十字形截面转化为箱形截面钢骨柱节点施工技术

Construction Technology of Steel Column Joint on Crisscross Section Converted into Box Section

结合甘肃会展中心建筑群项目五星级酒店工程,重点介绍了地下结构设计特点,以及十字形转化为箱形截面的变截面钢骨柱混凝土的现场施工难点及问题;为保证转换节点处混凝土浇筑质量,先经过模拟试验,确定模板支设方法,不同截面形式混凝土浇筑顺序以及采用何种品质混凝土。详细论述了工艺流程,施工工艺,施工质量得到了保证。

Combining with engineering example on five-star hotels in Gansu Convention and Exhibition Center building group project,the authors emphatically introduce the design features of underground structure,field construction difficulties and problems of variable cross-section steel column concrete on crisscross section converted into box section.In order to ensure concrete pouring quality at transfer joint,the erection method of formwork,concrete pouring sequence with different section forms and concrete species is determined after simulation test.The authors discuss technological process and construction technique in detail,construction quality is ensured.