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  本文選題：水閘 + 簡化法�。� 參考：《石河子大學(xué)》2014年碩士論文

【摘要】：水閘是一種在水利工程中運(yùn)用十分普遍的水工建筑物�，F(xiàn)在我國水閘結(jié)構(gòu)計算方法主要是將閘室底板、閘墩、檢修便橋、工作橋、交通橋等構(gòu)件單獨(dú)計算，沒有考慮各個構(gòu)件之間的影響。這樣得到的計算結(jié)果就會跟水閘結(jié)構(gòu)實際工程的受力情況有一定的偏差。于是現(xiàn)在較為準(zhǔn)確的水閘結(jié)構(gòu)計算方法是有限元法[1]，它能夠較好地反映水閘結(jié)構(gòu)的整體性和真實性，能夠很好地處理閘室各個構(gòu)件之間的作用以及閘室與地基之間的相互影響。因此，使用有限元法，考慮閘室各個構(gòu)件之間的相互作用，將閘室底板、閘墩、排架、工作橋、交通橋、檢修便橋和地基作為一個計算整體，建立三維有限元模型，分析水閘結(jié)構(gòu)的應(yīng)力和位移分布情況，能夠為水閘結(jié)構(gòu)計算提供科學(xué)的理論依據(jù)，同時能夠在水閘結(jié)構(gòu)安全、穩(wěn)定等方面起到重要作用。 本文以某開敞式水閘為研究對象，首先懫用平面簡化法對水閘閘室進(jìn)行了穩(wěn)定計算，其次利用ABAQUS有限元軟件建立閘室三維有限元模型，對水閘閘室進(jìn)行穩(wěn)定計算以及結(jié)構(gòu)分析。全文主要內(nèi)容具體如下： 1.通過閱讀大量文獻(xiàn)，闡述了國內(nèi)外水閘結(jié)構(gòu)計算方法的研究進(jìn)展，掌握了國內(nèi)外水閘結(jié)構(gòu)計算方法，以及現(xiàn)有水閘結(jié)構(gòu)計算方法存在的問題。 2.懫用平面簡化法計算水閘在完建期、設(shè)計洪水位、校核洪水位、地震等四種情況的閘室穩(wěn)定性，并對比四種情況的計算結(jié)果。 3.利用ABAQUS軟件建立水閘地基三維有限元模型，對完建期、設(shè)計洪水位、校核洪水位、地震等四種情況的閘室進(jìn)行穩(wěn)定計算，并對四種計算結(jié)果進(jìn)行分析。 4.將兩種方法的閘室穩(wěn)定計算結(jié)果進(jìn)行對比分析，驗證水閘地基三維有限元模型建立的合理性和計算結(jié)果的準(zhǔn)確性。 5.根據(jù)水閘地基三維有限元模型，分析水閘閘室底板、閘墩、排架、工作橋、交通橋、檢修橋等結(jié)構(gòu)的應(yīng)力位移變化情況和承載能力，進(jìn)而對水閘結(jié)構(gòu)的工作性態(tài)進(jìn)行評價。 6.通過對某開敞式水閘閘室進(jìn)行有限元分析研究，表明三維有限元法能夠準(zhǔn)確、直觀地反應(yīng)水閘閘室的空間受力狀態(tài)，，為實際工程的建設(shè)和運(yùn)行提供科學(xué)的指導(dǎo)作用。
[Abstract]:Sluice is a kind of hydraulic structure which is widely used in hydraulic engineering. At present, the main calculation method of sluice structure in our country is to calculate separately the components such as floor slab, pier, repair bridge, working bridge, traffic bridge and so on, without considering the influence of each component. The calculated results will deviate from the actual engineering stress of sluice structure. Therefore, the more accurate calculation method of sluice structure is the finite element method [1], which can well reflect the integrity and authenticity of the sluice structure, and can deal with the interaction between the various components of the sluice chamber and the foundation. Therefore, using the finite element method, considering the interaction between the various components of the gate chamber, the three-dimensional finite element model is established by using the floor plate, pier, bent frame, working bridge, traffic bridge, repair bridge and foundation as a whole. The analysis of the stress and displacement distribution of sluice structure can provide a scientific theoretical basis for the calculation of sluice structure and play an important role in the safety and stability of sluice structure. In this paper, an open sluice is taken as the research object. Firstly, the stability of the sluice chamber is calculated by plane simplified method. Secondly, the three-dimensional finite element model of the sluice chamber is established by using ABAQUS finite element software, and the stability calculation and structural analysis of the sluice chamber are carried out. The main contents of the paper are as follows: 1. Through reading a large number of literatures, this paper expounds the research progress of sluice structure calculation methods at home and abroad, grasps the calculation methods of sluice structure at home and abroad, and the problems existing in the existing sluice structure calculation methods. 2. The plane simplified method is used to calculate the stability of the sluice chamber in the construction period, the design flood level, the check flood water level and the earthquake, and the calculated results of the four conditions are compared. 3. The 3D finite element model of sluice foundation is established by using ABAQUS software. The stability calculation is carried out for the sluice chamber under four conditions, namely, the completed construction period, the design flood water level, the check flood water level and the earthquake, and the results of the four kinds of calculation are analyzed. 4. The stability calculation results of the two methods are compared and analyzed to verify the rationality and accuracy of the 3D finite element model of sluice foundation. 5. According to the three dimensional finite element model of sluice foundation, the stress displacement and bearing capacity of sluice chamber floor, pier, bent frame, working bridge, traffic bridge and overhaul bridge are analyzed, and the working behavior of sluice structure is evaluated. 6. Through the finite element analysis of an open sluice chamber, it is shown that the three-dimensional finite element method can accurately and intuitively reflect the spatial stress state of the sluice chamber and provide scientific guidance for the construction and operation of practical projects.
【學(xué)位授予單位】：石河子大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV662

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本文編號：1862946