GB50202-2002英文版(建筑地基基础工程施工质量验收规范).doc

《GB50202-2002英文版(建筑地基基础工程施工质量验收规范).doc》由会员分享，可在线阅读，更多相关《GB50202-2002英文版(建筑地基基础工程施工质量验收规范).doc（54页珍藏版）》请在得力文库 - 分享文档赚钱的网站上搜索。

1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流GB50202-2002英文版(建筑地基基础工程施工质量验收规范).精品文档.UDCNational Standard of the Peoples Republic of ChinaP GB 50202-2002建筑地基基础工程施工质量验收规范Code for Acceptance of Construction Qualityof Building FoundationIssued on April 1 2002 Executed on May 1 2002Jointly Promulgated by the Ministry of Co

2、nstruction and the State General Administration for Quality Supervision and Inspection and Quarantine of the Peoples Republic of ChinaNational Standard of the Peoples Republic of China建筑地基基础工程施工质量验收规范Code for Acceptance of Construction Quality of Building FoundationGB 50202-2002Compiled by: Construc

3、tion and Management Commission of Shanghai MunicipalityApproved by: Ministry of Construction of the P.R.C.Executed on: May 1 2002Chinese Planning Press2002 BeijingNational Standard of the Peoples Republic of ChinaCode for Acceptance of Construction Quality of Building FoundationGB 50202-2002Compiled

4、 by Construction and Management Commission of Shanghai MunicipalityPublished by Chinese Planning Press(Address: 4/F, Block C, Guohong Mansion Jia 11, Muxudi Beili, Xicheng District, Beijing)(Zip code: 100038 Tel: 63906413 63906416)Distributed by Beijing branch of Xinhua BookstorePrinted by World Kno

5、wledge Printing House850x1168mm 1/32 2.75 printed sheets 67 thousand Chinese charactersFirst published in April 2002 Second printed in June 2002Number 150001-190000 volumesUnified Book No.: 1580058482Price: RMB15.00Notice on Issuing the National Standard ofthe Code for Acceptance of Construction Qua

6、lity of Building FoundationJ.B. 2002 NO. 79Pursuant to the Notice on the Printing and Distribution of the Preparation and Modification Plans of 1997s Engineering Construction Standards (J.B. 1997 NO.108), this Code for Acceptance of Construction Quality of Building Foundation is rectified jointly by

7、 the Construction and Management Commission of Shanghai Municipality and other relevant departments. Our ministry has arranged for the examination by related departments of the Code and hereby approved it as a national standard with the serial number of GB 5022-2002 and to be effective on May 1 2002

8、. The 4.1.5, 4.1.6, 5.1.3, 5.1.4, 5.1.5, 7.1.3 and 7.1.7 articles hereof are compulsory and must be strictly and exactly performed. Upon the execution of this Code, any related contents with respect of earthworks stipulated in the previously formulated Specifications for Construction and Acceptance

9、of Ground and Foundations GBJ 202-83 and Specifications for Construction and Acceptance of Earthworks and Explosion Engineering GBJ 201-83 shall be abolished and terminated immediately.This Code shall be governed by the Ministry of Construction of the P.R.C., and interpreted by the Ministry with res

10、pect of the compulsory articles hereof and by Shanghai Foundation Engineering Company with respect of the technical details hereof, and published and distributed by Chinese Planning Press under the organization of the standard quota institute of the Ministry of Construction of the P.R.C.Ministry of

11、Construction of the P.R.C.April 1 2002Supporting compilers: Foundation Institute of China Academy of Building Research Design institute of NO.3 Harbouring Bureau of CHEC Comprehensive survey research and design institute under the Ministry of Construction Tongji UniversityChief drafters: Gui Yekun Y

12、e Borong Wu Chunlin Li Yaogang Li Yaoliang Chen Xiquan Gao Hongxing Guo Shutai Miao Junfa Li Kangjun Qiu Shizhong Qian Jianming Liu DelinTable of Contents1 General Rules12 Terms23 Basic Regulations44 Foundation54.1 General Terms54.2 Soil-lime Foundation64.3 Sand-sandstone Foundation64.4 Geosynthetic

13、s Foundation74.5 Flyash Foundation84.6 Dynamic Consolidation Foundation94.7 Grouting Foundation94.8 Preloading Foundation114.9 Vibration Impact Foundation124.10 Jet Grouting Foundation124.11 Soil-cement Mixed Pile Foundation134.12 Soil-lime Compacted Column Composite Foundation144.13 Cement Flyash G

