Influence of high column axial loads in exterior R/C beam-column joints
Influence of high column axial loads in exterior R/C beam-column joints
复制标题
高柱轴荷载对外部钢筋混凝土梁柱节点的影响
DOI：
10.1007/s12205-014-1201-z
复制
发表时间：
2014
影响因子：
2.2
通讯作者：
M. Debs
中科院分区：
文献类型：
--
作者：
V. Haach;A. L. H. Cresce El Debs;M. Debs
节理是研究和施工中存在问题的区域，因为节理的几何尺寸通常呈现高比钢。柱轴向荷载是影响外部梁柱节点性能的几个变量之一。本文通过试验研究了柱轴向荷载对钢筋混凝土外梁柱节点的影响，并与一些理论破坏预测方法进行了比较。三个具有相同几何特性的外部梁柱连接在不同水平的柱轴向荷载下进行了测试。然后，对节点的钢筋应变和裂缝模式进行了分析，试图更好地解释外梁柱节点的行为。将设计模型应用于试验试件，并对其结果进行了比较。研究表明，柱轴向荷载对节点破坏模式有影响，为保证设计模型在预测梁柱节点极限破坏荷载时的准确性，有必要对该问题进行进一步的研究。
Joints are problematic regions to study and to build because they generally present high steel ratio in reduced geometrical dimensions. Column axial load is one among several variables that influence the behavior of the exterior beam-column joints. This paper investigates the influence of the column axial load on the reinforced concrete exterior beam-column joints through experimental tests and compares the results with some theoretical methods of failure prediction. Three exterior beam-column connections, with the same geometrical properties are tested applying different levels of column axial loads. Then, an analysis of reinforcement strains and cracking pattern of the joints is presented in an attempt to better explain the behavior of the exterior beamcolumn joints. Design models are applied to the experimental specimens and their results are compared. The present study indicates that the column axial loads influence the failure mode and further research on this topic is necessary to ensure more accuracy of the design models in the prediction of the ultimate failure load of beam column joints.