This study aimed to investigate the effects of small openings on the structural performance of reinforced-concrete (RC) structural walls. Cyclic lateral loading tests were conducted on five RC walls with an aspect ratio of 2.6 and small openings. The main test parameter was the size of the small openings. The specimens were designed to fail after flexural yielding, considering the typical failure mode of slender RC walls. The structural performances of the test specimens were analyzed based on the test results in terms of the load-carrying capacity (flexural strength), hysteretic behavior, strain distribution, and the size of the openings. The specimens showed flexural yielding regardless of the size of the openings, and the flexural strength and deformation capacity were not significantly affected by the small openings. This result indicates that small openings do not affect the flexural behavior of slender walls if the walls have sufficient shear resistance and the small openings are located away from the extreme compressive end and in the compression zone where compressive stress does not decrease.

中文翻译：

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小洞口结构墙的循环荷载试验

本研究旨在研究小开口对钢筋混凝土 (RC) 结构墙的结构性能的影响。在长宽比为 2.6 和小开口的五个 RC 墙上进行了循环横向加载测试。主要测试参数是小开口的尺寸。考虑到细长钢筋混凝土墙的典型破坏模式，试样设计为在弯曲屈服后破坏。基于承载能力（抗弯强度）、滞回行为、应变分布和开口尺寸的测试结果，分析了测试样本的结构性能。无论开孔大小如何，试件均表现出弯曲屈服，且弯曲强度和变形能力不受小开孔的显着影响。