中、美规范平面纯框架二阶分析方法的对比

Comparison the Second Order Analysis Approach of the Plane Unbraced Frame between Chinese and American Design Specifications

钢框架的结构分析是钢结构设计中的基本问题,对于该类结构的分析应该考虑二阶效应的影响。目前,已有许多国家把二阶效应纳入了钢结构的设计规范。中国《钢结构设计规范》(GB 50017—2003)与美国钢结构规范《ANSI/AISC 360—05An American National Standard Specification for Structural Steel Buildings》在平面纯框架结构的二阶分析计算上存在着一定的差异,对两者的计算分析方法和具体系数进行分析比较。

The structural analysis of steel frame is a fundamental problem in the design of steel structural which should take the second order effects into account. Now many countries have brought the second order effects into their steel structural specifications. There are many differences in the calculation and analysis of second order effects between the Chinese ＂Code for Design of Steel Structure＂ （ GB 50017-2003 ） and the American steel structural specification （ANSI/AISC 360-05 An American National Standard Specification for Structural Steel Buildings）. The calculation and analysis methods and specific coefficients between the two design specifications are compared.