门式刚架设计问题探讨

Discussion on Design of Portal Frame

《工程结构通用规范》于2022年1月1日实施,其中,对不上人屋面活荷载的规定相对《建筑结构荷载规范》GB5009-2012第5.3.1条有所变动,以实际案例分析本条修改对门式刚架设计的影响。《门式刚架轻型房屋钢结构技术规范》(GB 51022—2015)(简称新门规)于2016年8月1日开始实施,《门式刚架轻型房屋钢结构技术规程》(CECS 102:2002)(简称旧门规)同时作废,门刚新规范在原有规程基础上作出了较大改动,因此对有关问题进行探讨,以实际案例为例,分析新规范对门式刚架设计的影响。

The“General Code for Engineering Structures”was implemented on January 1,2022,in which the provisions on the live load of inaccessible roof are changed compared with Article 5.3.1 of the“Load Code for Building Structures”GB5009-2012.The impact of this modification on the design of portal frame is analyzed with practical cases.“The Technical Code for Steel Structures of Light-weight Buildings with Gabled Frames”(GB51022-2015)(hereinafter referred to as the new door code)was implemented on August 1,2016,and the“Technical Code for Steel Structures of Light-weight Buildings with Gabled Frames”(CECS 102:2002)(hereinafter referred to as the old door code)was invalidated at the same time.The new door code has made great changes on the basis of the original regulations.Therefore,relevant problems are discussed,taking actual cases as examples,the influence of the new code on the design of portal frame is analyzed.