Analysis And Research On The Static And Dynamic Characteristics Of The Wooden Structure Drum Tower In Southeastern Guizhou

The traditional wooden drum tower of Dong nationality is the characteristic ethnic architecture of Qiandongnan Prefecture.On the nasis of absorbing the construction techniques of ancient Chinese architecture,it integrates the aesthetic taste and culture of its own nationality-It has been in the core position of Dong village for thousands of years and has become a beautiful name card of southeast Guizhou region today.With the deepening of the hattle of poverty alleviation driven by culture and tourism,the Drum Tower will be built continuously in southeast Guizhou.However,Qiandongnan Prefecture is located in the mountainous area,and the disturbed airflow in the mountainous wind field will make the buildings in the complex stress state of pressure,bending and twisting he traditional construction technology of drum towers cannot meet the requirements of the increasing construction height,and the safety of drum towers cannot be guaranteed,and collapse accidents happen from time to time.This article is under the background of such research is combined with a kaili actual wood drum wind-induced collapse,use the surplus jianke structure software builds finite element model of the drum tower collapsed,analyzed the static and dynamic characteristics of the drum tower,find out the defects of structure,explains the principle of the inner drum tower collapse,and puts forward to strengthen the measures to improve the security of the structure.The specific wark is as follows:1.Combined with relevant theoretical research on quasi-static tests of mortise and tenon joints,the bending moment and Angle curves of Chinese fir joints were selected,and the semi-hinged parameters of Chinese fir beam-column.joints were determined by iterative method with the help of YJK software,and set in the model,which was used as the basis for subsequent studes.The Drum Tower structure under the action of gravity load and wind load component internal force distribution and strength analysis and calculation.he results show that the structure has enough vertical strength and overall anti-overturning ability,but not enough toresist the accidental eccentric torsion caused by wind load he whole structure will collapse with the torsion damage of the bottom side column.The analysis results are in agreement with the video of the collapse accident record.2.he anti-contimuous collapse performance of the structure is analyzed by using the method of dismantling components.he results show that after the removal of the bottom non-corner side pillar,the ring beam in the remaining structure similar to the side pillar cannnot bear the sudden increase of bending moment,and the failure will occur and lead to the collapse of the whole structure.3.the anti-continuous collapse performance of the structure is anabyed by using the method of dismantling components.The Tesults show that after the removal of the bottom non-corner side pillar,the ring beam in the remaining structure similar to the side pillar can not bear the sudden increase of beinding moment,which causes the chain Teaction and leads to the collapse of the whole structure.4.In view of the problems of the anti-collapse performance of the Drum Tower structure and the inadequacy of the anti-torsion performance of the whole structure,the corresponding structural strengthening measures are put forward Through the method of dismantling the components,it is concluded that the anti-continuous collapse performance of the improved model is improved.Through the elastic time history analysis method and modal decomposition response spectrum method analysis:was improved the torsional rigidity of the structure is improved and the floor displacement and interlayer displacement Angle were less than that of the initial model,structure reinforcement lateral stiffness for improved model improvement is greater than the attached floor shear improvement,the lateral bearing capacity of the structure has been enhanced.Through the correlation analysis of the Drum Tower model,the performance defects of the structure are obtained and the correspondiag improvementmeasures are put forward,which has a certain reference significance for the analysis and research of the Drum Tower structure in the future.