Parametric analysis of the seismic response of a 2D sedimentary valley: implications for code implementations of complex site effects

2005 ◽  
Vol 25 (4) ◽  
pp. 303-315 ◽  
Author(s):  
Konstantia Makra ◽  
Francisco J. Chávez-García ◽  
Dimitrios Raptakis ◽  
Kyriazis Pitilakis
Keyword(s):  
Seismic Response ◽  
Parametric Analysis ◽  
Site Effects

scholarly journals Inelastic Parametric Analysis of Seismic Responses of Multistorey Bidirectional Eccentric Structure

2018 ◽  
Vol 2018 ◽  
pp. 1-20
Author(s):  
Yu-ping Kuang ◽  
Xin-liang Jiang ◽  
Nan Jiang
Keyword(s):  
Seismic Response ◽  
Parametric Analysis ◽  
Coupling Effect ◽  
Parameter Analysis ◽  
Seismic Responses ◽  
Load Direction ◽  
General Law ◽  
Eccentric Structure ◽  
Natural Frequency Variation ◽  
Elastic Stage

This paper conducts a parametric study on the seismic response of multistorey bidirectional eccentric structures from elastic stage to inelastic stage. Based on a simplified multistorey bidirectional eccentric model composed of bidirectional lateral load-resisting members, a general law is proposed for three-stage natural frequency variation behaviour from elastic stage to inelastic stage of eccentric frame structures with different layers. Different simplification treatments are conducted on each stage and the three stable parameter analysis stages are defined. The corresponding dynamic stiffness matrices and motion equations in different loading stages are derived. On this basis, a parametric analysis of seismic response of a three-storey bidirectional regular eccentric structure from elastic stage to inelastic stage is conducted. Effects of the uncoupled torsion to lateral frequency ratios (Ω) and bidirectional eccentricities on the seismic responses are investigated. The results reveal that as Ω increases, translational displacement in the load direction first decreases and then increases; meanwhile, the displacement perpendicular to load direction and torsion displacement first rise and then decrease sharply. When Ω=1.1, the coupling effect between the translation in the load direction and the torsion is at its strongest condition. Increasing the eccentricities leads to a decrease in the displacement in the load direction as well as an increase in the displacement perpendicular to load direction and torsion displacement. Variation regularity of inelastic seismic response is remarkably different from that in elastic stage. The lateral-torsional coupling effect of the bidirectional eccentric structure is closely related to both the period ratio and the bidirectional eccentricities.

scholarly journals On Predicting the Seismic Response of Acceleration-Sensitive Non-Structural Components in Buildings

2018 ◽  
Author(s):  
Carmine Lima ◽  
Enzo Martinelli
Keyword(s):  
Dynamic Response ◽  
Seismic Response ◽  
Parametric Analysis ◽  
Short Review ◽  
Structural Components ◽  
Main Structure ◽  
Current State ◽  
Critical Issues ◽  
Key Features ◽  
Two Degree Of Freedom

This paper is intended at highlighting the main mechanical parameters controlling the behavior of the so-called "acceleration-sensitive" Non-Structural Components (NSCs). In the first part a short review of the current state of knowledge and the critical issues related to the prediction of the seismic response of NSCs is reported. Then, the paper presents the results of a numerical parametric analysis intended to capture the key features of the dynamic response of a two-degree-of-freedom (2DOF) system which is supposed to be representative of both the main structure and the "non-structural" component (NSC). Particularly, it allows to simulate the coupled behaviour of both main structure and NSC and evaluating their response. The main parameters controlling the dynamic response of NSCs emerge from this study, which could pave the way towards formulating more mechanically consistent relationships for evaluating the maximum accelerations induced by seismic shakings on NSCs.

A STUDY OF SITE EFFECTS AND SEISMIC RESPONSE OF AN INSTRUMENTED BUILDING IN MEXICO CITY

1998 ◽  
Vol 2 (1) ◽  
pp. 89-111 ◽  
Author(s):  
R. MELI ◽  
E. FACCIOLI ◽  
D. MURIA-VILA ◽  
R. QUAAS ◽  
R. PAOLUCCI
Keyword(s):  
Seismic Response ◽  
Mexico City ◽  
Site Effects

Site effects on the seismic response of a suspension bridge

1996 ◽  
Vol 18 (5) ◽  
pp. 363-370 ◽  
Author(s):  
M. Rassem ◽  
A. Ghobarah ◽  
A.C. Heidebrecht
Keyword(s):  
Seismic Response ◽  
Site Effects ◽  
Suspension Bridge
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