Download or read book Post tensioning the Inverted t Bridge System for Improved Durability and Increased Span to depth Ratio written by Rim Nayal and published by . This book was released on 2007 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Possibly the most pressing need in highway construction today is the repair or replacement of existing bridges. Due to increased needs and growing traffic, in addition to aging and extensive use, more than 2000 bridges in Kansas alone need to be replaced during the next decade. The majority of these bridges has spans of 100 ft or less, and has relatively shallow profiles. It is becoming increasingly important to implement a standard method for replacement in which the process is expedited and accomplished in cost-effective manner. Requirements for design and construction of concrete bridges have drastically changed during recent years. A main change in design is live-load requirements. Nebraska inverted-T bridge system has gained increasing popularity for its lower weight compared to I-girder bridges. However, there are some limiting issues when using IT system in replacing existing CIP bridges. Implementation of a post-tensioned IT system, which is the focus of this research, is believed to be one excellent solution for the IT deficiencies. Post-tensioning is added by placing a draped, post-tensioning duct in the stems of the IT members. Post-tensioning will lead to a higher span-to-depth ratio than IT system, and will reduce the potential transverse cracks in the (CIP) deck. Finally, the undesired cambers of pretensioned beams will be reduced, because fewer initial prestressing will be needed. This study was intended to explore the behavior of the PT-IT system, identify major parameters that control and limit the design of this system, and investigate different construction scenarios. This was achieved by conducting an extensive parametric study. For that purpose, PT-IT analysis program was developed and written using C++ programming language. The program was used to analyze various post-tensioning procedures for the post-tensioned inverted-T system. A Visual Basic friendly interface was provided to simplify the data input process. The findings of this research included recommendation of construction scenario for PT-IT system, as well as examining different methods for estimating time-dependent restraining moments. Effect of different concrete strengths on the behavior of PT-IT system was also determined. Most importantly, the effect of timing on different construction stages was also evaluated and determined.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Engineer written by and published by . This book was released on 1859 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Journal of Civil Engineering written by and published by . This book was released on 2003 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HRIS Abstracts written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1985 with total page 1254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Highway Engineer written by and published by . This book was released on 1968 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Railway Gazette written by and published by . This book was released on 1959-04 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Construction Handbook for Bridge Temporary Works written by American Association of State Highway and Transportation Officials and published by American Association of State Highway & Transportation Officials. This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Examples for the Design of Structural Concrete with Strut and tie Models written by American Concrete Institute. Convention and published by . This book was released on 2002 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Prepared by members of ACI Subcommittee 445-1, Strut and Tie Models, for sessions at the Fall Convention in Phoenix, October 27 to November 1, 2002, and sponsored by Joint ACI-ASCE Committee 445, Shear and Torsion and ACI Committee 318-E, Shear and Torsion."
Download or read book Post tensioning Manual written by Post-Tensioning Institute and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Railroad Gazette written by and published by . This book was released on 1891 with total page 970 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Prefabricated Bridge Elements and Systems to Limit Traffic Disruption During Construction written by Mohsen Shahawy and published by Transportation Research Board. This book was released on 2003 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis Report 324: Prefabricated Bridge Elements and Systems to Limit Traffic Disruption During Construction assesses and documents the use of innovative prefabricated elements and systems and assesses its effects on on-site construction time and cost, closure time, and environmental impacts. The synthesis report also looks at the use of fiber-reinforced polymers and other advanced materials and new technologies that are gaining in popularity but are still in the experimental stages.
Download or read book Bridge Aesthetics Around the World written by and published by Transportation Research Board. This book was released on 1991 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents the perspectives and insights of the world's present-day authorities on bridge aesthetics and design. Bridge engineers and architects representing 16 nations examine and highlight the aesthetic appearance of existing bridges with the goal of improving tomorrow's bridge design. Supplementing the individual papers is a comprehensive bibliography on bridge aesthetics, containing annotated references to more than 250 books, papers, and articles. There are 245 black-and-white photographs and numerous line drawings plus 24 pages of color plates. Author biographical information is provided and an index of bridges and locations is included. Individual entries into the TRIS data base have been made for the 22 papers and the bibliography.
Download or read book Herapath s Railway Magazine Commercial Journal and Scientific Review written by and published by . This book was released on 1865 with total page 1472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Engineering Handbook Fifth Edition written by Mustafa Mahamid and published by McGraw Hill Professional. This book was released on 2020-04-17 with total page 957 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. The industry-standard guide to structural engineering—fully updated for the latest advances and regulations For 50 years, this internationally renowned handbook has been the go-to reference for structural engineering specifications, codes, technologies, and procedures. Featuring contributions from a variety of experts, the book has been revised to align with the codes that govern structural design and materials, including IBC, ASCE 7, ASCE 37, ACI, AISC, AASHTO, NDS, and TMS. Concise, practical, and user-friendly, this one-of-a-kind resource contains real-world examples and detailed descriptions of today’s design methods. Structural Engineering Handbook, Fifth Edition, covers: • Computer applications in structural engineering • Earthquake engineering • Fatigue, brittle fracture, and lamellar tearing • Soil mechanics and foundations • Design of steel structural and composite members • Plastic design of steel frames • Design of cold-formed steel structural members • Design of aluminum structural members • Design of reinforced- and prestressed-concrete structural members • Masonry construction and timber structures • Arches and rigid frames • Bridges and girder boxes • Building design and considerations • Industrial and tall buildings • Thin-shell concrete structures • Special structures and nonbuilding structures
Download or read book Unified Theory of Concrete Structures written by Thomas T. C. Hsu and published by John Wiley & Sons. This book was released on 2010-03-16 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Unified Theory of Concrete Structures develops an integrated theory that encompasses the various stress states experienced by both RC & PC structures under the various loading conditions of bending, axial load, shear and torsion. Upon synthesis, the new rational theories replace the many empirical formulas currently in use for shear, torsion and membrane stress. The unified theory is divided into six model components: a) the struts-and-ties model, b) the equilibrium (plasticity) truss model, c) the Bernoulli compatibility truss model, d) the Mohr compatibility truss model, e) the softened truss model, and f) the softened membrane model. Hsu presents the six models as rational tools for the solution of the four basic types of stress, focusing on the significance of their intrinsic consistencies and their inter-relationships. Because of its inherent rationality, this unified theory of reinforced concrete can serve as the basis for the formulation of a universal and international design code. Includes an appendix and accompanying website hosting the authors’ finite element program SCS along with instructions and examples Offers comprehensive coverage of content ranging from fundamentals of flexure, shear and torsion all the way to non-linear finite element analysis and design of wall-type structures under earthquake loading. Authored by world-leading experts on torsion and shear
