ANALISIS KERUNTUHAN BERTAHAP (PROGRESSIVE COLLAPSE) PADA GEDUNG AKADEMIK 7 LANTAI DI YOGYAKARTA
PAMUNGKAS, ALWAN WISNU
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The design of earthquake resistant building structures by simulating the placement of shear wall is important in Indonesia, especially in the Special Region of Yogyakarta, to reduce vulnerability in the event of a building collapse which is preceded by a column at the bottom of the floor. Therefore this research was carried out to analyze the performance, structural characteristics and type of progressive collapse based on the General Services Administrations (GSA) 2013. The GSA is a public service administration that provides guidance for progressive collapse in building structures. The aim of GSA is to reduce the potential for progressive collapse by providing a simulation of column deletion scenarios. Progressive collapse is a level of damage or destruction that is not proportional to the magnitude of an event after deletion of several columns based on the GSA 2013 reference. This study uses SAP2000 version 21 software. The columns deletion scenario are symbolized by case 1 (removal of the corner coloum), case 2 (removal of the middle column on the short side), and case 3 (removal of the middle column on the long side). The results showed that the building structure was a strong coloum weak beam. All columns in the building structure symbolized case 1, case 2, and case 3 have no progressive collapse, but most beam elements experience progressive collapse and collapse. Of the three variations of the placement of shear wall, the structure of the building using the central and side shear wall is able to withstand gravitational forces, lateral earthquake forces, and has the possibility of experiencing progressive collapse which is much smaller than the variations in the placement of other shear wall. Based on the deformation and DCR values that occur in the structure of the building, it can be concluded that all building structures are included in the domino collapse type, zipper collapse type and instability collapse type.