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Articles 1711 - 1740 of 4011

Full-Text Articles in Civil and Environmental Engineering

Str-953: Burst Pressure Assessment For Pipelines With Multiple Corrosion Defects, Bipul Chandra Mondal, Ashutosh Sutra Dhar Jun 2016

Str-953: Burst Pressure Assessment For Pipelines With Multiple Corrosion Defects, Bipul Chandra Mondal, Ashutosh Sutra Dhar

Canadian Society for Civil Engineering

Pipeline with multiple corrosion defects are often observed in the field. The strength of pipe with multiple corrosion patches depends on the corrosion patch intensity, their locations along longitudinal and circumferential directions of the pipe, in addition to the parameters influencing the strength of pipe with single corrosion defect. The existing design codes recommend the spacing between the corrosion patches when the interacting corrosion patches can be considered as a single patch for calculating the burst pressure of the defected pipe. In this paper, the strength and deformation characteristics of corroded pipe are investigated using finite element analysis. The parameters …

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Str-954: Flexural Behavior Of Sandwich Panels Made Of Frp Composites: Synthetic And Natural Fibers, Pedram Sadeghian, Dimo Hristozov, Laura Woblewski Jun 2016

Str-954: Flexural Behavior Of Sandwich Panels Made Of Frp Composites: Synthetic And Natural Fibers, Pedram Sadeghian, Dimo Hristozov, Laura Woblewski

Canadian Society for Civil Engineering

Sandwich panels made of fiber-reinforced polymer (FRP) skins and light-weight core materials have the potential to be effectively used in several structural applications such as cladding, decking, and roofing panels. The FRP skins resist the tensile and compressive stresses resulting from the flexure induced by transverse loadings and the core resists shear stresses, serves as insulation, and separates the FRP skins at a desired distance to provide required moment of inertial. In this study, two types of fiber materials, namely synthetic (glass) and natural (flax) fibers, as well as two types of core materials, namely polypropylene honeycomb (thickness: 6.4, 12.7, …

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Str-956: Prestressed Timber Structures For Multi-Storied Buildings: From Theory To Practice, Asif Iqbal Jun 2016

Str-956: Prestressed Timber Structures For Multi-Storied Buildings: From Theory To Practice, Asif Iqbal

Canadian Society for Civil Engineering

A new generation of buildings have been designed in recent years with an innovative structural system developed in New Zealand over the last decade. Conventional post-tensioning is combined with timber structures made of engineered wood products to produce highly efficient systems suitable for supporting long floor spans. The moment connections are particularly useful in structures designed for seismic regions. The post-tensioning ensures self-centering in addition to ductility provided by additional energy dissipating elements within the connections. Extensive experimental and numerical studies have confirmed the expected performance of the systems and design procedures have been developed for practical applications. A summary …

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Str-957: Effects Of Clt-Infill Walls On The Collapse Behavior Of Steel Moment Resisting Frames, Matiyas A. Bezabeh, Solomon Tesfamariam Jun 2016

Str-957: Effects Of Clt-Infill Walls On The Collapse Behavior Of Steel Moment Resisting Frames, Matiyas A. Bezabeh, Solomon Tesfamariam

Canadian Society for Civil Engineering

Over the past six years, to increase the use of renewable materials in the construction industry, a novel steel-timber hybrid building system was developed and studied at the University of British Columbia and FPInnovations. The hybrid structural system was a steel moment resisting frames (SMRFs) with Cross Laminated Timber (CLT) infill walls. These studies were mainly on developing: novel connection types, new constitutive laws for the CLT walls, and force-based and displacement-based design guidelines. The effect of CLT infills on the collapse risk of the SMRFs was not explicitly investigated, and is the topic of this paper. With consideration of …

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Str-959: Optimization Of A Polygonal Hollow Structural Steel Section In The Elastic Region, John Samuel Kabanda, Colin Macdougall Jun 2016

Str-959: Optimization Of A Polygonal Hollow Structural Steel Section In The Elastic Region, John Samuel Kabanda, Colin Macdougall

