美国超重车特性统计及作用效应计算研究

发布时间：2018-06-06 10:26

  本文选题：公路桥梁 + 超重车　； 参考：《中外公路》2017年05期

【摘要】：超载现象的普遍存在给桥梁结构带来了极大的安全隐患。为获取重型交通荷载特性以及重车过桥全过程造成的荷载效应,收集了美国加州3座桥梁WIM数据,根据美国联邦政府规定对超重车辆进行分类,统计分析车辆类型及荷载构成特点。基于随机过程理论提出了多车道车辆并行荷载效应计算模型,计算其中第Ⅱ类超重车产生的叠加荷载效应,并与中美现行桥梁设计规范值进行对比。研究结果表明:第Ⅱ类超重车引起的荷载效应较规范值大1.5~2.0倍,且跨长越长,重车并行叠加荷载效应越突出。
[Abstract]:The overloading phenomenon brings great hidden danger to the bridge structure. In order to obtain the load characteristics of heavy traffic and the load effect caused by the whole process of heavy vehicle crossing, the WIM data of three bridges in California were collected, and the overweight vehicles were classified according to the regulations of the United States Federal Government. The characteristics of vehicle type and load composition are analyzed statistically. Based on the stochastic process theory, a parallel load effect calculation model for multi-lane vehicles is proposed. The superposition load effect caused by class 鈪，

本文编号：1986206