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Structural Behavior Of A Prestressed Concrete I Beam Bridge
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Book Synopsis Structural Behavior of a Prestressed Concrete I-beam Bridge by : David A. VanHorn
Download or read book Structural Behavior of a Prestressed Concrete I-beam Bridge written by David A. VanHorn and published by . This book was released on 1971 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the field testing of an in-service prestressed concrete I-beam/slab bridge superstructure with stay-in-place corrugated steel sheet deck forms. The simple-span bride was loaded with a single test vehicle which closely simulated the HS 20-44 design vehicle. The vehicle was driven in nine specified test lanes which extended laterally across the entire roadway width. Runs were conducted at crawl speed to simulate the static load condition, at speeds ranging from 5 to 60 mph to produce the effect of a moving vehicle, and at 10 mph with a 2 inch ramp to simulate a severe impact condition. At a cross-section near midspan longitudinal strains were measured at seven locations on the surfaces of the six longitudinal beams, and at six locations on the curb section located on one edge of the slab. Vertical deflections of the six beams were also measured at the same cross-section location. Two series of test runs were conducted, the first with midspan diaphragms in place, the second with the midspan diaphragms removed. The results from the field testing revealed that the load distributed: (1) to the interior beams was less than the design value, (2) to the exterior beam under the curb section was greater than the design value, and (3) to the exterior beam having no curb section was either greater or less than the design value, depending on the definition of the design load lanes. In addition, it was found that the midspan diaphragms only slightly influenced the experimentally-based distribution factors, produced by multi-lane loading to produce maximum effects. however, for a single vehicle load, the diaphragms did serve to distribute the load somewhat more evenly. Additional information is provided on (1) the amplification of static response, resulting from the speed and impact runs of the test vehicle, and (2) deflections of the beams. Implications from the field tests are discussed, several aspects of design philosophy are suggested for reconsideration, and specific need for future research are set forth.
Book Synopsis Structural Behavior of a Prestressed Concrete Box-beam Bridge - Hazleton Bridge by : Yan-liang Chen
Download or read book Structural Behavior of a Prestressed Concrete Box-beam Bridge - Hazleton Bridge written by Yan-liang Chen and published by . This book was released on 1970 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Behavior Characteristics of Prestressed Concrete Box-beam Bridges by : David A. VanHorn
Download or read book Structural Behavior Characteristics of Prestressed Concrete Box-beam Bridges written by David A. VanHorn and published by . This book was released on 1969 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long-term Behavior of a Prestressed I-girder Highway Bridge in Champaign County, Illinois by : William Leo Gamble
Download or read book Long-term Behavior of a Prestressed I-girder Highway Bridge in Champaign County, Illinois written by William Leo Gamble and published by . This book was released on 1979 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prestressed Concrete by : Charles W. Dolan
Download or read book Prestressed Concrete written by Charles W. Dolan and published by Springer. This book was released on 2018-11-14 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook imparts a firm understanding of the behavior of prestressed concrete and how it relates to design based on the 2014 ACI Building Code. It presents the fundamental behavior of prestressed concrete and then adapts this to the design of structures. The book focuses on prestressed concrete members including slabs, beams, and axially loaded members and provides computational examples to support current design practice along with practical information related to details and construction with prestressed concrete. It illustrates concepts and calculations with Mathcad and EXCEL worksheets. Written with both lucid instructional presentation as well as comprehensive, rigorous detail, the book is ideal for both students in graduate-level courses as well as practicing engineers.
Book Synopsis Field Investigation of Prestressed Reinforced Concrete Highway Bridges by : William Leo Gamble
Download or read book Field Investigation of Prestressed Reinforced Concrete Highway Bridges written by William Leo Gamble and published by . This book was released on 1980 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Work accomplished over the 14.5 year life of this project is summarized, and the reports published as part of the study are referenced. Implementation of the results of the study has already been accomplished in two areas. The current loss-of-prestress provisions in the AASHTO Bridge Specification are based on recommendations prepared as part of the work of this project. Illinois DOT has stopped using span diaphragms in prestressed concrete highway bridges as a result of recommendations based on another phase of the study. The work be divided into three relatively separate phases. The first phase was the installation of deformation measuring instrumentation in three in-service bridges, the gathering of data, and the development of analysis procedures that enabled the data to be interpreted. The second phase involved the construction of relatively small scale prestressed bridge components, and their use to provide data to help confirm some information developed in the field study. The models were later tested to failure, and additional information about overload behavior was gained. The third phase was a study of the effects of span diaphragms on moment distributions in bridges, and it was concluded that these members were cost-ineffective and that their use should be discontinued.
