基于洗砂填充隔离法的悬挑箱梁清水混凝土结构吊板逆作施工技术  

Top-Down Construction Technology based on the Method of Washed Sand Filling to Isolation for Cantilever Box Beams and Hanger slabs of Fair-faced Concrete Structure

作　　者：孟虹 MENG Hong(Gansu Seventh Construction Group Co.,Ltd.,Lanzhou Gansu 730000,China)

机构地区：[1]甘肃第七建设集团股份有限公司,甘肃兰州730000

出　　处：《工程质量》2018年第9期47-51,共5页Construction Quality

摘　　要：为保证清水混凝土建筑局部悬挑箱梁结构达到清水混凝土的设计效果和施工质量,对箱梁结构底部吊板施工,需要打破以往传统施工顺序,采取二次逆作的施工技术。该技术通过利用洗砂填充隔离的方法,预留悬挑箱梁底部吊板逆作施工的足够空间,这样既不影响上部结构一次施工的质量,同时还能为二次结构吊板施工提供作业条件,使底部吊板钢筋与上部施工的箱梁结构钢筋锚固受力合理,混凝土浇捣握裹紧密,达到了悬挑结构吊板清水混凝土的设计装饰效果。In order to ensure that the cantilevered box beams structure of the fair-faced concrete construction achieves the design effect and construction quality of the fair-faced concrete,it is necessary to break the conventional construction sequence and adopt the construction technique of the second-time reverse construction for the construction of the hanging plate at the bottom of the box-beam structure.The technology uses the method of washing sand filling to reserve enough space for the under hanging construction of the bottom of the cantilever box beams,which will not affect the quality of the upperstructure,at the same time,can also provide work for the secondary structure hanging plate construction and make the steel reinforcement bar of the bottom hanger plate and the top box beam structure subjected to reasonable stress.Through this technology,we achieve the design and decoration effect of fair-faced concrete of the cantilevered structural hanging plate.

关 键 词：悬挑箱梁结构 洗砂填充隔离 二次逆做 施工技术 

分 类 号：TU755[建筑科学—建筑技术科学]