Research and application of concrete replacement length for shear walls in a high-rise residential building
This paper takes as its background the severe inadequacy of concrete strength in shear walls of high-rise resi-dential buildings encountered in practical work,necessitating reinforcement through replacement concrete strengthening methods.It investigates the length of replacement and derives insights based on the actual conditions of four-sided wall structures.The study explores the impacts of the replacement length on axial compression ratio,eccentrically loaded com-pressive capacity,wall stiffness,and deformation.It confirms the feasibility of local replacements and quantifies the extent to which these various indicators are influenced by the replacement length.The paper introduces the concept of a critical replacement length,which can serve as a supplementary guideline for determining the required replacement length beyond edge components.In conjunction with durability requirements,durable protection measures are proposed for the unre-placed concrete sections.
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