arch dams are generally built in cantilvever monoliths. vertical contraction joints between monoliths control the stresses due to concrete shrinkage and temperature variations. past studies in earthquake safety evaluation of the system often show the tensile fracture and local nonlinear deformation of joints. in this paper, some nonlinear joint element constitutive models are presented to exami...

To investigate fracture properties and find analytical solutions of parameters at rock-concrete interface, three-point bending tests were performed on the composite specimens with different degrees interface roughness. Numerical simulations conducted to analyse crack propagation process zone evolution interface. For convenient applications in practice, a series derived or curve-fitted calculate...

Abstract Rock–shotcrete structures are often suffered from dynamic shearing. However, the understanding of shear response rock–shotcrete is still at its infancy. To investigate effects strain rate and interface roughness on structure, laboratory tests were carried out modified double notched sandstone–concrete specimen. Testing results show that strength peak specimens both far less than those ...

This work tackles the issue of identifiability fracture and bond properties in reinforced concrete. The basis for modeling is a computational model capable describing damage failure mechanisms concrete, as well bond-slip which result degradation concrete-steel interface. discrete approximation combines ED-FEM concrete crack representation each element X-FEM along particular reinforcement bar. u...

Destruction of rocks and artificial composites is carried out in various ways. One the most common methods impact fracture. The conical pick JCB HM380 hydraulic breaker was used as tool. experimental study rock fracture on an composite—concrete. depth penetration into concrete test parameter. model based Professor V. B. Sokolinsky. The developed this work takes account degree bluntne...

Homogenization technique has been used to derive equivalent material properties of masonry units for many years. However, most of the previous research work concentrated on derivation of equivalent material properties for solid brick masonry structure. Very few studies have been conducted to investigate complex mechanical properties of hollow concrete block masonry unit. In this paper, homogeni...