Response of Tall Guyed Telecommunication Masts to Seismic Wave Propagation
Abstract eng: Tall telecommunication masts are slender structures whose lateral resistance is provided by clusters of guy cables anchored to the ground at several support points. The main goal of this study is to demonstrate the importance of considering realistic three-dimensional ground motion with asynchronous input when evaluating the seismic response of these tall multi-support structures. Three existing masts with heights of 213, 313 and 607 m and different guy cable arrangements have been modeled and investigated in detail with three classical historical earthquake records using a commercial finite element program (ADINA). Both synchronous and asynchronous ground shaking were considered. The effect of asynchronism in multiple support excitations was studied by varying the shear wave velocity of the surface traveling wave corresponding to different degrees of soil stiffness. The three towers have shown sensitivity to asynchronous shaking of their supports. More severe response was obtained for softer soil conditions, and the 607 m mast was sensitive even for relatively stiff soils.
Contributors:
Conference Title:
Conference Title:
14th World Conference on Earthquake Engineering
Conference Venue:
Bejing (CN)
Conference Dates:
2008-10-12 / 2008-10-17
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
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Record created 2014-12-05, last modified 2014-12-05
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