Download or read book Load Distribution and Connection Design for Precast Stemmed Multibeam Bridge Superstructures written by John Francis Stanton and published by Transportation Research Board National Research. This book was released on 1986 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Load Distribution and Connection Design for Precast Stemmed Multibeam Bridge Superstructures written by John Francis Stanton and published by Transportation Research Board National Research. This book was released on 1986 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Lane Live Load Distribution Factor for Decked Precast prestressed Concrete Girder Bridges written by John Zhongguo and published by . This book was released on 2005 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The live load distribution factor (DF) equations provided by AASHTO-LRFD for the decked precast/prestressed concrete (DPPC) girder bridge system do not differentiate between a single or multilane loaded condition. This practice results in a single lane load rating penalty for DPPC girder bridges. The objective of this project is to determine DF equations which accurately predict the distribution factor of the DPPC girder bridge system when it is only subjected to single lane loading. Eight DPPC girder bridges were instrumented. Each bridge was loaded with a single load vehicle to simulate the single lane loaded condition. The experimental data was used to calibrate 3D FE models and 2D grillage models of the DPPC girder bridge system. The calibrated models were used to conduct a parametric study of the DPPC girder bridge system subjected to a single lane loaded condition. Two sets of new equations that describe the single lane loaded distribution factor for both shear and moment forces of these bridges are proposed and compared with AASHTOLRFD DF equations.
Download or read book Structural Condition Assessment and Service Load Performance of Deteriorated Pretensioned Deck Beam Bridges written by Neil Middleton Hawkins and published by . This book was released on 2003 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PCI Journal written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summary of Progress National Cooperative Highway Research Program written by National Cooperative Highway Research Program and published by . This book was released on 1996 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Improved Shear Key Designs for Multi beam Box Girder Bridges written by and published by . This book was released on 1997 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory tests were conducted to investigate the problem of shear key failure in multi-beam prestressed box girder bridges and to propose a new shear key design. Failure of shear keys will typically not only compromise the load-sharing mechanism between adjacent girders, but also may lead to the failure of the deck waterproofing system, with attendant corrosion problems. The tests consisted of monitoring relative displacements occurring across intergirder joints, produced by a simulated concentrated wheel load.
Download or read book Full depth Shear key Performance in Adjacent Prestressed beam Bridges written by Jyotirmay Lall and published by . This book was released on 1997 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge decks supported by adjacent precast/prestressed-concrete beams have become increasingly popular in recent years due to their ease of construction, shallow superstructure, and aesthetic appeal. In New York, such structures are built by placing a number of precast beams alongside one another and connecting them through grouted keyways called "shear keys". After the grout hardens, the beams are transversely post-tensioned and a composite, cast-in-place deck is poured over them. Before 1992, field inspection personnel frequently reported the appearance of longitudinal deck cracking over these partial-depth shear keys soon after construction. In response, a new system using full-depth shear keys with more transverse tendons was adopted in 1992. Since then, more than 100 such bridges have been built statewide. To evaluate their performance, a followup inspection survey was conducted in 1996 on 91 such bridges.
Download or read book State of the art Report on Precast Concrete Systems for Rapid Construction of Bridges written by and published by . This book was released on 2005 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications Transportation Research Board written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1996 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ACI Manual of Concrete Practice written by American Concrete Institute and published by . This book was released on 2005 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Progress Report written by National Cooperative Highway Research Program and published by . This book was released on 2002 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Civil Engineering Studies written by and published by . This book was released on 2003-05 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book HRIS Abstracts written by National Research Council (U.S.). Highway Research Information Service and published by . This book was released on 1987 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications Catalog written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 1997 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Results Digest written by and published by . This book was released on 1990 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
