1 Scope
1.0.1 This standard specifies the basic principles and relevant design methods for the foundation design of overhead transmission line tower.
1.0.2 This standard is applicable to the foundation design of the newly-built 35kV~500kV overhead transmission line tower. The design of the foundation of other voltage grades and communication towers may refer to this standard.
1.0.3 The foundation of the temporary overhead transmission line tower may be designed by reference to this standard, but the standard may be reduced properly.
1.0.4 The foundation of the renovated and rebuilt overhead transmission line tower may be checked or designed by reference to this standard according to the specific conditions and the existing line operation experience.
2 Normative References
Contents
1 Scope
2 Normative References
3 General Provisions
4 Terms and Symbols
4.1 Terms
4.2 Symbols
5 Basic Requirements
6 Up-pull Stability Calculation
6.1 Applicable Conditions
6.2 Shearing Method
6.3 Soil Weight Method
7 Foundation Pushing and Foundation Calculation
7.1 Foundation Pushing Calculation
7.2 Calculation of Foundation Bearing Capacity
7.3 Foundation Deformation Calculation
8 Overturning Stability Calculation
8.1 Overturning Stability Calculation of Pole Foundation
8.2 Calculation of Overturning Stability of Shallow Foundation of Narrow-foundation Steel Tower
8.3 Calculation of Overturning Stability of Deep Foundation of Narrow-foundation Steel Tower
8.4 Calculation of Overturning Stability of Foundation of Wide-foundation Steel Tower
8.5 Retaining Wall
9 Bearing Capacity Calculation and Construction Requirements of Members
9.1 Calculation of Normal Section Bearing Capacity of Main Column of Reinforced Concrete Foundation
9.2 Calculation of Normal Section Bearing Capacity of Main Column of Concrete Foundation
9.3 Calculation of Normal Section Bearing Capacity of Bottom Slab of Reinforced Concrete Foundation
9.4 Calculation of Normal Section Bearing Capacity of Bottom Slab of Reinforced Concrete Foundation
9.5 Calculation of Bearing Capacity of Reinforced Concrete Stay Wire Coil
9.6 Calculation of Bearing Capacity of Chuck of Reinforced Concrete Pole
9.7 Calculation of Bearing Capacity of Stone Chassis, Stay Wire Coil and Chuck
9.8 Calculation of Bearing Capacity of Foundation Bolt
9.9 Calculation of Bearing Capacity of Stay Wire Component
9.10 Calculation of Bearing Capacity of Inclined Section
9.11 Construction Requirements
9.12 Calculation of Bearing Capacity of Pad and Chimney Foundation
10 Rock Anchor Foundation
10.1 Classification and Applicable Conditions of Foundation
10.2 Calculation of Bearing Capacity of Foundation
10.3 Construction Requirements
11 Bored (Punched, Excavated) Cast-in-situ Pile Foundation
11.1 General Requirements
11.2 Construction of Pile Foundation
11.3 Calculation for Effect of Pile Top Action
11.4 Calculation of the Pushing Bearing Capacity of Pile
11.5 Calculation of the Up-pull Bearing Capacity of Pile
11.6 Calculation for the Horizontal Bearing Capacity and Displacement of the Pile
11.7 Calculation of Pile Proper
11.8 Quality Inspection Standard
12 Combined Sink Well Foundation
12.1 Combined Sink Well Foundation
12.2 Data Necessary to Design Combined Sink Well Foundation
12.3 Design Principles
12.4 Construction of Combined Sink Well Foundation
12.5 Design Calculation
12.6 Problem Noted in Engineering Applications and Construction
13 Assembly Foundation
13.1 Classification and Applicable Conditions of Foundation
13.2 Stability Calculation for Lateral Overturning of Hinged Stud Foundation
13.3 Stability Calculation for Lateral Slip of Hinged Stud Foundation
13.4 Calculation of Foundation Bearing Capacity
13.5 Construction Requirements
Appendix A (Normative) Foundation Type
Appendix B (Normative) Design Principle for Construction Baseplane of Tower Position
Appendix C (Normative) Special Foundation Treatment Principle
Appendix D (Normative) Strength Calculation for Metal Foundation Bearing Capacity
Appendix E (Normative) Characteristic Value of Bearing Capacity and Classification of Foundation Soil (Rock)
Appendix F (Normative) Internal Force and Displacement Calculation for Pile under the Action of Horizontal Load
Appendix G (Normative) Approximate Calculation of Lateral Bending Moment where Soil Resistance is Considered for Rigid Pillar of Undisturbed Soil Foundation
Appendix H (Normative) Coefficient μ of Friction Resistance between Soil and Concrete Foundation Contact Surface and Net Sectional Area of Foundation Bolt
Appendix I (Normative) Main Points of Up-pull Static Load Test on Foundation of Transmission Line
Appendix J (Normative) Tables for Calculation of Foundation Up-pull, Overturning, Pushing Stability and Foundation Bearing Capacity
Appendix K (Normative) Calculation of Local Scour, Running Water Dynamic Pressure and Floater Impact Force on Foundation at Flood
