Structural Analysis And Seismic Performance Study On The Great Buddha Hall Of Huishan Temple

Huishan Temple,Shaolin Temple,Fawang Temple and Songyue Temple are also known as the four famous temples of Henan Songsan.The temple is first built in the Northern Wei Dynasty,It has a history of more than a thousand years and is one of the earliest Buddhist temples established after Buddhism is introduced to China.Although the dynasties have continued to expand maintenance,the architecture and structure of Huishan Temple still retain the characteristics of the beginning of construction.It is an important historical object to study the evolution of ancient Chinese architectural style.Huishan Temple is established by the State Council as the fifth batch of national key cultural relics protection units in 2001.In 2010,it is included in the World Heritage List by UNESCO as one of the historical buildings in the “Heaven and Earth”.The Great Buddha Hall is the main building of Huishan Temple.It is originally built in the Yuan Dynasty and has a history of more than 700 years.It is a large-scale stone-framed building of the Yuan Dynasty that is currently left in China.Its layout is based on the popular pillars of the Yuan Dynasty.The stone-wood column mixed loadbearing practices have unique historical and scientific value.At present,the research on the Great Buddha Hall of Huishan Temple is mostly concentrated on the architectural form and cultural characteristics.The research on the influence law of the reduction of column and stone-column mixed load on the structural deformation of the structure is rarely involved,especially the earthquake of this kind of building under the action of earthquake.Seismic performance research has been in the blank.In order to strengthen the protection and inheritance of the Great Hall of the Huishan Temple,Zhengzhou World Heritage Center started < "The status quo of the historical buildings in the world,disease investigation and database construction" >(20160220A),Safety dynamic monitoring of the structure of the Great Hall of Huishan Temple.Entrusted by the project team,this paper takes the Great Hall of Huishan Temple as the research object,and analyzes its structural properties and seismic performance.The specific research work is as follows:(1)Through survey and investigation of historical data of the Great Hall of Huishan Temple,the structural dimensions,materials used and existing conditions of the stone-wood frame were obtained.The structural characteristics and transmission of the pillar structure,stone-wood frame and bucket of Great Hall were analyzed.(2)Combined with the experimental results of the mechanical properties in fullscale bucket,The finite element model of the stone-wood frame of the Great Hall of Huishan Temple is established by using the finite element analysis software ANSYS,and the force deformation law of the structure is obtained.The results show: In the static state,the old corner beam of the eaves is the most deformed;The maximum displacement on the front side of the bright room is 4 times of the back side of the bright room,and the maximum displacement on the back side of the second time is 3 times of the front side of the second time;The front upper squat,the fourth scorpion and the sputum,the three scorpions and the upper scorpion are the key components of the force;The deformation of the wooden column is much larger than that of the stone column.The angle of the child column on the gold column is large,the upper structure of the middle part has the risk of backward tilting,and the secondary structure of the second stage has the risk of leaning forward,resulting in a large horizontal displacement of the structure.The asymmetry of the structure reduction column also further increases the overall torsion trend.(3)A modal analysis of the stone frame of the Great Hall is carried out,The selfvibration period of Great Hall is 1.8s.It embodies the long-period flexible characteristics of stone-wood structures;The first 3 modes are longitudinal vibrations with large torsion,lateral vibration and torsional vibration.From the modal analysis as a whole,the stone-wood frame system has a large twist in the translation process,reflecting the irregularity of the structural arrangement.(4)Time-history analysis of seismic waves input longitudinally along the stone frame of the Great Hall,In the longitudinal multiple earthquakes,the longitudinal displacement of the front eucalyptus column is larger than that of the posterior eucalyptus column,and the structure has torsion in addition to the translation;The displacement of the front and rear sides of the wooden truss is inconsistent.Under the repeated action of the seismic load,the amplitude of the top of the column at the column is larger.Under the action of rare earthquakes in the longitudinal direction,the displacement amplitude of the stone-wood frame is large;the short columns such as the mast are torsionally larger,and the joints of the members are prone to plastic deformation or even direct damage.For the wooden roof trusses,it is extremely easy under the action of huge torque overturning damage occurred.(5)Time-history analysis of the seismic wave input along the horizontal direction of the stone frame of the Great Hall shows that: Under the action of multiple earthquakes in the horizontal direction,the six-layer and four-layer layers are strong in overall performance and show good seismic performance.However,the displacement of the top of the flat beam at both ends is obviously different.The lateral displacement of the top of the lower column of the flat beam is greater than that of the rear end.The maximum lateral displacement of the wooden trusses on both sides of the Ming Dynasty is 10.7 mm larger than that of the wooden trusses on both sides of the second room.The longitudinal members such as the purlins and rafters connecting the Ming and the second wooden trusses are more likely to slip,which may cause the roof to be misaligned;The longitudinal displacement caused by the rare earthquake in the transverse direction is much smaller than the lateral displacement caused by the longitudinal seismic action,which indicates that for the ancient buildings with reduced columns,the earthquake is applied on the side with less lateral stiffness,which is more likely to produce the torsional effect.(6)Time-history analysis of the vertical two-way input seismic wave along the stone frame of the Daxiong Hall shows that: Under the two-way earthquake,there is no significant difference between the one-way displacement response time history curve,but the longitudinal and lateral maximum displacement under the two-way seismic action is larger than the displacement value under the one-way earthquake.The longitudinal maximum displacement is two-way.1.2 times,the horizontal maximum displacement is 1.1 times unidirectional;Under the action of two-way earthquake,the structure shows obvious two-way motion,and the torsional effect is larger than that under the one-way earthquake.