大跨度变曲率无支墩钢拱架施工混凝土拱桥技术

CONSTRUCTION TECHNOLOGY OF CONCRETE ARCH BRIDGE BY USING LONGSPAN VARIA BLE-CURVATURE NON-SUPPORTING-PIER STEEL ARCH CENTERING

结合运三公路吴家嘴大桥施工实践,对大跨度变曲率无支墩钢拱架的设计与安装、整体横移、砂袋卸架、缆索吊设计与安装、轻型混凝土拱圈灌注施工技术进行了总结.

Combined with the construction practice of the Wujiazui longspan bridge on Yuncheng-Sanmenxia Highway,the construction techniques of the longspan variable-curvature non-supporting-pier steel arch center- ing are summarized concerned with its design and assembly,the integral side-sliding,removing arch centering by utilizing sand bags,the design and assembly of cable hoisting system,grouting of light arch column,etc.