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http://dx.doi.org/10.12989/sem.2008.30.5.559

A simplified analysis of the behavior of suspension bridges under live load  

Stavridis, Leonidas T. (Structural Engineering, National Technical University of Athens)
Publication Information
Structural Engineering and Mechanics / v.30, no.5, 2008 , pp. 559-576 More about this Journal
Abstract
Having established the initial geometry and cable force of a typical three span suspension bridge under permanent load, the additional maximum response of the cable and the stiffening girder due to live load are determined, by means of an analytic procedure, considering the girder first hinged at its ends and then continuous through the main towers. The problem of interaction between the cable and the stiffening girder is examined taking under due consideration the second order effects, whereby, through the analogy to a fictitious tensioned beam under transverse load, a closed -form solution is achieved by means of a simple quadratic equation. It is found that the behavior of the whole system is governed by five simple dimensionless parameters which enable a quick determination of all the relevant design magnitudes of the bridge. Moreover, by introducing these parameters, a set of diagrams is presented, which enable the estimation of the influence of the geometric and loading data on the response and permit its immediate evaluation for preliminary design purposes.
Keywords
suspension bridge; stiffening girder; static analysis; design;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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1 Arzoumanidis, S.G. and Bienek, M.P. (1985), 'Finite element analysis of suspension bridges', Comput. Struct., 21(6), 1237-1256   DOI   ScienceOn
2 Brotton, D.M. and Arnold, G. (1963), 'The solution of suspension bridge problems by digital computers', Struct. Eng., 41(7), 213-222
3 Cheng, J. and Xiao, R.C. (2006), 'Application of inverse reliability method to estimation of cable safety factors of long span suspension bridges', Struct. Eng. Mech., 23(2), 195-207   DOI   ScienceOn
4 Clemente, P., Nicolosi, G. and Raithel, A. (2000), 'Preliminary design of very long-span suspension bridges', Eng. Struct., 22(12), 1699-1706   DOI   ScienceOn
5 Cobo del Arco, D. and Aparicio, A.C. (2001), 'Preliminary static analysis of suspension bridges', Eng. Struct., 23(9), 1096-1103   DOI   ScienceOn
6 Imai, K. and Frangopol, D. (2000), 'Response prediction of geometrically nonlinear structures', J. Struct. Eng., ASCE, 126(11), 1348-1355   DOI   ScienceOn
7 Jennings, A. and Mairs, J.E. (1972), 'Static analysis of suspension bridges', J. Struct. Div., ASCE, 98(11), 2433-2455
8 Liu, C., Wang, T.L. and Qin, Q. (1999), 'Study on sensitivity of modal parameters for suspension bridges', Struct. Eng. Mech., 8(5), 453-464   DOI   ScienceOn
9 O'Connor, C. (1971), Design of Bridge Superstructures, Wiley, New York
10 Roik, K. (1983), Steel Structures (in German), Wilhelm Ernst & Sohn, Berlin
11 Ryall, M.J., Parke, G.A.R. and Harding, J.E. (2000), Manual of Bridge Engineering, Thomas Telford Publishing, London
12 Steinman, D.B. (1935), 'A generalized deflection theory for suspension bridges', Trans. ASCE, 100, 1133-1170
13 Timoshenko, S. (1943), 'Theory of suspension Bridges', J. Franklin Inst., 235(3), 231-238; 235(4), 327-349
14 Timoshenko, S. (1956), Strength of Materials Part II, D. Van Nostrand Company Inc., New York
15 W.F. Chen and Lian, Duan (1999), Bridge Engineering, CRC Press, Florida U.S.A
16 Wollmann, G.P. (2001), 'Preliminary analysis of suspension bridges', J. Bridge Eng., ASCE, 6(4), 227-233   DOI