Study Of Internal Strains Developed In Concrete Decks At Early Ages In Steel Continuous Bridges

Download Study Of Internal Strains Developed In Concrete Decks At Early Ages In Steel Continuous Bridges full books in PDF, epub, and Kindle. Read online Study Of Internal Strains Developed In Concrete Decks At Early Ages In Steel Continuous Bridges ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Study of Internal Strains Developed in Concrete Decks at Early Ages in Steel Continuous Bridges

Author : Fernando Rafael Benitez Ortiz
Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (123 download)

DOWNLOAD NOW!

Book Synopsis Study of Internal Strains Developed in Concrete Decks at Early Ages in Steel Continuous Bridges by : Fernando Rafael Benitez Ortiz

Download or read book Study of Internal Strains Developed in Concrete Decks at Early Ages in Steel Continuous Bridges written by Fernando Rafael Benitez Ortiz and published by . This book was released on 2019 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Arkansas Department of Transportation (ARDOT) has identified bridge deck cracking shortly after concrete decks are placed and prior to applying traffic loads. Previous researchers have confirmed improper construction practices and design methods can lead to deck cracking. Currently, many contractors throughout Arkansas are using continuous deck pours. This construction approach may restrict the concrete slab from movement during early age shrinkage, causing tensile stresses to develop. The final stresses at the end of construction must be lower than the concrete tensile strength, if not cracking issues will develop. Eventually, these cracks may enlarge due to service load stresses and environmental damage. A nation-wide Department of Transportation (US DOTs) survey was performed to investigate the early age cracking extensiveness level in other state's bridges and what corrections, if any, they have made to address this problem. Additionally, Arkansas bridges with early age cracking were visited to examine any trends and inform instrumentation for bridge testing. A bridge deck was instrumented with 32 vibrating wire strain gauges prior to concrete placement to investigate strain and temperature changes in the first 14 days. Eurocode and ACI approximations for concrete mechanical properties were compared to field measured data for improving the understanding of an early age concrete deck behavior in a continuous steel bridge. Stress analysis study through the span length of bridge 030428 detected some locations prone to concrete cracking due to the variability of concrete mechanical properties and stress developed in the concrete deck. This thesis describes the results of this monitoring and anything that can be learned about formation of concrete stresses in continuous concrete bridge deck pours.

Behavior of Bridge with Internally Cured Concrete Deck Under Environmental and Truck Loading

Author : Waleed Khalid Hamid
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (123 download)

DOWNLOAD NOW!

Book Synopsis Behavior of Bridge with Internally Cured Concrete Deck Under Environmental and Truck Loading by : Waleed Khalid Hamid

Download or read book Behavior of Bridge with Internally Cured Concrete Deck Under Environmental and Truck Loading written by Waleed Khalid Hamid and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term performance of a bridge deck depends on its resistance to bridge cracking. Most of these cracks are initiated at the early age. Early age cracking of bridge decks is a typical issue in the U.S. that reduces bridge service life. Therefore, internally cured concrete (ICC) has been used in some states to reduce or eliminate the development of cracks in reinforced concrete decks. In this study, the early age behavior of ICC deck and the effect of the internal curing on the long-term behavior of the bridge was measured and evaluated in the laboratory and field for newly adjacent constructed bridge, which were located on Route 271 in Mayfield, Ohio. Two different types of concrete mixtures were utilized for the decks: conventional concrete (CC) and internally cured concrete (ICC). Firstly, the ICC and CC mixtures were examined in the laboratory in terms of a mechanical properties test, a plastic shrinkage test, a free shrinkage test, and a restrained shrinkage test. Second, the field behavior of an ICC deck and an adjacent CC deck during their early age and long-term performance were evaluated. Also, the shrinkage development for both decks was examined during the very early age. Instrumentation was used to measure the concrete and reinforcement strains and the temperature in both bridges. The instrumentation and results for both bridges are discussed. Laboratory results indicated that using pre-wetted lightweight concrete in the concrete mixture led to decreased density, coefficient of thermal expansion, and free shrinkage strain, and increased tensile strength and cracking time of concrete compared to conventional concrete. In the field, from the early age test, it was observed that the time to develop concrete shrinkage was approximately 5-6 hours after casting the deck of the ICC and the CC.

Strengthening of an Existing Continuous-span, Steel-beam, Concrete-deck Bridge by Post-tensioning

Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (1 download)

DOWNLOAD NOW!

