Index Catalog // ScholarsArchive@OSU

Investigation of the behavior of diagonally cracked full-scale CRC deck-girders injected with epoxy resin and subjected to axial tension

Creator:: Smith, Matthew T. (Matthew Todd)
Abstract:: Article 1: Behavior of Epoxy Injected Diagonally Cracked Full-Scale CRC Deck-Girders. Many cast-in place reinforced concrete deck-girder bridges (RCDG) remain in the national inventory and exhibit diagonal cracking. Epoxy injection has been in use for several decades as a method for sealing diagonal cracks, but the effects on girder behavior...
Resource Type:: Masters Thesis
Full Text:: Concrete Beams,” Oregon Department of Transportation, Salem, OR, 2003, 19 pp. Popov, E. P., and

Advancements Toward the Simulation of Steel Structures in Fire Using OpenSees

Creator:: Gordon, James A.
Abstract:: Since the collapse of World Trade Center building number seven (WTC7), significant research has been done to understand the behavior of steel structures in fire and enable engineers to account for the behavior of steel framing systems exposed to fire during design. Despite these efforts, there are still significant barriers...
Resource Type:: Masters Thesis
Full Text:: impacts in my life which I will always be grateful for. I would like to thank Dr. Michael Scott and

Painterly rendering using space-time varying style parameters

Creator:: Kagaya, Mizuki
Abstract:: Automatic painterly rendering systems have been proposed but they opted for selecting a single style to generate paintings from images, which lacks the ability of creatively using multiple styles to focus important objects and deemphasize unimportant part of the scenes. We provide a multi-style painting framework to address this issue...
Resource Type:: Masters Thesis
Full Text:: the multi-style funtionality included in my current framework. Todd Kesterson has provided his

Effect of subduction zone earthquakes on SDOF bridge models

Creator:: Long, Yicheng
Abstract:: Current bridge design codes do not account for the effects of duration of mega-thrust subduction zone earthquakes. Furthermore, codes and even recent performance-based design methodologies only make use of the peak response quantities (forces, displacements, and ductility demands) and do not account for the increased number of inelastic cycles that...
Resource Type:: Masters Thesis
Full Text:: are studied. Effects of P-Delta are also investigated. Four measures of seismic demand are assumed

Multi-hazard framework and analysis of soil-bridge systems : long duration earthquake and tsunami loading

Creator:: Carey, Trevor J.
Abstract:: During the 2011 Great East Japan Earthquake and Tsunami, numerous bridge structures were damage or destroyed. The damage to bridge systems was caused by long duration strong ground shaking, tsunami inundation forces, or both. Long duration strong ground shaking from subduction zone earthquakes and the multi-hazard scenario of combined earthquake...
Resource Type:: Masters Thesis
Full Text:: Element Method (PFEM) was used to simulate impact of an idealized tsunami bore and the FEMA P-646 method

Assessing mental workload and situation awareness in the evaluation of real-time, critical user interfaces

Creator:: Strawn, Jordan J.
Abstract:: While there are many ways to evaluate a user interface design, the user's mental workload and situation awareness (SA) are particularly important considerations in the supervisory control of safety-critical systems. Typically, operators of these systems must monitor high-volume, time-sensitive status information. Interface design for this domain can be challenging and...
Resource Type:: Masters Thesis
Full Text:: . Mei-Ching Lien, Psychology; Dr. Michael Scott, Structural Engineering (Graduate Council

Ultra-low power receivers for wireless sensor networks

Creator:: Ayers, James S.
Abstract:: In wireless sensor network applications, low-power operation of the wireless receiver is critical. To address this need an ultra-low power Binary Frequency Shift Keying (BFSK) receiver using the super-regenerative architecture is developed. A prototype receiver is built and tested for operation in the 900 MHz ISM band. Lab measurements show...
Resource Type:: Dissertation
Full Text:: power continuous time filters. FOM = P/(Order ·BW ) . . 20 3.1 Specifications and power estimation for

Autogenous deformation and chemical shrinkage of high performance cementitious systems

