摘要
目前采用激光技术对双隧道沉降特征进行探究时,存在点云数据扰动等问题,导致无法准确模拟变形结果,确定变形位置。为了解决上述问题,本文选用三维激光扫描法对地铁双隧道施工地层形变数值进行新式检测。本文在分析双隧道作用力、检测隧道结构形变数值后,构建有限元差分模型,进一步提取数值模拟的断面数值,同时对地铁双隧道施工结构变形分析得出最佳变形测量方法并运用于实际。对实验结果进行分析,确定地铁双隧道施工结构变形采用三维激光扫描的测量技术变化量检测结果精确到0.1mm,在二维序列图和三维形变图上同时展示变形位置,具有很好的测量能力。
At present,when using laser technology to explore the settlement characteristics of double tunnels,there are some problems such as point cloud data disturbance,which makes it impossible to accurately simulate the deformation results and determine the deformation location.In order to solve the above problems,this paper selected the three-dimensional laser scanning method to carry on the new detection to the subway double-tunnel construction stratum deformation numerical value.In this paper,the finite element difference model was established after analyzing the double-tunnel force and detecting the deformation of the tunnel structure,at the same time,the best deformation measurement method was obtained by analyzing the deformation of construction structure of double-tunnel and applied to practice.Based on the analysis of the experimental results,it is determined that the measured results of the deformation of the construction structure of the double-tunnel are accurate to 0.1 mm by using the three-dimensional laser scanning technique,and the deformation positions are displayed on the two-dimensional sequence diagram and the three-dimensional deformation diagram simultaneously,good measurement ability.
作者
张书翰
ZHANG Shu-han(China Railway 18th Bureau Group Third Engineering Co.,Ltd.,Zhuozhou 072750,China)
出处
《浙江交通职业技术学院学报》
CAS
2024年第2期34-39,33,共7页
Journal of Zhejiang Institute of Communications
关键词
三维激光扫描
地铁双隧道
结构变形
测量
3D laser scanning
subway double tunnel
structural construction deformation
measurement
