Metode Kerja Pemakaian Double Friction Pendulum pada Bangunan (Studi Kasus: Gedung InaTEWS BMKG Jakarta)

Abstract

BMKG, as one of the earthquake agencies in Indonesia, has built the Indonesia Tsunami Early Warning System (InaTEWS) Operational System Buildings in Jakarta and Bali. These buildings use earthquake horizontal force damping technology, employing two systems: the Double Friction Pendulum for the Jakarta building and the Lead Rubber Bearing for the Bali building. The Double Friction Pendulum is a new technology in Indonesia that can reduce lateral forces, so that the forces that occur are only 15% of the total maximum forces. The Double Friction Pendulum is produced by Freyssinet Italia SpA, with the patent holder in Indonesia being PT. Freyssinet Indonesia. Its use in the field follows structural planning analysis in accordance with SNI 1726:2019 regarding earthquake-resistant building design in Indonesia, and AASHTO LRFD as an international reference. The Double Friction
Pendulum used must undergo Prototype Testing and Production Testing before it is deemed suitable for use. In its implementation, the Double Friction Pendulum is installed once the upper floor structure of the building has been completed, requiring careful analysis and calculations in placing the Double Friction Pendulum on the building's foundation.