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江苏龙希大酒店0号塔顶部50 m直径的钢结构球体,位于300 m高空。球体采用悬臂安装,工序交叉复杂,钢构件分段多,安装难度大。根据施工难题进行技术攻关,托桁架采用地面组拼为整榀一次吊装和拼半榀分两次吊装两种安装方法,提高了安装效率。腰桁架下弦采取在跨中钢梁拉结的临时固定措施,保障了安装安全。下部网壳单元利用手动葫芦吊牵引并滑移至腰桁架下弦处,再二次吊起就位安装,解决了腰桁架阻碍安装的难题。利用葫芦吊、滚杠将支撑斜柱上节钢柱水平滑移至安装位置,解决了塔吊无法一次吊装就位的安装难题。
0 0, Jiangsu Longxi Hotel tower top 50 m diameter steel ball, located at 300 m altitude. Sphere with cantilever installation, process cross-complex, multi-section steel, installation difficult. According to the construction problems of technology research, truss truss ground assembly for the whole 榀 a lifting and spell 半 榀 two lifting two installation methods to improve the installation efficiency. The lower chord of the waist trusses adopts the temporary fixing measures for the tie-in of the steel beams in the span, ensuring the installation safety. The lower reticulated shell unit is pulled and slipped to the lower chord of the lumbar truss by a manual hoist crane, and then lifted in place for the second time to solve the problem that the waist trusses impede the installation. The use of gourd hoist, roll bar will support column inclined steel column horizontal slide to the installation position, to solve the tower crane can not be a lifting installation in place.