Investigation On Geosynthetic Reinforced Two Layered Soil System,
2013
S. G. G. S. Institute of Engineering and Technology, India
Investigation On Geosynthetic Reinforced Two Layered Soil System, P. B. Ullagaddi, T. K. Nagaraj
International Conference on Case Histories in Geotechnical Engineering
Use of geosynthetics for flexible pavements founded on expansive soil subgrade is one of feasible and economic solution to minimize the undulation and required pavement thickness. In this present investigation the effect of inclusion of the geosynthetic reinforcement on California Bearing Ratio (CBR) value of a two layered soil system with black cotton soil at bottom and granular soil at top as a buffer layer, with different thickness configuration and geotextiles of different physical and mechanical properties was studied by laboratory and field California bearing ratio tests. Thickness of flexible pavement over the two layer soil system of different thickness …
Offshore Stone Columns Under Embankment With Embedded Pipes,
2013
Bechtel Power Corporation, Frederick, MD
Offshore Stone Columns Under Embankment With Embedded Pipes, Mohab Sabry, Mohamed A. Mostafa
International Conference on Case Histories in Geotechnical Engineering
A breakwater embankment was constructed as part of a settling basin for the intake of a thermal power plant in the north of Egypt. The 440-m long breakwater surrounds the intake basin which has an area of about 18000 m2. Sea water is supplied to the intake basin through 50 concrete pipes embedded in the breakwater. Subsurface soil conditions in the area indicated that the embankment would be founded on soft silty clay underlain by a layer of silty sand. Results from the settlement analysis showed that the embedded pipes could not tolerate the predicted differential settlement in …
Selection Activity Optimization For A Geotextile-Ash System From Filtration Function Point Of View,
2013
Technical University of Civil Engineering, Romania
Selection Activity Optimization For A Geotextile-Ash System From Filtration Function Point Of View, Raluca Ioana Chirică, Liviu Tit Taloş
International Conference on Case Histories in Geotechnical Engineering
The paper presents a complex study concerning the fly ash deposits. It is known that the fly ash is an industrial by-product which is stored in landfills, with important implications on the environment. On this line, the general stability problem under different hydraulic and mechanical conditions was studied. Experimental and numerical analysis results are presented. The paper is about a fly ash embankment protected against erosion with different geotextile types. In order to obtain the main parameters of this compatibility problem, before performing a numerical analysis, some laboratory tests were undertaken. Conclusions were drawn regarding the optimum geotextile-fly ash filtration …
Simulation Of Inorganic And Organic Contaminants Transport In Sanitary Landfills,
2013
Motilal Nehru National Institute of Technology, India
Simulation Of Inorganic And Organic Contaminants Transport In Sanitary Landfills, R. P. Singh
International Conference on Case Histories in Geotechnical Engineering
The modelling of leachate generation and transport is important for estimating the possible groundwater pollution below the sanitary landfills. The numerical solution of the mathematical models for the total solids (inorganic) and chemical oxygen demand (organic) transport is presented. The existing one dimensional leachate transport model which accounts for advection and diffusion is modified with the addition of desorption term and the simulation results are compared for different case studies from the literature. The maximum error is reduced to 28.24 % with modified inorganic model against 38.93 % with the existing model for the TS concentration when simulated with literature …
Stabilization And Reinforcement Of Slope With Geogrid: A Case Study,
2013
Asil sazan abnieh Co., Iran
Stabilization And Reinforcement Of Slope With Geogrid: A Case Study, Khashayar Hemmati, Seyed Vahid Masoomi, Javad Nazari Afshar
International Conference on Case Histories in Geotechnical Engineering
This paper presents a case study example of appropriate method selection of stabilization and reinforcement of slope by introducing engineering and economical aspects. Introduced slope is located in science and research campus of Islamic Azad University (IAU) in north of Tehran with height of 4-29 m and length of 370 m. A big building with 9 floors and total area of 70000 square meters is located upper and near edge of slope, so that existence of this building has increased sensitivity of projects design and construction method. Slope is located in vulnerable area with a high risk of seismicity based …
