盾构掘进姿态和纠偏曲线研究  

Study on Driving Posture and Deviation Correction Curve of the Shield Machine

作　　者：刘成 管会生[1] 谢友慧[1] 宋颖鹏 LIU Cheng;GUAN Huisheng;XIE Youhui;SONG Yingpeng(College of Mechanical Engineering,Southwest Jiaotong University,Chengdu 610031)

机构地区：[1]西南交通大学机械工程学院

出　　处：《现代隧道技术》2019年第4期105-112,126,共9页Modern Tunnelling Technology

基　　金：国家重点研发计划(2017YFB0305905)

摘　　要：盾构掘进过程中出现的姿态问题会影响整条隧道的质量。文章首先对盾构姿态参数和隧道设计轴线进行阐述,将设计轴线分为水平和竖直线形来研究;基于盾构盾尾间隙、铰接装置、推进油缸行程差对最小纠偏曲线半径影响的分析,得到最小纠偏曲线半径的取值范围;基于温克尔地基模型,推导出纠偏力矩与最小纠偏曲线半径的关系式;在现有纠偏曲线理论研究的基础上,提出优化后的水平线形纠偏曲线模型。通过对工程实例进行仿真模拟,获得的纠偏曲线满足要求,由纠偏曲线曲率半径变化而获得的纠偏力矩变化曲线符合在实际纠偏过程中的油缸推力变化规律。The posture problem of the shield machine during tunnelling might affect the tunnel construction quality.In this paper,the posture parameters of shield machine were expounded,and the designed tunnel axis was divided into horizontal alignment and vertical alignment.Through an analysis of the effect of shield tail gap,articulated device,and stroke difference of thrust cylinders on the minimum radius of deviation correction curve,the range of minimum deviation correction radius was obtained.Based on the Winkel foundation model,the relation between deviation correction moment and the minimum radius of deviation correction curve was derived.Based on a research of existing deviation correction curves,an optimized deviation correction curve model of horizontal alignment was put forward.The simulation results show the deviation correction curve meets the requirement,and the obtained variation curve of deviation correction moment based on changes of curvature radius of deviation correction curve accords with the law of thrust changes of hydraulic cylinders during practical deviation correcting.

关 键 词：盾构掘进姿态 隧道设计轴线 最小纠偏曲线半径 纠偏力矩 纠偏曲线模型 

分 类 号：U455.31[建筑科学—桥梁与隧道工程]