盾构机切桩对主轴承载荷及寿命的影响  

Influence of Pile Cutting of Shield Machine on Load and Life of Main Bearings

作　　者：高猛 何恩光[1] 周鹏 田淞文[1] GAO Meng;HE Enguang;ZHOU Peng;TIAN Songwen(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,China;School of Mechanical Engineering and Automation,Shenyang Institute of Technology,Fushun 113122,China)

机构地区：[1]沈阳建筑大学机械工程学院,沈阳110168 [2]沈阳工学院机械工程与自动化学院,辽宁抚顺113122

出　　处：《轴承》2025年第5期1-7,共7页Bearing

基　　金：国家自然科学基金资助项目(62173238)。

摘　　要：主轴承是盾构机的核心部件,其性能、可靠性和使用寿命直接影响施工效率和安全,盾构机切削桩基产生的载荷对主轴承的载荷及寿命有较大影响。以国内某Ф6.27 m土压平衡盾构机所配套的外径3.3 m的主轴承为研究对象,分析切削桩基工况对主轴承载荷的影响,并通过Abaqus软件仿真得到切桩工况下主轴承主推滚子、径向滚子的最大接触应力分别为2083,1675 MPa,进而计算出切削桩基工况下的主轴承疲劳寿命为5137.6 h,寿命折损率为49%。The main bearings are core components of shield machine,and the performance,reliability and service life directly affect the construction efficiency and safety.The load generated by cutting the pile foundation by shield machine has a significant impact on load and life of the bearings.Taking main bearings with outer diameter of 3.3 m for domestically producedΦ6.27 m earth pressure balance shield machine as research objects,the influence of pile foundation cutting conditions on load of the bearings is analyzed.Through Abaqus software simulation,the maximum contact stress of main thrust roller and radial roller of the bearings under pile cutting conditions is 2083 and 1675 MPa,respectively.The fatigue life of the bearings under pile foundation cutting condition is 5137.6 h,and the life loss rate is 49%.

关 键 词：滚动轴承 三排圆柱滚子轴承 盾构机 切削 桩基 载荷 疲劳寿命 

分 类 号：TH133.332[机械工程—机械制造及自动化] U455.39[建筑科学—桥梁与隧道工程]