[ Article ]

Journal of Korean Society of Steel Construction - Vol. 36, No. 6, pp.333-344

ISSN: 1226-363X (Print) 2287-4054 (Online)

Print publication date 27 Dec 2024

Received 02 Oct 2024 Revised 25 Nov 2024 Accepted 26 Nov 2024

DOI: https://doi.org/10.7781/kjoss.2024.36.6.333

일정진폭 하중하에 변폭 스트럿을 갖는 강재슬릿댐퍼의 구조성능에 관한 실험적 연구

김유진¹ ; 김태수²^{, *}

1석사과정, 한양대학교 대학원, 건축시스템공학과
2교수, 한양대학교 ERICA, 건축학부 건축공학전공

An Experimental Study on the Structural Performance of Steel Slit Dampers with Varied Strut Width under Constant Amplitude Loading Protocol

Kim, YuJin¹ ; Kim, TaeSoo²^{, *}

1Graduate Student(Master’s Course), Department of Architectural Engineering, Hanyang University, Seoul, 04763, Korea
2Professor, School of Architecture & Architectural Engineering, Hanyang University ERICA, Ansan, 15588, Korea

Correspondence to: ^*Tel. +31-400-5131 E-mail. tskim0709@hanyang.ac.kr

초록

이 연구는 다양한 스트럿폭을 가진 강재슬릿댐퍼를 대상으로 동변위 반복가력실험을 수행하여 강재슬릿댐퍼의 구조성능을 확인하는 것을 목적으로 한다. 총 9개의 실험체는 일반구조용 압연강재로 제작하였으며, 스트럿폭과 하중프로토콜을 변수로 설정하였다. 하중프로토콜은 전단변형각(3 %, 5 %, 7 %)에 대한 동변위 반복가력으로 구성하여 실험을 수행하였다. 실험결과, 실험체는 전단변형각이 증가함에 따라 최대내력 도달 후 90 % 시점까지의 총 싸이클수는 평균 1/2정도로 감소하는 경향을 보였다. 최대 스트럿폭이 50 mm미만인 실험체는 최대 스트럿폭이 100 mm인 실험체보다 초기강성 및 최대내력은 낮았으나, 에너지흡수능력이 높았다. 스트럿폭이 100 mm인 실험체가 다른 실험체보다 조기에 전단균열 및 파단이 진행되어 내력저하가 빠르게 나타났기 때문이다. 스트럿폭의 배치는 댐퍼의 구조성능에 영향을 주는 중요한 변수임을 확인하였다.

Abstract

In this study, steel slit dampers with various strut widths were subjected to cyclic tests with constant displacement amplitude loading protocol to investigate their structural performance. A total of nine specimens were fabricated using general structural rolled steel, with varied strut widths and loading protocols. Three cyclic loading protocols consisted of shear deformation angles of 3 %, 5 %, and 7 %. Experimental results indicated that as the shear deformation angle increased, the total number of cycles to reach 90 % of the maximum load decreased to an average of about half. Specimens with a maximum strut width of less than 50mm exhibited lower initial stiffness and maximum load compared to those with a maximum strut width of 100 mm, however, they demonstrated higher energy absorption capacity. This is because the specimen with a strut width of 100 mm experienced shear cracking and failure at an earlier stage, leading to a quicker reduction in strength. The arrangement of strut widths was confirmed to be a significant varied influencing the structural performance of the damper.

Keywords:

Steel, Structure, Steel slit damper, Constant amplitude deformation, Cyclic loading, Strut width, Energy dissipation

키워드:

강재슬릿댐퍼, 동폭변위, 반복하중, 스트럿폭, 에너지소산

Acknowledgments

본 연구는 2022년 한국연구재단 대학 창의적 자산 실용화지원(BRIDGE+)사업과 2024년도 정부(과학기술정보통신부)의 재원으로 한국연구재단의 이공분야기초 연구지원사업(과제번호 No. RS-2024-00346347)의 연구비와 지원에 의해 수행된 연구결과의 일부임.

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