Abstract
Tall building structures are susceptible to large sway motions when subjected to earthquake excitations. They are particularly affected by long period earthquake ground motions. These low frequency seismic waves resonate with the fundamental mode of the building structure which in turn causes resonance interactions with long slender continua deployed in modular non-structural installations, such as lifts. Damage due to large resonance motions of suspension/compensating ropes and cables during earthquake are one of the most common modes of failure in high-rise lift installations. In this paper an analytical model to predict the dynamic responses of a suspension rope system installed in a tall host structure under seismic conditions is presented. The model is then used to predict the dynamic performance of the system under earthquake excitations. The predictions can then be used to develop suitable mitigating strategies and protective measures to minimize the earthquake damage.
Highlights
Damageduetol ar g e r es onancem oti o ns of s us p e nsi o n/ compe ns ati ngrop es andca bl es d uri n g e art hquake ar e o n e of t h e m ost commonmod es of f ail ur e i n hi g h-ris e lift i nst all a ti o ns
I n t his p a p er a n a n al yti c al m o d el t o pr e di ct thedyna mi c r es p o ns es of a s us p e nsi onropes yst e m i nst all edinat all h ost str u ct ur e u n d er s eis mi c c o n diti o ns is pr es e nt e d
T h e pr e di cti o ns canthenbe us edtodev el o p s uit a bl e miti g ati n g str at e gi es a n d pr ot e cti v e m e as ur es t o mi ni mi zethee art hquakedamage
Summary
- The nonstationary, nonlinear dynamic interactions in slender continua deployed in high-rise vertical transportation systems in the modern built environment S Kaczmarczyk. 1. I nt r o d u cti onLong- p eri o d gr oundm oti o n e x cit ati o ns inducedby dist a nt e art hquak es c a n r es ult i n r es onanceandl ar g e s eis mi c r es p o ns es of hi g h-ris e b uil di n gs i n t he m o d er nmega citi es l o c at edinthei ntr a- pl at e r e gi o ns s u c h as HongKong, Shangh ai, N e w Y or k, Si n g a p or eandDub ai [ 1]. A n y f urt h er distri b uti o n of t his w or k m ust m ai nt ai n attri b uti ontothea ut h or(s) andthe titl e of t h e w or k, j o ur n al cit ati onandD OI
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