Structural Engineering and Mechanics

  • 제34권6호
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  • Pages.739-753
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  • 2010
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Pretension process control based on cable force observation values for prestressed space grid structures

  • Zhou, Zhen (Key Laboratory of RC & PC of Ministry of Education, Southeast University) ;
  • Meng, Shao-Ping (Key Laboratory of RC & PC of Ministry of Education, Southeast University) ;
  • Wu, Jing (Key Laboratory of RC & PC of Ministry of Education, Southeast University)
  • 투고 : 2009.05.19
  • 심사 : 2009.12.28
  • 발행 : 2010.04.20
⟨ 이전 논문 다음 논문 ⟩

초록

Pointing to the design requirement of prestressed space grid structure being the target cable force, the pretension scheme decision analysis method is studied when there's great difference between structural actual state and the analytical model. Based on recursive formulation of cable forces, the simulative recursive system for pretension process is established from the systematic viewpoint, including four kinds of parameters, i.e., system initial value (structural initial state), system input value (tensioning control force scheme), system state parameters (influence matrix of cable forces), system output value (pretension accomplishment). The system controllability depends on the system state parameters. Based on cable force observation values, the influence matrix for system state parameters can be calculated, making the system controllable. Next, the pretension scheme decision method based on cable force observation values can be formed on the basis of iterative calculation for recursive system. In this way, the tensioning control force scheme that can meet the design requirement when next cyclic supplemental tension finished is obtained. Engineering example analysis results show that the proposed method in this paper can reduce a lot of cyclic tensioning work and meanwhile the design requirement can be met.

키워드

참고문헌

  1. Chen, Y. and Zhou, Z. (2005), "Prestressing analysis and inspection for hybridized structure composed of prestressed reticulated shell and steel arch", Proceedings of the International Symposium on Innovation and Sustainability of Structures, Nanjing, China.
  2. Dong, S. and Yuan, X. (2007), "Pretension process analysis of prestressed space grid structures", J. Constr. Steel Res., 63(3), 406-411. https://doi.org/10.1016/j.jcsr.2006.04.006
  3. Greschik, G. (2008), "Truss beam with tendon diagonals: Mechanics and designs", AIAA J., 46(3), 557-567. https://doi.org/10.2514/1.25249
  4. Han, Q.H., Yuan, Z.H., Ying, M. and Liu, X.L. (2005), "Numerical analysis and experimental study of prestressed diagonal-on-square composite space truss", Adv. Struct. Eng., 8(4), 397-409. https://doi.org/10.1260/136943305774353115
  5. Levy, R., Hanaor, A. and Rizzuto, N. (1994), "Experimental investigation of prestressing in double-layer grids", Space Struct., 9(1), 21-26. https://doi.org/10.1177/026635119400900103
  6. Li, Y., Zhang, Y. and Yang, Q. (2004), "Determination of cable forces during construction for cable-supported lattice shells", J. Build. Struct., 25(4), 76-81. (in Chinese)
  7. Saitoh, M. and Okada, A. (1999), "The role of string in hybrid string structure", Eng. Struct., 21(8), 756-769. https://doi.org/10.1016/S0141-0296(98)00029-7
  8. Hosozawa, O., Shimamura, K. and Mizutani, T. (1999), "The role of cables in large span spatial structures: introduction of recent space structures with cables in Japan", Eng. Struct., 21(8), 795-804. https://doi.org/10.1016/S0141-0296(98)00032-7
  9. Swanson, J.A. (2002), ANSYS User's Manual, Version 6, Analysis systems Inc., Canonsburg.
  10. Tibert, A.G. (2003), "Optimal design of tension truss antennas", Proceedings of the 44th AIAA/ASME/ASCE/AHS Structures, Structural Dynamics, and Materials Conference, Norfolk, April.
  11. You, Z. (1997), "Displacement control of prestressed structures", Comput. Meth. Appl. Mech. Eng., 144, 51-59. https://doi.org/10.1016/S0045-7825(96)01164-4
  12. Zhang, G., Ge, J., Qin, J., Wang, S., Wang, Z. and Wang, J. (2007), "Simulating analysis of prestressing construction process of the suspend-dome of the badminton gymnasium for 2008 Olympic Games", J. Build. Struct., 28(6), 31-38. (in Chinese)
  13. Zhuo, X. and Ishikawa, K. (2004), "Tensile force compensation analysis method and application in construction for hybrid structures", Space Struct., 19(1), 39-46. https://doi.org/10.1260/026635104322988353