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International Journal of Geotechnical Earthquake Engineering最新文献

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Liquefaction Behavior of Typical River Channel Deposit in Kolkata City 加尔各答典型河道沉积物的液化行为
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2023-09-05 DOI: 10.4018/ijgee.329249
Sanjay Prasad, Abhishek Mondal, Narayan Roy, R. Sahu
{"title":"Liquefaction Behavior of Typical River Channel Deposit in Kolkata City","authors":"Sanjay Prasad, Abhishek Mondal, Narayan Roy, R. Sahu","doi":"10.4018/ijgee.329249","DOIUrl":"https://doi.org/10.4018/ijgee.329249","url":null,"abstract":"Liquefaction susceptibility of river channel deposit in Kolkata city is studied using laboratory cyclic triaxial tests. River channel deposit, which supports a large part of rapidly growing urbanization of Kolkata city, mainly consists of sandy soil with little amount of silt. Cyclic triaxial tests have been performed on this soil sample with varying relative density, confining pressure, and cyclic strain amplitude. Results are presented to show how these parameters influence the pore water pressure generation within soil. Relative density, confining pressure and cyclic strain amplitude are found to affect the pore pressure generation characteristics in the soil, and the number of cycles required to reach liquefaction phenomena vary significantly. Finally, pore pressure generation characteristics are modeled using a hyperbolic model and a pore pressure generation equation is proposed for the typical river channel deposit soil. The model exhibits a certain threshold value of cyclic strain amplitude, up to which the initial rate of pore pressure generation decreases and then increases.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84381161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Higher-Order Finite Element Vibration Analysis of Circular Raft on Winkler Foundation 温克勒基础上圆筏的高阶有限元振动分析
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2023-06-08 DOI: 10.4018/ijgee.324112
A. Dutta, D. Bandyopadhyay, J. Mandal
{"title":"Higher-Order Finite Element Vibration Analysis of Circular Raft on Winkler Foundation","authors":"A. Dutta, D. Bandyopadhyay, J. Mandal","doi":"10.4018/ijgee.324112","DOIUrl":"https://doi.org/10.4018/ijgee.324112","url":null,"abstract":"On a Winkler foundation, solid circular plate vibration is examined using a higher-order finite element in polar co-ordinate system. The present formulation has developed a Mat-lab code to handle any boundary conditions. Validation of the code is carried out after the convergence studies. The results are compared to other researchers and show excellent conformity. Furthermore, a parametric analysis gave the first 10 natural frequency characteristics in tabular and graphical form. The authors conclude that the present formulation is straightforward, behaves exceptionally well for thin solid circular plates on elastic foundations with reasonable convergence rate and accuracy, and requires less computational effort, resources, and time.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85085828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Behavior of Low Height Embankment Under Earthquake Loading 地震荷载作用下低高度路堤的性能研究
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2023-01-18 DOI: 10.4018/ijgee.315798
Debabrata Ghosh, N. Roy, R. Sahu
{"title":"Behavior of Low Height Embankment Under Earthquake Loading","authors":"Debabrata Ghosh, N. Roy, R. Sahu","doi":"10.4018/ijgee.315798","DOIUrl":"https://doi.org/10.4018/ijgee.315798","url":null,"abstract":"Low height embankments are widely used as road embankments for highways and rural roads in India. Sometimes, the construction of such types of embankments on soft foundation soil becomes mandatory. In addition to the problematic soft foundation soil, seismic excitation might also play a significant role in the stability of such an embankment. The present study analyses the response of a low height embankment with soft foundation soil under earthquake loading. Numerical simulations have been performed using FLAC2D program. A stiffer half-space with higher shear wave velocity (Vs) has been considered below the soft foundation soil and the earthquake loading has been applied at the bottom of this stiffer half-space. Simulation has been performed considering two different thicknesses of soft foundation soil. In addition to that, three different levels of earthquake shaking and Vs of the stiffer half-space have been considered in the analysis. Results have been presented in the form of PGA amplification, excess pore water pressure, horizontal, vertical static/seismic displacement, etc.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79852143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Estimation of Vs30 Bounds from Limited Soil Data Considering Uncertainty - A Practical Approach 考虑不确定性的有限土壤数据的Vs30边界估计-一种实用方法
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.303588
