基于Midas Civil悬臂施工菱形挂篮仿真分析

Simulated Study on Rhombus Form Traveler of Cantilever Construction Based on Midas Civil

基于某桥梁工程实例展开分析,借助Midas Civil对该项目浇筑工序所用挂篮进行仿真模拟,确定了浇筑作业时挂篮的内力水平及变形情况,同时验算了挂篮结构的稳定性。结果表明,(1)挂篮悬浇梁能够起到节省材料的作用;(2)该桥箱梁的截面高度大,腹板混凝土荷载较大,底篮纵梁弹性变形接近容许值,采用分层浇筑至顶板对称施工,可以控制分层厚度;(3)挂篮施工时,需反复调整锚杆内锚固力和吊带装置;(4)挂篮施工受到风荷载侧向作用力影响时,需考虑保温材料荷载,为桥梁悬臂挂篮施工提供了指导和参考。

Based on the analysis of a bridge engineering example,the simulation of the form traveler used in the pouring process of the project is carried out with the help of Midas Civil to determine the internal force level and deformation of the form traveler during the pouring operation,and also to check the stability of the form traveler structure.The results show that the cantilever pouring beam of form traveler can play a role of saving the materials.The section height of the box girder of the bridge is large,the concrete load of the web is large,the elastic deformation of the bottom carling is close to the allowable value,and the layered pouring to the roof of symmetrical construction is adopted,which can control the layer thickness.During the construction of the form traveler,it is necessary to adjust the anchoring force and sling device in the anchor bolt repeatedly.When the construction of form traveler is affected by the lateral force of wind load,the load of insulation material should be considered,which provides the guidance and reference for the cantilever form traveler construction of bridge.