Steel and Composite Structures

  • 제35권1호
  • /
  • Pages.29-41
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  • 2020
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Analysis of rotational end restraint for cross-beams of railway through truss bridges

  • 투고 : 2019.07.19
  • 심사 : 2020.03.05
  • 발행 : 2020.04.10
⟨ 이전 논문 다음 논문 ⟩

초록

Cross-beams of modern through truss bridges are connected to truss chord at its nodes and between them. It results in variable rotational end restraint for cross-beams, thus variable bending moment distribution. This feature is captured in three-dimensional modelling of through truss bridge structure. However, for preliminary design or rapid assessment of service load effects such technique of analysis may not be available. So an analytical method of assessment of rotational end restraint for cross-beam of through truss bridges was worked out. Two cases - nodal cross-beam and inter-nodal cross-beam - were analyzed. Flexural and torsional stiffness of truss members, flexural stiffness of deck members and axial stiffness of wind bracing members in the vicinity of the analyzed cross-beam were taken into account. The provision for reduced stiffness of the X-type wind bracing was made. Finally, general formula for assessment of rotational end restraint was given. Rotational end restraints for cross-beams of three railway through truss bridges were assessed basing on the analytical method and the finite element method (three-dimensional beam-element modelling). Results of both methods show good agreement. The analytical method is able to reflect effects of some structural irregularities. On the basis of the obtained results the general values of rotational end restraint for nodal and inter-nodal cross-beams of railway through truss bridges were suggested.

키워드

과제정보

연구 과제 주관 기관 : Ministry of Science and Higher Education of Republic of Poland

The support of the 503218/01/12/DSPB/0627 and 503217/01/12/DSPB/0590 grants of the Ministry of Science and Higher Education of Republic of Poland is kindly acknowledged.

참고문헌

  1. Adman, R. and Saidani, M. (2013) "Elastic buckling of columns with end restraint effects", J. Constr. Steel Res., 87, 1-5, https://doi.org/10.1016/j.jcsr.2013.03.022
  2. Balazs, I. and Melcher, J. (2017), "Influence of uplift load on torsional restraint provided to steel thin-walled purlins by sandwich panels", Procedia Eng., 190, 35-42, https://doi.org/10.1016/j.proeng.2017.05.304
  3. Balazs, I., Melcher, J. and Belica, A. (2016), "Experimental investigation of torsional restraint provided to thinwalled purlins by sandwich panels under uplift load", Procedia Eng., 161, 818-824, https://doi.org/10.1016/j.proeng.2016.08.718
  4. Blum, H.B. and Rasmussen, K.J.R. (2018), "Elastic buckling of columns with a discrete elastic torsional restraint", Thin-Wall. Struct., 129, 502-511, https://doi.org/10.1016/j.tws.2018.01.008
  5. Caglayan, O., Ozakgul, K. and Tezer, O. (2012), "Assessment of existing steel railway bridges", J. Constr. Steel Res., 69, 54-63, https://doi.org/10.1016/j.jcsr.2011.08.001
  6. Cavadas, F., Rodrigues, C., Felix, C. and Figueiras, J. (2013), "Post-rehabilitation assessment of a centenary steel bridge through numerical and experimental analysis", J. Constr. Steel Res., 80, 264-277, https://doi.org/10.1016/j.jcsr.2012.09.020
  7. Durif, S., Bouchair, A. and Bacconnet, C. (2015), "Elastic rotational restraint of web-post in cellular beams with sinusoidal openings", Steel Compos. Struct., 18(2), 325-344; http://dx.doi.org/10.12989/scs.2015.18.2.325
  8. Gajdzicki, M. (2018), "Sheet-to-purlin fasteners arrangement and the value of rotational restraint of cold-formed Z-purlins", J. Constr. Steel Res., 151, 185-193, https://doi.org/10.1016/j.jcsr.2018.09.028
  9. Gao, T. and Moen, C.D. (2012), "Predicting rotational restraint provided to wall girts and roof purlins by through-fastened metal panels", Thin-Wall. Struct., 61, 145-153, https://doi.org/10.1016/j.tws.2012.06.005
  10. Lim, N.S., Tan, K.H. and Lee, C.K. (2017), "Effects of rotational capacity and horizontal restraint on development of catenary action in 2-D RC frames", Eng. Struct., 153, 613-627, https://doi.org/10.1016/j.engstruct.2017.09.059
  11. Lu, Y., Cheng, Y. and Han, Q. (2017), "Experimental investigation into the in-plane buckling and ultimate resistance of circular steel arches with elastic horizontal and rotational end restraints", Thin-Wall. Struct., 118, 164-180, https://doi.org/10.1016/j.tws.2017.05.010
  12. Marsh, K. (2016), "Autodesk Robot Structural Analysis Professional 2016: essentials", Marsh API
  13. Nguyena, P.C. and Kim, S.E. (2017), "Investigating effects of various base restraints on the nonlinear inelastic static and seismic responses of steel frames", Int. J. Non-linear Mech., 89, 151-167, https://doi.org/10.1016/j.ijnonlinmec.2016.12.011
  14. Pi, Y.L. and Bradford, M.A. (2013a), "Lateral-torsional elastic buckling of rotationally restrained arches with a thin-walled section under a central concentrated load", Thin-Wall. Struct., 73, 18-26, https://doi.org/10.1016/j.tws.2013.07.006
  15. Pi, Y.L. and Bradford, M.A. (2013b), "In-plane stability of preloaded shallow arches against dynamic snap-through accounting for rotational end restraints", Eng. Struct., 56, 1496-1510, https://doi.org/10.1016/j.engstruct.2013.07.020
  16. Pi, Y.L. and Bradford, M.A. (2013c), "Nonlinear analysis and buckling of shallow arches with unequal rotational end restraints", Eng. Struct., 46, 615-630, https://doi.org/10.1016/j.engstruct.2012.08.008
  17. Vican, J., Jost, J. and Gocal, J. (2014), "Analysis of the stringer-to-cross-beam riveted joint behaviour", Civil Environ. Eng., 10(1), 50-60, https://doi.org/10.2478/cee-2014-0007
  18. Wang, R., Huang, Y., Li, Q. and Zhen, X. (2009), "Model test and numerical analysis of a special joint for a truss bridge", J. Constr. Steel Res., 65, 1261-1268, https://doi.org/10.1016/j.jcsr.2009.02.002
  19. Wu, B. and Zhang, R. (2017), "Rotational restraint stiffness of concrete beam-slab assembly exposed to fire", Procedia Eng., 210, 479-487, https://doi.org/10.1016/j.proeng.2017.11.104
  20. Zhou, W. and Jiang, L. (2016), "Distortional buckling of cold-formed lipped channel columns subjected to axial compression", Steel Compos. Struct., 23, 331-338, https://doi.org/10.12989/scs.2017.23.3.331
  21. Zhou, W., Li, S., Huang, Z. and Jiang, L. (2016), "Distortional buckling of I-steel concrete composite beams in negative moment area", Steel Compos. Struct., 20(1), 57-70, https://doi.org/10.12989/scs.2016.20.1.057
  22. Zhou, W., Li, S., Jiang, L. and Huang, Z. (2015), "Distortional buckling calculation method of steel-concrete composite box beam in negative moment area", Steel Compos. Struct., 19(5), 1203-1219, https://doi.org/10.12989/scs.2015.19.5.1203