Dr. Yuanbing Li Profile

Dr. Yuanbing Li

at Tongji Univ

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Proceedings Article | 9 April 2010 Paper

Global mechanical behavior of Sutong Bridge under static loads

Y. Li, Q. Zhang

Proceedings Volume 7649, 76491P (2010) https://doi.org/10.1117/12.847122

KEYWORDS: Bridges, 3D modeling, Finite element methods, Data modeling, Superposition, Numerical analysis, Calibration, Modeling, Analytical research, Numerical simulations

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The global mechanical behaviors of Sutong Bridge, China, the longest cable-stayed bridge in the world, are presented by using measurements from field static load tests compared with numerical analysis in this paper. A total of 37 loading cases with 64 test trucks, each being 300kN in weight, were conducted on 10 key sections to investigate the bridge behavior. The level of loading is about 50-88% of the code-specified serviceability load. A three-dimensional finite-element model is developed and calibrated to match the experiment data. The results show that, under the load test conditions, the incremental deflections, stresses as well as cable force of the structure are linearly proportional to the incremental loads. Moreover, the transverse shear lag effects of the steel box girder are significant and the longitudinal stress distributions in the slabs and diaphragms of the box girder are non-uniform. A good agreement is achieved between the experimental tests and the numerical simulations based on the nonlinear theories of long span bridges.

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