忠淸地域 百濟土城의 축조양상

The Construction Aspects of Baekje Earthen Walled Citadels and Fortresses in Choongchung Province. Korea

The construction techniques shown in the Baekje walls in the Choongchung Province are characterized by the periods through dating data and historical documents on the excavated artifacts and archaeological remains. The major periods are Hansung Period, Woongjin Period(475-538A.D.), and Sabie Period. The first earthen wall constructed in the Hansung Period is Jungbookdongtosung. In the Woongjin Period, Kongsansung were constructed, and in the Sabie Period, Pusosansung and Dongnasung were constructed in that order. As for the phases of change around the Baekje walls by the periods, the Woongjin Period produced earthen walls without stones at their lowest sides and stones began to appear at the lowest side in the Sabie Period. It seems that there was no stone at the lowest side in the early Sabie Period but they began to be put in some sections during reconstruction at a certain point of time. The following is an outline for restoring the constructional techniques applied to the Baekje earthen walls in the Choongchung Province: Use clay and sandy soil derived from the ditch as chief materials. First, make the clay hard and make foundation layers with it as broad as or broader than the width of wall in the plan. Next, arrange logs for pillar into the central wall. Again arrange logs for pillar outside the area planned for inside assistant wall and pile up clay and sandy soil inside the logs alternately on the support of central wall. The inside assistant wall is relatively less solid than the central wall and the outer lowest part of it was built into the accumulation of gravels to supplement the earthen parts. And finally, arrange another logs for pillar outside the area planned for outside assistant wall and also pile up clay and sandy soil inside the logs alternately on the support of central wall. The outside assistant wall isn't so strong compared with central and inside assistant walls that layer gravels was used for the outer lowest part to supplement the earthen parts.