摘要
弱风化凝灰熔岩地层作为一种极硬岩地层,岩体抗压强度高,顶管施工难度大,若刀盘强度和刚度不足则极易发生安全事故。为研究D2000复合地层泥水平衡顶管机刀盘在凝灰熔岩地层下的力学性能,对刀盘模型进行静力学分析,得到了刀盘的等效应力和变形云图,确定危险位置位于正面滚刀安装侧板底部,最大等效应力值为178.21 MPa,最大变形量为0.50 mm,结果符合刀盘材料强度和刚度要求。对刀盘进行轻量化设计,得到最大应力、最大变形量以及刀盘质量随刀盘厚度减小的量变化规律,改进后的刀盘应力和变形满足优化约束条件,且其质量与未优化前相比减小8.23%,满足刀盘轻量化设计要求。
In order to study the structure design and mechanical properties of the cutterhead of D2000 Slurry balanced pipe jacking machine for composite formation, the static analysis of the cutterhead model was carried out, and the equivalent stress and deformation nephogram of the cutterhead were obtained. It was determined that the dangerous position was located at the bottom of the front cutter installation side plate. The maximum equivalent stress value was 178.21 MPa, and the maximum deformation was 0.50 mm. The results showed that the cutterhead material was made of strength and stiffness requirements. Through the lightweight design of cutter head, the maximum stress, maximum deformation and cutter head mass are obtained. The results show that the stress and deformation of the improved cutterhead meet the optimization constraints. The mass reduction is reduced by 8.23% compared with that before optimization, which meets the requirements of lightweight design of cutterhead.
作者
徐先锋
陈周晓
黄智刚
邢鹏飞
XU XianFeng;CHEN ZhouXiao;HUANG ZhiGang;XING PengFei(Nuclear Industry Jingxiang Construction Group Co.,Ltd.,Huzhou 313000,China;Fuzhou Pingtan Water Diversion Development Co.,Ltd.,Fuzhou 350799,China)
出处
《机械强度》
CAS
CSCD
北大核心
2022年第6期1387-1394,共8页
Journal of Mechanical Strength
基金
核工业井巷建设集团有限公司科技基金项目(2020001)资助。
关键词
顶管机
刀盘结构设计
有限元分析
优化
Pipe jacking machine
Cutterhead structure design
Finite element analysis
Optimization
作者简介
徐先锋,男,1970年1月生,安徽潜山人,核工业井巷建设集团有限公司高级工程师,学士,主要从事地下工程施工与管理。
