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    Design using FE analysis – synopsis

    FE 해석을 사용한 설계 - 시놉시스


    1. FE analysis will not reduce the slab thickness significantly compared with other methods of analysis.

    1. FE 해석은 다른 해석 방법에 비해 슬래브 두께를 크게 줄이지 않습니다.

     

    2. Linear FE analysis is widely used and is more than adequate for many situations.

    2. 선형 FE 해석은 널리 사용되며 많은 상황에 적합합니다.

     

    3. Non-linear FE analysis is more sophisticated and can be used to estimate deflection.

    3. 비선형 FE 해석은 더 정교하며 처짐을 추정하는 데 사용할 수 있습니다.

     

    4. It is important to carry out hand checks prior to FE analysis.

    4. FE 분석 전에 수작업 점검을 수행하는 것이 중요합니다.

     

    5. There should be sufficient nodes in the model to obtain accurate results, but it is possible to have too many nodes, especially at supports where the peak moments are accentuated. Elements should be smaller than span/10 or 1000 mm.

    5. 정확한 결과를 얻으려면 모델에 충분한 노드가 있어야 하지만, 특히 피크 모멘트가 강조되는 지지대에는 노드가 너무 많을 수 있습니다. 요소는 span/10 또는 1000mm보다 작아야 합니다.

     

    6. The element shapes should be well-conditioned. An aspect ratio of less than 2 to 1 is appropriate.

    6. 요소 모양이 잘 조절되어 있어야 합니다. 가로 세로 비율은 2대 1 미만이 적절합니다.

     

    7. The column stiffness should be modelled, i.e. ‘pinned’ supports are not recommended.

    7. 기둥 강성을 모델링해야 합니다. 즉, 'pinned' 서포트는 권장되지 않습니다.

     

    8. The area of the column should be modelled i.e. point supports are not recommended.

    8. 기둥의 면적을 모델링해야 합니다. 즉, 포인트 서포트는 권장되지 않습니다.

     

    9. Pattern loading should be considered, but ‘chequerboard’ loading is not appropriate.

    9. 패턴 하중을 고려해야 하지만 '체커보드' 하중은 적절하지 않습니다.

     

     

    10. Validate your results by considering:
       ■ Element size in critical locations.
       ■ Is there static equilibrium?
       ■ Do hand checks give similar results?
       ■ Do the graphical results look right?
       ■ Are the results in line with those for similar structures?

    10. 다음을 고려하여 결과를 검증합니다:
       중요한 위치의 요소 크기.
       정적 평형이 있는가?
       손으로 확인해도 비슷한 결과가 나오는가?
       그래픽 결과가 올바르게 보이는가?
       유사한 구조물에 대한 결과와 일치하는가?

     

     

    11. Understand the software. Ask for a summary guide from software suppliers.

    11. 소프트웨어를 이해합니다. 소프트웨어 공급업체에 요약 가이드를 요청합니다.

     

    12. Ensure that twisting moments are considered in the design.

    12. 비틀림 모멘트가 설계에 고려되었는지 확인합니다.

     

    13. Do not design the reinforcement for the peak moments; take an average moment over an appropriate width.

    13. 최대 모멘트에 대한 보강을 설계하지 말고 평균 모멘트를 고려합니다.

     

    14. Even the most sophisticated deflection analysis will be accurate only to +15% to –30%.

    14. 가장 정교한 처짐 분석도 +15% ~ -30%까지만 정확합니다.

     

    15. With linear FE analysis use an elastic modulus value modified to take account of creep and slab stiffness in order to check deflections are within limiting criteria.

    15. 선형 FE 해석에서는 크리프 및 슬래브 강성을 고려하도록 수정된 탄성 계수 값을 사용하여 처짐이 제한 기준 내에 있는지 확인합니다.

     

    16. If using non-inear analysis to obtain deflection estimates, it is important to critically appraise the software and understand its limitations.

    16. 비선형 해석을 사용하여 처짐 추정치를 얻는 경우, 소프트웨어를 비판적으로 평가하고 그 한계를 이해하는 것이 중요합니다.

     

    출처

    How to design reinforced concrete flat slabs using
    Finite Element Analysis

    Brooker BEng, CEng, MICE, MIStructE

    https://www.concretecentre.com/Resources/Publications/How-to-design-reinforced-concrete-flat-slabs-using.aspx

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