본문 바로가기
HOME> 논문 > 논문 검색상세

논문 상세정보

Steel & Composite structures : an international journal v.4 no.6, 2004년, pp.471 - 487  
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Prediction on load carrying capacities of multi-storey door-type modular steel scaffolds

Yu, W.K.    (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University   ); Chung, K.F.    (Department of Civil and Structural Engineering, The Hong Kong Polytechnic University  );
  • 초록

    Modular steel scaffolds are commonly used as supporting scaffolds in building construction, and traditionally, the load carrying capacities of these scaffolds are obtained from limited full-scale tests with little rational design. Structural failure of these scaffolds occurs from time to time due to inadequate design, poor installation and over-loads on sites. In general, multi-storey modular steel scaffolds are very slender structures which exhibit significant non-linear behaviour. Hence, secondary moments due to both $P-{\delta}$ and $P-{\Delta}$ effects should be properly accounted for in the non-linear analyses. Moreover, while the structural behaviour of these scaffolds is known to be very sensitive to the types and the magnitudes of restraints provided from attached members and supports, yet it is always difficult to quantify these restraints in either test or practical conditions. The problem is further complicated due to the presence of initial geometrical imperfections in the scaffolds, including both member out-of-straightness and storey out-of-plumbness, and hence, initial geometrical imperfections should be carefully incorporated. This paper presents an extensive numerical study on three different approaches in analyzing and designing multi-storey modular steel scaffolds, namely, a) Eigenmode Imperfection Approach, b) Notional Load Approach, and c) Critical Load Approach. It should be noted that the three approaches adopt different ways to allow for the non-linear behaviour of the scaffolds in the presence of initial geometrical imperfections. Moreover, their suitability and accuracy in predicting the structural behaviour of modular steel scaffolds are discussed and compared thoroughly. The study aims to develop a simplified and yet reliable design approach for safe prediction on the load carrying capacities of multi-storey modular steel scaffolds, so that engineers can ensure safe and effective use of these scaffolds in building construction.


  • 주제어

    modular steel scaffolds .   initial geometrical imperfections .   notional load approach .   eigenmode imperfection approach .   critical load approach.  

  • 참고문헌 (22)

    1. Yu, W.K., Chung, K.F. and Chan, S.L. (2004),"Structural instability of multi-storey door-type modular steel scaffolds", Eng. Struct., 26(7), 867-881. 
    2. European Standard. Eurocode 3: Design of steel structures. Part 1-1: General rules and rules of buildings, 1993 & 2003. 
    3. Godley, M.H.R. and Beale, R.G. (1997),"Sway stiffness of scaffold structures", The Structural Engineer, 75(1), 4-12. 
    4. Godley, M.H.R. and Beale, R.G. (2001),"Analysis of large proprietary access scaffold structures", Proc. of the Institution of Civil Engineers, Structures and Buildings, 146, 31-39. 
    5. Gylltoft, K. and Mroz, K. (1995),"Load carrying capacity of scaffolds", Struct. Eng. Int., 1, 37-42. 
    6. Holmes, M. and Hindson, D. (1979),"Structural behaviour of load bearing falsework", Proc. of Institution of Civil Engineers, 67, 721-741. 
    7. Huang, Y.L., Chen, H.J., Rosowsky, D.V. and Kao, Y.G. (2000a),"Load-carrying capacities and failure modes of scaffold-shoring systems, Part I: Modeling and experiments", Struct. Eng. Mech., 10(1), 53-66. 
    8. Huang, Y.L., Kao, Y.G. and Rosowsky, D.V. (2000b),"Load-carrying capacities and failure modes of scaffoldshoring systems, Part II: An analytical model and its closed-form solution", Struct. Eng. Mech., 10(1), 67-79. 
    9. Liew, J.Y.R., White, D.W. and Chen, W.F. (1994),"Notional-load plastic-hinge method for frame design", J. of Struct. Eng., 120(5), 1434-1454. 
    10. Lightfoot, E. and Oliveto, G. (1977),"The collapse strength of tubular steel scaffold assemblies", Proc. of Institution of Civil Engineers, 63, 311-329. 
    11. Milokovic, B., Beale, R.G. and Godley, M.H.R. (2002),"Determination of the factors of safety of standard scaffolds structures", Proc. of the Third Int. Conf. on Advances in Steel Structures, 1, 303-310. 
    12. Peng, J.L. (1994),"Analysis models and design guidelines for high-clearance scaffold systems", Ph.D. Dissertation, School of Civil Engineering, Purdue University. 
    13. Peng, J.L., Pan, A.D.E., Chen, W.F., Yen, T. and Chan, S.L. (1997),"Structural modeling and analysis of modular falsework systems", J. of Struct. Eng., 123(9), 1245-1251. 
    14. Peng, J.L., Pan, A.D., Rosowsky, D.V., Chen, W.F., Yen, T. and Chan, S.L. (1996),"High clearance scaffold systems during construction I. Structural modeling and modes of failure", Eng. Struct., 18(3), 247-257. 
    15. Weesner, L.B. and Jones, H.L. (2001),"Experimental and analytical capacity of frame scaffolding", Eng. Struct., 23(6), 592-599. 
    16. Yu, W.K. (2004a),"Structural behaviour of tubular skeletal framework", Ph.D Thesis, the Hong Kong Polytechnic University. 
    17. Yu, W.K. (2004b),"An Investigation into structural behaviour of modular steel scaffolds", J. of Steel and Composite Structures, 4(3), 211-226. 
    18. Yu, W.K., Chung, K.F. and Chan, S.L. (2002),"Structural stability of modular steel scaffolding systems", Proc. of the Second Int. Conf. on Stability and Dynamic, Singapore, 418-423. 
    19. British Standards Institution. BS5950: Structural use of steelwork in building. Part 1: Code of practice for design - Rolled and welded sections, 2000. 
    20. British Standards Institution. BS5975: Code of practice for falsework, 1996. 
    21. Chan, S.L. and Zhou, Z.H. (1998),"On the development of a robust element for second-order Non-linear integrated design and analysis (NIDA)", J. of Constructional Steel Research, 47(I-II), 169-190. 
    22. Chung, K.F. and Yu, W.K. (2003),"Experimental and theoretical investigations on modular steel scaffolds", Proc. of Technical Seminar on Metal Scaffolding (Falsework) - Design, Construction & Safety, the Hong Kong Institute of Steel Construction, Hong Kong, 13-23. 

 활용도 분석

  • 상세보기

    amChart 영역
  • 원문보기

    amChart 영역

원문보기

무료다운로드
  • 원문이 없습니다.
유료다운로드

유료 다운로드의 경우 해당 사이트의 정책에 따라 신규 회원가입, 로그인, 유료 구매 등이 필요할 수 있습니다. 해당 사이트에서 발생하는 귀하의 모든 정보활동은 NDSL의 서비스 정책과 무관합니다.

원문복사신청을 하시면, 일부 해외 인쇄학술지의 경우 외국학술지지원센터(FRIC)에서
무료 원문복사 서비스를 제공합니다.

NDSL에서는 해당 원문을 복사서비스하고 있습니다. 위의 원문복사신청 또는 장바구니 담기를 통하여 원문복사서비스 이용이 가능합니다.

이 논문과 함께 출판된 논문 + 더보기