标准编号:	MH/T 5027-2013
中文名称:	民用机场岩土工程设计规范
英文名称:	Code for Geotechnical Engineering Design of Airport
行业分类:	MH    民用航空行业标准
发布日期:	2013-09-24
实施日期:	2014-1-1
标准状态:	现行
翻译语言:	英文
文件格式:	PDF
中文字符数:	45000 字
翻译价格(元):	4725.00 元
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.



This code is prepared under the commission of the Airport Department of Civil Aviation Administration of China for the purpose of meeting the needs of construction and development of civil airports, and unifying the technical standards for geotechnical engineering design for civil airports. After repeated discussions and modifications, this code was submitted for approval by the drafting team, through extensive investigation, careful summarization and assimilation of the design results and construction practice of geotechnical engineering design for civil airport in China for twenty years, reference to relevant domestic and international technical specifications and data during drafting, extensive solicitation of opinions and multiple expert review.



The main technical contents of this code are divided into 9 clauses: 1. General provisions; 2. Terms and symbols; 3. Basic requirements; 4. Design indexes; 5. Geotechnical engineering design and calculation; 6. Site formation; 7. Special soils in airfield area; 8. Adverse geologic actions in airfield area; 9. Special project design.



Chief development organization of this code:



China Airport Construction Group Corporation



Participating development organizations of this code:



CIGIS (China) Limited



Shanghai CAAC New Era Airport Design & Research Institute Co., Ltd.



Tongji University



Wuhan University

Contents



1 General provisions 1

2 Terms and symbols 1

2.1 Terms 1

2.2 Symbols 4

3 Basic requirements 5

4 Design indexes 8

4.1 General requirements 8

4.2 Indexes of foundation settlement deformation 8

4.3 Slope stability indexes 9

4.4 Foundation design control indexes 10

5 Geotechnical engineering design and calculation 12

5.1 General requirements 12

5.2 Deformation calculation 13

5.3 Stability calculation 15

6 Site formation 19

6.1 General requirements 20

6.2 Excavation and allocation of earthwork and stonework 20

6.3 Drainage 21

6.4 Affected area of pavement in airfield area, unpaved area in airfield area and area affecting fill slope stability 21

6.5 Terminal area and appurtenant building area 23

6.6 Reserved development area 24

7 Special soils in airfield area 24

7.1 General requirements 24

7.2 Weak soil 25

7.3 Collapsible loess 26

7.4 Expansive soil 29

7.5 Saline soil 31

7.6 Frozen soil 32

7.7 Filling 35

8 Adverse geologic actions in airfield area 35

8.1 General requirements 35

8.2 Karst 36

8.3 Landslides 38

8.4 Liquidation 40

8.5 Mined-out area 41

9 Special project design 42

9.1 General requirements 42

9.2 Construction projects without air service suspension in airfield area 42

9.3 High filling project 43

9.4 Sea reclamation project 45

Annex A Test method of subgrade reaction modulus 48

Annex B Test method of California bearing ratio 53

Annex C Explanation of wording in this code 61

Annex D Normative references 62



Code for geotechnical engineering design of airport





1 General provisions



1.0.1 This code is formulated with a view to standardizing the geotechnical engineering design for civil airport, based on the principle of safety and applicability, advanced technology, economic rationality, quality assurance, resource conservation and environment protection.



1.0.2 This code is applicable to the geotechnical engineering design for constructed and renovated (extended) civil airport (including the civil part of joint-used airport by military and civil units).



1.0.3 Comprehensive consideration shall be given to site division, adaptation to local conditions and using local materials in the geotechnical engineering design for civil airport; in addition, new technologies, materials and processes are advocated.



1.0.4 The geotechnical engineering design for civil airport shall meet the requirements of environmental assessment, reduce adverse effects on ecological environment, and prevent soil and water loss and secondary geological disasters.



1.0.5 In addition to the requirements of this code, the geotechnical engineering design for civil airport shall also meet the requirements of the current relevant standards of the nation.



2 Terms and symbols



2.1 Terms



I Terms of airport engineering



2.1.1 airport



area demarcated on land or water surface (including various buildings, plants and facilities), all or part of which may be used for take-off, landing and ground movement



2.1.2 airfield area



site used for take-off, landing, taxiing and parking of aircraft, including runway, runway strip, runway end safety area, taxiway, apron and areas around the airport that have limitations on obstacles



2.1.3 terminal area



general term of the landside part of airport land-air exchange area, including the terminal (terminal building), control center, parking building (lot), terminal traffic and service facilities, etc.



