Comparison of Designing High Rise Buildings Based on Prescriptive Code and Alternatives Due To Specific Earthquake Mechanism in Indonesia

Abstract eng:
High-rise buildings have recently become popular in Indonesia. Particularly, Jakarta, the capital city of Indonesia, has limited spaces left for livings and citizen’s activities. The vertical space development is a solution for the rapid development of Jakarta. Most developers catch the opportunity and race in constructing taller buildings. One of the tall buildings, that is under construction, is a 72-floor-building with the height spans to 326.35 meter above the ground. The lateral restraint system of the buildings consists of shear walls, outriggers and belt trusses, which make this study more interesting. The building is designed based on the prescriptive code. However, nowadays, alternatives are introduced worldwide to design tall buildings with a more reliable solution, written with intention of design for tall buildings. In this paper, we study the design by alternatives to provide more reliable solution for the tall building. The code specifies the seismic design based on two third of the Maximum Considered Earthquake (MCE), but the alternatives, such as LATBSDC 2014 and TBI 2010, specifies the analysis using the MCE as an objective to analyze the performance of the structures. To present a realistic analysis, we consider specific potential earthquake in Indonesia with earthquake mechanism such as megathrust, benioff, shallow crustal, and shallow background. This research for answering the challenge of probability MCE level occurs in Indonesia.

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