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삼축압축을 받는 콘크리트의 구속압과 팽창각의 관계에 대한 연구Exploring the Relationship Between Confining Pressure and Concrete Dilation Angle Under Triaxial Compression

Other Titles
Exploring the Relationship Between Confining Pressure and Concrete Dilation Angle Under Triaxial Compression
Authors
박상현이문석석승욱배백일최현기최창식
Issue Date
Aug-2024
Publisher
대한건축학회
Keywords
팽창각; 콘크리트; 유한요소해석; Dilation Angle; Concrete; Finite Element Analysis
Citation
대한건축학회논문집, v.40, no.8, pp 211 - 218
Pages
8
Indexed
SCOPUS
KCI
Journal Title
대한건축학회논문집
Volume
40
Number
8
Start Page
211
End Page
218
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/202219
DOI
10.5659/JAIK.2024.40.8.211
ISSN
2733-6239
2733-6247
Abstract
본 연구는 전 소성 영역에 걸쳐 변화하는 팽창각의 경향을 분석하는 데에 있다. 이에 본 연구에서는 선행 연구에서 수행한 삼축압축실험 데이터를 수집하여 구속압이 변할 때 콘크리트의 팽창 특성을 분석하였다. 이를 통해 콘크리트에 가해지는 구속압과 팽창각 사이의 관계를 파악하였고, 이러한 변화는 소성 변형률과 구속압을 변수로 설명하였다. 변화하는 팽창각은 실험 데이터와의 비교를 통해 그 타당성을 검증하였다. 이 모델은 콘크리트의 구속압 변화에 따른 팽창각을 반영하였기에, 더 정확한 유한요소해석의 결과값을 낼 것이라고 기대한다.
This study analyzes the dilation angle characteristics of concrete under triaxial compression with varying confining pressures and aims to develop a model that reflects volumetric deformation characteristics to improve the accuracy of finite element analysis. The dilation angle is a key factor in reflecting the volumetric deformation of concrete, which varies with confining pressure. This study collected 30 triaxial compression tests from six different papers to analyze how concrete expands as confining pressure changes. It identified the relationship between confining pressure, the dilation angle, and variables such as increasing plastic axial strain. Additionally, the study examined the limitations of existing concrete material models and derived trends that better reflect concrete's actual volumetric deformation by incorporating a variable dilation angle. This model is expected to enhance the accuracy of finite element analysis by accounting for changes in confinement pressure. The research aims to contribute to architecture by providing more precise and reliable information for the analysis and evaluation of structures.
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