实心结构砖塔地震响应试验研究及数值分析

发布时间：2018-05-30 04:34

本文选题：实心砖塔 + 振动台试验　；参考：《西安理工大学》2017年硕士论文

【摘要】：砖石古塔融合了外来文化和中华传统建筑艺术的精华,是我国古代高层建筑的杰出代表,具有重要的文物价值。然而对于实心砖石古塔在地震作用下的震害机理尚未完全明确,开展实心砖石古塔的地震响应研究对其震害分析并加以保护具有重要的理论意义及实用价值。本文以具有代表性的实心砖石古塔玄奘塔为例,设计制作了 1/8比例的玄奘塔模型,开展了不同烈度水平地震波作用下的振动台试验研究,分析了各测点加速度及位移响应,试验结果表明,地震波双向作用时结构的地震响应更为剧烈,在地震波作用下,玄奘塔一层顶部破坏较为严重,主要是由于该塔一层存在塔室结构,表明当结构存在突变层时对抗震尤为不利。采用ABAQUS有限元软件,建立了振动台试验模型塔数值仿真试验模型,开展了相同地震波作用下的数值仿真分析,将数值仿真结果与振动台试验结果进行了对比,两者加速度及位移地震响应总体规律一致,表明有限元仿真模拟分析可以作为振动台试验的辅助方法。建立了玄奘塔试验模型结构与原型结构的数值计算模型,对比分析了地震作用下二者的动力响应,并且分析研究了结构的动力相似关系,验证了试验模型的合理性。依据地震响应分析结果对玄奘塔的震害形式进行了预测,揭示了古塔的震害规律,为古塔保护工作的开展提供参考。
[Abstract]:Masonry pagoda combines the essence of foreign culture and Chinese traditional architectural art. It is an outstanding representative of Chinese ancient high-rise buildings and has important value of cultural relics. However, the seismic damage mechanism of solid brick and stone pagoda under earthquake action is not completely clear. It is of great theoretical significance and practical value to study the seismic response of solid brick and stone pagoda for its seismic damage analysis and protection. Taking the representative solid brick ancient pagoda Xuanzang Tower as an example, a 1 / 8 scale model of Xuanzang Tower is designed and made in this paper. The shaking table tests under the action of seismic waves of different intensity levels are carried out, and the acceleration and displacement responses of each measuring point are analyzed. The test results show that the seismic response of the structure is more intense when the seismic wave acts in both directions. Under the action of seismic wave, the damage to the top of the first story of Xuanzang Tower is more serious, mainly because of the existence of the tower chamber structure on the first floor of the tower. It shows that when the structure has a sudden story, it is especially disadvantageous to earthquake resistance. Using ABAQUS finite element software, the numerical simulation test model of shaking table test model tower is established, and the numerical simulation analysis under the same seismic wave is carried out. The numerical simulation results are compared with those of shaking table test results. The results show that the finite element simulation analysis can be used as an auxiliary method for shaking table test. The numerical calculation models of Xuanzang Tower experimental model and prototype structure are established, and the dynamic responses of the two structures under earthquake action are compared and analyzed, and the dynamic similarity of the structures is analyzed and studied, which verifies the rationality of the test model. Based on the results of seismic response analysis, the earthquake damage form of Xuanzang Tower is predicted, and the earthquake damage law of ancient pagoda is revealed, which provides a reference for the protection of ancient pagoda.
【学位授予单位】：西安理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU362;TU311.3

【参考文献】