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Title: Effect of seismic wave velocity on the dynamic response of multi-story structures on elastic foundation
Authors: Hızal, Çağlayan
Turan, Gürsoy
Keywords: Displacement loading
Static correction
Traveling wave effect
Winkler springs
Soil structure interactions
Issue Date: Oct-2018
Publisher: Elsevier Ltd.
Source: Hızal, Ç., and Turan, G. (2018). Effect of seismic wave velocity on the dynamic response of multi-story structures on elastic foundation. Soil Dynamics and Earthquake Engineering, 113, 432-441. doi:10.1016/j.soildyn.2018.06.017
Abstract: Traveling wave effects are generally considered with three main cases: (i) Wave passage effect that results with time delay in earthquake motion. (ii) incoherence effect which is defined as loss of coherency in the ground motion due to the reflection and refraction of waves, and (iii) local site effects. For multi-story structures whose supports are close to each other, the incoherence and local site effect may be omitted. In this case, traveling waves result only in a pure time delay in the earthquake motion (wave passage effect). Due to the wave passage effect of vertical and/or horizontal ground motion, the superstructure needs to be analyzed by multi-support excitation. Raft foundations cannot constrain vertical deformations and/or rotations, but they cause a diaphragm effect in the horizontal direction which results in uniform excitation. In this study, the effect of vertical earthquake motions onto multi-story buildings on elastic soil is investigated. Multi support excitation is considered by using displacement loading, which defines the equivalent seismic loads in terms of the ground displacement. According to the performed simulations of the selected structures, it is shown that structural height has a direct influence that results in member force magnifications with slow traveling wave effect. Among these, the ground floor column axial forces are most affected.
ISSN: 0267-7261
Appears in Collections:Civil Engineering / İnşaat Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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