ISWARI, SARAH NARA (2026) PENGARUH ORIENTASI KOLOM TERHADAP KINERJA STRUKTUR BETON BERTULANG GEDUNG TIDAK BERATURAN DENGAN METODE PUSHOVER MENGACU PADA SNI 1726-2019 DAN ATC-40. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Laju pertumbuhan penduduk merupakan salah satu tantangan terhadap ketersediaan lahan. Salah satu inovasi dalam mendukung hal ini merupakan penggunaan kolom persegi panjang untuk menciptakan kesan ruangan yang lebih luas. Jika orientasi pada kolom persegi panjang diatur dengan baik, struktur akan lebih kaku dan mampu mereduksi simpangan lateral. Penelitian ini dilakukan untuk mengetahui pengaruh orientasi kolom terhadap gaya dalam, kinerja, dan pola keruntuhan struktur beton bertulang menggunakan pushover analysis dengan acuan SNI 1726:2019 dan ATC40. Objek penelitian merupakan Gedung Kantor 8 lantai dengan ketidakberaturan horizontal torsi, sudut dalam, dan diskontinuitas diafragma yang berlokasi di Pejaten, Jakarta Selatan. Analisis pushover dilakukan dengan 3 model, yaitu pada model I sumbu kuat kolom mengarah ke Y, model II sumbu kuat kolom mengarah ke X, dan model III variasi dengan sumbu kuat ke arah X dan Y. Akibat adanya ketidakberaturan horizontal torsi pada arah Y, didapatkan Model I memberikan struktur dengan kekakuan dan kestabilan yang baik dibandingkan Model II dan III. Perpindahan terbesar pada model I arah X: 70,209 mm dan arah Y: 73,131 dengan selisih terbesar pada lantai 3: 3,959 mm; pada model II arah X: 39,386 mm dan arah Y: 113,161 mm dengan selisih terbesar pada lantai Atap: 74,417 mm; pada model III arah X: 55,941 mm dan arah Y: 84,968 mm dengan selisih terbesar pada lantai Atap: 33,684 mm. Pada simpangan antar lantainya Simpangan antar lantai terbesar pada Model I arah X: 91,335 dan arah Y: 82,462 dengan selisih terbesar pada Lantai Atap: 11,391; Pada Model II arah X: 49,621 dan arah Y: 164,978 dengan selisih terbesar pada Lantai 3: 115,357; pada model III arah X: 69,003 dan arah Y: 112,662 dengan selisih terbesar pada lantai 3: 43,659. Gaya geser dasar pada Model I arah X: 1805,727 kN dan arah Y: 1783,982 kN dengan selisih 21,290 kN; pada Model II arah X: 2525,5539 kN dan arah Y: 1519,3943 kN dengan selisih: 1006,160 kN; pada Model III arah X: 1849,1242 kN dan arah Y: 1722,7176 kN dengan selisih: 123,407 kN. Kinerja struktur yang didapatkan dari analisis pushover yaitu tingkat kinerja pada Model I arah X: Immidiate Occupancy dan arah Y: Damage Control dan pada Model II dan III arah X ataupun arah Y: Immidiate Occupancy. Hasil analisis pushover terhadap pola keruntuhan elemen struktur didapatkan Model I memiliki hasil yang paling ideal dengan pola keruntuhan beam side way mechanism. Sedangkan pada Model II dan III memiliki pola keruntuhan soft story mechanism karena sendi plastis pertama yang terletak pada kolom. Population growth is one of the challenging factors affecting land availability. An innovative solution to support this issue is the use of rectangular columns to create a more spacious impression. If the orientation of the rectangular columns is properly arranged, the structure will be more rigid and able to reduce lateral deflection. This study was conducted to determine the effect of column orientation on internal forces, performance, and collapse patterns of reinforced concrete structures using pushover analysis with reference to SNI 1726:2019 and ATC-40. The object of the study was an 8-story office building with horizontal torsional, re-entrant corners, and diaphragm discontinuities irregularities located in Pejaten, South Jakarta. Pushover analysis was performed using three models: Model I with the column's strong axis oriented toward the Y-direction, Model II with the column's strong axis oriented toward the Xdirection, and Model III with variations in the strong axis oriented toward both the Xand Y-directions. Due to the horizontal torsional irregularity in the Y-direction, Model I provided a structure with better stiffness and stability compared to Models II and III. The largest displacement in model I in the X direction: 70.209 mm and in the Y direction: 73.131 mm, with the largest difference on the 3rd floor: 3.959 mm; in model II in the X direction: 39.386 mm and in the Y direction: 113.161 mm, with the largest difference on the roof floor: 74.417 mm; in model III, the direction X: 55.941 mm and direction Y: 84.968 mm with the largest difference on the Roof floor: 33.684 mm. The largest inter-story drift in Model I is in the X direction: 91.335 and in the Y direction: 82.462, with the largest difference on the Roof Floor: 11.391; In Model II, direction X: 49.621 and direction Y: 164.978 with the largest difference on Floor 3: 115.357; in Model III, direction X: 69.003 and direction Y: 112.662 with the largest difference on Floor 3: 43.659. Base Shear in Model I in the X direction: 1805.727 kN and in the Y direction: 1783.982 kN with a difference of 21.290 kN; in Model II, direction X: 2525.5539 kN and direction Y: 1519.3943 kN with a difference of 1006.160 kN; in Model III, direction X: 1849.1242 kN and direction Y: 1722.7176 kN with a difference of 123.407 kN. The structural performance results obtained from the pushover analysis are the performance levels in Model I in the X direction: Immediate Occupancy and in the Y direction: Damage Control, and in Models II and III in both the X and Y directions: Immediate Occupancy. The results of the pushover analysis on the failure pattern of structural elements show that Model I has the most ideal results with a beam side way mechanism failure pattern. Meanwhile, Models II and III have a soft story mechanism failure pattern due to the first plastic hinge located in the column.
| Item Type: | Thesis (S1) |
|---|---|
| NIM/NIDN Creators: | 41123120055 |
| Uncontrolled Keywords: | Orientasi Kolom, Ketidakberaturan Horizontal, Analisis Pushover |
| Subjects: | 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 624 Civil Engineering/Teknik Sipil > 624.1 Structural Engineering and Underground Construction/Teknik Struktural dan Konstruksi Bawah Tanah |
| Divisions: | Fakultas Teknik > Teknik Sipil |
| Depositing User: | Haqi ar rachma nur |
| Date Deposited: | 02 Apr 2026 03:58 |
| Last Modified: | 02 Apr 2026 03:58 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/101420 |
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