Shear and punching shear according to the Critical Shear Crack Theory: background, recent developments and integration in codes
نویسندگان
چکیده
Abstract The Critical Shear Crack Theory (CSCT) has been developed since 1985 to assess the shear resistance of members without reinforcement and punching reinforced concrete slabs in a rational manner. main idea CSCT is that governed by development critical crack, its geometry kinematics. Recent tests with detailed measurements have confirmed force can be carried through crack combination aggregate interlocking, residual tensile strength concrete, dowel action longitudinal reinforcement, inclination compression zone activation crossed if present. On basis advanced constitute laws, all these contributions calculated as function kinematic. Simplifications resulting general formulations implemented several standards including fib Model Code 2010 and, recent closed-form format, second generation European Standard for Concrete Structures. generality models allows accounting materials cases, instance presence axial forces, fiber non-metallic reinforcements designing strengthening using techniques. This document presents historical framework theory, followed short presentation most up-to-date refined models. derivation solutions based on how it leads expressions format similar current Structures also discussed. Eventually, case punching, some developments are shown what refers capability mechanical model capture relationship between acting load, rotation deformation during loading at failure.
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ژورنال
عنوان ژورنال: Revista IBRACON de Estruturas e Materiais
سال: 2023
ISSN: ['1983-4195']
DOI: https://doi.org/10.1590/s1983-41952023000300002