NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA 中华人民共和国国家标准 Code for Seismic Design of Buildings 建筑抗震设计规范 GB50011-2001 (英文版) Beijing 2001
NOTICE The code is written in Chinese and English.The Chinese text shall be taken as the rul ing one in the event of any inconsistency between the Chinese text and the English text
Notice of Promulgation for the National Standard “Code for Seismic Design of Buildings'” Document JB[2001]No.156 According to the requirements of "Notice of Printing and Distributing for the1997 Preparation and Revision Plan of Engineering Construction Standards'(Document JB[1997] No.108)-Ministry of Construction",that the"Code for Seismic Design of Buildings"has been revised by Ministry of Construction together with the relevant departments,after a joint examination of relevant departments,hence the new code has been approved as a na- tional standard with a serial number of GB50011-2001,and it shall come into force upon January1,2002.Herein,clauses1.0.2,1.0.4,3.1.1,3.1.3,3.3.1,3.3.2,3.4.1, 3.5.2,3.7.1,3.8.1,3.9.1,3.9.2,4.1.6,4.1.9,4.2.2,4.3.2,4.4.5,5.1.1, 5.1.3,5.1.4,5.1.6,5.2.5,5.4.1,5.4.2,6.1.2,6.3.3,6.3.8,6.4.3,7.1.2, 7.1.5,7.1.8,7.2.4,7.2.7,7.3.1,7.3.3,7.3.5,7.4.1,7.4.4,7.5.3,7.5.4 8.1.3,8.3.1,8.3.6,8.4.2,8.5.1,10.1.3,10.2.5,10.3.3,12.1.2,12.1.5 12.2.1 and 12.2.9 are compulsory provisions,which must be enforced strictly.The former "Code for Seismic Design of Buildings"GBJ 11-89 and the"Proclamation on Partial Revi- sion for National Standards of Engineering Construction"(No.1)shall be abolished after De- cember 31,2002 The Ministry of Construction is in charge of management and explanation of the mandatory clauses in the code,the China Academy of Building Research will be responsible for the explanation of specific technical contents and the Research Institute of Standards and Norms-Ministry of Construction will organize the China Architecture Building Press to take on publishing and distributing works of this code. Ministry of Construction of the People's Republic of China July20,2001
PREFACE The present code is the revised version of the former "Code for seismic design of build- ings"GBJ 11-89.The revision is undertaken by China Academy of Building Research (CABR)together with other institutions related to design,reconnaissance,research,and universities in accordance with the Document JB [1997]No.108 issued by the Ministry of Construction. During the process of revision,the editorial team carried out studies on specific topics and some laboratory tests concerned.Experiences and lessons,learned from damages in- duced by strong earthquake having occurred in recent years home and abroad,are summa rized,achievements of research in earthquake engineering are involved,the economic condi- tion and construction practices in China are taken into account,comments from all aspects of design,reconnaissance,research,education and municipal authorities are widely collected nation wide.Through a multi-round discussion,revision,substantiation,and with pilot de- signs as well,the final version has been completed and reviewed by an expert panel The newly updated version consists of 13 chapters and 11 appendixes.The major con- tents of the revision can be clarified by follows:the seismic fortification classification for buildings has been adjusted;the seismic design is required to be based on the design basic ac- celeration of the ground motion:the near-field and far-field earthquakes employed by the previous code have been replaced by the design earthquake groups;provisions related to the site classification,liquefaction identification,seismic influence coefficient and torsion effect calculation have been modified;requirements for the conception design of irregular building structures,the seismic analysis of structures,the limit of inter-story seismic shear force and deformation have been added;the seismic measures of masonry and concrete structures,and masonry buildings with bottom R.C.frames have been improved;more contents related to active fracture,pile foundation,R.C.tube structure,steel structure,reinforced hollow block masonry structure,and non-structural components,as well as the provisions for bas isolation and energy dissipation have been involved.In the meantime,the new code has ab- rogated some provisions dealing with inner-frame house and medium-sized block masonry structure,chimney and water tower,etc. The new code could be partly modified in the future.The relevant information and de- tails ofwill be published on the mg tion" Clauses marked with boldface type in this code are compulsory provisions and must be enforced strictly. The Institute of Earthquake Engineering of CABR is responsible for the interpretation of this code.Hopefully,in the process of its enforcement,all institutions may sum up and
accumulate their experiences in practice.Any comment and advice is welcome to submit to the Code Panel by the address:IEE,CABR,No.30,Bei San Huan Dong Road,Beijing 100013.(e-mail:ieecabr public3.bta.net.cn). Chief Editorial Unit:China Academy of Building Research(CABR) Participating units:Institute of Engineering Mechanics (IEM)of China Seismology Bureau;China Institute of Building Technology Research;Institute of Building Research of Ministry of Metallurgical Industry;Institute of Architecture Design of the Ministry of Con- struction;Institute of Project Planning and Research of the Ministry of Machinery Indus- try;China Institute of International Engineering Design of Light Industry;Institute of Ar- chitecture Design of Beijing:Institute of Architecture Design of Shanghai;Institute of Build. ing Design of Mid-southern China;Institute of Building Design and Research of North western China;Institute of Building Design and Research of Xinjiang Autonomous Region; Institute of Building Design and Research of Guangdong Province;Design Institute of Yun nan Province;Institute of Building Design and Research of Liaoning Province;Institute of Architecture Design of Shenzhen;Geological Reconnaissance Institute of Beijing;Institute of Building Design and Research of Shenzhen University;Qinghua University;Tongji Univer- sity;Harbin Building University:Science and Technology University of Mid China Chongging Building University;Yunnan Polytechnic University;Construction College of Southern China (West campus) Major draftsmen:Xu Zhenghong,Wang Yayong (The following is according to the Chinese phonetic alphabetically) Cai Yiyan,Chen Fusheng,Chen Jian,Dai Guoying,Dong Jincheng,Fan Xiaoqing, Fu Xueyi,Gao Xiaowang,Gong Sili,Hu Qingchang,Lai Ming,Li Guoqiang,Liu Hui shan,Lv Xilin,Ou Jinping,Pan Kaiyun,Qian Jiaru,Qin Quan,Rong Baisheng,Sha An, Su Jingyu,Sun Pingshan,Tang Jiaxiang,Wang Dimin,Wang Junsun,Wang Yanshen, Wei Chengji,Wu Mingshun,Xu Jian,Xu Yongji,Ye Liaoyuan,Yuan Jinxi,Zhang Qian- guo,Zhou Bingchang,Zhou Fulin,Zhou Xiyuan,Zhou Yongnian. Translated by:Liu Xiaoguang,Wan Lihua,Li Xiaoxia,Dai Guoying Proofread by:Dai Guoying,Wang Yayong