基于施工控制理论的指环型摩天轮成型方法

Construction method of ring-shape ferris wheel structure based on process control theory

为使特殊的指环型摩天轮——常州紫荆公园景观塔顺利建造成型,基于施工控制理论,对景观塔的建造及施工控制方法进行研究.确定了两侧对称竖立悬臂安装方法,并借助辅助桅杆及拉索等措施,对结构施加临时预应力,实施安装过程的施工控制.施工控制以成型后结构整体形态控制为主,同时保证施工及成型后结构内力满足承载力要求,并兼顾调控效率最大的原则.设计调控程序,利用ANSYS程序二次开发,迭代计算拉索的张拉力.对结构成型过程进行时变模拟分析,成型后结构的变形满足控制要求,施工中及成型后钢结构应力满足承载力要求.

To make the Bauhinia Park View Tower in Changzhou-the special ring-shape Ferris wheel construct successfully,the paper researched the installation and process control method which was based on the theory of process control.The cantilevered symmetrical installation method was adopted and the process control scheme was implemented by prestressing the structure,with the help of masts and cables and other auxiliary facilities.The main principle of the process control was to control the whole shape after construction.Besides,the structure internal force was controlled.In addition,the efficiency of process control must be higher.The process control scheme was devised,and then the secondary development technology based on ANSYS was applied to iterative calculate the cables tension.By time-varying simulating and analysis,it indicated that the deformation after construction met the controlled demand.The internal force during installation and after construction met the demand of bearing capacity.