
Perancangan Struktur Beton Bertulang Sistem Ganda Tahan Gempa Gedung Fakültas Di Universitas Borneo Tarakan Menggunakan SM 2847:2019 Dan SM 1729:2019 (Studi Kasus: Fakultas Keguruan Dan Limu Pendidikan)
Pengarang : Harfri Swasanto - Personal Name;
Perpustakaan UBT : Universitas Borneo Tarakan., 2023XML Detail Export Citation
Abstract
Kebutuhan ruang kelas dan kantor sangat dibutuhkan untuk menunjang kegiatan administrasi dan belajar mengajar mahasiswa, sehingga tidak ada lagi keterbatasan fasilitas pendidikan. Dikeluarkannya peraturan terbaru tahap kegiatan perancangan gedung dan desain elemen struktur diharapkan diterapkan agar struktur mampu bergerak sesuai ketika menahan beban lateral desain, hal tersebut menjadi landasan penelitian. Perancangan gedung dengan 9 lantai ketinggian total 37 meter penggunaan sistem ganda dan desain elemen tahan gempa dengan SNI 2847:2019, SNI 1726:2019, SNI 1727:2020, serta SNI 2507:2017. Data primer perancangan gedung (denah, 3D gedung, detail elemen) dan data sekunder yakni data tanah perancangan gedung hasil boring tahun 2011, Nilai rata-rata N ̅ = 13,309 < 15 kelas situs tanah lunak (SE) lubang boring 2, dengan KDS IV-D nilai SDS = 0,558 dan SD1 = 0,4185. Mutu tekan beton K-350 Kg/m3 dan 400 Kg/m3, kelas baja dengan BjTS 420 MPa dan BjTS 280 MPa, Gempa desain izin menggunakan analisis respons spektrum hasil kosekuensi ketidakberaturan, pada tahap pengecekan struktur. Mekanisme kegagalan rangka memikul beban lateral 33% (arah-x), 37% (arah-y) dan dinding struktur 67% (arah-x), 63% (arah-y), Kontrol frekuensi fundamental struktur batasan 1,025 detik dan persentase sebesar 1,504 detik dengan 70,8% (UY) dan 1,437 detik (UX) dengan 59,7%, rasio jumlah ragam 90% mode 10 dan 100% pada mode 45. Hasil desain tulangan berdiameter yakni; 13mm, 16mm, 19mm, 22mm, serta 25mm. Strong Colomn Weak Beam (SCWB) K1 lantai 1 terhadap balok merangkak kolom arah-x ΣMnKolom = 3118,22 kNm > Σ1,2MnBalok = 156,97 kNm dan arah-y ΣMnKolom = 2681,76 kNm > Σ1,2MnBalok = 2245,37 kNm, Rasio kolom SRPMK K1 lantai 1 1,69% dan kolom K1 lantai 2-4 1,69%, K1 lantai 5-9 1,37% dan K1 Teras 1,06%, menggunakan sambungan lap splice, Rasio dinding geser SDSK P1 2,18%, P2 1,79%, dan P3 2,18% pemberian sengkang ikat rasio > 1% penggunaan sambungan lap splice.
Kata Kunci: Desain, Gempa, Ketidakberaturan, Respons Spektrum, Sistem Ganda.
To support administrative tasks, student instruction, and student learning, classrooms and offices are essential so that there are no longer any restrictions on educational facilities. In order for the structure to be able to move appropriately when resisting the lateral load of the design, it is expected that the most recent regulations for building planning activities and the design of structural elements be adopted. The design of a building with nine floors and a total height of 37 meters, employing a double system, and the design of carthquake-resistant elements with SNI 2847-2019, SNI 1726:2019, SNI 1727 2020, and SNI 2507-2017, serve as the basis for the research. Primary data of the building design included the plan, 3D building, and element details Secondary data was the land data of building design boring results in 2011, with Average value 13,309 15 soft soil site class (SE) boring hole 2, with KDS IV-D SDS value = 0.558 and SDI = 0.4185, Compressive quality of concrete K-350 Kg/m2 and 400 Kg/m3, steel grade with BjTS 420 MPa and BjTS 280 MPa, Earthquake design permission using spectrum response analysis results of irregular consequences, at the structure checking stage. The structural wall failed in 67% (x- direction), 63% (y-direction), and the frame bearing the lateral load failed in 33% (x- direction), 37% (y-direction). The maximum amount of time that could be controlled for the structure's fundamental frequency was 1.025 seconds, and the percentages were 1.504 seconds with 70.8% (UY) and 1.437 seconds with 59.7% (UX). The number of variations was 90% in mode 10 and 100% in mode 45. The results of the diameter reinforcement design were 13 mm, 16 mm, 19 mm, 22 mm, and 25 mm. The diameter reinforcement design produced results of 13, 16, 19, 22, and 25 mm. Column KI of the first level facing the crawling beam column in the x-direction was a Strong Column Weak Beam (SCWB). When using a lap splice connection. MnColumn 3118.22 kNm 1.2MnBeam = 156.97 kNm and MnColumn-2681.76 kNm>1.2MnBeam-2245, 37 kNm, respectively. Shear wall ratio SDSK P1 2.18%, P2 1.79%, and P3 2.18% gave the ratio > 1% lap splice connection. Keywords: Design, Earthquake, Irregularity, Spectral Response, Dual System