泥水盾构管片拼装机力学特性分析  

Mechanical characteristics analysis of segment erector for slurry shield

作　　者：程永亮[1,2] 夏毅敏 胡兴怀[1] 曾桂英[1] 谭青[1] 李正光[1] CHENG Yongliang;XIA Yimin;HU Xinghuai;ZENG Guiying;TAN Qing;LI Zhengguang(College of Mechanical and Electrical Engineering,Central South University,Changsha 410083,China;China Railway Construction Heavy Industry,Changsha 410083,China)

机构地区：[1]中南大学机电工程学院,湖南长沙410083 [2]中国铁建重工集团有限公司,湖南长沙410083

出　　处：《哈尔滨工程大学学报》2018年第11期1798-1803,共6页Journal of Harbin Engineering University

基　　金：国家高技术研究发展计划(2012AA041803);湖南省科技重大专项项目(2014FJ1002)

摘　　要：针对泥水盾构管片拼装机工作时管片的拼装顺序,本文提出管片拼装机工步规划。利用多体动力学软件建立管片拼装过程的动力学仿真模型,研究管片安装时托梁和扼架的力学特性,为托梁和扼架的静力学分析提供了载荷边界条件。静力学仿真结果表明:托梁应力小于70 MPa,扼架应力小于80 MPa,两者应力计算结果均远小于许用应力,安全系数较高;托梁和扼架的最大变形较小,证明该管片拼装机整体刚度较好。对管片拼装机进行现场测试,托梁和扼架测试结果与静力学仿真结果的误差小于11%,误差在合理范围内。目前,该设备在穿黄地铁工程上应用良好。Considering the assembly sequence of segment erector for the slurry shield machine,this paper presents the installation steps of the slurry shield segment erector.A dynamic simulation model of segment assembly process is established using a multibody simulation software.According to the simulation results,the mechanical properties of jousts and yoke frame in the segment installation are obtained,which would provide the boundary conditions for static analysis of the joists and yoke frame.The static simulation results show that the joists and yoke frame stresses are less than 70 MPa and 80 MPa,respectively.The calculation results of both stresses are far less than the allowable stress,and higher safety factor is higher.The maximum deformations of joists and yoke frame are small,which shows that the segment erector obtains good overall stiffness.According to the field test data of the segment erector,the error of joists and yoke frame test results and static simulation results is less than 11%,which is within reasonable limit.Currently,the equipment is well applied in the Yellow River subway project.

关 键 词：泥水盾构 管片拼装机 动力学分析 静力学分析 应力测试验证 托梁 扼架 

分 类 号：U455.3[建筑科学—桥梁与隧道工程]