架桥机架设T梁对柔性高墩力学表现的影响

The influence of installing T-beams on the mechanical performance of flexible high piers in bridge erecting machines

结合大跨径40 m T梁架设实际工程,通过分析实际架桥机在架设T梁的过程中对柔性高墩的几个最不利荷载组合,利用有限元软件Midas Civil建立椅柯大桥的模型,分析在几个最不利荷载组合下柔性高墩的墩顶位移、墩身最大压应力、线性屈曲特征值等判断柔性高墩的抗倾覆安全稳定性,对柔性高墩的T桥梁架设安全性具有一定的参考借鉴价值。

Based on the actual construction contract section,this paper analyzes several of the most unfavorable load combinations of the flexible high pier during the installation of the T-beam by the actual bridge erecting machine.Using the finite element software Midas Civil,a model of the Yike Bridge is established,and the anti overturning safety stability of the flexible high pier is determined by analyzing the displacement of the pier top,maximum compressive stress of the pier body,and linear buckling characteristic values under several of the most unfavorable load combinations.It has certain reference value for the safety of T-bridge beam installation with flexible high piers.