2.1.4 appurtenant building area



general term of areas except for the airfield area and the terminal area of the airport, including airport office area, comprehensive support area, airport freight area, life service area, etc.



2.1.5 affected area of pavement in airfield area



a certain foundation range under the pavement (including the shoulder) in the airfield area, that may affect or be affected by the deformation of pavement (including the shoulder)



2.1.6 unpaved area in airfield area



other airfield areas except for the affected area of pavement in airfield area



2.1.7 area affecting fill slope stability



area having an impact on the stability of fill slope



2.1.8 pavement bed



subgrade part within 0.80m below the bottom of the pavement, which is divided into upper pavement bed (0m~0.3m) and lower pavement bed (0.3m~0.80m)



II Terms of geotechnical engineering



2.1.9 geotechnical engineering



science and technology involved in the utilization, treatment or improvement of rocks and soil in civil engineering



2.1.10 subgrade



natural or artificial filling soil (rock) under the pavement, affected by the load transmitted by aircraft or vehicles on the pavement



2.1.11 foundation



natural or artificial filling soil (rock) bearing the load of building (structure)



2.1.12 filling body



earthwork and stonework manually filled from the original ground to the top subgrade surface or the design surface of site formation



2.1.13 post-construction settlement



settlement of pavement during the design working life after the completion of pavement construction



2.1.14 post-construction differential settlement



ratio of the absolute value of settlement difference between adjacent settlement calculation points or monitoring points to their horizontal distance



2.1.15 settlement during construction period



settlement of foundation from the start of foundation treatment or earthwork construction to the completion of pavement construction



2.1.16 subgrade reaction modulus



ratio of the pressure (load) to the deformation of a certain area measured by the subgrade reaction modulus test



2.1.17 special soils



rock-soil with special material composition, structure and unique engineering characteristics. This code covers weak soil, collapsible loess, expansive soil, saline soil, frozen soil, etc.



2.1.18 weak soil



soft plastic and flowing plastic cohesive soil and saturated loose silt



2.1.19 adverse geologic actions



geologic actions that may cause harm to the engineering due to internal force or external force of the earth, including karst, landslide, liquefaction, etc. in this code



2.1.20 high filling project



project with the maximum filling height or fill slope height (height difference from the top to the foot of the slope) greater than or equal to 20m for airports in mountainous or hilly areas



2.1.21 sea reclamation project



airport construction project on the site forming through artificial reclamation in sea areas or tidal flats



III Design terms



2.1.22 geotechnical engineering design for airport



activity of analyzing and demonstrating the geotechnical engineering problems involved in the airport construction and preparing the design documents according to the airport construction requirements



2.1.23 site formation



a process of transforming the natural original ground into the working face required by the project according to certain technical requirements



2.1.24 topography design



activity of determining the design surface of airport site formation according to certain technical requirements. It is also called vertical design



2.1.25 method of information design



design method of verification, optimization and perfection of design parameters and design scheme according to the data of information construction and construction survey feedback



2.2 Symbols



2.2.1 Geotechnical physical property



e——the void ratio;



γ——the gravity density, referred to as “unit weight”;



2.2.2 Geotechnical deformation parameters



Cs——the swelling index;



Cc——the compression index;



pc——the preconsolidation pressure.

2.2.3 Geotechnical strength parameters



c——the cohesion;



φ——the internal friction angle;



CBR——the California bearing ratio.



2.2.4 Other symbols



Fs——the slope stability safety factor;



k0——the subgrade reaction modulus;



s——the settlement.



3 Basic requirements



3.0.1 The following data shall be obtained before geotechnical engineering design:



1 site division and topography design data;



2 geotechnical engineering investigation data;



3 local geotechnical engineering management experience and construction conditions.



3.0.2 The grading of geotechnical engineering design for airport shall be based on the site complexity level and the foundation grade according to Table 3.0.2.

 

Table 3.0.2 Grading of geotechnical engineering design for airport

Condition for determining the geotechnical engineering design grade Geotechnical engineering design grade

Site complexity Foundation grade

Grade I site (complex site) Grades I, II and III Grade A

Grade II site (moderately complex site), Grade III site (simple site) Grade I

Grade II site (moderately complex site) Grades II and III Grade B

Grade III site (simple site) Grade II

Grade III site (simple site) Grade III Grade C

Note: The site complexity and the foundation grading are in accordance with MH/T 5025 Specifications for geotechnical investigation and surveying of airports.



