【摘要】 南水北调中线工程是解决我国北方长期水资源短缺 ,实现中部地区经济可持续发展的关键工程。中线工程的输水线路穿越我国地震高烈度区域 ,线路许多区段的抗震设防烈度达到 8度。总干渠上各类建筑物共 936座 ,其抗震安全性非常重要。针对南水北调中线中的最大工程———穿黄工程的隧洞及渡槽方案进行了抗震性能分析并研究探讨了影响结构地震响应的关键因素 ,以及结构的抗震薄弱部位 ,并提出了提高结构抗震性能的工程措施更多还原

【Abstract】 The middle route of South to North water transfer project is a key project to mitigate water shortage in northern China to keep the sustainable development of the area. Crossing the regions prone to high seismic intensity, many sections of this water project will have quake resistant design intensities up to 8. There are 936 different types of structures along the trunk canal, and their safety is of important concern during earthquake. The paper analyses antiseismic performance of the tunnels and viaducts across the Yellow River the largest structure in middle route. Being focused on the factors dominating the seismic responses of these structures, the paper has revealed the seismic weak positions on them, and proposed engineering measures to improve the antiseismic performance.更多还原