Performance of New Sandwich Tube under Axial Loading: Experiment
Performance of New Sandwich Tube under Axial Loading: Experiment
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DOI：
10.1061/(asce)0733-9445(1995)121:12(1806
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发表时间：
1995-12
期刊：
影响因子：
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通讯作者：
S. Wei;S. Mau;C. Vipulanandan;S. K. Mantrala
中科院分区：
文献类型：
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作者：
S. Wei;S. Mau;C. Vipulanandan;S. K. Mantrala
用于海上施工的钢管的强度通常受到局部和整体稳定性考虑的限制。我们提出了一种新的复合管，它由两个同心钢管与聚合物混凝土夹在他们之间。截面模量的增加将增强长管应用中的整体稳定性。复合材料管中三个组分的相互作用将对管的局部稳定性产生积极的影响。本研究集中在局部稳定性问题，并量化的强度和延性的提高，由于相互作用。26个小比例模型的短复合材料管进行了单轴压缩和6个循环半反向轴向载荷下进行了测试。测试结果表明，新型复合管的抗压强度一般比单个组分的总和高10-30%。复合管的塑性也得到了很大的改善。通过分析模型和经验公式对强度进行了预测。
The strength of steel tubes used in offshore construction is often limited by local and global stability considerations. We propose a new composite tube, which consists of two concentric steel tubes with polymer concrete sandwiched in between them. The increase in section modulus will enhance the global stability in long tube applications. The interaction of the three components of the composite tube will have a positive impact on the local stability of the tube. This study concentrates on the local stability issue and quantifies the strength and ductility enhancement due to the interaction. Twenty-six small-scale models of short composite tubes were tested under uniaxial compression and six were tested under cyclic semireversal axial loading. Test results showed that the new composite tubes generally had a compressive strength 10–30% higher than the sum of the individual components. The ductility of the composite tube was also much improved. The prediction of strength by an analytical model and an empiri...