Evaluation of Simplified and State-of-the-Art Analysis Procedures for Steel Frame Buildings Equipped with Supplemental Damping Devices Based on E-Defense Full-Scale Shake Table Tests

Akçelyan, Sarven; Lignos, Dimitrios G.; Hikino, Tsuyoshi; Nakashima, Masayoshi

doi:10.1061/(asce)st.1943-541x.0001474

Cited by 54 publications

(23 citation statements)

References 25 publications

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“…A series of tests was conducted in March 2009 [39][40][41][42][43][44][45][46] on a fullscale 5-story steel building equipped with 4 types of dampers ( Figure 10A). After the construction of a 12 9 10 9 16 m (length 9 depth 9 height) steel frame, steel, viscous, oil, and .…”

Section: Steel Building With 4 Types Of Dampermentioning

confidence: 99%

Experiences, accomplishments, lessons, and challenges of E‐defense—Tests using world's largest shaking table

Nakashima

Nagae

Enokida

et al. 2018

Japan Architectural Review

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E‐Defense, which is operated by the Japanese National Research Institute for Earth Science and Disaster Resilience, currently contains the world's largest 3‐dimensional shaking table (size: 20 × 15 m, maximum loading capacity: 12 000 kN). This facility has already implemented over 80 full‐scale or large‐scale experiments since its operation commenced in 2005. During these research activities, E‐Defense has encountered many challenges in the successful execution of various types of experiments within the designed experimental capacity and under the guidance of safe operational management. The experience gained in the past years using E‐Defense has led to the accumulation of knowledge on loading/shaking techniques, measurements for large‐scale specimens, table maintenance and operation, safety management, and specimen construction. This article highlights the major technical issues that have been encountered during the operation of E‐Defense and introduces the solutions that have been achieved. This is followed by brief summaries of some of the major experiments conducted since E‐Defense was commissioned.

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Section: Steel Building With 4 Types Of Dampermentioning

confidence: 99%

Experiences, accomplishments, lessons, and challenges of E‐defense—Tests using world's largest shaking table

Nakashima

Nagae

Enokida

et al. 2018

Japan Architectural Review

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“…As a matter of fact, braces have an upper limit in terms of their stiffness. Considering a finite stiffness of the brace could significantly affect the damper‐brace mechanical behavior . It follows that the ratio between the size of a damper and its supporting brace becomes of crucial importance.…”

Section: Introductionmentioning

confidence: 99%

Minimum‐cost optimization of nonlinear fluid viscous dampers and their supporting members for seismic retrofitting

Pollini

Lavan

2017

Earthq Engng Struct Dyn

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Summary This paper presents an effective approach for achieving minimum‐cost designs for seismic retrofitting using nonlinear fluid viscous dampers. The damping coefficients of the dampers and the stiffness coefficients of the supporting braces are designed by an optimization algorithm. A realistic retrofitting cost function is minimized subject to constraints on inter‐story drifts at the peripheries of frame structures. The cost function accounts for costs related to both the topology and the sizes of the dampers. The behavior of each damper‐brace element is defined by the Maxwell model, where the force–velocity relation of the nonlinear dampers is formulated with a fractional power law. The optimization problem is first posed and solved as a mixed integer problem. For the reduction of the computational effort required in the optimization, the problem is then reformulated with continuous variables only and solved with a gradient‐based algorithm. Material interpolation techniques, which have been successfully applied in topology optimization and in multi‐material optimization, play a key role in achieving practical final design solutions with a reasonable computational effort. Promising results attained for 3‐D irregular frames are presented and discussed. Copyright © 2017 John Wiley & Sons, Ltd.

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“…Each system was modeled by an elastic beam-column element, and a zero-length rotational spring at its end. To model FVD, a horizontal two-node-link element connected to the mass of SDOF system was used, and a ViscousDamper material [31] was assigned to it. This material uses the Maxwell model [32], which consists of a dashpot and an elastic spring element in series.…”

Section: Structural Modeling and Analysismentioning

confidence: 99%

Collapse Capacity Prediction of Sdof Systems Equipped With Fluid Viscous Dampers

Gharyanpoor¹,

Mohebi²,

Yakhchalian³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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There are various types of passive energy dissipation systems that are used in the seismic design of new structures and the seismic rehabilitation of existing structures. One of the most important kinds of passive energy dissipation systems, which reduce both displacements and accelerations simultaneously, are fluid viscous dampers (FVDs). Using FVDs can reduce the seismic response and improve the performance of structures during earthquake excitations and has a significant effect on the damping of structure. In this paper, Single-Degree-of-Freedom (SDOF) systems with different periods and ductility values, equipped with FVDs, are considered. In order to evaluate the collapse capacity of structures with higher precision, P-Δ effects and strength degradation are taken into account in modeling. Incremental dynamic analysis (IDA) is applied to obtain the collapse capacity of the SDOF systems under far-field ground motion records, and finally the results are investigated. It should be mentioned that the results of this study can be extended to Multi-Degree-of-Freedom (MDOF) structures.

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Evaluation of Simplified and State-of-the-Art Analysis Procedures for Steel Frame Buildings Equipped with Supplemental Damping Devices Based on E-Defense Full-Scale Shake Table Tests

Cited by 54 publications

References 25 publications

Experiences, accomplishments, lessons, and challenges of E‐defense—Tests using world's largest shaking table

Experiences, accomplishments, lessons, and challenges of E‐defense—Tests using world's largest shaking table

Minimum‐cost optimization of nonlinear fluid viscous dampers and their supporting members for seismic retrofitting

Collapse Capacity Prediction of Sdof Systems Equipped With Fluid Viscous Dampers

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