A simplified method for collapse capacity assessment of moment-resisting frame and shear wall structural systems

2011 ◽  
Vol 33 (4) ◽  
pp. 1107-1116 ◽  
Author(s):  
Behrouz Shafei ◽  
Farzin Zareian ◽  
Dimitrios G. Lignos
Keyword(s):  
Shear Wall ◽  
Capacity Assessment ◽  
Structural Systems ◽  
Moment Resisting Frame ◽  
Simplified Method ◽  
Moment Resisting

COMPARISON OF SHEAR WALLS AND MOMENT-RESISTING FRAMES IN EARTHQUAKE RESISTING BUILDINGS’ DESIGN

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Ahmad Sheikh Abdallah ◽  
Safwan Chahal
Keyword(s):  
Seismic Response ◽  
Tall Buildings ◽  
Shear Walls ◽  
Shear Wall ◽  
Structural Systems ◽  
Lateral Loads ◽  
Building Height ◽  
Seismic Zones ◽  
Prime Concern ◽  
Moment Resisting

The rapid growth of urban population and limited land space have greatly influenced the development of high-rise structures. Lateral loads have an important effect on the design as the building height increases. In order to resist lateral loads, safety and minimum damage should be the prime concern when designing tall buildings. To meet these requirements, the structure should have adequate lateral strength and lateral stiffness and sufficient ductility. Among the various structural systems, shear wall systems or moment resisting frame systems could be a point of choice for designers. Thus, it is important to review and observe the behavior of these systems under seismic effect. This study compared the seismic response of the above structural systems using a case study application at variable seismic zones (Zone 2B, Lebanon Zone, Zone 3, and Zone 4) and at different building stories (Eight and 12-story building). The seismic response is measured in term of time-period, maximum story displacement, maximum story drift, amount of steel and concrete needed. The outcome of this study portrayed that a shear wall system is more efficient in terms of cost and lateral load resistivity regardless of the building height and in the four seismic zones mentioned before.

scholarly journals Coverage intensity of optimal sensors for common, isolated, and integrated steel structures using novel approach of FEM-MAC-TTFD

2019 ◽  
Vol 15 (8) ◽  
pp. 155014771985756 ◽  
Author(s):  
Mehdi Firoozbakht ◽  
Hamidreza Vosoughifar ◽  
Alireza Ghari Ghoran
Keyword(s):  
Base Isolation ◽  
Sensor Placement ◽  
Time History ◽  
Shear Wall ◽  
Optimal Sensor Placement ◽  
Modal Assurance Criterion ◽  
Moment Resisting Frame ◽  
Steel Shear Wall ◽  
Significant Difference ◽  
Moment Resisting

The coverage intensity of sensors is the most important issue on structural health monitoring technique. The geometric configuration of sensors must be optimized based on coverage intensity with proper objectives. In this article, a novel algorithm for optimal sensor placement in various steel frames was evaluated. These frames including moment-resisting frame, moment-resisting frame with base isolation, and moment-resisting frame with base isolation with steel shear wall were selected for case studies. This approach was proposed based on combination of common optimal sensor placement algorithm and nonlinear time history analysis. A new method called transformed time history to frequency domain approach was evaluated to transform nonlinear time history analysis results to frequency domain and then the effective frequencies according the maximum range of Fourier amplitude were selected. The modified type of modal assurance criterion values can be achieved from modal assurance criterion with the exact seismic displacement. All of novel optimal sensor placement processes were done through FEM-MAC-TTFD code modeled and developed in MATLAB by authors of this article. The results show that there is good relative correlation between the sensors number and coverage intensity obtained with modal and modified modal assurance criterion approaches for moment-resisting frame system, but for integrated frame such as moment-resisting frame with base isolation and moment-resisting frame with base isolation with steel shear wall, the modified modal assurance criterion approach is better approach. There is no significant difference between coverage intensity of sensors for top joints between modal assurance criterion and modified modal assurance criterion approaches for moment-resisting frame, moment-resisting frame with base isolation, and moment-resisting frame with base isolation with steel shear wall systems ( R2 = 0.994, 0.986, and 0.724, respectively). It was found that if reference point is located in center of frame, there is significant difference between modal assurance criterion and modified modal assurance criterion approaches, and modified modal assurance criterion generated slightly better results.

scholarly journals ANALISIS PERIODA BANGUNAN DINDING GESER DENGAN BASE ISOLATOR AKIBAT GAYA GEMPA

Teras Jurnal ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 263
Author(s):  
Mul Muliadi Adi ◽  
M. Kabir Kabir Ihsan
Keyword(s):  
Seismic Design ◽  
Time History ◽  
Shear Wall ◽  
Braced Frame ◽  
Moment Resisting Frame ◽  
Rigid Frame ◽  
Base Isolator ◽  
Non Linear ◽  
Moment Resisting ◽  
Performance Based Seismic Design

