钢管混凝土系杆拱桥用体外束控制桥墩位移的施工分析

吴光辉¹ 姚卫斌²

（上海奉贤公路建设发展有限公司¹ 上海谱鑫建设工程有限公司² ）

    摘要：下承式钢管拱系杆拱桥在拱肋安装、钢管混凝土浇筑、横梁安装和现浇横梁、桥面板湿接头时对拱脚产生的水平推力极易造成桥墩位移，通过对不同过程中的水平力计算，确定体外束张拉方案，使水平力通过体外束得以平衡。

   关键词：拱肋、体外束、张拉、水平力

  Construction analysis on pier displacement control of the through arch bridge of   concrete-filled steel tubes by externally cables

WU Guang-hui    YAO Wei-bin

 Abstract Horizontal push will arise Pier displacement of the through arch bridge of concrete-filled steel tubes under the condition  of erection of arch ribs, concreting process, transverse beam pouring and installation. With the horizontal push calculation of different course, the tension design of externally cables will be determined, and the horizontal force is balanced.

Keywords arch ribs, externally cable, tension, horizontal force