Book Synopsis Strengthening of an Existing Continuous-span, Steel-beam, Concrete-deck Bridge by Post-tensioning by :

Download or read book Strengthening of an Existing Continuous-span, Steel-beam, Concrete-deck Bridge by Post-tensioning written by and published by . This book was released on 1990 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to upgrade a large number of understrength and obsolete bridges in the U.S. has been well documented in the literature. Through several Iowa DOT projects, the concept of strengthening simple-span bridges by post-tensioning has been developed. The purpose of the project described in this report was to investigate the use of post-tensioning for strengthening continuous composite bridges. In a previous, successfully completed investigation, the feasibility of strengthening continuous, composite bridges by post-tensioning was demonstrated on a laboratory 1/3-scale-model bridge (3 spans: 41 ft 11 in. x 8 ft 8 in.). This project can thus be considered the implementation phase. The bridge selected for strengthening was in Pocahontas County near Fonda, Iowa, on County Road N28. With finite element analysis, a post-tensioning system was developed that required post-tensioning of the positive moment regions of both the interior and exterior beams. During the summer of 1988, the strengthening system was installed along with instrumentation to determine the bridge's response and behavior. Before and after post-tensioning, the bridge was subjected to truck loading (1 or 2 trucks at various predetermined critical locations) to determine the effectiveness of the strengthening system. The bridge, with the strengthening system in place, was inspected approximately every three months to determine any changes in its appearance or behavior. In 1989, approximately one year after the initial strengthening, the bridge was retested to identify any changes in its behavior. Post-tensioning forces were removed to reveal any losses over the one-year period. Post-tensioning was reapplied to the bridge, and the bridge was tested using the same loading program used in 1988. Except for at a few locations, stresses were reduced in the bridge the desired amount. At a few locations flexural stresses in the steel beams are still above 18 ksi, the allowable inventory stress for A7 steel. Although maximum stresses are above the inventory stress by about 2 ksi, they are about 5 ksi below the allowable operating stress; therefore, the bridge no longer needs to be load-posted.

Cause and Control of Transverse Cracking in Concrete Bridge Decks

Author : M. Ala Saadeghvaziri
Publisher :
ISBN 13 :
Total Pages : 206 pages
Book Rating : 4.:/5 (1 download)

DOWNLOAD NOW!

Book Synopsis Cause and Control of Transverse Cracking in Concrete Bridge Decks by : M. Ala Saadeghvaziri

Download or read book Cause and Control of Transverse Cracking in Concrete Bridge Decks written by M. Ala Saadeghvaziri and published by . This book was released on 2002 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many concrete bridge decks develop transverse cracking and most of these cracks develop at early ages, some right after construction and some after the bridge has been opened to traffic for a period of time. Structural design factors have not been the subject of much research in the past and they were the main thrust of this research study. Using 2-D and 3-D linear and nonlinear finite element models many design factors such as girder stiffness, deck thickness, girder spacing, relative stiffness of deck to girder, amount of reinforcements, etc., were studied. The research study also included a comprehensive review of the existing literature as well as survey of 24 bridges in the state of New Jersey. Results of each research task are presented and discussed in detail. Furthermore, based on analytical results and literature review, the effect of various factors are quantified and specific recommendations for possible consideration in design are made.

Engineering for Structural Stability in Bridge Construction

Author : Federal Highway Federal Highway Administration
Publisher :
ISBN 13 :
Total Pages : 669 pages
Book Rating : 4.6/5 (675 download)

DOWNLOAD NOW!

Book Synopsis Engineering for Structural Stability in Bridge Construction by : Federal Highway Federal Highway Administration

Download or read book Engineering for Structural Stability in Bridge Construction written by Federal Highway Federal Highway Administration and published by . This book was released on 2020-07-19 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: This manual is intended to serve as a reference. It will provide technical information which will enable Manual users to perform the following activities:Describe typical erection practices for girder bridge superstructures and recognize critical construction stagesDiscuss typical practices for evaluating structural stability of girder bridge superstructures during early stages of erection and throughout bridge constructionExplain the basic concepts of stability and why it is important in bridge erection* Explain common techniques for performing advanced stability analysis along with their advantages and limitationsDescribe how differing construction sequences effect superstructure stabilityBe able to select appropriate loads, load combinations, and load factors for use in analyzing superstructure components during constructionBe able to analyze bridge members at various stages of erection* Develop erection plans that are safe and economical, and know what information is required and should be a part of those plansDescribe the differences between local, member and global (system) stability

Prestress Losses in Pretensioned High-strength Concrete Bridge Girders

Author : Maher K. Tadros
Publisher : Transportation Research Board
ISBN 13 : 030908766X
Total Pages : 73 pages
Book Rating : 4.3/5 (9 download)

DOWNLOAD NOW!