Canadian Society for Civil Engineering

Square, rectangular, circular, elliptical, and oval steel hollow structural sections are commonly used in a wide range of structural applications. The need for deep sections with increased bending stiffness has been the motivation for polygonal hollow structural sections. Polygonal hollow structural sections can have a higher bending strength, and rotational capacity when compared to traditional rectangular or square hollow structural sections with similar cross-sectional area. This paper discusses the numerical optimization of one such polygonal hollow structural section currently used in Canada. Previously conducted full-scale beam bending tests provide data for the calibration of the numerical model. The optimized cross-section …

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Str-960: Eliminating Environmental Influences In Vibration-Based Damage Detection Using Armax Residual Error And Artificial Neural Networks, Haiyang H. Zhang, Mustafa Gül Jun 2016

Str-960: Eliminating Environmental Influences In Vibration-Based Damage Detection Using Armax Residual Error And Artificial Neural Networks, Haiyang H. Zhang, Mustafa Gül

Canadian Society for Civil Engineering

Despite offering a great promise for continuous and automated monitoring of civil infrastructure systems, vibration-based damage detection methods may yield false positives and negatives due to environmental and/or operational effects. This paper presents a method based on ARMAX residual error in conjunction with Artificial Neural Networks (ANNs) to eliminate the environmental effects from damage detection process. A finite element model of a bridge type structure was simulated with different damage scenarios under various temperatures. Damage features obtained from statistical process on ARMAX residual errors were then compared between with and without environmental effects. Artificial neural networks were trained to learn …

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Str-961: Frp Shear Connectors For Reinforced Concrete Composite Elements, Jehad Alkatan, Amr El Ragaby, Faouzi Ghrib Jun 2016

Str-961: Frp Shear Connectors For Reinforced Concrete Composite Elements, Jehad Alkatan, Amr El Ragaby, Faouzi Ghrib

Canadian Society for Civil Engineering

Currently, friction shear dowels (steel stirrups) are being used in bridge construction at the interface plane between the cast-in-place deck slab and the precast girder to ensure the composite action for stronger cross section. As the bridge deck slab deteriorated over time due to the environmental conditions, these shear steel dowels are also susceptible to sever corrosion and will need replacement, especially when de-icing salt is used. This results in gradual loss of the composite behavior and strength of the composite section. Fiber reinforced polymers (FRPs) reinforcements have shown to be an effective alternative to black steel as flexure and …

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Str-962: Flexural Strengthening Of Rc Beams Using Glass-Frcm, Abdulla Jabr, Amr El Ragaby, Faouzi Ghrib Jun 2016

Str-962: Flexural Strengthening Of Rc Beams Using Glass-Frcm, Abdulla Jabr, Amr El Ragaby, Faouzi Ghrib

Canadian Society for Civil Engineering

Externally bonded Fiber reinforced polymer (FRP) sheets made of fiber net embedded in epoxy matrix has been successfully used in the repair and strengthening of both the shear and flexural capacities of reinforced concrete (RC) beams, slabs and columns since the 90's. Although the epoxy gives the system most of its durability, it is also responsible for many disadvantages, such as poor performance in elevated temperature and fire, lack of permeability, as it traps moisture, and degradation when exposed to ultraviolet radiation. In order to avoid such drawbacks, composite material utilizing cement-based matrix called Fabric Reinforced Cementitious Matrix (FRCM) has …

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Str-964: Studies On Vibration Serviceability Assessment Of Aluminum Pedestrian Bridges, Stanley H. Fong, Scott Walbridge, Sriram Narasimhan Jun 2016

Str-964: Studies On Vibration Serviceability Assessment Of Aluminum Pedestrian Bridges, Stanley H. Fong, Scott Walbridge, Sriram Narasimhan

Canadian Society for Civil Engineering

Vibration serviceability is often the governing design factor for slender, lightweight footbridges. However, there is currently a large gap that exists between our understanding from a modeling perspective and their actual vibration behaviour. Recent experimental tests conducted at the University of Waterloo have underscored these discrepancies and have provided an unique opportunity to not only validate many of the models currently in use, but also to propose new modifications to better align with experimental test results. Specifically, issues such as how to design for lateral vibrations and crowd-induced loading and calibration of load factors, will be addressed in this presentation. …

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Str-966: Seismic Retrofit Of Existing Low-Rise Steel Buildings In Eastern Canada Using Rocking Braced Frame System, Robert Tremblay, Paul Mottier, Colin Rogers Jun 2016

Str-966: Seismic Retrofit Of Existing Low-Rise Steel Buildings In Eastern Canada Using Rocking Braced Frame System, Robert Tremblay, Paul Mottier, Colin Rogers

Canadian Society for Civil Engineering

A promising retrofit strategy consists of allowing deficient braced frames to rock at their bases to reduce the force demands on the structure and the foundation. For low-rise buildings, modifications to the structure may be limited to the braced frames, which then represent a very effective solution when compared to other approaches where alterations are needed along the entire lateral load path. In the article, the rocking braced frame solution is investigated for the seismic retrofit of 3-storey typical office buildings designed in accordance with codes prevailing in the early 1980s. The frames are located in Montreal, QC, and firm …

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Str-968: Wavelet Entropy-Based Damage Identification Technique For Hybrid Frp-Concrete Structures, Mohammad Moravvej, Mamdouh El-Badry, Parham Joulani Jun 2016

Str-968: Wavelet Entropy-Based Damage Identification Technique For Hybrid Frp-Concrete Structures, Mohammad Moravvej, Mamdouh El-Badry, Parham Joulani

Canadian Society for Civil Engineering

Civil infrastructure, particularly bridges, is designed and built to be safe against failure and to perform satisfactorily during their service life. However, this infrastructure has been deteriorating at an alarming rate due to aging, inadequate maintenance, adverse environmental conditions, and constantly growing transportation demand. Utilization of corrosion-resistant composite materials, particularly fibre-reinforced polymers (FRP), has been an encouraging solution for the durability problems of concrete bridges. However, similar to conventional structures, the performance of hybrid FRP-concrete structures can be affected by various types of damage. Therefore, in order to ensure both safety and serviceability of these structures, it is essential to …

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Str-969: Seismic Design Procedure For Steel Multi-Tiered Concentrically Braced Frames Beyond Csa S16 Limit, Ali Imanpour, Robert Tremblay Jun 2016

Str-969: Seismic Design Procedure For Steel Multi-Tiered Concentrically Braced Frames Beyond Csa S16 Limit, Ali Imanpour, Robert Tremblay

Canadian Society for Civil Engineering

Steel Multi-Tiered Braced Frames (MT-BFs) generally represents a more practical and cost-effective solution in tall single storey steel buildings such as airplane hangars, recreational buildings or convention centers. Special seismic design requirements including column design for in-plane and out-of-plane flexural demands have been introduced for MT-BFs in the Canadian steel design standard CSA S16. In the current CSA S16, MT-BFs are also limited to three and five tiers, respectively, for Type MD (moderately ductile) and Type LD (limited ductility) braced frame categories. In this paper, a 4-tiered Type MD braced frame, exceeding the 3-tier height limit, is designed with explicit …

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Str-972: Top-Down Construction Of The New Lrt Overhead Bridge, Kitchener, Ontario, Brad R. Craig, Jeffrey Giroux Jun 2016

Str-972: Top-Down Construction Of The New Lrt Overhead Bridge, Kitchener, Ontario, Brad R. Craig, Jeffrey Giroux

Canadian Society for Civil Engineering

A new Light Rail Transit (LRT) system is being constructed in Waterloo Region. The first phase of construction is scheduled for completion in 2017 and will connect Conestoga Mall in the City of Waterloo and Fairview Park Mall in the City of Kitchener, a distance of 19 km. The LRT route crosses the existing Conestoga Parkway (Highway 7/8) in Kitchener-Waterloo, requiring the construction of a new structure under the busy freeway. In 2014-15, the Ministry of Transportation, Ontario (MTO) administered the construction of the new single span bridge using a unique top-down construction technique.

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Str-973: Static Load Behaviour Of Hybrid Frp-Concrete Two-Panel Truss Girders Reinforced With Double-Headed Gfrp Bars, Parham Joulani, Mamdouh El-Badry, Mohammad Moravvej Jun 2016

Str-973: Static Load Behaviour Of Hybrid Frp-Concrete Two-Panel Truss Girders Reinforced With Double-Headed Gfrp Bars, Parham Joulani, Mamdouh El-Badry, Mohammad Moravvej

Canadian Society for Civil Engineering

The results of an experimental investigation into the behaviour of precast hybrid FRP-concrete, two-panel truss girders under static loading are presented. The investigation is part of a comprehensive research program on the development of a corrosion-free system for short and medium span bridges. The truss girders consist of pretensioned concrete chords connected by vertical and diagonal truss elements made of glass FRP tubes filled with concrete. The truss elements are reinforced and connected to the top and bottom chords by means of long double-headed steel or glass FRP bars. The top and bottom chords are also reinforced with glass FRP …

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Str-975: Effect Of Shear Span To Depth Ratio On Seismic Performance Of Reinforced Masonry Shear Walls, Hany M. Seif Eldin, Khaled Galal Jun 2016

Str-975: Effect Of Shear Span To Depth Ratio On Seismic Performance Of Reinforced Masonry Shear Walls, Hany M. Seif Eldin, Khaled Galal

Canadian Society for Civil Engineering

Over the past few decades there has been a substantial increase in the number of multi-story buildings constructed with reinforced masonry (RM). Similar to reinforced concrete (RC) buildings, shear walls are a popular lateral load resisting system in regions of high seismic activity due to its capability to provide lateral stiffness, strength and energy dissipation. One of the parameters that affects the inelastic behaviour and ductility of RM shear walls is the shear span to depth ratio, M/Vdv. This paper experimentally investigates the effect of M/Vdv on the seismic performance of RM shear walls that are dominated by diagonal …

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Str-976: Effect Of Horizontal Reinforcement Anchorage End Detail On Seismic Performance Of Reinforced Masonry Shear Walls, Hany M. Seif Eldin, Khaled Galal Jun 2016

Str-976: Effect Of Horizontal Reinforcement Anchorage End Detail On Seismic Performance Of Reinforced Masonry Shear Walls, Hany M. Seif Eldin, Khaled Galal

Canadian Society for Civil Engineering

The most recent design codes for masonry structures necessitate the use of reinforced masonry (RM) shear walls in medium and high seismic areas. There are several factors that control the contribution of the horizontal reinforcement to the in-plane shear capacity of RM shear walls. One of these factors is its anchorage end detail. The current version of the Canadian Standards Association CSA S304-14 for design of masonry structures requires that the anchorage of the horizontal reinforcing bars in the plastic hinge region shall have a 90° or more standard hook at the ends of the wall. However, a 180° standard …

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Str-978: A Hysteresis Model For The Piston-Based Self-Centering Bracing System Considering Residual Deformation, A. B. M. Haque Rafiqul, Siriwut Sasibut, Feng Rong, M. Shahria Alam Jun 2016

Str-978: A Hysteresis Model For The Piston-Based Self-Centering Bracing System Considering Residual Deformation, A. B. M. Haque Rafiqul, Siriwut Sasibut, Feng Rong, M. Shahria Alam

Canadian Society for Civil Engineering

A load deformation hysteresis model has been developed for the piston based self-centering (PBSC) bracing system. This bracing system utilizes shaft-piston mechanism for transferring load to its core energy dissipating elements, which are made of Nickel Titanium alloy (NiTinol) bars. These bars provide the brace its strength as well as the self-centering capability. Although in theory, the NiTinol based shape memory alloy bars are supposed to come back to their original shape after large nonlinear deformations, in reality, they experience residual deformation. The hysteresis models, which are currently available for capturing the behavior of self-centering systems, are known as flag …

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Str-987: Analysis Of Rectangular Hollow Section Trusses With Overlapped K-Connections, Kyle Tousignant, Jeffrey A. Packer Jun 2016

Str-987: Analysis Of Rectangular Hollow Section Trusses With Overlapped K-Connections, Kyle Tousignant, Jeffrey A. Packer

Canadian Society for Civil Engineering

A ten-metre span, simply-supported, overlap-jointed, rectangular hollow section (RHS) Warren truss was tested elastically by applying a single quasi-static point load to various chord panel points to obtain experimental axial force, bending moment, and truss deflection patterns. A total of 53 axial forces and bending moments were measured in the chord and web members during two tests, and deflections at panel points along the bottom chord were measured during a broader series of nine tests. The theoretical behaviour given by practical frame analysis models, consisting of: (i) all joints pinned and concentric; (ii) all joints rigid and concentric; (iii) pin-ended …

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Str-988: Post-Fire Residual Strength Of Glass Fibre Reinforced Polymer (Gfrp) Bars, Hamzeh Hajiloo, Mark F. Green Jun 2016

Str-988: Post-Fire Residual Strength Of Glass Fibre Reinforced Polymer (Gfrp) Bars, Hamzeh Hajiloo, Mark F. Green

Canadian Society for Civil Engineering

Lack of reliable and adequate information on material characteristics of glass fibre reinforced polymer (GFRP) at elevated temperatures lowers the accuracy of analytical and design models developed to predict the behaviour of GFRP reinforced concrete members. There is an essential need to assess the remaining strength of bridge and building components after exposure to fire to determine if repair or replacement is required. This paper presents experimental results of a series of tensile tests on GFRP reinforcing bars after exposure to elevated temperatures. GFRP specimens with nominal diameter of 16 mm were exposed to different temperatures in an electric furnace. …

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Str-990: Sustainable Grouted Helical Piles: Materials And Performance, Mohamed A. A. Mansour, Moustafa Aboutabikh, Ahmed M. Soliman, M. Hesham El Naggar Jun 2016

Str-990: Sustainable Grouted Helical Piles: Materials And Performance, Mohamed A. A. Mansour, Moustafa Aboutabikh, Ahmed M. Soliman, M. Hesham El Naggar

Canadian Society for Civil Engineering

Cementitious materials are widely used as a construction material all over the world. However, cement industry has high environmental impact such as the release of CO2 and the consumption of natural resources for its manufacturing energy. Therefore, reducing cement consumption is vital to achieve sustainable green construction practices. In this study, the effects of using treated oil sand waste (TOSW) as a partial replacement of cement in grouted helical pile applications were investigated. Fresh and hardened properties of the green grout incorporating different percentages of TOSW were evaluated. In addition, a model scale grouted helical pile with the green grout …

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Str-992: Damage Detection Of Uhp-Frc Plates Using Random Decrement Technique, Azita Pourrastegar, Hesham Othman, Hesham Marzouk Jun 2016

Str-992: Damage Detection Of Uhp-Frc Plates Using Random Decrement Technique, Azita Pourrastegar, Hesham Othman, Hesham Marzouk

Canadian Society for Civil Engineering

This paper is about structural health monitoring using Random Decrement (RD) technique for Ultra High Performance Fiber Reinforced Concrete (UHP-FRC) slabs. Five simply supported slabs with identical dimensions are tested using low-velocity impact technique. Multi-impact load is applied at the mid-point of the UHP-FRC slabs by dropping a 475 kg steel weight from a constant height of 4.15 m. Two parameters are considered: namely: the steel reinforcement ratio, and the steel fiber volume content. The natural frequencies (eigenvalues) and corresponding mode shapes (eigenvectors) of tested plates are extracted numerically using linear perturbation analysis available in ABAQUS (Lanczos solver) to verify …

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Str-993: Behaviour Of Fire-Damaged Engineered Timber Beams, Hailey Quiquero, John Gales Jun 2016

Str-993: Behaviour Of Fire-Damaged Engineered Timber Beams, Hailey Quiquero, John Gales

Canadian Society for Civil Engineering

Recently in Canada, the national building code has been amended to include mid-rise engineered timber buildings. The code also contains an allowance for Alternative Solutions, in which taller and more complex engineered timber structures may be built with sufficient research and proof of performance. For sustainable material use in infrastructure, an environmentally conscious population is motivating the employment of new engineered timber constructions. The purpose of this study is to investigate the behaviour of timber members, specifically glulam, before and after fire damage to inform future testing of large-scale engineered timber building systems. The experiments provide valuable data with …

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Str-991: Energy Harvesting Methods For Structural Health Monitoring Using Wireless Sensors: A Review, Srishti Banerji, Ashutosh Bagchi, Shervin Khazaeli Jun 2016

Str-991: Energy Harvesting Methods For Structural Health Monitoring Using Wireless Sensors: A Review, Srishti Banerji, Ashutosh Bagchi, Shervin Khazaeli

Canadian Society for Civil Engineering

Structural Health Monitoring (SHM) implies monitoring the performance of structures using sensors to get an advance warning of the loss of structural capacity or potential collapse. Wireless-sensor based monitoring system is found to be advantageous over traditional wire-based system because of their ease of implementation and maintenance. However, power supply is an important concern for wireless sensors used in monitoring of civil engineering structures. While there are different efficient power usage methods and power supply solutions available for wireless sensors, their applications to SHM systems for civil infrastructure are not standardized. Energy harvesting by means of converting energy from the …

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Str-994: Investigation Of L-Shaped Low-Rise And High-Rise Buildings Response To Nbcc 2005 And 2010 Seismic Loads, Ahmed Hamada, Ashraf A. El Damatty Jun 2016

Str-994: Investigation Of L-Shaped Low-Rise And High-Rise Buildings Response To Nbcc 2005 And 2010 Seismic Loads, Ahmed Hamada, Ashraf A. El Damatty

Canadian Society for Civil Engineering

The current study builds on a previous study conducted by the authors that investigated the seismic provisions of the National Building Code of Canada (NBCC) 2005 and 2010, pertaining to the loading and analysis of irregular L-shaped buildings. The study uses low-rise and high-rise L-shaped buildings as case studies. Three-dimensional finite element models of the two irregular L-shaped buildings were developed and discussed in the previous study. The lateral resisting system of the low-rise buildings consists of concrete shear walls, while the high-rise building consists of a combination of concrete shear walls and concrete rigid frames. Low and high-rise concrete …

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Str-995: Calibration Of An Analytical Method For Vehicle-Induced Vibrations On Flexible Bridges, Zachary J. Taylor, Pierre-Olivier Dallaire, Marco Accardo, Christian Mercier, Martin Talbot, Stoyan Stoyanoff Jun 2016

Str-995: Calibration Of An Analytical Method For Vehicle-Induced Vibrations On Flexible Bridges, Zachary J. Taylor, Pierre-Olivier Dallaire, Marco Accardo, Christian Mercier, Martin Talbot, Stoyan Stoyanoff

Canadian Society for Civil Engineering

The results of full scale trials of heavy vehicle-induced vibrations on the Pierre Laporte Bridge are presented. The Pierre Laporte Bridge spans approximately 1 km having the longest main span of any suspension bridge in Canada. The tests were performed during short periods of complete bridge closure on October 27 and 28, 2014. During the tests, the acceleration of the bridge was recorded at multiple locations in addition to measurements of the vertical and pitching accelerations of the testing vehicle itself. The results of these tests are used to calibrate an analytical tool developed to screen bridge designs for potential …

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Str-996: Optimization For Bridge Type Selection Using Artificial Neural Networks, Elie M. Otayek, Ahmad Jrade Jun 2016

Str-996: Optimization For Bridge Type Selection Using Artificial Neural Networks, Elie M. Otayek, Ahmad Jrade

Canadian Society for Civil Engineering

Many Researchers have attempted to establish a methodology for the selection of bridge type in a systematic manner. Knowledge based systems (KBS) and other Expert Systems (ES) have been used for this purpose but they have some limitations and restrictions. This paper proposes a methodology to implement a Decision Support System (DSS) in an artificial intelligent environment that aims to suggest a bridge type with its main components at the conceptual design phase, based on the characteristics and performance of existing and similar bridges in order to predict the performance of proposed ones that have been analyzed by decision makers …

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Str-997: Instrumentation And Long-Term Monitoring Of An Integral-Abutment Bridge Superstructure, Shelley A. Huntley, Arun J. Valsangkar Jun 2016

Str-997: Instrumentation And Long-Term Monitoring Of An Integral-Abutment Bridge Superstructure, Shelley A. Huntley, Arun J. Valsangkar

Canadian Society for Civil Engineering

Strain gauges were installed in the girders and deck of an integral abutment bridge to determine the behaviour of the superstructure to daily and seasonal thermal fluctuations. The two-span, 76 m-long bridge has no expansion joints; rather, the prestressed-concrete girders are cast directly into the abutments which are in turn supported by flexible pile foundations. Details of field instrumentation along with monitored data over a period of eight years are presented in this paper. Gauges measured the longitudinal strain in the girders and deck and were positioned at different elevations to provide a strain distribution across the superstructure depth. From …

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Str-998: Design Of Fiber-Reinforced Tunnel Segmental Lining According To New Aci Report, Mehdi Bakhshi, Verya Nasri Jun 2016

Str-998: Design Of Fiber-Reinforced Tunnel Segmental Lining According To New Aci Report, Mehdi Bakhshi, Verya Nasri

Canadian Society for Civil Engineering

Fiber reinforcement has emerged as an alternative to steel bars in precast concrete segments due to advantages such as saving cost and reducing production time while developing a more robust product with improved handling and long-term durability. ACI recently drafted a new report as the first design guideline on FRC tunnel segments to provide specific guidance for this emerging technology. This document offers general information on the history of FRC precast segments from tunneling projects throughout the world; a procedure for structural analysis and design based on governing load cases, and a description of the material parameters, tests and analyses …

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Str-999: Intelligent Monitoring System Reveals New Information About The Champlain Bridge, Ehsan Sobhani, Armineh Garabedian, Dominic Lavigne, Chakib Kassem, René Tinawi Jun 2016

Str-999: Intelligent Monitoring System Reveals New Information About The Champlain Bridge, Ehsan Sobhani, Armineh Garabedian, Dominic Lavigne, Chakib Kassem, René Tinawi

Canadian Society for Civil Engineering

The Champlain Bridge, constructed in 1957, is one of Canada’s busiest and most economically critical bridges. This 3.4km-long bridge consists of as many as 50 simply supported spans, 50 to 53 m long, plus an elevated truss structure over the Saint Lawrence Seaway. Each span has a cross-section of seven precast post-tensioned girders supporting cast-in-place infill strips that constitute a deck with six traffic lanes. Like many other structures, Champlain Bridge is subjected to environmental, traffic or hydrological loads, which adversely affect the structural condition of the bridge. This structural degradation is further accelerated for the Champlain Bridge due to …

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Verifying Automated Prestressed Concrete Design Software For Mdot Bridge Design Standards, Hussein Kadhim Abood Khalaf Jun 2016

Verifying Automated Prestressed Concrete Design Software For Mdot Bridge Design Standards, Hussein Kadhim Abood Khalaf

Masters Theses

The design and analysis of bridges is a very critical and time consuming process. The automation of bridges design can save us time and effort, but the designer must have enough background with structural design of bridges in order to be able to analyze and understand the output of the automated design. This research shows the design and analysis of the superstructure of the US-27 Interchange Bridge at M-57 in Gratiot County of Washington Township, Michigan. The main purpose of this research is to establish a comprehensive design example following AAHTO LRFD Bridge Design Specifications and Michigan Bridge Design Manual. …

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