14、ravel Pile Composite Foundation154.14 Tamping Soil-cement Pile Composite Foundation164.15 Sand Pile Foundation175 Pile Foundation195.1 General Terms195.2 Static Force Pressing-in Piles215.3 Pre-tensioned Pre-stressing Tube Pile225.4 Precast Concrete Pile235.5 Steel Pile255.6 Cast-in-place Concrete P

15、ile276 Earthwork296.1 General Terms296.2 Excavation of Earthwork296.3 Backfilling of Earth317 Foundation Pit327.1 General Terms327.2 Row-pile Wall Timbering337.3 Soil-cement Pile Wall Timbering347.4 Bolting and Soil-nailed Wall Support357.5 Steel or Concrete Support System357.6 Underground Diaphragm

16、 Wall367.7 Sunk Well and Caisson387.8 Water Lowering and Drainage428 Quality Acceptance of Divisional (Sub-divisional) Work44Schedule A Key Point for the Survey of Ground and Foundation45Schedule B Performance of Plastic Drainage Belts48Explanation for Usage of Words in the Standard491 General Rules

17、1.0.1 For the purpose of enhancing supervision and management over engineering quality and unifying acceptance rules on construction quality of building foundations so as to ensure engineering quality, this Code is hereby made as follows.1.0.2 This Code shall be applicable to the quality acceptance

18、of foundations in building works1.0.3 Requirements stipulated in any of the engineering technical documents and contracts that are adopted for foundation construction shall at least attain the stipulations set forth hereof.1.0.4 This Code shall be used in cooperation with the Unified Standard for Qu

19、ality Acceptance of Building Engineering GB 50300 that is currently in force and effective1.0.5 Acceptance of the quality of building foundations shall, in addition to this Code, comply with other related national codes and standards that are currently in force and effective.2 Terms2.0.1 Geosyntheti

20、cs foundationA building foundation that is formed by covering geosynthetics with soil (or sands), where geosynthetics may be one or more than one layer. Generally speaking, this method is suitable for shallow foundations.2.0.2 Heavy tamping foundationUnder this circumstance, a free falling heavy tam

21、per will be utilized to tamp soil-covering shallow foundations to form a uniformly hardened surface layer to bear the load upon. When punching, the tampers drop height shall be much bigger than the foundation to be tamped.2.0.3 Dynamic consolidation foundationAs regards this term, the process is sim

22、ilar to that for heavy tamping foundations, except that the tampers drop height in this case must be much bigger than that for heavy tamping foundation.2.0.4 Grouting foundationIn this case, the prepared chemical or cement grout will be infused through conduits into the holes of the soil body, and i

23、ntegrated with the body so as to increase the bodys strength and reduce its compressibility and permeability.2.0.5 Preloading foundationImpose a load on the undisturbed soil to extrude the water contained, so as to realize the pre-consolidation of soil and reduce the building foundations late subsid

24、ence and increase the foundations bearing capacity. There are three methods for the making of preloading foundations, namely, heaped preloading, vacuum preloading and precipitation preloading.2.0.6 Jet grouting foundationAs for this foundation, a driller will be utilized to directly bring a grout ho

25、se with jet nozzle into the predetermined position under the soil layer, or put the hose at the predetermined position after drilling a hole. Then, the grout or water will be driven by high pressure to spray out of the jet nozzle. The whirly spayed grout will integrate with the soil to form a consol

26、idated body. The process of only utilizing a single hose to spay grout is called “one-pipe method”, that of utilizing two pipes to spay high-pressure air and grout called “two-pipe method”, and that of utilizing three pipes to spay high-pressure water, high-pressure air and grout simultaneously is c

27、alled “three-pipe method”.2.0.7 Soil-cement mixed pile foundationUtilize the cement as the solidifying agent and, by a blending machine, mix the cement with the foundations soil, and the hardened mixture will form this foundation.2.0.8 Soil-lime compacted columnDrill holes in the undisturbed soil, f

28、ill in plain soil or lime by layers, tamp them, and make them compact to make the surrounding soil body compact so as to a solid foundation.2.0.9 Cement fly-ash gravel pileAfter utilizing a driller with long twist bits to drill holes or making holes with a sunken tube pile machine, and fill by a pum

29、p or through a charging hopper the mixture of cement, fly ash and reduced stone into holes to form compact and solid foundations.2.0.10 Pressed pile by anchor rodThis pile sinking technology utilizes an anchor rod to press the pile into the soil gradually, where the anchor can use a vertical soil an

