Seismic Isolation of Greater Jakarta LRT
2018; Volume: 112; Linguagem: Inglês
10.2749/nantes.2018.s4-25
ISSN2221-3783
AutoresCharles Cynober, Tri Suryadi, M. Sartori,
Tópico(s)Geotechnical and construction materials studies
Resumo<p>The Greater Jakarta Light Rail Transit phase 1, is a network of 3 elevated lines that will totalize 43 km and include 18 stations. The contractor PT Adhi Karya, was appointed in 2015 by Indonesian government to build the project in a very tight schedule.</p><p>The project is challenging because Jakarta is in a high seismic zone, soil conditions are bad, and operability must be maintained after an earthquake.</p><p>In order to meet the tight schedule and reduce construction costs, Adhi Karya selected the U shaped viaduct solution developed by Systra and the seismic base isolation with Lead Rubber Bearings (LRB) developed by Freyssinet.</p><p>To reduce earthquake loads, a breakthrough isolation system has been introduced: LRB were designed to restrain bridge displacement in service condition, and dissipate energy during earthquake to efficiently reduce piers and piles dimensions. These LRBs will be provided by Freyssinet.</p><p>On the Greater Jakarta LRT, the base isolation with LRBs lead to lower the concrete and reinforcement quantities for substructures, eventually saving 20 % on the total project’s cost. The other benefit of using LRBs is that it will drastically reduce repair works in case of seismic occurrence.</p>
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