1 Scope
1.0.1 This regulation is applicable to the design for newly-built tower and pole structures of 110kV~500kV overhead transmission line, and the design for communication tower and pole may be adopted by reference to this regulation.
1.0.2 The tower and pole structures of temporary transmission line may be designed by reference to this regulation, but the standard may be reduced properly.
1.0.3 For the boosting renovation and reconstruction of the original transmission line, the tower and pole structures may be checked and designed by reference to this regulation according to the specific conditions and the operating experience of the existing line.
Contents
Foreword I
1 Scope
2 Normative References
3 General Provisions
4 Terms and Symbols
5 Load
6 Materials
7 Basic Requirements
8 Member Calculation and Section Selection
9 Connection Calculation
10 Construction Requirements
Appendix A (Normative) Specification and Characteristic Value of Strength of Galvanized Steel Strand (N/mm2)
Appendix B (Normative) Double Pole Stress Distribution
Appendix C (Normative) Truss Internal Force Analysis Simplification
Appendix D (Normative) Stability Coefficient φ of Axial Compression Members of Steel Towers
Appendix E (Normative) Critical Wind Speed Vcr Curve for Oscillation Starting of Equal-diameter Steel Pipes (First Oscillation Mode)
Appendix F (Normative) Calculation of Oblique Section Bearing Capacity for Annular Concrete Poles
Appendix G (Normative) Explanation of Wording
