Theoretical Development of the Core-drilling Method for Nondestructive Evaluation of Stresses in Concrete Structures

Résumé du livre

In addition to first two in-situ states of stress that are uniformly distributed through the depth, a third in-situ stress state comprised of biaxial normal stress and shear stress that are non-uniform through depth is also considered in this research. The incremental core-drilling method is developed primarily for applications in which in-situ stresses are non-uniform through the drilling depth. The incremental core-drilling method involves measuring displacements after successive increments of core-hole depth. Then these measured displacements are related to the in-situ stresses that vary through the depth. Finite element analyses were performed to verify the incremental core-drilling method.