Torsional Rigidity Analysis of Long Cantilever Structure on Bridge Based on Model Test and Finite Element Method

Abstract

This paper focuses on the structural torsional rigidity problem, especially concerned in design, for a long cantilever steel-concrete composite cable-stayed bridge with single tower and single cable plane. A large scale model test is performed to make a systematical study on the structural torsion properties under different conditions. The test result indicates that the bridge has more than sufficient torsional rigidity. Finally the authors build a refined finite element model by ANSYS to discuss and analyze influencing parameters and regulations of the structural torsional rigidity.