Stabilization Of Contaminated Soil By Dicalcium Phosphate,
2013
Payame Noor University, Iran
Stabilization Of Contaminated Soil By Dicalcium Phosphate, Amin Falamaki, Hossein Tavallali, Sharbanoo Rezanejad Farahmand
International Conference on Case Histories in Geotechnical Engineering
Stabilization of heavy metals contaminated soils using phosphate amendments is relatively a simple, quick and cheap method to reduce the transport of contaminants in the environment. The objective of this study is to stabilize the polluted soil using dicalcum phosphate (DCP). In this study a series of leachate column tests were conducted to find out the effect of DCP on Pb and Cu polluted soil. In addition, to understand the concentration of DCP on the efficiency of the method, different samples with different polluted soils were tested. DCP with 0.1, 0.2 and 0.5 mg/kg dry soil were added to the …
Static And Cyclic Triaxial Testing Of A Compacted Limestone Rockfill,
2013
Purdue University, West Lafayette, IN
Static And Cyclic Triaxial Testing Of A Compacted Limestone Rockfill, Hamid Fallah
International Conference on Case Histories in Geotechnical Engineering
The results of large scale static and cyclic triaxial tests for the Siah Bishe rockfill are presented. The test specimens are made of a modeled gradation with Dmax of 5 cm, reduced from the real Dmax of 80 cm by scalping method. Static triaxial tests resulted in the rockfill shear strength parameters within the expected range. The cyclic triaxial strength tests showed that the dam body rockfill failure criterion is not affected by earthquake loading. On the other hand, the cyclic triaxial parametric tests results were used to define shear modulus and damping curves of the compacted rockfill, …
The Investigation Of Salinity Effects On Behavioral Parameters Of Fine-Grained Soils,
2013
The University of Isfahan, Iran
The Investigation Of Salinity Effects On Behavioral Parameters Of Fine-Grained Soils, Hadiseh Mansouri, Rassoul Ajalloeian, Amir Hossein Sadeghpour
International Conference on Case Histories in Geotechnical Engineering
The present paper aims at investigating the effect of water salinity on engineering properties of fine-grain soil. Saline water used in this study was obtained from half saline water of Ajichay River (with TDS more than 1877 ppm) and saline branch of Korchay (with TDS more than 97000 ppm) located in Northwestern of Iran. Fine-grain soil studied is from Korchay dam core. Due to the high hardness of water in this river, the feasibility of using saline water as the water required in clay core of the dam process has been studied in this research. The experiments were performed including …
Wsasw Application For Soil Dynamic Properties In Soft Soil Investigation At Kelang, Malaysia,
2013
Universitas Muhammadiyah Yogyakarta, Indonesia
Wsasw Application For Soil Dynamic Properties In Soft Soil Investigation At Kelang, Malaysia, Sri Atmaja P. Rosyidi
International Conference on Case Histories in Geotechnical Engineering
In seismic wave measurements, soil dynamic parameters, i.e., shear wave velocity and shear modulus are determined from a dispersion curve of phase velocity with employing the theory of elasticity of soils. In this paper, a developed technique from Spectral Analysis of Surface Waves (SASW), namely as the Wavelet Spectrogram Analysis of Surface Waves (WSASW) is introduced for measurement of the soil dynamic properties at soft marine clay soils sites. This technique has capability to localize the interested response spectrum of surface waves, to reconstructed spectrograms of noisy seismic waves and produces the enhanced phase data to develop the phase velocity …
Two-Tier Retaining Wall System To Support Railroad Embankment Widening,
2013
Gannett Fleming, Inc., Audubon, PA
Two-Tier Retaining Wall System To Support Railroad Embankment Widening, Abhijit R. Sheth, Craig M. Benedict, Ara G. Mouradian, John Brun
International Conference on Case Histories in Geotechnical Engineering
The National Railroad Passenger Corporation (Amtrak) is replacing the 1907-era two-track bascule bridge over the Niantic River between East Lyme and Waterford, Connecticut, along the heavily traveled Northeast Corridor. Prestressed concrete sheet pile retaining walls were selected to support the new higher approach embankments along both the east and west approaches to the new bridge. Along the west approach a two-tiered wall design was utilized to support a new recreational walkway elevated above the 100-year storm surge elevation for the Niantic Bay, while at the same time keeping the walkway below the level of the adjoining tracks. The design of …
