Shyshkin E. Stress and deformation state anchorage of reinforcement bars of crescent type of acrylic glues under the action of static pulling force

Object - work of reinforcement bars of crescent type and class A500C when they are anchored with acrylic glues of different compositions; aim - determination of stress and deformation state for anchoring of reinforcement bars of crescent type and class A500C into concrete when acrylic glues of various compositions are used in the case of long-acting and short-term impact on anchor; methods - theoretical study, theory of elasticity methods, experimental research, mathematical statistics methods; novelty - novel mathematical model for describing of the stress and deformation state of anchorage on the acrylic glue in the form of anchoring of reinforcement bars of crescent type in concrete, when short-term and long-term pulling is performed, is developed; elasticity theory axis-symmetric problem about the distribution of stresses and displacements in the elements of the structure anchor - glue - mass concrete with impact on reinforcement bars of crescent type and class A500C, when short and long-acting pulling is performed, is solved; with the usage of numerical methods the stresses and deformations on the glue layer on the contact of glue and anchor or contact of glue and concrete for reinforcement bars of crescent profile and class A500C and in concrete, when short-term and long-term pulling is performed, taking into account various factors: physical and mechanical properties of acrylic glue, geometric properties of the anchoring connection and the age of the acrylic glue were determined; stress distribution in the concrete mass depending on the distance from the edge of rebar structures division was determined; optimum depth for the reinforcement bars of crescent type and class A500C with glue anchoring was determined; experimental data of the stress and deformation state of the glue anchoring for reinforcement bars of crescent type and class A500C for short-term pulling was obtained; results - opportunity the calculation and design of anchor connections with acrylic glues when static pulling is experienced; field of service - design, construction, reconstruction and strengthening of concrete and reinforced concrete structures.