简支转连续超高大跨非标钢筋桁架楼承板施工技术

Transformation Construction of Simply Supported Span to Continuous Span of Super High Large Span Non-standard Steel Truss Deck

针对长沙冰雪世界项目钢筋桁架楼承板跨度超出其常规最大承载跨度的问题,通过多种方案比选,确定采用施工简单、经济合理、安全可靠的简支转连续钢筋桁架楼承板的施工方法。重点阐述简支转连续的施工工艺及其施工阶段挠度验算,简支跨转换为连续跨的验算结果能满足本项目需求。结果表明,超高大跨非标钢筋桁架楼承板采用简支转连续的施工技术合理、可靠。

In view of the problem that the span of steel truss deck of Changsha Ice and Snow World exceeds its normal maximum bearing span,the construction method of transforming simply supported span to continuous span is determined through comparison and selection of various schemes,which is simple,economic,and reliable.This paper focuses on the construction technology of simply supported span to continuous span and the checking calculation of deflection on the construction stage.All the results of continuous span can satisfy the needs of this project.The engineering results show that the construction method of transforming simply supported super high large span non-standard steel truss deck to continuous span is suitable.