A New Precast Concrete Deck System for Accelerated Bridge Construction

George Morcous, Fouad Jaber, Jason Volz

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Full-depth precast concrete deck systems have several advantages over cast-in-place (CIP) concrete decks in bridge construction, such as improved construction quality, reduced construction time and impact on traveling public, possible weight reduction, and lower life-cycle cost. This paper presents the development of a new full-depth precast concrete deck system for accelerated bridge construction. The new system overcomes the drawbacks of existing systems, such as the large number of panels, joints, and openings; complexity of panel production and erection; need for an overlay; and difficulty of post-tensioning and grouting operations. The developed deck system consists of full-width precast concrete deck panels that are 12 ft (3.6 m) long to minimize the number of panels and joints. Panels have covered pockets at 4 ft (1.2 m) spacing in each girder line for shear connectors. These pockets were designed to minimize deck surface penetrations and eliminates the need for a deck overlay. Deck panels are prestressed in both directions: pre-tensioned in the transverse direction and post-tensioned in the longitudinal direction using a new approach that eliminates duct installation and grouting operations. These unique features enhance deck durability and improve its economic competitive with CIP concrete decks. The paper also presents the construction sequence and a case study for the implementation of the new system.

Original languageEnglish (US)
Title of host publicationFacing the Challenges in Structural Engineering - Proceedings of the 1st GeoMEast International Congress and Exhibition, Egypt 2017 on Sustainable Civil Infrastructures
EditorsHugo Rodrigues, Amr Elnashai, Gian Michele Calvi
PublisherSpringer Science and Business Media B.V.
Pages229-241
Number of pages13
ISBN (Print)9783319619132
DOIs
StatePublished - 2018
Event1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017 - Sharm El Sheikh, Egypt
Duration: Jul 15 2017Jul 19 2017

Publication series

NameSustainable Civil Infrastructures
ISSN (Print)2366-3405
ISSN (Electronic)2366-3413

Conference

Conference1st GeoMEast International Congress and Exhibition on Sustainable Civil Infrastructures, Egypt 2017
CountryEgypt
CitySharm El Sheikh
Period7/15/177/19/17

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Computational Mechanics
  • Geotechnical Engineering and Engineering Geology
  • Environmental Engineering

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