EFEK PENAMBAHAN DINDING GESER ATAU PERIMETER BEAMS TERHADAP PERILAKU DINAMIS STRUKTUR PELAT DATAR EMPAT TINGKAT
Abstract: Flat plate
structural system is a plate structural system that supported directly by
columns without column heads or drop panels. The advantages of this system are
distance between the floors can be shortened, faster construction, ease of
architectural work and installation of Mechanical, Electrical and Plumbing
Equipment (MEP). However, this system has a weakness on the join (connection of
slab-column) that is too flexible and susceptible to punching shear failure
especially when the existence of moment due to earthquake. This study
investigates the changes on dynamic behaviors of flat plate structures when it
is added lateral stiffeners such as shear walls or perimeter beams in terms of
its natural period, base shear force, floor displacement, and a change on the
forces of the structural elements. The structure of the building being
simulated is regular structure consisting of 4 floors with 3 meter floor to
floor space and 4 spans along X axis direction (Lx = 6 m) and 3 spans along Y
axis direction (Ly = 5 m). The building is a hotel, which stands on medium soil
in Bali Provice. Flat plate structures with additional of shear walls or
perimeter beam are designed in accordance with the requirements of SNI
03-2847-2002. Analyses were performed in three dimensions (3D) using commercial
software SAP2000 v15, where the three structure models have the same property
namelyplate thickness, column dimensions, mass and material properties. Dynamic
behaviorsare studied based on time history analysis (integration time step)
according to the average acceleration method from Newmark with acceleration
record of the El-Centro earthquake 1940. Analysis shows that addition of shear
walls or perimeter beam causes the natural period of structure and horizontal
displacement decrease, while the base shear force and structural rigidity
increase. Moments, shear forces on columns and shear forces on the plate around
the column decrease with the addition of shear walls. The addition of perimeter
beam increases the moments and shear forces on first floor columns and shear
forces on the plate around the column decrease dramatically on the edge columns
Keywords: Dynamic behavior, flat platestructures, shearwalls,
perimeter beams
Penulis: I Ketut Sudarsana
Kode Jurnal: jptsipildd140756