基于隧道开挖过程中拱顶下沉和周边收敛数据的对比分析  

Comparative Analysis of Arch Crown Subsidence and Peripheral Convergence Data during Tunnel Excavation process

作　　者：马治权 MA Zhi-quan(JSTI Group Testing and Certification Co.,Ltd.,Nanjing 211100,China)

机构地区：[1]苏交科集团检测认证有限公司,南京211100

出　　处：《价值工程》2024年第23期95-98,共4页Value Engineering

摘　　要：本研究为对隧道开挖过程中拱顶下沉和周边收敛数据的统计分析。通过分析测量数据的分布和相关性,给出本隧道的变形规律以及施工建议。研究结果表明,隧道项目监测情况良好,拱顶沉降与周边收敛数据可以较好对应;洞口位置的变形相较于洞内大,具体表现为拱顶变形差值小,两侧变形差值大的特点。周边位移变化速率整体大于拱顶沉降速率;判断位移稳定标准需综合考虑位移速率和位移速率的变化趋势。因此,洞口拱脚为易变形处,施工过程中应给与相应加固措施。This study is a statistical analysis of the vault subsidence during tunnel excavation and the data of peripheral convergence.By analyzing the distribution and correlation of the measurement data,the deformation rules and construction suggestions of the tunnel are given.The results show that the project of the tunnel is well monitored,and the settlement of the arch roof corresponds well with the convergence data of the periphery.Besides,the deformation of the position of the opening is larger than that in the hole,which is manifested as small deformation difference of the vault and large deformation difference of the two sides.The change rate of peripheral displacement is greater than the settlement rate of arch roof.To judge the standard of displacement stability,the displacement rate and the changing trend of displacement rate should be considered comprehensively.Therefore,the arch foot of the opening is easy to deform,and corresponding reinforcement measures should be given in the construction process.

关 键 词：隧道 下沉 收敛 对比分析 

分 类 号：U45[建筑科学—桥梁与隧道工程]