大跨径悬索桥钢塔塔底钢混连接处承压板后压浆施工技术  

The cement paste jacking construction techniques after the bearing plates of interconnections between the steel tower and concrete cap

作　　者：张平 蒋建 董勤军 蔡伟 刘颖 

机构地区：[1]中交二航局第二工程有限公司,重庆400042

出　　处：《中国工程科学》2010年第4期53-57,共5页Strategic Study of CAE

基　　金：国家科技支撑计划资助项目(2009BAG15B02)

摘　　要：泰州大桥为三塔两跨悬索桥,中塔纵桥向为人字型钢塔,两条斜腿在塔座顶面用螺杆锚固,通过钢塔D0段承压板与塔座顶面传递压力。塔座顶面混凝土具有双向斜坡度,在塔座顶面预留压浆空隙,待钢塔D0段安装定位后,再对预留空隙采用压浆机压入无收缩高强度水泥浆作为承压板的支承面。文章简要介绍了D0段承压板压浆施工技术及施工工艺。Taizhou Bridge is a three-tower,two-span suspension bridge with the herringbone middle tower in the longitudinal direction.The two oblique legs are anchored by screw bolts at the top of the concrete cap and the pressure plates of the D0 segment transmit pressure to the concrete cap.The top surface of concrete has bi-directional slope degrees.The space needed for concrete cement paste jacking is reserved at the top of the tower cap.After the segment D0 is installed,the concrete mud with high strength and no shrinkage is pressed into the space to form the supporting surface of the pressure plates.This paper briefly describes the concrete cement paste jacking techniques used in the construction procedure.

关 键 词：高强度 自流平 无收缩 后压浆 工艺 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]