Developing Design Criteria for Required Tension Development and Tension Splice Length for Reinforcing Bars Embedded in High-Strength Concrete

考虑到安全和缺乏信息，ACI 318-89建筑规范对混凝土抗压强度施加了10，000 psi的限制，这可以在计算钢筋的张力发展长度时用于设计过程。 这一限制是由于现行规范要求是基于抗压强度在3，000至6，000 psi范围内的样本的试验数据;然而，抗压强度超过14，000 psi的混凝土正在施工中使用。 本研究的总体目标是建立一个统一的理论模型，以解释嵌入任何抗压强度混凝土中的变形钢筋的行为。 特别感兴趣的是抗压强度超过14，000 psi的混凝土的情况。 此外，还打算以代码编写组织可采用的代码语言格式提供研究结果。

9402311 Azizinamini Concern for safety and lack of information has resulted in the ACI 318-89 building code imposing a 10,000 psi limitation on concrete compressive strength, that can be utilized in the design process when calculating tension development length of reinforcing bars. This limitation is a result of the fact that the current code requirements are based on test data form specimens with compressive strengths in the range of 3,000 to 6,000 psi; however, concrete with compressive strength exceeding 14,000 psi is being used in construction. The overall objective of the research is to develop a unified theoretical model that would explain the behavior of deformed bars embedded in concrete of any compressive strength. Of particular interest is the case of concrete with compressive strength exceeding 14,000 psi. Further, it is intended that the research findings be provided in the code language format, adoptable by code-writing organizations.