3.0.3 The geotechnical engineering design for airport may be divided into three stages, i.e. scheme design, preliminary design and construction drawing design. The technical design may be added after the preliminary design according to the actual situation.

1 The geotechnical engineering design shall be combined with local experience for scheme comparison and selection to form the technical scheme study report.



2 The geotechnical engineering preliminary design shall be based on the scheme design for comparison and selection of design scheme to determine the design scheme and technical and economic indexes.



3 The geotechnical engineering technical design shall be carried out on the basis of preliminary design and field tests or special study results, to solve major and complicated technical problems that have not been completely solved by preliminary design, and propose optimized design scheme and technical and economic indexes.



4 The design of geotechnical engineering construction drawing shall be based on the preliminary design or technical design, to put forward construction design parameters and construction technical requirements.



3.0.4 The method of information design shall be adopted for the airport with Grade A geotechnical engineering design and should be adopted for the airport with Grade B geotechnical engineering design. The information design is applicable to construction stage and shall be based on the complete construction drawing design.



3.0.5 The site division shall be carried out based on the characteristics of the airport construction project and the general layout plan according to Table 3.0.5.



 

Table 3.0.5 Site division

Division Range

Affected area of pavement in airfield area The extension range of 1m~3m on both sides of the shoulder, where the filling area still needs to slope to the original ground at 1:0.6 ~ 1:0.4 to both sides

Unpaved area in

airfield area Area outside the affected area of pavement in airfield area, excluding the area affecting fill slope stability

Terminal area Including the terminal (terminal building), control center, parking building (lot), terminal traffic and service facilities, etc.

Appurtenant

building area Including airport office area, comprehensive support area, airport freight area, life service area, etc.

Reserved

development area Planned development area reserved within the site formation area

Area affecting fill

slope stability It is determined according to the filling height and the actual condition of the natural ground, through specific analysis

Note: The slope ratio of the two sides outside the shoulder of the filling area in the affected area of pavement in airfield area is 1:0.6 when the filling is coarse-grained soil such as medium sand, coarse sand and gravel, and 1:0.4 when the filling is fine-grained soil such as silty clay.



3.0.6 In the geotechnical engineering design for airport, the foundation settlement deformation and the slope stability shall be analyzed. When the foundation settlement deformation or slope stability does not meet the requirements and foundation treatment is required, the treated foundation shall be checked for settlement deformation or stability.



3.0.7 The design indexes, parameters and standards of the foundation or filling body shall be determined in the geotechnical engineering design in combination with excavation area and filling area formed by site division and site formation.



3.0.8 When determining the geotechnical engineering design scheme, the following steps should be followed:



1 Determine the purpose, scope and various technical indexes of geotechnical engineering design according to geotechnical engineering conditions and in combination with site division and functional requirements, and preliminarily select several geotechnical engineering technical schemes for consideration through analysis.



2 For the initially selected geotechnical engineering technical scheme, carry out a comprehensive technical and economic analysis from the aspects of technical reliability, feasibility, cost, construction period requirements, environmental effect, etc. to determine the geotechnical engineering design scheme.



3.0.9 For airports with Grade A geotechnical engineering design, field tests and special studies shall be carried out. For airports with Grade B geotechnical engineering design, field tests should be carried out. For airports with Grade C geotechnical engineering design, it is appropriate to carry out process construction tests. It is required to make test design, put forward the design parameters, construction technical requirements and testing requirements for the conduction of field test. Meanwhile, the monitoring requirements shall be put forward according to the actual situation.



3.0.10 The geotechnical engineering detection and monitoring requirements shall be put forward in the geotechnical engineering design. Those such as the scope, contents and time of detection and monitoring should be determined according to geotechnical engineering design contents and grades.



3.0.11 In the geotechnical engineering design, the surface and internal drainage systems shall be set up according to the actual situation.



3.0.12 In the geotechnical engineering design, the effect of municipal and transportation projects crossing the airport shall be considered and technical requirements shall be put forward for those crossing projects.



4 Design indexes



4.1 General requirements



4.1.1 The geotechnical engineering design indexes for civil airports shall include indexes of foundation settlement deformation, slope stability indexes, foundation design control indexes and other characteristic indexes.



