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"[ABSTRAKSemakin bertambahnya kebutuhan ruang vertikal di kota besar seperti Jakartamembuat para ahli membangun banyak bangunan bertingkat. Meski demikian,rencana ini tidak selalu efektif oleh karena keberadaan bangunan purbakala(heritage) yang harus dilestarikan. Oleh karena itu, bangunan baru harus dibangunmenggunakan sistem transfer yang dalam penelitian ini berupa kombinasi antarabalok transfer prategang parsial dan kolom-kolom pendukung. Analisa pushoverakan dilakukan untuk bangunan ini sehingga kinerja bangunan pada fase inelatisdapat diketahui. Hasil bangunan sistem transfer akan dibandingkan dengan hasilanalisa pushover pada bangunan regular untuk mengetahui pengaruh keberadaansistem transfer terhadap kinerja inelastik struktur. Sebelum dilakukan analisapushover, bangunan didesain secara dinamik linear dengan mengacu padaperaturan SNI 03-1726-2012 dan SNI 03-2847-2002. Hasil perbandinganmenunjukkan pertambahan degree of prestressing akan memperkecil daktilitasdan kemampuan disipasi energi bangunan. Rasio pengurangan kemampuandisipasi energi bervariasi antara 15% - 23%. Kinerja terendah seluruh bangunanpada saat target perpindahan ialah Life Safety, yang mana merupakan level kinerjaBasic Safety Objectives berdasarkan FEMA 356. Dari sini dapat ditarikkesimpulan bahwa peraturan yang digunakan dalam desain mampu menghasilkanbangunan dengan performa cukup baik.

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ABSTRACTThe increasing need of vertical room in Jakarta made experts build a lot of multistoriesbuildings. Nonetheless, this plan is not always effective because of thepresence of heritage building which must be preserved. Consequently, newbuilding must be built using a transfer system which in this research is acombination between partially prestressed transfer beam and supporting columnsbelow the beam. To determine the inelastic performance of the building, pushoveranalysis will be applied. The pushover analysis result for transfer system buildinglater will be compared with the result for regular building to understand the effectof transfer system to structure?s inelastic performance. Prior to applying pushoveranalysis, both buildings are designed based on SNI 03-1726-2012 and SNI 03-2847-2002 codes. The comparison shows the degree of prestressing accretion willreduce the ductility and energy dissipation capacity of the building. The reductionof energy dissipation capacity ratio varies between 15% - 23%. The lowestperformance of both buildings at target displacement is Life Safety, which is theBasic Safety Objectives performance based on FEMA 356. From this, it can beconcluded that the codes used in designing the building is able to producebuilding with quite good performance., The increasing need of vertical room in Jakarta made experts build a lot of multistoriesbuildings. Nonetheless, this plan is not always effective because of thepresence of heritage building which must be preserved. Consequently, newbuilding must be built using a transfer system which in this research is acombination between partially prestressed transfer beam and supporting columnsbelow the beam. To determine the inelastic performance of the building, pushoveranalysis will be applied. The pushover analysis result for transfer system buildinglater will be compared with the result for regular building to understand the effectof transfer system to structure’s inelastic performance. Prior to applying pushoveranalysis, both buildings are designed based on SNI 03-1726-2012 and SNI 03-2847-2002 codes. The comparison shows the degree of prestressing accretion willreduce the ductility and energy dissipation capacity of the building. The reductionof energy dissipation capacity ratio varies between 15% - 23%. The lowestperformance of both buildings at target displacement is Life Safety, which is theBasic Safety Objectives performance based on FEMA 356. From this, it can beconcluded that the codes used in designing the building is able to producebuilding with quite good performance.]"

"Denah L merupakan salah satu denah asimetris tipikal yang sering digunakan berdasarkan pertimbangan sisi arsitektural dan keterbatasan lahan. Namun, terdapat beberapa masalah yang muncul akibat dari penggunaan bentuk denah tersebut terkait dengan kerusakan struktural akibat gempa bumi. Di era teknologi sekarang ini, rekayasa seismik telah menemukan suatu inovasi teknologi dalam menyelesaikan permasalahan struktur konvensional, yang dikenal dengan istilah isolasi dasar. Sistem isolasi dasar telah menjadi ciri utama desain struktural dalam dekade terakhir ini. Dalam penelitian ini, objek yang digunakan berupa isolator jenis lead rubber bearing LRB. Hasil penelitian ini akan membahas perbandingan respon global, rasio tulangan, dan tebal ekivalen beton pada kedua model, baik pada model konvensional maupun model berisolasi dasar. Untuk mencapai objektif penelitian, akan digunakan variasi panjang sayap denah L dan ketinggian bangunan. Sebanyak 18 jenis model diperuntukkan sebagai gedung perkantoran mulai dari 5 hingga 7 tingkat; setengah dari jumlah tersebut akan didesain secara sistem ganda berbasis DBE Design Basis Earthquake dan lainnya akan didesain secara distribusi linier gaya vertikal berbasis target spektrum MCE Maximum Considered Earthquake kota Jakarta kasus tanah lunak. Pada akhirnya, respon utama dinamik pada model berisolasi dasar akan diperoleh hasil yang lebih baik dibanding model konvensional. Lebih jauhnya, dengan penggunaan isolasi dasar dapat menunjukkan penghematan terhadap material tulangan dan beton masing ndash; masing berkisar 4-16 dan 3-5.

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An 'L' shaped building is one of the typical asymetrical plan being used due to the architectural consideration and limited available area boundaries. However, there are several problems created by these shaped related to structural damage of earthquake. In today rsquo s technological era, seismic engineering has an innovation for thinking advanced technology beyond conventional solutions, called base isolation. Base isolation has become a major feature of structural design in the past decade. In this study, the selected research object is Lead Rubber Bearing LRB .

This paper will focus on comparison the global response, rebar ratio, and equivalent thickness concrete of both conditions, either fixed base or base isolated structures. To compelete this research topic, the variation of length of the wings and building height will be introduced. As many as eighteen models are functioned as office buildings starting form 5 to 7 story tall while half of them are fixed base models designed with dual system in DBE Design Basis Earthquake and others are designed using linear distribution lateral forces in MCE Maximum Considered Earthquake target spectra of Jakarta with soft soil condition. In the end, the dynamic main responses of isolated structure may provide better result compared to fixed base structure. Furthermore, the usage of base isolation could lead to the saving effort of rebar and concrete, 4 16 and 3 5 , respectively."