An innovative base isolation system with Ni–Ti alloy and its application in seismic vibration control of Izadkhast Bridge

Khodaverdian, Alireza; Ghorbani‐Tanha, Amir K.; Rahimian, M.

doi:10.1177/1045389x12440748

Cited by 11 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Owing to these important features, hybrid control systems have become very promising for seismic response reduction of civil engineering structures. More information about the merits of hybrid control systems and recent applications can be found in Khodaverdian et al (2012) and Love et al (2011). Typical hybrid control systems are shown below, and will be analyzed in the following.…”

Section: Hybrid Control Devicesmentioning

confidence: 99%

A state-of-the-art review of structural control systems

Saaed

Nikolakopoulos

Jonasson

et al. 2013

Journal of Vibration and Control

218

View full text Add to dashboard Cite

The utilization of structural control systems for alleviating the responses of civil engineering structures, under the effects of different kinds of dynamics loadings, has become a standard technology, although there are still numerous research approaches for advancing the effectiveness of these methodologies. The aim of this article is to review the state-of-the-art technologies in structural control systems by introducing a general literature review for all types of vibrations control systems that have appeared up to now. These systems can be classified into four main groups: (a) passive; (b) semi-active; (c) active; and (d) hybrid systems, based on their operational mechanisms. A brief description of each of these main groups and their subgroups, with their corresponding advantages and disadvantages, is also given. This article will conclude by providing an overview of some innovative practical implementations of devices that are able to demonstrate the potential and future direction of structural control systems in civil engineering.

show abstract

Section: Hybrid Control Devicesmentioning

confidence: 99%

A state-of-the-art review of structural control systems

Saaed

Nikolakopoulos

Jonasson

et al. 2013

Journal of Vibration and Control

218

View full text Add to dashboard Cite

show abstract

“…Such attachments are made on both sides of the rubber bearing, so that one side remains effective (in tension) while subjected to cyclic loading. The use of superelastic SMA springs or merely the SMA bars has also been proposed. However, in most of these alternative configurations, the SMA component is subjected to axial forcing cycle as the isolation bearing goes under cyclic loading from the excitations from the seismic events.…”

Section: Shape‐memory‐alloy Rubber Bearing Configuration Force‐deformentioning

confidence: 99%

Stochastic optimization of shape-memory-alloy rubber bearing (SMARB) for isolating buildings against random earthquake

Gur

Mishra

Chakraborty

2014

Struct. Control Health Monit.

View full text Add to dashboard Cite

SUMMARY Shape‐memory‐alloy (SMA) aided isolation bearing has been proposed recently in order to achieve improved performances in several aspects, comparing the traditional bearings for isolation. The behavior of such system has been experimentally demonstrated and numerically simulated under recorded seismic ground motions. The present work deals with the study of optimum performance of SMA‐based isolation system under random earthquake. The stochastic response evaluation of the isolated building is performed by nonlinear random vibration analysis via stochastic linearization of load‐deformation hysteresis of SMA. The behavior of the stochastic responses indicates the existence of optimal value of transformation strength of SMA to minimize the superstructure acceleration and thereby most efficient isolation. Thus, a stochastic structural optimization problem is taken up in order to obtain the optimal transformation strength. A closed form expression of such optimal parameters are also presented, which may be used for establishing an initial design. The viability of the optimization study is justified by analyzing the response of the optimal system under set of real earthquake ground motion records. The stochastic response behavior of the optimal system is found to be consistent with the responses obtained under real earthquake motions. Copyright © 2014 John Wiley & Sons, Ltd.

show abstract

“…Various base-isolation systems and energy dissipation devices employ the SMA superelasticity to enhance their capabilities. Khodaverdian et al 1 present their base isolation system based on sliding bearings equipped with shape memory alloy. Kumbhar et al 2 integrate the SMA with magnetorheological elastomer into a tuned vibration absorber system.…”

Section: Introductionmentioning

confidence: 99%

Optimization of inelastic multistory structures under seismic vibrations using shape-memory-alloy material

Shmerling

Gerdts

2022

Sci Rep

View full text Add to dashboard Cite

This paper develops a novel optimization methodology for designing Shape-memory-alloy resisting devices (SMARDs) and optimally allocating them to inelastic multistory structures. The solution algorithm is a control gains optimization procedure that refers to a formal optimization problem with an objective function subject to the state-space equation and design limitations. The objective function integrates the squared state components in time, and the state-space equation consists of a newly introduced state vector form that reflects the system's inelasticity. The control gains are the number of total Shape-memory-alloy (SMA) wires attached to the devices in each story, and the design limitations dictate the minimum/maximum number of wires. The solution algorithm consists of five iterative steps that employ the defined Hamiltonian gradients in state and gains and cater to the necessary optimality conditions. The numerical example deals with upgrading an eight-story shear-type frame system. It studies the algorithm efficiency and elaborates on the effect of the optimal weighting matrix by investigating three different configurations. In all cases, the algorithm improves the system's inelastic seismic response—showcasing the reliability of the developed design methodology and the utilization of SMA material.

show abstract

An innovative base isolation system with Ni–Ti alloy and its application in seismic vibration control of Izadkhast Bridge

Cited by 11 publications

References 12 publications

A state-of-the-art review of structural control systems

A state-of-the-art review of structural control systems

Stochastic optimization of shape-memory-alloy rubber bearing (SMARB) for isolating buildings against random earthquake

Optimization of inelastic multistory structures under seismic vibrations using shape-memory-alloy material

Contact Info

Product

Resources

About