北京市规划和国土资源管理委员会文件

修订说明

北京市规划委员会文件

前言

1　总　　则

2　术语和符号

• 2.1　术　　语

• 2.2　符　　号

3　基本规定

4　地基岩土的分类和定名

5　地下水

• 5.1　一般规定

• 5.2　地下水位的量测与水样的采取

• 5.3　水文地质参数的测定

• 5.4　地下水作用评价

• 5.5　地下水的控制评价

6　地基勘察

• 6.1　一般规定

• 6.2　勘探工作

• 6.3　室内试验和原位测试

• 6.4　勘察报告

7　天然地基的评价与计算

• 7.1　一般规定

• 7.2　基础的埋置深度

• 7.3　承载力计算

• 7.4　变形计算

• 7.5　稳定性验算

• 7.6　城区人工填土的利用

8　天然地基基础

• 8.1　一般规定

• 8.2　无筋扩展基础

• 8.3　配筋扩展基础

• 8.4　柱下联合基础

• 8.5　柱下条形基础

• 8.6　筏形基础

• 8.7　高层与裙房之间不设沉降缝的措施

• 8.8　抗浮设计

9　桩基础

• 9.1　一般规定

• 9.2　桩基承载力计算

• 9.3　桩基础沉降计算

• 9.4　桩基础的设计

10　山区地基

• 10.1　一般规定

• 10.2　山区不均匀地基

• 10.3　采空区地基

• 10.4　边坡和挡土结构

• 10.5　岩溶地基

11　地基处理

• 11.1　一般规定

• 11.2　换填垫层

• 11.3　强夯处理地基

• 11.4　夯实水泥土桩复合地基

• 11.5　水泥粉煤灰碎石桩复合地基

• 11.6　挤密桩复合地基

12　场地、地基抗震评价与抗震设计

• 12.1　一般规定

• 12.2　场地与地基的勘察要求

• 12.3　场地与地基的抗震评价

• 12.4　地基基础的抗震设计

• 12.5　抗震措施

13　现场检验与监测

• 13.1　一般规定

• 13.2　基坑与基槽的检验与边坡监测

• 13.3　桩基础检验与监测

• 13.4　地基处理效果检验

• 13.5　建筑物沉降观测

• 13.6　地下水监测

附录A　岩石分类

附录B　碎石土的密实度

附录C　水文地质参数测定方法

附录C-A　岩土施工工程分级

附录D　图　　例

附录E　北京地区标准冻结深度分区示意图（单位：m）

附录F　平板载荷试验方法

附录G　岩石地基静载荷试验方法

附录H　矩形面积上均布荷载作用下中心点的地基附加应力系数（α）与平均附加应力系数（）表

附录Ⅰ　条形基础宽度的直接算法

附录L　单桩竖向静载荷试验要点

附录M　桩基础施工机械选择及质量要求参照表

附录N　预制桩桩端持力层比贯入阻力ps与最终贯入度的关系表

附录O　预制桩桩端持力层标准贯入试验锤击数N与最终贯入度关系表

附录Q　基坑与基槽的检验与处理方法

本规范用词说明

引用标准名录

1　General Provisions

2　Terms and Symbols

• 2.1　Terms

• 2.2　Symbols

3　Basic Requirements

4　Classification and Types of the Soils and Rocks

5　Groundwater

• 5.1　General Requirements

• 5.2　Measurement of Groundwater Level and Sampling

• 5.3　Determination of Hydrogeological Parameters

• 5.4　Evaluation of Groundwater Impacts

• 5.5　Evaluation of Groundwater Control

6　Site Investigation

• 6.1　General Requirements

• 6.2　Exploration

• 6.3　Laboratory and In-situ Tests

• 6.4　Geotechnical Investigation Report

7　Evaluation and Analysis of Direct Footing Scheme

• 7.1　General Requirements

• 7.2　Embedding Depth of Foundation

• 7.3　Determination of Bearing Capacity

• 7.4　Prediction of Foundation Deformation

• 7.5　Stability Analysis

• 7.6　Re-use of the Made Ground in Ancient City Proper

8　Design of Direct Footings

• 8.1　General Requirements

• 8.2　Un-reinforced Spread Footing

• 8.3　Reinforced Spread Footing

• 8.4　Combined Footing under Column

• 8.5　Strip Foundation under Column

• 8.6　Raft Foundation

• 8.7　Measures for Connected High-rise Building and Annex without Settlement Joints

• 8.8　Anti-buoyancy Design

9　Design of Piled Foundation

• 9.1　General Requirements

• 9.2　Determination of Bearing Capacity

• 9.3　Prediction of the Settlement of Piles

• 9.4　Design of Piled Foundation Scheme

10　Foundations in Mountainous Area

• 10.1　General Requirements

• 10.2　Heterogeneous Ground

• 10.3　Foundations over Mining Out Area

• 10.4　Slope and Retaining Structure

• 10.5　Karst Foundation

11　Ground Improvement

• 11.1　General Requirements

• 11.2　Ground Treated Using Replacement Method

• 11.3　Ground Improved Using Dynamic Compaction Method

• 11.4　Composite Foundation of Compacted Cement Soil Piles

• 11.5　Composite Foundation of Cement-fly ash-Gravel Piles

• 11.6　Composite Foundation of Compacted Piles

12　Seismic Evaluation and Design of the Site and Foundation

• 12.1　General Requirements

• 12.2　Site Investigation for Seismic Evaluation

• 12.3　Seismic Evaluation of the Site and Foundation

• 12.4　Seismic Design of the Site and Foundation

• 12.5　Preventive Measures

13　Field Inspection and Monitoring

• 13.1　General Requirements

• 13.2　Bottom Checking During Foundation Excavation and Slope Monitoring

• 13.3　Inspection and Monitoring of Piles

• 13.4　Quality Verification of Ground Treatments

• 13.5　Settlement Observation of Buildings

• 13.6　Monitoring of Groundwater

Appendix A　Geotechnical Classification of Rocks

Appendix B　Density of Gallets

Appendix C　Determining Method for Obtaining Hydrogeological Parameters

Appendix C-A　Difficulty Levels of Earth Excavation

Appendix D　Legends in Drawings

Appendix E　Zoning Map of the Standard Frozen Depths in Beijing Area

Appendix F　Guidelines for Plate Loading Test

Appendix G　Guidelines for Plate Loading Test on Rocks

Appendix H　Additional Stress Coefficients（α）and Mean Additional Stress Coefficients（）for the Center of Uniformly Distributed Foundation Load over Rectangular Area

Appendix I　Direct Calculation of the Width of Strip Foundation

Appendix L　Key Points of Pile Load Test Subject to Vertical Load

Appendix M　Reference Indexes for Selecting Piling Equipment

Appendix N　Relationship between Specific Resistance（ps）and Final Penetration of Precast Piles

Appendix O　Relationship between Specific Resistance（CPT）and Final Penetration of Precast Piles

Appendix Q　Bottom Checking and Ground Treatment Methods During Foundation Excavation

Explanation of Wordings in This Code

List of Quoted Standards