基于实测试验数据的软硬复合地层下刀盘振动特征研究

作者:焦露琳 杨振兴 赵小龙
单位:中铁隧道勘察设计研究院有限公司 广东省隧道结构智能监控与维护企业重点实验室 盾构及掘进技术国家重点实验室
摘要:TBM掘进软硬复合地层过程中,刀盘受滚刀破岩冲击作用和软硬岩层的周期性反作用易出现结构疲劳损伤、局部开裂等伤害。由于缺乏刀盘振动实测数据,导致基于理论分析的激振力引起的刀盘受力变形值与实际情况差别较大。针对该问题,通过开展全盘滚刀掘进两组不同强度软硬复合地层的室内模型试验,测取刀盘三向振动加速度时域值,并基于实测值进一步对刀盘滚刀结构进行瞬态动力分析。通过全盘滚刀掘进软硬复合地层室内试验获取振动时域数据,并基于该数据进行了刀盘滚刀受力与变形分析,避免了初始激振力过于理想化预设而带来的分析误差。
关键词:隧道工程刀盘模型试验振动特征数值模拟
作者简介:焦露琳,工程师,E-mail:290306228@qq.com。
基金:河南省重点研发与推广专项(192102210218);中国中铁重大专项(2018-专项-Ⅱ类-03);中国中铁重点课题(2018-重点-11);中铁隧道科技开发计划(隧研合2017-05)。 -页码-:112-116
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参考文献[1] 李宏亮.TB880E型岩石掘进机刀盘开裂原因分析及修复方法[J].工程机械,2010,41(3):62-67,64.
[2] 王雁军.TBM主轴承故障成因分析及维保技术[J].国防交通工程与技术,2011,9(2):46-49.
[3] 张红星,张宁川.803E掘进机刀盘振动问题浅探[J].隧道建设,2007(6):76-78,111.
[4] 贾连辉,徐兆辉,聂晓东,等.TBM刀盘系统不确定工况下的动力学特性分析[J].隧道建设(中英文),2019,39(1):148-156.
[5] 凌静秀,孙伟,杨晓静,等.多点分布载荷下TBM刀盘系统振动响应分析[J].工程设计学报,2017,24(3):317-321.
[6] 蒋建东,章恩光,赵颖娣,等.盾构刀盘振动掘削动力学建模与仿真研究[J].机械工程学报,2019,55(5):113-120.
[7] 童一钰,蒋建东,张钧,等.盾构刀盘振动切削性能有限元仿真研究[J].机电工程,2016,33(6):668-673.
[8] 张晓波,刘泉声,张建明.TBM掘进刀具磨损实时监测技术及刀盘振动监测分析[J].隧道建设,2017,37(3):380-385.
[9] 刘海宁,王鲁琦,刘汉东,等.苏埃通道滚刀破岩物理模型试验花岗岩球状风化相似材料研究[J].科学技术与工程,2016,16(24):297-306.
[10] 王鲁琦,刘海宁,李苗,等.复合地层下盾构施工模态系统刀盘荷载及振动特性研究[J].隧道建设,2017,37(1):103-112.
Study on Vibration Characteristics of Cutter Head in Soft-hard Composite Stratum Based on Measured Vibration Acceleration Time History Data
JIAO Lulin YANG Zhenxing ZHAO Xiaolong
(China Railway Tunnel Consultants Co.,Ltd. Guangdong Provincial Key Laboratory of Intelligent Monitoring and Maintenance of Tunnel Structure State Key Laboratory of Shield Machine and Boring Technology)
Abstract: In the process of TBM driving soft-hard composite stratum,the cutter head is prone to structural fatigue damage and local cracking because of the impact of the hob breaking rock and the periodic reaction of soft-hard composite stratum. Due to the lack of actual measured data of the cutter head vibration,the stress and strain of the cutter head caused by the excitation force from theoretical calculation is quite different from the actual situation. To solve this problem,by conducting two model tests of different strength soft-hard composite stratum,the time domain value of the three-dimensional vibration acceleration of the cutter head is measured,and the transient dynamic analysis of the cutter head is further analyzed based on the measured values. In this paper,cutter head vibration data is obtained through tests of cutter head driving into soft-hard composite stratum,and the stress and deformation of the cutter head is analyzed based on the data avoiding analysis errors caused by the initial excitation force being too ideal.
Keywords: tunnels; cutter head; model test; vibration characteristics; simulation
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