scholarly journals ON THE CONVERSION OF A HYSTERETIC STRUCTURE INTO THE RESTORING FORCE MODEL (PART 5) : Comparison the Earthquake Response Analysis by Power Functional Hysteretic System with Dynamic Test

1978 ◽  
Vol 265 (0) ◽  
pp. 63-70
Author(s):  
TOSHIO MOCHIZUKI ◽  
HIROSHI KITAGAWA ◽  
TOSHIKAZU KOIZUMI ◽  
FUMIO NAGASHIMA
Keyword(s):  
Dynamic Test ◽  
Earthquake Response ◽  
Response Analysis ◽  
Force Model ◽  
Restoring Force ◽  
Hysteretic System ◽  
Restoring Force Model ◽  
Earthquake Response Analysis

Study on the Effect of Modified Differential Restoring Force Model on Seismic Response of Isolation Structure

2014 ◽  
Vol 501-504 ◽  
pp. 1619-1622
Author(s):  
Jian Min Jin ◽  
Ping Tan ◽  
Xiang Yun Huang ◽  
Yan Hui Liu
Keyword(s):  
Numerical Analysis ◽  
Seismic Response ◽  
Significant Error ◽  
Earthquake Response ◽  
Force Model ◽  
Acceleration Response ◽  
Shear Tests ◽  
Comparison Result ◽  
Restoring Force ◽  
Restoring Force Model

Based on the compression-shear tests of different specifications LRBs (diameter 700mm,1000mm,1100mm) and shear strain correlation formula, the modified differential restoring force model (modified Bouc-Wen model) is suggested to simulate LRB. An isolated model, nine-story superstructure, is used as the numerical example. Using the unmodified and the modified differential restoring force model of the LRB, the differences of the seismic response of isolated structure are studied by numerical analysis and comparison. Result shows that, unmodified differential restoring force model commonly used in isolation design, except for acceleration response, other earthquake response has not significant error.

Two-Dimensional Nonlinear Earthquake Response Analysis of a Bridge-Foundation-Ground System

2008 ◽  
Vol 24 (2) ◽  
pp. 343-386 ◽  
Author(s):  
Yuyi Zhang ◽  
Joel P. Conte ◽  
Zhaohui Yang ◽  
Ahmed Elgamal ◽  
Jacobo Bielak ◽  
...  
Keyword(s):  
Lateral Spreading ◽  
Soil Liquefaction ◽  
Earthquake Response ◽  
Response Analysis ◽  
Fe Model ◽  
Two Dimensional ◽  
Foundation Soil ◽  
Soil Medium ◽  
Surface Plasticity ◽  
Earthquake Response Analysis

This paper presents a two-dimensional advanced nonlinear FE model of an actual bridge, the Humboldt Bay Middle Channel (HBMC) Bridge, and its response to seismic input motions. This computational model is developed in the new structural analysis software framework OpenSees. The foundation soil is included to incorporate soil-foundation-structure interaction effects. Realistic nonlinear constitutive models for cyclic loading are used for the structural (concrete and reinforcing steel) and soil materials. The materials in the various soil layers are modeled using multi-yield-surface plasticity models incorporating liquefaction effects. Lysmer-type absorbing/transmitting boundaries are employed to avoid spurious wave reflections along the boundaries of the computational soil domain. Both procedures and results of earthquake response analysis are presented. The simulation results indicate that the earthquake response of the bridge is significantly affected by inelastic deformations of the supporting soil medium due to lateral spreading induced by soil liquefaction.

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