적층 석탑의 내진성능 평가요소
Assessment Factors for Seismic Performance of Multi-block Stone Pagodas
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초록
Recent earthquakes in Korea caused some damages to stone pagodas and thereby awakened the importance of earthquake preparedness. Korean stone pagodas which have been built with very creative style of material use and construction method are worthy of world heritage. Each stone pagoda consists of three parts: top; body; and base. However each tower is uniquely defined by its own features, which makes it more difficult to generalize the seismic assessment method for stone pagodas. This study has focused on qualitative preliminary evaluation of stone pagodas that enables us to compare the relative seismic performance across major aspects among many various Korean pagodas. Specifically an analytical model for multi-block stone pagodas is to be proposed upon the investigation of structural characteristics of stone pagoda and their dynamic behavior. A strategy for seismic evaluation of heritage stone pagodas is to be established and major evaluation factors appropriate for the qualitative evaluation are identified. The evaluation factors for overall seismic resisting behavior of stone pagodas are selected based on the dynamic motions of a rigid block and its limit state. Numerical simulation analysis using discrete element method is performed to analyze the sensitivity of each factor to earthquake and discuss some effects on seismic performance.
Abstract
Recent earthquakes in Korea caused some damages to stone pagodas and thereby awakened the importance of earthquake preparedness. Korean stone pagodas which have been built with very creative style of material use and construction method are worthy of world heritage. Each stone pagoda consists of three parts: top; body; and base. However each tower is uniquely defined by its own features, which makes it more difficult to generalize the seismic assessment method for stone pagodas. This study has focused on qualitative preliminary evaluation of stone pagodas that enables us to compare the relative seismic performance across major aspects among many various Korean pagodas. Specifically an analytical model for multi-block stone pagodas is to be proposed upon the investigation of structural characteristics of stone pagoda and their dynamic behavior. A strategy for seismic evaluation of heritage stone pagodas is to be established and major evaluation factors appropriate for the qualitative evaluation are identified. The evaluation factors for overall seismic resisting behavior of stone pagodas are selected based on the dynamic motions of a rigid block and its limit state. Numerical simulation analysis using discrete element method is performed to analyze the sensitivity of each factor to earthquake and discuss some effects on seismic performance.
참고문헌 (10)
- Attachment 1 Status of Restoration of Damaged Cultural Property, "Cultural Heritage Administration", ~ (2017)
- Attachment 1 Status of Damaged Cultural Property, "Cultural Heritage Administration", ~ (2017)
- Research Report-Safety Evaluation Guideline toward Seismic Hazard Reduction of Cultural Heritage, "Earthquake Engineering Society of Korea", ~ (2012)
- Kim NH, "Seismic Performance Evaluation of Stone Pagodas using Rigid Block Behavior", Proceedings of EESK Conference-Fall (2012)
- Kim NH, "Stability Evaluation of Korean Pagodas under Earthquake Loading", Proceedings of EESK Conference-Spring (2013)
- Hong NH, "Multi-level Evaluation of Stone Pagodas under Earthquake Loading", PROHITEC International Conference – Protection of Historical Buildings by Reversible Mixed Technologies (2014)
- Hong NH, "Parametric Simulation of Multi-level Rigid Blocks under Horizontal Excitations", 16th World Conference on Earthquake Engineering (2017)
- Research Report-Preliminary Seismic Evaluation of Cultural Heritage Building Structures, "Cultural Heritage Administration", ~ (2017)
- Research Report-Structural Condition Assessment of Uiseongtapri-5 story pagoda, "Cultural Heritage Administration", ~ (2015)
- Housner G, "The behavior of inverted pendulum structures during earthquakes", Bulletin of the Seismological Society of America, 53(2), pp.403~417 (1963)