【摘要】 结构减隔震技术在工程中已有广泛应用且效果良好,但在大型渡槽中还没有应用先例。结合南水北调工程中大型渡槽的抗震问题,进行了模拟地震振动台试验研究。试验首先设计和制作了单跨渡槽相似模型,然后设计了多组用于试验的隔震支座,最后在不同周期地震波作用下进行了动力响应试验,对比了安装隔震支座前后渡槽隔震体系在不同工况下的动力响应。试验结果表明,利用隔震支座可以有效地减小渡槽结构的动力响应,提高渡槽的抗震性能。更多还原

【Abstract】 Though seismic isolation technology is widely applied in civil engineering and proved effective,it is not used in large aqueducts.Shaking table test experiment is conducted on counter-seismetic problem of a large aqueduct in South-to-North Water Diversion Project.First,a single span aqueduct model is designed and made.Then,several isolation bearings are designed for experiments.At last,the structure system dynamic responses are presented with isolation bearing mounted and not under different period earthquake loads for different working conditions.The result shows that by using isolation bearings the structure dynamic response can be reduced effectively.This means isolation bearing plays an important role in large aqueduct anti-seismic problem.更多还原