Desain Sambungan Menggunakan Link Slab Untuk Jembatan Gelagar Beton Pratekan

Abstract

In Indonesia, bridges normally use a simply-supported system or a multisimple-span system with
expansion joint. Several problem occurred due to the use of expansion joints in bridge, ie
corrosion problem on girders and supports due to rainwater intrusion, users discomfort, high cost
maintenance, as well as reduction in bridge lifetime as well. In the design, the existing expansion
joints in the bridges were replaced by using continuous slab construction with link slab system.
Design of link slab use classic method by Caner and Zia 1998. The design was conducted on the
prestress bridges with length of span 2 x 50 m. The loadings adopted for the design referred to the
1725 2016 SNI standard and dimension of girder from WIKA Beton standard. From design were
found that length of link slab zone of 7,55 m and length of debonding zone of 5,05 m. The rotation
gained by 0,0058 caused by the truck load. The link slab used reinforcment stool bar D16-125 mm
for the main reinforcement and D12-300 mm for shrinkage-temperature reinforcement. It is
expected that link slab analysis can then use more variable beam types and span lengths.
Keyword: Prestress bridge, Link Slab, Expansion Joint