Experimental analysis of seismic resistant composite steel frames with dissipative devices

“…Gray et al [16] developed a novel cast steel yielding brace system able to enhance the seismic performance of braced frames and to limit damage to replaceable structural elements. Replaceable nonlinear links in steel MRFs and eccentrically braced frames were proposed by Shen et al [17] and Mansour et al [18] respectively, while replaceable welded or bolted plates were used in composite MRFs by Castiglioni et al [19].…”

Section: And Uangmentioning

confidence: 99%

Dual seismic-resistant steel frame with high post-yield stiffness energy-dissipative braces for residual drift reduction

Baiguera

Vasdravellis

Karavasilis

2016

Journal of Constructional Steel Research

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Keywords: Dual seismic-resistant steel frame; low-damage steel frame; residual drift mitigation; energy-dissipative brace; replaceable fuse; nonlinear finite element analysis. Abstract.A dual seismic-resistant steel frame, which consists of a moment-resisting frame equipped with high post-yield stiffness energy-dissipative braces, is proposed and numerically evaluated. Replaceable hourglass shape pins made of duplex stainless steel with high postyield stiffness and large energy dissipation and fracture capacity are in series connected to conventional steel braces. Moreover, replaceable fuses are introduced in the beams at the locations where plastic hinges are expected to develop. A performance-based seismic design procedure and appropriate capacity design rules are used to design the dual frame, while its seismic performance is evaluated with advanced numerical simulations using experimentally validated shell-solid finite element models and simplified beam element models. The numerical results show that the dual frame has adequate stiffness and energy dissipation capacity to control peak storey drifts (i.e. non-structural damage), while plastic deformations (i.e. structural damage) are isolated within the replaceable pins of the braces and the beam fuses. In addition, the high post-yield stiffness of the pins, combined with the appreciable elastic deformation capacity of the moment-resisting frame, results in significant reduction of residual storey drifts, which are found to have a mean value of 0.06% under the design earthquake and a mean value of 0.12% under the maximum considered earthquake. These values indicate a superior residual storey drift performance compared to steel frames equipped with buckling restrained braces, and highlight the potential of the proposed dual frame to help steel buildings to return to service within an acceptable short time in the aftermath of a strong earthquake.2

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“…The first device type (fuseis 1) is used as a dissipative "shear wall" [3], whereas the second device type (fuseis 2) resembles "replaceable plastic hinges" for moment resisting frames [4]. Both systems aim at controlling and concentrating inelastic deformations in the "fuse devices", without imposing significant damage in the rest of the structure (steel columns and beams, concrete slab).…”

Section: Introductionmentioning

confidence: 99%

“…Behaviour of these fuse devices was studied numerically and experimentally during the FUSEIS research project, and the results have been published in several articles [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Performance of Multi-Storey Composite Steel-Concrete Frames With Dissipative Fuse Devices

Kanyilmaz¹,

Castiglioni²

2015

Proceedings of the 5th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Experimental analysis of seismic resistant composite steel frames with dissipative devices

Cited by 77 publications

References 6 publications

A Procedure for the Assessment of the Behaviour Factor for Steel MRF Systems Based on Pushover Analysis

A Procedure for the Assessment of the Behaviour Factor for Steel MRF Systems Based on Pushover Analysis

Dual seismic-resistant steel frame with high post-yield stiffness energy-dissipative braces for residual drift reduction

Performance of Multi-Storey Composite Steel-Concrete Frames With Dissipative Fuse Devices

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