scholarly journals EVALUASI KINERJA STRUKTUR GEDUNG DUAL SYSTEM BERBASIS KINERJA

2018 ◽  
Vol 1 (2) ◽  
pp. 91
Author(s):  
Dave Fernando Indotjoa ◽  
Daniel Christianto ◽  
Hadi Pranata
Keyword(s):  
Dual System ◽  
Performance Based Design ◽  
Direct Displacement Based Design ◽  
Fema 356 ◽  
Displacement Based

Struktur penahan gaya gempa secara umum memakai konsep Force Based Design. Konsep dari Force Based Design hanya berdasarkan kondisi elastis struktur dan tidak sesuai dengan kondisi sebenarnya dimana struktur gedung mengalami kondisi inelastis ketika mengalami peristiwa gempa. Sehingga perlu dilakukan analisis evaluasi kinerja struktur untuk mengetahui kinerja gedung ketika mencapai kondisi inelastis yang merupakan konsep Performance Based Design. Dalam penilitian ini terdapat dua metode yang dipakai untuk analisis gedung ketika mengalami kondisi inelastis, yaitu metode Direct Displacement Based Design dan metode analisis Pushover. Tujuan dalam penelitian ini untuk mengidentifikasi dan membandingkan kinerja struktur bangunan antara metode-metode tersebut. Penelitian digunakan program ETABS untuk mengetahui berapa besar gaya dan perpindahan yang dapat ditahan oleh struktur. Melalui program ETABS dapat diketahui pula level kinerja struktur bangunan tersebut. Tipe struktur bangunan yang dimodelkan berupa bangunan dengan sistem ganda. Bangunan terbuat dari beton bertulang, jarak bentang arah memanjang 53.7 m, jarak bentang arah memendek 36.2 m, dengan ketinggian 64.5 m, tinggi tiap lantai 4.3 m. Penelitian mengacu pada SNI 1726:2012, ATC-40, FEMA 356, dan FEMA 440.

scholarly journals EVALUASI STRUKTUR SISTEM RANGKA GEDUNG DENGAN DINDING GESER BERBASIS KINERJA

2019 ◽  
Vol 2 (2) ◽  
pp. 105
Author(s):  
Bobby Septianto ◽  
Daniel Christianto ◽  
Hadi Pranata
Keyword(s):  
Performance Based Design ◽  
Direct Displacement Based Design ◽  
Fema 356 ◽  
Immediate Occupancy ◽  
Displacement Based

Indonesia merupakan daerah dengan resiko gempa tinggi, dimana dibutuhkan perencanaan tahan gempa. Struktur penahan gaya gempa secara umum memakai konsep Force Based Design. Konsep dari Force Based Design hanya berdasarkan kondisi elastis struktur dan tidak sesuai dengan kondisi sebenarnya dimana struktur gedung mengalami kondisi inelastis ketika mengalami guncangan gempa. Sehingga perlu dilakukan analisis evaluasi kinerja struktur untuk mengetahui kinerja gedung ketika mencapai kondisi inelastis yang merupakan konsep Performance Based Design. Dalam penelitian ini terdapat dua metode yang dipakai untuk analisis gedung ketika mengalami kondisi inelastis, yaitu metode Direct Displacement Based Design (DDBD) dan metode analisis statik nonlinier Pushover. Tujuan dalam penelitian ini untuk mengindentifikasi hasil output dari kurva kapasitas dan kinerja struktur dari metode ATC-40, FEMA 356, dan FEMA 440, serta membandingkan nilai gaya geser dasar antara SNI 1726:2012 dengan metode DDBD. Tipe struktur bangunan yang dimodelkan berupa bangunan sistem rangka gedung dengan dinding geser. Dari hasil analisis, untuk sistem rangka gedung dengan dinding geser, gaya geser dasar yang diperoleh dari perhitungan dengan metode Direct Dipslacement Based Design lebih kecil dari gaya geser dasar analisis gempa menurut SNI 1726:2012. Dari berbagai metode yang direncanakan sesuai dengan peraturan SNI 1726:2012 menghasilkan level kinerja yang sama menurut ATC-40, FEMA 356, dan FEMA 440 yaitu Immediate Occupancy.

scholarly journals EVALUASI STRUKTUR GEDUNG DENGAN SISTEM RANGKA BETON PEMIKUL MOMEN KHUSUS BERBASIS KINERJA

2019 ◽  
Vol 2 (2) ◽  
pp. 115
Author(s):  
Richard Geraldi ◽  
Daniel Christianto ◽  
Hadi Pranata
Keyword(s):  
Life Safety ◽  
Direct Displacement Based Design ◽  
Fema 356 ◽  
Immediate Occupancy ◽  
Displacement Based

