Abstract
This paper introduces an innovative internal configuration for the reinforced concrete masonry shear wall to improve seismic performance. A cyclic loading and monotonic loading test were carried out on reinforced concrete masonry shear walls with large cross-section core columns to study the in-plane response. The test walls’ crack patterns, deformation characteristics, and failure characteristics were similar to those of a slit shear wall, which indicated a dislocation between core columns. The cyclic loading test results showed that the test walls’ lateral bearing capacity was between 400 and 500 kN, the ultimate drift generally around 3%, and the equivalent viscous damping ratio with a non-linear response was found around 12%. Therefore, the test walls had ideal energy dissipation capacity as well as the lateral bearing capacity. According to the similarity phenomenon between the cyclic loading test and the monotonic loading test, three resistance mechanisms were proposed to explain the in-plane response of the wall, namely the core column-rotation mechanism, wall-rotation mechanism, and connector-shear mechanism. Based on the failure sequence of these resistance mechanisms, the intact wall was divided into two functional parts. One part was the masonry part, and the other part was the inner frame. The masonry part maintained integrity and required stiffness, and the inner frame dominated the in-plane response.
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This study was financially supported by the National Key R&D Program of China (2016YFC0701308).
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Ouyang, J., Wu, F., Huang, H. et al. In-Plane Cyclic Response of Reinforced Concrete Masonry Shear Wall with Large Cross-Section Core Columns. Int J Civ Eng 20, 691–707 (2022). https://doi.org/10.1007/s40999-021-00699-5
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DOI: https://doi.org/10.1007/s40999-021-00699-5