Abidin, Muchammad Kadavi Zainal (2022) Pengaruh Diskontinuitas Kolom Pada Bangunan dengan First Soft Story Terhadap Periode Getaran, Rasio Partisipasi Massa, Gaya Geser Dasar dan Simpangan antar Lantai dengan Analisis Gempa Respon Spektrum berdasarkan Sni 1726-2019. Undergraduate thesis, Fakultas Teknik Universitas Merdeka Malang.

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Abstract

Multi-storey buildings with open floors have become a common feature. The open ground floor feature is mainly adopted to accommodate a commercial complex on the ground floor that serves for residential buildings leading to vertical discontinuities.

The structures being modeled is a 10-storey building with first soft story that has variations in the number of column discontinuities by breaking some columns in one portal (MDKT-A), breaking some columns in two portals (MDKT-B) and breaking some columns in several portals (MDKT-C). The modeled structures are the 10-story building with a first soft story and column discontinuities. The building was analyzed dynamically using the SAP2000 program based on SNI 1726-2019. The dynamic analysis used is the analysis of the spectrum response variance. The problem that will be reviewed is how the effect of column discontinuity in the building with the first soft story on the behavior of the building structure when subjected to earthquake loads based on SNI 1726-2019. The results of the analysis will be evaluated on each structural model to the value of the mass participation ratio, the period of vibration of the structure, the base shear force, and the drift story.
Based on the structural performance theory, a structure is said to be safer if it fulfills the requirements where the largest period of structure vibration (+), the smallest x-direction earthquake force (-) and the smallest x- drift story (-), the largest vibration period is obtained in MDKT- A, the smallest x-direction earthquake force on MDKT-A, the smallest x- drift story on MDKT-C. The x direction building structure model that can be
chosen is MDKT-A because it is more dominant where the period of the largest structure vibration and the smallest earthquake force, although the drift story is the largest. While the building structure model that is avoided is MDKT-C because it is inversely proportional to the theoretical hypothesis. In the y-direction earthquake, the largest vibration period is in MDKT-A, the smallest y-direction earthquake force is in MDKT-A, the smallest y- drift story is in MDKT-C. The y-direction building structure model that can be chosen is MDKT-A because it is more dominant where the period of the largest structural vibration and the smallest earthquake force, although the drift story is the largest. Meanwhile, the model of the building structure that is avoided is MDKT-C because it is inversely proportional to the theoretical hypothesis.

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