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Numerical Modelling Of Wind Turbine Foundations Subjected To Combined Loading, Venkatesh Madhukar Deshpande 2016 The University of Western Ontario

Numerical Modelling Of Wind Turbine Foundations Subjected To Combined Loading, Venkatesh Madhukar Deshpande

Electronic Thesis and Dissertation Repository

With the growing wind industry in Canada, it has become important to optimize wind turbine foundation design. Wind turbine foundations are subjected to combinations of vertical, horizontal and moment loads due to vertical self-weight of the structure and soil surcharge. Additionally, there are significant lateral loads and overturning moments attributed to varying wind forces acting at considerable tower heights above the ground level. In this thesis, the undrained bearing capacity response of circular & octagonal foundations subjected to combined loading is calculated using finite element analyses. Previous works have mostly focused on circular foundations. An octagonal foundation of the style typically ...


Full Depth Reclamation Of Aviation Pavement, Michael W. Buening 2016 Purdue University

Full Depth Reclamation Of Aviation Pavement, Michael W. Buening

Purdue Road School

Full depth reclamation (FDR) has been utilized multiple times in recent years for airport and roadway pavement rehabilitation. The presentation will review FDR and its use as a treatment for aviation pavements.


Wildcat Bridge - I-65 Artesion Well/Geotechnical/Structural, Anne Rearick, Jeremy Hunter, Silas Nichols, Mir Zaheer 2016 Indiana Department of Transportation

Wildcat Bridge - I-65 Artesion Well/Geotechnical/Structural, Anne Rearick, Jeremy Hunter, Silas Nichols, Mir Zaheer

Purdue Road School

In this session we will discuss the emergency design and repair of the I-65 bridge over Wildcat Creek in Tippecanoe County during the summer of 2015 that closed I-65 northbound.


Storm Damage - Murphy's Law, Dale Sedler, Mark Bailey 2016 Indiana Department of Transportation

Storm Damage - Murphy's Law, Dale Sedler, Mark Bailey

Purdue Road School

Examination of a disastrous event that required 4 coinciding occurrences happening that individually would likely have resulted in minor or no damage.


Report Of The 4th Workshop For Technology Transfer For Intelligent Compaction Consortium, David J. White, Pavana Vennapusa 2016 Iowa State University

Report Of The 4th Workshop For Technology Transfer For Intelligent Compaction Consortium, David J. White, Pavana Vennapusa

InTrans Project Reports

This document summarizes the discussion and findings of the 4th workshop held on October 27–28, 2015 in Frankfort, Kentucky as part of the Technology Transfer Intelligent Compaction Consortium (TTICC) Transportation Pooled Fund (TPF-5(233)) study. The TTICC project is led by the Iowa Department of Transportation (DOT) and partnered by the following state DOTs: California, Georgia, Iowa, Kentucky, Missouri, Ohio, Pennsylvania, Virginia, and Wisconsin. The workshop was hosted by the Kentucky Transportation Cabinet and was organized by the Center for Earthworks Engineering Research (CEER) at Iowa State University of Science and Technology. The objective of the workshop was to ...


Barometer Rising: The Cartagena Protocol On Biosafety As A Model For Holistic International Regulation Of Ocean Fertilization Projects And Other Forms Of Geoengineering, Matthew Hubbard 2016 College of William & Mary Law School

Barometer Rising: The Cartagena Protocol On Biosafety As A Model For Holistic International Regulation Of Ocean Fertilization Projects And Other Forms Of Geoengineering, Matthew Hubbard

William & Mary Environmental Law and Policy Review

No abstract provided.


Full-Scale Shake Table Cyclic Simple Shear Testing Of Liquefiable Soil, Jasper Stanford Jacobs 2016 California Polytechnic State University, San Luis Obispo

Full-Scale Shake Table Cyclic Simple Shear Testing Of Liquefiable Soil, Jasper Stanford Jacobs

Master's Theses and Project Reports

This research consists of full-scale shake table tests to investigate liquefaction of sandy soils. Consideration of the potential and consequences of liquefaction is critical to the performance of any structure built in locations of high seismicity underlain by saturated granular materials as it is the leading cause of damage associated with ground failure. In certain cases the financial losses associated with liquefaction can significantly impact the financial future of an entire region.

Most liquefaction triggering studies are performed in the field where liquefaction has been previously observed, or in tabletop laboratory testing. The study detailed herein is a controlled laboratory ...


