Seismic Performance Analysis And Reinforcement Technology Research On The Ancient City Wall Of The Wanquan

Wanquan ancient city wall is located in hebei zhangjiakou district,ancient city wall was built in the Ming dynasty,has a long history and culture value.Wanquan ancient city wall as the research object,this paper from the site survey,geological survey,the finite element simulation analysis and strengthening maintenance and so on several aspects to study and analysis,for the solution of ancient city wall repair engineering provides scientific resources.In this paper,first of all to conduct a comprehensive detailed field investigation of wanquan ancient city wall,the damage situation of wall were analyzed.Secondly,to the foundation ancient city wall to sampling analysis;Then the numerical simulation analysis was carried out on the ancient city wall,it is concluded that the current structure of ancient city wall;Finally,put forward the method of using built-in frame structure reinforcement for solution to reinforce to protect the ancient city walls,and the strengthening of ancient city wall with finite element analysis of the reinforcement effect.Thesis mainly the following results were obtained:(1)Using 3 d laser scanner,obtained the most comprehensive detailed data of wanquan ancient city wall;(2)Characteristics of the ancient city wall foundation properties was tested and the related data were obtained;(3)Through the finite element analysis software,to the ancient city wall stability analysis,modal analysis,response spectrum analysis and seismic response analysis,draw solution parameters of the intrinsic characteristics of ancient city wall and response under the seismic response;(4)In this paper,the scheme of built-in frame structure reinforcement of the ancient city wall,and the finite element simulation analysis,it is concluded that the built-in concrete frame structure can not only play a bearing tower weight,to improve the bearing capacity of ancient city wall,at the same time can reduce the ancient city wall arch stress weak situation,to prevent the ancient city wall arch and wall cracks expanding phenomenon,strengthen the integrity and stability of the ancient city wall.