首页|Deformation monitoring of long-span railway bridges based on SBAS-InSAR technology

Deformation monitoring of long-span railway bridges based on SBAS-InSAR technology

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  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
The deformation monitoring of long-span railway bridges is significant to ensure the safety of human life and property.The interferometric synthetic aperture radar(InSAR)technology has the advantage of high accuracy in bridge deformation monitoring.This study monitored the deformation of the Ganjiang Super Bridge based on the small baseline subsets(SBAS)InSAR technology and Sentinel-1A data.We analyzed the deformation results combined with bridge structure,temperature,and riverbed sediment scouring.The results are as follows:(1)The Ganjiang Super Bridge area is stable overall,with deformation rates ranging from-15.6 mm/yr to 10.7 mm/yr(2)The settlement of the Ganjiang Super Bridge deck gradually increases from the bridge tower toward the main span,which conforms to the typical deformation pattern of a cable-stayed bridge.(3)The sediment scouring from the riverbed cause the serious settle-ment on the bridge's east side compared with that on the west side.(4)The bridge deformation nega-tively correlates with temperature,with a faster settlement at a higher temperature and a slow rebound trend at a lower temperature.The study findings can provide scientific data support for the health monitoring of long-span railway bridges.

SBAS-InSARLong-span railway bridgeDeformation monitoringBridge structureTime series deformation

Lv Zhou、Xinyi Li、Yuanjin Pan、Jun Ma、Cheng Wang、Anping Shi、Yukai Chen

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College of Geomatics and Geoinformation,Guilin University of Technology,Guilin 541004,China

Hubei LuoJia Laboratory,Wuhan 430079,China

Ecological Spatiotemporal Big Data Perception Service Laboratory,Guilin 541004,China

School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China

China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaOpen Fund of Hubei Luojia LaboratoryOpen Fund of Hubei Luojia LaboratoryGuangxi Universities'1,000 Young and Middleaged Backbone Teachers Training ProgramFundamental Research Funds for Central UniversitiesNatural Science Foundation of HubeiChina Postdoctoral Science FoundationChina Postdoctoral Science Foundation

42264004422740334190401222010000492301000182042022kf11972020CFB2822020T1304822018M630879

2024

10.1016/j.geog.2023.07.005

大地测量与地球动力学(英文版)
中国地震局地震研究所

大地测量与地球动力学(英文版)

EI
影响因子：0.568
ISSN：1674-9847
年,卷(期)：2024.15(2)
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