Foundation Engineering for Transmission Line Structures

An overview is given of the development and practice of foundation engineering for electrical transmission line structures (TLS). The evolution of this specialty field has been very different from its evolution for building and/or bridge structures. The differences involved are substantial and relate to the structure types, loading, threat to life, ground assessment over long corridors, construction issues, and various other factors. Unfortunately, these key issues are not addressed in traditional references such as textbooks or design manuals, and they are not covered in standard university courses in foundation engineering. Accordingly, designers, constructors, and others in the electric utility industry have developed alternative approaches toward foundation engineering for TLS. This paper presents an overview of this specialty field and discusses some pertinent issues regarding the structures, loading, foundations, geotechnical assessment, design philosophy, and construction issues.

[1]  Kok-Kwang Phoon,et al.  Reliability-Based Design of Foundations for Transmission Line Structures , 2006 .

[2]  Fred H. Kulhawy,et al.  On the Axial Behavior of Drilled Foundations , 2004 .

[3]  F. H. Kulhawy,et al.  Field evaluation of grillage foundation uplift capacity , 1990 .

[4]  Kok-Kwang Phoon,et al.  Engineering Judgment in the Evolution from Deterministic to Reliability-Based Foundation Design , 1996 .

[5]  K. Phoon,et al.  Characterization of Geotechnical Variability , 1999 .

[6]  Fred H. Kulhawy,et al.  Overview of Some EPRI Research for Transmission Line Structure Foundations , 2002 .

[7]  Kok-Kwang Phoon,et al.  Evaluation of Geotechnical Property Variability , 1999 .

[8]  Widjojo A. Prakoso,et al.  Capacity of Foundations on Discontinuous Rock , 2006 .

[9]  Fred H. Kulhawy,et al.  Drilled Shaft Foundations , 1991 .

[10]  Fred H. Kulhawy,et al.  Uplift Behavior of Shallow Soil Anchors—An Overview , 1985 .

[11]  J. F. Beech,et al.  Transmission-line structure foundations for uplift-compression loading. Final report , 1983 .

[12]  Kok-Kwang Phoon,et al.  Multiple Resistance Factor Design for Shallow Transmission Line Structure Foundations , 2003 .

[13]  Asce,et al.  Guidelines for Electrical Transmission Line Structural Loading , 1991 .

[14]  Fred H. Kulhawy,et al.  Manual on estimating soil properties for foundation design , 1990 .

[15]  Fred H. Kulhawy,et al.  Drilled Shaft Design for Transmission Structures Using LRFD and MRFD , 2002 .

[16]  Kok-Kwang Phoon,et al.  Development of a reliability-based design framework for transmission line structure foundations , 2003 .

[17]  Widjojo A. Prakoso,et al.  Issues in Evaluating Capacity of Rock Socket Foundations , 2008 .

[18]  Fred H. Kulhawy,et al.  Spread Foundations in Uplift: Experimental Study , 1987 .

[19]  Fred H. Kulhawy,et al.  On the uplift behaviour of spread foundations , 2003 .