Structural Behaviour of Slender PVC Composite Columns Filled with Concrete
Structural Behaviour of Slender PVC Composite Columns Filled with Concrete
复制标题
混凝土填充细长 PVC 复合柱的结构性能
DOI：
10.1088/1757-899x/671/1/012083
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Sa’ad Fahad Resan
中科院分区：
文献类型：
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作者：
M. A. Raheemah;Sa’ad Fahad Resan
本研究以混凝土填充抗压强度、柱长径比、PVC截面密实度等为变量，探讨PVC混凝土细长柱之性能。在两种加载模式下对试样进行单轴压缩;在第一种模式下，使用PVC管作为复合元件来增强混凝土芯，在第二种模式下，使用PVC管仅限制混凝土芯。在几个预制的PVC混凝土细长柱中，考虑了9个具有不同PVC管特性和不同填充混凝土抗压强度的PVC混凝土截面。柱的长度是变化的，这样就可以研究整个柱的屈曲。结果表明，复合模式柱比约束模式柱具有更大的强度提高。实验预测的有效弯曲刚度，从而归一化填充混凝土刚度和PVC管刚度，和归一化的结果表明，有效弯曲刚度取决于模式（约束或复合），PVC和填充混凝土强度，和列细长比。
In this study, the performance of slender PVC-concrete columns was investigated using variables including concrete filling compressive strength, column slenderness ratio, and PVC section compactness ratio. The specimens were subjected to uniaxial compression in two loading modes; in the first mode, a PVC tube was utilised to enhance the concrete core as a composite element, and in the second mode, a PVC tube was utilised to confine the concrete core only. Nine PVC-concrete sections with different polyvinyl chloride tube characteristics and different filled concrete compressive strengths were considered in several fabricated slender PVC-concrete columns. The column lengths were varied so that overall column buckling could be investigated. The results showed that the composite mode columns exhibited more strength improvement than those in confined mode. Experimentally predicated effective flexural stiffness was thus normalised in terms of filling concrete stiffness and PVC tube stiffness, and the normalised results indicated that effective flexural stiffness depends on the mode (confining or composite), PVC and filling concrete strength, and column slenderness ratio.