Indonesia merupakan salah satu wilayah yang memiliki resiko tinggi terhadap terjadinya gempa bumi. Gempa bumi yang terjadi dapat menimbulkan kerugian yang sangat besar, salah satunya adalah korban jiwa dalam jumlah yang besar. Oleh karena itu, diperlukannya suatu bangunan tahan gempa untuk mengurangi kerugian yang dapat terjadi. Perencanaan gempa yang umum digunakan saat ini adalah perencanaan berbasis gaya, dimana respons struktur terhadap gempa dianalisis pada kondisi elastis. Namun, pada kondisi sebenarnya struktur akan mengalami kondisi inelastis ketika terkena gempa. Untuk mengatasi kekurangan itu, berkembanglah perencanaan berbasis perpindahan dimana gaya gempa desain ditentukan berdasarkan perpindahan maksimum yang diizinkan pada kondisi inelastik dan kinerja minimum yang diharapkan dari suatu gedung berdasarkan fungsinya. Peraturan gempa yang ada saat ini menggunakan perencanaan berbasis gaya sehingga diperlukan evaluasi terhadap bangunan untuk memastikan kinerjanya pada tingkat minimum yang diizinkan. Untuk menganalisis bangunan pada kondisi inelastik, digunakan analisis pushover dan Direct Displacement Based Design yang diharapkan dapat menggambarkan kondisi bangunan yang sebenarnya. Tingkat kinerja dari struktur bangunan yang didesain berdasarkan SNI 1726:2012 dievaluasi dengan menggunakan metode kapasitas spektrum yang diatur dalam ATC-40 dan FEMA 440 serta metode koefisien perpindahan yang diatur dalam FEMA 356 dan FEMA 440. Hasil yang diperoleh menggambarkan bahwa bangunan yang didesain dengan SNI 1726:2012 ini memiliki tinkat kinerja Immediate Occupancy yang berarti bahwa bangunan ini memenuhi tingkat kinerja minimum yang ditetapkan, yaitu life safety.

scholarly journals Force Based Design and Direct Displacement Based Design for Dual System Structure

2019 ◽  
Vol 19 (3) ◽  
pp. 162
Author(s):  
Annisaa Dina Puspita ◽  
Anis Rosyidah
Keyword(s):  
Shear Force ◽  
Damage Control ◽  
Performance Level ◽  
Dual System ◽  
Reinforcement Ratio ◽  
System Structure ◽  
Building Structures ◽  
Base Shear ◽  
Direct Displacement Based Design ◽  
Displacement Based

The Force Based Design (FBD) and the Direct Displacement-Based Design (DDBD) are methods for designing seismic-resistant buildings. Building structures designed, are expected to be suitable with the purpose and usefulness of a building. For this reason, this study compares the performance of dual system structures using the DDBD and FBD methods that aim to prove better performance with consideration of safety against users during an earthquake. This research method uses design analysis method to compare the value of the base shear force, reinforcement ratio, and performance level using software for static nonlinear pushover analysis. The results showed the value of the base shear force x direction of the DDBD method was 17.57% smaller than the FBD method, whereas for the y direction the DDBD value was greater than 9.38% of the FBD. The value of the reinforcement ratio of the beam, column and shear wall results is greater DDBD than FBD. The actual drift of the DDBD and FBD methods is slightly different. So that both are at the same level of performance, namely damage control. The performance level has not reached the performance target of life safety design in DDBD, but the structure has met the level performance requirements for offices.

scholarly journals PERENCANAAN STRUKTUR DENGAN METODE DDBD BESERTA TINGKAT KINERJANYA DAN IDEALISASINYA TERHADAP SNI 1726 : 2012

2018 ◽  
Vol 1 (1) ◽  
pp. 139
Author(s):  
Nikko Rianto ◽  
Edison Leo
Keyword(s):  
Control Parameter ◽  
Damage Control ◽  
Direct Displacement Based Design ◽  
Fema 356 ◽  
Displacement Based

