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根据热传导理论建立预应力混凝土箱梁桥日照温度分布的分析模型,该模型考虑气候条件、桥梁地理位置、方位、材料特性、结构尺寸、翼缘板对腹板的遮阴作用等各种因素的影响,再通过热结构耦合方法将截面上各处不同的温度转换到结构单元的截面上,从而实现箱梁桥温度应力和温度变形的计算,对ANSYS进行二次开发,利用APDL、UIDL和TCL/TK将上述功能内嵌于ANSYS软件中,方便使用。
Based on the theory of heat conduction, an analytical model of sunshine temperature distribution in prestressed concrete box girder bridges is established. The model considers various factors such as climatic conditions, geographical location of bridges, azimuths, material properties, structural dimensions, and shading effects of flange plates on webs Then, the thermal structure coupling method is used to convert the different temperatures in the cross section to the cross sections of the structural elements, so as to calculate the temperature stress and temperature deformation of the box girder bridge. The secondary development of ANSYS is carried out. APDL, UIDL and TCL / TK The above functions embedded in the ANSYS software, easy to use.