Seismic Response of Soil-Like Material in MSW Landfill Using Equivalent Linear Approach

2021 ◽  
pp. 293-301
Author(s):  
Kumar Shubham ◽  
Durgesh Prashad ◽  
Subhadeep Metya
Keyword(s):  
Seismic Response ◽  
Msw Landfill ◽  
Linear Approach ◽  
Equivalent Linear

Response spectrum-based seismic response of bridge embankments

2020 ◽  
Vol 57 (11) ◽  
pp. 1639-1651
Author(s):  
Juan-Carlos Carvajal ◽  
William D. Liam Finn ◽  
Carlos Estuardo Ventura
Keyword(s):  
Shear Modulus ◽  
Shear Strain ◽  
Seismic Response ◽  
Response Spectrum ◽  
Damping Ratio ◽  
Stress Profile ◽  
Cyclic Shear ◽  
Equivalent Linear ◽  
Design Response Spectrum ◽  
Peak Shear Stress

A single degree of freedom model is presented for calculating the free-field seismic response of bridge embankments due to horizontal ground shaking using equivalent linear analysis and a design response spectrum. The shear wave velocity profile, base flexibility, 2D shape, and damping ratio of the embankment are accounted for in the model. A step-by-step procedure is presented for calculating the effective cyclic shear strain of the embankment, equivalent homogeneous shear modulus and damping ratio, fundamental period of vibration, peak crest acceleration, peak shear stress profile, peak shear strain profile, equivalent linear shear modulus profile, and peak relative displacement profile. Model calibration and verification of the proposed procedure is carried out with linear, equivalent linear, and nonlinear finite element analysis for embankments with fundamental periods of vibration between 0.1 and 1.0 s. The proposed model is simple, rational, and suitable for practical implementation using spreadsheets for a preliminary design phase of bridge embankments.

Probability Analysis of Longitudinal Horizontal Nonlinear Stochastic Seismic Response of Reinforced Concrete Bridge

2012 ◽  
Vol 204-208 ◽  
pp. 2419-2423
Author(s):  
Wei Chao Chen ◽  
Wei Jun Yang ◽  
Chang Geng Sun
Keyword(s):  
Reinforced Concrete ◽  
Seismic Response ◽  
Linear Equations ◽  
Linear Method ◽  
Probability Analysis ◽  
Concrete Bridge ◽  
Reinforced Concrete Bridge ◽  
Equivalent Linear ◽  
Stochastic Seismic Response ◽  
Beam Bridge

Probability analysis of longitudinal horizontal nonlinear stochastic seismic response of reinforced concrete simply-supported beam bridge and continuous beam bridge are presented in this paper. Based on the degradative tri-linear resilience model, nonlinear equations of the structure are replaced by equivalent linear equations. The stochastic equivalent linear method and the decreasing order method of normal are adopted to calculate equivalent linear parameters, and then the stochastic seismic response of the structure can be analyzed by the linear of freedom system. Based on theoretical analysis and research, the analysis method of nonlinear stochastic seismic response of reinforced concrete bridge is put forward.

1D Time-Domain Nonlinear Analysis of Site Response under Strong Motion

2011 ◽  
Vol 94-96 ◽  
pp. 1833-1837
Author(s):  
Tao Lu ◽  
Yu Lin Lu ◽  
Jing Yan Huo
Keyword(s):  
Nonlinear Analysis ◽  
Seismic Response ◽  
Time Domain ◽  
Nonlinear Response ◽  
Linear Method ◽  
Strong Motion ◽  
Nonlinear Method ◽  
Soil Layers ◽  
Equivalent Linear ◽  
Equivalent Linear Method

The Equivalent Linear Method is a common way used in earthquake engineering to analyze nonlinear site seismic response, but the response under strong motion is underestimated by the way. For analyzing nonlinear response more veritably, in the study, a time-domain nonlinear analysis method was proposed and used in a case for 1D seismic response analysis of soil layers under strong motion. The results obviously showed that, comparing with true nonlinear method, the Equivalent Linear Method underestimated in the case in natural period range of common civil engineering structures. The true nonlinear method adopted in the study is more fitful for nonlinear response of soil layers under strong motion.

Summarization on Deterministic Seismic Response Analysis of Soil Deposits

2014 ◽  
Vol 722 ◽  
pp. 136-139
Author(s):  
Ming Zhu Guo ◽  
Qiang Zhang
Keyword(s):  
Seismic Response ◽  
Earthquake Engineering ◽  
Linear Method ◽  
Response Analysis ◽  
Engineering Practice ◽  
Seismic Response Analysis ◽  
Basic Principles ◽  
Soil Layers ◽  
Equivalent Linear ◽  
Non Linear

Seismic ground response analysis methods are categorised into linear, equivalent linear and non-linear methods that perform the analysis in the time or the frequency domain.The equivalent linear and the non-linear methods are two main methods of seismic response analysis for soil layers. The Equivalent linear method is the most common soil seismic response of a way to analyze in the current engineering practice. In recent years, the study on method of seismic response analysis of nonlinear soil layers is an important content in research domain of geotechnical earthquake engineering now. In this paper, these two methods’ basic principles are clarified briefly, Their developing courses and actualities are summarized. According to their basic principles and application practices, their merits and shortcomings are pointed out. The reasons why the merits and shortcomings appear are analyzed briefly.

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