Seismic performance of eccentrically braced frame with vertical link using PBPD method

Abstract

There are special guidelines to design the structures resistant to earthquake forces; parameters such as conditions of the site, seismicity of the site, importance of the structure and the type of the structure are the main effective factors. Consideration of these parameters in calculation and distribution of the earthquake forces are significantly different in various design codes. In most of these design codes, the computation and distribution of earthquake forces are based upon the elastic structural analysis. In this approach, the real behavior of structure is not considered and it may consequently sustain big displacements and irretrievable damages. Therefore, a new design method has been utilized in this paper by which the base shear and its distribution in the height of the structure are calculated according to the plastic behavior of structure and takes advantage of energy balance. The latter is known as performance-based plastic design method. The study of the behavior of eccentrically braced frames with vertical links while undertaking earthquake loads using performance-based plastic design method is the main purpose of this study. It is also worthy of notion that the frames are designed using a capacity design method. In addition, the results are compared with those of the International Building Code 2009 method; the results demonstrate that the plastic hinges, the interstory drifts and plastic rotation of links are distributed more uniformly in the height of frames designed by the suggested method compared to International Building Code 2009.

Analisis Performa Eccentrically Braced Frames (EBF) Vertikal Link Menggunakan Wide Flange (WF) Link

“…Penelitian yang dilakukan oleh Shayanfar dkk. [6] menunjukkan bahwa Eccentrically Braced Frames dengan link vertikal (V-EBF) mempunyai kelebihan dari sistem H-EBF, antara lain pada daktilitas, kekuatan elastis yang tinggi, fungsionalitas sebagai sistem fuse yang daktail, dan keefektifan dalam proses bongkar pasang pasca terjadi kerusakan tanpa mengganggu elemen struktur lainnya. Penggunaan link vertikal, dimensi penampang link dapat didesain dengan fleksibel tanpa harus memiliki dimensi dan profil penampang yang sama dengan balok.…”

Response modification factors for dual moment-resisting frames with vertical links: Multilevel approach

“…Different studies have been performed on the performance assessment and design of structures with vertical and horizontal shear links. Shayanfar et al (2014) studied the seismic performance of eccentrically braced frames equipped with vertical shear links using the performance-based plastic design concept. Subsequently, Bouwkamp et al (2016) developed an analytical model to simulate the nonlinear inelastic response of eccentric braces with vertical shear links.…”

Experimentally and analytically study on eccentrically braced frame with vertical shear links

“…Therefore, the use of horizontal link beams is not convenient. To overcome the problems in the EBF system, a new system called the vertical‐EBF (V‐EBF) system was proposed …”