Perencanaan struktur bangunan gedung tinggi terhadap beban gempa umumnya dilakukan pendekatan desain berbasis gaya. Dalam desain berbasis gaya, biasanya akan dihitung nilai gaya geser dasar desain untuk meramalkan berapa besar nilai gaya yang diberikan pada bangunan pada saat gempa terjadi. Sedangkan dalam desain berbasis kinerja, untuk meramalkan berapa besar gaya geser desain yang diberikan pada bangunan saat terjadi gempa untuk mencapai kinerja struktur yang diinginkan, salah satunya adalah metode Direct Displacement Based Design (DDBD) Priestley et.al. 2007. Dalam metode ini perpindahan sebagai dasar penentuan beban gempa.  Desain dengan metode DDBD diverifikasi apakah desain sudah sesuai dengan tingkat kinerja yang ingin dicapai  dilakukan analisis pushover. Hasil dari analisis pushover berdasarkan pada prinsip desain balok lemah kolom kuat, sehingga sendi plastis tidak boleh terjadi pada kolom sebelum balok mengalami keruntuhan. Dari hasil analisis pushover akan didapatkan kurva kapasitas yang akan menjadi dasar penentuan tingkat kinerja dan sesuai dengan ATC-40, FEMA 356, dan FEMA 440. Kemudian kurva kapasitas tersebut diolah dengan pendekatan gaya untuk mendapatkan parameter-parameter respons struktur R, , dan Cd dan dibandingkan dengan yang terdapat pada SNI 1726 : 2012. Tingkat kinerja struktur gedung yang didapat berada pada level Damage Control. Parameter respons struktur yang didapat lebih kecil daripada yang tercantum pada SNI 1726 : 2012.

scholarly journals Comparative Study of Direct Displacement Based and Forced Based Design Method for RC- Frame with Shear Wall

10.29007/lft5 ◽  
2018 ◽  
Author(s):  
Bijal Chaudhri ◽  
Dipali Patel
Keyword(s):  
Seismic Design ◽  
Design Method ◽  
Shear Wall ◽  
Performance Based Design ◽  
Rc Frame ◽  
Base Shear ◽  
Global Parameter ◽  
Direct Displacement Based Design ◽  
Moment Resisting ◽  
Displacement Based

The Seismic design of structure has conventionally been force based. Displacement is the major factor for the damage rather than force. The alternative procedure for seismic design, which becomes more popular, is performance based design method. Displacement is global parameter of performance based design method. Direct displacement based design method has been used for seismic design of structure. The paper attempts to design moment resisting RC-frame using Displacement based design method and Forced based design method. 15-storey building with shear wall has been taken for parametric study. The parameter like base shear and lateral load distribution are taken for the study. It is observed that base shear of RC building calculated by DDBD is less compared to FBD.

scholarly journals Unified Performance-Based Design of RC Dual system

2021 ◽  
Author(s):  
DURGA MIBANG ◽  
Satyabrata Choudhury
Keyword(s):  
Design Method ◽  
Shear Walls ◽  
Theoretical Background ◽  
Performance Level ◽  
Dual System ◽  
Performance Based Design ◽  
Design Criteria ◽  
Displacement Based ◽  
Target Design ◽  
Method Of Design

Abstract A dual system building is comprised of frames and shear walls. In dual system the shear wall predominantly carries the lateral loads arising out of earthquake or wind. Frame is primarily designed for vertical load along with a fraction of lateral load. The force-based method of design or codal design method can hardly design building for pre-defined target objectives. The alternative method of design is displacement-based design (DBD). Available displacement-based design, like, Direct Displacement-Based design (DDBD) had been applied to dual system. However, DDBD method satisfied only drift criteria and was silent about the performance level. Also, the member sizes had to be obtained through iterations. Unified Performance-Based Design (UPBD) method can accommodate both drift and performance level as target design criteria. In the present study the theoretical background of UPBD method for dual system has been explained and detailed design steps have been highlighted. The method has been validated through several dual system buildings with different target design criteria. Dual system buildings have been designed using UPBD method for target objectives of (i) Immediate Occupancy performance level (PL) with drift 1%, (ii) life Safety PL with drift 2% and, (iii) Collapse Prevention PL with drift 3%. The nonlinear evaluation of the designed buildings shows that in all the cases the target design criteria have been fulfilled. The UPBD method of dual system also gives the member sizes in the beginning of the design and thus avoids iteration in design.

scholarly journals Evaluasi Kinerja Struktur Gedung Bertingkat Menggunakan Pendekatan Desain Berbasis Kinerja

CANTILEVER ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 91-100
Author(s):  
Saifulloh Fatah Pangestu ◽  
M Mirza Abdillah Pratama
Keyword(s):  
Pushover Analysis ◽  
Structural Response ◽  
Direct Displacement Based Design ◽  
Response Parameter ◽  
Earthquake Resistant Structures ◽  
Earthquake Load ◽  
Fema 356 ◽  
Displacement Based ◽  
Design Earthquake ◽  
Parameter Values

