International Journal of Geotechnical Earthquake Engineering最新文献_第10页

SPT-Based Probabilistic Method for Evaluation of Liquefaction Potential of Soil Using Multi-Gene Genetic Programming 基于spt的多基因遗传规划估计土壤液化潜力的概率方法

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2013-01-01 DOI: 10.4018/JGEE.2013010103

P. K. Muduli, Sarath Das

引用次数: 10

Sliding Stability of Retaining Wall Supporting c-Î¦ Backfill under Pseudo-Statically Seismic Active Load 拟静力地震主动荷载作用下挡土墙支撑c-Î充填体的滑动稳定性

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2013-01-01 DOI: 10.4018/JGEE.2013010101

Sima Ghosh

引用次数: 0

Liquefaction Hazard Mapping of Lucknow: A Part of Indo-Gangetic Basin (IGB) 印度恒河流域勒克瑙地区液化灾害制图

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2013-01-01 DOI: 10.4018/JGEE.2013010102

Abhishek Kumar, P. Anbazhagan, T. Sitharam

{"title":"Liquefaction Hazard Mapping of Lucknow: A Part of Indo-Gangetic Basin (IGB)","authors":"Abhishek Kumar, P. Anbazhagan, T. Sitharam","doi":"10.4018/JGEE.2013010102","DOIUrl":"https://doi.org/10.4018/JGEE.2013010102","url":null,"abstract":"Even though the size of the earthquake is moderate, presence of soft soil near the surface can cause devastating damage due to local site and induced effects like liquefaction. Evidence of liquefaction due to past Indian earthquakes was highlighted in many Paleo-seismic studies, particularly in the Himalayan region. The objective of this paper is subsurface characterization of part Indo-Gangetic Basin (IGB) and estimation of liquefaction hazards for the possible surface ground motions based on the region seismic study. Drilling of boreholes and measurement of standard penetration N values are carried out at selected locations for subsurface characterization. Possibility of liquefaction for soil deposits are assessed by comparing the grain size distribution curves obtained from laboratory tests with the range of grain size distribution curves of potentially liquefiable soils. The minimum factor of safety values has been identified for each location and presented in the form of maps showing FOS against liquefaction for average and maximum amplified peak ground acceleration (PGA) values. These maps have highlighted that the northern, western and central parts of Lucknow fall under very critical to critical for liquefaction while southern parts shows moderate to low critical area.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74339173","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: 16

Dynamic Analysis of Homogenize Earthen Dam Using Blanket Layer Technique 采用毯层技术的均质土坝动力分析

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2013-01-01 DOI: 10.4018/JGEE.2013010105

B. Gordan, A. Adnan

{"title":"Dynamic Analysis of Homogenize Earthen Dam Using Blanket Layer Technique","authors":"B. Gordan, A. Adnan","doi":"10.4018/JGEE.2013010105","DOIUrl":"https://doi.org/10.4018/JGEE.2013010105","url":null,"abstract":"Construction of earthen dams has developed quickly to access water and electricity. The earthquake phenomena can generate cracks at the crest, and transferred them to the structural body. It has occurred during the interaction between structure and reservoir. In this context, some reinforcement techniques have experienced according to the literature. They have included a perpendicular drain, prefabricated vertical drain, Geosynthetic in some layers within the structure, Pile, injection and cut off wall system on the dam foundation. Most of them controlled this aspect costly. The Finite-element method has applied via plane strain aspect using the ANSYS13. This paper evaluated effects of using blanket layer between a short homogenized earthen dam and weak foundation on the dynamic behavior throughout the seismic process. As a result, clay soil in the blanket layer with a modulus elasticity ratio equal to 2.50 between it, and loose sand of foundation has indicated the optimal approach. It has revealed that, this method can be changed the situation of the minimum and maximum value of shear stress when it has located in the middle of the foundation without the blanket layer at the end of vibration.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85449161","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: 2

Numerical Modeling of Buried Pipe under Wheel Loads Using FLAC 3D 车轮荷载作用下埋地管道的FLAC 3D数值模拟

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2013-01-01 DOI: 10.4018/JGEE.2013010104

H. Niroumand, K. Kassim, B. Adhami

引用次数: 0

Formulation of Seismic Passive Resistance of Retaining Wall Backfilled with c-F Soil c-F土填土挡土墙地震被动抗力计算公式

