Evaluasi Kinerja Seismik Gedung D Fakultas Geografi yang Diperkuat dengan Bracing dan Shear Panel Damper
Isnaini Heriawati, Dr. Ir. Inggar Septhia Irawati, S.T., M.T., IPM. ; Angga Fajar Setiawan, S.T., M.Eng., Ph.D.
2025 | Tesis | S2 Teknik Sipil
Salah satu struktur beton bertulang yang berfungsi sebagai fasilitas
pendidikan, yaitu Gedung D Fakultas Geografi, dibangun pada tahun 2011 dengan
rencana awal memiliki enam lantai. Namun, akibat keterbatasan anggaran, gedung
tersebut saat ini hanya terdiri dari tiga lantai. Mengingat peningkatan jumlah
mahasiswa, pengelola berencana melanjutkan pembangunan sesuai rencana awal. Penelitian
ini bertujuan untuk mengevaluasi kinerja seismik Gedung D berdasarkan standar
terbaru serta mengusulkan perkuatan struktur menggunakan bracing dan shear
panel damper (SPD). Analisis dilakukan dengan metode nonlinear static
procedure (pushover).
Hasil analisis pushover menunjukkan bahwa perkuatan dengan Bracing
dan SPD secara signifikan meningkatkan kapasitas geser dasar (base shear),
kekakuan lateral, dan kemampuan deformasi struktur. Struktur tanpa perkuatan
tidak memenuhi kriteria penerimaan global maupun kriteria penerimaan untuk deformation-controlled
dan force-controlled pada level kinerja Immediate Occupancy
(BSE-1E) dan Life Safety (BSE-2E). Setelah perkuatan, gedung memenuhi
kriteria penerimaan global drift ratio untuk kedua level kinerja tersebut,
meskipun beberapa elemen masih belum memenuhi kriteria penerimaan deformation-controlled
dan force-controlled. Secara keseluruhan, perkuatan dengan Bracing dan
SPD meningkatkan kekuatan dan kinerja global struktur, sehingga menjadikan
gedung lebih aman terhadap beban gempa.
One of the reinforced concrete structures serving as an educational
facility, namely Building D of the Faculty of Geography, was constructed in
2011 with an initial plan to have six stories. However, due to budget
constraints, the building currently consists of only three stories. Considering
the increasing number of students, the management plans to continue
construction according to the original design. This study aims to evaluate the
seismic performance of Building D based on the latest standards and propose
structural strengthening using bracing and shear panel dampers (SPD). The
analysis was conducted using the nonlinear static procedure (pushover).
The pushover analysis results indicate that strengthening with
bracing and SPD significantly enhances the base shear capacity, lateral
stiffness, and deformation capacity of the structure. The non-reinforced structure does not meet the global acceptance criteria or the acceptance
criteria for deformation-controlled and force-controlled elements
at the Immediate Occupancy (BSE-1E) and Life Safety (BSE-2E)
performance levels. After strengthening, the building satisfies the global drift
ratio acceptance criteria for both performance levels, although some
elements still do not meet the acceptance criteria for deformation-controlled
and force-controlled components. Overall, strengthening with bracing and
SPD improves the structural strength and global performance, making the
building safer against seismic loads.
Kata Kunci : Nonlinear static procedur, evaluasi seismik, Shear panel damper