Book Synopsis Prestress Losses in Pretensioned High-strength Concrete Bridge Girders by : Maher K. Tadros

Download or read book Prestress Losses in Pretensioned High-strength Concrete Bridge Girders written by Maher K. Tadros and published by Transportation Research Board. This book was released on 2003 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The HCM includes three printed volumes (Volumes 1-3) that can be purchased from the Transportation Research Board in print and electronic formats. Volume 4 is a free online resource that supports the rest of the manual. It includes: Supplemental chapters 25-38, providing additional details of the methodologies described in the Volume 1-3 chapters, example problems, and other resources; A technical reference library providing access to a significant portion of the research supporting HCM methods; Two applications guides demonstrating how the HCM can be applied to planning-level analysis and a variety of traffic operations applications; Interpretations, updates, and errata for the HCM (as they are developed);A discussion forum allowing HCM users to ask questions and collaborate on HCM-related matters; and Notifications of chapter updates, active discussions, and more via an optional e-mail notification feature."--Publisher.

National Cooperative Highway Research Program Report

Author :
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.:/5 (1 download)

DOWNLOAD NOW!

Book Synopsis National Cooperative Highway Research Program Report by :

Download or read book National Cooperative Highway Research Program Report written by and published by . This book was released on 1964 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Transverse Cracking in Newly Constructed Bridge Decks

Author : Paul D. Krauss
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.3/5 (555 download)

DOWNLOAD NOW!

Book Synopsis Transverse Cracking in Newly Constructed Bridge Decks by : Paul D. Krauss

Download or read book Transverse Cracking in Newly Constructed Bridge Decks written by Paul D. Krauss and published by . This book was released on 1996 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Development of a Procedure to Determine Internal Stresses in Concrete Bridge Members

Author : Steven F. Hammerschmidt
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (747 download)

DOWNLOAD NOW!

Book Synopsis Development of a Procedure to Determine Internal Stresses in Concrete Bridge Members by : Steven F. Hammerschmidt

Download or read book Development of a Procedure to Determine Internal Stresses in Concrete Bridge Members written by Steven F. Hammerschmidt and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: With aging and deterioration of bridges, evaluation of existing conditions of their structural elements becomes vital to engineers and public officials when deciding how to repair or replace the structures. The ability to obtain necessary information on these conditions is often expensive and time consuming, especially for concrete bridges where the reinforcement is not available for inspection. Employing the surface-strain relief method could allow for accurate evaluation of aged or damaged prestressed members. The surface-strain relief method was developed to measure initial or pre-existing strains in a concrete member. It involves relieving the strain in the member and measuring the change in strain. Two methods were tested-one used a linear electrical-resistance strain gage and a three-inch-diameter diamond concrete core bit to cut around the gage, and the second method used a laser-speckle imaging device and a diamond cutting wheel to create notches perpendicular to the axis of maximum strain. Both methods measured the change in strain and related it to within 10 percent of the actual fse. The method of cutting notches and the laser-speckle imaging device provided a simpler method to be implemented in the field, while the coring method achieved a higher level of accuracy and precision.

Report

Author :
Publisher :
ISBN 13 :
Total Pages : 668 pages
Book Rating : 4.:/5 (89 download)

DOWNLOAD NOW!

Book Synopsis Report by :

Download or read book Report written by and published by . This book was released on 1990 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Steel Box Girder Bridges

Author :
Publisher : Thomas Telford Publishing
ISBN 13 :
Total Pages : 328 pages
Book Rating : 4.:/5 (89 download)

DOWNLOAD NOW!

Book Synopsis Steel Box Girder Bridges by :

Download or read book Steel Box Girder Bridges written by and published by Thomas Telford Publishing. This book was released on 1973 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Highway Research Abstracts

Author :
Publisher :
ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Highway Research Abstracts by :

Download or read book Highway Research Abstracts written by and published by . This book was released on 1993 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Computing Developments in Civil and Structural Engineering

Author : B. Kumar
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Computing Developments in Civil and Structural Engineering by : B. Kumar

Download or read book Computing Developments in Civil and Structural Engineering written by B. Kumar and published by . This book was released on 1999 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains a selection of papers presented at The Seventh International Conference on Civil and Structural Engineering and The Fifth International Conference on the Applications of Artificial Intelligence to Civil and Structural Engineering, held concurrently from 13-15 September 1999, at Oxford, England.

Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges

Author : Nigel Powers
Publisher : CRC Press
ISBN 13 : 1351745972
Total Pages : 550 pages
Book Rating : 4.3/5 (517 download)

DOWNLOAD NOW!

