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GB 51004-2015 PDF in English


GB 51004-2015 (GB51004-2015) PDF English
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GB 51004-2015: PDF in English

UDC NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA Code for Construction of Building Foundation Engineering ISSUED ON. MARCH 8, 2015 IMPLEMENTED ON. NOVEMBER 1, 2015 Jointly Issued by the Ministry of Housing and Urban-Rural Development of the People's Republic of China and the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China GB NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA Code for Construction of Building Foundation Engineering Chief Development Department. Ministry of Housing and Urban-Rural Development of the People's Republic of China Approving Department. Ministry of Housing and Urban-Rural Development of the People's Republic of China Implementation Date. November 1, 2015 Beijing 2015 Announcement of the Ministry of Housing and Urban-Rural Development of the People's Republic of China No.782 Announcement of the Ministry of Housing and Urban-Rural Development on Publishing the National Standard "Code for Construction of Building Foundation Engineering" "Code for Construction of Building Foundation Engineering" has been approved as a national standard with a serial number of GB 51004-2015 and shall be implemented from November 1, 2015. Articles 5.5.8, 5.11.4, 6.1.3 and 6.9.8 are compulsory and must be enforced strictly. Authorized by the Standard Rating Research Institute of the Ministry of Housing and Urban-Rural Development of the People's Republic of China, this standard is published by China Planning Press. Ministry of Housing and Urban-Rural Development of the People's Republic of China March 8, 2015 Foreword As required by the Ministry of Housing and Urban-Rural Development in the "Notice on Printing 'Development and Revision Plan for National Engineering Construction Standards and Codes in 2009' (Jian Biao [2009] No.88), this code is prepared by the code drafting group via conducting extensive investigation and carefully summarizing practical experiences, by reference to relevant international standards and foreign advanced standards as well as on the basis of widely soliciting for opinions. This code consists of 10 chapters and the main technical contents cover general provisions, terms, basic requirements, ground construction, foundation construction, shoring construction of foundation pit, groundwater control, construction of earthwork, slope construction as well as safe and green construction. In this code, the provision(s) printed in bold type is (are) compulsory one(s), and must be enforced strictly. Ministry of Housing and Urban-Rural Development is in charge of the administration of this code and the explanation of the compulsory provisions; Shanghai Construction Group Co., Ltd. is in charge of the explanation of specific technical contents. During the process of implementing this code, any comments or suggestions, whenever necessary, can be passed or posted to Shanghai Construction Group Co., Ltd. (address. No.666, East Broadway Road, Shanghai; post code. 200080) for reference in future revision. Chief development organizations, participating development organizations, chief drafters and chief examiners of this code. Chief development organizations. Shanghai Construction Group Co., Ltd. Shanghai Foundation Engineering Group Co., Ltd. Participating development organizations. China Academy of Building Research Shanghai Construction No.1 (Group) Co., Ltd. Shanghai Construction No.4 (Group) Co., Ltd. Shanghai Mechanized Construction Group Co., Ltd. Guangdong Foundation Engineering Group Co., Ltd. Shanghai Xian Dai Architectural Design (Group) Co., Ltd. Shanghai Geotechnical Investigations & Design Institute Co., Ltd. Tongji University Yunnan Construction Engineering Group Corporation Shaanxi Construction Engineering Group Corporation Liaoning Construction Engineering Group Co., Ltd. Xinjiang Beixin Road & Bridge Construction Co., Ltd. Xinjiang Bing Tuan Construction Engineering (Group) Co., Ltd. Chief drafters. Fan Qingguo Li Yaoliang Yuan Fen Ge Zhaoyuan Gao Wensheng Zhong Xianqi Zhu Yimin Qiu Xihong Zhu Jun Gao Chengyong Gu Guorong Ye Guanbao Zhu Jianming Wang Weidong Liu Hongming Gan Yonghui Xu Anjun Xue Yongwu Liu Jiaweng Zhu Jianguo Wang Lixiang Jiang Xialing Liang Zhirong Xu Feng Liu Shannan Liang Fayun Li Cunliang Shao Mengxin Teng Xin Luo Xin Gu Yang Huang Qiuliang Zhang Gang Cheng Hui Ping Yuzhu Wang Zhimin Chen Heng Wang Jianjiang Zhang Zhijian Fan Jiming Hua Yan Chen Gang Xiong Baoheng Xing Li Chen Rongkai Han Zhengping Chief examiners. Ye Keming Zhang Yan Zhong Dongbo Zheng Xiangbin Gu Qianyan Wu Houxin Xu Guomin Ren Shuhua Ge Wenzhi Contents 1 General Provisions ... 1 2 Terms ... 1 3 Basic Requirements ... 3 4 Ground Construction ... 