Application of reliability based design concepts to transmission line structure foundations

Author

DiGioia, Anthony M., Jr. ; Rojas-Gonzalez, Luis F.

Author_Institution

GAI Consultants Inc., Monroeville, PA, USA

Volume

6

Issue

1

fYear

1991

fDate

1/1/1991 12:00:00 AM

Firstpage

352

Lastpage

358

Abstract

A procedure is proposed for the design of power transmission line structure foundations using a probability-based load and resistance factor design (LRFD) format. This procedure involves the determination of a foundation strength factor, φ_F, which is used as a multiplier of the calculated nominal design strength to estimate the 5% exclusion limit strength required in the LRFD equation. Statistical analysis of the results from full-scale load tests are used to obtain φ_F values applicable to various nominal design strength equations for drilled shafts subjected to uplift loads. These results clearly illustrate the significant economic benefits of conducting more detailed subsurface investigations for the design of transmission line structure foundations. A design example is presented

Keywords

design engineering; poles and towers; power overhead lines; reliability; statistical analysis; drilled shafts; poles and towers; power transmission line; probability-based load and resistance factor design; reliability; statistical analysis; strength; structure foundations; uplift loads; Buildings; Calibration; Design methodology; Power transmission lines; Probability; Shafts; Statistical analysis; Testing; Transmission lines; Uncertainty;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.103758

Filename

103758