30、chor, or a ground anchor that is temporarily anchored in concrete sub-slab or pile cap. 3 Basic Regulations3.0.1 Prior to the construction of building foundations, complete geological survey details and the information of structure about surrounding pipelines, buildings, structures and other utiliti

31、es must be prepared. When necessary, construction surveys and examination shall be carried out so as to ensure the foundations quality and the safety of nearby buildings. Key points about the construction survey refer to Schedule A.3.0.2 Construction units must owns corresponding professional qualif

32、ications and shall established improved quality control and inspection systems.3.0.3 Unit engaged in the inspection of building foundations and tests for certification must acquire the qualification certificates issued by the provincial and above (including the provincial, autonomous region, municip

33、al authority) competent construction authority and certificates for qualified inspection units issued by competent inspection authority.3.0.4 As a divisional work, foundations, if necessary, may be further divided into a number of sub-divisional work pursuant to the Unified Standard for Quality Acce

34、ptance of Buildings Engineering GB 50300 currently in force.3.0.5 In the event that abnormal conditions occurred in the course of construction, the construction shall immediately be stopped. Construction supervision and management companies or owners shall invite survey, design and construction unit

35、s to jointly analyze the conditions so as to solve the problems existed, eliminate hidden quality shortages and detail them in writing.4 Foundation4.1 General Terms4.1.1 The following materials shall be prepared for the construction of building foundations:1. Geotechnical engineering survey material

36、s.2. Type, allocation and structure quality of surrounding buildings and underground facilities.3. Engineering design drawings, design requirements and the standards required to attain, and means of inspection.4.1.2 The quality, testing items, batch quantity and inspection methods of raw materials,

37、such as sands, pebble, cement, steel material, lime and fly ash, shall comply with relevant national standards currently in force.4.1.3 After the foundations construction is completed, quality acceptance should be proceeded in a period of inactivity, which is determined by design requirements.4.1.4

38、Foundation improvement works shall go through a testing phase before the beginning of formal construction so as to verify predetermined construction parameters and improving effects. In load tests for verifying the effects of improvement, the imposed load shall not be smaller than two times of that

39、of the design value.4.1.5 As regards the lime-soil foundation, sand and sandstone foundation, geosynthetics foundation, fly ash foundation, dynamic consolidation foundation, grouting foundation, and preloading foundation, the construction results (foundation strength or bearing capacity) must attain

40、 the level in design requirements. In terms of the number of inspection, at least three points are required for every unit project. At the same time, at least one point shall be inspected every 100m2 for a project with the area of 1000m2 or above, and every 300m2 for a project with the area of 3000m

41、2 or above. At least one point is necessary under every independent foundation, and one point is needed every 20 linear meter along the foundation trench.4.1.6 As regards the soil-cement mixed pile foundation, jet grouting foundation, sand pile foundation, vibration-punching pile composite foundatio

42、n, soil-lime compacted column composite foundation, cement fly ash gravel pile foundation and soil-cement tamping pile composite foundation, the number of inspection of bearing capacity shall be 0.5%-1% of the total but not less than three places. If the inspection of single pile strength is require

43、d, the inspection number shall be 0.5%-1% of the total but not under three piles.4.1.7 With the exception of the main control items set forth in the articles of 4.1.5 and 4.1.6 of this Code, other main control and common items may be inspected randomly. However, among the composite foundations, soil

44、-cement mixed pile, jet grouting pile, vibration-punching pile, soil-lime compacted column, cement flyash and tamping soil-cement pile shall be randomly inspected based on a percentage of 20%.4.2 Soil-lime Foundation4.2.1 Soil, lime or cement (when the lime element is replaced with cement) and their

45、 mixing ratio shall be in line with design requirements. Soil-lime shall be uniformly mixed.4.2.2 In the course of construction, the thickness of various layers, overlap length of the upper and lower layers of sections, water quantity for tamping, number of tamping and compacting coefficient shall b

46、e examined and measured.4.2.3 After the completion of construction, the soil-lime foundations bearing capacity shall be inspected.4.2.4 The Quality inspection standard for soil-lime foundations shall comply with Table 4.2.4.Table 4.2.4 Quality inspection standard for soil-lime foundationsNameNo.Insp

47、ection contentsPermissible variation or valueInspection methodUnitValueMain control items1Bearing capacity of foundationDesign requirementsBy stipulated method2Mixing ratioDesign requirementsBased on the volume ratio at mixing3Compacting coefficientDesign requirementsMeasure on the spotCommon items1Particle size of lime mm5Sieving2Content of organic substance in soil%5Laboratorial roasting3Particle size of soil mm15Sieving4Water content (compared with the required optim