附着全钢升降脚手架不同步升降性能研究  

Research on Asynchronous Lifting Performances of All-Steel Integrated Attached Lifting Scaffolds

作　　者：杨伟[1] YANG Wei(China Railway 18th Bureau Group Construction and Installation Engineering Co.,Ltd.,Tianjin 300308,China)

机构地区：[1]中铁十八局集团建筑安装工程有限公司,天津300308

出　　处：《工业建筑》2022年第3期150-157,共8页Industrial Construction

摘　　要：为研究附着升降脚手架不同步升降性能,采用全钢型集成式附着升降脚手架作为试验架体,测量升降过程中主要受力构件的应力变化。在ABAQUS中建立架体的有限元模型,根据试验结果验证有限元分析的正确性。在此基础上,进行了32个工况下的不同步运动性能分析。研究结果表明:相邻机位位移差超过30 mm、机位超载和机位失载任何一种工况发生时,机位的不同步系数最大值为2.33,最小值为1.16,平均值为1.82。目前JGJ 202—2010《建筑施工工具式脚手架安全技术规范》中规定的荷载不均匀系数为2.0,基于分析,建议提高荷载不均匀系数至2.35或者降低允许的机位位移差,以保证升降脚手架的安全使用。In order to study the asynchronous lifting performance of the attached lifting scaffold,the all-steel integrated attached lifting scaffold was used as the test frame to measure the stress changes of the main stressed components during the lifting process.The finite element model of the frame was established in ABAQUS and the correctness of the finite element analysis results was verified according to the test results.On this basis,the asynchronous motion performance under 32 working conditions was analyzed.The results showed that when the displacement difference between adjacent hoister exceeded 30 mm or when the hoister overload and hoister load loss occurred,the maximum asynchronous coefficient was 2.33 and its minimum was 1.16.Its average value was 1.82.At present,the non-uniformity coefficient of load was 2.0 in the Safety Technical Code for Construction Tool Scaffold(JGJ 202-2010).Based on the analysis results,it was suggested to increase the non-uniformity coefficient of load to 2.35 or decrease the allowable position displacement difference to ensure the safe using of lifting scaffold.

关 键 词：全钢型集成式附着升降脚手架 不同步升降试验 有限元分析 不同步性能 机位荷载 

分 类 号：TU731.2[建筑科学—建筑技术科学]