3D Roughness Measurement of Failure Surface in CFA Pile Samples Using Three-Dimensional Laser Scanning

The bearing capacity of CFA (Continuous Flight Auger) pile is not able to reach the design if proper construction performed due soil collapse at bottom pile. In this paper, three samples were prepared simulate pile: grouting sample; mixture and gravel; sand. failure surfaces each sample obtained by a uniaxial compression tests represented as three-dimensional point cloud laser scanning. Therefore, high resolution clouds can be samples. surface was analyzed plane points histogram (P2PH) method roughness detection kernel proposed in paper. These methods analyze global well local dimensions. features sample, mixed sand, gravel distinguished sections where are predominantly distributed method.