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STATIC AND SEISMIC DESIGN APPROACH FOR UNDERGROUND STATION STRUCTURE FOR THE CASE OF JAKARTA MRT (2016)
The first Metro Project in Indonesia has commenced finally and half of the packages are underground structure. The civil packages have been achieving some significant progress in construction where the majority of underground stations are under construction now together with the progress of tunnel. The station structure is designed and constructed with Diaphragm Wall (D-wall) system, while tunnel is the segmental lining to connect each station.
In this occasion, the authors would like to present the design approach of underground station structure that has been applied for Jakarta MRT by considering static and seismic case. The static loading is primary coming from soil condition surrounding the structure by considering the condition during the construction and final including the residue force. The seismic loading for underground structure is due to relative displacement of soil surrounding the structure due to seismic wave propagation. By the fact Jakarta is located in the high risk zone of earthquake; hence the resistance of the structure under seismic load is really an important issue. Since there is no actual major record for dominant earthquake, thus the development of site specific seismic analysis will be required to get the corresponding ground motion by Shake Analysis in order to determine the displacement of surrounding soil around the underground structure.
By this paper, the authors try to describe the approaches used by structure engineer in quantifying the soil loading surrounding the location and seismic approach. This contribution has been applied in the case of the first MRT Underground in this country.
HAKI Conference, Jakarta, 23rd – 25th August, 2016
PT. Mott MacDonald Indonesia
Indonesia