2010年8月施工技术 第39卷第8期CONSTRUCTIONTECHNOLOGY17
巨型落地圆环钢结构安装方案研究与分析
郭彦林'，兰涛²，赵思远'，张博浩 （1.清华大学土木水利学院，北京100084；2.西安建筑科技大学土木工程学院，陕西西安710055） [摘要】针对巨型落地圆环结构的组成特点与受力性能，提出一种全新的整体旋转起扳的施工方法，并详细论述了 圆环结构整体起扳前对其面内刚度的加强措施、临时起扳结构与设备的参数选择及要求。
在此基础上建立了多种 脚内力的大小及变化，确定了最佳的族转起扳方案。
另外，在结构制作与地面卧位拼装时采用了预变形技术，以保 证结构安装完成后保持一标准圆环造型。
通过对多种拆索方案进行对比分析，确定了采用水平顾序拆索的最佳施 工方案。
最后分析了结构安装过程中特殊节点的受力机理，进行了节点选型并提出其构造方法。
[关键词]圆环结构；整体旋转起扳；起扳参数；变形预调；拆索顺序；节点构造 【中图分类号]TU391.9[文献标识码】A【文章编号】1002-8498（2010)08-0017-07
Guo Yanlin', Lan Tao²,Zhao Siyuan', Zhang Bohao' （1.School of Civil Enginering，Tsinghu University，Bejing100084，China; 2.School of Civil Engineering， Xian Univesity of Architecture and Technology,Xian，Shaanxi710055,China) Abstract:The study of construction scheme for a rigid mega ring-shaped steel structure is presented.A renovate installation method, namely rotating and pulling ring steel structure, is developed and introduced in this study.Firstly, the ring steel structure is assembled into the whole structure in horizontal in-plane state on the ground by welding and connecting substructure together, and further is strengthened temporarily by cables. Secondly, the whole structure is arranged to rotate by pulling it into a vertical plane state and to be fixed on the ground. A time-varying FE model reflecting a full construction process was utilized to analyze the ring steel structure construction, and the obtained results will be referenced directly in structural design and construction control. In addition, pre-set construction deformations of ring steel structure result from structural gravity in the vertical state were considered in the state of ponents manufacture. The design and construction details of key joints during the installation are also proposed. d e u uo ud e re ts s puso parameter; pre-set construction deformation; removing cable sequence; joint structure 1工程概况地震不起控制作用。
圆环钢结构按照受力方式的不同分为刚性与柔性由于生命之环城市雕塑的体量巨大，施工方案的 体系两大类。
本文以沈抚新城的标志性建筑一生命选择成为实现整个建筑的成败所在。
若采用传统的胎 之环为背景，详细介绍圆环...
