系杆拱桥施工线形监测中的点云数据处理方法研究  

Study on Point Cloud Data Processing Method in Alignment Monitoring of Tied Arch Bridge Construction

作　　者：任熠 左湘龙 魏晓军 REN Yi;ZUO Xianglong;WEI Xiaojun(China Railway Seventh Group Co.,Ltd.,Zhengzhou 450016,Henan,China;School of Civil Engineering,Central South University,Changsha 410075,Hunan,China)

机构地区：[1]中铁七局集团有限公司,河南郑州450016 [2]中南大学土木工程学院,湖南长沙410075

出　　处：《建筑施工》2024年第10期1643-1646,共4页Building Construction

基　　金：中铁七局集团有限公司2022年科技开发计划(22A24)。

摘　　要：三维扫描技术凭借高效、高精度的特点已成为智能化、自动化桥梁线形监测的潜在解决方案,在桥梁几何外形监测上已有了大量应用,但是针对桥梁线形监测场景下的三维激光扫描点云数据处理方法却鲜有研究。提出了一种用于系杆拱桥施工线形监测的三维激光扫描数据处理方法,可以从点云数据中提取出拱肋线形点云,并计算其变形。以合肥至新沂铁路上一座施工中的系杆拱连续梁桥为例,展示了该方法的应用效果。研究表明:提出的数据处理方法搭配三维激光扫描技术有着测量与数据处理速度快、效率高、数据成果分辨率大等优势。研究为类似工程的线形智能化监测提供了新的方法和案例。3D scanning technology,known for its high efficiency and precision,has become a potential solution for intelligent and automated bridge alignment monitoring and has been widely applied in bridge geometry monitoring.However,there is limited research on 3D laser scanning point cloud data processing methods specifically for bridge alignment monitoring.This paper presents a 3D laser scanning data processing method for construction alignment monitoring of tied arch bridges,capable of extracting the point cloud of arch rib alignment from the point cloud data and calculating its deformation.Using a tied arch continuous beam bridge under construction on the Hefei-Xinyi Railway as an example,the application effect of this method is demonstrated.The research shows that the proposed data processing method,combined with 3D laser scanning technology,offers advantages such as fast measurement and data processing speed,high efficiency,and high-resolution data results.This research provides a new method and case study for the intelligent monitoring of alignment in similar engineering projects.

关 键 词：点云数据处理 系杆拱连续梁桥 拱肋线形监测 三维激光扫描 

分 类 号：TU196.1[建筑科学—建筑理论]