In Indonesia, earthquake-resistant structures are governed by SNI as design codes, which are updated on a regular basis. As a result, existing buildings with outdated requirements must be reviewed so that the building's performance may be assessed in light of the most recent codes. Pushover analysis and direct displacement-based design are used to characterize the real condition of the building in order to assess its performance. The 7-story reinforced concrete building structure in this study was designed according to SNI 03-2847-2002 and SNI-1726-2002. This structure will be evaluated utilizing the FEMA 440 and FEMA 356 procedures, as well as SNI 1726:2019. The results show that the structure meets the minimal performance limit criteria (which is life safety) in terms of displacement and drift values from the pushover analysis, based on FEMA 356 and FEMA 440 performance levels. The evaluation indicates better structural response parameter values (R, Ω0, and Cd) than that of SNI 1726:2019, indicating that the building performance is good and capable of withstanding the design earthquake load.

scholarly journals Performance based seismic design

2000 ◽  
Vol 33 (3) ◽  
pp. 325-346 ◽  
Author(s):  
M. J. N. Priestley
Keyword(s):  
Seismic Design ◽  
Performance Based Design ◽  
Limit States ◽  
Existing Structures ◽  
Direct Displacement Based Design ◽  
Capacity Spectrum ◽  
N2 Method ◽  
Performance Based Seismic Design ◽  
Force Reduction ◽  
Displacement Based

One of the major developments in seismic design over the past 10 years has been increased emphasis on limit states design, now generally termed Performance Based Engineering. Three techniques - the capacity spectrum approach, the N2 method and direct displacement-based design have now matured to the stage where seismic assessment of existing structures, or design of new structures can be carried out to ensure that particular deformation-based criteria are met. The paper will outline and compare the three methods, and discuss them in the context of traditional force-based seismic design and earlier design approaches which contained some elements of performance based design. Factors defining different performance states will be discussed, including the need, not yet achieved, to include residual displacement as a key performance limit. Some emphasis will be placed on soil-related problems, and the incorporation of soil/structure interaction into performance-based design. It will be shown that this is relatively straightforward and results in consistent design solutions not readily available with force-based designs using force-reduction factors.

Direct Displacement-Based Design of a RC wall-steel EBF dual system with added dampers

2009 ◽  
Vol 42 (3) ◽  
pp. 167-178 ◽  
Author(s):  
Timothy J. Sullivan
Keyword(s):  
Linear Time ◽  
Design Method ◽  
Design Procedure ◽  
Time History ◽  
Dual System ◽  
System Structure ◽  
Design Solution ◽  
Equivalent Viscous Damping ◽  
Direct Displacement Based Design ◽  
Displacement Based

An innovative application of Direct Displacement-Based Design (DBD) is presented for a modern 8-storey dual system structure consisting of interior concrete walls in parallel to a number of large steel eccentrically braced frames, fitted with visco-elastic dampers at link positions. The innovative DBD methodology lets the designer directly control the forces in the structure by choosing strength proportions at the start of the design procedure. The strength proportions are used to establish the displaced shape at peak response and thereby establish the equivalent single-degree-of-freedom system design displacement, mass and effective height. A new simplified formulation for the equivalent viscous damping of systems possessing viscous dampers is proposed which also utilises the strength proportions chosen by the designer at the start of the process. The DBD approach developed is relatively quick to use, enabling the seismic design of the 8-storey case study structure to be undertaken without the development of a computer model. To verify the ability of the design method, non-linear time-history analyses are undertaken using a suite of spectrum-compatible accelerograms. These analyses demonstrate that the design solution successfully achieves the design objectives to limit building deformations, and therefore damage.

Direct Displacement-Based Design of a RC wall-steel EBF dual system with added dampers

2011 ◽  
Vol 44 (3) ◽  
pp. 167-178 ◽  
Author(s):  
Timothy J. Sullivan
Keyword(s):  
Linear Time ◽  
Design Method ◽  
Design Procedure ◽  
Time History ◽  
Dual System ◽  
System Structure ◽  
Design Solution ◽  
Equivalent Viscous Damping ◽  
Direct Displacement Based Design ◽  
Displacement Based

An innovative application of Direct Displacement-Based Design (DBD) is presented for a modern 8-storey dual system structure consisting of interior concrete walls in parallel to a number of large steel eccentrically braced frames, fitted with visco-elastic dampers at link positions. The innovative DBD methodology lets the designer directly control the forces in the structure by choosing strength proportions at the start of the design procedure. The strength proportions are used to establish the displaced shape at peak response and thereby establish the equivalent single-degree-of-freedom system design displacement, mass and effective height. A new simplified formulation for the equivalent viscous damping of systems possessing viscous dampers is proposed which also utilises the strength proportions chosen by the designer at the start of the process. The DBD approach developed is relatively quick to use, enabling the seismic design of the 8-storey case study structure to be undertaken without the development of a computer model. To verify the ability of the design method, non-linear time-history analyses are undertaken using a suite of spectrum-compatible accelerograms. These analyses demonstrate that the design solution successfully achieves the design objectives to limit building deformations, and therefore damage.

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