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contributor authorKeri L. Ryan
contributor authorNhan D. Dao
date accessioned2017-12-30T13:00:12Z
date available2017-12-30T13:00:12Z
date issued2016
identifier other%28ASCE%29ST.1943-541X.0001352.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4244393
description abstractThis paper focuses on a horizontal-vertical coupling effect observed in a full-scale shake table experiment of a 5-story moment frame building isolated with triple pendulum bearings. A significant increase or amplification of the horizontal floor accelerations was observed during three-dimensional (3D) shaking compared to XY (horizontal only) shaking with comparable input motions. The coupling phenomenon is explained by analytical and numerical simulation of a single degree-of-freedom (rigid mass) structure and multistory cantilever structure subjected to simplified sinusoidal motions, both isolated with triple pendulum bearings. The results of the simplified numerical study are extended to explain the horizontal-vertical coupling in the full-scale experiment, which are also validated by numerical modeling of the test structure. The vertical component of ground acceleration is shown to introduce a high-frequency component into the base shear that can excite higher modes of the base-isolated structure. The phenomenon is possible in any multistory structure isolated with friction bearings, and should be evaluated on a case-by-case basis.
publisherAmerican Society of Civil Engineers
titleInfluence of Vertical Ground Shaking on Horizontal Response of Seismically Isolated Buildings with Friction Bearings
typeJournal Paper
journal volume142
journal issue1
journal titleJournal of Structural Engineering
identifier doi10.1061/(ASCE)ST.1943-541X.0001352
page04015089
treeJournal of Structural Engineering:;2016:;Volume ( 142 ):;issue: 001
contenttypeFulltext


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