Institusion
Universitas Kristen Indonesia
Author
Simbolon, Steffy Catharina Rebeccha
Subject
Engineering (General). Civil engineering (General)
Datestamp
2024-04-22 08:59:21
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.