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首页> 外文会议>International Conference on Materials and Products Manufacturing Technology >Testing of Precast Lightweight Foamed Concrete Sandwich Panel With Single and Double Symmetrical Shear Truss Connectors Under Eccentric Loading
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Testing of Precast Lightweight Foamed Concrete Sandwich Panel With Single and Double Symmetrical Shear Truss Connectors Under Eccentric Loading

机译：用单双对称剪切桁架连接器进行预制轻质泡沫混凝土夹芯板的测试

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This paper reports the structural behavior of precast lightweight foamed concrete sandwich panel, PLFP, subjected to eccentric loading. An experiment was conducted to investigate the structural performance of PLFP under this load. Two PLFP panels, PE- 1 and PE-2 were cast with 2000 mm in heights, 750 mm in width and 100 mm in thickness. The thickness of the wall is actually a combination of three layers. Skin layers were cast from lightweight foamed concrete while the core layer is made of polystyrene. The skin layers were connected to each other by 9 mm steel shear truss connector which were embedded through the layers. Panel PE-1 was strengthened with single diagonal shear truss connectors made of 6 mm steel rebar while panel PE-2 was strengthened with symmetrical diagonal shear truss connectors of similar steel diameter. Both panels were tested under eccentric load till failure. The results showed that panel with symmetrical double truss connectors, PE-2, is able to sustain higher load compared to panel with single shear truss connector. The load-deflection profiles indicate that both panels achieved certain degree of composite action especially during the later stage of loading where the wythes tend to move in the same direction until they reached failure. The load-strain curves for both panels highlight the inconsistent distribution of surface strain along the height of panels. The overall trend of the strain curves show that they are under compression.
机译：本文报道了预制轻质泡沫混凝土夹心板，PLFP的结构行为，受到偏心载荷。进行了实验以研究该负载下PLFP的结构性能。两个PLFP面板，PE-1和PE-2以2000毫米的高度铸造，宽750毫米，厚度为100毫米。壁的厚度实际上是三层的组合。在芯层由聚苯乙烯制成时，从轻质发泡混凝土中浇铸皮肤层。皮肤层彼此连接9mm钢剪切桁架连接器，该连接器通过层嵌入。使用6毫米钢钢筋制成的单一对角线剪切桁架连接器加强了面板PE-1，同时使用相似钢直径的对比对角线剪切桁架连接器加强了面板PE-2。在偏心载荷下进行测试，直至发生故障。结果表明，与单剪切桁架连接器相比，具有对称双桁架连接器的面板，PE-2能够维持更高的载荷。载荷偏转轮廓表明两个面板均达到一定程度的复合动作，特别是在较晚的装载阶段，其中WYTHES倾向于在相同方向上移动，直到它们达到故障。两个面板的负载 - 应变曲线沿着面板的高度突出了表面应变的不一致分布。应变曲线的总体趋势表明它们处于压缩之下。

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