复合交互地层地铁盾构施工参数引起的地面变形分析
崔小普1王亚辉2时泽龙3
Analysis of Ground Deformation Caused by Metro Shield Construction Parameters in Composite Interacting Stratum
CUI XiaopuWANG YahuiSHI Zelong
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作者信息:1.北京工业大学城市建设学部， 100124， 北京
2.深圳市建设综合勘察设计院有限公司， 518108， 深圳
3.湖南联智科技股份有限公司， 410200， 长沙
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Affiliation:Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, 100124, Beijing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2023.06.016
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中图分类号/CLCN:TU433
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栏目/Col:研究报告
摘要:
地铁盾构施工参数间的相互关系，对地面变形存在不同程度的影响。以天津某地铁盾构区间复合交互地层作为研究对象，采用SAS软件对盾构施工参数间的相关性进行分析。运用灰色关联理论计算引起地面变形的盾构施工参数相关性系数，并与现场地面沉降结果进行对比验证。结果表明：土舱压力与千斤顶推力的相关性最高，其相关性系数达到0.872；从粉质黏土地层到复合交互地层，千斤顶推力平均值变化最大，增加了63.1%；地面变形实测相关性系数与灰色关联系数较为接近。地铁盾构施工参数的调整可降低施工对地面变形的影响。
Abstracts:
The correlation among metro shield construction parameters affects ground deformation to various degrees. Taking the composite interacting stratum of a shield interval of Tianjin Metro as research object, the correlation among shield construction parameters is analyzed using SAS software. GRA (grey relation analysis) is employed to calculate the correlation coefficient of shield construction parameters that cause ground deformation, and the results are compared with the actual land subsidence for verification. The results show that the correlation between the earth chamber pressure and the jack thrust is the highest, the coefficient of which reaches 0.872; from silty clay stratum to composite interacting stratum, the average jack thrust increases by 63.1%; the field measured correlation coefficient of ground deformation is close to the GRA coefficient. The adjustment of metro shield construction parameters can reduce the influence of construction on ground deformation.
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