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首页> 外文会议>Transportation Research Circular no.E-C104; TRB(Transportation Research Board) Annual Meeting; 200601; Washington,DC(US) >Evolution of Vehicular Live Load Models During the Interstate Design Era and Beyond
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Evolution of Vehicular Live Load Models During the Interstate Design Era and Beyond

机译：州际设计时代及以后的车辆活载模型的演变

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摘要

This paper reviews the evolution of live load design models for bridges and associated design specification provisions before, during and after the Interstate era, taken as the last 80 years. The types of vehicles on the roads are evaluated and comparisons are made to force effects generated by standard AASHTO design loadings. The introduction of the Federal Bridge Formula is reviewed and a comparison is made to the standard AASHTO HS20 design vehicle used throughout most of the Interstate period. The change in legal loads as well as extra legal loads are reviewed and the implication of the exclusion to the legal load limit made in various states are reviewed and compared to the HS20 loading. The basis for periodic changes to the live load design models, load distribution, and impact is also reviewed. Finally, a brief summary of the development of the post-interstate era live load model, the HL93 loading in the AASHTO LRFD Specifications, is also presented.
机译：本文回顾了跨州时代（过去80年）之前，期间和之后的桥梁活载设计模型的演变以及相关的设计规范规定。对道路上的车辆类型进行评估，并进行比较以比较标准AASHTO设计载荷产生的作用力。审查了联邦桥梁公式的引入，并与整个州际期间使用的标准AASHTO HS20设计工具进行了比较。审查法律负载的变化以及额外的法律负载，并审查排除在各个州做出的法律负载限制的含义，并将其与HS20负载进行比较。还回顾了定期更改活动荷载设计模型，荷载分布和影响的基础。最后，对AASHTO LRFD规范中的HL93跨州时代​​后实时荷载模型的开发进行了简要总结。

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