The Warren-type steel truss girder is currently the most commonly used stiffening girder for large-span railway suspension bridges.However,due to its complex structural form and the continuous increase of bridge span,the modeling process has become cumbersome.In order to enhance the preprocessing efficiency of multi-scale mod-els,a rapid modeling plug-in for Warren-type steel truss girders and bridge decks was developed on the basis of Py-thon language.The parameterized modeling of steel truss girder segments was realized by the interaction between kernel-executed code and the ABAQUS GUI graphical interface.Taking the SQ railway suspension bridge under con-struction in the southwest canyon area of China as an example,a multi-scale finite element model of the entire bridge was established.Wind resistance verification was carried out in the typical steel girder segment hoisting process,and the results were compared with those obtained by the finite element software MIDAS and ANSYS.The trend of wind-induced displacement response at different hoisting heights was found to be generally consistent,with small er-rors.The research results demonstrate that all the preset functions of the developed rapid modeling plug-in can be implemented normally,greatly improving the modeling efficiency of complex steel truss girder structures while ensu-ring calculation accuracy.
关键词
桥梁工程/铁路悬索桥/华伦形钢桁梁/多尺度模型/Python/二次开发
Key words
bridge engineering/railway suspension bridge/Warren steel truss girder/multi-scale model/Python/secondary development
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