内爬式塔吊临时支承竖向荷载分配系数研究  

STUDY ON VERTICAL LOAD-DISTRIBUTION COEFFICIENTS OF TEMPORARY SUPPORTS FOR INTERNAL CLIMBING TOWER CRANES

作　　者：张将 孙延龙 谢楠[1] ZHANG Jiang;SUN Yanlong;XIE Nan(School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;China Construction First Group Corporation Limited,Beijing 100024,China)

机构地区：[1]北京交通大学土建学院,北京100044 [2]中建一局集团第五建筑有限公司,北京100024

出　　处：《工业建筑》2021年第9期161-165,共5页Industrial Construction

基　　金：国家重点研发计划项目(2016YFC0802003)。

摘　　要：临时支承将内爬式动臂塔吊上的荷载传递给永久结构,是超高层建筑施工中的重要临时结构。以两栋超高层建筑施工时采用的两种不同内爬式动臂塔吊及临时支承为研究对象,通过有限元计算,完成了各类荷载作用下临时支承的受力分析,研究最不利荷载出现的位置和相应的竖向荷载分配系数,提出了改善外挂式塔吊临时支承竖向荷载分配不均匀性的措施,并分析了措施的有效性。Temporary supports transfer loads from tower cranes to permanent structures,which is an important temporary structure in the construction of super high-rise buildings.Two different internal climbing tower cranes and temporary supports used in the construction of two super high-rise buildings were taken as research objects.By finite element calculations,the characteristics of temporary supports subjected to various loads were analyzed.And the position where the most unfavorable loads occured and the corresponding vertical load-distribution coefficient were given.Some measures were proposed to reduced the distribution unevenness of vertical loads on temporary supports of external suspended tower cranes,and the effectiveness was analyzed.

关 键 词：临时支承 超高层建筑 内爬式塔吊 分配系数 改进方法 

分 类 号：TU974[建筑科学—建筑技术科学] TU61