乌江洪家渡水电站库区复建工程六圭河特大桥施工安全控制研究

Study on construction safety control of Liuguihe extra- large bridge in rehabilitation works of Hongjiadu hydropower project

钢筋混凝土箱形拱桥缆索吊装斜拉扣挂法施工由于工艺复杂，安全因素多风险大，因此，其施工过程中的安全问题一直是业界的关注热点，安全控制成为施工成败的关键。本文以乌江洪家渡水电站库区复建工程六圭河特大桥为工程背景，对采用悬臂拼装斜拉扣挂法施工的钢筋混凝土拱桥施工过程中的安全控制进行了系统研究，并提出施工过程中影响安全的重要因素及其计算分析。

Cable - stayed suspension construction method applied in reinforced concrete box arch bridge is complex and highly risky. Therefore, the related construction safety is the key point on the construction period. Using Li- uguihe extra - large bridge as an example, the paper systematically studied the safety control measures during canti- lever erection and cable - stayed suspension construction of reinforced concrete box arch bridge, and provided major safety factors and related calculation and analysis.