USER Manual for Calculating the Lateral Stability of Precast, Prestressed Concrete Bridge Girders
USER Manual for Calculating the Lateral Stability of Precast, Prestressed Concrete Bridge Girders

Author: Precast

Publisher:

Published: 2020-05-30

Total Pages: 216

ISBN-13: 9781733548878

DOWNLOAD EBOOK

USER Manual for Calculating the Lateral Stability of Precast, Prestressed Concrete Bridge Girders, CB-04-20, provides context and instructions for the use of the 2019 version of the Microsoft Excel workbook to analyze lateral stability of precast, prestressed concrete bridge products. The free distribution of this publication includes a simple method to record contact information for the persons who receive the workbook program so that they can be notified of updates or revisions when necessary. There is no cost for downloading the program. This product works directly with the PCI document entitled Recommended Practice for Lateral Stability of Precast, Prestressed Concrete Bridge Girders, PCI publication CB-02-16, which is referenced in the AASHTO LRFD Bridge Design Specification. To promote broader use of the example template, PCI developed a concatenated Microsoft Excel spreadsheet program where users may customize inputs for a specific component design according to regional girder products.

Evaluation and Repair Procedures for Precast/prestressed Concrete Girders with Longitudinal Cracking in the Web
Evaluation and Repair Procedures for Precast/prestressed Concrete Girders with Longitudinal Cracking in the Web

Author: Maher K. Tadros

Publisher: Transportation Research Board

Published: 2010

Total Pages: 76

ISBN-13: 0309118352

DOWNLOAD EBOOK

This report establishes a user's manual for the acceptance, repair, or rejection of precast/prestressed concrete girders with longitudinal web cracking. The report also proposes revisions to the AASHTO LRFD Bridge Design Specifications and provides recommendations to develop improved crack control reinforcement details for use in new girders. The material in this report will be of immediate interest to bridge engineers.

Prestress Losses in Pretensioned High-strength Concrete Bridge Girders
Prestress Losses in Pretensioned High-strength Concrete Bridge Girders

Author: Maher K. Tadros

Publisher: Transportation Research Board

Published: 2003

Total Pages: 73

ISBN-13: 030908766X

DOWNLOAD EBOOK

"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.

Stability of Precast Prestressed Concrete Bridge Girders Considering Imperfections and Thermal Effects
Stability of Precast Prestressed Concrete Bridge Girders Considering Imperfections and Thermal Effects

Author: Jonathan B. Hurff

Publisher:

Published: 2010

Total Pages:

ISBN-13:

DOWNLOAD EBOOK

The spans of precast prestressed concrete bridge girders have become longer to provide more economical and safer transportation structures. As the spans have increased, so has the depth of the girders which in turn have increased the slenderness of the girders. Slenderness in a beam or girder would increase the likelihood that a stability failure would occur. Stability failures could pose a danger to construction personnel due to the sudden nature in which a stability failure would occur. Furthermore, stability failures of prestressed concrete girders during construction would cause a detrimental economic impact due to the costs associated with the failure of the girder, the ensuing construction delays, damage to construction equipment and potential closures to highways over which the bridge was being constructed.

Design of Precast, Prestressed Bridge Girders Made Continuous
Design of Precast, Prestressed Bridge Girders Made Continuous

Author: R. G. Oesterle

Publisher: Transportation Research Board National Research

Published: 1989

Total Pages: 108

ISBN-13:

DOWNLOAD EBOOK

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.

Safety Level of Precast Prestressed Concrete Bridge Girders
Safety Level of Precast Prestressed Concrete Bridge Girders

Author: OKTAY ARGINHAN

Publisher: LAP Lambert Academic Publishing

Published: 2011-04

Total Pages: 136

ISBN-13: 9783844331783

DOWNLOAD EBOOK

The main aim of the book is to evaluate the safety level of Turkish type precast prestressed concrete bridge girders designed according to AASHTO LRFD based on reliability theory. Two types of design truck loading models are taken into account: H30S24-current design live load of Turkey and HL93-design live load model of AASHTO LRFD. The statistical parameters of both load and resistance components are estimated from local data and published data in the literature. The girders are designed according to the requirements of both Service III and Strength I limit states. The reliability indexes are calculated by different methods for both Strength I and Service III limit states. The reliability level of typical girders of Turkey is compared with those of others countries. Different load and resistance factors are intended to achieve the selected target reliability levels. For the studied cases, a set of load factors corresponding to different levels of reliability index are suggested for the two models of truck design loads.