自动测量超大跨度悬索桥的拉索形状

IF 9.6 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Automation in Construction Pub Date : 2024-09-12 DOI:10.1016/j.autcon.2024.105748
Feiyu Wang , Zhuang Ma , Yuyao Cheng , Wang Chen , Jian Zhang
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引用次数: 0

摘要

目前对大跨度悬索桥主缆索形的测量主要依靠全站仪,费时费力。因此,本文提出了一种悬索桥索形自动测量方法:(1)针对施工过程中的目标获取,采用惯性导航和差分全球定位系统融合及路径规划方法,结合机载激光扫描获取精细点云。(2)针对大规模点云分割的难题,提出了基于空间上下文特征网(SCF-Net)和悬索桥点云简化方法的 SCF-Bridge-Net,实现了索夹的空间定位和几何信息的快速自动计算。所提出的方法被成功应用于中国湘新路大桥。结果表明,主缆形状的平均误差为 1.1 厘米,索夹角度误差约为 0.21°,验证了该方法的高效性和可靠性。
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Automated measurement of cable shape in super-long span suspension bridges

The current measurement of the main cable shape of large-span suspension bridges relies on the total station, which is time-consuming and labor-intensive. Therefore, this paper proposes an automatic measurement method for the cable shape of suspension bridges: (1) For obtaining target during the construction process, inertial navigation and differential Global Positioning System fusion and route planning method are adopted in combination with airborne laser scanning to get fine point clouds. (2) Addressing the challenge of large-scale point clouds segmentation, SCF-Bridge-Net is proposed based on Spatial Contextual Features Net (SCF-Net) and suspension bridges point clouds simplification method, enabling spatial positioning of the cable clamp and rapid automated calculation of geometric information. The proposed method is successfully applied to the Xianxin Road Bridge in China. The results show that the average error of the main cable shape is 1.1 cm, and the angle error of the cable clamp is approximately 0.21°, validating the efficiency and reliability.

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来源期刊
Automation in Construction
Automation in Construction 工程技术-工程:土木
CiteScore
19.20
自引率
16.50%
发文量
563
审稿时长
8.5 months
期刊介绍: Automation in Construction is an international journal that focuses on publishing original research papers related to the use of Information Technologies in various aspects of the construction industry. The journal covers topics such as design, engineering, construction technologies, and the maintenance and management of constructed facilities. The scope of Automation in Construction is extensive and covers all stages of the construction life cycle. This includes initial planning and design, construction of the facility, operation and maintenance, as well as the eventual dismantling and recycling of buildings and engineering structures.
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