조선시대 평택 궁리유적 회곽묘의물성평가 및 강도해석
Evaluation of Physical Properties and Strength Interpretation for Lime‐Soil Mixture on Barrier Tomb of Pyeongtaek Gungri Site in Joseon Dynasty
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참고문헌
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초록
회곽묘는 조선시대의 대표적인 묘제로서 당시 사회와 장례문화 이해에 중요한 자료이다. 궁리유적에서 발굴한회곽묘를 제작방식에 따라 분류하여 초음파속도와 반발경도 측정을 통해 물성을 평가하였다. 층벽식으로 제작한 회곽묘의 강도는 측정방법에 따라 차이가 있다. 초음파속도와 반발경도를 통해 산출한 층벽식 회곽묘의 압축강도는 각각4.0∼355(평균 43.6) kgf/cm2 및 18.8∼538(평균 245.2) kgf/cm2의 범위를 보였다. 이 회곽묘는 발굴과 이장과정에서벽체에 충격이 발생한 상태로, 벽체의 고유물성에 비해 낮은 초음파속도가 산출된 것으로 보인다. 반면 통벽식으로제작한 회곽묘의 압축강도는 초음파속도 및 반발경도 측정방법에 따라 각각 5.7∼793(평균 281.6) kgf/cm2와 4.5∼551(평균 172.4) kgf/cm2로 나타났다. 이처럼 압축강도 값의 차이는 있지만 경향성이 유사한 것으로 보아, 초음파속도와반발경도 측정을 통한 물성평가는 통벽식 회곽묘에서 더욱 효과적인 것으로 판단된다. 또한 측정면적이 작은 반발경도법이 초음파법보다 더욱 일정한 강도를 보였다.
Abstract
The lime-soil mixture on barrier (LSMB) tomb is a representative type of tomb from the Joseon Dynasty. It is an important reference for understanding the society and funeral culture of that time. The LSMB excavated at theGungri site were classified with manufacturing type. The ultrasonic velocity and rebound hardness method were usedto estimate the physical properties of the LSMB. The strength values on the tomb of layered wall were different dependon measuring method. The compressive strengths of the tomb with layered wall, which is calculated by ultrasonic velocityand rebound hardness ranged from 4.0 to 355 (mean 43.6) kgf/cm2 and 18.8 to 538 (mean 245.2) kgf/cm2 ranges. Thedamage to the tomb with integrated wall during excavation and removal of the corpse could be a reason for the differencein results obtained using ultrasonic velocity method. Compressive strengths of tombs with integrated wall, which iscalculated by ultrasonic velocity and rebound hardness ranged from 5.7 to 793 (mean 281.6) kgf/cm2 and 4.5 to 550.5(mean 172.4) kgf/cm2 values. Physical properties on the tombs of integrated wall had different in compressive strengthvalue but showed similar tendency. Thus, evaluation of the physical properties has shown that measuring ultrasonic velocity and rebound hardness methods are more effective in the LSMB with integrated walls. Further, the strength values obtainedthrough the rebound hardness method are more constant than those obtained through the ultrasonic method due to thesmall detection area required by the former.
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