摘要
针对常见公路简支梁桥跨径范围,系统分析了中美公路超重车辆认定标准的差异。根据我国和美国现行公路超重车辆认定标准,选择合适的典型限载车辆荷载模型。以6-30 m简支梁桥为例,计算了中美各典型车辆荷载模型产生的跨中弯矩和支点剪力。通过比较不同典型车辆产生的荷载效应,分析了中美公路超重车辆认定标准的差异程度。
According to the common span of simply supported bridge, the paper analyzes the differences of overweight vehicle identification standard between China and America systematically. The paper selects the typical bridge truck weight limit model based on the present highway overweight vehicle standard of china and Ame - rica. Taking the 6m - 30m simply supported beam bridge as example, calculates the mid - span moment and fulcrum shear of all kinds of typical bridge truck weight limit model. Through the comparison of load effect gen - crated by different typical vehicles, the degree of vari -ante of the highway overweight vehicle identification standard hetween China and America is analyzed.
关键词
公路桥梁
超重车辆
认定标准
荷载模型
荷载效应
highway bridges
overweight vehicle
identification standards
load model
load effect