Creator:: Fu, Tengfei
Abstract:: In the past ten years, renewed research interest has shown the benefits of internal curing by incorporating saturated lightweight fine aggregate (LWFA) in high performance concrete (HPC). As a result, the technology of internal curing has steadily progressed from laboratory studies to field applications. To determine the optimum LWFA content,...
Resource Type:: Masters Thesis
Full Text:: . I also would like to thank Dr. David Trejo, Dr. Michael H. Scott and Dr. Lech Muszyński for their

Numerical assessment of steel plate shear wall with coupling (SPSW-WC) system design procedure

Creator:: Li, Wennan
Abstract:: The Steel Plate Shear Wall (SPSW) system, is an innovative seismic lateral force resistant system, which has experienced increased use over the last three decades. The SPSW system is composed of boundary elements which anchor web plates that develop diagonal tension fields. A number of SPSW buildings have been built...
Resource Type:: Masters Thesis
Full Text:: . Andre R. Barbosa and Dr. Michael H. Scott. As the experts in civil engineering, their knowledge and

Testing and Modeling of a Cross-Laminated Timber Pier-and-Spandrel Seismic Retrofit Solution for Unreinforced Masonry Buildings

Creator:: Engleson, Renee M.
Abstract:: Cross-laminated timber (CLT) is an attractive building material because it is renewable, promotes fast installation, and possesses a high strength-to-weight ratio. The use of CLT in seismic applications has become increasingly common with the development of post-tensioned CLT rocking wall lateral force resisting systems (LFRS). The CLT pier-and-spandrel system designed,...
Resource Type:: Masters Thesis
Full Text:: Miller and Dr. Michael Scott for serving on my graduate committee and for their mentorship throughout

Development of rapid visual screening tool for seismic evaluation of wood-frame dwellings

Creator:: Lucksiri, Kraisorn
Abstract:: During the past several decades, earthquakes have caused extensive damage to buildings, including wood-frame, single-family dwellings, in the United States. In order to mitigate future losses, existing buildings in earthquake prone areas should be evaluated for their seismic safety. This is also an important issue for buildings in Oregon due...
Resource Type:: Dissertation
Full Text:: Lachenbruch, Dr. Michael Scott, and Dr. Kate Lajtha for serving as my dissertation committee members. Their

Fluid Structure Interaction for Cascading Seismic and Tsunami Events using Real-Time Hybrid Simulation

Creator:: Neumann, Christopher R.
Abstract:: While real-time hybrid simulation has been utilized for structures subjected to seismic events for decades, its use in fluid-structure interaction problems is still a novel endeavor. Gathering data for cascading seismic and tsunami events is difficult due to space constraints in existing experimental facilities, complications regarding the application of scaling...
Resource Type:: Masters Thesis
Full Text:: issues. Thank you all. I would like to thank my former professors, Dr. Chris Higgins and Dr. Michael

Seismic performance of diagrid steel structures using single and double friction mass dampers

Creator:: Ramadhan, Garlan
Abstract:: The steel diagrid structural system is a recent load bearing and lateral resisting structural system for tall building structures that is relatively unexplored in the western United States. One possible reason for the little use of diagrid systems in earthquake prone regions is the lack of guidelines and application examples...
Resource Type:: Masters Thesis
Full Text:: , respectively. Illustration of this model is shown in Figure 2.1. The axial force (𝑃) of the friction

Coastal Soil and Structure Behavior during Earthquake-Tsunami Multi-Hazards

Creator:: Qiu, Yingqing
Abstract:: Coastal multi-hazards, i.e., earthquakes followed by tsunamis, induce severe damage to coastal infrastructure. The multi-hazards can cause soil liquefaction, which is one of the major concerns for evaluating sediments transport potential and structure failure mechanisms. The objectives for this work is threefold. First, to build and validate a soil numerical...
Resource Type:: Dissertation
Full Text:: conductivity is the most sensi- tive and uncertain parameter in the u − p form of Biot’s equation — a well

