Analisis Kinerja Bangunan Ketidakberaturan Horizontal Berdasarkan Metode Respons Spektrum dan Time History (Studi Kasus Gedung Simpang Temu MRT Dukuh Atas Jakarta)

Simbolon, Steffy Catharina Rebeccha (2023) Analisis Kinerja Bangunan Ketidakberaturan Horizontal Berdasarkan Metode Respons Spektrum dan Time History (Studi Kasus Gedung Simpang Temu MRT Dukuh Atas Jakarta). S1 thesis, Universitas Kristen Indonesia.

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Abstract

Indonesia secara geografis terletak di kawasan cincin api pasifik, sehingga berpotensi terhadap ancaman gempa. Khususnya di Pulau Jawa yang memiliki infrastruktur dan penduduk paling padat dan terletak diantara lempeng Indo – Australia dan lempeng Eurasia sehingga menyebabkan wilayah ini banyak terdapat gunung api aktif dan memiliki potensi tinggi terhadap gempa bumi. Oleh karena itu perlu dilakukan tinjauan beban gempa rencana dalam perencaan desain struktur bangunan terhadap wilayah dan fungsi bangunan agar dapat meminimalisir bahkan mencegah kerugian apabila terjadi gempa. Penelitian ini bertujuan untuk mengetahui kinerja struktur terhadap perpindahan, simpangan antar tingkat dan batas stabilitas struktur terhadap beban gempa serta meninjau ketidakberaturan horizontal struktur berdasarkan peraturan SNI 1726:2019 pada bangunan eksisting di Gedung Simpang Temu MRT Dukuh Atas Jakarta. Proses analisis dilakukan dengan pemodelan 3D bangunan menggunakan program perangkat lunak ETABS, analisis berdasarkan dinamik linear riwayat waktu dan spektrum respons. Analisis riwayat waktu menggunakan catatan rekaman gempa Kobe Japan, ChiChi Taiwan, dan El Centro yang dicocokan terhadap gempa respons spektrum, hasil analisis berdasarkan program dilakukan untuk membandingkan dua metode yang digunakan. Berdasarkan hasil analisis, gedung ini diklasifikasikan kedalam ketidakberaturan horizontal torsi berlebih dengan rasio > 1,4, nilai rata-rata displacement dilantai 2 sampai lantai 12 arah horizontal X melebihi nilai drift limit. Hasil batas koefisien stabilitas struktur terhadap displacement berdasarkan pengaruh P-Delta masih memenuhi batas stabilitas struktur sehingga dapat dinyatakan bahwa struktur dalam keadaan stabil dan aman. Kata Kunci: Ketidakberaturan Horizontal, Spektrum Respons, Riwayat Waktu, Perpindahan, Simpangan Antar Tingkat. / Indonesia is geographically located in the Pacific Ring of Fire, so it has the potential to be vulnerable to earthquakes. Especially on the island of Java, which has the densest infrastructure and population and is located between the Indo Australian plates and the Eurasian plates, causing this area to have many active volcanoes and a high potential for earthquakes. Therefore it is necessary to pay the planned earthquake load in planning the design of the building structure for the area and function of the building to minimize and even prevent losses in the event of an earthquake. This study aims to determine the structure's performance against safeguards, deviations between levels, and structural stability limits against earthquake loads and to review horizontal structural irregularities based on SNI 1726: 2019 regulations in existing buildings at the Simpang Temu MRT Dukuh Atas Jakarta Building. The analysis process was carried out by 3D building modeling using the ETABS software program, analysis based on dynamic time history and spectrum response. Historical time analysis uses recorded earthquake records of Kobe Japan, ChiChi Taiwan, and El Centro which match the earthquake response spectrum, the results of the analysis based on the program were carried out to compare the two methods used. Based on the results of the analysis, this building is classified into horizontal irregularities with excessive torque ratio > 1.4, the average displacement value from the 2nd floor to the 12th floor in the horizontal direction X exceeds the drift value limit. The results of the instability limit for structural stability against displacement based on the P-Delta effect still meet the structural stability limits so it can be stated that the structure is stable and safe. Keywords: Horizontal Irregularity, Response Spectrum, Time History, Displacement, Story Drift.

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