Perencanaan Struktur Gedung Syariah Tower Universitas Airlangga Menggunakan Beton Bertulang Dan Baja-Beton Komposit

Gedung Syariah Tower Universitas Airlangga setinggi 20 lantai (± 85,00 m) terletak di zona gempa sedang. Ditinjau berdasarkan konfigurasi gedung, gedung ini termasuk gedung yang tidak beraturan sehingga harus didesain dengan analisa respon dinamik.. Sistem yang digunakan dalam perencanaan gedung ini adalah Sistem Ganda yang mana beban gravitasi dipikul oleh Sistem Rangka Pemikul Momen Menengah (SRPMM) dan gaya lateral dipikul oleh Sistem Dinding Struktur Biasa (SDSB) beton tanpa detailing khusus. Keseluruhan struktur direncanakan menggunakan beton bertulang. Struktur beton bertulang dipilih karena dianggap kokoh dan kuat terhadap beban gempa bumi, getaran, maupun beban angin (Asroni, 2010). Diatas pintu masuk (entrance) terdapat balok dengan bentang 16,00 m. Balok tersebut didesain menggunakan balok baja komposit berselubung beton. Struktur komposit ini dipilih karena memiliki kemampuan untuk menopang panjang bentang yang lebih besar (Salmon,1991). Pedoman yang digunakan adalah SNI 03-2847-2013 tentang Tata Cara Perhitungan Beton untuk Bangunan Gedung, SNI 03-1726-2012 tentang Tata Cara Perencanaan Ketahanan Gempa untuk Bangunan Gedung, PPIUG 1983 mengenai Peraturan Pembebanan, dan SNI 03-1729-2002 tentang Tata Cara Perhitungan Baja. ============================================================================================================ Design of Airlangga University’s building, Syariah Towes, was as high as 20 stories (±85,00 m) located on medium earthquake zone. Based on its building configuration, this building was included into a uniform structure so that it must be designed using dinamic respons analysis. The system that was used on this design was Dual System where the gravitation load was accepted by Intermediate Moment Frame Bearer System and the lateral load was accepted by Ordinary Structure Wall System concrete without any spesific detailing. All of structures were designed with common reinforcement concrete. Reinforcement concrete was chosen because it was strong to arrest the earthquake load, vibration, or wind load (Asroni, 2010). There are beams on the entrance with 16 m of length. The beams were designed with compoite beam. The composite structure that were chosen was enchased beam composite. The composite structure was used because of its capability to sopport longer beam (Salmon,1991). The design of bulding with Intermediate Moment Frame Bearer System with eartquake zone of Surabaya, zone 3 (three), was designed with the earthquake resistant building rules, such as SNI 03-2847-2013, SNI 03-1729-2012, SNI 03-1726-2002, PPIUG 1983, and SNI 03-1729-2002. Key word : Dual System, Enchase