Tsunami and hurricane wave loads on bridge superstructures

Creator:: Azadbakht, Mohsen
Abstract:: This dissertation examines tsunami and hurricane wave loads on bridge superstructures. Tsunamis have caused significant damage to coastal communities in recent years. For example, the 2011 Great East Japan Earthquake and resulting Tohoku Tsunami destroyed infrastructure along the east coast of Japan including bridge superstructures. Recent hurricanes have also caused...
Resource Type:: Dissertation
Full Text:: thank my Ph.D. committee members, Dr. Andre Barbosa, Dr. Michael Olsen, Dr. Michael Scott, and Dr

Design and environmental performance of near-surface mounted carbon fiber reinforced polymer strips for shear strengthening reinforced concrete bridge girders

Creator:: Goebel, Jacob Hans
Abstract:: During the interstate expansion of the 1950s, many conventionally reinforced concrete deck girder bridges were built throughout the country. These now vintage bridges commonly exhibit diagonal cracking and rate inadequately for shear, thus they are candidates for shear strengthening to extend their useful life. Near-surface mounted (NSM) retrofitting is a...
Resource Type:: Masters Thesis
Full Text:: co-workers, including: Brandon Johnson, Mary Ann Triska, Tugrul Turan, Michael Dyson, Thomas

Adjacent structure response sensitivity to seismic events using the direct differentiation method

Creator:: White, William S.
Abstract:: The response of adjacent structural systems to earthquake motions is investigated using the finite element framework OpenSees. Results of sensitivity analyses demonstrate that structural response quantities can increase in either or both of the adjacent structures for specific configurations. The structural models used include steel moment-resisting frames and rigid shear...
Resource Type:: Masters Thesis
Full Text:: Mason and my unofficial co-advisor, Dr. Michael Scott. The understanding and guidance of Dr. Mason were

Numerical modeling of full-coupled fluid-structure interaction

Creator:: Yuk, Dongjun
Abstract:: A numerical model for the simulation of fully-coupled fluid-structure interaction is developed in this study. In modeling the fluid, the Reynolds Averaged Navier-Stokes equations are solved for an incompressible viscous fluid field and a k-ε model is employed for turbulence computations. Hydrodynamic forces obtained by the integration of the fluid...
Resource Type:: Dissertation
Full Text:: . Robert L. Higdon, Dr. Jack F. Higginbotham, Dr. Michael H. Scott for their time and effort spent

Visualization of N-ary Relationships

Creator:: Qu, Botong
Abstract:: N-ary relationships, which relate N entities where N is not necessarily two, are omnipresent in real life. In this thesis, we develop a visualization technique for N-ary relationships. First, we propose a visual metaphor that utilizes vertices and polygons to represent entities and N-ary relationships. Based on this visual metaphor,...
Resource Type:: Dissertation
Full Text:: research work. I want to thank my other committee members, Pankaj Jaiswal, Amir Nayyeri, and Michael Scott

A numerical wave tank based on coupled potential flow-viscous flow model

Creator:: Zhang, Yi
Abstract:: In this study, a coupled potential flow-viscous flow model is used for numerical wave tank simulation. The solver satisfies all the requirements for such a simulation environment. The coupling scheme is based on a non-overlapping heterogeneous domain decomposition method. In this method, the flow domain consists of two subdomains. In...
Resource Type:: Dissertation
Full Text:: ρ ∂u ∂t + ρu · ∇u = −∇p+ µ∇2u+ f , ∀(x, t) ∈ Ω1 × [0, T ], (2.1a) ∇ · u = 0, ∀(x, t) ∈ Ω1 × [0, T

Wind induced torsional fatigue behavior of truss bridge verticals

Creator:: Keller, Philipp
Abstract:: The Astoria-Megler Bridge is a 6.6 kilometer (4.1 mile) long bridge, connecting Oregon and Washington on US 101, with a continuous steel truss main span of 376 m (1232 ft). It is the second longest main span bridge of this type in the world. Due to vortex shedding, some of...
Resource Type:: Masters Thesis
Full Text:: , Dr. Thomas Miller, Dr. Michael Scott and Dr. Andrew Meigs, for their thoughtful questions, comments

