가압고정 기계적이음을 활용한 프리캐스트 콘크리트 구조물의 준정적 및 진동대 실험
Quasi-Static and Shaking Table Tests of Precast Concrete Structures Utilizing Clamped Mechanical Splice
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초록
A new clamped mechanical splice system was proposed to develop structural performance and constructability for precast concrete connections. The proposed mechanical splice resists external loading immediately after the engagement. The mechanical splices applicable for both large-scale rebars for plants and small-scale rebars for buildings were developed with the same design concept. Quasi-static lateral cyclic loading tests were conducted with reinforced and precast concrete members to verify the seismic performance. Also, shaking table tests with three types of seismic wave excitation, 1) random wave with white noise, 2) the 2016 Gyeongju earthquake, and 3) the 1999 Chi-Chi earthquake, were conducted to confirm the dynamic performance. All tests were performed with real-scale concrete specimens. Sensors measured the lateral load, acceleration, displacement, crack pattern, and secant system stiffness, and energy dissipation was determined by lateral load-displacement relation. As a result, the precast specimen provided the emulative performance with RC. In the shaking table tests, PC frames’ maximum acceleration and displacement response were amplified 1.57 - 2.85 and 2.20 - 2.92 times compared to the ground motions. The precast specimens utilizing clamped mechanical splice showed ductile behavior with energy dissipation capacity against strong motion earthquakes.
Abstract
A new clamped mechanical splice system was proposed to develop structural performance and constructability for precast concrete connections. The proposed mechanical splice resists external loading immediately after the engagement. The mechanical splices applicable for both large-scale rebars for plants and small-scale rebars for buildings were developed with the same design concept. Quasi-static lateral cyclic loading tests were conducted with reinforced and precast concrete members to verify the seismic performance. Also, shaking table tests with three types of seismic wave excitation, 1) random wave with white noise, 2) the 2016 Gyeongju earthquake, and 3) the 1999 Chi-Chi earthquake, were conducted to confirm the dynamic performance. All tests were performed with real-scale concrete specimens. Sensors measured the lateral load, acceleration, displacement, crack pattern, and secant system stiffness, and energy dissipation was determined by lateral load-displacement relation. As a result, the precast specimen provided the emulative performance with RC. In the shaking table tests, PC frames’ maximum acceleration and displacement response were amplified 1.57 - 2.85 and 2.20 - 2.92 times compared to the ground motions. The precast specimens utilizing clamped mechanical splice showed ductile behavior with energy dissipation capacity against strong motion earthquakes.
참고문헌 (17)
- Precast Concrete Market Size, Share &Trends Analysis Report by Product, by End-use, by Region, and Segment Forecasts, "Grand View Research Inc", Grand View Research Inc, 80~ (2021)
- Korea Concrete Institute, "Structural Design of Precast Concrete Buildings (KCI PM108.1-22)", pp.300~ (2022), Kimoondang Publishing Company
- ACI, "Types of Mechanical Splices for Reinforcing Bars (ACI 439.3-07)", American Concrete Institute, 20~ (2007)
- Haber ZB, "Seismic Performance of Precast Columns with Mechanically Spliced Column-Footing Connections", ACI Struct J, 111(3), pp.639~650 (2014)
- Tullini N, "Grouted Sleeve Connections used in Precast Reinforced Concrete Construction – Experimental Investigation of a Column-to-Column Joint", Eng Struct, 127, pp.784~803 (2016)
- Ameli MJ, "Seismic Columnto-Footing Connections using Grouted Splice Sleeves", ACI Struct J, 113(5), pp.1021~1030 (2016)
- 강수민, "소성힌지 영역의 접합부를 개선한 PC 구조벽체의 개발", 한국지진공학회논문집, 14(2), pp.15~26 (2010), 한국지진공학회
- "ACI Committee 374. ACI 374.2-13 Guide for Testing Reinforced Concrete S tructural Elements under S lowly Applied Simulated Seismic Loads", American Concrete Institute, 18~ (2013)
- MOLIT, "Design Standard of Development and Splices of Reinforcing Bar for Concrete Structure (KDS 14 20 52)", Ministry of Land, Infrastructure and Transport, 18~ (2022)
- MOLIT, "Seismic Design Standard for Concrete Structures (KDS 1420 80)", Ministry of Land, Infrastructure and Transport, 24~ (2021)
- "Joint ACI-ASCE Committee 352. Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures (ACI 352R-02)", American Concrete Institute, 38~ (2002)
- AIK, "Korean Building Code-Structral (2016)", Architectural Institute of Korea, 878~ (2016)
- 노화성, "구조물의 동적 고유특성을 이용한 새로운 집중질량모델 개발", 한국지진공학회논문집, 16(4), pp.19~26 (2012), 한국지진공학회[DOI]
- "ACI Committee 374, Acceptance Criteria for Moment Frames based on structural testing and commentary (ACI 374.1-05)", American Concrete Institute, 9~ (2005)
- Newmark NM, "Earthquake Spectra and Design", pp.35~ (1982), Earthquake Engineering Research Institute
- Chopra AK, "Dynamics of Structures: Theory and Applications to Earthquake Engineering", pp.992~ (2016), Pearson
- 이동주, "볼트 접합 및 프리스트레스를 적용한 프리캐스트 콘크리트 보-기둥 외부접합부의 내진실험", 콘크리트학회 논문집, 26(2), pp.125~133 (2014), 한국콘크리트학회[DOI]