Prior to cracking, reinforced concrete (RC) has full-interaction (FI) behavior, that is there is negligible slip between adjacent elements. After cracking, the regions in the vicinity of a crack exhibit partial-interaction (PI), that is relative slip between elements occurs. RC development has in the past relied heavily on FI strain based approaches and, consequently, they are in general not able to directly simulate the PI behavior associated with RC. Because of this deficiency in simulation, safe design rules have had to be developed either empirically or semi-empirically using a vast amount of member level testing to calibrate correction factors which are applied to virtually all aspects of RC design. As a result of this reliance on experimental calibration, the application of these empirical rules is limited by the range of testing that has been undertaken and this creates a feedback loop necessitating the further testing of large scale elements. In this paper, it is shown that a displacement based approach, that is a PI approach, can directly simulate through mechanics the RC PI behaviors and, hence, significantly reduces the need for member testing required to develop design rules. It is shown how only material testing is required in order to quantify the member behavior which, consequently, should both reduce the cost of development and expedite the development of safe design rules for a particular type of fiber concrete.

中文翻译：

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基于位移的钢筋混凝土分析、开发和设计方法

在开裂之前，钢筋混凝土 (RC) 具有全相互作用 (FI) 行为，即相邻元素之间的滑移可忽略不计。开裂后，裂纹附近的区域表现出部分相互作用（PI），即单元之间发生相对滑移。过去，RC 开发严重依赖基于 FI 应变的方法，因此，它们通常无法直接模拟与 RC 相关的 PI 行为。由于模拟中的这种缺陷，安全设计规则必须通过经验或半经验来开发，使用大量成员级别的测试来校准应用于几乎所有 RC 设计方面的校正因子。由于这种依赖于实验校准，这些经验规则的应用受到已进行的测试范围的限制，这会产生一个反馈循环，需要对大规模元素进行进一步测试。在本文中，表明基于位移的方法，即 PI 方法，可以通过力学直接模拟 RC PI 行为，因此，显着减少了开发设计规则所需的构件测试需求。展示了如何仅需要材料测试来量化构件行为，因此，这应该既降低开发成本又加快特定类型纤维混凝土安全设计规则的开发。这是一种 PI 方法，可以通过力学直接模拟 RC PI 行为，因此显着减少了开发设计规则所需的成员测试需求。展示了如何仅需要材料测试来量化构件行为，因此，这应该既降低开发成本又加快特定类型纤维混凝土安全设计规则的开发。这是一种 PI 方法，可以通过力学直接模拟 RC PI 行为，因此显着减少了开发设计规则所需的成员测试需求。展示了如何仅需要材料测试来量化构件行为，因此，这应该既降低开发成本又加快特定类型纤维混凝土安全设计规则的开发。