Long-span self-anchored suspension bridge hoisting construction method and tower beam temporary anchoring device
A construction method and temporary anchor technology, applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of small thrust resistance stiffness of side-span pier, high construction risk, limited horizontal force, etc., and achieve simple and reliable construction technology , reduce risk factors, and speed up the construction progress
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Embodiment 1
[0051] This embodiment provides a kind of tower beam temporary anchoring device, including the first pre-embedded steel plate 4 pre-set on the side wall of the bridge tower 1 near the side of the middle span, and pre-set on the side wall of the main girder 2 of the side span near the side of the side span The second embedded steel plate 5, the first embedded steel plate 4 is fixedly installed with the first grid frame 6, the second embedded steel plate 5 is fixedly installed with the second grid frame 7, the first grid frame 6 and the second The axial centerlines of the two grid frames 7 are on the same axis parallel to the side span main beam 2 vehicle traveling direction, so that an end face of the first grid frame 6 and an end face of the second grid frame 7 are arranged oppositely, Form the action surface of the force transmission brace 8;
[0052] The two opposite end surfaces of the first grid frame 6 and the second grid frame 7 are supported by force transmission braces...
Embodiment 2
[0060] This embodiment provides a hoisting construction method for a large-span self-anchored suspension bridge using the tower beam temporary anchoring device described in Embodiment 1. During the construction process, the side span main beam 2 is supported by the tower beam temporary anchoring device. The horizontal force is transmitted to the bridge tower 1. This construction method is suitable for the double-tower three-span self-anchored suspension bridge structure in which the side-span main girder 2 is a concrete main girder and the mid-span main girder 3 is a steel main girder. It specifically includes the following steps:
[0061] Step 1, carry out foundation treatment to the foundation of the bridge tower 1 of bridge, construction pier foundation 11, bridge tower 1 and side-span bridge pier 12, such as Figure 6 shown;
[0062] Step 2, set up side-span temporary pier or support 13, cast-in-situ concrete main girder on side-span temporary pier or support 13, stretch p...
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