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斜拉索索导管的安装定位一直是斜拉桥混凝土主塔和混凝土主梁施工的难点,其安装精度将直接影响到斜拉索的受力状况。而斜拉索的受力状况又影响到桥梁合龙时的线形,进而影响到斜拉桥的正常使用寿命。本文根据城闸大桥的施工实践,介绍和探讨了斜拉索索导管的定位施工和测控问题。
The installation and positioning of the stay cable duct has been a difficult point in the construction of the main tower and the concrete girder of the cable-stayed bridge. The installation accuracy will directly affect the stress condition of the stay cable. The stress of stay cables also affects the linear shape of the bridge and then affects the normal service life of the cable-stayed bridge. According to the construction practice of Chengzha Bridge, this paper introduces and discusses the positioning construction and measurement and control of cable-stayed cables.