{"title":"Estimation of Vs30 Bounds from Limited Soil Data Considering Uncertainty - A Practical Approach","authors":"","doi":"10.4018/ijgee.303588","DOIUrl":"https://doi.org/10.4018/ijgee.303588","url":null,"abstract":"According to design standards, uncertainty of dynamic foundation parameters are accounted in soil structure interaction (SSI) analysis by considering best estimate, upper and lower bounds. Site specific variability (coefficient of variation: Cv) cannot be directly established from limited site measurements. Codes prescribe a value of unity for such cases, which results in wide and often unrealistic range of foundation parameters for SSI. A Monte Carlo (MC) simulation based approach is proposed for calculation of site specific Cv from limited measurements. Along with 12% reduction of mean value, Cv could be reduced to 0.5, thereby enabling reduction of the aforementioned range. Adoption of code specified minimum Cv could accommodate 50% inaccuracy of input shear wave velocity, which justifies use of correlation equations (with inaccuracies reported between 20% and 35%) for generation of synthetic shear wave velocity profiles as substitute for or augmentation of site measurements.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80482384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Machine Induced Vertical Responses of Single and Pile Group - Experimental and Theoretical Study 单桩和群桩的机械竖向响应试验与理论研究
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.298989
{"title":"Machine Induced Vertical Responses of Single and Pile Group - Experimental and Theoretical Study","authors":"","doi":"10.4018/ijgee.298989","DOIUrl":"https://doi.org/10.4018/ijgee.298989","url":null,"abstract":"The main objective of this study is to understand the dynamic characteristic of pile foundations subjected to machine based vertical vibrations. To accomplish this objective, forced vibration field tests are performed on hollow steel single and pile group to obtain the vertical responses of the pile foundations. It is found from dynamic frequency-amplitude response curves that the resonant frequencies are decreases and resonant amplitudes are not proportional when excitation forces are increases which indicate the nonlinear characteristics of soil-pile systems. The values of resonant frequencies are found higher and resonant amplitudes are found lower when the number of pile is increase due to increase in soil-pile stiffness. For theoretical study, the continuum approach method is used to determine the analytical response curves of piles and further it is compared with the field test results. To understand the behavior of pile group, the variations of group efficiency ratio with varying frequencies are also predicted form the analysis.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87032835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of Stone Columns on Seismic Response of Buildings Considering the Effects of Liquefaction 考虑液化作用的石柱对建筑物地震反应的影响
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.314222
Murugesan Sankara Narayanan, Joseph Antony Visuvasam, S. Chandrasekaran
{"title":"Influence of Stone Columns on Seismic Response of Buildings Considering the Effects of Liquefaction","authors":"Murugesan Sankara Narayanan, Joseph Antony Visuvasam, S. Chandrasekaran","doi":"10.4018/ijgee.314222","DOIUrl":"https://doi.org/10.4018/ijgee.314222","url":null,"abstract":"In this paper, the behaviour of a soil-foundation system supported on a stone column-reinforced liquefiable soil strata is investigated through finite element analysis. The numerical analyses are performed on a five story reinforced concrete moment resisting building supported on a raft foundation. The influence of stone column slenderness ratio on liquefaction mitigation is studied by varying the length of stone columns at a constant area replacement ratio. The results are obtained based on the excess pore pressure, free-field soil settlement, foundation settlement, acceleration response, superstructure's inter-story drift, and lateral story displacement for each ground motion. The results showed that the liquefaction of free-field soil had a major impact on the foundation settlement and building lateral deformation. With the inclusion of stone columns, excess pore pressure ratio in the free-field region reduced considerably, which had immediate effects on the building's lateral deformation.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83910674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Simplified Approach of Design Pile Foundation on Liquefiable Soil in India 印度可液化土桩基础设计的简化方法
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.292466
S. Dutta, R. P. Nanda
