本文選題：安全殼 + 施工力學�。� 參考：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2017年06期

【摘要】：目的:以廣東臺山歐洲壓水堆(EPR)核電站安全殼鋼襯里結構為研究背景,提煉鋼襯里結構模塊化施工全過程中的關鍵力學問題,對鋼襯里結構模塊化施工技術從力學角度給出建議,對確定結構施工方案和保證結構施工安全具有實用參考價值。創(chuàng)新點:1.提煉出EPR核電站安全殼鋼襯里結構模塊化施工全過程中的關鍵力學問題;2.采用"重疊單元和生死單元"技術模擬大型復雜結構混凝土澆筑成型全過程。方法:1.通過精細化有限元分析,開展吊裝工裝結構優(yōu)化分析、吊耳節(jié)點多尺度有限元分析和工作風速分析;2.建立安全殼結構復雜實體有限元模型,分析模塊之間對接拼裝初內力、新澆筑混凝土側壓力、不均勻溫度作用及風荷載等施工因素對筒體鋼襯里的影響;3.采用"重疊單元和生死單元"技術,分析大跨度穹頂鋼襯里結構在混凝土澆筑成型全過程中的結構變形和應力;4.考慮結構初始幾何缺陷和材料彈塑性的影響,對混凝土澆筑成型過程中穹頂鋼襯里結構進行穩(wěn)定性分析。結論:1.采用三角形環(huán)形桁架吊裝工裝,能夠滿足吊裝過程的應力和變形要求,并減少吊裝工裝用鋼量;2.獲得了筒體鋼襯里模塊高度和混凝土一次澆筑最大高度的相關曲線;3.得到了混凝土澆筑成型全過程中穹頂鋼襯里結構的力學性能;4.定義并驗算了混凝土澆筑成型過程中穹頂鋼襯里結構兩個關鍵階段的穩(wěn)定性,為此類結構施工提供了理論參考。
[Abstract]:Objective: To study the key mechanical problems in the whole process of modular construction of steel lining structure in Guangdong Taishan European PWR (EPR) nuclear power station, and give some suggestions on the mechanic angle of the modular construction technology of steel lining structure, which can be used to determine the construction scheme and ensure the safety of the construction. Value. Innovation: 1. refining the key mechanical problems in the whole process of modular construction of steel lining structure of EPR nuclear power station; 2. using "overlap unit and life and death unit" technology to simulate the whole process of concrete pouring of large complex structure. Method: 1. through finite-element analysis, lifting structure optimization analysis, hanging ear The multi-scale finite element analysis and wind speed analysis of the joint are made. 2. the finite element model of the complex entity of the containment structure is established, and the influence of the construction factors such as the initial internal force of the assembly, the new concrete side pressure, the uneven temperature action and the wind load on the cylinder liner, and 3. the analysis of the "overlapping unit and the life and death unit" technology. The structural deformation and stress of the large span dome steel lining structure during the whole process of concrete pouring; 4. considering the influence of the initial geometric defects and material elastoplasticity of the structure, the stability analysis of the steel lining structure of the dome during the concrete pouring process is analyzed. Conclusion: 1. using the triangular ring truss hoisting tooling can satisfy the hoisting. The requirements of the stress and deformation of the process and the reduction of the steel amount of the hoisting tooling are reduced; 2. the correlation curves of the height of the liner module and the maximum height of the concrete are obtained. 3. the mechanical properties of the steel lining structure of the dome are obtained in the whole process of concrete pouring, and 4. defines and checks the steel lining of the dome during the casting process of the concrete. The stability of the two key stages provides a theoretical reference for the construction of such structures.
【作者單位】： Key
【基金】：Project supported by the China State Construction Engineering Corporation Funded Project(No.CSCEC-2008-Z-17) the National Natural Science Foundation of China(No.51308155) the Fundamental Research Funds for the Central Universities of China(No.HIT.NSRIF.2014100) the China Postdoctoral Science Foundation Funded Project(Nos.2013M541389 and 2015T80355)
【分類號】：TM623.91;TU745.7

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