Stress optimization analysis of long-span concrete-filled steel tube arch bridge based on Midas full-bridge finite element analysis model

Liu, Qi; Zhao, Yangyang

doi:10.1007/s43538-023-00158-w

Cited by 1 publication

(1 citation statement)

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“…The connections between the arch rib and horizontal tie rods, as well as the vertical lifting cables, all adopt a ‘Rigid connection’. The ‘Rigid connections’ are used to simulate the constraints between the vertical lifting cables and the distribution beams at the top of the overall lifting supports 20 .…”

Section: Numerical Modelmentioning

confidence: 99%

Stress and deformation analysis of the steel pipe arch integral lifting construction process of a continuous beam arch bridge

Xiang,

Xia,

Wang

et al. 2024

Sci Rep

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The Changjinghuang Railway Xinjiang Xizhi Bridge is a (90 + 180 + 90) m continuous beam arch bridge, and the arch rib steel pipe installation adopts “short bracket assembly and overall lifting method”. In order to ensure the accuracy of closure, the stress and deformation of the arch rib and bracket must be strictly controlled. Midas Civil is used to establish the finite element model to simulate the overall lifting construction process of the arch rib. Based on the model, the stress and deformation of the arch rib and the supports are analyzed, and the determination method of the horizontal cable force under temperature variations is proposed. The results show that the stress and deformation of the arch rib and bracket meet the requirements. Considering the variation of temperature, the tension force of the horizontal cables is taken as 200 t. The construction plan proposed under the guidance of numerical calculation results has been proven by practical engineering to meet the requirement of closure accuracy, which can be used as a reference for similar projects.

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Section: Numerical Modelmentioning

confidence: 99%