GB 50021-2001 PDF English
US$185.00 · In stock · Download in 9 secondsGB 50021-2001: Code for investigation of geotechnical engineering Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB 50021: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 50021-2001 | English | 185 |
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Code for investigation of geotechnical engineering
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| GB 50021-1994 | English | RFQ |
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Code for investigation of geotechnical engineering
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GB 50021-2001: Code for investigation of geotechnical engineering---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB50021-2001
NATIONAL STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
Code for investigation of geotechnical engineering
[2009 Edition]
Issued on January 10, 2002 Implemented on March 01, 2002
Issued by the Ministry of Construction of the People's Republic of China
Table of Contents
Foreword ... l
1 General Provisions ... 4
2 Terms and Symbols ... 4
3 Investigation Classification and Geotechnical Classification ... 7
4 Basic Requirements of Engineering Investigations ... 16
4 .1 Building Construction and Structures ... 16
4.2 Underground Excavation ... 23
4.3 Shore side Engineering ... 27
4.4 Road and Overhead Network Engineering ... 29
4.5 Waste Disposal Engineering ... 33
4.6 Nuclear Power Plant ... 38
4.7 Side Slope Engineering ...45
4.8 Foundation Excavation Engineering ...47
4.9 Pile Foundation ... 49
4.10 Foundation Treatment ... 52
4.11 Load Increasing and Protection for Pre-existing Building ... 55
5 Adverse Geological Action and Geological Disaster ... 58
5.1 Karst ... 58
5.2 Landslide ... 62
5.3 Dangerous Rock and Collapse ... 64
5.4 Mud-rock Flow ... 65
5.5 Worked-out Section ... 67
5.6 Land Subsidence ... 69
5.7 Seismic Effect of Site and Foundation ... 71
5.8 Active Faults ... 73
6 Special Rock and Soil ... 75
6.1 Collapsible Soil ... 75
6.2 Red Clay ... 77
6.3 Soft Soil ... 80
6.4 Fabricated Soil ... 82
6.5 Filling ... 83
6.6 Perennial Frost ... 84
6.7 Expansion Rock and Soil ... 88
6.8 Brine Salting Rock and Soil... 91
6.9 Decayed Rock and Residual Soil... 93
6.10 Pollute Soil... 95
7 Groundwater ... 98
7.1 Investigation Requirements of Groundwater ... 98
7.2 Mensuration for Hydrogeologic Parameter ... 99
7.3 Evaluation for Functions of Ground-Water ... 101
8 Engineering Geological Mapping and Survey ... 103
9 Exploration and Sampling ... 106
9 .1 General Requirements ... 106
9.2 Drilling ... 106
9.3 Costeening, Trenching and Cave Exploration ... 109
9.4 Adopting of Geotechnical Samples ... 109
9.5 Geophysical Exploration ... 112
10 In-situ Measurement ... 114
10 .1 General Requirements ... 114
10.2 Load Test ... 114
10.3 Statically Cone Penetration Test ... 117
10.4 Circular Cone Dynamic Penetration Test ... 119
10.5 Standard Penetration Test ... 120
10.6 Vane Shear Test ... 121
10.7 Pressurementer Test ... 122
10. 8 Flat Dilatometer Test ... 124
10.9 In-situ Direct Shear Test ... 125
10.10 Wave Celerity Testing ... 127
10.11 Rock Mass In-Situ Stress Testing ... 128
10 .12 Testing with Shock Excitation Method ... 129
11 Indoor Test ... 131
11.1 General Requirements ... 13 1
11.2 Soil Physical Property Test ... 131
11.3 Soil Compress Consolidation Test ... 132
11.4 Soil Shear Strength Test ... 133
11.5 Soil kinetic Property Test ... 134
11.6 Rock Test ... 134
12 Assessment of Water and Soil Corrosivity ... 136
12.1 Sampling and Testing ... 136
12.2 Corrosion Evaluation ... 137
13 In-situ Inspection and Monitoring ... 141
13 .1 General Provisions ... 141
13.2 Inspection and Monitoring for Foundation of Ground Base ... 141
13.3 Monitoring for Bad Geological Action and Geologic Hazard ... 143
13 .4 Monitoring of Groundwater ... 144
14 Geotechnical Engineering Analysis Assessment and Result Report ... 147
14 .1 General Provisions ... 14 7
14.2 Analyses and Adoption of Rock and Soil Parameter ... 148
14.3 Basic Requirements of Outcome Report ... 151
Annex A. Rock/soil Classification and Verification ... 154
Annex B. Blow Count Correction of Taper Dynamic Sounding ... 159
Annex C. Engineering Classification of Debris Flow ... 161
Annex D. Primary Distinguishing Method of Swelling Soil ... 164
Annex E. Hydrogeologic Parameter Measurement Method ... 165
Annex F. technical standards of the soil sampler ... 167
Annex G. site environment type ... 168
Annex H Explanation of Wording ... 169
Foreword
According to the requirements of JIANBIAO [1998] No. 244 issued by the Ministry
of Construction (MOC), "Code for Investigation of Geotechnical Engineering" GB
50021-1994 shall be revised. In the revision procedure, the chief development
organization - MOC Integrated Investigation Research and Design Institute, together
with the relevant investigation, engineering, research, teaching organizations, are
consisted of a preparation group to extensively solicit for opinions nationwide and to
prepare a special report on the key modified parts. In addition, the preparation group
also has coordinated with the implementing and revising national standards involved
for many times. Through repeated discussion and revision, the preparation group
successively prepares first draft, exposure draft and approval draft for examining and
finalizing.
