【摘要】：中國(guó)的水電開發(fā)已百年有余,在這一百年來(lái),中國(guó)的水電事業(yè)從無(wú)到有,從衰到勝,到現(xiàn)在以2億千瓦的總裝機(jī)容量穩(wěn)居世界之巔,中國(guó)水電事業(yè)走過(guò)了不平凡歷史。發(fā)展證明,水電事業(yè)是民之本,國(guó)之本,它之于國(guó)民經(jīng)濟(jì)的快速發(fā)展有著不可替代的重要作用。如今,水電事業(yè)進(jìn)入另一段攻堅(jiān)期,即在水資源豐富與條件異�？量滩⒋娴奈鞑康貐^(qū)發(fā)展水利事業(yè)。這里地震烈度高,地質(zhì)條件差,但是從河谷條件來(lái)看很適合建設(shè)中拱壩或高拱壩,因此研究地震等荷載作用下的拱壩相關(guān)分析具有特別重要的意義。本文應(yīng)用ANSYS有限元分析軟件對(duì)坐落于貴州省威寧縣與云南省會(huì)澤縣交界處的牛欄江上的象鼻嶺水電站拱壩進(jìn)行抗震數(shù)模分析和安全評(píng)價(jià)。 象鼻嶺水電站系牛欄江河流規(guī)劃梯級(jí)中的第三個(gè)梯級(jí)水電站,其上游為大巖洞水電站,下游為小巖頭水電站。壩址以上控制流域面積11345km2,水庫(kù)總庫(kù)容2.63億m3,開發(fā)目的以發(fā)電為主,裝機(jī)容量240MW。本工程的場(chǎng)地基本烈度為Ⅶ度,抗震設(shè)防烈度為Ⅶ度。拱壩為2級(jí)雍水建筑物,工程抗震設(shè)防類別為乙類。根據(jù)規(guī)范,需進(jìn)行抗震分析。 本文主要做了一下幾方面的工作： (1)分析了象鼻嶺拱壩的自振頻率、振型等動(dòng)力特性; (2)不考慮拱壩橫縫,對(duì)各種靜、動(dòng)力荷載及組合工況進(jìn)行了三維彈性有限元計(jì)算,分析大壩的變形和應(yīng)力分布情況,并按照規(guī)范要求對(duì)應(yīng)力計(jì)算結(jié)果進(jìn)行等效處理,評(píng)價(jià)大壩應(yīng)力是否滿足規(guī)范要求； (3)考慮拱壩橫縫,計(jì)算壩體橫縫開度,并采用接觸分析方法進(jìn)行各項(xiàng)靜、動(dòng)力分析和安全評(píng)價(jià)。
[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，

本文編號(hào)：2315910