双幅并制式移动模架造桥机仿真与试验对比分析  

Simulation and Experimental Analysis of Movable Scaffolding System for Double Amplitude Integral Casting Overhead Launching Gantry

作　　者：慕生勇 关泽强 桂发军 

机构地区：[1]西安特种设备检验检测院,陕西西安710064 [2]长安大学道路施工技术与装备教育部重点实验室,陕西西安710064

出　　处：《施工技术》2018年第2期81-83,共3页Construction Technology

摘　　要：以某双幅并制式移动模架造桥机作为研究对象,在多种仿真计算方法中,选择有限元软件ANSYS对该造桥机进行刚度和强度校核,并根据计算结果,为该造桥机使用前进行的预压试验确定应力和变形检测位置,并对仿真和试验数据进行对比分析。研究结果表明:仿真与实测数据相近,该造桥机满足使用条件;实测挠度值可以为预拱度调整提供参考;加载过程中,左右侧箱梁腹板应力出现偏差,在有风载施工过程中,须加强观察和检测,并对引起应力偏差的关键因素进行了定性分析;通过理论和试验对比,ANSYS在造桥机仿真计算中具有适用性。Movable scaffolding system overhead launching gantry is taken as research object,which has double amplitude integral casting function,the type of finite element software ANSYS was selected in a variety of simulation calculation method to check the rigidity and strength of overhead launching gantry.According to the results of the calculation,the stress and deformation test points were determined of preloading test,and the simulation and experimental data was compared and analyzed. The results showed that： the analysis and experimental results were basically coincide,and the overhead launching gantry meet the using conditions. The measured deflection curve could provide reference for adjusting the pre-camber. The stress on the left and right side of girder web plate stress appeared deviation in loading processing,the observation and detection should be strengthened in the construction processing,especially in the processing of wind load. The qualitative analysis of key factors to cause stress deviation had been carried out. Through theoretical and experimental contrast, ANSYS has applicability in simulation calculation.

关 键 词：双幅并制 造桥机 有限元分析 预压试验 预拱度 

分 类 号：U445.36[建筑科学—桥梁与隧道工程]