河海大学学报（自然科学版）2026，Vol.54Issue(1)：102-111,10.DOI:10.3876/j.issn.1000-1980.2026.01.013
江苏跨江大桥形变InSAR时空特征分析
Spatiotemporal characteristic analysis of cross-river bridge deformation in Jiangsu Province with InSAR
摘要
Abstract
Interferometric synthetic aperture radar(InSAR)was applied to Sentinel-1 satellite imagery from 2015 to 2024 to monitor long-term deformation of various cross-river bridge types in Jiangsu Province,China.The results demonstrate that InSAR effectively captures cross-river bridge deformation,with monitoring efficacy influenced by geometric structures and material properties of the bridge.Continuous steel truss structures and steel bridge towers exhibit strong backscattering characteristics,enabling dense monitoring point distributions that finely depict periodic deformation characteristics.For cable-stayed and suspension bridges,deformation concentrates at the mid-span and attenuates toward both ends,with notable differences in cumulative deformation magnitude.Integrated temperature data analysis reveals pronounced thermal expansion and temperature shrinkage effects in continuous steel truss bridges,characterized by periodic deformation amplitudes increasing from the mid-span center to both ends.Thermal effects in cable-stayed and suspension bridges are predominantly localized at steel bridge towers.关键词
跨江大桥/形变监测/InSAR/小波分析/时空特征/江苏省Key words
cross-river bridge/deformation monitoring/InSAR/wavelet analysis/spatiotemporal characteristic/Jiangsu Province引用本文复制引用
肖儒雅,王迅,李子阳,李益,何秀凤..江苏跨江大桥形变InSAR时空特征分析[J].河海大学学报（自然科学版）,2026,54(1):102-111,10.基金项目
国家自然科学基金项目(42174018,42574067) （42174018,42574067）
