Seismic response analysis of soil profile: comparison of 1D versus 2D models and parametric study

2020 ◽  
Vol 6 (2) ◽  
pp. 1017-1026
Author(s):  
Navid Soltani ◽  
Mohammad Hossein Bagheripour
Keyword(s):  
Seismic Response ◽  
Soil Profile ◽  
Parametric Study ◽  
Response Analysis ◽  
Seismic Response Analysis

Nonstationary Probabilistic Seismic Response Analysis of Nonlinear Soil Profile under Bidirectional Dynamic Loading

2012 ◽  
Vol 193-194 ◽  
pp. 949-953
Author(s):  
Xiao Dong Pan ◽  
Jia En Zhong ◽  
Chao Chao He
Keyword(s):  
Spectral Density ◽  
Seismic Response ◽  
Ground Motion ◽  
Power Spectral Density ◽  
Soil Profile ◽  
Response Analysis ◽  
Time Varying ◽  
Seismic Response Analysis ◽  
Dynamic Reliability ◽  
Power Spectral

In this paper, according to the characteristics of near-fault earthquakes, combined with the strong ground motion attenuation law in China, the nonstationary power spectrum of bidirectional ground motion input is obtained through random vibration analysis. By introducing the pseudo excitation algorithm, the evolutionary power spectral density (PSD) of acceleration at the engineering bedrock is handled as the nonstationary pseudo input, and the Hardin-Drnevich hyperbolic model is utilized to take into account the nonlinearity of soil layer. On this basis, finite element method in the time domain and frequency domain are used for seismic response analysis of soil profile. Values including various time-varying power spectral density of the dynamic response, time varying RMS and time-dependent reliability at different threshold can be obtained by calculating, which provides a basis for the analysis of the foundation dynamic reliability assessment.

A Parametric Study for the Seismic Response Analysis of a Nuclear Reactor Building by Using a Three-Dimensional Finite Element Model

2016 ◽  
Author(s):  
Byunghyun Choi ◽  
Akemi Nishida ◽  
Norihiro Nakajima
Keyword(s):  
Finite Element ◽  
Research And Development ◽  
Finite Element Model ◽  
Seismic Response ◽  
Parametric Study ◽  
Three Dimensional ◽  
Element Model ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Uncertainty Parameters

Research and development of three-dimensional vibration simulation technologies for nuclear facilities is one mission of the Center for Computational Science and e-Systems of the Japan Atomic Energy Agency (JAEA). A seismic intensity of upper 5 was observed in the area of High-Temperature Engineering Test Reactor (HTTR) at the Oarai Research and Development Center of JAEA during the 2011 Tohoku earthquake. In this paper, we report a seismic response analysis of this earthquake using three-dimensional models of the HTTR building. We performed a parametric study by using uncertainty parameters. Furthermore, we examined the variation in the response result for the uncertainty parameters to create a valid 3D finite element model.

scholarly journals A Parametric Study of Nonlinear Seismic Response Analysis of Transmission Line Structures

2014 ◽  
Vol 2014 ◽  
pp. 1-9
Author(s):  
Li Tian ◽  
Yanming Wang ◽  
Zhenhua Yi ◽  
Hui Qian
Keyword(s):  
Transmission Line ◽  
Seismic Response ◽  
Parametric Study ◽  
Ground Motions ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Nonlinear Seismic Response ◽  
Local Site ◽  
Wave Passage ◽  
Coherency Loss

A parametric study of nonlinear seismic response analysis of transmission line structures subjected to earthquake loading is studied in this paper. The transmission lines are modeled by cable element which accounts for the nonlinearity of the cable based on a real project. Nonuniform ground motions are generated using a stochastic approach based on random vibration analysis. The effects of multicomponent ground motions, correlations among multicomponent ground motions, wave travel, coherency loss, and local site on the responses of the cables are investigated using nonlinear time history analysis method, respectively. The results show the multicomponent seismic excitations should be considered, but the correlations among multicomponent ground motions could be neglected. The wave passage effect has a significant influence on the responses of the cables. The change of the degree of coherency loss has little influence on the response of the cables, but the responses of the cables are affected significantly by the effect of coherency loss. The responses of the cables change little with the degree of the difference of site condition changing. The effect of multicomponent ground motions, wave passage, coherency loss, and local site should be considered for the seismic design of the transmission line structures.

SEISMIC RESPONSE ANALYSIS OF THE BUILDING FOUNDATION BASED ON THE DEFORMATION PERFORMANCE TESTS OF PHC-PILE

1999 ◽  
Vol 5 (9) ◽  
pp. 71-76
Author(s):  
Takao MATSUMURA ◽  
Shinichiro ASANO ◽  
Jun YAMADA ◽  
Masao KOBA ◽  
Koji ITO ◽  
...  
Keyword(s):  
Seismic Response ◽  
Response Analysis ◽  
Performance Tests ◽  
Seismic Response Analysis ◽  
Building Foundation

Elastic-Plastic Seismic Response Analysis on the Special-Shaped Chimney

2014 ◽  
Vol 711 ◽  
pp. 520-524 ◽  
Author(s):  
Huan Qin Liu ◽  
Wei Bin Li ◽  
Ruo Yang Wu ◽  
Lin Fei Yan
Keyword(s):  
Seismic Response ◽  
Dynamic Performance ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Elastic Plastic ◽  
Loading Mode ◽  
Loading Patterns ◽  
Displacement Angle

Based on one 240-meter-high special-shaped RC chimney, the structure’s dynamic performance and elastic-plastic seismic response analysis has been studied in detail. From the analysis, it demonstrates the weak areas in the chimney. The interlayer displacement angle about corresponding performance points under four kinds of loading mode were also acuired, and the response of four loading patterns were analyzed.

Seismic Response Analysis of Soil-Structure Interaction on Base Isolation Structure

2013 ◽  
Vol 663 ◽  
pp. 87-91
Author(s):  
Ying Bo Pang
Keyword(s):  
Finite Element ◽  
Seismic Response ◽  
Soil Structure ◽  
Base Isolation ◽  
Soil Structure Interaction ◽  
Response Analysis ◽  
Analysis Model ◽  
Seismic Response Analysis ◽  
Structure Interaction ◽  
Calculation Results

As an effective way of passive damping, isolation technology has been widely used in all types of building structures. Currently, for its theoretical analysis, it usually follows the rigid foundation assumption and ignores soil-structure interaction, which results in calculation results distortion in conducting seismic response analysis. In this paper, three-dimensional finite element method is used to establish finite element analysis model of large chassis single-tower base isolation structure which considers and do not consider soil-structure interaction. The calculation results show that: after considering soil-structure interaction, the dynamic characteristics of the isolation structure, and seismic response are subject to varying degrees of impact.

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