Cable Forces Optimization Loading and Test Result in the Model Test for the Pylon of the Joint-pylon Cable-stayed Bridge with Four Cable Planes and Twin Separate Girders

  • Zhaofeng Liu, Dengfa Tang, Kunxiang Tang

Abstract

One of the schemes of Yongjiang super-large bridge is a cable-stayed bridge with four cable planes, united twin-pylons and twin separate prestress concrete girders. The joint part of twin-united pylons is under combined torsion, flexure and shear. The force state in separate twin bridges is in coupling conditions. In order to assuring the safety and credibility of the united twin-pylons, the test for the whole pylon is made with a scale-down model of 3: 40. The most critical conditions of the pylon are simulated by tensioning cables. In order to tension the least cables, mathematical programming models and numerical programs for the least cables are created. The equivalent cable forces and the tension forces under different load levels are determined. The optimization cable forces and test cable forces are compared and analyzed. The result shows that the optimization method is feasible and the interaction of cable forces between united twin-pylons is less.

Published
2020-11-30
How to Cite
Zhaofeng Liu, Dengfa Tang, Kunxiang Tang. (2020). Cable Forces Optimization Loading and Test Result in the Model Test for the Pylon of the Joint-pylon Cable-stayed Bridge with Four Cable Planes and Twin Separate Girders. Design Engineering, 221 - 228. https://doi.org/10.17762/de.vi.904
Section
Articles