Stability Assessment And Suggestion For Control Measures Of A Potential Landslide Slope On Nh 94, Uttarakhand Himalaya, India,
2010
Central Building Research Institute (CSIR), India
Stability Assessment And Suggestion For Control Measures Of A Potential Landslide Slope On Nh 94, Uttarakhand Himalaya, India, A. Ghosh, S. Sarkar, D. P. Kanungo, P. K. S. Chauhan, Zamir Ahmad
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
An unstable slope having few houses which were under distress was studied to arrive at suitable control measures. The slope has undergone subsidence at the road level and there are few houses down the road level which have developed major cracks. The study was focused on identification of causes, assessment of slope stability and suggestions for control measures. The study involved geological and geotechnical investigations, slope stability analysis and monitoring of movements. The paper highlights the field observations and results of the study.
Preface,
2010
Missouri University of Science and Technology
Preface, Shamsher Prakash
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Conference Schedule,
2010
Missouri University of Science and Technology
Conference Schedule, Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session 1,
2010
University of New Hampshire, Durham, New Hampshire
General Report — Session 1, Pedro De Alba, Kenneth Gavin, Monica Prezzi, Theodoros Triantafyllidis
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session 2,
2010
URS Corporation, Los Angeles, CA
General Report — Session 2, Ethan Dawson, C. B. Crouse
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session 5,
2010
University of Patras, Greece
General Report — Session 5, George E. Mylonakis, Achilleas Papadimitriou, Nikos Gerolymos
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session 6,
2010
Klohn Crippen Berger Ltd., Canada
General Report — Session 6, Alex Sy, Hing-Ho Tsang, Thava Thavaraj, Ellen M. Rathje, Yingwei Wu
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session 7,
2010
Kleinfelder, San Diego, CA
General Report — Session 7, Jorge F. Meneses, Ioannis Anastasopoulos
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
General Report — Session 9,
2010
Indian Institute of Science, India
General Report — Session 9, T. G. Sitharam, K. S. Vipin
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Keynote Lecture: Some Recent Developments In The Selection Of Ground Motions For Design,
2010
University of British Columbia, Canada
Keynote Lecture: Some Recent Developments In The Selection Of Ground Motions For Design, W. D. Liam Finn, A. Wightman
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper describes some recent developments in the selection of ground motions for design; the conditional mean spectrum approach and risk targeted ground motions. The conditional mean spectrum approach is just finding its way into practice and its application to a major dam is presented. Risk targeted ground motions are the basis for the next generation of building codes in the USA. The process of determining these motions is explained. Finally in the context of the retrofit of 800 schools in British Columbia, Canada, a performance based design procedure based on incremental dynamic analysis (IDA), with direct application to geotechnical …
Table Of Contents,
2010
Missouri University of Science and Technology
Table Of Contents, Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
A Practical Model For Advanced Nonlinear Analysis Of Earthquake Effects In Clay Slopes,
2010
University of British Columbia, Canada
A Practical Model For Advanced Nonlinear Analysis Of Earthquake Effects In Clay Slopes, Mahdi Taiebat, Amir M. Kaynia
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Presented in this paper is an effort in providing an advanced yet practical tool with a reasonable level of complexity for modeling of clays in realistic geotechnical engineering problems. SANICLAY model is a Simple ANIsotropic CLAY plasticity model that has been developed by Dafalias et al. (2006). The SANICLAY model provides successful simulation of both undrained and drained rateindependent behavior of normally consolidated clays, and to a satisfactory degree of accuracy of overconsolidated clays. An associated flow rule extension of the SANICLAY model has been employed in the present study, trading simplicity for some accuracy in simulations. The model requires …
An Evaluation Of Ground Vibrations Induced By Heavy Free-Falling Structural Elements,
2010
Hanyang University of Civil and Environmental Engineering, Seoul, Korea
An Evaluation Of Ground Vibrations Induced By Heavy Free-Falling Structural Elements, Kwangkyun Kim, Mark J. Carlson, Duhee Park
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Ground vibrations generated during a large structural demolition event can be potentially damaging to nearby structures or sensitive equipment. In this paper, an approach for the prediction of the ground vibration induced by a large free-falling heavy weight is proposed based on both measured and collected data. A series of field ground vibration measurements were performed relative to the dynamic motions induced by free-falling heavy structural elements during demolition of a generating plant in the upper Midwest, USA. Using this information and the collected data, correlations between the measured PPV and normalized distance from the impact source with various ground …
Assessment Of Liquefaction/Cyclic Failure Potential Of Alluvial Deposits On The Eastern Coast Of Cyprus,
2010
Eastern Mediterranean University, Cyprus
Assessment Of Liquefaction/Cyclic Failure Potential Of Alluvial Deposits On The Eastern Coast Of Cyprus, Huriye Bilsel, Goknur Erhan, Turan Durgunoglu
