Truck platooning—digitally linking two or more trucks to travel in a closely spaced convoy—is an emerging technology with the potential to save fuel and reduce labor. A framework is described to determine how much a platoon permit load might be increased above Federal Bridge Formula B legal limits, given strict control over the load characteristics and operational tactics. Soon, platoons are expected to advance not only with respect to traffic operations but also in their ability to weigh and report axle weight and spacing, functioning as mobile weigh-in-motion vehicles. Consequently, platoon live load statistics (bias and coefficient of variation) can differ from code assumptions, and are perhaps controllable, which poses a significant opportunity with respect to operational strategies. A parametric study is presented that examined safe headways between platooning trucks, considering different girder spacings, span lengths, numbers of spans, types of structure, truck configurations, numbers of trucks, and adjacent lane loading scenarios. The Strength I limit state was evaluated for steel and prestressed concrete I-girder bridges optimally designed using load and resistance factor design. Reliability indices, β, were calculated for each load case based on Monte Carlo simulation. Summary headway guidance was developed and is presented here to illustrate potential safe operational strategies for varying truck weights and platoon live load effect uncertainties.

卡车编队——以数字方式将两辆或多辆卡车连接到一个紧密间隔的车队中——是一种新兴技术，具有节省燃料和减少劳动力的潜力。描述了一个框架，以确定在严格控制负载特性和操作策略的情况下，排许可负载可能会增加多少超过联邦桥梁公式 B 的法律限制。很快，预计排不仅会在交通运营方面取得进步，而且还会在称重和报告轴重和间距的能力方面取得进步，从而起到移动称重车辆的作用。因此，排活载统计数据（偏差和变异系数）可能与代码假设不同，并且可能是可控的，这为操作策略带来了重大机遇。提出了一项参数研究，该研究检查了排队卡车之间的安全车距，考虑了不同的梁间距、跨度长度、跨度数、结构类型、卡车配置、卡车数量和相邻车道装载情况。对于使用载荷和阻力系数设计优化设计的钢和预应力混凝土工字梁桥梁，强度 I 极限状态进行了评估。可靠性指标，β是基于蒙特卡罗模拟为每个负载情况计算的。制定并在此提出了总结前进指导，以说明针对不同卡车重量和排活载荷影响不确定性的潜在安全操作策略。