준정적 실험을 통한 모듈러 ICH RC 기둥의 거동평가 KCI

Title
준정적 실험을 통한 모듈러 ICH RC 기둥의 거동평가
Alternative Title
Behavioral Evaluation of Modular ICH RC Columns through Quasi-Static Cyclic Tests
Author(s)
Kim, Sungwon; Hong, Hyemin; Han, Taek Hee
KIOST Author(s)
Kim, Sung Won(김성원)Han, Taek Hee(한택희)
Publication Year
2020-06
Abstract
Owing to the recent expansion in sizes of wind turbines, the required height for the wind turbine tower is increasing. Therefore, new types of structures are needed to fulfill this requirement. In this study, a modular Internally Confined Hollow Reinforced Concrete (ICH RC) column was suggested for a wind power tower, and quasi-static test was performed to evaluate its bending performance. One single body specimen (SP-S) and two modular specimens (SP-MP, SP-MF) applying different connection methods were fabricated. The specimens were designed and manufactured while considering the numerical analysis and conditions of the testing laboratory. The test was conducted by controlling the displacement according to the drift ratio. The experimental results of moments, lateral loads, displacements, dissipation energy, ductility, etc. for each specimen were compared with those of numerical modeling. Consequently, plastic hinges were found at the bottom of the column and connection part for SP-S and modular specimens, respectively, which is due to the rigidity change at the connection of the modular specimens. Therefore, the result of energy dissipation was 40% higher in the case of the modular specimens than that of SP-S whereas the lateral force and moment in the case of the modular specimens were smaller than those of SP-S. In terms of displacement and energy ductility, modular specimens exhibited 50% higher results than those of SP-S. For the future work, it is necessary to enhance the performance of the connection part to apply the modular ICH RC structure to a wind turbine tower.
ISSN
1738-2424
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/20972
DOI
10.9798/kosham.2020.20.3.203
Bibliographic Citation
한국방재학회논문집, v.20, no.3, pp.203 - 213, 2020
Publisher
한국방재학회
Keywords
Column, Modular, Quasi-static Test, Internally Confined, ICH RC; 기둥, 모듈, 준정적 실험, 내부구속
Type
Article
Language
Korean
Publisher
한국방재학회
Related Researcher
Research Interests

Ocean Engineering,Structural Engineering,Renewable Energy,해양공학,구조공학,신재생에너지

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