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The main objective of this paper is to evaluate liquefaction potential and cyclic failure of subsoils of Tuzla area located on the eastern coast of Cyprus. The in-situ tests of cone penetration test (CPT) and standard penetration test (SPT) were used for site specific evaluation of liquefaction potential. Index properties and undrained shear strength (su) were used to assess cyclic failure potential of fine-grained soils. Liquefaction potential index (LPI) was evaluated based on the calculated factor of safeties for each CPT location. Sensitivity of soils was indirectly estimated from liquidity index (LI). The samples tested displayed high sensitivity …
Cyclic Compression Of Compacted Clayey Sand At Small Cyclic Strains,
2010
University of California, Los Angeles, CA
Cyclic Compression Of Compacted Clayey Sand At Small Cyclic Strains, Mladen Vucetic, Macan Doroudian, David W. Sykora
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Ten drained cyclic strain-controlled direct simple shear tests were conducted on compacted low-plasticity clayey sand to measure its cyclic compression properties. The soil had 37 % fines, liquid limit of 28% and plasticity index 14. The relative compaction of specimens prior to consolidation and cyclic shearing was between 80 and 90 %. Cyclic compression is expressed as the accumulation of vertical strain with the number of cycles, N. Vertical strain recorded at the end of every cycle, ενc, increased with the cyclic shear strain amplitude, γc, and N. Such behavior is typical and has been obtained …
Cyclic Response Of Reconstituted Low Plasticity Silt,
2010
Middle East Technical University, Turkey
Cyclic Response Of Reconstituted Low Plasticity Silt, Selman Sağlam, B. Sadık Bakır
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Foundation failures observed over saturated silt-clay mixtures during past earthquakes clearly indicate the need for a profound understanding of the behavior of such soils under seismic loading. Although the mechanisms dominating the response of fine grained soils under seismic loading are known to be different from those of sandy soils, the behavior of low plasticity silt and clay is still under discussion. An experimental research program, still in progress, has been undertaken to investigate the cyclic behavior of low plasticity fine grained soils for developing useful guidelines for the assessment of seismic response. Samples of low plasticity silt, initially consolidated …
Constitutive Models Predicting The Response Of Clays Along Slip Surfaces,
2010
Stamatopoulos and Associates Co. Ltd., Greece
Constitutive Models Predicting The Response Of Clays Along Slip Surfaces, Constantine A. Stamatopoulos
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The paper proposes and validates a constitutive model simulating the change of resistance along clay slip surfaces under both undrained and drained conditions. The proposed model is based on (a) the critical state theory and (b) the assumption that the critical state changes once failure is reached, in terms of the further shear displacement. Under undrained conditions, the proposed model simulates the excess pore pressure generation and subsequently the continuous change of clay resistance along the slip surface from its initial value to the peak strength and then at large displacement the residual value measured in constant-volume ring shear tests. …
Dynamic Properties Of Sand In Constant-Volume And Constant-Load Tests,
2010
Sharif University of Technology, Iran
Dynamic Properties Of Sand In Constant-Volume And Constant-Load Tests, F. Jafarzadeh, H. Sadeghi
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Constant-volume and constant-load tests were performed on Babolsar and Toyoura sands by using a modified SGI cyclic simple shear device which provides the capability of back pressure saturation. All tests were shear strain controlled and conducted under different values of relative density, vertical effective stress and shear strain amplitude. Results revealed that Dr, σ′v and γ affect shear modulus and damping ratio under both constant-volume and constant-load conditions in similar ways except the shear strain amplitude which has no important influence on damping of constant-volume tests. The effects of Dr, σ′v, γ and …
Dynamic Site Characterization By The Seismic Dilatometer Marchetti Test In Central Italy,
2010
CNR Ibam, Catania, Italy
Dynamic Site Characterization By The Seismic Dilatometer Marchetti Test In Central Italy, Antonio Cavallaro, Salvatore Grasso, Michele Maugeri
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
This paper describes and compares the results of in situ and laboratory investigations performed on two Italian sites: St. Giuliano di Puglia (CB) located in the Molise region and Tito Scalo (PZ) located in the Basilicata Region. The tests were carried out to determine the variation of shear wave velocity with depth and strain level by Seismic Dilatometer Marchetti Test (SDMT), Cone Penetration Test (CPT), Noise Analysis Surface Waves (NASW), Down-Hole (DH) Test and Resonant Column Tests (RCT). Some considerations on shear modulus degradation evaluation by SDMT are proposed. The available data also enabled one to compare the shear modulus …
Evaluation Of Liquefaction Potential Of Soil By Down Borehole Method,
2010
Bengal Engineering and Science University, India
Evaluation Of Liquefaction Potential Of Soil By Down Borehole Method, Sumit Ghose, Ambarish Ghosh
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
The procedure used in this research work for evaluation of liquefaction potential due to earthquake is by correlating the cyclic stress ratio(CSR) and the cyclic resistance ratio(CRR) obtained from standard penetration test and shear wave velocity. Shear wave velocity in the different layers of soils have been determined by the use of down borehole instrument. P- and S-wave velocity data of nearsurface soils (upper 21 m) are analyzed and correlated to depth and sedimentological properties. The results show that the S-wave velocity is much more sensitive to changes in lithology and mechanical properties than the P-wave velocity, which is characterized …
