地理空间信息2025，Vol.23Issue(6)：1-7,7.DOI:10.3969/j.issn.1672-4623.2025.06.001
软土地区公路网InSAR建模与形变估计
InSAR Modeling and Deformation Estimation of Highway Network in Soft Soil Region:A Case Study of Dongting Lake Region
摘要
Abstract
The highway built in soft soil area is easy to settle,and the plastic creep characteristic is an important influence factor.In view of the defect that plastic creep characteristics are rarely taken into account in existing InSAR highway deformation models,we proposed an improved InSAR highway deformation estimation method to carry out InSAR modeling and deformation estimation for the middle road foundation and bridge subregions of highway network.In the soft soil subgrade area,we constructed a nonlinear viscoplastic periodic precipitation model(NVPBPP)with full consideration of plastic creep characteristics.In the bridge area,we constructed a linear thermal expansion model to charac-terize the thermal expansion deformation characteristics of bridge materials.Taking a soft soil area on the east side of Dongting Lake in Yueyang for example,we obtained its one-year sequential settlement results.The results show that the deformation in the study area is mainly plastic creep,and the maximum accumulated settlement is 28 mm.The modeling accuracy of NVPBPP is 3.1 mm,which is 45.1%higher than that of tra-ditional InSAR linear model,and the median error of deformation estimation is±2.5 mm.The research results can provide reference for the safe operation and stability monitoring of traffic infrastructure in soft soil area.关键词
InSAR/公路/软土/形变/监测Key words
InSAR/highway/soft soil/deformation/monitoring分类
天文与地球科学引用本文复制引用
邢学敏,王亮,龙京建..软土地区公路网InSAR建模与形变估计[J].地理空间信息,2025,23(6):1-7,7.基金项目
国家自然科学基金资助项目(42074033) （42074033）
中国水利水电第八工程局有限公司科研项目(2023060) （2023060）
湖南省交通运输厅科技进步与创新计划资助项目(202211) （202211）
长沙市杰出创新青年培养计划资助项目(kq2209011). （kq2209011）