Elevated Temperature Effects on the Shear Performance of a Cross-Laminated Timber (CLT) Wall-to-Floor Bracket Connection

Creator:: Mahr, Kolton J.
Abstract:: Connections in mass timber structural systems dissipate energy and transfer lateral forces from mass timber elements such as shear walls and diaphragms, providing critical load paths. Cross-laminated timber (CLT) is a prominent mass timber material used to manufacture wall and floor assemblies. Fire performance research of CLT walls and floors...
Resource Type:: Masters Thesis
Full Text:: shear walls using the FEMA P-695 (2009) methodology. When completed, the SPFs will be available for

Assessing the seismic performance of corroding RC bridge columns

Creator:: Guo, Yisen
Abstract:: Corrosion of reinforcement is recognized as the predominant factor that limits the service life of reinforced concrete (RC) structures exposed to aggressive environments. This corrosion deterioration can lead to damage resulting in capacity loss or even failure. For structures exposed to coastal marine environments or deicing or anti-icing applications, this...
Resource Type:: Masters Thesis
Full Text:: committee members Dr. Michael H. Scott, Dr. Solomon C. Yim, and Dr. Lech Muszynski for their helpful

Examination of lateral stiffness and strength of pitched residential roof diaphragms with implications for seismic design.

Creator:: Kirkham, William J.
Abstract:: There are about 80 million single-family dwellings (SFD) in the United States, predominantly of wood-frame construction. Of these, 68% are owner occupied. A home is typically the largest single investment of a family, and is often not covered by earthquake insurance, even where it is available. Of all SFD in...
Resource Type:: Dissertation

An experimental study and a three-dimensional numerical wave basin model of solitary wave impact on a vertical cylinder

Creator:: Zhang, Wenbin
Abstract:: An experiment on solitary wave impact on a vertical cylinder was conducted in the three-dimensional wave basin at the Oregon State University Hinsdale Wave Research Laboratory. The cylinder was designed using mechanic principles and finite element analysis techniques to enable accurate measurement of horizontal force and overturning moment. Video data...
Resource Type:: Masters Thesis
Full Text:: wave cases conducted in this study, and the averaged value, 26 1 1 0.9996 26s sii P P

Experimental and analytical investigation of ponding load effects on a steel joist roof system

Creator:: Stark, Duncan
Abstract:: Ponding of water on roof systems leading to collapse causes expensive damage and jeopardizes the life safety of building occupants. Current building codes and design specifications for flat roof systems offer minimal guidance in designing for ponding loads. The present research investigated ponding load effects on a long span, lightweight...
Resource Type:: Masters Thesis
Full Text:: companies FM Global ensures, which include about one third of S&P 1000 companies. FM global does not track

Experimental and Analytical Studies of Large-Scale Pile Caps

Creator:: Al-Sakin, Yasmeen
Abstract:: Pile caps are structural elements used to transfer loads from columns to a group of piles, which transfer them to stronger soil layers. Pile cap with horizontal distance between the column and piles less than twice its effective depth is categorized as "deep," where significant nonlinear strain distribution occurs through...
Resource Type:: Dissertation
Full Text:: . Erica Fischer, Dr. Judy Liu, and Dr. Michael Scott. My gratitude to the Higher Committee for

Structural Response of High-Performance Fiber-Reinforced Cementitious Composites: Evaluation, Simulation, and Sensitivity Analysis

Creator:: Khlef, Feras L.
Abstract:: The constitutive behavior of high-performance fiber-reinforced cementitious composites (HPFRCCs) under mechanical loading is characterized by significant tensile properties that play an essential role in the structural response of several applications in structural engineering. The significance of tensile properties of HPFRCCs in structural engineering is the focus of three manuscripts presented...
Resource Type:: Dissertation

Freeze-thaw durability of reinforced concrete deck girders strengthened for shear with surface-bonded carbon fiber-reinforced polymer

