本文選題：SF型 + 臥式��； 參考：《蘭州理工大學》2017年碩士論文

【摘要】：石油化工產(chǎn)業(yè)作為國民經(jīng)濟的重要支柱,在我國的經(jīng)濟發(fā)展中扮演著重要角色,它影響著國家安全、經(jīng)濟、軍事、政治等各個方面,對于國家的發(fā)展和社會的進步起著至關(guān)重要的作用,而作為石油產(chǎn)業(yè)的基礎(chǔ)設(shè)備,雙層油罐的安全性能也日益受到人們的關(guān)注。目前,雙層油罐作為石油的埋置式儲存設(shè)備廣泛應(yīng)用于各大加油站,若油罐在地震中受損而導致石油泄漏,將會對環(huán)境和地下水資源造成極大地污染。因此對于雙層油罐液-固耦合地震動響應(yīng)的研究在工程實際中具有十分重要的意義。本文中以SF型雙層油罐為研究對象,SF型雙層油罐的內(nèi)層采用鋼制、而外罐采用玻璃纖維增強塑料(玻璃鋼)制成,并針對雙層油罐的復合結(jié)構(gòu),建立了SF雙層油罐的分離式有限元模型,研究了SF雙層油罐的液-固耦合地震動響應(yīng)規(guī)律,具體如下:(1)考慮覆土壓力和儲液的靜水壓力作用,建立SF雙層油罐的靜力有限元模型,研究雙層油罐罐壁的應(yīng)力分布規(guī)律。結(jié)果表明:內(nèi)層應(yīng)力值遠大于夾層和外層,由此可以看出,鋼制內(nèi)層為主要受力層,保證了整個油罐的結(jié)構(gòu)強度。(2)為了研究SF雙層油罐在不同地震作用下的液-固耦合地震動響應(yīng)規(guī)律,將1.9m的覆土換算為外壓,采用彈簧單元模型模擬土體,建立結(jié)構(gòu)-彈簧單元計算模型,并利用El-Centro波和蘭州波對該計算模型進行動力有限元分析。其計算結(jié)果表明:SF雙層油罐在El-Centro波和蘭州波的作用下表現(xiàn)出不同的地震動響應(yīng)規(guī)律,但與El-Centro波相比,雙層油罐在蘭州波作用下動力響應(yīng)較大。(3)分別取覆土厚度為2.9m、3.9m和4.9m,并沿油罐的Y向輸入蘭州波,以此研究覆土厚度對SF雙層油罐液-固耦合地震動響應(yīng)的影響。其計算結(jié)果表明:SF型臥式雙層油罐的地震動響應(yīng)與覆土厚度密切相關(guān),覆土厚度越大,罐壁位移、有效應(yīng)力、主應(yīng)力也越大,但在同一覆土厚度下,罐壁鋼制內(nèi)層、夾層、外層卻表現(xiàn)出不同的動力響應(yīng)特點。
[Abstract]:As an important pillar of the national economy, the petrochemical industry plays an important role in the economic development of our country. It affects the national security, economy, military, political and other aspects, and plays a vital role in the development of the country and the progress of the society. As the basic equipment of the stone oil industry, the safety performance of the double layer oil tank is also a day. At present, double oil tank as buried storage equipment for oil is widely used in various gas stations. If oil tank is damaged in the earthquake, the oil leakage will cause great pollution to the environment and groundwater resources. It is of great significance. In this paper, the SF double layer oil tank is used as the research object. The inner layer of the SF double layer oil tank is made of steel, and the outer tank is made of glass fiber reinforced plastic (glass fiber reinforced plastic). In view of the composite structure of the double layer oil tank, a separate finite element model of the SF double layer oil tank is established, and the liquid solid coupling earthquake of the SF double layer oil tank is studied. The dynamic response law is as follows: (1) the static finite element model of SF double layer oil tank is established to study the stress distribution of the tank wall of a double layer oil tank. The results show that the inner stress of the inner layer is far greater than the interlayer and the outer layer. Thus, it can be seen that the steel inner layer is the main stress layer and ensures the whole oil tank. Structure strength. (2) in order to study the response law of SF double layer oil tank under different seismic action, the soil of 1.9m is converted into external pressure, the spring element model is used to simulate the soil, and the structure spring element calculation model is established, and the dynamic finite element analysis is carried out by using El-Centro wave and Lanzhou wave. The results show that the SF double layer oil tank shows different ground motion response laws under the action of El-Centro wave and Lanzhou wave, but compared with the El-Centro wave, the dynamic response of the double layer oil tank under the action of the Lanzhou wave is larger. (3) the thickness of the cladding soil is 2.9m, 3.9m and 4.9M, and the Y direction of the oil tank is input to the Lanzhou wave, in order to study the layer thickness of the SF double layer. The results show that the ground motion response of the SF horizontal double layer oil tank is closely related to the thickness of the soil, the greater the thickness of the overlying soil, the greater the displacement of the tank, the effective stress and the greater the main stress, but the inner layer, the interlayer and the outer layer of the steel tank wall exhibit different dynamic response characteristics under the same thickness of the soil.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE972

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本文編號：2062294