4 4.1 General Requirements ... 4 4.2 Soil and Lime-soil Foundation... 5 4.3 Sand and Sandstone Foundation ... 6 4.4 Flyash Foundation ... 6 4.5 Dynamic Consolidation Foundation ... 7 4.6 Grouting Consolidated Foundation ... 9 4.7 Preloading Foundation ... 10 4.8 Vibration Impact Foundation ... 12 4.9 High Pressure Jet Grouting Foundation ... 13 4.10 Soil-cement Mixed Pile Foundation ... 14 4.11 Soil-lime Compacted Column Composite Foundation ... 15 4.12 Cement Flyash Gravel Pile Composite Foundation ... 16 4.13 Tamping Soil-cement Pile Composite Foundation ... 18 4.14 Sandstone Column Composite Foundation ... 18 4.15 Foundation on Collapsible Loess ... 20 4.16 Foundation on Frozen Soil ... 22 4.17 Foundation on Expansive Soil ... 22 5 Foundation Construction ... 23 5.1 General Requirements ... 23 5.2 Non-reinforced Spread Foundation ... 23 5.3 Reinforced Concrete Spread Foundation ... 24 5.4 Raft and Box Foundation ... 25 5.5 Reinforced Concrete Precast Pile ... 27 5.6 Cast-in-situ Pile with Slurry Protection Wall ... 31 5.7 Press-grouting Concrete Pile Drilled by Long Spiral ... 38 5.8 Tube-sinking Cast-in-situ Pile ... 38 5.9 Dry Drilling Cast-in-situ Pile ... 40 5.10 Steel Pile ... 41 5.11 Anchor Pile ... 44 5.12 Foundation on Rock-anchor System ... 45 5.13 Sunk Well and Caisson ... 47 6 Construction of Foundation Pit Retaining ... 48 6.1 General Requirements ... 48 6.2 Contiguous Bored Pile Wall ... 49 6.3 Sheet Pile Wall ... 50 6.4 Secant Pile Wall ... 52 6.5 Soil Mixed Wall ... 53 6.6 Diaphragm Wall ... 55 6.7 Gravity Cement-soil Wall ... 60 6.8 Soil Nailing Wall ... 62 6.9 Strut ... 64 6.10 Anchor Arm (Cable) ... 65 6.11 Foundation Pit Support Combined with Main Structure ... 67 7 Groundwater Control ... 69 7.1 General Requirements ... 69 7.2 Drainage Galleries ... 70 7.3 Dewatering ... 70 7.4 Cut-off Drain ... 75 7.5 Recharge ... 76 8 Construction of earthwork ... 76 8.1 General Requirements ... 76 8.2 Excavation of Earthwork ... 77 8.3 Excavation of Rock Foundation Pit ... 80 8.4 Stacking and Transportation of Earthwork ... 81 8.5 Backfilling of Earthwork ... 81 9 Slope Construction ... 83 9.1 General Requirements ... 83 9.2 Bolt-shotcrete Support ... 83 9.3 Retaining Wall ... 83 9.4 Excavation of Slope ... 85 10 Safe and Green Construction ... 87 Explanation of Wording in this Code ... 90 List of Quoted Standards ... 91 1 General Provisions 1.0.1 This code is prepared with a view to safety applicability, advanced technology, reasonable economy, guaranteed quality and environmental protection during construction of building foundation engineering. 1.0.2 This code is applicable to construction of building foundation. 1.0.3 The construction of building foundation engineering shall ensure safety and quality and shall adjust measures to local conditions and save resources. 1.0.4 The construction of building foundation engineering shall comply with not only this code but also the requirements of relevant current national standards. 2 Terms 2.0.1 Subsoil Soil mass or rock mass that supports the foundation. 2.0.2 Foundation A structural component that transfers external load borne by upper structure and deadweight of upper structure to subsoil. 2.0.3 Composite foundation Subsoil with the loads borne by reinforcement (which is formed by reinforcing or replacing partial soil mass) and subsoil around together. 2.0.4 Pile foundation Foundation composed of pile that is imbedded into subsoil and cushion cap that is connected with pile top together. 2.0.5 Dynamic consolidation The subsoil treatment method to tamp subsoil by repeatedly lifting the hammer to high place and making it fall freely, which impacts the subsoil and gives it vibration energy. 2.0.6 Dynamic replacement The subsoil treatment method to form dense pier by repeatedly lifting the hammer to high place and making it fall freely to form tamping pit on the ground and then repeatedly tamping sand-gravels, steel slags and other granules filled in the tamping pit alternately. 2.0.7 Grouting The treatment method to cement loose soil particles or cracks into an integral whole by injecting solidifiable grout into rock-soil mass gaps with the help of the hydraulic, pneumatic or electrochemical principle. 2.0.8 Preloading The subsoil treatment method to carry out preloading or vacuum preloading to the subsoil to accelerate subsoil consolidation. 2.0.9 Vibrofloatation The subsoil treatment method to form composite foundation composed of original subsoil and pile, which is formed by making the sand soil layer dense under combined action of horizontal vibration of vibroflot or backfilling gravels after pore-forming in soft soil layer. 2.0.10 Post base-grouting bored-pile Bored pile that carry out high-pressure grouting to pile tip after pile-forming through grouting pipe preset in pile shaft and... ......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.