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1.引言 本文规定的荷载是美国土木工程学会(A-SCE)桥梁荷载与外力委员会对作用在桥上的各种影响力作出的最佳估计。有些情况,他们
1. INTRODUCTION The loads specified in this document are the best estimates of the various influences exerted on a bridge by the A-SCE Bridge Load and Extremity Committee. In some cases, they