Earthquake Response Analysis of Sites in State of Haryana using DEEPSOIL Software

Puri, Nitish; Jain, Ashwani; Mohanty, Piyush; Bhattacharya, Subhamoy

doi:10.1016/j.procs.2017.12.047

Cited by 29 publications

(5 citation statements)

References 9 publications

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“…Recent studies on seismic site characterisation used 1-D linear or equivalent linear site response analysis (Phanikanth et al 2011;Mahmood et al 2016;and Puri et al 2018), in which there are a few sites with soft clay deposits. To emphasise the difference between equivalent linear and non-linear seismic site response analyses for soft clays, 1-D equivalent linear and non-linear analyses were performed on a soil model that closely represents the soft clay in the centrifuge test using DEEPSOIL software (Hashash et al 2017).…”

Section: -D Ground Response Analysis Using Deepsoilmentioning

confidence: 99%

Seismic behaviour of soft clay and its influence on the response of friction pile foundations

Garala

Madabhushi

2018

Bull Earthquake Eng

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In recent years, much of the research in geotechnical earthquake engineering has focused on liquefaction of loose, saturated sands and silts. However, the dynamic behaviour of soft, clayey soils and their interaction with pile foundations during the earthquakes have received relatively little attention. In this study, an attempt is made to investigate the dynamic behaviour of soft clay and its interaction with pile foundations during earthquakes using high gravity centrifuge testing. A model single pile and two sets of 3 × 1 row model pile groups with different pile spacing were embedded in soft kaolin clay and tested under the action of model earthquakes at 50 times the earth's gravity. The strength and stiffness of clay were evaluated using a T-bar test and an air hammer device respectively. The focus of this research is to investigate the dynamic response of friction piles in soft clay. However, this depends on the dynamic response of the soft clay layer around the pile. To this end, one-dimensional ground response analysis was performed using DEEPSOIL software to emphasise the importance of non-linear analysis in characterising the seismic behaviour of soft clays. It will be shown that clay response depends both on the earthquake intensity and the shear strength and stiffness of the clay layer. This has a direct bearing on the response of single piles and pile groups, with larger amplification occurring for small intensity earthquakes and attenuation occurring for stronger earthquakes.

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Section: -D Ground Response Analysis Using Deepsoilmentioning

confidence: 99%

Seismic behaviour of soft clay and its influence on the response of friction pile foundations

Garala

Madabhushi

2018

Bull Earthquake Eng

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“…These equations are utilized in DEEPSOIL for further calculations. The bedrock Vs value used in the analysis is 760 m/s, and the unit weight is taken as 24.5 kN/m 2 with damping of 2% [16].…”

Section: Dynamic Characterisationmentioning

confidence: 99%

Prediction of Ground Response Spectrum of Jalandhar City of Punjab using Non-Linear Ground Response Analysis

Krishna,

Kasilingam

2024

IOP Conf. Ser.: Earth Environ. Sci.

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Increasing seismicity worldwide and focus on micro zonation has amplified the importance of soil properties in the determination of seismicity. This study conducted non-linear Ground Response Analysis (GRA) to examine the impact of earthquakes on local soil conditions. DEEPSOIL v6.1 software is utilized to generate the response spectrum for 35 borehole locations in Jalandhar, Punjab. Geotechnical data are employed for this purpose. The analysis incorporated bedrock motion data obtained from PESMOS and COSMOS. The shear wave velocity is determined empirically by establishing a correlation between the standard penetration test value (SPT-N) and shear wave velocity. The average shear wave velocity at a depth of 30 meters is calculated, and based on this, the 20 borehole sites are classified using the guidelines provided by National Earthquake Hazards Reduction Program (NEHRP). The findings and outcomes of the analysis are applied and evaluated in the context of an actual construction project to gain practical insights and implications. Seismic analysis is carried out by STAAD Pro for the evaluation of base shear. Different modes of combination are employed to interpret the base shear results obtained from the analysis. The results are then compared between the site-specific response spectra and the response spectra defined by the IS code (Indian Standard code) to assess any differences or discrepancies. This comparison helps evaluate the effectiveness and accuracy of the design in relation to the specific site conditions and the regulatory requirements outlined in the IS code

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“…A damped linear elastic model of the soil system is used for the analysis. Due to soil nonlinearity for which the shear modulus is strain dependent, ProShake performs an iterative process on the linear model until both the moduli and damping ratios are compatible with the average strains and convergence is achieved at the last iteration (Shafiee et al, 2011;Puri et al, 2018). The nonlinear and hysteretic stress-strain behavior of soils under cyclic .…”

Section: Geotechnical Site Characterizationmentioning

confidence: 99%

Sensitivity analysis of input ground motion on surface motion parameters in high seismic regions: a case of Bhutan Himalaya

Tempa

Aryal²,

Chettri

et al. 2022

Nat. Hazards Earth Syst. Sci.

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Abstract. Historical earthquakes demonstrate that strong motion characteristics and local soil condition, when coupled, significantly influence seismic site response. Interestingly, most of the Himalayan earthquakes depicted anomalous behavior per the site conditions historically. Being one of the most active seismic regions on earth, the eastern fringe of the Himalaya has observed many devastating earthquakes together with non-uniform damage scenarios. To quantify such anomalies, we evaluate surface motion parameters for a soft soil deposit located in the city of Phuentsholing in western Bhutan. Using one-dimensional site response analysis, the sensitivity of ground motion variation is estimated. This study accounts for the earthquakes of moment magnitudes 6.6 to 7.5 with a wide variation in peak ground acceleration (PGA). To dissect the characteristics of six inputted ground motions on eight local ground conditions, a sensitivity analysis is performed statistically. The statistical correlation of the response datasets and the linear regression model of the bedrock outcrop and the surface motion spectral acceleration along the stratified depth are examined to quantify the variation in surface motion parameters. The results highlight that the strong motions with PGA greater than 0.34 g demonstrate greater sensitivity, leading to some anomalies in response parameters, especially amplification. Similar results were obtained for the low PGA range (<0.1 g).

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Earthquake Response Analysis of Sites in State of Haryana using DEEPSOIL Software

Cited by 29 publications

References 9 publications

Seismic behaviour of soft clay and its influence on the response of friction pile foundations

Seismic behaviour of soft clay and its influence on the response of friction pile foundations

Prediction of Ground Response Spectrum of Jalandhar City of Punjab using Non-Linear Ground Response Analysis

Sensitivity analysis of input ground motion on surface motion parameters in high seismic regions: a case of Bhutan Himalaya

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