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美国的钢结构规范大约十年左右修订一次。这里介绍的是1978年11月生效的版本。它是在1969年版本的基础上修订的。与前一版相比,修改的主要方面有:1.拉杆设计应力的新规定;2.将机械紧固件(包括铆钉、螺栓、高强螺栓)的设计应力,进行了校核与修改;3.在钢-混凝土板的组合梁中增加了在压型钢板面上浇混凝土的组合梁;4.将疲劳设计进行了改进。为了便于与我国规范进行比较,本文采用的符号和编排,均力求与我国钢结构规范
The steel structure specifications in the United States are revised about once or so in about a decade. This is the version that came into effect in November 1978. It was revised on the basis of the 1969 version. Compared with the previous edition, the main aspects of the revision are: 1. New regulations for the design stress of tie rods; 2. The design stress of mechanical fasteners (including rivets, bolts, high-strength bolts) was checked and modified; 3 In the composite beam of steel-concrete slabs, a composite beam of concrete poured on the surface of the profiled steel plate was added; 4. The fatigue design was improved. In order to facilitate comparison with our country’s regulations, the symbols and layouts used in this paper are all in compliance with the specifications of China’s steel structure.