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为了研究内蒙古呼和浩特市慈灯寺金刚宝座塔的抗震性能,测试了金刚宝座上五座小塔的动力特性,并建立数值模型计算结构的动力特性。通过动力特性比较,确定了结构整体等效弹性模量,输入调幅后的三向EL-Centro波计算古塔的地震反应,输出古塔各层应力响应、弹性位移响应、最大层间位移角以及塔底加速度时程。结果表明:中塔的水平剪应力在塔体中部最大,中塔竖向正应力、边塔水平剪应力和竖向正应力在塔体底部最大;层间位移值在塔体顶部最大,中塔和边塔的结构薄弱层分别为4层与顶层以及底层与顶层。慈灯寺塔在8度多遇地震下塔体基本完好,在8度罕遇地震下塔体上部将产生严重破坏。设置金刚宝座降低了各小塔的振动频率,加大了塔体底部的加速度幅值,不利于古塔的抗震性能。
In order to study the seismic performance of King Kong throne towers in Huhhot, Inner Mongolia, the dynamic characteristics of five towers on King throne were tested and numerical models were constructed to calculate the dynamic characteristics of the towers. Through the comparison of dynamic characteristics, the equivalent elastic modulus of the whole structure was determined. The seismic response of the ancient tower was calculated by inputting the amplitude modulated three-way EL-Centro waves, and the stress responses, elastic displacement responses, maximum inter- Bottom acceleration time history. The results show that the horizontal shear stress of the middle tower is the largest in the middle of the tower, the vertical normal stress of the middle tower, the horizontal shear stress of the side tower and the vertical normal stress are the largest at the bottom of the tower; And the structure of the weak side of the tower were 4 layers and the top layer and the bottom layer and the top layer. The tower of Ciqingsi Temple is basically intact under the earthquake of 8 degrees. It will cause serious damage to the upper part of the tower body under the rare earthquake of 8 degrees. Diamond throne set to reduce the vibration frequency of the small tower, increasing the amplitude of the bottom of the tower acceleration is not conducive to the ancient tower of seismic performance.