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根据建设部发布国家标准的通知要求,《混凝土结构设计规范》(GRJ10-89)、《建筑地基基础设计规范》(GBJ7-89)和《建筑抗震设计规范》(GBJ11-89)三项国家标准于1990年1月1日起正式执行。原国家标准《钢筋混凝土结构设计规范》(TJ10-74)、《工业与民用建筑地基基础设计规范》(TJ7-74)和《工业与民用建筑抗震设计规范》(TJ11-78)于1991年6月30日废止。自建设部通知发出以后,有关部门和地方设计单位反映,新发布的这三项规范采用了新的可靠性理论和概率极限状态设计方法,许多结构设计人员尚不熟悉,原有的设计手册和图表不便使用,需要根据新规范编制计算机程序和新的结构设计手册,因此,建议建设部延长旧规范的使用期限。为了保证设计质量,做好执行新规范的准备工作,建设部发出的建标[1991]245号文件作出了如下决定:
According to the notification requirements issued by the Ministry of Construction of the National Standard, the three national standards of “Code for Design of Concrete Structures” (GRJ10-89), “Code for Design of Foundations for Buildings” (GBJ7-89) and “Code for Seismic Design of Buildings” (GBJ11-89) Formally implemented on January 1, 1990. The original national standard “Code for Design of Reinforced Concrete Structures” (TJ10-74), “Code for Design of Foundations for Industrial and Civil Buildings” (TJ7-74) and “Code for Seismic Design of Industrial and Civil Buildings” (TJ11-78) in 1991 6 Repeal on the 30th. Since the notice of the Ministry of Construction was issued, the relevant departments and local design institutes reported that the newly issued three specifications adopted new reliability theories and probabilistic limit state design methods. Many structural designers are not yet familiar with the original design manuals. Inconvenient use of the charts requires the preparation of computer programs and new structural design manuals based on the new specifications. Therefore, it is recommended that the Ministry of Construction extend the use of the old specifications. In order to ensure the quality of design and make preparations for the implementation of the new regulations, the following document has made the following decisions in the document No. 221 issued by the Ministry of Construction: