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Author : Ruifen Liu
Publisher :
ISBN 13 :
Total Pages : 157 pages
Book Rating : 4.:/5 (775 download)
Download or read book Precast Concrete Bridge Deck Panels Reinforced with Glass Fiber Reinforced Polymer Bars written by Ruifen Liu and published by . This book was released on 2011 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chris P. Pantelides
Publisher :
ISBN 13 :
Total Pages : 87 pages
Book Rating : 4.:/5 (85 download)
Download or read book Health Monitoring of Precast Bridge Deck Panels Reinforced with Glass Fiber Polymer (GFRP) Bars written by Chris P. Pantelides and published by . This book was released on 2012 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research project investigates monitoring concrete precast panels for bridge decks that are reinforced with Glass Fiber Reinforced Polymer (GFRP) bars. Due to the lack of long term research on concrete members reinforced with GFRP bars, long term health monitoring is important to record the performance and limit states of the GFRP decks and bridge as a whole. In this research, data is collected on concrete strains, bridge deflections, vertical girder accelerations, as well as initial truck load testing and lifting strains.
Author : Korin McDonald Holden
Publisher :
ISBN 13 :
Total Pages : 132 pages
Book Rating : 4.:/5 (82 download)
Download or read book Health Monitoring of Precast Bridge Deck Panels with Glass Fiber Reinforced Polymer Bars written by Korin McDonald Holden and published by . This book was released on 2012 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chris P. Pantelides
Publisher :
ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (747 download)
Download or read book GFRP Reinforced Lightweight Precast Bridge Deck Panels written by Chris P. Pantelides and published by . This book was released on 2011 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research project investigates lightweight and normal weight concrete precast panels for highway bridge decks. The deck panels are reinforced with Glass Fiber Reinforced Polymer (GFRP) bars. Due to the lack of research on lightweight concrete members reinforced with GFRP bars, the AASHTO LRFD Bridge Design Guide Specifications for GFRP Reinforced Concrete Decks do not permit the use of lightweight concrete when GFRP bars are used as flexural reinforcement. In this research, the experimental performance of lightweight concrete versus normal weight concrete precast GFRP reinforced deck panels is investigated in terms of flexural capacity, panel deflections, and shear capacity.
Author : James McDaniel Ries
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (738 download)
Download or read book Health Monitoring of Precast Bridge Deck Panels Reinforced with Glass Fiber Reinforced Polymer Bars written by James McDaniel Ries and published by . This book was released on 2011 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Augustine Kuuku Banson
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (16 download)
Download or read book Precast Bridge Deck Joints Using FRP and Ultra-high Performance Concrete written by Augustine Kuuku Banson and published by . This book was released on 2013 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for rapid construction or replacement of highway bridge decks can be addressed by precast concrete elements reinforced with Glass Fiber Reinforced Polymer (GFRP) bars with cast-in-place joints made using Ultra-High Performance Concrete (UHPC). This thesis investigates the bond between GFRP bars and UHPC and splice length optimization to obtain narrow joints and simplified bar geometries. Multiple linear regression analyses of existing bond data indicate that the bar's Young's Modulus and embedded length are the most significant parameters that influence the average bond strength of sand-coated GFRP bars in UHPC: increasing either decreases the average bond strength. Linear-elastic uncracked Finite Element analysis of pull-out specimens indicates that reinforcing bars with low Young's Moduli have highly non-uniform bond distributions along their length and so exhibit high peak bond stresses and low average bond strengths. The higher average bond strengths observed for High Modulus (HM) GFRP bars compared to Low Modulus (LM) GFRP bars is likely because the HM GFRP bars have lower interlaminar shear strength. A methodology for GFRP reinforcement design that synthesizes provisions from the Flexural Design Method in the Canadian Highway Bridge Design Code including an additional new step to determine bar splice lengths in UHPC was developed. Splice lengths and bond resistance factors for HM GFRP bars in UHPC are determined by reliability analysis to resist either bar stresses due to the factored applied moments or the mean ultimate tensile strength of the bar. A significant reduction in splice length can be achieved if splices are designed to resist the bar stresses at factored applied moments. A new resistance factor of 0.5 for bond of GFRP bars in UHPC is also recommended.
Author :
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.3/5 (555 download)
Download or read book Studies on the Use of High-performance Concrete and FRP Reinforcement for the I225/Parker Road Bridge written by and published by . This book was released on 2003 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.3/5 (555 download)
Download or read book Specification and Design of Fiber Reinforced Bridge Deck Forms for Use on Wide Flange T-girders written by and published by . This book was released on 2007 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wide-flanged concrete girders are increasingly being used for highway bridges in Wisconsin. The objective of this research was to understand the state of the art of non-metallic SIP forms and to develop design guidelines and performance specifications that can be used locally for the construction of highway bridge decks. Four major types of stay-in-place (SIP) forms using fiber reinforced concrete (FRC) or fiber reinforced polymer (FRP) materials were investigated: fiber reinforcements, grid reinforcements, bar reinforcements and pultruded profiles. The results were used to develop a model design and construction specification for non-structural, non-metallic, SIP forms in highway bridge decks.
Author : Sameh S. Badie
Publisher : Transportation Research Board
ISBN 13 : 0309099145
Total Pages : 119 pages
Book Rating : 4.3/5 (9 download)
Download or read book Full-depth Precast Concrete Bridge Deck Panel Systems written by Sameh S. Badie and published by Transportation Research Board. This book was released on 2008 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kimberly Ann Phillips
Publisher :
ISBN 13 :
Total Pages : 65 pages
Book Rating : 4.:/5 (67 download)
Download or read book Performance of a Bridge Deck with Glass Fiber Reinforced Polymer Bars as the Top Mat of Reinforcement written by Kimberly Ann Phillips and published by . This book was released on 2005 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research was to investigate the performance of glass fiber reinforced polymer (GFRP) bars as reinforcement for concrete decks. Today's rapid bridge deck deterioration is calling for a replacement for steel reinforcement. The advantages of GFRP such as its high tensile strength, light weight, and resistance to corrosion make it an attractive alternative to steel. The deck of one end-span of the Gills Creek Bridge was constructed with GFRP bars as the top mat and epoxy-coated steel bars as the bottom mat. Live load tests were performed in 2003, shortly after completion of construction, and again in 2004. In addition, tests were performed on the deck of the opposite end-span, which had all epoxy-coated steel reinforcing. The results of these tests were used to evaluate the girder distribution factors and impact factors of a GFRP reinforced bridge deck. In addition, a comparison of the results from the two test periods gives an indication of any changes in strains in the GFRP bars and if the deck is behaving differently than when first installed. The results were compared to the design standards specified by the American Concrete Institute in the Guide for the Design and Construction of Concrete Reinforced with FRP Bar to determine if the stresses in the deck were within the specified limits. The performances of the two end-spans were compared to determine if the GFRP reinforcement had any significant influence on overall bridge behavior. There were no significant differences in the behavior of the deck after 1 year of service and there was no visible cracking. The behavior of the two end-spans was similar, and the measured girder distribution factors were less than the AASHTO design recommendations. The impact factors were less than design values for the 2003 tests but higher than design values for the 2004 tests. Stresses in the GFRP reinforcing bars were much less than the design allowable stress and did not change significantly after 1 year of service. The strain gauges, vibrating wire gauges, and thermocouples in the bridge deck were monitored for approximately 1 year using a permanent data acquisition system. Daily, monthly, and long-term fluctuations in temperature and stresses were examined. The vibrating wire gauges were more reliable than the electrical resistance strain gauges, and the main influence on strain changes was temperature fluctuation. A cost/benefit analysis of using GFRP bars indicates their high initial costs are justified when compared to the costs of a concrete overlay.
Author : Jacob Bice
Publisher :
ISBN 13 :
Total Pages : 420 pages
Book Rating : 4.:/5 (532 download)
Download or read book Comparison Between Epoxy-coated Steel and Glass Fiber Reinforced Polymer Bars in a Concrete Highway Bridge Deck written by Jacob Bice and published by . This book was released on 2002 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hesham Tuwair
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (921 download)
Download or read book Development, Testing, and Analytical Modeling of Fiber-reinforced Polymer Bridge Deck Panels written by Hesham Tuwair and published by . This book was released on 2015 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A fiber-reinforced, polyurethane foam core was developed, tested, and evaluated as a possible replacement for the costly honeycomb core that is currently used to manufacture fiber-reinforced polymer (FRP) bridge deck panels. Replacing these panels would reduce both initial production costs and construction times while also enhancing structural performance. Experimental, numerical, and analytical investigations were each conducted. Three different polyurethane foam (PU) configurations were used for the inner core during the study's first phase. These configurations consisted of a high-density PU foam (Type 1), a gridwork of thin, interconnecting, glass fiber/resin webs that formed a bidirectional gridwork in-filled with a low-density PU foam (Type 2), and a trapezoidal-shaped, low-density PU foam that utilized E-glass web layers (Type 3). Based on the experimental results of this phase, the Type 3 core was recommended to move forward to the second phase of the study, where a larger-scale version of the Type 3, namely "−mid-scale panels," were tested both statically and dynamically. Analytical models and finite element analysis (FEA) were each conducted during a third phase. Analytical models were used to predict critical facesheet wrinkling that had been observed during phase two. A three-dimensional model using ABAQUS was developed to analyze each panel's behavior. A parametric study considering a wide variety of parameters was also conducted to further evaluate the behavior of the prototype panel. The fourth phase of this research investigated the performance of Type 3 panels under exposure to various environmental conditions to duplicate seasonal effects in Midwestern states. The results gathered from these four phases showed that the proposed Type 3 panel is a cost effective alternative to both honeycomb and reinforced concrete bridge decks."--Abstract, page iv.
