Span Continuous Rigid Frame Bridge Wind Load Response Study

It is necessary to study the wind resistance performance during the construction of the long span prestressed concrete rigid frame bridge with thin wall and flexible pier in the typhoon region. This paper studies the wind response of the erection stage of the long span continuous rigid frame bridge detailedly. Based on the engineering example of Tianluo Bridge with the main span of 160 meters, the wind response is fully calculated. The subject of this paper is significant in theory and practicality. And the following works have been finished:1. Introducing the development situation, the basic theory and method of numerical simulation on aerostatic force factor's calculation at home and abroad.2. Calculating the aerostatic force factor of several girder sections during erection stage by the CFD (Computational Fluid Dynamics) part in the ANSYS software according to the numerical simulation theory. Checking the aerostatic wind stability in the longest cantilever erection stage. And calculating the wind response in this stage.3. Studying the dynamic stability of Tianluo Bridge during the erection stage. Checking the galloping stability and calculating the equivalent wind load response of the turbulent wind.4. Considering the influence of the train to the bridge's wind resistance performance, developing the aerostatic force factor's numerical simulation of the bridge-train system about the Tianluo Bridge. And analyzing the influence of the wind board to the aerostatic force factor of the bridge and the train.