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Tài liệu tham khảo giáo trình cơ học kết cấu trong ngành xây dựng bằng Tiếng Anh - Yamaguchi, E. “Basic Theory of Plates and Elastic Stability” Structural Engineering Handbook Ed. Chen Wai-Fah Boca Raton: CRC Press LLC, 1999 - Transmission Structures | Fang S.J. Roy S. and Kramer J. Transmission Structures Structural Engineering Handbook Ed. Chen Wai-Fah Boca Raton CRC Press LLC 1999 Transmission Structures Shu-jin Fang Subir Roy and Jacob Kramer Sargent Lundy Chicago IL 15.1 Introduction and Application Application Structure Configuration and Material Con-structibility Maintenance Considerations Structure Families State of the Art Review 15.2 Loads on Transmission Structures General Calculation of Loads Using NESC Code Calculation of Loads Using the ASCE Guide Special Loads Security Loads Construction and Maintenance Loads Loads on Structure Vertical Loads Transverse Loads Longitudinal Loading 15.3 Design of Steel Lattice Tower Tower Geometry Analysis and Design Methodology Allowable Stresses Connections Detailing Considerations Tower Testing 15.4 Transmission Poles General Stress Analysis Tubular Steel Poles Wood Poles Concrete Poles Guyed Poles 15.5 Transmission Tower Foundations Geotechnical Parameters Foundation Types Selection and Design Anchorage Construction and Other Considerations Safety Margins for Foundation Design Foundation Movements Foundation Testing Design Examples 15.6 Defining Terms References 15.1 Introduction and Application Transmission structures support the phase conductors and shield wires of a transmission line. The structures commonly used on transmission lines are either lattice type or pole type and are shown in Figure 15.1. Lattice structures are usually composed of steel angle sections. Poles can be wood steel or concrete. Each structure type can also be self-supporting or guyed. Structures may have one of the three basic configurations horizontal vertical or delta depending on the arrangement of the phase conductors. 15.1.1 Application Pole type structures are generally used for voltages of 345-kV or less while lattice steel structures can be used for the highest of voltage levels. Wood pole structures can be economically used for relatively shorter spans and lower voltages. In .
