支座模型对宽支座连续梁内力影响研究

Study on bearing model on internal forces of wide bearing continuous beam

针对不同支座模型对宽支座连续梁内力影响的问题,以江苏泰州某高桩码头轨道梁的内力计算为例,采用杆系有限元法对刚性支撑及弹性支撑进行分析,研究了不同的支座支撑模型对轨道梁内力的计算。研究表明,不同模型的对应内力差异较大,点支撑模型负弯矩及剪力结果偏于保守,弹性分布支撑连续梁模型考虑了支座宽度和弹性支撑的影响,应优先使用,在类似设计过程中,可增加支座宽度,有利于连续梁的内力均匀分布,使结构更加合理,对工程实践具有一定指导意义。

Aiming at the problem of the influence of different bearing models on the internal force of continuous bearing, taking the internal force calculation of a high-piled wharf in Taizhou,Jiangsu Province as an example,the finite element method is used to analyze the rigid support and elastic support. The calculation of the internal force of the track beam is studied by different bearing support model. The re-sults show that the different internal forces of different models are different, point support model negative moment and shear results are conservative, the elastic distribution support continuous beam model takes into account the influence of the bearing width and elastic sup-port ,should be given priority, in a similar design process, can increase the bearing width, is conducive to the continuous distribution of in-ternal forces even beam,make the structure more reasonable,which has certain guiding significance to engineering practice.