Author(s)

Yuhai Tian, Hengyu Zhang

Corresponding Author

Hengyu Zhang

ABSTRACT

Long-span Bridges are often particularly vulnerable to wind because of their great flexibility. The main wind-related difficulties are the large deflections caused by vibrational instability or the response of random gusts. In this paper, the dynamic response of Bridges is introduced. Meanwhile, the reaction force identification method is studied for evaluating possible inaccuracies in wind load models. In addition, a model-based joint input and state estimation method is used to identify modal wind loads from acceleration data. Various data sets under various wind conditions are also given. Based on the stress impact function, the stress finite element analysis problem is transformed into a stress integral or sum problem. At last, dynamic stress analysis under random traffic as well as the wind loads for long-span Bridges is researched.

KEYWORDS

Bridge structures, stress analysis, dynamic analysis, wind load, random traffic