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Title:

Three Dimensional Finite Element Model for Analysis of Transverse Cracking in Continuously Reinforced Concrete Pavement

Accession Number:

01475492

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

In this study, a three dimensional finite element model was developed to investigate crack development and mechanical responses of steel bar and concrete slab of continuously reinforced concrete pavement. An incremental method was adopted to take into account variations of free contraction strains and material properties of concrete in the early stage after casting. A model of mechanical interaction between steel and concrete was developed and values of the parameters were identified by comparing calculated and measured responses. Effects of crack spacing, base course stiffness and depth of steel bar on steel bar and concrete slab stresses and crack width were examined. It was found that strong bonding between steel and concrete leads to higher stresses in steel bar and concrete slab. Short crack spacing reduces tensile stresses in steel bar and concrete slab and crack width. Small peak in tensile stress on the top of slab near crack appears when stiffness of base course is low. The peak of tensile stress might cause “secondary” crack near “primary” crack. Deeper steel bar position leads to wider crack width at the top of slab. Embedding steel bars at a third depth of slab thickness is a reasonable practice to keep crack width tight on the slab surface and prevent water penetration.

Supplemental Notes:

This paper was sponsored by TRB committee AFD50 Rigid Pavement Design.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-3684

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Nishizawa, Tatsuo
Motomatsu, Shiro
Fumoto, Takaykui
Taketsu, Hitomi

Pagination:

16p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Subject Areas:

Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-3684

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:43PM