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Title: Fragility Function Development and Seismic Loss Assessment of Expansion Joints
Authors: Otsuki, Yu
Kurata, Masahiro
Skalomenos, Konstantinos
Ikeda, Yoshiki  kyouindb  KAKEN_id  orcid (unconfirmed)
Akazawa, Motoki
Author's alias: 倉田, 真宏
池田, 芳樹
Keywords: Expansion joints
non-structural components
fragility function
relative displacement
adjacent buildings
Issue Date: 25-Jul-2019
Publisher: Wiley
Journal title: Earthquake Engineering & Structural Dynamics
Volume: 48
Issue: 9
Start page: 1007
End page: 1029
Abstract: xpansion joints are used as a special connection equipment between adjacent buildings to accommodate the relative motions generated by wind, thermal, or earthquake loads, but they often exhibit damage during severe earthquakes. The level of damage and safety factors required to avoid loss of function are not well considered in current design practices. The objective of this paper is to provide quantitative information on the seismic damage probability of common expansion joints and the associated repair costs. The designer and engineer can refer to this information as a basis for decision making in the selection of expansion joints. Four common types of expansion joints are considered: high‐ and standard‐performance floor and wall expansion joints, whose damage states have been evaluated recently by the authors through shaking table tests. First, the fragility functions of expansion joints for seven damage patterns are developed utilizing the test results. Next, the vulnerability of expansion joints installed between adjacent building models is assessed via incremental dynamic analysis. The recommended level of safety factor to ensure the function of expansion joints is discussed. Finally, a procedure for cost‐effective selection of expansion joints is introduced, where case studies are examined using buildings with different characteristics. The presented results are deemed to be beneficial for improving the design practice of expansion joints and for reducing future seismic loss.
Rights: This is the peer reviewed version of the following article: [Earthquake Engineering & Structural Dynamics, 48(9) 1007-1029], which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
The full-text file will be made open to the public on 07 June 2020 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1002/eqe.3171
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