Creator:: Mitchell, Mikal Maxwell
Abstract:: Long-term durability of surface-bonded carbon fiber-reinforced polymer (CFRP) U-wraps for shear strengthening of reinforced concrete (RC) bridge members remains uncertain due to the limited field experience with these materials. This paper provides experimental results from the testing of full-scale RC bridge girder specimens after exposure to prolonged freeze-thaw cycling. CFRP...
Resource Type:: Masters Thesis

Finite Element Modeling Strategies for Seismic Collapse Assessment of Non-planar Slender Reinforced Concrete Structural Wall Resisting Systems

Creator:: Mohammed, Mohammed A.
Abstract:: For mid-rise and high rise buildings, slender reinforced concrete (RC) structural walls are commonly used as the main structural elements to resist lateral applied loads in high seismically areas around the globe. These RC structural walls can provide substantial deformation capacity, stiffness, and lateral strength through the contribution of their...
Resource Type:: Dissertation
Full Text:: contribution, this research would not have been possible. I would like to thank Dr. Michael H. Scott, Dr

Image rectification tool for evaluation of gusset plate connections in steel truss bridges

Creator:: Nguyen, Quang D.
Abstract:: A methodology was developed to permit rectification and metrification of digital images of steel truss gusset plate connections. The approach will enable rapid and accurate collection of field measurements as compared to traditional methods to enable structural evaluation of gusset plate connections. The program enables the operator to quickly create...
Resource Type:: Masters Thesis
Full Text:: . Page 43 8 References Arias, P.; Ordóñez, C.; Lorenzo, H.; Herraez, J.; Armesto J.; “Low

Design of an automated system for imaging and sorting soil mesofauna

Creator:: Chamblin, Mike A.
Abstract:: Identification and population counts of soil mesofauna can be an important tool for soil ecologists to determine the soil biodiversity. Information provided from population counts can give insight to soil ecologists about the effects of human land use, monitoring soil and water health, benefits of soil biodiversity in agriculture, and...
Resource Type:: Masters Thesis
Full Text:: robustus 1.09 0.789 O Xenillus sp1 1.53 0.803 P Ptenothrix sp1vim 0.615 0.547 Q Tetracanthella sp1 1.39

Scale effects on reinforced concrete beams strengthened for shear with discrete externally bonded carbon fiber-reinforced polymer U-wraps

Creator:: Dawson, Matthew Ryan
Abstract:: Current ACI design provisions for shear in reinforced concrete (RC) beams strengthened with externally bonded carbon fiber-reinforced polymer (CFRP) U-wraps may not adequately account for the effect of scale. This paper describes tests of 6 geometrically scaled beams to identify possible scale effects of such beams. Results indicated that effective...
Resource Type:: Masters Thesis

Algebraic Pappus Curves

Creator:: Hatase, Tatsuhiko
Abstract:: We show that Pappus Curves, introduced by R. Schwartz to study his dynamical system in the real projective plane generated by iterated applications of the classical Pappus Theorem, are algebraic exactly in the linear case. Our approach is to use properties of projective curves such as singular points, genus, number...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3.1 An Overmarked Box with vertices p, q, r, and s, distinguished points t and b, and

Probabilistic Multi-hazard Earthquake-Tsunami Structural Risk Assessment Framework

Creator:: Alam, Mohammad Shafiqual
Abstract:: Catastrophic earthquake and tsunami events that resulted in significant loss of life and property over the past two decades have raised the global awareness regarding the need to understand the response of communities and their built environment to multi-hazard extreme events. In recognition to this impending threat to the coastal...
Resource Type:: Dissertation
Full Text:: of the doctoral committee, Dr. Michael Scott, Dr. Solomon Yim, Dr. Daniel T. Cox, Dr. Debashis

New acoustic emission applications in civil engineering

Creator:: Schumacher, Thomas
Abstract:: Non-destructive testing methods and applications have become of increasing interest due to the worldwide aging and deteriorating infrastructure network. In the field of Civil Engineering, bridges and bridge components as well as non-structural elements such as roadway pavements for example, are affected. In particular, the Acoustic Emission (AE) technique offers...
Resource Type:: Dissertation
Full Text:: , Dr. Michael Scott, Dr. Daniel Cox, and Dr. Philip Humphrey served in my PhD committee and their

