双幅整体浇筑式造桥机安全性分析与试验

发布时间：2018-04-23 23:14

本文选题：双幅整体浇筑 + 移动模架　；参考：《中国工程机械学报》2017年04期

【摘要】：以MSS50双幅整体浇筑式移动模架造桥机作为研究对象,利用有限元软件对该造桥机整体结构进行刚度和强度校核,并依据计算结果,确定了该造桥机各重要部位的应力和变形检测位置,在造桥机使用前进行预压载试验,对检测位置要进行全程监控.研究结果表明,理论分析与实测结果基本吻合,该造桥机满足强度和刚度要求,实测挠度曲线可以为施工中预拱度调整提供参考.由于实际加载过程中主梁上承受载荷的不均匀性,各测点应力并非按线性规律变化,甚至出现瞬时应力超过最大载荷情况下的应力,因此,对加载过程进行监控是必要的.由于该双幅整体浇筑式移动模架造桥机结构庞大,受加工和安装误差影响,在加载过程中左右侧支腿受力出现一定偏差和不均匀性,这在施工过程中,尤其在有风载施工过程中,应加强观察和检测.该研究成果也可以为其他移动模架设计及施工提供参考.
[Abstract]:In this paper, the MSS50 double-piece monolithic moving mold frame bridge-making machine is used as the research object. The stiffness and strength of the whole structure of the bridge maker are checked by using the finite element software, and the results of calculation are used to verify the stiffness and strength of the whole structure of the bridge-making machine. The stress and deformation detection positions of each important part of the bridge maker were determined. The pre-ballast test was carried out before the use of the bridge maker, and the detection position should be monitored in the whole process. The results show that the theoretical analysis is in good agreement with the measured results and the bridge construction machine can meet the requirements of strength and stiffness. The measured deflection curve can provide a reference for the adjustment of pre-arch in construction. Because of the inhomogeneity of the load bearing on the main beam during the actual loading, the stress of each measuring point does not change according to the linear law, and even the instantaneous stress exceeds the maximum load, so it is necessary to monitor the loading process. Due to the large structure of the double-piece monolithic moving mould frame bridge construction machine, which is affected by the processing and installation error, the force of the left and right side legs is deviated and uneven during the loading process, which is in the process of construction. Especially in the process of wind-loaded construction, we should strengthen observation and detection. The research results can also provide reference for the design and construction of other mobile die frames.
【作者单位】：山东恒X机械有限公司;长安大学道路施工技术与装备教育部重点实验室;
【分类号】：U445.3

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