Excessive amounts of longitudinal and transverse reinforcement are required in concrete structures for safety-related nuclear structures to satisfy design and safety regulations. Closely spaced conventional single-leg stirrups are required for seismic detailing. These requirements lead to rebar congestion, difficulties in installation, and delay in the construction period. To solve these problems, it was proposed to use T-headed bars to replace the single-leg stirrups in this paper. A total of 12 tests were conducted to evaluate the effectiveness of using T-headed bars as shear reinforcement. The test parameters included height of beam, type of shear reinforcement (T-headed bars or stirrups), and shear span-to-depth ratio. It was shown from the test results that specimens with T-headed bars developed higher shear strength compared with specimens with conventional single-leg stirrups, while the behavior of these two types of specimens was similar. Design codes from six countries were then evaluated. It was concluded that these codes could provide conservative estimates of the shear strength for specimens with T-headed bars.

与安全相关的核结构，在混凝土结构中需要过多的纵向和横向钢筋以满足设计和安全法规。进行地震详细分析时需要紧密间隔的常规单腿箍筋。这些要求导致钢筋拥堵，安装困难以及施工周期延迟。为了解决这些问题，在本文中建议使用T形头杆来代替单腿箍筋。总共进行了12个测试，以评估使用T头钢筋作为抗剪钢筋的有效性。测试参数包括梁的高度，抗剪钢筋的类型（T形头钢筋或箍筋）以及抗剪跨度与深度之比。从测试结果可以看出，与传统的单腿箍筋试样相比，带有T头钢筋的试样的剪切强度更高，而这两种试样的行为相似。然后评估了六个国家的设计规范。结论是，这些规范可以为带有T头钢筋的试样提供抗剪强度的保守估计。