{"title":"A Simplified Approach of Design Pile Foundation on Liquefiable Soil in India","authors":"S. Dutta, R. P. Nanda","doi":"10.4018/ijgee.292466","DOIUrl":"https://doi.org/10.4018/ijgee.292466","url":null,"abstract":"In India piles are designed as per IS 2911:2010 (Part 1) for different soil conditions considering all the load criteria. But there is no such provision in Indian Standard Codes for designing piles in potentially liquefiable soils. In this paper, the design of pile foundation in liquefiable soil is discussed. The provisions for design of pile foundations in liquefiable soil from different codes of practice from different countries are studied and the design approaches for the same are discussed based on those studies (Puri et al. 2008). The load bearing capacity of a pile in liquefied soil and non-liquefied soil is made based on the force equilibrium approach. A standardize graph which may be useful for practicing engineers has been plotted. Further, a comparative study is made based on the force equilibrium approach in Indian conditions.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87821758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reliability-Based Fragility Analysis of RC Frame Buildings Considering Soil-Structure Interaction 考虑土-结构相互作用的RC框架结构易损性可靠度分析
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.304911
A. Shiuly, D. Das
{"title":"Reliability-Based Fragility Analysis of RC Frame Buildings Considering Soil-Structure Interaction","authors":"A. Shiuly, D. Das","doi":"10.4018/ijgee.304911","DOIUrl":"https://doi.org/10.4018/ijgee.304911","url":null,"abstract":"In the present study, the effect of Soil Structure Interaction (SSI) of low, mid and high rise (G+1, G+4, and G+9 storey) buildings has been evaluated by nonlinear dynamic analysis using three-dimensional finite element method. Three types of uniform soils namely hard soil, medium soil and soft soil have been considered for the present analysis. These buildings have been subjected to Loma Prieta (1989) earthquake motion and Denali (2002) earthquake motion as near field and far field earthquake motions respectively under the above mentioned soil conditions. From the analysis, the horizontal displacements and percentage of drifts have been determined of all the storeys of the buildings under the above mentioned three soil conditions and the two earthquakes. Further, for all the cases fragility curves have been computed. Furthermore, on the basis of the fragility curve and seismic hazard curve of a region, Reliability Index (RI) have also been developed.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84564816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Seismic Hazard Analysis Using Fuzzy-Probabilistic Approach for Chennai City, South India 印度南部钦奈市地震危险性的模糊概率分析
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.302005
{"title":"Seismic Hazard Analysis Using Fuzzy-Probabilistic Approach for Chennai City, South India","authors":"","doi":"10.4018/ijgee.302005","DOIUrl":"https://doi.org/10.4018/ijgee.302005","url":null,"abstract":"Fuzzy-Probabilistic Seismic Hazard Analysis (FPSHA) is performed for Chennai city, south India incorporating both the random and fuzzy uncertainties. Randomness is handled using Monte-Carlo simulation technique, and fuzziness is accounted in the hazard analysis using fuzzy logic. The magnitude of earthquakes and epicentral distances are fuzzified and used as inputs in the fuzzy inference rules. Fuzzy attenuation relationships are developed as consequence of the inference rules with the help of ground-motion models and ANFIS. The proposed FPSHA method has the advantage over the conventional hazard analysis methods in respect of its preciseness, efficiency, practicability and reliability. The ground motions compatible with the target spectrum (UHS) of 475 years return period are selected from the recorded accelerograms with appropriate scaling. The established spectrum compatible accelerograms are vital in the seismic analysis and design of infrastructure facilities, rehabilitation and strengthening of historical and critical structures.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89585515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Linear and Equivalent-Linear Direct Transfer of Bedrock Response Spectrum to Free Surface 基岩反应谱向自由表面的线性和等效线性直接传递
IF 0.8
International Journal of Geotechnical Earthquake Engineering Pub Date : 2022-01-01 DOI: 10.4018/ijgee.310051
Mounia Menoun Hadj Brahim, H. Afra
{"title":"Linear and Equivalent-Linear Direct Transfer of Bedrock Response Spectrum to Free Surface","authors":"Mounia Menoun Hadj Brahim, H. Afra","doi":"10.4018/ijgee.310051","DOIUrl":"https://doi.org/10.4018/ijgee.310051","url":null,"abstract":"The aim of this study is to develop a method based on a theoretical background that can evaluate directly the response spectrum of a soil profile at the surface from a specified bedrock response spectrum. One-dimensional ground response analysis is mainly performed using linear (L) and equivalent linear (EQL) method. The interesting feature of this method is its possibility to evaluate, directly, the response spectrum of a soil profile at the surface, without the need of using the power spectral density or the Fourier amplitude spectrum. The results of the proposed method showed a good agreement compared with those obtained from the Shake software and from the random vibration theory (RVT) used in the Strata software.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81031651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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