Study on two dimensional deformation monitoring of the joint settlement during shielded under-crossing existing buildings

作者：Shang, Yanliang; Du, Shouji; Du, Jiaqing

来源：Journal of Basic Science and Engineering, 2015, 23(6): 1146-1155.

DOI：10.16058/j.issn.1005-0930.2015.06.008

• Continuous deformations
• Deformation monitoring
• Long gauge FBG
• Mathematical relationship
• Monitoring accuracy
• Settlement joints
• Shield tunneling
• Theoretical derivations

To solve difficult technology problem of the building settlement joint with two-dimension continuous deformation monitoring, the real-time high precision two-dimensional deformation monitoring idea was proposed, based on a long gauge fiber Bragg grating (FBG)cross layout. By means of strict theoretical derivation the mathematical relationship between the strain of the long value sensor and the settlement joint deformation was obtained. Using simple device the theoretical derivation was tested, and the error is very small to meet the requirements of monitoring accuracy. Finally, the technology was applied in settlement joint monitoring of a Metro reservoir structure and guidance the construction correctly. It proves that the proposed method has good reliability and practical value.

• 出版日期2015
• 单位石家庄铁道大学; 福州大学; 上海交通大学