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综合国内外桥梁顶推合龙工艺、温度配切合龙工艺的特点,提出适合北方严寒地区及现场特点的单侧桥面吊机起吊+温度配切+精确控制合龙单缝的合龙方法——合龙段配切,单侧顶推主梁提供合龙段吊装就位空间,单侧桥面吊机起吊合龙段,一端焊接,回推主梁;另一端焊接。该文详细介绍合龙实施条件、关键施工参数、重要施工措施及实际施工情况。
Based on the domestic and international characteristics of the bridge pushing and closing process and the temperature matching and closing process, a unilateral bridging crane lifting + temperature cutting + precise control of the single-tailing and bridging method suitable for the cold region and the scene in the north is put forward. With cutting, unilateral push the main beam to provide hoisting section hoisting space, unilateral deck crane hoisting and closing section, one end of the welding, back to push the main beam; the other end of the welding. This article details the conditions for the closure of the dragon, the key construction parameters, important construction measures and the actual construction.