Discrete analytical model for lateral mechanical behavior of cable-saddle system in suspension bridges

Wang, Lu; Shen, Ruili; Ma, Niujing; Zhang, Songhan; Gu, Liangcai; Wang, Ronghui

doi:10.1016/j.engstruct.2020.111087

Cited by 9 publications

(3 citation statements)

References 19 publications

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“…When considering the influence of the elastic extension of the main cable on its dead weight concentration, the linear equations of the main cable are unified in Eqs. (1) and (2).…”

Section: Analysis Of the Main Cable Tensionmentioning

confidence: 99%

“…A detailed analysis of the ideal equilibrium conditions of the cable saddle was performed in Ref. 22 and it was considered that the equilibrium conditions of the tower saddles should fulfil the undermentioned requisites: (1) the tension of the main cable on the two sides of each tower saddle are equal; (2) the horizontal components of the main cable force on the two sides of each tower saddle are equal; (3) the projection of the main cable tension along the sliding surface of the saddle are equal. For common tower saddles, it can be guaranteed that the projection of the main cable tension along the sliding surface of the saddle is equal because of the horizontality of the tower.…”

Section: Selection Of Balance Conditions For Tower and Splay Saddlesmentioning

confidence: 99%

“…In the suspension bridge, cable saddles are the main structures utilized to provide the main cable with support and to smoothly change the configuration of the main cable. The tower saddles, installed on top of the towers, transmit the perpendicular cable tensile force to the towers, while the splay saddles are located on top of the main cable trestles, which support, turn, and disperse the strands of the main cable 1 , 2 . Cable saddles are used to turn the main cables and can therefore directly constrain the deformation of the main cables 3 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Deng

Zhao

2022

Sci Rep

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By analysing the mechanical and geometrical relations between the main cable, tower, and splay saddles, and considering the coupling effect of the tower and splay saddles, an improved algorithm is proposed to determine the cable saddles pre-offsets of suspension bridges. The equilibrium relationship of the cable saddles, the compatible deformation condition, and the basic equation of the main cable shape are considered to establish several coupled non-linear equations up to 19, and the tower and splay saddle pre-offsets are obtained by solving the above equations with the Newton–Raphson method. This paper presents the initial value selection principle and the constraint conditions for solving the cable saddle pre-offsets of the plane cable suspension bridge and the calculation process ensures convergence. The calculation example demonstrates that the improved algorithm without an exact initial value can achieve excellent convergence.

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“…When considering the influence of the elastic extension of the main cable on its dead weight concentration, the linear equations of the main cable are unified in Eqs. (1) and (2).…”

Section: Analysis Of the Main Cable Tensionmentioning

confidence: 99%

Section: Selection Of Balance Conditions For Tower and Splay Saddlesmentioning

confidence: 99%