本文選題：吊車支撐梁 + 結(jié)構(gòu)設(shè)計　； 參考：《湘潭大學(xué)》2012年碩士論文

【摘要】：吊車是現(xiàn)代鋼結(jié)構(gòu)廠房中常配的起重運輸設(shè)備，作為吊車系統(tǒng)中重要構(gòu)件之一的吊車支撐梁結(jié)構(gòu)，其設(shè)計的好壞將直接影響到吊車的安全穩(wěn)定運行。然而吊車支撐梁的用鋼量占鋼結(jié)構(gòu)廠房用鋼總量的1/4～1/3，因此在滿足支撐梁性能要求的前提下，對吊車支撐梁結(jié)構(gòu)開展輕量化設(shè)計是非常有必要的。本文將以某企業(yè)需安裝5t吊車的支撐梁為研究對象，對其開展優(yōu)化設(shè)計及輕量化研究，具體研究內(nèi)容體現(xiàn)在下列5個方面。 1.根據(jù)企業(yè)需安裝5t吊車的實際工況，參照GB50017-2003對吊車支撐梁進(jìn)行結(jié)構(gòu)設(shè)計，確定工字形截面結(jié)構(gòu)及其參數(shù)，并對其進(jìn)行強度、剛度和穩(wěn)定性等方面的驗算。 2.建立吊車支撐梁結(jié)構(gòu)分析的有限元分析模型，分別完成了簡支和固支約束的結(jié)構(gòu)分析，得到了吊車支撐梁的變形位移與應(yīng)力分布規(guī)律；探討了3種突緣式支座結(jié)構(gòu)類型及其參數(shù)對支撐梁剛度和強度的影響，并得到了相應(yīng)的結(jié)論和建議。 3.以重量最小化為目標(biāo)函數(shù)，建立了支撐梁的形狀優(yōu)化模型，分別得到了簡支和固支約束下的優(yōu)化形狀，，并與優(yōu)化前的結(jié)構(gòu)進(jìn)行了對比分析，所得結(jié)果顯示優(yōu)化后的支撐梁結(jié)構(gòu)能夠節(jié)省10%的鋼材。 4.以支撐梁的剛度為約束條件、最小化重量為目標(biāo)函數(shù)，建立了支撐梁的拓?fù)鋬?yōu)化模型，通過拓?fù)鋬?yōu)化結(jié)果提取了加勁肋板的布置方案，并與常規(guī)布置方案進(jìn)行了對比分析，所得結(jié)果顯示通過拓?fù)鋬?yōu)化能夠節(jié)省鋼材21.35%。 5.針對2種加勁肋布置方案，開展了支撐梁結(jié)構(gòu)的模態(tài)分析，所得結(jié)果顯示拓?fù)鋬?yōu)化后得到的加勁肋布置方案，不僅能夠提高支撐梁的固有頻率，而且能減少振型中的最大變形位移，這說明優(yōu)化后的加勁肋布置方案提高了支撐梁的抗振能力。 總之，本文是對吊車支撐梁結(jié)構(gòu)進(jìn)行輕量化設(shè)計的一種嘗試，所得結(jié)果及其方法對于吊車支撐梁結(jié)構(gòu)的設(shè)計具有一定的指導(dǎo)作用。
[Abstract]:The crane is a heavy transportation equipment used in the modern steel structure factory. As one of the important components of the crane system, the crane support beam structure will directly affect the safe and stable operation of the crane. However, the steel amount of the crane supporting beam is 1/4 to 1/3 of the steel structure of the steel structure plant, so the performance of the supporting beam is satisfied. Under the premise of the request, it is very necessary to carry out the lightweight design of the crane's supporting beam structure. This paper will take the support beam of a 5T crane as the research object, and carry out the optimization design and the lightweight research. The specific research content is embodied in the following 5 aspects.
1. according to the actual working conditions of the 5T crane to be installed by the enterprise, the structure of the crane support beam is designed with reference to GB50017-2003, and the structure of the I-section and its parameters are determined, and the strength, stiffness and stability of the crane are checked.
2. the finite element analysis model of the structural analysis of the crane supporting beam is established. The structural analysis of the simple support and the support constraint is completed respectively. The deformation displacement and stress distribution of the crane support beam are obtained, and the influence of the structure type and its parameters on the rigidity and strength of the supporting beam is discussed, and the corresponding conclusions and construction are obtained. Argumentative.
3. by minimizing the weight as the objective function, the shape optimization model of the supporting beam is established. The optimized shape under the constraint of simple support and solid support is obtained respectively, and the structure is compared with the structure before the optimization. The results show that the optimized support beam structure can save 10% of the steel.
4. taking the stiffness of the supporting beam as the constraint condition and minimizing the weight as the objective function, the topology optimization model of the supporting beam is established. The arrangement of stiffened ribs is extracted by the topology optimization results, and the comparison analysis is carried out with the conventional layout scheme. The results show that the steel 21.35%. can be saved by the extension optimization.
5. according to the 2 stiffener layout schemes, the modal analysis of the supporting beam structure is carried out. The results show that the stiffener arrangement after topology optimization can not only improve the natural frequency of the supporting beam, but also reduce the maximum deformation displacement in the vibration mode, which shows that the optimized arrangement of stiffeners improves the anti vibration energy of the supporting beam. Power.
In a word, this paper is an attempt on the lightweight design of the crane's supporting beam structure. The results and its method have a certain guiding role for the design of the structure of the crane supporting beam.

【學(xué)位授予單位】：湘潭大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TH21

【參考文獻(xiàn)】

相關(guān)會議論文 前1條

1 吳玉峰;曹平周;;H型鋼吊車梁局部承壓強度計算[A];鋼結(jié)構(gòu)工程研究（四）——中國鋼結(jié)構(gòu)協(xié)會結(jié)構(gòu)穩(wěn)定與疲勞分會2002年學(xué)術(shù)交流會論文集[C];2002年

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