vehicle speed and pavement serviceability remain unchanged, the impact coefficients of differ-ent main spans are different. It is suggested that the maximum impact coefficient of main span should be used todesign this type of bridge.
作者
陈水生
付仂
桂水荣
Chen Shuisheng;Fu Le;Gui Shuirong(School of Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;CCECC Fuzhou Survey and Design Institnte Co.,Ltd.,Fuzhou 350013,China)
出处
《华东交通大学学报》
2018年第5期27-34,共8页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51468018
50868007)
关键词
富山赣江特大桥
大跨度
波形钢腹板
车桥耦合
动力冲击系数
Ganjiang bridge in Fushan
large span
corrugated steel web
vehicle-bridge coupling
dynamic im-pact coefficient