Relook At Foundation Design Of Re Structures In Indian Environment Based On Case Study,
2013
S. V. National Institute of Technology, India
Relook At Foundation Design Of Re Structures In Indian Environment Based On Case Study, Ravin M. Tailor, Jigisha M. Vashi, Mahesh D. Desai
International Conference on Case Histories in Geotechnical Engineering
India has massive infrastructure development plan in next decade. The safety, cost optimization saving construction time is challenges to engineers. The mass communication progress of 11th & 12th five year plans involves design and execution of large number of underpasses/flyovers through out country. The problems faced by adoption of foundation practice in India based on interpretation of BS 8006 / 1995 during execution are analyzed. Though not widely publicized, failures of walls or part of facial block wall are reported. To avoid contract schedules quick remedial measures are adopted, which based on consultants and facilities includes stone columns, lime piles, …
Rebuild Of Us 27,
2013
AMEC, Nashville, TN
Rebuild Of Us 27, Don W. Dotson, Christopher J. Ramsey
International Conference on Case Histories in Geotechnical Engineering
An existing four lane section of US 27 was widened to eight lanes. The project lies in the rugged Valley and Ridge Province of the Appalachian mountains starting at the Tennessee River in Chattanooga, Tennessee and extending 2.6 km north to Signal Mountain Boulevard. This terrain presented many challenges to accommodate the road widening in the narrow, rugged topography. Multiple tiered wall systems consisting of large tieback walls, post-tensioned reaction blocks, and gravity MSE walls for a total of approximately 30 retaining walls were required. The retaining walls served to stabilize the thrust faulted geology while also minimizing right-of-way acquisitions. …
General Report – Session 2,
2013
University College Dublin, Ireland
General Report – Session 2, Kenneth Gavin, Min-Keong Chung, Jose Clemente
International Conference on Case Histories in Geotechnical Engineering
The complete title of Session two on case histories of unexpected behavior of foundations made reference to unusual soils, diverse environments, a wide range of foundation test methods and structures ranging from historic monuments to tall buildings and towers. In attempting to provide a narrative to the myriad papers submitted which match the session themes we must consider whether unanticipated foundation behavior can ever be described as unexpected. In every project Geotechnical Engineers are charged with predicting the response of structures composed of or built on naturally heterogeneous material. The process (which is not linear) consists of many stages including …
General Report - Session 3,
2013
University of Pisa
General Report - Session 3, Diego Lo Presti, Mary Perlea, Nunziante Squeglia
International Conference on Case Histories in Geotechnical Engineering
This General Report summarizes the 84 papers accepted for the Session 3 focused on: - 3a. Case Histories on Failure and Remediation of Slopes, Dams, Embankments and Landfills (53 papers), - 3b. Case Histories on Failure and Remediation of Retaining Structures, Slurry Walls, and Deep Excavations, Dewatering, Stability (27 papers), - 3c. Improving the Stability and Maintenance of Monuments (4 papers). The papers originate from 26 countries (11 European countries, 3 American countries, 11 Asian countries and 1 African country). The papers cover a number of relevant topics divided into three different sub - sessions. As for the two papers …
Chicago Area Committee,
2013
Missouri University of Science and Technology
Chicago Area Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Application Of Observational Method In The Successful Construction Of Underground Structures, Sardar Sarovar (Narmada) Project, Gujarat, India,
2013
Geological Survey of India, India
Application Of Observational Method In The Successful Construction Of Underground Structures, Sardar Sarovar (Narmada) Project, Gujarat, India, Indra Prakash
International Conference on Case Histories in Geotechnical Engineering
