Analysis Of The Damaged State Of Members And Study On The Stress Characteristics Of Brackets In Ying Xian Wooden Tower

The wooden tower in ying county,shuozhou city,north China's Shanxi Province,commonly kNown as Yingxian Wooden Tower.Yingxian Wooden Tower and Italy Pisa Leaning Tower.Leaning Tower Eiffel and are kNown as the world's three tower.It is also the oldest and highest pure wood structure of high cultural value in the world.And the practice of Yingxian Wood Tower is fine,artful,the wood structure of the material properties and structural properties of a perfect combination,so Yingxian Wood Tower also has a very high architectural value.Due to the ancient times,different levels of different components of the ancient tower have occurred in different degrees of damage.Due to the tilt,the original symmetrical force of the wooden tower is now very complex,which can be seen from the various cracks on the same type of components.DouGong played a very important role in the complex interior force transmission process.This exploration of the force transmission mechanism of DouGong of the wooden tower is of certain significance to the exploration of the principle of the ancient pagoda not falling for a thousand years,as well as the possible reinforcement measures in the later period.In view of the above the starting point,this paper revolves around the "component force analysis" and "stone power transmission mechanism study" two big contents.This paper mainly carries out the following work:(1)A two-month field survey on the damage of yingxian wooden tower was conducted before and after,mainly for the actual detection of the damage status of the main components of the first layer and the second layer.it mainly tests six categories of indicators: component location,crack length,crack depth,crack width,crack distribution range and location,and component damaged texture.According to this method,the total number of components is more than 2000.(2)Combined with the partial damage morphology and overall inclination characteristics of the wooden tower,the failure forms of the components and the distribution characteristics of the internal forces of the main components were determined.It provides the basic theory reference for the reinforcement scheme of the corresponding type of component in the future.Finally,the damage of all components is graded and presented by BIM model.(3)The model in professor Hou Weidong's book the protection of wooden towers in yingxian county is taken as a reference,and the characteristics of forces and displacements in all directions of DouGong under static load are analyzed in detail,and compared with the conclusion data in the book,so as to illustrate the rationality of the mode.(4)The next part focuses on exploring the transmission mechanism of DouGong.Finally,through the simulation,it can be found that both the stress cloud diagram and the displacement cloud diagram can illustrate that the cooperative stress characteristics of DouGong in the two horizontal directions are very significant under the unilateral horizontal load.Next,vertical load and horizontal load are applied at the same time.It is found that there is a certain influence between vertical load and horizontal load.The existence of vertical load can make horizontal load transfer and disperse more evenly.Finally,el-center wave is applied to DouGong,which indicates that DouGong has good energy under cyclic load.