Y型巨柱斜撑高位转换结构顶升泵送混凝土施工技术

Construction Technology of Jack-up Pumping Concrete for Y Type Giant Rider Shore High-level Transfer Structure

Y型巨柱斜撑高位转换结构是一种较为复杂的钢管混凝土结构体系,基于此类结构内部带有多层加劲肋板的封闭钢管混凝土结构具有操作空间狭小,浇筑工艺困难、内部空气难以排除、混凝土成型质量不易控制的特点。本文结合西宁某工程实践,提出了一种Y型巨柱斜撑高位转换体系中高位封闭斜撑钢管自密实混凝土的泵送顶升施工技术。

Y type giant rider shore high-level transfer structure is a complex concrete-filled steel tube structure system. Based on characteristic that of ch）sed concrete-filled steel tube structure with muhilayer stiffening rib plate in inner of this type of structure has limited operation space and it is difficult to pour concrete, exhaust air and control the mohting quality of concrete. Combined with a Xining engineering practice, pumping jack-up construction technique of high-level closed rider shore in concrete-filled steel tube and self-compacting concrete in Y type giant rider shore high- level transfer system is put forward.