RECTORATE BUILDING PERFORMANCE EVALUATION YAPIS PAPUA UNIVERSITY DUE TO THE INFLUENCE OF THE EARTHQUAKE IN JAYAPURA

Abstract

An earthquake measuring 5.4 on the Richter Scale (based on the BMKG report) occurred in the city of Jayapura on 09 February 2023 which caused damage to buildings and casualties. The large number of fatalities and injuries that occurred were mostly not caused by the earthquake itself, but because of being hit by collapsed buildings and falling materials. The condition of the buildings after the earthquake certainly left the remains of the building experiencing damage such as cracks in the walls, cracks in the structural parts of the building, partial collapse of the building, and there were even buildings that experienced total collapse, namely being razed to the ground. The Yapis Papua University rectorate building was one of the buildings damaged by the earthquake. The type of damage to the building is determined visually or using calculations of the structure's bearing capacity after an earthquake, then an analysis of the building's ability to carry the loads acting on an earthquake is carried out and recommendations for repairs to the building are provided. This research began with a field survey and a hammer test was carried out to obtain the compressive strength of columns (35 Mpa), beams (35 Mpa), dimensions and plans of the existing building and the existing data will be input into the SAP program to evaluate the building structure. Based on the results of structural analysis using the SAP program, the output obtained is entered into column Pu and Mu graphs and column shear capacity graphs. Apart from that, the cross-sectional capacity of the working column is also checked. Next, we can conclude the cause of the damage to provide recommendations for repairs that can be made for parts of the building that are damaged and weak in bearing the forces at work. Next, a re-analysis is carried out to ensure the strength of the building after being strengthened to carry the load so that the building is declared suitable for reuse.