基于梁格法的简支桥梁承载能力评定

Evaluation Based on Carrying Capacity of Bridge Simply Supported Beam Grid Method

文章针对某一宽简支桥梁,采用梁格法建立此桥梁的有限元模型,通过荷载试验静动载与理论值对比分析,研究采用梁格法理论分析与实测值的区别。对比分析梁格法有限元模型计算所得的结果与试验结果,发现梁格法可有效地确定出桥梁关键截面的挠度和内力。利用本方法进行的荷载试验计算值与试验值相吻合,其结果对类似工程有一定参考借鉴的价值。

For a wide simply supported bridge, articles grillage method using a finite element model of this bridge, dynamic load analysis and coMParison of the theoretical values of static load test, study grillage method of theoretical analysis and found worthy of distinction.CoMParative analysis and experimental results on grillage method finite element model calculated and found grillage method can effectively determine the deflection and internal force of bridge critical section.Load Test and experimental values calculated using the present method is relatively consistent, the result of a reference for similar projects have a certain value.