摘要
通过计算机分析,确定合理的拱桁架安装顺序。拱桁架基础安装于劲性环梁上,钢拱支撑体系以格构柱为主。拱桁架分段施工,采用三点吊装方式,首节桁架在中部形成五联体稳定结构,逐步向上及两侧推进施工,待单体吊装合龙后同步卸载,顺利完成拱桁架施工。
Through computer analysis,the reasonable installation sequence of arch truss is determined.Arch truss foundation is installed on stiff ring beam,and lattice column is the main supporting system of steel arch. In the construction of arch truss,three-point hoisting method is adopted. Five-joint stable structure is formed in the middle of the first truss,and construction is progressively advanced up and on both sides. The construction of arch truss can be completed smoothly by synchronous unloading after the hoisting and closing of the single truss.
引文
[1]范优铭,夏群.宜兴大剧院大跨度空间桁架钢结构施工过程模拟研究[J].施工技术,2018,47(17):106-109,118.
[2]罗艺,陈鹏,郑志辉,等.大跨度悬挑管桁架结构施工技术[J].施工技术,2018,47(11):144-145.
[3]陈峰,李键,郝海龙,等.北京海淀展览馆大跨度预应力管桁架安装技术[J].施工技术,2018,47(8):8-10.
[4]曾文涛,崔志勇,陈建龙,等.广发证券大厦屋顶大跨度钢结构门架施工技术[J].施工技术,2018,47(2):4-8,13.
[5]王泽曦,罗杰,肖建春,等.安顺市体育中心体育场大跨度悬挑结构卸载方案研究[J].施工技术,2017,46(18):26-29.
[6]陈海峰,刘晓伟,吴先杰,等.大跨度空间管桁架分区连续累计卸载施工技术[J].施工技术,2017,46(15):34-37,53.
[7]冶金工业部建筑研究总院.钢结构工程施工质量验收规范:GB50205—2001[S].北京:中国计划出版社,2002.
[8]中冶京诚工程技术有限公司.钢结构设计标准:GB50017—2017[S].北京:中国计划出版社,2017.
[9]中冶建筑研究总院有限公司,中国二冶集团有限公司.钢结构焊接规范:GB50661—2011[S].北京:中国建筑工业出版社,2012.