Book Synopsis Structural Behavior of a Modular, Two-way Prestressed Concrete Bridge Deck by : Jinrong Wang
Download or read book Structural Behavior of a Modular, Two-way Prestressed Concrete Bridge Deck written by Jinrong Wang and published by . This book was released on 1990 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis FULL-RANGE BEHAVIOUR OF PRESTR by : Xiachun Chen
Download or read book FULL-RANGE BEHAVIOUR OF PRESTR written by Xiachun Chen and published by Open Dissertation Press. This book was released on 2017-01-26 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Full-range Behaviour of Prestressed Concrete Bridges With Corrugated Steel Webs" by Xiachun, Chen, 陳夏春, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Bridge engineers and researchers have been looking for efficient structural forms under the performance-based concept to satisfy various attributes, including serviceability, safety, economy, constructability, durability, etc. Prestressed concrete bridges with corrugated steel webs have emerged as one of the promising bridge forms due to their remarkable advantages such as efficient prestressing of concrete, high buckling strength of steel webs and lightness. In 1986, the first bridge of this type, Cognac Bridge, was built in France. Its successful application and significant advantages over conventional prestressed concrete bridges have prompted researchers and construction companies in various countries to get involved in this new form of composite structure. However, the full-range behaviour of the bridges covering both the service and failure stages is rather complicated, and has not been systematically studied. In view of the different behaviour of components and the large shear deformation of corrugated steel webs with negligible axial stiffness, the assumption that plane sections remain plane is no longer valid and therefore the classical Euler-Bernoulli and Timoshenko beam models may not be applicable. To study the structural behaviour of prestressed concrete bridges with corrugated steel webs, numerical and experimental investigations were carried out. A sandwich beam theory was developed to investigate both the static and dynamic behaviour numerically. In addition, a modified Timoshenko beam model was developed for linearly elastic analysis of static service behaviour, which provides a convenient alternative for design purpose. In the development of numerical models, special emphasis was placed on the modelling of corrugated steel webs, external prestressing tendons, diaphragms, and interaction between web shear deformation and local flange bending. The numerical models were verified by tests. Using the numerical models proposed, the static service behaviour, dynamic properties and long-term behaviour were studied. Some parametric studies were carried out to further explore their structural behaviour. The sectional ductility, deformability and strength were evaluated by nonlinear analysis taking into account the actual stress-strain curves and path-dependence of materials. The numerical results obtained were compared with experimental results for verification. A parametric study was then undertaken to clarify the effects of various parameters. In the design of this type of bridges, both the ultimate load and ductility should be examined, which requires the estimation of full-range structural behaviour. The sandwich beam model was extended for analysis of the full-range behaviour considering geometric and material nonlinearities. With a nonlinear kinematical theory, complete description of the nonlinear interaction between the external tendons and the bridge was obtained. The numerical model proposed was also verified by experiments. The failure mechanisms were studied experimentally and numerically for more accurate evaluation of safety-related attributes such as ultimate load, ductility and deformability. The formation of plastic hinge and its size were also studied thoroughly in view of their importance in the prediction of full-range behaviour. A simplified method to predict the full-range behaviour was also proposed based on the concept o
Book Synopsis Overload and Ultimate Behavior of a Prestressed Concrete Multi-beam Bridge by : Everett Pierce Loppacker Jr
Download or read book Overload and Ultimate Behavior of a Prestressed Concrete Multi-beam Bridge written by Everett Pierce Loppacker Jr and published by . This book was released on 1961 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Analytical Investigation of Prestressed Beam Bridge Performance Before and After Widening by : Chris A. O'Riordan-Adjah
Download or read book An Analytical Investigation of Prestressed Beam Bridge Performance Before and After Widening written by Chris A. O'Riordan-Adjah and published by . This book was released on 2017 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of this dissertation is to present a better understanding of structural behavior and capacity by studying an existing widened structure: a bridge that has been in service for over 40 years (constructed in 1972 and widened in 2002). The load demand on this bridge has doubled over the years. Consequently, the widened structural system is composed of four-span continuous prestressed concrete bridge segments.