Bangunan yang hancur oleh gempa dapat dicegah dengan memperkuat struktur bangunan terhadap gaya gempa yang bekerja padanya. Perkuatan bangunan dapat dilakukan dengan memperkaku bangunan dalam arah lateral yaitu <em>moment resisting frame</em> (<em>rigid frame</em>), <em>braced frame</em> dan <em>shear wall</em>. Bangunan dinding geser merupakan salah satu jenis <em>bangunan</em> tahan gempa gedung beton bertulang menggunakan sistem rangka struktur yang dikombinasikan. Kinerja gedung akan bertambah dan menjadi optimal jika pola penempatan <em>dinding geser</em> serta metode analisanya tepat. Sistem lainnya dalam mengurangi kerusakan bangunan akibat gempa dengan <em>performance based seismic design</em> yaitu dengan menggunakan <em>base isolator.</em>, yang memanfaatkan teknik analisa non-linear berbasis komputer untuk menganalisa perilaku inelastis struktur dari berbagai macam intensitas gerakan tanah (<em>gempa</em>), sehingga dapat diketahui kinerjanya pada kondisi kritis. Tujuan penelitian ini dilakukan untuk mengetahui perioda dalam penggunaan <em>base isolator </em>dengan yang tanpa menggunakan <em>base isolator,</em> pada bangunan sistem ganda, lantai 10 tingkat, bentuk beraturan pada bangunan dinding geser. Analisis data yang dilakukan dengan menggunakan bantuan <em>software </em>komputer <em>SAP2000</em>. Pembebanan pada gedung didasarkan pada peraturan bangunan gedung beton bertulang dan analisa dinamik <em>Time History Modal Analysi</em>s struktur dalam Tata Cara Perencanaan Ketahanan Gempa Untuk Struktur Bangunan Gedung Dan Non Gedung (SNI 1726:2012). Dari hasil penelitian ini dapat diketahui bahwa penggunaan <em>base isolator</em> memperbesar perioda alami. Nilai perioda pada dinding geser dan dinding geser <em>base isolator</em> besarnya berturut-turut 0.988 detik dan 2.465 detik. Hal ini menyebabkan gaya gempa yang bekerja menjadi lebih kecil.

A proposal for the compatibility of static and dynamic seismic base shear provisions of the National Building Code

1982 ◽  
Vol 9 (2) ◽  
pp. 308-312 ◽  
Author(s):  
W. K. Tso
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Masonry Wall ◽  
Building Code ◽  
Frame Structures ◽  
Base Shear ◽  
Significant Discrepancy ◽  
Moment Resisting Frame ◽  
Wall Structures ◽  
Moment Resisting

A comparison is made, based on static and dynamic base shear calculations according to the National Building Code of Canada of 1980, for four types of simple structures, namely, uniform moment resisting frame structures, uniform ductile flexural wall structures, uniform reinforced concrete shear wall structures, and unreinforced masonry wall structures. It is shown that a significant discrepancy exists between the static and dynamic base shear values, depending on the type and the fundamental period of the structure. The causes for the discrepancy and the necessity to make static and dynamic base shears compatible are discussed.

scholarly journals Kajian Perilaku Struktur Portal Beton Bertulang Tipe SRPMK dan Tipe SRPMM

2018 ◽  
Vol 1 (3) ◽  
Author(s):  
Nur Laeli Hajati ◽  
Rizki Noviansyah
Keyword(s):  
Seismic Design ◽  
Structural Systems ◽  
Final Project ◽  
Moment Resisting Frame ◽  
Performance Point ◽  
Earthquake Resistant ◽  
Moment Resisting ◽  
Frame System ◽  
Special Moment Resisting Frame ◽  
The City

ABSTRACTMoment Resisting Frame System (SRPM) is one of the earthquake resistant structural systems that is often used in Indonesia. SRPM is classified into three types are Ordinary Moment Resisting Frame System (SRPMB), Intermediate Moment Resisting Frame System (SRPMM), and Special Moment Resisting Frame System (SRPMK). In this final project, the structure of the building is modeled with SRPMM and SRPMK in areas with high seismicity (Seismic Design Category D) in the city of Yogyakarta, then compared the behavior of the structure between the two models. The result of this research is SRPMM which its purpose for medium earthquake area, can still give good performance which is indicated by fulfillment of design requirement, performance when performance point is in Immadiate Occupancy condition up to Life Safe, and give good ductility value when Collapse occurred.Keywords: intermediate moment resisting frame system, special moment resisting frame system, performance point, ductilityABSTRAKSistem Rangka Pemikul Momen (SRPM) adalah salah satu sistem struktur penahan gempa yang sering digunakan di Indonesia. SRPM dibagi menjadi tiga jenis yaitu Sistem Rangka Pemikul Momen Biasa (SRPMB), Sistem Rangka Pemikul Momen Menengah (SRPMM), dan Sistem Rangka Pemikul Momen Khusus (SRPMK). Dalam tugas akhir ini struktur gedung dimodelkan dengan SRPMM dan SRPMK pada wilayah dengan tingkat kegempaan tinggi (Kategori Desain Seismik D) dikota Yogyakarta, kemudian dibandingkan perilaku struktur antara kedua model tersebut. Hasil dari penelitian ini adalah SRPMM yang peruntukannya untuk wilayah gempa sedang, tetap dapat memberikan kinerja cukup baik yang ditunjukkan dengan terpenuhinya persyaratan-persyaratan desain, kinerja pada saat performance point berada pada kondisi Immadiate Occupancy sampai dengan Life Safe, serta memberikan nilai daktilitas yang baik ketika terjadi keruntuhan.Kata kunci: SRPMM, SRPMK, performance point, daktilitas.

Stiffening of Moment-Resisting Frame by Precast Concrete Cladding

PCI Journal ◽  
1992 ◽  
Vol 37 (5) ◽  
pp. 80-92 ◽  
Author(s):  
Regina Gaiotti ◽  
Bryan Stafford Smith
Keyword(s):  
Precast Concrete ◽  
Moment Resisting Frame ◽  
Moment Resisting
Sign in / Sign up

Export Citation Format

Share Document