Comparative Study On Structural Behaviour Between Ancient Structure And Antique Building Of A Qing-style Hall

The ancient Chinese timber structure which has its unique structural system and richcultural connotation is the important part of Chinese civilization and the world buildingsystem. However, because of its material is not durable, the ancient Chinese timberstructure retained less than the rest of the world system of architecture after a longperiod of natural and man-made destruction. At the beginning of the21st century, alarge number of antique buildings have been built in the whole country because ofhistorical reasons and real needs. The antique building, which combines modernmaterials and construction techniques with ancient architecture culture connotation, is anew type of architecture form. And it provides a new train of thought for the ancientarchitectural restoration and reconstruction.In order to study the structural and seismic performance of ancient timber structureand antique building, a hall was taken as the research object, and the Combin14springcombination elements were applied to simulate semi-rigidity joints of mortise-tenon,tou-kung and column base. According to the measured data and structuralcharacteristics, the reasonable timber structure and reinforced concrete structure finiteelement models were established by the finite element software ANSYS10.0andcomparative analysis were carried out.The structural displacement and stress were obtained by static analysis, indicated thatthe structure was symmetrical structure, force uniform and good integrality.The vibration frequencies and corresponding modes of vibration were obtained byanalyzing the two finite element models. The results after comprehensive comparisonshowed that the first3order vibration shapes of the two models were both horizontalvibrations mainly and accompanied by the torsional vibration. And the sizes of eachmember of reinforced concrete models larger than the modern reinforced concrete construction member sizes, which are fully based on the component module of ancienttimber structure, consequently the stiffness and the main vibration frequency werelarger.The displacement, acceleration and, the dynamic amplification coefficient of eachstructure level were obtained by analysis the two models under different earthquakeexcitations response, indicated that the peak displacement of each level all showed atrend of increase, and the maximal displacements were both appeared at column end.For the peak acceleration of each level, the timber structure was gradually decreasedand the reinforced concrete structure was increasing. For the dynamic amplificationcoefficients form column foot to column end, the timber structure were graduallydecreased and the dynamic amplification coefficients of column end were less than1;the reinforced concrete structure was gradually increasing and the dynamicamplification coefficients of column end were between3and5. The results showed thatthe resist the seismic methods of two structural models were in difference.The above-mentioned methods and corresponding conclusions could provide thereference for research and protection of ancient Chinese timber structure.