EXPERIMENTAL RESEARCH ON DYNAMIC AMPLIFICATION FACTORS OF VERTICAL LOADS ON TEMPORARY SUPPORTS FOR INNER CLIMBING TOWER CRANES OF SHENWAN HUIYUN CENTER DURING CLIMBING STAGES
-
摘要: 爬升阶段是内爬式塔吊临时支承十分不利的工况,由于受力时间较短,竖向荷载会产生明显的动力效应。依据建筑高度近350 m的深湾汇云中心J座塔楼的实测数据,分析了荷载作用下临时支承的内力和变形特征,揭示了临时支承中不同部位杆件的受力特点,并给出了不同部位杆件的竖向荷载动力放大系数。有限元分析结果表明,采用荷载放大系数的仿真计算结果和实测结果较为接近。Abstract: The climbing stage is a very unfavorable load case for the temporary supports of internal climbing tower cranes. Due to the short action time of loads, the vertical loads will make obvious dynamic effects. Based on measured data the Tower J of Shenwan Huiyun Center with a construction height of nearly 350 m, the characteristics of bending moment and deformation of the temporary supports subjected to loads were analyzed. The characteristics of the structural members of the temporary support were obtained and the dynamic amplification factors of vertical loads were given. The finite element analysis results showed that the simulation results using the dynamic amplification factors were close to the actual measurement results.
-
[1] 罗宏. 超高层建筑大型塔机施工案例[M]. 北京:中国建筑工业出版社, 2013. [2] 王伍仁. 上海环球金融中心施工方案精选[M]. 北京:中国建筑工业出版社, 2011. [3] 郁政华, 陈晓明, 吴欣之, 等. 广州新电视塔外挂内爬式塔式起重机应用技术[J]. 施工技术, 2009, 38(4):38-39. [4] 宋胜录, 钱耀辉, 陈晋, 等. 上海中心大厦工程M1280塔吊爬升框应力监测[J]. 建筑施工, 2011, 33(9):835-837. [5] 黄熙萍, 吕俊杰, 鲁雅军, 等. 超高层建筑内爬外挂塔式起重机循环组合挂架测试技术[J].施工技术,2015,44(14):92-94. [6] 徐宪武. 超高层内爬外挂塔式起重机循环组合挂架作业状态下受力分析及研究[J].施工技术,2016,45(9):34-38. [7] 中昇建机(南京)重工有限公司. ZSL850型塔吊说明书[M].南京:中昇建机(南京)重工有限公司,2013. [8] 李斌, 崔健. 塔式起重机附着装置处塔身结构受力状态研究[J]. 建筑机械, 2015(8):30-33. [9] 张将,孙延龙,谢楠. 内爬式塔吊临时支撑竖向荷载分配系数研究[J]. 工业建筑,2021,51(9):167-171.
点击查看大图
计量
- 文章访问数: 57
- HTML全文浏览量: 3
- PDF下载量: 0
- 被引次数: 0