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2012-07-01 DOI: 10.4018/JGEE.2012070102

Sima Ghosh

引用次数: 2

Assessment of Liquefaction Potential Index Using Deterministic and Probabilistic Approaches 用确定性和概率方法评价液化潜力指数

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2012-07-01 DOI: 10.4018/JGEE.2012070105

N. James, T. Sitharam, K. Vipin

引用次数: 1

Support Vector Classifiers for Prediction of Pile Foundation Performance in Liquefied Ground During Earthquakes 地震液化地基桩基性能预测的支持向量分类器

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2012-07-01 DOI: 10.4018/JGEE.2012070104

P. Samui, S. Bhattacharya, T. Sitharam

{"title":"Support Vector Classifiers for Prediction of Pile Foundation Performance in Liquefied Ground During Earthquakes","authors":"P. Samui, S. Bhattacharya, T. Sitharam","doi":"10.4018/JGEE.2012070104","DOIUrl":"https://doi.org/10.4018/JGEE.2012070104","url":null,"abstract":"Collapse of pile-supported structures is still observed in liquefiable soils after most major earthquakes and remains a continuing concern to the geotechnical engineering community. Current methods for pile design in liquefiable soils concentrate on a bending mechanism arising from lateral loads due to inertia and/or soil movement (kinematic loads). Recent investigations demonstrated that a pile or pile group can become laterally unstable (buckling instability/ bifurcation) under the axial load (due to the dead load) alone if the soil surrounding the pile liquefies in an earthquake. This is due to the liquefaction-induced elimination of the soil bracings and the governing mechanism is similar to Eulerâ€™s buckling of unsupported struts. Analysed are 26 cases of pile foundation performance in liquefiable soils giving emphasis to the buckling instability using Support Vector Machine (SVM) method. SVM has recently emerged as an elegant pattern recognition tool. This tool has been used to classify pile performance against buckling failure. Each of the case studies reported is represented by four parameters: Effective buckling length of pile (Leff), the allowable load on the pile (P), Eulerâ€™s elastic critical load of the pile (Pcr) and minimum radius of gyration of the pile (rmin). The performance of the developed SVM is 100%.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77778269","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: 3

Excess pore pressures around underground structures following earthquake induced liquefaction 地震液化后地下结构周围的超孔隙压力

IF 0.8

International Journal of Geotechnical Earthquake Engineering Pub Date : 2012-07-01 DOI: 10.4018/JGEE.2012070103

S. C. Chian, S. Madabhushi

{"title":"Excess pore pressures around underground structures following earthquake induced liquefaction","authors":"S. C. Chian, S. Madabhushi","doi":"10.4018/JGEE.2012070103","DOIUrl":"https://doi.org/10.4018/JGEE.2012070103","url":null,"abstract":"Underground structures located in liquefiable soil deposits are susceptible to floatation following an earthquake event due to their lower unit weight relative to the surrounding saturated soil. This inherent buoyancy may cause lightweight structures to float when the soil liquefies. Centrifuge tests have been carried out to study the excess pore pressure generation and dissipation in liquefiable soils. In these tests, near full liquefaction conditions were attained within a few cycles of the earthquake loading. In the case of high hydraulic conductivity sands, significant dissipation could take place even during the earthquake loading which inhibits full liquefaction from occurring. In the case of excess pore pressure generation and dissipation around a floating structure, the cyclic response of the structure may lead to the reduction in excess pore pressure near the face of the structure as compared to the far field. This reduction in excess pore pressure is due to shear-induced dilation and suction pressures arising from extensile stresses at the soil-structure interface. Given the lower excess pore pressure around the structure; the soil around the structure retains a portion of this shear strength which in turn can discourage significant uplift of the underground structure.","PeriodicalId":42473,"journal":{"name":"International Journal of Geotechnical Earthquake Engineering","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86791378","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: 10

Liquefaction and Dynamic Properties of Assemblies with Particles of Spherical and Ellipsoidal Shapes: A Discrete Element Approach 球形和椭球粒子组合的液化和动力特性:离散元方法

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International Journal of Geotechnical Earthquake Engineering Pub Date : 2012-01-01 DOI: 10.4018/JGEE.2012010102

S. Kumari, T. Sitharam

引用次数: 2