The Sardar Sarovar (Narmada) underground powerhouse is located in Deccan Basalt flows in the lower Narmada valley in Gujarat state. These flows are intruded by dolerite dykes and sill. Basalt flows and dolerite rocks are considered good tunneling media for locating underground structures. Therefore, initial designing of supports was done considering good rock mass conditions. However, during construction numerous geotechnical problems were encountered necessitating review of support system. Rock falls and collapses were observed in tunnel sections passing through dolerite dykes and sills. Cracks were observed in the walls of the powerhouse cavern. During progressive excavations back analysis was done …
An Experimental Study Of The Drained Capacity Of Bucket Foundations For Offshore Applications,
2013
Aalborg University, Denmark
An Experimental Study Of The Drained Capacity Of Bucket Foundations For Offshore Applications, Lars Bo Ibsen, Amin Barari, Kim André Larsen
International Conference on Case Histories in Geotechnical Engineering
Today, wind energy offers the most competitive production prices for renewable energy. Therefore there are strong political and industrial forces, especially in northern Europe, which support the development of the offshore wind industry. The present paper presents the results of drained tests on offshore bucket foundations for wind turbines in saturated dense sand. The bearing capacity of bucket foundations subject to combined loadings which are of interest particularly to the offshore geotechnical engineers, were calculated and found to be largely dependent on embedment ratios and load paths. Based on the results of the analyses, new failure criteria are calibrated for …
Comparison Between Dynamic Responses Of Hollow And Solid Piles For Offshore Wind Turbine Foundations,
2013
Aalborg University, Denmark
Comparison Between Dynamic Responses Of Hollow And Solid Piles For Offshore Wind Turbine Foundations, M. Bayat, Lars Vabbersgaard Andersen, Lars Bo Ibsen
International Conference on Case Histories in Geotechnical Engineering
The offshore wind energy industry is turning out ever larger numbers of offshore wind turbines every year. One way to achieve a cost-effective design is to have a better understanding of the dynamic response of offshore structures. That is why it is getting more and more important to understand the dynamic behavior of soil and interaction between soil and piles. To avert damage to offshore foundation, it becomes necessary to identify and quantify the soil-structure interaction and the related damping effects on the system. In this study, a single pile is investigated by means of boundary integral equations. The pile …
Differential Settlements Of Cylindrical Steel Storage Tanks: Case Of The Marine Terminal Of Bejaia,
2013
University of Sciences and Technology Houari Boumediene, Algeria
Differential Settlements Of Cylindrical Steel Storage Tanks: Case Of The Marine Terminal Of Bejaia, Bahar Ramdane, Sadaoui Omar, Amzal Djahid
International Conference on Case Histories in Geotechnical Engineering
The marine terminal of Bejaia is a zone of storage of hydrocarbon liquids. It consists of sixteen cylindrical floating roof steel tanks founded on a reconstituted and compacted granular fill. At the end of 1980s, after about 25 years of satisfactory service, the tanks were subjected to settlements, ovalization and tilting. Because of a distortion of the steel tank walls and jamming of the floating roof, a shear failure was evident and some tanks were considered unsafe for service. A comprehensive geotechnical investigation was conducted to evaluate the subsurface conditions of the site and to provide recommendations for foundation repair …
Use Of Liquid Limit And Dry Density Test Method For Collapsible Soil Identification,
2013
Tavanab Consulting Engineering Co., Iran
Use Of Liquid Limit And Dry Density Test Method For Collapsible Soil Identification, Mehdi Khalili Noutash, Masoud Hajialilue Bonab, Mehrad Khalili Noutash
International Conference on Case Histories in Geotechnical Engineering
One of the most recognized geotechnical hazard which causes dramatic life lost and serious damages to different structures, are the collapsible soils under the foundation of structures. This problem becomes more critical when water is seeped or induced to the soil structure because collapsible soils are metastable and they have an open structure Khoda Afarin main canal is a major conveyance canal which is located and is under construction in Moghan and Khoda Afarin region pass throw East Azerbaijan and Ardabil provinces in IRAN. Presence of collapsible soils in some portion of this canal bed has brought the necessity of …
