【摘要】 本文对山东省东营胜利大桥跨度为30m的简支预应力混凝土引桥进行了桥梁动载试验,探讨车辆行驶速度和桥面不平对桥梁动态增量的影响。试验车辆为满载的STEYR-1491型载重车辆,并在胜利油田汽车测试中心对试验车辆进行了静、动态特性试验。在试验的基础上,本文建立了桥梁-车辆相互作用的力学模型,应用数值分析的方法计算胜利大桥引桥的动态增量,计算结果与实测结果比较吻合。更多还原

【Abstract】 This paper mainly deals with the effects of passage velocity of vehicle and roughness of bridge deck on the dynamic increments of bridge response under the action of traffic loads, Field tests are carried out on a simply supported prestressed concrete bridge approach in Shandong Province, China. The vehicle used is a fully loaded truck of Model STEYR-1491, and the static and dynamic properties of the vehicle have been tested, On the basis of experimental results, a mechanical model is set up for analysing the bridge-vehicle interactions and a numerical method is developed to calculate the dynamic increment. Theoretical results are in good agreement with the field measurements.更多还原