Book Synopsis Analysis and Design of Bridges by : C. Yilmaz
Download or read book Analysis and Design of Bridges written by C. Yilmaz and published by Springer. This book was released on 1984-01-31 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the NATO Advanced Study Institute on Analysis and Design of Bridges held at ~e§me, lzmir, Turkey from 28 June 1982 to 9 July 1982 are contained in the present volume. The Advanced Study Institute was attended by 37 lecturers and participants from 10 different countries. The Organizing Committee consisted of Professors P. Gtilkan, A. C. Scordelis, S. T. Wasti and 9. Yl. lmaz. The guidelines set by NATO for the Advanced Study Institute require it to serve not only as an efficient forum for the dissemination of available advanced knowledge to a selected group of qualified people but also as a platform for the exploration of future research possibilities in the scientific or engineering areas concerned. The main topics covered by the present Advanced Study Institute were the mathematical modelling of bridges for better analysis and the scientific assessment of bridge behaviour for the introduction of improved design procedures. It has been our observation that as a result of the range and depth of the lectures presented and the many informal discussions that took place, ideas became fissile, the stimulus never flagged and many gaps in the engineering knowledge of the participants were "bridged". Here we particularly wish to mention that valuable informal presenta tions of research work were made during the course of the Institute by Drs. Friedrich, Karaesmen, Lamas and Parker.
Book Synopsis Redistribution of Stresses in Segmentally Erected Prestressed Concrete Bridges by : M. A. Ketchum
Download or read book Redistribution of Stresses in Segmentally Erected Prestressed Concrete Bridges written by M. A. Ketchum and published by . This book was released on 1986 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Flexural Behavior of a Prestressed Concrete Bridge Beam ... by : David A. Van Horn
Download or read book Flexural Behavior of a Prestressed Concrete Bridge Beam ... written by David A. Van Horn and published by . This book was released on 1956 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Behavior of a Skewed, Prestressed Concrete, Railroad Trough Structure by : Raymond Earl Davis
Download or read book Structural Behavior of a Skewed, Prestressed Concrete, Railroad Trough Structure written by Raymond Earl Davis and published by . This book was released on 1984 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Behavior of Concrete Girders Prestressed with Stainless Steel Strands by : Anwer Al-Kaimakchi
Download or read book Structural Behavior of Concrete Girders Prestressed with Stainless Steel Strands written by Anwer Al-Kaimakchi and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prestressed concrete is used in structures because of its versatility, adaptability, and durability. Durability of prestressed concrete bridges in extremely aggressive environments is of increasing concern because of corrosion of the carbon steel strands that are typically used for prestressing. Concrete is a permeable material where chloride ions can penetrate through and reach the internal reinforcement and carbon steel strands are highly susceptible to corrosion. Thus, prestressed concrete bridges located in areas with high exposure to environmental factors (e.g., marine environments) deteriorate due to corrosion of carbon steel strands. For example, Florida has a long coastline, with many concrete bridges over coastal water. Among the 12,518 bridges in Florida, 6,303 are prestressed concrete, and almost half of them are older than 40 years. One solution to overcome the early deterioration of coastal bridges is to use corrosion-resistant strands, such as Duplex High-Strength Stainless Steel (HSSS) strands.HSSS strands have high corrosion resistance and are an alternative to carbon steel strands in concrete bridges in extremely aggressive environments. The growing interest in using stainless steel strands has led to the development of the ASTM A1114. In 2020, ASTM A1114 was released as a standard specification for low-relaxation, seven-wire, Grade 240, stainless steel strands for prestressed concrete. Stainless steel is made from different alloys compared to carbon steel, and thus the mechanical properties of stainless steel strands are fundamentally different than those of carbon steel strands. The most significant difference is in the guaranteed ultimate strain: the value for stainless steel strands is only 1.4%. Several departments of transportation (DOTs) have already used or allowed the use of HSSS strands in prestressed piles. As of 2020, a total of 17 projects have used stainless steel strands, a majority of them in piles. Those projects are in areas with high exposure to environmental factors. The use of HSSS strands in flexural members has been hindered by the