Abstract
Study on the mechanics performance of ancient Chinese timber structure is of great significance. The paper based on P’ai-lou of Xi'an Great Mosque as the research object, and used spring elements to simulate semi-rigid of mortise-tenon joints, just answered to the finite element numerical analysis. The stiffness values of mortise-tenon joints were got by nonlinear contact analysis; Under the vertical load, the inner force of structure is far less than its design value, and the safety margin of structure is above 60%; The differential motion equation of structure was given, the first six natural frequencies and the vibration performance of the P’ai-lou were got by the model analysis; Based on Spectrum analysis and time-history analysis , the results show that the ancient Chinese timber structure is soft, and has a better energy consumption performance as well as a "meet strong a strong" intelligent shock absorption characteristics. Analysis and calculation results provide the theory basis for maintenance and protection of ancient Chinese timber structure.
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