超高层钢管混凝土柱侧抛免振浇筑技术  

Side Casting Vibration-free Pouring Technology of Concrete-filled Steel Tube Column in Super Tall Building

作　　者：姜继果 薛晓宏 杨磊 姜子麒 古刚 JIANG Jiguo;XUE Xiaohong;YANG Lei;JIANG Ziqi;GU Gang(No.6 Engineering Co.,Ltd.of CR20G,Xi'an,Shaanxi 710032,China)

机构地区：[1]中铁二十局集团第六工程有限公司,陕西西安710032

出　　处：《施工技术（中英文）》2021年第22期10-14,40,共6页Construction Technology

基　　金：住房和城乡建设部科技计划项目:基于智能建造理论的超高层建筑临时支撑结构安全控制关键技术研究(2021-K-077)。

摘　　要：为解决钢管混凝土配合比设计、钢管截面设计、质量保障措施等技术问题,介绍一种超高层钢管混凝土柱侧抛免振浇筑技术,利用超声波检测法验证其可靠性,并基于正交试验实现在核心区混凝土内生成随机缺陷,利用有限元计算分析缺陷率、缺陷形状和缺陷位置对钢管混凝土轴压承载能力的影响。结果表明,缺陷率对结构承载力影响最明显。该技术施工速度快、施工效率高,对泵送设备要求低。In order to solve technical problems such as concrete mix design, steel pipe section design and quality assurance measures, a side casting vibration-free pouring technology of concrete-filled steel tube column in super tall building is introduced. Its reliability is verified by ultrasonic detection method, and random defects are generated in the concrete core area based on orthogonal test. The effects of defect rate, defect shape and defect location on the axial compression bearing capacity of concrete-filled steel tubular are analyzed by finite element calculation. The results show that the defect rate has the most obvious effect on the bearing capacity of the structure. This technology has the advantages of fast construction speed, high construction efficiency and low requirements for pumping equipment.

关 键 词：高层建筑 混凝土 侧抛免振捣 有限元分析 施工技术 

分 类 号：TU528[建筑科学—建筑技术科学]