4.1.2 The geotechnical engineering design indexes for civil airports shall be determined reasonably through comprehensive study based on natural conditions, engineering geological conditions, hydrogeological conditions, seismic conditions, site division, service load and local experience.



4.2 Indexes of foundation settlement deformation



4.2.1 The post-construction settlement and post-construction differential settlement within the design working life of the affected area of pavement in airfield area and the unpaved area in airfield area should not be greater than those specified in Table 4.2.1.

1 General provisions
2 Terms and symbols
2.1 Terms
2.2 Symbols
3 Basic requirements
4 Design indexes
4.1 General requirements
4.2 Indexes of foundation settlement deformation
4.3 Slope stability indexes
4.4 Foundation design control indexes
5 Geotechnical engineering design and calculation
5.1 General requirements
5.2 Deformation calculation
5.3 Stability calculation
6 Site formation
6.1 General requirements
6.2 Excavation and allocation of earthwork and stonework
6.3 Drainage
6.4 Affected area of pavement in airfield area, unpaved area in airfield area and area affecting fill slope stability
6.5 Terminal area and appurtenant building area
6.6 Reserved development area
7 Special soils in airfield area
7.1 General requirements
7.2 Weak soil
7.3 Collapsible loess
7.4 Expansive soil
7.5 Saline soil
7.6 Frozen soil
7.7 Filling
8 Adverse geologic actions in airfield area

1 总则

1.0.1 为规范民用机场岩土工程设计，本着安全适用、技术先进、经济合理、确保质量、节约资 源、保护环境的原则，制定本规范。
1.0.2 本规范适用于新建和改（扩）建民用机场（含军民合用机场民用部分）的岩土工程设计。
1.0.3 民用机场岩土工程设计应综合考虑场地分区，因地制宜、就地取材，并提倡采用新技术、 新材料和新工艺。
1.0.4 民用机场岩土工程设计应满足环境评价等要求，减少对生态环境的不良影响，防止水土流 失和次生地质灾害。
1.0.5 民用机场岩土工程设计除应符合本规范的规定外，尚应符合国家现行有关技术标准的规 定。



2 术语和符号

2.1 术语


Ⅰ 机场工程术语


2.1.1 机场 airport
在陆地上或水面上划定的区域（包括各种建筑物、装置和设施），其全部或部分可供飞机起 飞、着陆和地面活动使用。
2.1.2 飞行区 airfield area
供飞机起飞、着陆、滑行和停放使用的场地，包括跑道、升降带、跑道端安全区、滑行道、 机坪以及机场周边对障碍物有限制要求的区域。
2.1.3 航站区 terminal area
机场陆、空交换区域陆侧部分的统称，包括航站楼（候机楼）、管制中心、停车楼（场）、 航站交通及服务设施等。
2.1.4 工作区 appurtenant building area
除飞行区、航站区外，机场其他区域的统称，包括机场办公区、综合保障区、机场货运区、 生活服务区等。
2.1.5 飞行区道面影响区 affected area of pavement in airfield area
飞行区内道面（包括道肩）下与其变形有相互影响的一定地基范围。
2.1.6 飞行区土面区 unpaved area in airfield area
飞行区道面影响区以外的其他飞行区。
2.1.7 填方边坡稳定影响区 area affecting fill slope stability
对填方边坡的稳定性有影响的区域。
2.1.8 道床 pavement bed
道面底面以下 0.80m 范围内的道基部分，分上道床（0m～0.30m）和下道床（0.30m～0.80m） 两部分。

Ⅱ 岩土工程术语


2.1.9 岩土工程 geotechnical engineering
土木工程中涉及岩石、土的利用、处理或改良的科学技术。
2.1.10 道基 subgrade
道面下受道面传递飞机或车辆荷载影响的天然或人工填筑土（岩）体。
2.1.11 地基 foundation
承受建（构）筑物荷载的天然或人工填筑的土（岩）体。
2.1.12 填筑体 filling body
原地面至道基顶面或场地平整设计面人工填筑的土石方。
2.1.13 工后沉降 post-construction settlement
道面施工完成后设计使用年限内道面产生的沉降。
2.1.14 工后差异沉降 post-construction differential settlement
相邻沉降计算点或监测点工后沉降差值的绝对值与其水平距离之比。
2.1.15 施工期沉降 settlement during construction period
自地基处理或土石方施工开始至道面施工完成时，地基产生的沉降。
2.1.16 道基反应模量 subgrade reaction modulus
由道基反应模量试验测定的一定面积所受到的压强（荷载）与变形的比值。
2.1.17 特殊性岩土 special soils
具有特殊物质成分、结构和独特工程特性的岩土。本规范包括软弱土、湿陷性黄土、膨胀土、 盐渍土、冻土等。
2.1.18 软弱土 weak soil
软塑和流塑的粘性土及饱和松散粉土。
2.1.19 不良地质作用 adverse geologic actions
由地球内力或外力产生的对工程可能造成危害的地质作用。本规范包括岩溶、滑坡、液化等。
2.1.20 高填方工程 high filling project
山区或丘陵地区机场最大填方高度或填方边坡高度（坡顶至坡脚高差）大于等于 20m 的工程。
2.1.21 填海工程 sea reclamation project
在海域或滩涂内建设机场，通过人工围填方式形成场地的工程。