lack of full-scale test results, structural design approaches, and/or design guidelines. The main concern in using HSSS strands in flexural members is their low ductility. Concrete members prestressed with HSSS strands, if not properly designed, might fail suddenly without adequate warning. There have been no attempts to address this problem in full-scale research studies. The goals of this research project were to investigate the use of HSSS strands in flexural members and to develop design guidelines that could be used by bridge engineers. A total of thirteen (13) 42-ft-long AASHTO Type II girders were designed, fabricated, and tested in flexure or shear. Ten (10) girders were prestressed with HSSS strands, while the other three (3) were prestressed with carbon steel strands and served as control girders. This research program included experimental activities to determine the mechanical and bond strength characteristics, prestress losses, and transfer length of 0.6-in-diameter HSSS strands. Twenty HSSS strands from two spools were tested in direct tension. A stress-strain equation is proposed for the 0.6-in.-diameter HSSS strands, which satisfied all ASTM A1114 requirements. The minimum and average bond strengths, following ASTM A1081, of six 0.6-in.-diameter HSSS strands were 15.8 kips and 17.9 kips, respectively. The minimum and average experimental ASTM A1081 bond strengths were 23.4% and 19.8% greater than the recommended values by PCI Strand Bond Task Group. The maximum measured transfer length of 0.6-in.-diameter HSSS strands was 21.5 inches, which was less than the value predicted by AASHTO LRFD Bridge Design Specifications' equation for carbon steel strands. Experimental flexural and shear results showed that the post-cracking behavior of girders prestressed with HSSS strands continued to increase up to failure with no discernible plateau. The behavior is attributed to the stress-strain behavior of the HSSS strands. Also, flexural results revealed that, although HSSS strands have low ductility and all composite girders failed due to rupture of strands, the girders exhibited large reserve deflection and strength beyond the cracking load and provided significant and substantial warning through large deflection, as well as well-distributed and extensive flexural cracking, before failure. A non-linear analytical model and an iterative numerical model were developed to predict the flexural behavior of concrete members prestressed with HSSS strands. Although the analytical model gave better predictions, the iterative numerical approach is slightly conservative and is easier to use for design - designers prefer to use an equation type of approach to perform preliminary designs. Numerical equations were developed to calculate the nominal flexural resistance for flexural members prestressed with HSSS strands. The proposed equations are only valid for rectangular sections. In the case of flanged sections, iterative numerical approaches were also introduced. Because HSSS strand is a brittle material, the design must consider the strain capacity of the strand and must be balanced between flexural strength and ductility. Based on the flexural design philosophy for using carbon steel strands in prestressed concrete girders, along with experimentally-observed behaviors and analytical results for concrete members prestressed with HSSS strands, flexural design guidelines were developed for the use of HSSS strands in flexural members. For I-girders, rupture of strands failure mode is recommended by assuring that concrete in the extreme compression fiber reaches considerable inelastic stresses, at least 0.7f_c^'. For slab beams (e.g. Florida Slab Beam), crushing of concrete failure mode is recommended by assuring that the net tensile strain in the HSSS strand is greater than 0.005. The recommended maximum allowable jacking stress and stress immediately prior to transfer are 75% and 70%, respectively. A resistance factor of 0.75 is recommended for both rupture of strand and crushing of concrete failure modes. AASHTO equations conservatively estimated the measured transfer length and prestress losses of 0.6-inches-diameter HSSS strands. The ACI 318-19 and AASHTO LRFD conservatively predicted the shear capacity of concrete girders prestressed with HSSS strands.
Book Synopsis Slab Behavior of a Prestressed Concrete Box-beam Bridge, Bartonsville Bridge by : Anton W. Wegmuller
Download or read book Slab Behavior of a Prestressed Concrete Box-beam Bridge, Bartonsville Bridge written by Anton W. Wegmuller and published by . This book was released on 1971 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strength and Behavior of Two-span Continuous Prestressed Concrete Beams by : Neil Middleton Hawkins
Download or read book Strength and Behavior of Two-span Continuous Prestressed Concrete Beams written by Neil Middleton Hawkins and published by . This book was released on 1961 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt:
