象鼻岭双曲拱坝抗震数值计算与安全评价
发布时间：2018-11-07 09:22
【摘要】：中国的水电开发已百年有余,在这一百年来,中国的水电事业从无到有,从衰到胜,到现在以2亿千瓦的总装机容量稳居世界之巅,中国水电事业走过了不平凡历史。发展证明,水电事业是民之本,国之本,它之于国民经济的快速发展有着不可替代的重要作用。如今,水电事业进入另一段攻坚期,即在水资源丰富与条件异常苛刻并存的西部地区发展水利事业。这里地震烈度高,地质条件差,但是从河谷条件来看很适合建设中拱坝或高拱坝,因此研究地震等荷载作用下的拱坝相关分析具有特别重要的意义。本文应用ANSYS有限元分析软件对坐落于贵州省威宁县与云南省会泽县交界处的牛栏江上的象鼻岭水电站拱坝进行抗震数模分析和安全评价。 象鼻岭水电站系牛栏江河流规划梯级中的第三个梯级水电站,其上游为大岩洞水电站,下游为小岩头水电站。坝址以上控制流域面积11345km2,水库总库容2.63亿m3,开发目的以发电为主,装机容量240MW。本工程的场地基本烈度为Ⅶ度,抗震设防烈度为Ⅶ度。拱坝为2级雍水建筑物,工程抗震设防类别为乙类。根据规范,需进行抗震分析。 本文主要做了一下几方面的工作： (1)分析了象鼻岭拱坝的自振频率、振型等动力特性; (2)不考虑拱坝横缝,对各种静、动力荷载及组合工况进行了三维弹性有限元计算,分析大坝的变形和应力分布情况,并按照规范要求对应力计算结果进行等效处理,评价大坝应力是否满足规范要求； (3)考虑拱坝横缝,计算坝体横缝开度,并采用接触分析方法进行各项静、动力分析和安全评价。
[Abstract]:China's hydropower development has been more than one hundred years. In the past 100 years, China's hydropower industry has experienced extraordinary history from scratch, from decline to victory, to the top of the world with a total installed capacity of 200 million kilowatts. The development proves that the hydropower industry is the foundation of the people and the foundation of the country, which plays an irreplaceable important role in the rapid development of the national economy. Now, hydropower industry has entered another critical period, that is, the development of water conservancy in the western region, where water resources are abundant and conditions are extremely harsh. The seismic intensity is high and the geological condition is poor, but the valley condition is very suitable for the construction of arch dam or high arch dam, so it is very important to study the correlation analysis of arch dam under the action of seismic equal load. In this paper, ANSYS finite element analysis software is used to analyze the earthquake resistance and safety of the Xiangbieling Hydropower Station arch dam located at the junction of Weining County, Guizhou Province, and Huize County, Yunnan Province. Xiangbieling Hydropower Station is the third cascade hydropower station in the Niulanjiang River planning cascade. The upstream of the hydropower station is Danyandong Hydropower Station, and the downstream is Xiao-Yantou Hydropower Station. The area of the control basin above the dam site is 11345km2, and the total storage capacity of the reservoir is 263 million m3. The main purpose of development is to generate electricity, and the installed capacity is 240MW. The basic intensity of the site and the seismic fortification intensity of the project are 鈪，
本文编号：2315910
[Abstract]:China's hydropower development has been more than one hundred years. In the past 100 years, China's hydropower industry has experienced extraordinary history from scratch, from decline to victory, to the top of the world with a total installed capacity of 200 million kilowatts. The development proves that the hydropower industry is the foundation of the people and the foundation of the country, which plays an irreplaceable important role in the rapid development of the national economy. Now, hydropower industry has entered another critical period, that is, the development of water conservancy in the western region, where water resources are abundant and conditions are extremely harsh. The seismic intensity is high and the geological condition is poor, but the valley condition is very suitable for the construction of arch dam or high arch dam, so it is very important to study the correlation analysis of arch dam under the action of seismic equal load. In this paper, ANSYS finite element analysis software is used to analyze the earthquake resistance and safety of the Xiangbieling Hydropower Station arch dam located at the junction of Weining County, Guizhou Province, and Huize County, Yunnan Province. Xiangbieling Hydropower Station is the third cascade hydropower station in the Niulanjiang River planning cascade. The upstream of the hydropower station is Danyandong Hydropower Station, and the downstream is Xiao-Yantou Hydropower Station. The area of the control basin above the dam site is 11345km2, and the total storage capacity of the reservoir is 263 million m3. The main purpose of development is to generate electricity, and the installed capacity is 240MW. The basic intensity of the site and the seismic fortification intensity of the project are 鈪，
本文编号：2315910
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