复合型土压平衡盾构机刀盘设计与应用

发布时间：2018-03-02 12:22

本文选题：复合型土压平衡盾构机　切入点：刀盘开口率　出处：《南京理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：本文以南京地铁10号线D10-TA06标段施工用复合型土压平衡盾构机刀盘为研究对象,对刀盘开口率地质适应性、盾构推力与刀盘扭矩计算、刀盘结构设计、优化与分析等相关技术展开研究。首先,根据该标段地质情况,提出刀盘开口率与地质适应性数值模拟方法,阐述数值模拟方案。构建模拟系统模型,通过与实际监测值对比,验证模型的正确性；得到开口率建议值,结合开口率地质适应性理论计算,确定开口率32%,为后续刀盘结构设计奠定基础。其次,根据该标段地质情况,提出复合型土压平衡盾构机刀盘结构设计流程。对刀盘结构关键参数分别进行计算与分析,确定刀盘上各类刀具的数量及布置方式,在Matlab软件中绘制刀具布置图；利用Pro/E软件建立刀盘三维模型。再次,全面分析复合型土压平衡盾构机推力和刀盘扭矩的产生机理与组成要素,建立盾构机推力和刀盘扭矩理论计算模型,将该理论模型与实际工程的实测值对比,验证理论模型的正确性,并将其应用于该标段推力和扭矩的实际计算中。最后,在Workbench中对刀盘进行结构优化,采用多目标遗传算法求解,获得刀盘多目标Pareto解集；采用层次分析法进行Pareto解集选优,获得目标支配方案最优解。利用正交试验法对刀盘牛腿主要结构参数进行研究,确定了影响刀盘工作应力因素的主次顺序：牛腿夹角牛腿水平长度牛腿壁厚。通过对盾构机刀盘设计技术的研究和应用,验证了上述研究成果的正确性,依此技术和理论设计出南京地铁10号线所使用的盾构机刀盘,该技术研究推动复合型土压平衡盾构机刀盘国产化和产业化。
[Abstract]:In this paper, the cutter head of composite earth pressure balance shield machine used in construction of D10-TA06 section of Nanjing Metro Line 10 is taken as the research object, which is suitable for the geological adaptability of cutter head opening rate, the calculation of shield thrust and cutter head torque, and the design of cutter head structure. First of all, according to the geological conditions of the section, the numerical simulation method of cutter head opening rate and geological adaptability is put forward, and the numerical simulation scheme is expounded. The simulation system model is constructed and compared with the actual monitoring value. Verify the correctness of the model, get the suggested value of the opening rate, combine with the calculation of the geological adaptability theory of the opening rate, determine the opening rate 32 parts, and lay the foundation for the subsequent design of the cutter head structure. Secondly, according to the geological condition of the section, The design flow of cutter head structure of composite earth pressure balance shield machine is put forward. The key parameters of cutter head structure are calculated and analyzed separately, the number and arrangement of various kinds of cutting tools on cutter head are determined, and the tool placement diagram is drawn in Matlab software. The three-dimensional model of the cutter head is established by using Pro/E software. Thirdly, the generating mechanism and components of the thrust and torque of the composite earth pressure balance shield machine are analyzed, and the theoretical calculation model of the thrust and the torque of the cutter head of the shield machine is established. The theoretical model is compared with the measured value of practical engineering to verify the correctness of the theoretical model, and it is applied to the actual calculation of thrust and torque of the segment. Finally, the structure of the cutter head is optimized in Workbench. The multi-objective Pareto solution set is obtained by using multi-objective genetic algorithm, the Pareto solution set is selected by analytic hierarchy process (AHP), and the optimal solution of target domination scheme is obtained. The main structural parameters of the cutlass leg are studied by orthogonal test. The main and secondary order of the factors affecting the working stress of the cutter head is determined: the leg angle angle, the horizontal length of the leg and the wall thickness of the leg. The correctness of the above research results is verified by the research and application of the design technology of the cutter head of the shield machine. According to this technology and theory, the cutter head of shield machine used in Nanjing Metro Line 10 is designed. The research of this technology promotes the localization and industrialization of compound earth pressure balance shield machine cutter head.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U455.39

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