Author : James Michael DeFreese
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (57 download)
Download or read book Glass Fiber Reinforced Polymer Bars as Top Mat Reinforcement for Bridge Decks written by James Michael DeFreese and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research were to characterize the material and bond properties of three commercially available GFRP (glass fiber reinforced polymer) reinforcing bars, and evaluate the effects of the material properties and the current ACI design recommendations (ACI 2001) on the design of a bridge deck with GFRP as top mat reinforcement. The tensile properties evaluated were ultimate tensile strength, tensile modulus of elasticity and ultimate rupture strain. Ultimate bond stress and load-slip behavior of the three types of bars were evaluated using beam-end bond stress tests. For the tensile tests, for each type of GFRP bar, three bar sizes were tested: No. 4, No. 5, and No. 6. For each bar size and manufacturer, five samples were tested. The average ultimate tensile strengths varied from 80.4 ksi to 119 ksi, with coefficients of variation for the five-bar samples ranging from 2.6% to 8.0%. The average moduli of elasticity for the three manufacturers were very similar, with a high of 6340 ksi and a low of 5800 ksi. All bars showed linear elastic behavior to rupture. The bar rupture strains varied from 1.4% to 1.9%. The bars also had similar average maximum bond stresses, with a high of 2600 psi and a low of 2360 psi. The load-slip behaviors exhibited by the three bar types were each unique. Pre-peak behavior was similar, but post-peak behavior varied depending on the surface treatment of the bar. The design material properties for each bar type were determined using the recommendations of ACI Committee 440 (ACI 2001). These properties are presented in Table 14. of the report. The property with the greatest influence on the selection of bar size and spacing for a bridge deck reinforced with GFRP reinforcement is the modulus of elasticity. The reinforcing bar with the highest modulus of elasticity will result in the most economical design in terms of materials required. Realistically, however, a bridge deck design that is based on the lowest value of each measured material property will not greatly increase the quantity of GFRP reinforcing, and will enable any of the manufactures' products to be used successfully in a given project.
Author : David A. Jacobson
Publisher :
ISBN 13 :
Total Pages : 438 pages
Book Rating : 4.:/5 (89 download)
Download or read book Experimental and Analytical Study of Fiber Reinforced Polymer (FRP) Grid-reinforced Concrete Bridge Decking written by David A. Jacobson and published by . This book was released on 2004 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Reuben Zylstra
Publisher :
ISBN 13 :
Total Pages : 141 pages
Book Rating : 4.:/5 (49 download)
Download or read book Evaluation of Fiber Reinforce Polymer Prestressed Panels/slabs for I-225/Parker Road Project written by Reuben Zylstra and published by . This book was released on 2001 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: As part of a national initiative sponsored by the Federal Highway Administration (FHWA) under the Innovative Bridge Research and Construction (IBRC) program, the Colorado Department of Transportation (CDOT) incorporated an innovative and emerging technology on the Parker road/I-225 interchange reconstruction project. For the first time in its history, CDOT put to work carbon fiber reinforced polymer (FRP) in precast bridge deck panels in place of steel tendons. Glass FRP was used as mild reinforcement in conjunction with carbon FRP and also in the construction of a bridge rail. FRP materials are highly resistant to corrosive action of chloride and have a higher strength to weight ratio than steel tendons. The primary objective of this study was to validate the mechanical properties and the performance of carbon and glass FRP bars as reinforcing agents for bridge decks at the I-225 and Parker road interchange. Included in this report is an overview of existing literature on FRP reinforcement, evaluation of the bond strength of the FRP bars using pullout tests, and load testing of three prestressed panels and two composite slabs to failure.