Book Synopsis Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges by : Nigel Powers

Download or read book Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges written by Nigel Powers and published by CRC Press. This book was released on 2018-07-04 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges contains lectures and papers presented at the Ninth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2018), held in Melbourne, Australia, 9-13 July 2018. This volume consists of a book of extended abstracts and a USB card containing the full papers of 393 contributions presented at IABMAS 2018, including the T.Y. Lin Lecture, 10 Keynote Lectures, and 382 technical papers from 40 countries. The contributions presented at IABMAS 2018 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of bridge maintenance, safety, risk, management and life-cycle performance. Major topics include: new design methods, bridge codes, heavy vehicle and load models, bridge management systems, prediction of future traffic models, service life prediction, residual service life, sustainability and life-cycle assessments, maintenance strategies, bridge diagnostics, health monitoring, non-destructive testing, field testing, safety and serviceability, assessment and evaluation, damage identification, deterioration modelling, repair and retrofitting strategies, bridge reliability, fatigue and corrosion, extreme loads, advanced experimental simulations, and advanced computer simulations, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of more rational decision-making on bridge maintenance, safety, risk, management and life-cycle performance of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including students, researchers and engineers from all areas of bridge engineering.

FRP Composites in Civil Engineering - CICE 2004

Author : R. Seracino
Publisher : CRC Press
ISBN 13 : 0203970853
Total Pages : 1005 pages
Book Rating : 4.2/5 (39 download)

DOWNLOAD NOW!

Book Synopsis FRP Composites in Civil Engineering - CICE 2004 by : R. Seracino

Download or read book FRP Composites in Civil Engineering - CICE 2004 written by R. Seracino and published by CRC Press. This book was released on 2004-12-15 with total page 1005 pages. Available in PDF, EPUB and Kindle. Book excerpt: The range of fibre-reinforced polymer (FRP) applications in new construction, and in the retrofitting of existing civil engineering infrastructure, is continuing to grow worldwide. Furthermore, this progress is being matched by advancing research into all aspects of analysis and design. The Second International Conference on FRP Composites in

Design of Precast, Prestressed Bridge Girders Made Continuous

Author : R. G. Oesterle
Publisher : Transportation Research Board National Research
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.3/5 (555 download)

DOWNLOAD NOW!

Book Synopsis Design of Precast, Prestressed Bridge Girders Made Continuous by : R. G. Oesterle

Download or read book Design of Precast, Prestressed Bridge Girders Made Continuous written by R. G. Oesterle and published by Transportation Research Board National Research. This book was released on 1989 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents and presents results of a study to determine time-dependent behavior and relevant design criteria for simple-span precast, prestressed bridge girders made continuous. A questionnaire was used to determine current practice. Creep and shrinkage tests of steam-cured concrete loaded at an early age were made. Computer simulations were used to investigate the effects of time-dependent material behavior and variation in design parameters on the effective continuity for live load plus impact. The findings suggest that positive moment connections in the diaphragms at the piers are not required and provide no structural advantages. The findings also suggest that effective continuity for live load plus impact can vary from 0 to 100% dependent on the design parameters and timing of construction. Computer analyses were also used to determine an upper limit for the amount of negative moment reinforcement over the supports to insure full moment redistribution and attainment of maximum bridge strength. New computer programs were developed for simplified analysis to determine time-dependent effects and service moments. Recommendations for design procedures were presented and design examples given.

Proceedings of the Second International Conference on Press-in Engineering 2021, Kochi, Japan

Author : Tatsunori Matsumoto
Publisher : CRC Press
ISBN 13 : 100045648X
Total Pages : 621 pages
Book Rating : 4.0/5 (4 download)

DOWNLOAD NOW!

Book Synopsis Proceedings of the Second International Conference on Press-in Engineering 2021, Kochi, Japan by : Tatsunori Matsumoto

Download or read book Proceedings of the Second International Conference on Press-in Engineering 2021, Kochi, Japan written by Tatsunori Matsumoto and published by CRC Press. This book was released on 2021-06-23 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Second International Conference on Press-in Engineering (ICPE) 2021 was organized by the International Press-in Association (IPA). The conference is held every three years and the main theme this time is "Evolution and Social Contribution of Press-in Engineering for Infrastructure Development, and Disaster Prevention and Mitigation". These proceedings contain 2 keynote lectures, 3 state-of-the-art lectures and about 60 papers from more than 10 countries. This publication provides good practice guidance on the application of the press-in piling method, to satisfy the requirements of geo-structures which are embedded utilizing prefabricated piles. It covers actual examples of the press-in piling method applied to various geo-structures, such as temporary and permanent retaining walls, cofferdams, cut-off walls, foundation piles etc. The content addresses the technical and construction issues relating to the selection of the appropriate type of press-in piling method, in accordance with required structural design criteria and soil and working conditions. The aim of this publication is to concisely describe practical uses of the press-in piling method for project owners, designers, contractors, academic researchers and other people in the construction industry.