本注解是对美国土木工程学会的“桥梁建议荷载”的解释。它扼要地阐明了专业委员会采纳建议荷载的理由,对有关条文的依据与考虑、依据的可靠程度和有关研究的深度、新规定的理论与实用说明、与各国现行规范的比较以及在设计荷载方面有待进一步研究的课题等各方面作了必要的说明。此解释对于正确理解与使用“桥梁建议设计荷载”以及设计荷载的研究工作均甚有俾益。 This note is an explanation of the “Bridge Proposed Load” of the American Society of Civil Engineering. It provides a concise summary of the rationale for the Ad Hoc Committee to adopt the proposed load, the basis and consideration of the relevant provisions, the reliability of the basis and the depth of the study, the theoretical and practical indications of the new provisions, comparisons with existing national norms and the design load The topics to be further studied and other aspects made the necessary explanations. This interpretation is of great benefit to the proper understanding and use of the “proposed design load of bridges” and the research on design loads.