结合梁斜拉桥低温施工技术

Low-temperature Construction Technology of Combined Beam Cable-stayed Bridge

常温环境下进行结合梁斜拉桥的施工现在已经有一套成熟的施工技术,但目前还没有在寒冷地区进行冬季施工结合梁斜拉桥的先例。难点主要包括:钢梁线形的控制,钢梁合龙口的控制,及冬季进行湿接缝混凝土的浇筑时混凝土质量控制等。以某结合梁斜拉桥为例,对结合梁斜拉桥低温施工技术及冬季施工时的过程控制进行了讨论,有关经验可供相关专业人员参考。

There has been a set of well-known construction technology used for the construction of combined beam cable-stayed bridge under the normal temperature environment now. But at present, there is no precedent to construct this kind of bridge in winter in the cold regions. The difficulties are mainly the control of steel beam alignment, the control of steel beam closure, and the control of concrete quality in the pouring of wet joint concrete in winter. Taking a combined beam cable-stayed bridge as an example, the article discusses the low-temperature construction technology and the construction process control in winter of combined beam cable-stayed bridge. The relative experience can be referenced for the similar projects.