01514984

Component

The rebar detail used in the closure region between adjacent slabs has been investigated in the past. This paper proposes a hooked rebar detail as a cost effective alternative to the previously recommended headed rebar detail. The proposed hooked rebar detail looks to improve upon the headed bar detail by increasing the clear cover, and reducing the cost of fabrication and shipment of the rebar. Six specimens containing closure regions are subjected to both positive and negative moment loading in order to investigate their behavior and failure modes under ultimate load. Test results have shown that the longitudinal connection detailed with hooked bar provide adequate flexural capacity and ductility ratio. In addition, similar cracking pattern was observed in the specimens detailed with hooked bar or headed bars. It has been concluded that the performance of hooked bar details, which are easy and cheap to construct, is practically the same as the headed bar details in longitudinal joint of modular bridge deck system.

This paper was sponsored by TRB committee AFF30 Concrete Bridges.

01503729

14-1211

English

2014

Transportation Research Board 93rd Annual Meeting

Digital/other

Figures; Photos; References; Tables

Bearing capacity; Bridge decks; Cost effectiveness; Cracking; Longitudinal joints; Prefabricated bridges; Reinforcing bars

Bridges and other structures; Construction; Highways; I53: Construction of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2014 Paper #14-1211

TRIS, TRB, ATRI

Jan 27 2014 2:28PM