Ⅲ 设计术语


2.1.22 机场岩土工程设计 geotechnical engineering design for airport
按照机场建设要求，对机场建设所涉及的岩土工程问题进行分析、论证，编制设计文件的活 动。
2.1.23 场地平整 site formation
按照一定技术要求，将天然的原地面改造成工程所需工作面的过程。
2.1.24 地势设计 topography design
按照一定技术要求，确定机场场地平整设计面的活动，也称竖向设计。
2.1.25 动态设计法 method of information design
根据信息施工和施工勘察反馈的资料，对设计参数和设计方案进行验证、优化和完善的设计 方法。



2.2 符号


2.2.1 岩土物理性质
e ——孔隙比；
 ——重力密度，简称“重度”。

2.2.2 岩土变形参数 Cs——回弹指数； Cc——压缩指数；
pc——先期固结压力。

2.2.3 岩土强度参数
c——粘聚力；
 ——内摩擦角；
CBR——加州承载比。

2.2.4 其他符号 Fs——边坡稳定安全系数； k0——道基反应模量；
s——沉降量。



3 基本规定

3.0.1 岩土工程设计前应取得下列资料：
1 场地分区和地势设计资料；
2 岩土工程勘察资料；
3 当地岩土工程治理的经验和施工条件等资料。
3.0.2 机场岩土工程设计等级划分，应根据场地复杂程度和地基等级按表 3.0.2 确定。

表 3.0.2 机场岩土工程设计等级划分

确定岩土工程设计等级的条件
岩土工程设计等级
场地复杂程度 地基等级
一级场地（复杂场地） 一级、二级、三级
甲级
二级场地（中等场地）、三级场地（简单场地） 一级
二级场地（中等场地） 二级、三级
乙级
三级场地（简单场地） 二级
三级场地（简单场地） 三级 丙级
注：场地复杂程度、地基等级划分按《民用机场勘测规范》MH/T 5025 执行。


3.0.3 机场岩土工程设计可分为方案设计、初步设计和施工图设计三个阶段。根据实际情况，在 初步设计后可增加技术设计。
1 岩土工程方案设计应结合当地经验进行多方案比较，形成技术方案研究报告。
2 岩土工程初步设计应在方案设计的基础上进行设计方案比选，确定设计方案和技术经济 指标。
3 岩土工程技术设计应在初步设计的基础上，基于现场试验或专项研究成果进行，解决初 步设计尚未完全解决的重大、复杂的技术问题，提出优化的设计方案和技术经济指标。
4 岩土工程施工图设计应在初步设计或技术设计的基础上进行，提出施工设计参数和施工 技术要求。
3.0.4 岩土工程设计等级为甲级的机场，应采用动态设计法；岩土工程设计等级为乙级的机场， 宜采用动态设计法。动态设计适用于施工阶段，应以完整的施工图设计为基础。
3.0.5 根据机场建设项目的特点和总平面规划图，可按表 3.0.5 进行场地分区。

表 3.0.5 场地分区

分 区 范 围
飞行区道面影响区 道肩两侧各外延 1m～3m 的范围，填方区尚需以 1∶0.6～1∶0.4 向两侧放坡至原地面
飞行区土面区 飞行区内飞行区道面影响区以外的区域，不包括填方边坡稳定影响区
航站区 包括航站楼（候机楼）、管制中心、停车楼（场）、航站交通及服务设施等的区域
工作区 包括机场办公区、综合保障区、机场货运区、生活服务区等
预留发展区 场地平整范围内预留的规划发展区域
填方边坡稳定影响区 根据填方高度和天然地基的实际条件，通过具体分析确定
注：飞行区道面影响区填方区道肩外向两侧放坡坡比，填土为中砂、粗砂、碎石等粗粒土时可取 1∶0.6，填土 为粉质粘土等细粒土时可取 1∶0.4。

