Morib, Regend Abyell (2022) Pengaruh Diskontinuitas Balok pada Bangunan dengan Core Wall terhadap Kinerja Struktur Berdasarkan SNI 1726-2019. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

The current building structure has irregularities which one of the causes isthe construction of certain holes or voids on each floor. This results in thestructure of the beam in the building experiencing disconnection or discontinuity. Building irregularities due to beam discontinuities can affect the center of mass ofthe shear building and the stiffness of the building. One alternative to improve the performance structures, to be able to with stand earthquake forces is to use a corewall.
The structure being reviewed is a 12-storey building with a core wall in thecity of Padang. The loading refers to SNI 1727-1989 and SNI 2847-2018. Structural modeling is done in 3D with the help of the SAP 2000 program. Analysis of earthquake forces using the dynamic analysis method for the responsespectrum of SNI 1726-2019. The problem being reviewed is the effect of beam discontinuity on the mass participation ratio, period of vibration, earthquake forces, and the drift between floors.
The results of the analysis show that the mass participation ratio in the xdirection has a number of different shape modes and the y direction has the samenumber of mode shapes, the longest vibration period value occurs in MRGDB 1and the shortest vibration period value occurs in MRGDB 3. The smallest earthquake force value in the x direction and the y direction occurs in MRGDB 2.The value of the deviation between floors in the smallest direction and directionoccurs in MRGDB 3.
Based on the theory of earthquake-resistant building structure performance,the x and y-direction building frame model that can be selected is MRGDB 1, because the value of the vibration period is the largest, the x-direction and the y direction basic earthquake force are in the middle (not the largest and not the smallest) and the value of the deviation between floors in the x-direction and they-direction is in the middle (not the largest and not the smallest). The building frame model in the x and y directions that is avoided is MRGDB 3, because it does not meet the theory of performance of earthquake-resistant building structures where the vibration period is the smallest and the basic earthquake force in the x and y directions is the largest, even though the deviation between floors in the x direction and y direction is the smallest.

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