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http://dx.doi.org/10.11112/jksmi.2006.10.5.187

Static Strength of Cramp Joint at Precast Highway Deck Slabs  

Kim, Yoon-Chil (경주대학교 건축공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.10, no.5, 2006 , pp. 187-193 More about this Journal
Abstract
A new jointing method using steel cramps with a unique configuration was developed for the field joint of precast deck slabs of highway bridges. In this jointing method, the looped distribution bars are connected by the cramps to the main reinforcements. Therefore, the joint can transfer the bending moment and shearing force through the interlocking effect caused by the cramps, and it is both excellent in installation on-site and economical compared with the loop joint currently in use. In order to confirm the bending and shear capacities and to clarify the failure mechanism of the joint, a series of static loading tests were carried out. From the results of these experimental studies, it was clarified that the cramp joint has enough load carrying capacity being equivalent to the loop joint.
Keywords
Precast slabs; Field joint; Static strength; Cramp joint;
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