9度区某小学教学楼抗拉隔震设计与抗震性能分析
王夏 , 董明名 , 邓小芹 , 裴志勇 , 韦领新 , 方火浪
结构工程师 ›› 2026, Vol. 42 ›› Issue (02) : 187 -197.
9度区某小学教学楼抗拉隔震设计与抗震性能分析
Tensile Isolation Design and Seismic Performance Analysis of A Primary School Building in Area with Seismic Intensity of 9
在高烈度地区,地震的强度和发生频率往往超出常规预期,这对建筑结构的抗震和隔震设计提出了更严格、更全面的要求。当单独使用橡胶隔震支座进行基础隔震时,其抗拉性能低的问题可能成为隔震设计的瓶颈。本文针对位于9度区的某小学不规则教学楼,采用橡胶隔震支座与抗拉装置相结合的方法,对教学楼的基础隔震结构进行了设计。通过ETABS软件对教学楼的非隔震结构和隔震结构进行了地震反应分析,探讨了隔震层和上部结构在设防地震和罕遇地震作用下的地震反应特征和性能指标。结果表明,橡胶隔震支座有效地降低了地震对上部结构的作用;抗拉装置能够提供额外的抗拉能力,解决了橡胶隔震支座抗拉性能低的问题;在罕遇地震作用下,隔震层和上部结构的各项性能指标均控制在相关规范规定的限值内,表现出良好的隔震性能。因此,橡胶隔震支座与抗拉装置的结合为高烈度地区教学楼的基础隔震设计提供了一种有效的方法。
In high seismicity regions, the intensity and frequency of earthquakes often exceed conventional expectations, imposing more stringent and comprehensive requirements on the seismic and isolation design of building structures. When rubber isolation bearings are used alone for base isolation, their low tensile capacity can become a limiting factor. This study focuses on the base-isolation design of an irregular primary school teaching building located in a seismic intensity zone of 9-degree, utilizing a combined system of rubber isolation bearings and tensile devices. Seismic response analyses of both the non-isolated and isolated structures were performed using ETABS software. The seismic response characteristics and performance indices of the isolation layer and the superstructure under both fortification-level and rare earthquakes were investigated. The results indicate that rubber isolation bearings effectively reduce the seismic impact on the superstructure; the tensile devices provide supplemental tensile strength, thereby addressing the issue of low tensile performance. Under rare earthquakes, the performance indices of both the isolation layer and the superstructure are controlled within the limits specified in relevant codes, demonstrating satisfactory isolation effectiveness. Therefore, the combination of rubber isolation bearings and tensile devices offers an effective solution for the base-isolation design of teaching buildings in high seismicity regions.
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