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Truck load modeling for reliability based code calibration

机译：卡车载荷建模，用于基于可靠性的代码校准

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A number of civil engineering practice specifications have been advanced to be reliability based. They include the LRFD Bridge Design Specifications and the Manual for Bridge Evaluation in the US issued by the American Association of State Highway and Transportation Officials (AASHTO). An important feature substantiating the reliability concept in these codes is the accordingly calibrated truck load models and live load factors. On the other hand, the reliability based calibration process then used very limited truck weight data gathered in Canada. It has been three decades or so from then and a much larger amount of truck weight data has been made available since then. Research work is reported here using much more statistically significant truck weight data from many weigh-in-motion stations in the US collected in recent years. More rigorous statistical analysis and projection are thereby made possible and are applied on these data to examine the assumptions used in the calibration process of the AASHTO codes. It was found that many of these assumptions are actually not valid. Application cases of code calibration are also reported in this paper.
机译：许多土木工程实践规范已经发展成为基于可靠性的规范。它们包括LRFD桥梁设计规范和美国国家公路和运输官员协会（AASHTO）在美国发行的桥梁评估手册。在这些规范中证实可靠性概念的一个重要特征是相应校准的卡车负载模型和有效负载系数。另一方面，基于可靠性的校准过程随后使用了加拿大收集的非常有限的卡车重量数据。从那时起已经过去了大约三十年，自那时以来，已经有大量的卡车重量数据可供使用。据报道，这项研究工作是使用近年来从美国许多动态称重站收集到的，具有统计意义的，更重要的卡车重量数据得出的。这样就可以进行更严格的统计分析和预测，并将其应用于这些数据，以检查在AASHTO代码的校准过程中使用的假设。已经发现许多这些假设实际上是无效的。本文还报告了代码校准的应用案例。

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