Research On The Digital Protection Of The Han Dynasty Great Wall Juyansai Beacon Architectural Site

Juyan Hansai was in the glorious period of the development of China ’s border defense history.The construction of border fortress buildings was very prosperous.As a grass-roots post in the border,the beacon tower was a very distinctive building type in the Great Wall system of the Han Dynasty,reflecting the standardization of the border beacon tower system and the waiting organization in the Han Dynasty.The study of beacon towers is of great significance to understand the military system and social system of the border counties in the Han Dynasty.In recent years,the academic circles have achieved fruitful results in the study of the Great Wall,but there are not many studies on the beacon towers from the perspective of architecture.More seriously,the climate environment and human activities have caused more and more serious damage to the beacon towers.Therefore,it is selected as the research topic to explore the shape characteristics of the beacon towers under the beacon fire system.It is about 250 kilometers long and belongs to the Juyan area of Zhangye County in the Han Dynasty.The types include beacon tower barrier and Tiantian plug wall.The ruins are all over the Ejina Banner of Alashan League in Inner Mongolia Autonomous Region and Jinta County of Jiuquan City in Gansu Province,with a wide range,a large number and a rich variety.This paper takes 16 existing beacon towers of the Han Dynasty in Juyan area as the research sample,and studies the strategy of combining architectural archaeology theory with digital surveying and mapping technology.Based on the HanHungarian relations,military strategic position and environmental conditions during the Han Dynasty,this paper summarizes the historical sources and construction factors of Juyan Hansai;secondly,combing the historical literature and the research status of the beacon flint,taking the digital model of surveying and mapping as the starting point,comparing and analyzing the general laws of historical documents and current models,exploring the spatial distribution law of Juyan beacon flint,the architectural form and material construction technology of beacon flint;finally,according to the shape characteristics of Juyan beacon tower,the restoration and deduction practice of the single beacon tower site is carried out and the relevant technical drawings are drawn.The deduction model is objectively and comprehensively displayed to the public through digital means.This paper combines field investigation,data collection and historical data research methods to carry out research.Based on the construction history as the background,the existing good beacon tower architectural sites as the basis,the literature data as the reference clue,the classification summary and the typology comparison method are used to study the shape of Juyan Hansai beacon tower from the architectural point of view,improve the architectural system of the Great Wall waiting organization under the Han Dynasty frontier fortress,and provide a theoretical reference for the restoration of beacon tower buildings in the protection of Juyan Great Site in the future.