【摘要】：隨著集裝箱運(yùn)輸行業(yè)的快速發(fā)展,集裝箱深水碼頭的數(shù)量與集裝箱碼頭吞吐量都在快速增加,這對碼頭的裝卸設(shè)備與工藝提出了跟高的要求。岸邊集裝箱起重機(jī)作為碼頭前沿裝卸的主要力量,正向著大型化與高效化的方向發(fā)展,鋼結(jié)構(gòu)所承受的載荷與日俱增,疲勞破壞作為鋼結(jié)構(gòu)失效的主要原因之一,已逐漸引起人們的重視。本文利用workbench對振華港機(jī)某80T級(jí)實(shí)驗(yàn)岸邊集裝箱起重機(jī)做了詳細(xì)的有限元分析,得到了起重機(jī)鋼結(jié)構(gòu)在不同工況下的應(yīng)力分布。對實(shí)驗(yàn)岸邊集裝箱起重機(jī)進(jìn)行了應(yīng)力實(shí)測,結(jié)果與有限分分析情況對比,驗(yàn)證了有限元分析模型的有效性。根據(jù)有限元分析得到的應(yīng)力分布情況確定岸邊集裝箱起重機(jī)的疲勞弱點(diǎn)區(qū)域,通過雨流計(jì)數(shù)法從弱點(diǎn)區(qū)域的應(yīng)力時(shí)程曲線中獲取應(yīng)力循環(huán),以有效應(yīng)力范圍對其進(jìn)行表征,結(jié)合起重機(jī)載荷譜,使用基于有效應(yīng)力因子幅的壽命預(yù)估方法對起重機(jī)進(jìn)行壽命預(yù)估。本文利用LabWindows/CVI編制了起重機(jī)壽命預(yù)估軟件。軟件包含信息輸入模塊、基礎(chǔ)參數(shù)輸入與方法選擇模塊,數(shù)字濾波模塊、壽命預(yù)估模塊、圖譜顯示模塊、數(shù)據(jù)庫存儲(chǔ)模塊與結(jié)果導(dǎo)出模塊。補(bǔ)充警戒、報(bào)警單元與DAQ數(shù)據(jù)采集部分,軟件能夠在線運(yùn)行,為起重機(jī)的安全運(yùn)行提供可靠支持。
[Abstract]:With the rapid development of container transportation industry, the number of container deepwater terminals and the throughput of container terminals are increasing rapidly. The quayside container crane is developing towards the direction of large scale and high efficiency as the main force of loading and unloading in the front of wharf. The load of steel structure is increasing day by day, and fatigue damage is one of the main reasons for the failure of steel structure. It has gradually attracted people's attention. In this paper, the finite element analysis of an 80T class experimental container crane of Zhenhua Port Machine is carried out by using workbench, and the stress distribution of the crane steel structure under different working conditions is obtained. The stress measurement of the experimental container crane is carried out. The results are compared with the finite element analysis, and the validity of the finite element analysis model is verified. According to the stress distribution obtained from the finite element analysis, the fatigue weakness area of the container crane is determined. The stress cycle is obtained from the stress history curve of the vulnerable area by the rain flow counting method, and characterized by the effective stress range. Combined with the load spectrum of crane, the life prediction method based on the amplitude of effective stress factor is used to predict the life of crane. In this paper, a crane life prediction software is developed by using LabWindows/CVI. The software includes information input module, basic parameter input and method selection module, digital filter module, life prediction module, graph display module, database storage module and result export module. Supplementary warning, alarm unit and DAQ data acquisition part, the software can run online, providing reliable support for the safe operation of crane.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TH21

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