青海同德抽水蓄能电站上水库沥青混凝土面板坝三维有限元应力变形分析  

Three-Dimensional Finite Element Analysis of Asphalt Concrete Face Dam of Qinghai Tongde Pumped Storage Power Station

作　　者：赵智伟 刘晓光 米占宽[3] 马秀伟 ZHAO Zhiwei;LIU Xiaoguang;MI Zhankuan;MA Xiuwei(China Energy Investment Corporation Co.,Ltd,Beijing 100011,China;PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China;Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]国家能源投资集团有限责任公司,北京100011 [2]中国电建集团西北勘测设计研究院有限公司,西安710065 [3]南京水利科学研究院,南京210029

出　　处：《西北水电》2023年第5期77-83,共7页Northwest Hydropower

基　　金：国家重点研发计划(2021YFC3090100);中央级公益性科研院所基本科研业务费专项资金项目(Y320005).

摘　　要：青海同德抽水蓄能电站工程区地层岩性复杂、地震烈度高,地处西北高海拔、严寒等恶劣环境,上水库创新性地采用库岸沥青混凝土面板+库底土工膜防渗型式。为了验证坝体分区和防渗体系设计合理性,开展了静动力、湿化、流变等坝料试验、沥青混凝土配合比试验、沥青混凝土与土工膜防渗接头型式等科研试验工作和三维有限元计算工作。结果表明:坝体沉降率0.44%,应力水平小于0.45,与同类坝相比处于中等偏下水平;沥青面板与土工膜最大主拉应变分别为0.1%、0.55%,在材料允许范围内,设计是合理的。In order to cope with the harsh environment in northwest China such as complicated stratum,high seismic intensity,high altitude and severe cold,the reservoir basin of Tongde pumped storage power station in Qinghai adopts an innovative anti-seepage type,with asphalt concrete panel on the bank and geomembrane at the bottom.In order to verify the reasonable design of the dam zoning and the anti-seepage system,rockfill material tests including static and dynamic,wetting,long-term rheological and other characteristics,asphalt concrete mix ratio tests,scientific research on the joint of asphalt concrete and geomembrane,and three-dimensional finite element analysis are carried out.The results show that the settlement rate of the dam body is 0.44%,and the stress level is less than 0.45,which is at a moderately low level compared with similar dams.The maximum principal tensile strains of the asphalt panel and geomembrane are 0.1%and 0.55%respectively which are within the allowable range of the material.Therefore,the design is reasonable.

关 键 词：抽水蓄能 沥青混凝土 土工膜 应力变形 库盆防渗 

分 类 号：TV743[水利工程—水利水电工程] TV641