空心方桩和钉型双向粉喷桩复合结构在旗台的首次应用  

The First Application of Composite Structure of Hollow Square Pile and Nail Type Two-way Powder Jet Grouting Pile in Flag Platform

作　　者：倪思琦 NI Siqi(Lianyungang Port Engineering Design and Research Institute Co.,Ltd.,Lianyungang,Jiangsu,222000,China)

机构地区：[1]连云港港口工程设计研究院有限公司,江苏连云港222000

出　　处：《智能城市应用》2021年第5期25-28,共4页Smart City Application

摘　　要：一种适用于沿海深厚吹填土地基处理的复合桩型结构,包括预应力混凝土薄壁空心方桩和钉型双向搅拌粉喷桩及上部褥垫层;预应力混凝土薄壁空心方桩和钉型双向搅拌粉喷桩沿横向和纵向依次交替间隔布置,预应力混凝土薄壁空心方桩的底部打入地基持力层;预应力混凝土薄壁空心方桩的上部设置钢筋混凝土承台,钢筋混凝土承台顶面与钉型双向搅拌粉喷桩顶面处于同一高程,褥垫层铺设在预应力混凝土薄壁空心方桩和钉型双向搅拌粉喷桩的顶部,褥垫层中间铺设钢塑格栅。Acomposite pile structure suitable for coastal deep dredger fill foundation treatment,including prestressed concrete thin-walled hollow square pile,nail type bidirectional mixing powder jet pile and upper cushion layer;Prestressed concrete thin-walled hollow square pile and nail type bidirectional mixing powder jet pile are arranged alternately along the transverse and longitudinal directions,and the bottom of prestressed concrete thin-walled hollow square pile is driven into the foundation bearing layer;The upper part of the prestressed concrete thin-walled hollow square pile is provided with a reinforced concrete bearing platform,the top surface of the reinforced concrete bearing platform is at the same elevation as the top surface of the nail type bidirectional mixing powder spraying pile,the cushion layer is laid on the top of the prestressed concrete thin-walled hollow square pile and the nail type bidirectional mixing powder spraying pile,and the steel plastic grid is laid in the middle of the cushion layer.

关 键 词：搅拌粉喷桩 地基处理 方桩 复合桩型 

分 类 号：TU7[建筑科学—建筑技术科学]