American association of state highway and transportation officials 美国州公路及运输协会
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Highways and transportation officials 美国各州公路及运输公务员协会
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A practical optimization approach to the design of reinforced concrete deck - girder highway bridge is presented in this paper . the approach is entirely based on the american association of state highway and transportation officials ( aashto ) standard specifications for highway bridges 本文提出一种钢筋混凝土板梁式公路桥梁的实用优化设计方法，该方法基于“美国国家高速公路和交通运输协会” 《公路桥梁设计规范》 ( aashto1996 ) 。
