【摘要】 "开封铁塔"为国家级重点文物,其结构的安全性能为文物专家所关注。结合"开封铁塔"的砖石结构特点和历史根源,讨论了中国砖石古塔的抗震机理,探讨了砖石古塔的动力特性。为对该塔的抗震安全性能进行合理的评价,依据现代地震工程理论和有限元分析方法,建立了该塔的三维计算模型,通过对模型输入1940 El-Centro地震波,得到了塔体关键部位的加速度、速度、位移、底部剪力和弯矩,对该塔的抗震能力进行了分析与评估,分析结果为"开封铁塔"的抗震加固提供了参考依据。更多还原

【Abstract】 Iron tower in Kaifeng is an important ancient building,security of which is cared by experts.According to design features of the iron tower in Kaifeng,the seismic mechanism and dynamical characteristics of ancient masonry tower are discussed.Calculating model of the iron tower is created by modern earthquake theory and FEM.Based on the tower model,the acceleration,velocity and displacement of key parts and the shear and moment at the base are obtained to analyze earthquake-resistance capacity of the iron tower.Research results could provide seismic strengthening reference of The Iron-Tower.更多还原