Creeping Mechanism Analysis of Curved Bridges

Jiao, Chiyu; Liu, Luyu; Long, Peiheng; Su-wei, Hou

doi:10.1061/9780784413364.078

Cited by 2 publications

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“…However, diseases often occur around some curved bridges. The main cause is that the mechanical characteristics of curved bridge are different from those of straight bridge [1]. The bending-torsion coupling and uneven supporting force are the mechanical characteristics of curved bridge.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance Assessment of a Pin-bearing Restraint System for Curved Bridge

Wang

Zhao

Qin

2022

Period. Polytech. Civil Eng.

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The traditional restraint systems limit the deformation of curved bridge under temperature load, which results in radial and tangential secondary internal forces in the bridge. This paper proposes a pin-bearing restraint system (PBRS) for curved bridge, which can relax the rotational deformation of curved bridge under temperature load. Its configuration and working mechanism are illustrated. The finite element model of a curved bridge with PBRS is established using ANSYS software, and nonlinear time history analysis is conducted. The pounding force and pounding number between pin and slot under ground motion are analyzed. The pin stiffness, the gap and the ratio of upper structure mass to lower structure mass are selected for parametric study. The results show that the pounding force and pounding number present dramatic changes with pin stiffness. As the pin stiffness increases, the pounding force presents a logarithmic linear tendency, and the pounding number shows a reduce tendency. Gap has little influence on pounding force and pounding number. The radial pounding force and pounding number increase with the increase of mass ratio.

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Section: Introductionmentioning

confidence: 99%