3.0.6 机场岩土工程设计应进行地基沉降变形和边坡稳定性分析，地基沉降变形或边坡稳定性不 满足要求需进行地基处理时，应对处理后的地基进行沉降变形或稳定性验算。
3.0.7 岩土工程设计应结合场地分区和场地平整形成的挖方区和填方区，确定地基或填筑体的设 计指标、参数和标准。
3.0.8 确定岩土工程设计方案时，宜按下列步骤进行：
1 根据岩土工程条件，结合场地分区及功能要求，确定岩土工程设计的目的、范围以及各 项技术指标，并通过分析，初步选出几种可供考虑的岩土工程技术方案。
2 对初步选出的岩土工程技术方案，从技术可靠性、可实施性、造价、工期要求以及对环 境影响等方面进行综合技术经济分析，确定岩土工程设计方案。
3.0.9 岩土工程设计等级为甲级的机场，应开展现场试验，并进行专项研究；岩土工程设计等级 为乙级的机场，宜开展现场试验；岩土工程设计等级为丙级的机场，宜进行工艺性施工试验。开 展现场试验应进行试验设计，提出设计参数、施工技术要求和检测要求，根据实际情况提出监测 要求。
3.0.10 岩土工程设计应提出岩土工程检测和监测要求，检测和监测的范围、内容和时间等宜根 据岩土工程设计内容及岩土工程设计等级确定。
3.0.11 岩土工程设计应根据实际情况设置地表及内部排水系统。
3.0.12 岩土工程设计应考虑穿越机场的市政、交通等工程的影响，并对穿越工程提出技术要求。



4 设计指标

4.1 一般规定


4.1.1 民用机场岩土工程设计指标应包括地基沉降变形指标、边坡稳定性指标、地基设计控制指 标以及其他特性指标。
4.1.2 民用机场岩土工程设计指标应根据场地自然条件、工程地质条件、水文地质条件、地震条 件、场地分区、使用荷载和当地经验，综合研究，合理确定。



4.2 地基沉降变形指标


4.2.1 飞行区道面影响区和飞行区土面区，设计使用年限内的工后沉降和工后差异沉降不宜大于
表 4.2.1 的规定。

表 4.2.1 工后沉降和工后差异沉降

场地分区 工后沉降（m） 工后差异沉降（‰）


飞行区道面影响区 跑道 0.2～0.3 沿纵向 1.0～1.5
滑行道 0.3～0.4 沿纵向 1.5～2.0
机坪 0.3～0.4 沿排水方向 1.5～2.0
飞行区土面区 应满足排水、管线和建筑等设施的使用要求
注：1 工后差异沉降的度量水平距离为 50m。

2 对于跑道和滑行道，当为软弱土地基时，可取表中高值；当为高填方地基时，填筑级配良好的碎石土 可取表中低值，填筑细粒土或软弱土地基可取表中高值。
3 对于机坪，当面积大于 20000m²时，可取表中低值；当面积小于或等于 20000m²时，可取表中高值。


4.2.2 飞行区道面影响区和飞行区土面区以外其他场地分区的沉降变形应符合国家现行有关技 术标准的规定。

4.3 边坡稳定性指标


4.3.1 边坡稳定性分析的强度参数，应根据填料及地基土代表性土样的室内试验及现场情况确 定。填方边坡稳定性分析强度参数 c、φ 值宜采用表 4.3.1 的试验方法确定。
表 4.3.1 填方边坡稳定性分析采用的强度参数试验方法

位 置 施工期 运行期 备 注
填筑体 部分 三轴不排水剪切试验、 直接剪切快剪试验 三轴固结不排水剪切试验、 直接剪切固结快剪试验 可能被地下水浸没部分应采用饱水 试件进行试验

天然地基 部分
三轴固结不排水剪切试验、直接剪切固结快剪试验 对薄弱或软弱土层宜采用三轴不排 水剪切试验或直接剪切快剪试验；可能 被地下水浸没部分应采用饱水试件进 行试验