This Code basically remains the application scope, entire framework and primary
coverage of 1994 Edition and makes some partial adjustments accordingly. Now, the
Code comprises 14 chapters with the main contents as follows. 1. general provisions;
2. terms and symbols; 3. investigation classification and geotechnical classification; 4.
basic requirements of engineering investigation; 5. adverse geological action and
geological disaster; 6. special rock/soil; 7. groundwater; 8. engineering geological
mapping and survey; 9. exploration and sampling; 10. in-situ testing; 11. indoor test;
12. Assessment of water and soil corrosion ; 13. In-situ inspection and monitoring; 14.
Geotechnical engineering analysis assessment and result report.
The major revised contents include .
1. The investigation of " nuclear power plant" 1s added into the application
scope;
2. "Terms and Symbols" chapter is added;
3. Hardness classification and integrity classification of rock, and basic quality
classification of rock mass are added;
4. The investigation requirements of "buildings and structures" as well as "pile
foundation" are revised;
5. The investigation provisions of "underground cavity", "shoreside project", "
foundation pit project" and " foundation treatment" are revised;
6. The section of "tailing dam and ash-storing dam" is replaced with
"investigation of waste disposal project";
7. The chapter name of "in-situ stability" is replaced with " adverse geological
action and geological disaster";
8. Sections "site and foundation m the meizoseismal area" and "seismic
liquidation" are incorporated into a section named as " seismic effect of site
and foundation";
9. "collapsible soil" and" red clay" have been revised;
10. Investigation requirements of" groundwater" are strengthened;
11. "Deep load test" and "flat chisel side-bulge test" are added.
The context is compressed so as to highlight the technical rules that must be abided by
in the investigation works as the execution reference of the engineering quality
examination.
In the future, this Code might be revised partially and the relevant partial revision
information and content of provisions will be published on the magazine,
Standardization of Engineering Construction.
The provisions printed in bold type are compulsory ones and must be enforced
strictly.
All relevant organizations are kindly requested to sum up and accumulate your
experiences in actual practices during the process of implementing this Code. The
relevant opinions and advice, whenever necessary, can be posted or passed on to
MOC Integrated Investigation Research and Design Institute (No. 177,
Dongzhimennei Avenue, Beijing, 100007, China).
The participating development organizations and staffs are as follows.
Chief development organization. MOC Integrated Investigation Research and Design
Institute
Participating development organization. Beijing Investigation and Design Institute;
Shanghai Geotechnical investigation and Design Institute;
Central-South Investigation and Design Institute;
State Power Corporation Power Planning and Design Institute;
Investigation Institute of the Ministry of Machine Building;
China Ordnance Industrial Geotechnical Investigation Design Institute;
1 General Provisions
1.0.1 This code is formulated with a view to implement the related national
technical-economic policies in the geotechnical investigation activities, to accomplish
state-of-the-art technology and economic feasibility, to ensure engineering quality and
to improve investment benefit.
1.0.2 This Code is applicable to the geotechnical investigation of the engineering
projects excluding hydraulic works, railway, highway, bridge and culverts.
1.0.3 Prior to the engineering and construction of the projects, the geotechnical
investigation must be carried out according to the basic construction proc...
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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