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位于高海拔、高地震烈度区的引水压力管道选择保温效果好、抗震性能好的布置和结构型式非常重要。通过对坝下游面浅埋管和坝后背管进行技术经济比较,选择坝下游面浅埋管型式布置。采用三维有限元法对比分析坝下游面浅埋管钢衬钢筋混凝土与坝体联合受力、钢衬钢筋混凝土联合受力和钢管外包垫层三种结构型式,分析结果表明,采用浅埋管钢管外包垫层的结构型式时,管道周边坝体、钢衬、外包混凝土、管坝接缝应力、裂缝等均满足要求。研究成果可供类似工程参考。
In the high altitude and high seismic intensity areas of the diversion pressure pipe insulation effect is good, good seismic performance layout and structure is very important. Through the technical and economic comparison of the shallow buried pipe and the dorsal pipe behind the dam, the shallow buried pipe type layout of downstream face of the dam is selected. The three-dimensional finite element method is used to analyze and compare the three types of structures of steel-lined reinforced concrete (RCF) and dam with the joint of steel-lined reinforced concrete (RC) and the undercushion of steel pipe. The results show that the pipe- When the structural type of the cushion is outsourced, the surrounding dam, steel lining, outsourced concrete, pipe joint stress and cracks of the pipe meet the requirements. Research results for similar projects for reference.