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异形钢结构在施工过程中,存在着起吊、定位、固定难等特点。沈抚新城“生命之环”主体结构主要为混凝土基础和三角形变截面钢管桁架组成的环状结构体系,分段构件采用现场胎架整体拼装,大型履带式起重机起吊回直,并通过相关措施调节至吊装角度,安装到位并固定。本工程特制的自平衡系统索具很好地解决了构件体型大、截面异形、重心难确定等问题。重点介绍了该索具的工作方式及其吊装角度调整。
Special-shaped steel structure in the construction process, there is lifting, positioning, fixed difficult characteristics. Shen Fu new city “ring of life ” main structure is mainly composed of concrete foundation and triangular cross-section of steel truss ring structure system, the segmental components of the overall use of on-site tire rack assembly, large crawler crane lifting straight back, and through the relevant Measures to adjust the lifting angle, installed in place and fixed. The special self-balancing system rigging of the project can well solve the problems of large body size, abnormal profile and difficulty in determining the center of gravity. The work mode of rigging and adjustment of lifting angle are mainly introduced.