PENGARUH PENAMBAHAN DINDING GESER BETON BERTULANG TERHADAP KINERJA STRUKTUR GEDUNG BIZ SQUARE APARTMENT SURABAYA ZONA 1
THE EFFECT OF THE ADDITION OF REINFORCED CONCRETE SHEAR WALLS ON THE PERFORMANCE OF THE BIZ SQUARE APARTMENT SURABAYA ZONE 1 BUILDING STRUCTURE
Biz Square Apartment Surabaya zona 1 merupakan gedung 15 lantai (Elevasi + 46,60 m) yang didesain tanpa menggunakan dinding geser. Penelitian ini dimaksudkan untuk menganalisa kinerja struktur gedung eksisting tanpa dinding geser, serta menganalisa pengaruh penambahan dinding geser 5 model pada arah memanjang gedung (Arah X). Pelaksanaan penelitian dilakukan secara observasi eksperimental menggunakan pendekatan kuantitatif. Pemodelan dilakukan secara tiga dimensi menggunakan program ETABS 2016. Dari hasil output pemodelan, kemudian dilakukan analisa kinerja struktur berdasarkan parameter SNI 1726:2012 serta parameter ATC 40. Level kinerja struktur dapat diketahui menggunakan analisis statik nonlinier pushover. Hasil penelitian menunjukkan bahwa kinerja struktur gedung eksisting arah X adalah 489,411 mm (DC) serta arah Y adalah 492,494 mm (DC). Kinerja struktur gedung model 1 arah X berkurang 88,641 mm (400,770 mm : IO) serta arah Y bertambah 17,018 mm (509,512 mm : DC) dibanding gedung eksisting. Kinerja struktur gedung model 2 arah X berkurang 111,035 mm (378,376 mm : IO) serta arah Y bertambah 31,515 mm (524,009 mm : DC) dibanding gedung eksisting. Kinerja struktur gedung model 3 arah X berkurang 123,990 mm (365,421 mm : IO) serta arah Y bertambah 40,087 mm (532,581 mm : DC) dibanding gedung eksisting. Kinerja struktur gedung model 4 arah X berkurang 161,486 mm (327,925 mm : IO) serta arah Y bertambah 53,318 mm (545,812 mm : DC) dibanding gedung eksisting. Sedangkan kinerja struktur gedung model 5 arah X berkurang 237,161 mm (252,250 mm : IO) serta arah Y bertambah 75,507 mm (568,001 mm : DC) dibanding gedung eksisting. Hasil penelitian menunjukkan bahwa titik maksimum kinerja arah X terjadi pada gedung model 5 (252,250 mm : IO), sedangkan arah Y terjadi pada gedung eksisting (492,494 mm : DC). Penambahan dinding geser berpengaruh terhadap peningkatan kekakuan gedung arah X serta penurunan kekakuan gedung arah Y.
Kata Kunci: Dinding Geser, Kinerja Struktur, SNI 1726:2012, ATC 40.
Biz Square Apartment Surabaya zone 1 is a 15-story building (Elevation + 46,60 m) that is designed without using a shear wall. This research was intended to analyze the performance of existing building structures without shear walls, as well as to analyze the effect of adding 5 models of shear walls to the elongated building (X-direction). The research was carried out by an experimental observation with a quantitative approach. The modeling was done in three dimensions using the 2016 ETABS program. From the output of modeling, an analysis of the structure performance is then applied based on SNI 1726:2012 parameters and ATC 40 parameters. The level of structure performance can be determined using static nonlinier pushover analysis. The result showed that the performance of the existing building structure in the X-direction was 489,411 mm (DC) and Y-direction was 492,494 mm (DC). The performance of the 1- direction X building structure model decreased 88,641 mm (400,770 mm : IO) while the Y direction increased 17,018 mm (509,512 mm : DC) compared to the existing building. The performance of the 2-way X model building structure decreased by 111,035 mm (378,376 mm : IO) while the Y direction increased by 31,515 mm (524,009 mm : DC) compared to the existing building. The performance of the 3-way X model building structure decreased by 123,990 mm (365,421 mm : IO) while the Y direction increased by 40,087 mm (532,581 mm : DC) compared to the existing building. The performance of the 4-direction X model building structure decreased by 161,486 mm (327,925 mm : IO) while the Y direction increased 53,318 mm (545,812 mm : DC) compared to the existing building. While the performance of the 5-direction X model building structure decreased 237,161 mm (252,250 mm : IO) and the Y direction increased 75,507 mm (568,001 mm : DC) compared to the existing building. The results showed that the maximum point of performance in the X direction occurs in the model 5 building (252,250 mm : IO), while the Y direction occurs in the existing building (492,494 mm : DC). The addition of shear walls affected the increase of building stiffness in the X-direction as well as the decrease of building stiffness in the Y-direction.
Keywords: Shear Walls, Structural Performance, SNI 1726:2012, ATC 40.