Suspension cable bridge abutment type pre-stress anchorage
A prestressing and bridge pier technology, applied in the direction of suspension bridges, bridge forms, bridges, etc., can solve the problems of gravity anchorage construction difficulty, large excavation volume of gravity anchorage, and low effectiveness efficiency, so as to shorten the anchorage construction period, The effect of reducing project cost and reducing anchorage project cost
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Embodiment 1
[0032] Such as Figure 1-Figure 4-c As shown, a suspension bridge pier type prestressed anchorage, it includes steel structure concrete cap 1, steel pipe pile group 2, prestressed anchor cable group 3, main cable 4 and main cable anchorage system 5, the steel pipe The pile group 2 is composed of steel pipe vertical piles 2A and steel pipe inclined piles 2B. Intersecting vertical pile supports 2C are arranged between the steel pipe vertical piles 2A. One end of the vertical pile 2A and steel pipe inclined pile 2B extends into the bedrock, and the other end is rigidly connected to the bottom surface of the steel structure concrete cap 1, and the strands of the main cable 4 loosened are connected to the main cable anchorage system 5, and the main cable The anchor system 5 is set on the upper surface of the steel structure concrete cap 1, and the prestressed anchor cable group 3 is composed of a series of single prestressed anchor cables with a tonnage of 500t; each single prestre...
Embodiment 2
[0036] Using the structure of embodiment 1, the specific quantity and inclination angle are changed. The prestressed anchor cable group 3 is composed of a series of prestressed anchor cables with a single tonnage of 200t or 300t; The included angle of the cable direction is 0° or 10°, so as to ensure that the overall force direction of the prestressed anchor cable group is close to the direction of the main cable, so that the steel pipe piles are not stressed or only bear a small part of the pressure in the bridge state.
[0037] The steel pipe vertical pile 2A is composed of 8 or 18 steel pipes with a diameter of 2m, and the steel pipe inclined pile 2B is composed of 4 or 8 steel pipes with a diameter of 2m, and the inclination angle is 15° or 20°. When the prestressed anchor cable group 3 is composed of a series of prestressed anchor cables with a single tonnage of 200t, the design cable force of the main cable is 20,000 tons, and the number of prestressed anchor cables is 10...
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