| Yingxian wooden Pagoda is the tallest existing wooden tower in the world. It hashigh construction achievement and artistic value with its complex structure andbeautiful appearance. In the past957years after its construction completed, it hassuffered from natural and man-made damage. After the past dynasties’ repair, thewooden pagoda is still locating at the north of Shanxi province. Since the recentdecades, the damage of the wooden pagoda is more and more critical, and thedeformation of some components of the structure is serious, especially the slant ofcolumns in the second floor which make the wooden pagoda in a dangerouscircumstance. From now on, the data of the surveying and mapping and field tests forthe wooden pagoda is relatively complete, and the structure tests also made a certainprogress. In order to further understanding the mechanical properties of the woodenpagoda, FEM simulation makes an effective way.The paper established the finite element model of the pagoda with the use ofSap2000software and discussed its mechanical characteristics when it under thedynamic and static circumstance. The main achievements can be summarized asfollow:(1) Established the reasonable simplified FE model of the Yingxian woodenpagoda from field investigation and literature research.(2) Made the second floor slant as the main affective factor of the safety of thepagoda, analysed its affect on the whole structure’s performance. At the same time,the reasons which cause the pagoda tilted were discussed.(3) Dynamics analysis has been taken in this study and inherent frequencies andvibration models of Yingxian wooden pagoda have been obtained from numericalsimulation, which coincided well with the tests data. At the mean time, the seismicsimulation of the wooden pagoda has been done, and its dynamic response wasdiscussed.(4) In view of the causes of the pagoda tilted, proposed the reinforcementscheme, and discussed its feasibility after the numerical simulation. |
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