摘要
刀盘是全断面岩石掘进机的关键部件,通过螺栓联接到刀盘大轴承并成为主机的重要组成部分。由于螺栓和刀盘都属弹性材料,刀盘与其轴承间的支撑联接关系在掘进过程中对刀盘形变有决定性影响,因此,论文通过对刀盘弹性变形理论模型的构建,分别给出了刀盘在简支和夹支支撑条件下的中面弯曲弹性变形方程并通过刀盘外载荷确定给出了两种支撑条件下刀盘变形曲线;通过有限元分析发现,刀盘的实际支撑应介于简支和夹支之间,其中简支约占12%～16%,夹支约占84%～88%,而刀盘弹性变形最大处位于其中心r=0.28 m的圆域内。此结论为全断面岩石掘进机施工过程中刀盘形变分析提供了借鉴。
As a key component of the full face rock tunnel boring machine,cutterhead is connected to the main bearing by bolt. Because bolt and cutterhead are both elastic materials, the supporting connection between cutterhead and bearing has a decisive influence on the deformation of cutterhead during excavation process. This paper established the elastic deformation model of cutterhead, presented the bending elastic deformation equations of neutral plane under simply-supported and clip-supported conditions respectively. Then,by giving out the load on cutterhead,the deformation curves under the above conditions are presented accordingly. Finite element analyses show that the actual support of cutterhead is a mode between simple support and clamp support, of which simple support accounts for 12%-16% and the clamped support accounts for 84%-88%. The maximum deformation of cutterhead occurred in its center and is located in a circular region with r=0.28m.This conclusion provides reference for further analysis of the deformation of TBM cutterhead during the excavation process.
作者
张照煌
洪文
孙显星
ZHANG Zhaohuang;HONG Wen;SUN Xianxing(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China)
出处
《中国水利水电科学研究院学报》
北大核心
2018年第6期549-554,共6页
Journal of China Institute of Water Resources and Hydropower Research
基金
国家自然科学基金项目(51475163)
关键词
刀盘系统
全断面岩石掘进机
载荷
弹性变形
cutterhead system
full face rock tunnel boring machine
load
elastic deformation
