平城宮第一次大極殿前庭のデザインとその思想

抄録

The earthen wall with brick tiles on the Former Imperial Audience Hall of State Compound in Nara Imperial Palace has incomprehensible outlines.
After the examination of the method of the plan, I found that the starting points and the infrection points of the earthen wall were situated at a point of intersection of three concentric circles and the eccentric circle. This structure is similar to the astronomical chart of mural of Kitora Tomb.
Three concentric circles and the eccentric circle are severally equivalent to Zone of Perpetual Apparition, equator, Zone of Perpetual Occultation and ecliptic. Besides the situation of the Imperial throne, the center of the Audience Hall, the well in the front yard are respectively equivalent to the north pole, the polestar, one of constellations on the ecliptic.
According to the ancient thought in China, the designer of the Former Imperial Audience Hall of State Compound had the design concept that the layout of establishment in the area indicatedimitate the cosmos.