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<p>Steel shells are widely used in various engineering applications. They are often built in coastal areas where foundation settlement is caused by uneven soil deposition and are prone to buckling. One method to reinforce the buckling strength of cylindrical steel shells is to use outer layers of carbon fiber-reinforced polymer (CFRP) composite materials. In this study, three steel cylindrical shells (one sample is without CFRP, and two samples are with CFRP) were first modeled in ABAQUS software. Then they were examined in the laboratory under a local settlement. Moreover, the amounts of settlement, buckling load, and radial displacement were investigated. The results showed that reinforcing the samples with CFRP prevents the spread of deformation to the upper parts of the shell and reduces its amount. Also, the reinforcing ring prevents the deformation of the upper edge of the shell. The use of CFRP reduces deformation in all directions and increases buckling resistance. As a result, using CFRP is a productive and efficient way to strengthen cylindrical shells.</p>

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Experimental Investigation of Local Settlement on the CFRP-Reinforced Cylindrical Steel Shells

  • 期刊论文

  • 发表日期：

    2025年4月16日

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  • Hossein Showkati,
  • Sima Ghabezi

摘要

Steel shells are widely used in various engineering applications. They are often built in coastal areas where foundation settlement is caused by uneven soil deposition and are prone to buckling. One method to reinforce the buckling strength of cylindrical steel shells is to use outer layers of carbon fiber-reinforced polymer (CFRP) composite materials. In this study, three steel cylindrical shells (one sample is without CFRP, and two samples are with CFRP) were first modeled in ABAQUS software. Then they were examined in the laboratory under a local settlement. Moreover, the amounts of settlement, buckling load, and radial displacement were investigated. The results showed that reinforcing the samples with CFRP prevents the spread of deformation to the upper parts of the shell and reduces its amount. Also, the reinforcing ring prevents the deformation of the upper edge of the shell. The use of CFRP reduces deformation in all directions and increases buckling resistance. As a result, using CFRP is a productive and efficient way to strengthen cylindrical shells.