The principles and framework of the full-text mandatory code General code for engineering structures(GB 55001-2021)were described,focusing on the critical provisions in it.This code should be regarded as technical regulations and the ＂ top-level code＂ for all types of engineering structures.It makes the provisions of minimum requirements in civil engineering and provides the compliance criteria for innovative technical methods and measures.The code raises the requirement of some floor and roof live loads,and supplements and revises the provisions for construction loads and railing loads.It stipulates that the snow load adjustment coefficient should not be less than 0.9 when considering the favorable effect of wind,and the requirement for icing loads is also given.The amplification factor of the wind load for main wind-force resisting system should not be less than 1.2,which is applicable for all engineering structures.The wind directionality factors for wind load is introduced in the code and its value should not be less than 0.8,corresponding to the factor for wind speed should not be less than 0.894.
关键词
通用规范/全文强制标准/技术法规/编制原则/重点条文
Key words
general code/full-text mandatory code/technical regulation/compiling principle/critical provision
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