Underwater Explosion Energy Dissipation Near Waterborne Infrastructure, Paul R. Smith 2016 University of Kentucky

Underwater Explosion Energy Dissipation Near Waterborne Infrastructure, Paul R. Smith

Theses and Dissertations--Civil Engineering

Underwater explosions pose a significant threat to waterborne infrastructure though destructive pressure waves that can travel significant distances through the water. However, the use of bubble screens can attenuate the peak pressure and energy flux created by explosions to safe levels. This study investigates the prediction of pressure wave characteristics based on accumulated data, the damage potential of underwater explosions based on applied loads and effective material strength, and the bubble screen parameters required to prevent damage. The results were compiled to form a procedure for the design and implementation of a bubble screen the protection of waterborne infrastructure.


Slope Stability Enhancement Of An Upstream Tailings Dam: Laboratory Testing And Numerical Modelling, Yazeed A. Alsharedah 2015 The University of Western Ontario

Slope Stability Enhancement Of An Upstream Tailings Dam: Laboratory Testing And Numerical Modelling, Yazeed A. Alsharedah

Electronic Thesis and Dissertation Repository

Mine tailings are the byproduct of mining activities, which need to be disposed of once the ore is extracted. They can be disposed of in either dry or wet forms. The latter is most common with the tailings being disposed of in the form of slurry inside retention structures. The retention structure may be a natural, manmade, or built dam, which is the case in most of nowadays mining locations. In this thesis, improving the stability of an upstream tailings dam using soil additives is investigated. The experimental phase of this study involved laboratory tests conducted to characterize mine tailings ...


Development Of Semi-Circular Bending (Scb) Fracture Test For Bituminous Mixtures, Gabriel Nsengiyumva 2015 University of Nebraska-Lincoln

Development Of Semi-Circular Bending (Scb) Fracture Test For Bituminous Mixtures, Gabriel Nsengiyumva

Civil Engineering Theses, Dissertations, and Student Research

Granted that most distresses in asphalt (flexible) concrete (AC) pavements are directly related to fracture, it becomes clear that identifying and characterizing fracture properties of AC mixtures is a critical step towards a better pavement design. This thesis examines the testing variables of a reliable and practical semicircular bending (SCB) test for evaluating the fracture characteristics of asphalt concrete mixtures at intermediate service temperature conditions. The first part of this thesis investigates the repeatability of the SCB fracture test method by integrating a statistical-experimental approach to identify testing variables of the SCB test that result in repeatable test results. Toward ...


Viscoelastic, Fatigue Damage, And Permanent Deformation Characterization Of High Rap Bituminous Mixtures Using Fine Aggregate Matrix (Fam), Hesamaddin Nabizadeh 2015 University of Nebraska-Lincoln

Viscoelastic, Fatigue Damage, And Permanent Deformation Characterization Of High Rap Bituminous Mixtures Using Fine Aggregate Matrix (Fam), Hesamaddin Nabizadeh

Civil Engineering Theses, Dissertations, and Student Research

Performance characteristics of bituminous mixtures play the most influential role in designing flexible pavement. These asphaltic mixtures can be considered as heterogeneous mixtures which composed of two primary components: fine aggregate matrix (FAM) phase and aggregate phase. The FAM phase acts as a critical phase in evaluating the performance characteristics including viscoelastic, fatigue damage, and permanent deformation characteristics of entire asphalt mixtures. This study evaluates the viscoelastic, fatigue damage and permanent deformation characteristics of bituminous mixtures containing 65% reclaimed asphalt pavement (RAP) by performing oscillatory torsional shear tests of cylindrical bars of FAM using a dynamic mechanical analyzer. Moreover, this ...


Spatial Variability Of Soil Velocity Using Passive Surface Wave Testing, Daniel Raymond Wagstaffe 2015 California Polytechnic State University - San Luis Obispo

Spatial Variability Of Soil Velocity Using Passive Surface Wave Testing, Daniel Raymond Wagstaffe

Master's Theses and Project Reports

Lifelines such as highways, pipelines, telecommunication lines, and powerlines provide communities with vital services, and their functionality is dependent upon the foundation soil that supports them. However, when designing the infrastructure, it can be difficult to know where to test the soil in order to give spatially representative sampling, particularly for long, lifeline structures. Finding this distance requires knowledge of the spatial correlation and/or the spatial variability of the soil parameter (stiffness, cohesion, etc.). But this correlation distance is not typically found in practice because it requires large amounts of data and the costs of retrieving that data can ...


