Design of seamless pavement on Westlink M7, Sydney, Australia
In contemporary practice continuously reinforced concrete pavements (CRCP) are terminated and anchored at each bridge approach. An approach slab, jointed at each end, provides the CRCP to bridge abutment link. This transition is not always smooth as the provision of transverse joints can lead to discontinuities in the carriageway profile, particularly if the approach embankment settles. The seamless pavement is an enhancement that eliminates transverse joints and provides a reinforced concrete connection between the CRCP and the bridge deck. This results in improved ride quality for highway users and reduced maintenance costs. Additionally, it eliminates the need for pavement anchors behind each abutment, thereby reducing the pavement cost and minimizing construction activities in an area that is generally on the critical path. The seamless connection between CRCP and bridge deck must accommodate the stresses induced by shrinkage, creep, thermal strain, embankment settlement and traffic loads. Numerical models developed to analyse these parameters compare well with the results of post construction monitoring. This correlation has confirmed the validity of initial design assumptions and has, through further development, resulted in a simplified construction method for the closure pour. (a) For the covering entry of this conference, please see ITRD abstract no. E214936.
- Record URL:
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Authors:
- GRIFFITHS
- BOWMAKER
- BRIDGE
- Publication Date: 2006
Language
- English
Media Info
- Pagination: 16P
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Serial:
- AUSTROADS BRIDGE CONFERENCE, 6TH, 2006, PERTH, WESTERN AUSTRALIA
- Publisher: AUSTROADS
Subject/Index Terms
- TRT Terms: Abutments; Bridge decks; Bridges; Conferences; Design; Pavements; Rigid pavements; Stresses; Vehicles
- ITRD Terms: 3424: Abutment; 3455: Bridge; 3482: Bridge deck; 8525: Conference; 9011: Design (overall design); 2955: Pavement; 2964: Rigid pavement; 5575: Stress (in material); 1255: Vehicle
- Subject Areas: Bridges and other structures; Design; Highways; Pavements; Vehicles and Equipment; I24: Design of Bridges and Retaining Walls;
Filing Info
- Accession Number: 01054984
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, ATRI
- Created Date: Aug 6 2007 2:12PM