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"This paper presents the development of the modern long span bridges, particularly the concrete bridges, which are widely and fast developed in the last thirty years. Following the development of the prestressed concrete technology. supported also by the success of modern concrete technology in the high strength and high performance concrete production, cable stayed bridges may present an economical and aesthetical solutions for long span and very long span bridges, which can be anticipated to be the modern trend of bridges in the next century."

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Bentuk struktur bangunan tinggi yang terus berkembang menuntut keberadaan loncatan bidang muka untuk meningkatkan efisiensi dan estetika bangunan. Loncatan bidang muka dapat dicapai dengan menggunakan sistem balok kantilever lepas yang tidak saling terhubung satu sama lain, atau sistem balok transfer di mana setiap balok kantilever di setiap tingkat dihubungkan dengan kolom transfer. Penelitian ini membahas perbandingan respons seismik dari variasi sistem dan panjang bentang kantilever, jumlah tingkat dan kelengkungan yang dianalisis menggunakan ETABS v16.2. Selanjutnya akan disimpulkan signifikansi sistem kantilever dan kelengkungan berdasarkan periode getar, gaya geser tingkat, drift dan displacement, serta gaya dalam kolom dan balok.

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ABSTRACTThe development of highrise building structural shape requires vertical setback in order to enhance building efficiency and aesthetics. In this case, vertical setback can be achieved by using a system in which the cantilever beams are either not connected or connected to each other with a transfer column. The discussions of this study compare every seismic response of cantilever length and system, the number of stories and curvature to be varied. After being analyzed using ETABS v16.2, the significance of different cantilever system and curvature is concluded based on the vibration period, story shear force, drift and displacement, also the internal force of columns and beams.

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"Pada perkembangan infrastruktural, pengaplikasian loncatan bidang muka (Setback Building) sudah lazim digunakan untuk meningkatkan estestika pada struktur bangunan tinggi. Salah caranya yaitu dengan menerapkan  beberapa jenis dari sistem balok kantilever, yaitu  sistem balok kantilever lepas (terpisah satu sama lain), terhubung satu sama lain, atau terhubung sampai ke podium sehingga muncul sistem balok transfer. Oleh karena itu, dalam skripsi ini akan berfokus pada respon seismik terhadap modelisasi struktur bangunan tinggi dengan memvariasikan ketinggian bangunan, struktur dan bentang kantilever pada tower dengan menggunakan software structure ETABS V.17.0.1, untuk mengetahui perilaku dari masing-masing strukturnya. Kemudian akan dibahas hasil perbandingan dari setiap model yang meliputi periode getar, gaya geser tingkat, drift dan perpindahan, serta gaya dalam dinding geser, kolom, maupun balok.

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In the part of infrastructure development, the application of vertical setback is commonly used to increase esthetics in high-rise structures. It can be achieved by using kinds of cantilever beam systems, such as loose cantilever beam systems (separated from each other), connected from each other, or connected to the podium so that beam beam system transfers appear. Therefore, this paper will be focus in seismic response to the modelization of high-structure buildings by varying the height of buildings, cantilever structures and spans of the cantilever on the tower using the ETABS V.17.0.1 software structure, to find out the trait of each structure. Then the results of each model will be analyze which includes the vibration period, story shear, story drift and displacement, and the force in the shear walls, columns, and beams."