The Experimental Study About Weak Surface Slope Under Dynamic Loads

As the research including weak surface slope in reinforcing state and withoutCFRP state, a dynamic load level, slope of displacement, happened strain, anddamage to slide rule. Using similar simulation experiment research, and throughthe field exploration data of slope design model, size for1000mm (long) x1000mm (high) x200mm (wide). The experiment through the application of white lightdigital speckle correlation method to model for dynamic observation. In this paperthe white light digital speckle correlation of the method is proposed, based on thesuitable for similar material simulation test and image processing spots scatteredsize suitable for the calculation of the point when field, and designed a kind ofmethod of image rotation quickly determined. On the slope model similar dynamictest, seven groups of simulation experiment, with CCD camera to slope model forthe whole high speed monitoring. From monitoring image acquisition modelloading process maps, displacement vector diagram, horizontal displacementmonitoring stations in the figure, the displacement field and strain field changes,etc. The experimental results show that the deformation model mainly in weaksurface; Anchor after reinforcement the deflection of the model change, modeldisplacement and strain appear obvious transition region; And without CFRPreinforcement model of the model and sliding surface sliding mode shape are notthe same; Monitoring stations that without CFRP displacement curve modeldisplacement curve from starting to happen sliding model no significant change,and reinforcement points on the displacement curve model significantly decreaseamplitude of the regional; In a single, double weak layer model of prestressedanchor and ordinary bolt after reinforcement, model of deformation and slidingmode is not the same.