桥梁超重荷载分析与限载标准确定  

Analysis of Overload and Determination of Limiting Load Standard for Bridges

作　　者：宗雪梅[1,2] 胡大琳[1] 

机构地区：[1]长安大学桥梁与隧道陕西省重点实验室,西安710064 [2]西安市市政设计研究院,710068

出　　处：《特种结构》2008年第4期67-72,共6页Special Structures

基　　金：科技部中国-南非科技交流基金(01-503J);陕西省交通科技基金项目(03-23K).

摘　　要：以陕西府店路运煤超重车辆为调查对象,由车辆载重特点和轴型分布特征将其分为9种类型;分析了此9种车辆模型超载超限情况。利用线性回归方法,得出超载与超限的函数关系,分析了二者的区别与内在联系;对道路桥梁上的超重车辆荷载,提出限载管理措施。利用等代荷载方法,与公路-Ⅰ级荷载相比较,确定出9种车型的限载系数和限载标准,评价了限载后车辆荷载特性,得出了车辆限载后提倡使用多轮、多轴的车型来装运的结论,为未来道路桥梁超重荷载管理、交通运输与路政管理提供理论依据与支持。Overloading of highway in Shanxi is investigated in this paper. The vehicles are divided into 9 kinds according to their loading feature and axle types. Situation of overloading and utmost load is researched for these 9 kinds models, and their funetional relation is drawn out by the method of linear regression. Furthermore, the difference and intrinsic relation is analyzed between the vehicles of overloading and utmost load. The paper puts forward managing measure of limiting load for heavy vehicles over bridges. The equivalent load of vehicle models are compared with highway-I load standard, concluding limiting load coefficient and standard of 9 kinds models, evaluating vehicle load character after being limited, drawing the conclusion of that multi-wheel and multi-axle vehicles should be used in transportation after being limited. All this provides references and supports to overloading management , transportation and communication, route management on the highway and bridges in the future.

关 键 词：超重车辆 超载 超限 线性回归 限载标准 

分 类 号：U441.2[建筑科学—桥梁与隧道工程] U414.18[交通运输工程—道路与铁道工程]