4.3.2 填方边坡稳定安全系数不得小于表 4.3.2 所列数值。强度指标可按本规范第 4.3.1 条确定。

表 4.3.2 填方边坡稳定安全系数

分析项目 计算方法 计算工况 稳定安全系数


填筑体稳定性

简化 Bishop 法、 数值分析法 正常条件下 1.30～1.35
暴雨或连续降雨条件下 1.10～1.20
地震条件下 1.02～1.05



填筑体与地基整体稳定性


简化 Bishop 法、 数值分析法 正常条件下，地基土固结度为 1 1.35～1.40
正常条件下，地基土按实际固结度 1.30～1.35
暴雨或连续降雨条件下 1.10～1.20
地震条件下 1.02～1.05


填筑体与地基整体稳定性
（若沿已知层面滑动）

不平衡推力法、 数值分析法 正常条件下 1.25～1.30
暴雨或连续降雨条件下 1.10～1.20
地震条件下 1.02～1.05
注：1 表中“正常条件”指不考虑地震、暴雨或连续降雨。

2 粗粒料填筑时，采用线性抗剪强度指标计算按表中取值，采用非线性抗剪强度指标计算应适当提高。

3 边坡高度较大或边坡失稳危害较大时，稳定安全系数取大值。


4.3.3 挖方边坡应符合《民用机场飞行区技术标准》MH5001 关于障碍物限制面的规定，稳定性 控制标准可按《公路路基设计规范》JTG D30 关于挖方路基边坡规定执行。

4.4 地基设计控制指标


4.4.1 飞行区道面影响区和填方边坡稳定影响区应均匀、密实，其他区域应基本均匀、密实，土 石方压实指标应符合下列规定：
1 一般情况下，土石方压实指标应符合现行民用机场道面设计规范的规定；
2 高填方机场土方填筑压实指标应符合表 4.4.1 的规定。

表 4.4.1 高填方机场土方压实指标

部 位 道基顶面或地势设计标高以下深度（m） 压实度（%）



飞行区道面影响区
填方 0～4.0 ≥96
＞4.0 ≥95

挖方及零填 0～0.3 ≥96
0.3～0.8 ≥94







飞行区土面区



填方
跑道端安全区 0～0.8 ≥90
＞0.8 ≥88

升降带平整区 0～0.8 ≥90
＞0.8 ≥88
其他土面区 ＞0 ≥88

挖方 及 零填 跑道端安全区 0～0.3 ≥90
升降带平整区 0～0.3 ≥90
其他土面区 0～0.3 ≥88
航站区 填方 ＞0 ≥93
工作区 填方 ＞0 ≥90
预留发展区 填方 ＞0 ≥88
填方边坡稳定影响区 填方 ＞0 ≥93
注：1 表中深度，对飞行区道面影响区自道基顶面起算，对其他场地分区自地势设计标高起算。

2 表中压实度系按《土工试验方法标准》GB/T 50123 重型击实试验法求得；在多雨潮湿地区或当土质为 高液限的粘土时，根据现场实际情况，可将表中的压实度降低 1%～2%。
3 高填方机场石方填筑压实指标宜采用固体体积率，具体指标由试验或石料性质确定。

4 各场地分区内建（构）筑物的地基压实指标尚应符合国家现行有关技术标准的规定。


4.4.2 道基反应模量（k0 值）宜符合表 4.4.2 的规定。

表 4.4.2 道基反应模量（k0 值）指标

道基土类 k0 值（MN/m³）
粘性土、细粒土 ≥40
粗粒土 ≥60
块（碎）石 ≥80

4.4.3 道床填料加州承载比（CBR 值）应符合表 4.4.3 的规定。

表 4.4.3 道床填料加州承载比（CBR 值）指标


填挖类型
道基顶面以下深度（m） CBR 值（%）
飞行区指标Ⅱ为 A、B 飞行区指标Ⅱ为 C、D、E、F

填方 0～0.3 ≥6 ≥8
0.3～0.8 ≥4 ≥5

挖方及零填 0～0.3 ≥6 ≥8
0.3～0.8 — ≥4
注：飞行区指标划分采用《民用机场飞行区技术标准》MH5001 的规定。



5 岩土工程设计计算

5.1 一般规定


5.1.1 飞行区岩土工程设计应进行变形计算，涉及边坡的区域应进行稳定性计算。
5.1.2 航站区、工作区和预留发展区场地平整的岩土工程设计，高填方工程应进行稳定性计算， 填海工程应进行变形及稳定性计算。
5.1.3 岩土工程设计计算应根据试验和专项研究成果，选取或调整计算参数。