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Buckle propagation of damaged SHCC sandwich pipes: Experimental tests and numerical simulation

机译：损坏的SHCC夹层管道的扣繁殖：实验测试和数值模拟

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摘要

Sandwich pipe (SP) combining high-strength performance and thermal insulation has been considered an effective solution for oil and gas transportation in ultra-deepwater. Strain hardening cementitious composite (SHCC) is well known for its capacity to withstand both tensile load and external hydrostatic pressure. The sandwich pipe considered in the research is constituted of concentric steel pipes with SHCC annular layer. In the present research work, the SHCC was manufactured, and full scale sandwich pipes were assembled. Intact and damaged specimens were submitted to controlled external pressure in a hyperbaric chamber to obtain the collapse and propagation pressures, respectively. Modeling and simulation of the buckle propagation of the SPs were correlated with the experimental results. The results show that sandwich pipe with SHCC core has an excellent structural strength under high external pressure in both intact and damaged conditions. Moreover, the results also show that the interaction between the annular and the inner/outer pipes provides a significant contribution to the buckling resistance under propagation pressure.
机译：夹心配管（SP）结合的高强度性能和热绝缘已被认为是石油和天然气运输在超深水的有效解决方案。应变硬化粘结性复合物（SHCC）为其承受两个拉伸载荷和外部流体静压力容量是公知的。在研究中考虑的夹层管构成同心钢管与SHCC环状层构成。在本研究工作中，小肝癌制造，和满量程夹层管道进行组装。完整和破损样品提交给控制外部压力在高压室以获得崩溃和传播的压力，分别。建模和SP的带扣传播模拟与实验结果相关。结果表明，与小肝癌夹芯管具有下在两个完整和破损条件高的外部压力的优良的结构强度。此外，结果还表明，在环形和内/外管之间的相互作用提供给传播压力下的压曲阻力显著贡献。

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  • 来源
    《Marine Structures》 |2021年第5期|102976.1-102976.16|共16页
  • 作者

    Fu Guangming; Estefen Segen F.; Lourenco M. I; Yang Jiankun; Paz Claudio M.; Duan Menglan;

  • 作者单位

    China Univ Petr East China Minist Educ Key Lab Unconvent Oil & Gas Dev Qingdao 266580 Peoples R China|China Univ Petr East China Sch Petr Engn Qingdao 266580 Peoples R China|Univ Fed Rio de Janeiro COPPE Ocean Engn Dept POB 68508 BR-21941972 Rio De Janeiro Brazil;

    Univ Fed Rio de Janeiro COPPE Ocean Engn Dept POB 68508 BR-21941972 Rio De Janeiro Brazil;

    Univ Fed Rio de Janeiro COPPE Ocean Engn Dept POB 68508 BR-21941972 Rio De Janeiro Brazil;

    Univ Fed Rio de Janeiro COPPE Ocean Engn Dept POB 68508 BR-21941972 Rio De Janeiro Brazil;

    Univ Fed Rio de Janeiro COPPE Ocean Engn Dept POB 68508 BR-21941972 Rio De Janeiro Brazil;

    China Univ Petr Coll Safety & Ocean Engn Beijing 102249 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Sandwich pipe; SHCC; Full scale test; Buckle propagation;

    机译：三明治管;SHCC;全规模测试;扣繁殖;

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