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首页> 外文期刊>Journal of bridge engineering >Load Configuration and Lateral Distribution of NATO Wheeled Military Trucks for Steel I-Girder Bridges
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Load Configuration and Lateral Distribution of NATO Wheeled Military Trucks for Steel I-Girder Bridges

机译:钢制I型梁桥的北约轮式军用卡车的载荷配置和横向分布

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摘要

This paper presents the lateral load distribution of various North Atlantic Treaty Organization (NATO) wheeled military trucks on a simple-span steel I-girder bridge (L=36 m). The military trucks are classified into the military load classification (MLC) system. The MLC trucks demonstrate different load configurations when compared to the standard HS20 truck in terms of wheel-line spacing, number of axles, and weight. A calibrated three-dimensional finite-element analysis is conducted to examine the MLC load effects. The applicability of the AASHTO LRFD provisions is evaluated using 72 different load models. The wheel-line spacing and weight of the MLC trucks cause different flexural behavior and load distributions of the bridge when compared to those of HS20. The current AASHTO LRFD approach to determine live load distribution factors may be reasonably applicable to the MLC trucks, including approximately 20% of conservative predictions.
机译:本文介绍了北跨条约组织(NATO)轮式军用卡车在简单跨度的钢制I型梁桥(L = 36 m)上的横向载荷分布。军用卡车被分类为军用载荷分类(MLC)系统。与标准HS20卡车相比,MLC卡车在轮距,轴数和重量方面表现出不同的负载配置。进行了校准的三维有限元分析,以检查MLC载荷效应。 AASHTO LRFD规定的适用性使用72种不同的负荷模型进行评估。与HS20相比,MLC卡车的轮距和重量会引起桥的不同挠曲行为和载荷分布。当前的AASHTO LRFD确定活动载荷分配因子的方法可能合理地适用于MLC卡车,包括大约20%的保守预测。

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