EVALUATION OF THE PERFORMANCE OF HIGH-RISE BUILDING STRUCTURE GRAND SHAMAYA APARTMENT TOWER AUBREY SURABAYA
DOI:
https://doi.org/10.26740/rekats.v13n01.p166-178Keywords:
Performance Evaluation, Structural Optimization, Effect of P-Delta Stability, Inter-Level DeviationAbstract
The rapid growth of urbanization has increased the need for vertical housing, especially in metropolitan cities such as Surabaya. The Grand Shamaya Apartment, which has a height of 44 floors, is located in a soft soil area, using a special reinforced concrete sliding wall structure system. This study aims to evaluate the performance of existing structures against lateral loads due to earthquakes and optimize structural design. The results of the analysis show that the existing structure does not meet several requirements, such as the deviation between the maximum levels and the stability coefficient due to the influence of P-Delta which exceeds the SNI 1726:2019 permit limit. Therefore, a review was carried out by applying a dual structure system to three modification models, namely the addition of column elements, the enlargement of column and beam dimensions, and the change in the orientation of structural elements. The evaluation results show that the third modification, namely the enlargement of the dimensions of the structural elements, produces optimal performance with a maximum inter-level deviation of 54.225 mm (X direction) and 55.759 mm (Y direction) not exceeding the drift limit of 70 mm, and the maximum stability coefficient of 0.084 (X direction) and 0.083 (Y direction) does not exceed 0.091. The design of this structural modification is in accordance with SNI 2847:2019 and the principle of strong column weak beam so as to improve the stability and safety of the building. Thus, the optimization of column and beam structures plays a significant role in improving the performance of the structure against the lateral load of the earthquake.
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