發(fā)布時(shí)間：2018-05-03 08:24

  本文選題：基礎(chǔ)環(huán) + 法蘭��； 參考：《重慶大學(xué)》2014年碩士論文

【摘要】：隨著風(fēng)力發(fā)電機(jī)組不斷向大功率化方向發(fā)展，塔架底部的載荷逐漸的增大，基礎(chǔ)環(huán)作為連接塔架與地基的關(guān)鍵部件，結(jié)構(gòu)強(qiáng)度和可靠性直接影響塔架的安全。論文對(duì)基礎(chǔ)環(huán)的靜強(qiáng)度，焊縫疲勞、孔疲勞以及連接螺栓疲勞進(jìn)行了分析，同時(shí)對(duì)連接法蘭的強(qiáng)度進(jìn)行分析計(jì)算，驗(yàn)證了基礎(chǔ)環(huán)結(jié)構(gòu)的安全性。論文的研究方法為風(fēng)力發(fā)電機(jī)組基礎(chǔ)環(huán)結(jié)構(gòu)的設(shè)計(jì)與校核提供了依據(jù)，具有工程實(shí)用價(jià)值。 論文的主要研究?jī)?nèi)容如下： ①根據(jù)德國(guó)船級(jí)社Germanisher Lloyd(GL)規(guī)范和歐洲Eurocode3標(biāo)準(zhǔn)，采用工程計(jì)算和有限元方法進(jìn)行了結(jié)構(gòu)強(qiáng)度校核。 ②運(yùn)用疲勞分析理論，，對(duì)基礎(chǔ)環(huán)上的焊縫，加強(qiáng)筋孔，連接螺栓進(jìn)行了疲勞壽命分析。研究了連接螺栓工作應(yīng)力與外載荷之間的關(guān)系，修正了連接螺栓的S-N曲線，為基礎(chǔ)環(huán)結(jié)構(gòu)中連接螺栓的疲勞壽命分析提供一種有效可行的方法。 ③對(duì)基礎(chǔ)環(huán)結(jié)構(gòu)的L型法蘭連接結(jié)構(gòu)進(jìn)行了分析�；赑etersen理論的三種失效模式，分析了法蘭連接結(jié)構(gòu)的承載能力，并運(yùn)用有限元方法進(jìn)行驗(yàn)證，考慮了幾種對(duì)法蘭強(qiáng)度的影響因素，最后對(duì)與地基相連的T型法蘭進(jìn)行了尺寸的校核。 ④進(jìn)行了基礎(chǔ)環(huán)的優(yōu)化設(shè)計(jì)。采用自由形狀優(yōu)化的技術(shù)，應(yīng)用Hyperworks軟件的Optistruct模塊對(duì)基礎(chǔ)環(huán)加強(qiáng)筋孔型進(jìn)行了優(yōu)化設(shè)計(jì)，為基礎(chǔ)環(huán)設(shè)計(jì)提供了依據(jù)。
[Abstract]:With the development of wind turbine towards high power, the load at the bottom of the tower increases gradually. The foundation ring is the key component to connect the tower with the foundation. The strength and reliability of the structure directly affect the safety of the tower. The static strength, weld fatigue, hole fatigue and connection bolt fatigue of the foundation ring are analyzed in this paper. The strength of the connecting flange is analyzed and calculated to verify the safety of the foundation ring structure. The research method of this paper provides the basis for the design and checking of wind turbine foundation ring structure, and has practical value in engineering. The main contents of this thesis are as follows: According to the code of German Classification Society (Germanisher) and European Standard (Eurocode3), the structural strength is checked by engineering calculation and finite element method. Using fatigue analysis theory, the fatigue life of weld, reinforcing reinforcement hole and connecting bolt on foundation girth is analyzed. The relationship between the working stress and the external load of the connection bolt is studied. The S-N curve of the connection bolt is corrected, which provides an effective and feasible method for the fatigue life analysis of the connection bolt in the foundation ring structure. 3. The L-type flange connection structure of foundation ring structure is analyzed. Based on the three failure modes of Petersen theory, the bearing capacity of flange connection structure is analyzed, and the finite element method is used to verify it, and several factors affecting the flange strength are considered. Finally, the size of T flange connected to the foundation is checked. 4 the optimization design of foundation ring is carried out. By using the technology of free shape optimization and the Optistruct module of Hyperworks software, the optimization design of the foundation ring reinforced reinforcement pass is carried out, which provides the basis for the foundation ring design.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM315

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