超高层内爬式动臂塔式起重机支撑体系力学模型与加固验算

Mechanical Model and Reinforcement Checking Calculation of Support System of Super High-Rise Internal Climbing Boom Tower Crane

针对珠海市珠澳湾世纪中心项目A栋超高层建筑,通过有限元分析软件Midas Civil对支承内爬式动臂塔式起重机的钢支撑梁及混凝土主体结构进行模型建立,计算多种工况下塔吊荷载包络值,并依据每个构件支座的实际连接传力方式设置铰接、刚接节点,通过软件进行各构件建模,使荷载传递情况尽可能与实际情况一致,分析结构梁及加固钢斜撑在承受内爬式动臂塔吊荷载中的应力表现,为结构加固方案提供计算依据,为施工安全提供保证。

In this paper,aiming at a super-high-rise building of Zhu’aowan Century Center Building A,the steel support beam and concrete main structure supporting inner-climbing boom tower crane are established by finite element analysis software Midas Civil.The load envelope values of the tower crane under various conditions are calculated,and the pin-joint and rigid joints are set according to the actual connecting force transfer mode of each member support.Modeling of each member by software makes the load transfer as consistent as possible with the actual situation,it can be used to analyze the stress performance of structural beam and reinforced steel diagonal brace under the load of inner-climbing boom tower crane,whichi can provide calculation basis for structural reinforcement scheme and guaranteeing construction safety.