NDLI: Study on the Limited Values of Foundation Deformation for a Typical UHV Transmission Tower

Content Provider	IEEE Xplore Digital Library
Author	Fengli Yang Jingbo Yang Junke Han Zifu Zhang
Copyright Year	1986
Abstract	The tower foundation above the goal of the coal mine is easily deformed, which causes a serious threat to the safe operation of ultra-high voltage (UHV) transmission lines. In this paper, the finite-element model of a typical 1000-kV UHV ac transmission tower was established in general software ANSYS, and the axial forces of the members as well as their variation trends were analyzed under different load cases, which include foundation settlement, slip, and inclination combined with normal design cases. Limited values of the foundation deformation under different cases for the analyzed tower were determined. It shows that the limited values of longitudinal deformation, transverse deformation, nonuniform settlement, and horizontal slip are decreased, in turn, with the same external loads. The limited value of the foundation deformation under 60° wind is the minimum, which is the control load case of the foundation deformation. The limited value of nonuniform settlement through computation is lower than that of the current regulation, and it is dangerous to evaluate the stress state by the regulation method. In the righting process of the tower with foundation deformation, the axial forces of the members are not more than than the critical bearing capacities except the horizontal slip case, and the tower is in a safe state.
Sponsorship	IEEE Power Engineering Society
Starting Page	2752
Ending Page	2758
Page Count	7
File Size	608006
File Format	PDF
ISSN	08858977
Volume Number	25
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Load modeling Current control Finite element methods Power transmission lines Fuel processing industries ultra-high voltage (UHV) transmission tower Foundation deformation goaf of coal mine limited values righting
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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