Comparative Analysis Of Buckling-Restrained Braced Frames In Eccentric Configuration (Brbf-Es) And Eccentrically Braced Frames (Ebfs), Peter T. Vayda 2015 University of Arkansas, Fayetteville

Comparative Analysis Of Buckling-Restrained Braced Frames In Eccentric Configuration (Brbf-Es) And Eccentrically Braced Frames (Ebfs), Peter T. Vayda

Civil Engineering Undergraduate Honors Theses

Continuing on the findings of “Using Buckling-Restrained Braced Frames in Eccentric Configuration,” by Dr. Gary S. Prinz, P.E., which determined that, from a performance standpoint, BRBF-Es could be a viable alternative for EBFs. A comparative analysis was conducted on the design procedures and initial cost estimates of BRBF-Es and EBFs. Upon designing four 12-Story buildings (two BRBF-Es and two EBFs), it was determined that BRBF-Es were easier to design due to the statically determinant system. The initial costs estimates of BRBF-Es; however, ranged upwards of 30% more cost than EBFs. Therefore, the initial investment of more intensive structural engineering ...


Minutes Of The Third Meeting Of The Forum For Promotion Of Soil Dynamics In India, Shamsher Prakash 2015 Missouri University of Science and Technology

Minutes Of The Third Meeting Of The Forum For Promotion Of Soil Dynamics In India, Shamsher Prakash

Forum for Promotion of Soil Dynamics in India

No abstract provided.


Agenda For Third Meeting Of The Forum For Promotion Of Soil Dynamics In India, Shamsher Prakash 2015 Missouri University of Science and Technology

Agenda For Third Meeting Of The Forum For Promotion Of Soil Dynamics In India, Shamsher Prakash

Forum for Promotion of Soil Dynamics in India

No abstract provided.


Membership Of Forum For Promotion Of Soil Dynamics In India, Shamsher Prakash 2015 Missouri University of Science and Technology

Membership Of Forum For Promotion Of Soil Dynamics In India, Shamsher Prakash

Forum for Promotion of Soil Dynamics in India

No abstract provided.


Syllabus For Course On Soil Dynamics In Ug Curriculum, Deepankar Choudhury 2015 IIT Bombay, Mumbai, India

Syllabus For Course On Soil Dynamics In Ug Curriculum, Deepankar Choudhury

Forum for Promotion of Soil Dynamics in India

No abstract provided.


Correlation Of Engineering Parameters Of The Presumpscot Formation To The Seismic Cone Penetration Test (Scptu), Mathew Hardison 2015 The University of Maine

Correlation Of Engineering Parameters Of The Presumpscot Formation To The Seismic Cone Penetration Test (Scptu), Mathew Hardison

Electronic Theses and Dissertations

The seismic cone penetration test with pore pressure measurement (SCPTu) is a geotechnical investigation technique which involves pushing a sensitized cone into the subsurface at a constant rate while continuously measuring tip resistance, sleeve friction, and pore pressure resulting from soil shearing. Additionally, shear wave velocity measurements can be collected at discrete intervals throughout the test. Empirical and theoretical correlations have been developed between these measurements and soil engineering properties such as preconsoldiation pressure and undrained shear strength. Soil classification, location of silt/sand seams, seismic design parameters, and liquefaction potential can also be obtained from SCPTu results.

The objective ...


Study On The Critical Velocity Of Groundwater To Form Subsidence Sinkholes In Karst Area, fuwei jiang 2015 University of South Florida

Study On The Critical Velocity Of Groundwater To Form Subsidence Sinkholes In Karst Area, Fuwei Jiang

Sinkhole Conference 2015

Subsidence sinkholes in karst area are a common geological hazard causing disaster accidents. However, the critical hydraulic conditions of forming subsidence sinkholes have not been well understood. Based on the theories of pipe flow, this paper derives expressions of a critical hydraulic condition for assessing whether it leads to subsidence sinkholes. A case study with samples of the cohesive soils taken from the Wuxuan county, Guangxi province, China, was conducted to evaluate the derived critical value. Combining the derived critical value and the monitoring data of hydraulic conditions in the study field, our results indicate that subsidence sinkholes are not ...


Numerical Simulation Of Karst Soil Cave Evolution, LONG JIA, Yan Meng, Zhende Guan, Lipeng Liu 2015 Institute of Karst Geology and Key Laboratory of karst collapse prevention

Numerical Simulation Of Karst Soil Cave Evolution, Long Jia, Yan Meng, Zhende Guan, Lipeng Liu

Sinkhole Conference 2015

This study is focused on numerical simulation of the formation and development of karst soil caves related to cover-collapse sinkholes. The so-called ‘karst soil cave’ refers to the caves formed in the soil layers above bedrock of sinkhole regions. Because the soil caves are formed and developed under groundwater seepage, studying groundwater level changes can help understand soil cave development and collapse. Based on the improved Terzaghi loosening pressure theory and using excess pore water pressure, two kinds of critical groundwater level decline are discussed. The first, denoted as ∆H0, is the critical groundwater level decline related to soil cave ...


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