New Shear Connector Design for Insulated Concrete Sandwich Panels Using Basalt Fiber-Reinforced Polymer Bars
New Shear Connector Design for Insulated Concrete Sandwich Panels Using Basalt Fiber-Reinforced Polymer Bars
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DOI：
10.1061/(asce)cc.1943-5614.0000662
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发表时间：
2016-08
影响因子：
4.6
通讯作者：
D. Tomlinson;N. Teixeira;A. Fam
中科院分区：
文献类型：
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作者：
D. Tomlinson;N. Teixeira;A. Fam
摘要
在本研究中，对一种采用倾斜和水平组合连接件的预制混凝土保温夹芯板设计进行了38次推出试验。对玄武岩纤维增强聚合物（BFRP）连接件和钢连接件进行了测试和比较。关键参数包括连接件的不同倾斜角度和直径；对角连接件相对于荷载的方向（即受拉或受压测试）；以及有无活性泡沫 - 混凝土粘结的面板。钢连接件在受拉时因屈服而失效，在受压时因非弹性屈曲而失效。较大直径的BFRP连接件在受拉时通常拔出，在受压时压碎。较小直径的BFRP连接件在受拉时断裂，在受压时屈曲。强度和刚度随着连接件角度和直径的增加而增加。无论连接件材料如何，都发现保温泡沫粘结的作用相似。一个考虑材料、粘结和稳定破坏模式以及几何形状的独立理论模型……
AbstractIn this study, 38 push-through tests were performed on a precast concrete insulated sandwich panel design using combined angled and horizontal connectors. Basalt fiber-reinforced polymer (BFRP) and steel connectors were tested and compared. The key parameters were various inclination angles and diameters of connectors; orientation of the diagonal connector relative to loading (i.e., tested in tension or compression); and panels with or without an active foam-to-concrete bond. Steel connectors failed by yielding in tension and inelastic buckling in compression. Larger-diameter BFRP connectors usually pulled out under tension and crushed in compression. Smaller-diameter BFRP connectors ruptured in tension and buckled in compression. Strength and stiffness increased with the connector angle and diameter. The insulation foam bond was found to contribute similarly regardless of connector material. An independent theoretical model accounting for material, bond, and stability failure modes, as well as ge...