Comparative analysis of calculation methods for Cable Curve of Landscape Suspension Bridges

Abstract

The main cable curve control of landscape suspension bridge is not only the premise of achieving the ideal completed state, but also the key problem of suspension bridge construction control. By analysing the characteristics of the main cable of anchored double tower landscape suspension bridge, the analytical equations for calculating the main cable curve of suspension bridge are derived by parabolic method and segmented catenary method. Then combined with practical work, the main cable curve was calculation methods by using the two calculation methods. Results show that both the parabolic method and the catenary method can be used for the preliminary design of the main cable curve of the landscape suspension bridge, but the segmented catenary method with repeated revision iteration has higher accuracy.

Comparative Analysis of Strength Calculation for Railway’s Flat Car Body Using Fuzzy Logic and Evolutionary Algorithms

“…Now, the nite element method has been widely recognized in the treatment of physics, mechanics, and engineering. During this period, a large number of general nite element programs have also been rapidly developed and widely used [5].…”

Improved algorithm for determining cable saddle pre-offsets considering the coupling effect of tower and splay saddles

“…The calculation of the cable saddle preoffsets requires solving several coupled non-linear equations composed of Eqs. (4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22) and reaching up to 19. The simultaneous equations can then be worked out by the Newton-Raphson method.…”

“…These unbalanced forces may cause displacement of the towers and slippage of the cable strands in the saddles. Moreover, this will affect the safety of the entire bridge [4][5][6][7] . Therefore, to guarantee the safety of the suspension bridge construction, it is essential to consider the tower and splay saddles pre-offsets 8,9 .Cable saddle pre-offset calculations for suspension bridges mostly use finite element methods or numerical analytical methods [10][11][12][13] .…”

“…These unbalanced forces may cause displacement of the towers and slippage of the cable strands in the saddles. Moreover, this will affect the safety of the entire bridge [4][5][6][7] . Therefore, to guarantee the safety of the suspension bridge construction, it is essential to consider the tower and splay saddles pre-offsets 8,9 .…”