复杂博物馆隔震结构地震模拟振动台试验研究

发布时间：2018-10-13 20:42

【摘要】：云南省博物馆结构处于地震高烈度地区,其结构形式为复杂超限非规则的型钢混凝土结构,对于这种具有特殊功能的建筑结构采用隔震技术具有十分重要的意义。为了确认该博物馆隔震结构的隔震效果及损伤破坏机理,对1:30的缩尺模型开展了振动台模型试验研究。主要对隔震与非隔震模型结构的动力特性及其在多遇地震、罕遇地震下的地震反应进行测试与比较。试验结果表明:隔震结构在不同性能水准地震作用下动力特性稳定,减震效果较好,上部结构水平向各层峰值加速度小于台面峰值加速度;隔震结构的加速度反应要小于非隔震结构,结构各层变形满足规定要求限值;结构扭转反应较小,整体没有发生破坏;罕遇地震作用下隔震支座滞回曲线均匀饱满,支座没有发生损伤。隔震技术能很好的在大型复杂博物馆结构中应用。
[Abstract]:The museum structure of Yunnan Province is located in the area of high seismic intensity, and its structural form is complex and irregular steel reinforced concrete structure. It is of great significance to adopt the isolation technique for this kind of building structure with special function. In order to confirm the isolation effect and damage failure mechanism of the isolated structure of the museum, the shaking table model test was carried out on the 1:30 scale model. The dynamic characteristics of isolated and non-isolated model structures and their seismic responses under frequent and rare earthquakes are tested and compared. The experimental results show that the dynamic characteristics of the isolated structure are stable under the earthquake action of different performance levels, and the damping effect is better, and the peak acceleration of each layer in the horizontal direction of the superstructure is less than the peak acceleration of the Mesa. The acceleration response of the isolated structure is smaller than that of the non-isolated structure, and the deformation of each layer of the structure meets the prescribed limit; the torsional response of the structure is small and the whole is not destroyed; the hysteresis curve of the isolated bearing is even and full under the action of rare earthquake. There was no damage to the support. Isolation technology can be well used in large complex museum structures.
【作者单位】：上海大学土木工程系;
【基金】：国家自然科学基金项目(50878124,50978160)
【分类号】：TU352.12

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