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Reliability assessment of an OVH HV power line truss transmission tower subjected to seismic loading
Abstract
The study focuses on the reliability of a transmission tower OS24 ON150 + 10, an element of an OVH HV power line, under seismic loading. In order to describe the seismic force, the real-life recording of the horizontal component of the El Centro earthquake was adopted. The amplitude and the period of this excitation are assumed random, their variation is described by Weibull distribution. The possible space state of the phenomenon is given in the form of a structural response surface (RSM methodology), approximated by an ANOVA table with directional sampling (DS) points. Four design limit states are considered: stress limit criterion for a natural load combination, criterion for an accidental combination (one-sided cable snap), vertical and horizontal translation criteria. According to these cases the HLRF reliability index β is used for structural safety assessment. The RSM approach is well suited for the analysis – it is numerically efficient, not excessively time consuming, indicating a high confidence level. Given the problem conditions, the seismic excitation is shown the sufficient trigger to the loss of load-bearing capacity or stability of the tower.
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- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Title of issue:
- 9th Polish National Conference on Applied Mechanics strony 1 - 11
- Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Winkelmann K., Jakubowska P., Sołtysik B..: Reliability assessment of an OVH HV power line truss transmission tower subjected to seismic loading, W: 9th Polish National Conference on Applied Mechanics, 2017, ,.
- DOI:
- Digital Object Identifier (open in new tab) 10.1063/1.4977690
- Verified by:
- Gdańsk University of Technology
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