采用GFRP橡胶隔震技术的某砌体结构动力响应分析

Research on dynamic response analysis of a masonry structure using GFRP rubber seismic isolation technique

由于近年来几次地震对中国大陆村镇房屋造成严重震害,适合村镇砌体房屋的低造价隔震技术引起广泛关注,对此开展玻璃纤维增强复合材料(GFRP)隔震技术的研究,完成GFRP橡胶隔震支座的基本力学性能试验研究.隔震支座压剪试验结果显示,GFRP橡胶隔震支座的滞回性能良好.建立村镇典型砌体结构基础隔震的计算模型,采用《建筑抗震设计规范》(GB50011-2010)所规定的隔震设计计算方法,以汶川灾区一座典型砌体结构房屋为对象,研究地震作用下采用GFRP橡胶隔震支座的基础隔震结构的动力响应,研究结果显示在地震作用下隔震房屋响应的加速度峰值明显减少,因此,GFRP隔震技术的隔震和减震效果显著.

Since rural houses were seriously damaged after several earthquakes in China in recent years, the low-cost isolation technique used in rural house has attracted extensive attention. To this point, the glass fiber reinforced polymer （GFRP） isolation technique has been studied. By experimental study on the basic mechanical properties of GFRP rubber seismic isolator, the research showed that GFRP isolator with the good hysteretic behavior was obtained. The calculation model of typical masonry structure with base seismic isolation was established. The isolation design and calculation method of Chinese Code for Seismic Design of Buildings （ GBS0011- 2010） has been adopted in this research. A typical base-isolated masonry structure which was built in disaster area has been studied as an example. The dynamic response of the masonry structure using GFRP rubber seismic isolator under earthquake action has been studied. Results suggest that the peak seismic response acceleration of the isolated structure was decreased significantly under the rare earthquake. Therefore, the isolation effect and shock absorption of the new system with GFRP isolation technique is remarkable.