Author : Jason Kyle Cawrse
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (525 download)
Download or read book Proof Testing a Bridge Deck Design with Glass Fiber Reinforced Polymer Bars as Top Mat of Reinforcement written by Jason Kyle Cawrse and published by . This book was released on 2003 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this project was to test a full-scale prototype of a bridge deck design containing glass fiber reinforced polymer (GFRP) bars as the top mat of reinforcement. The test deck mimics the design of the deck of one span of the new bridge over Gills Creek on Rt. 668 in Franklin County, Virginia. The purpose of the tests was to verify the deck design and provide assurance that the deck will behave as expected. Aspects of the behavior of the bridge deck, such as failure load, failure mode, cracking load, crack widths, deflections, and internal stresses, were examined. Four tests were performed on the deck, all of which tested the deck in negative moment regions. The tests comprised two overhang tests, one test of the deck over an interior girder, and one test of a cantilever section of the composite deck and girder. The cantilever test modeled the deck in a continuous bridge over an interior support. From the tests, it was concluded that the design of the deck was quite conservative. The secondary objectives of this project were to comment on the construction of a bridge deck reinforced with GFRP bars, note the advantages and disadvantages, and critique the current state of the art of designing bridge decks with GFRP reinforcement. It was found that the advantages of construction with GFRP bars easily outweighed the disadvantages and that the placing of the top mat of GFRP bars was much easier than the placing of the bottom mat of steel bars. The state of the art for the design of bridge decks reinforced with GFRP bars was found to be generally conservative. Three primary criteria dictate the deck design: strength, allowable stresses in the GFRP bars, and crack widths. For this deck, the size and spacing of the transverse GFRP bars were governed by crack control criteria. In testing the deck, however, it was found that the measured crack widths were far smaller than the calculated widths. The measured bar stresses, after cracking, were below those calculated, and below the allowable for all but the cantilever test. The ultimate failure loads were between 3.7 and 7.6 times the design wheel load plus impact. All failures were due to punching shear and were between 91% and 149% of the predicted failure load. Current methods for calculating one-way shear grossly under-predicted capacity. The current design is safe and should prove to be low maintenance. Improvements in design approach, particularly for crack widths and one-way shear, could result in more economical designs in the future. Although current methods for calculating strength and serviceability requirement do not result in accurate predictions of behavior, they do result in conservative designs.
Author : Mohsen A. Issa
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (31 download)
Download or read book Experimental Evaluation of Full Depth Precast/prestressed Concrete Bridge Deck Panels written by Mohsen A. Issa and published by . This book was released on 2002 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: A literature review concerning the objectives of the project was completed. A significant number of published papers, reports, etc., were examined to determine the effectiveness of full depth precast panels for bridge deck replacement. A detailed description of the experimental methodology was developed which includes design and fabrication of the panels and assembly of the bridge. The design and construction process was carried out in cooperation with the project Technical Review Panel. The major components of the bridge deck system were investigated. This includes the transverse joints and the different materials within the joint as well as composite action. The materials investigated within the joint were polymer concrete, non-shrink grout, and set-45 for the transverse joint. The transverse joints were subjected to direct shear tests, direct tension tests, and flexure tests. These tests exhibited the excellent behavior of the system in terms of strength and failure modes. Shear key tests were also conducted. The shear connection study focused on investigating the composite behavior of the system based on varying the number of shear studs within a respective pocket as well as varying the number of pockets within a respective panel. The results indicated that this shear connection is extremely efficient in rendering the system under full composite action. Finite element analysis was conducted to determine the behavior of the shear connection prior to initiation of the actual full scale tests. In addition, finite element analysis was also performed with respect to the transverse joint tests in an effort to determine the behavior of the joints prior to actual testing. The most significant phase of the project was testing a full-scale model. The bridge was assembled in accordance with the procedures developed as part of the study on full-depth precast panels and the results obtained through this research. The system proved its effectiveness in withstanding the applied loading that exceeded eight times the truck loading in addition to the maximum negative and positive moment application. Only hairline cracking was observed in the deck at the maximum applied load. Of most significance was the fact that full composite action was achieved between the precast panels and the steel supporting system, and the exceptional performance of the transverse joint between adjacent panels.
