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	Multi-dimensional SAR tomography for monitoring the deformation of newly built concrete buildings
	Ma P. F.; Lin, H.; Lan, H. X.; Chen, F. L.
	2015
关键词	Multi-dimensional SAR tomography Newly built concrete buildings Thermal expansion Creep and shrinkage TerraSAR-X permanent scatterers thermal-expansion interferometry single
英文摘要	Deformation often occurs in buildings at early ages, and the constant inspection of deformation is of significant importance to discover possible cracking and avoid wall failure. This paper exploits the multi-dimensional SAR tomography technique to monitor the deformation performances of two newly built buildings (B1 and B2) with a special focus on the effects of concrete creep and shrinkage. To separate the nonlinear thermal expansion from total deformations, the extended 4-D SAR technique is exploited. The thermal map estimated from 44 TerraSAR-X images demonstrates that the derived thermal amplitude is highly related to the building height due to the upward accumulative effect of thermal expansion. The linear deformation velocity map reveals that B1 is subject to settlement during the construction period, in addition, the creep and shrinkage of B1 lead to wall shortening that is a height-dependent movement in the downward direction, and the asymmetrical creep of B2 triggers wall deflection that is a height-dependent movement in the deflection direction. It is also validated that the extended 4-D SAR can rectify the bias of estimated wall shortening and wall deflection by 4-D SAR. (C) 2015 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS). Published by Elsevier B.V. All rights reserved.
出处	Isprs Journal of Photogrammetry and Remote Sensing
卷	106
页	118-128
收录类别	SCI
语种	英语
ISSN号	0924-2716
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38775]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Ma P. F.,Lin, H.,Lan, H. X.,et al. Multi-dimensional SAR tomography for monitoring the deformation of newly built concrete buildings. 2015.

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