Space time coding in MIMO systems

Creator:: Xian, Liang
Abstract:: Multiple-input multiple-output (MIMO) antenna technology is promising for high-speed wireless communications without increasing the transmission band- width. Space time coding (STC) is a scheme that employs multiple antennas to increase transmission rate or to improve transmission quality. STC is used widely in mobile cellular networks, wireless local area networks (WLAN)...
Resource Type:: Dissertation
Full Text:: people that I met along the way. I am deeply indebted to Dr. Gabor C. Temes, Dr. Michael H. Scott, Dr

Failure analysis of pre-notched composite laminated plates under four-point bending conditions

Creator:: Arias Gonzales, Sergio
Abstract:: Ever since composite laminate technology was introduced into the aerospace and automotive industry, there has been a need to fully understand the damage progression experienced by composite laminated plates in the presence of a notch. While numerous research studies have been conducted on this matter when subjected to in-plane loads,...
Resource Type:: Dissertation
Full Text:: quite a great deal of experimental set-up with you. To Dr. Richard B. Peterson and Dr. Michael H

Experimental and analytical evaluation of conventionally reinforced deck-girder bridge bent caps with vintage details

Creator:: Senturk, Ahmet Ekin
Abstract:: Many conventionally reinforced concrete deck girder (RCDG) bridges were built in the US during the 1950s, throughout the expansion of the Interstate System. Designs followed the AASHO standard of the time, which permitted higher shear stress in concrete and reduced detailing requirements than permitted by current specifications. Many of these...
Resource Type:: Dissertation
Full Text:: . John Gambatese, Dr. Timothy Kennedy, and Dr. Michael Scott. Conducting large scale experiments

Three-dimensional experiments and modeling of anisotropic clay

Creator:: Anantanasakul, Pongpipat
Abstract:: This dissertation presents the results of a research effort conducted to better understand the stress-strain, volume change, shear band formation, and strength characteristics of normally consolidated anisotropic clay under fully three-dimensional stress states. A series of consolidated drained true triaxial tests with a constant mean effective stress and constant Lode...
Resource Type:: Dissertation
Full Text:: , guidance, and help, this dissertation would not have materialized. I would like to thank Dr. Michael H

Numerical Studies on Fluid-Structure Interaction and Applications

Creator:: Chen, Ming
Abstract:: Fluid-structure interaction (FSI) has been of significant research interest worldwide over the past several decades because of its variety of applications in both offshore and coastal engineering. Researchers analyzing FSI systems rely heavily on experimental tests in model scale in laboratories or large-scale sea trials. However, these tests are often...
Resource Type:: Dissertation
Full Text:: and Prof. Michael Scott, who offered advice and reviewed my research work. I also very much

Shear reinforcement effects of discrete columns in liquefiable soils

Creator:: Rayamajhi, Deepak
Abstract:: Discrete columns, such as stone and soil-cement columns, are often used to improve the liquefaction resistance of loose sandy ground. In particular, stone columns are considered to increase resistance potential by densification, drainage, and reinforcement mechanisms. For silty soil, the shear stress reduction resulting from the reinforcing effect of stiffer...
Resource Type:: Dissertation
Full Text:: , Dr. Armin W. Stuedlein, Dr. Michael H. Scott, Dr. H. Benjamin Mason, and Dr. Michelle C. Odden (GCR

Hybridized framing to modify load paths and enhance wood shearwall performance

Creator:: Bultena, Sarah M.
Abstract:: Heavy timber framing relies primarily on bracing to withstand lateral loads due to earthquakes and wind events. Bracing configurations in heavy timber framed buildings vary widely and include cross bracing, knee bracing, and other geometries. Many heavy timber frames constructed during colonial American times are still standing, exceeding the expected...
Resource Type:: Masters Thesis
Full Text:: . Unit shear comparisons for shearwalls under lateral loads. ............... 35 3.3. P-values from

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