Earthquake Response Analysis of Soils from Rudrapur and Khatima Sites Adjacent to Himalayan Frontal Thrust (HFT) using Field and Laboratory-Derived Dynamic Soil Properties

2019 ◽  
pp. 1-31 ◽  
Author(s):  
Sambit Prasanajit Naik ◽  
Abhijit Kundu ◽  
Nihar Ranjan Patra ◽  
Srijit Bandopadhaya ◽  
G. Rami Reddy
Keyword(s):  
Soil Properties ◽  
Earthquake Response ◽  
Response Analysis ◽  
Himalayan Frontal Thrust ◽  
Dynamic Soil Properties ◽  
Earthquake Response Analysis

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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