In the present study, an attempt has been made to experimentally investigate the flexural performance of ten simply supported reinforced concrete gable roof beams, including solid control specimen (i.e., without openings) and nine beams with web openings of different dimensions and configurations. The nine beams with openings have identical reinforcement details. All beams were monotonically loaded to failure under mid-span loading. The main variables were the number of the created openings, the total area of the created openings, and the inclination angle of the posts between openings. Of interest is the load-carrying capacity, cracking resistance and propagation, deformability, failure mode, and strain development that represent the behavior of reinforced concrete gable beams. Test results showed that the total concrete weight consumed for the tested gable beams with openings was lower than the solid gable beam by (14.9–26%). This reduction in weight led to a reduction in the flexural stiffness and, in turn. in the load-carrying capacity by (6.2–17.9%). The percentage of the decrease in the concrete consumption to the reduction in the load-carrying capacity for the tested beams with openings attained (140–240%). It was recorded that the maximum crack width depended on the total area of the created openings rather than the number of these openings.

中文翻译：

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单调静荷载下多腹板钢筋混凝土山墙屋顶梁的结构性能

在本研究中，已尝试通过实验研究十根简支钢筋混凝土山墙屋顶梁的弯曲性能，包括实体控制试件（即，没有开口）和九根具有不同尺寸和配置的腹板开口的梁。九根带开口的梁具有相同的钢筋细节。所有梁在跨中荷载下均单调加载至破坏。主要变量是所创建开口的数量、所创建开口的总面积以及开口之间柱的倾斜角。令人感兴趣的是承载能力、抗裂性和扩展性、变形性、破坏模式和应变发展，它们代表了钢筋混凝土山墙梁的行为。测试结果表明，经测试的带开口山墙梁所消耗的混凝土总重量比实心山墙梁低（14.9-26%）。重量的减轻导致了抗弯刚度的降低，进而导致了抗弯刚度的降低。在承载能力（6.2-17.9％）。混凝土消耗量的减少与所测试的开孔梁的承载能力减少的百分比 (140-240%)。据记录，最大裂纹宽度取决于所创建开口的总面积，而不是这些开口的数量。混凝土消耗量的减少与所测试的开孔梁的承载能力减少的百分比 (140-240%)。据记录，最大裂纹宽度取决于所创建开口的总面积，而不是这些开口的数量。混凝土消耗量的减少与所测试的开孔梁的承载能力减少的百分比 (140-240%)。据记录，最大裂纹宽度取决于所创建开口的总面积，而不是这些开口的数量。