隔震异形柱框架结构振动台试验研究

发布时间：2018-05-11 15:19

本文选题：钢筋混凝土异形柱框架结构 + 基础隔震　；参考：《建筑结构学报》2016年12期

【摘要】：抗震性能的劣势会影响钢筋混凝土异形柱框架结构在工程中的推广和应用,特别是在抗震设防烈度为8度(0.2g)的地区,其高度不超过12 m的规定,严重限制了混凝土异形柱框架在高烈度地区的应用。针对钢筋混凝土异形柱框架结构的抗震性能不足,其应用受限的问题,引入成熟的隔震技术,设计一幢8层(含隔震层)基础隔震钢筋混凝土异形柱框架结构,按1/5的缩尺比例制作试验模型,并进行振动台试验,以研究隔震技术用于钢筋混凝土异形柱框架结构的适应性。通过试验,考察了基础隔震钢筋混凝土异形柱框架结构在各荷载工况下的工作状态和性能。试验结果表明:将隔震技术应用于钢筋混凝土异形柱框架结构,在抗震设防烈度为8度(0.2g)的地区可实现降低一度设防的隔震效果,普通隔震框架结构的设计方法及隔震措施适用于钢筋混凝土异形柱框架结构,采用隔震技术可以扩大钢筋混凝土异形柱框架结构的适用范围。钢筋混凝土异形柱框架结构弹塑性阶段的刚度迅速衰减会对隔震效果产生明显的影响。
[Abstract]:The disadvantage of seismic performance will affect the popularization and application of reinforced concrete special-shaped column frame structure in engineering, especially in the area where the seismic fortification intensity is 8 degrees or 0.2 g), the height of which is not more than 12 m. The application of concrete special-shaped column frame in high intensity area is severely restricted. In view of the lack of seismic performance of reinforced concrete special-shaped column frame structure and its limited application, a reinforced concrete special-shaped column frame structure with 8 stories (including isolation layer) foundation is designed by introducing mature isolation technology. The test model is made according to the scale ratio of 1 / 5 and the shaking table test is carried out to study the adaptability of the isolation technology for reinforced concrete special-shaped column frame structure. Through experiments, the working state and performance of reinforced concrete special-shaped column frame structure with foundation isolation under various load conditions are investigated. The test results show that the isolation technique can be used in reinforced concrete special-shaped column frame structures, and the isolation effect can be achieved in areas where the seismic fortification intensity is 8 degrees or 0.2 g). The design method and isolation measures of ordinary isolated frame structure are suitable for reinforced concrete special-shaped column frame structure, and the application range of reinforced concrete special-shaped column frame structure can be expanded by using isolation technology. The stiffness of reinforced concrete frame structure with special-shaped columns in elastic-plastic stage will have a significant effect on the isolation effect.
【作者单位】：昆明理工大学建筑工程学院;云南省抗震工程技术研究中心;
【基金】：国家自然科学基金项目(51168024,51368027)
【分类号】：TU375

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