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Structural Responses: Single-Degree-of-Freedom (SDOF) Systems

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Abstract

Following the discussions of the working principle and behaviour of the various SMA elements and SMA-based members and devices, it is time to move on to understand how SMA-based structural systems respond to earthquake excitations. A good starting point is to examine the fundamental dynamic responses of single-degree-of-freedom (SDOF) systems with varying parameters that characterise the basic hysteretic behaviour of the structural systems. This chapter starts with a comprehensive seismic evaluation of SDOF systems with a wide spectrum of structural parameters. The primary objective is to quantify the structural and non-structural performances of conventional and novel self-centring systems under both near-fault (NF) and far-field (FF) earthquakes. The analysis involves 5760 different SDOF models with more than 1.45 million statistical response results being processed. According to the available data, two sets of design models that provide the predictions of the inelastic displacement demand and residual displacement response for various systems are given. The results presented in this chapter can form the basis of the performance-based seismic design of SMA-based self-centring structures.

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© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Tongji UniversityShanghaiChina

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