Structural Engineering and Mechanics

  • 제61권4호
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  • Pages.475-481
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  • 2017
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Minimum cost design of overhead crane beam with box section strengthened by CFRP laminates

  • 투고 : 2016.03.18
  • 심사 : 2016.11.06
  • 발행 : 2017.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

An overhead travelling crane structure of two doubly symmetric welded box beams is designed for minimum cost. The rails are placed over the inner webs of box beams. The following design constraints are considered: local buckling of web and flange plates, fatigue of the butt K weld under rail and fatigue of fillet welds joining the transverse diaphragms to the box beams, fatigue of CFRP (carbon fibre reinforced plastic) laminate, deflection constraint. For the formulation of constraints the relatively new standard for cranes EN 13001-3-1 (2010) is used. To fulfill the deflection constraint CFRP strengthening should be used. The application of CFRP materials in strengthening of steel and concrete structures are widely used in civil engineering applications due to their unique advantages. In our study, we wanted to show how the mechanical properties of traditional materials can be improved by the application of composite materials and how advanced materials and new production technologies can be applied. In the optimization the following cost parts are considered: material, assembly and welding of the steel structure, material and fabrication cost of CFRP strengthening. The optimization is performed by systematic search using a MathCAD program.

키워드

참고문헌

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피인용 문헌

  1. Optimum design of stiffened plates for static or dynamic loadings using different ribs vol.74, pp.2, 2017, https://doi.org/10.12989/sem.2020.74.2.255
  2. Comprehensive research on energy-saving green design scheme of crane structure based on computational intelligence vol.11, pp.7, 2017, https://doi.org/10.1063/5.0050653