以目前国外盾构普遍采用的三排滚柱式大轴承作为研究对象,结合盾构大轴承受力特点和大轴承设计方法建立参数化优化模型。以成都地铁所用的盾构为例,在满足设计要求的额定静载荷条件下,建立优化模型并利用Matlab优化工具箱求解。结果表明通过该方法能够有效确立大轴承的滚柱数量和尺寸,研究对大轴承的国产化有一定的积极作用。 Taking the three rows of roller large bearings commonly used in foreign shields as the research object, the parametric optimization model is established based on the mechanical characteristics of large shield bearings and the design method of large bearings. Taking the shield used in Chengdu Subway as an example, an optimization model is established and solved with Matlab optimization toolbox under rated static load that meets the design requirements. The results show that this method can effectively establish the number and size of large bearings roller, research on the localization of large bearings have a certain positive effect.