Measurement System Of Building Deformation Due To Pipe-jacking Based On Digital Image Correlation

Under the background of drainage network reconstruction project in Shijiazhuang Section Shijin irrigation of the south-to-north water transfer project,the thesis does some deeper research according to the problem of surface subsidence of the buildings during the pipe jacking construction.Through observing the deformation of the surface subsidence of buildings during the pipe jacking construction by digital image method,it can build a system of the surface of the building deformation about the digital camera,computer,and digital camera control software as a whole.In the pixel-correlation principle,the post-processing software of digital image measurement about the surface buildings deformation calculation during the pipe jacking construction in Matlab.With the software,it can calculate and acquire the building dynamic deformation during the “face” within range of the affect of pipe jacking.The small-scaled model that constructs the pipe jacking construction in the indoor laboratory make the use of established systems to observe the building deformation,analyze the influencing laws of the non-uniform damage to the building and the longitudinal direction of the angle between the direction of the top to the deformation filed distribution and building damage “face”.Also,the method will be applied to the engineering to measure the deformation of the building during the pipe jacking construction.