A single-tower cable-stayed bridge with an asymmetric planar fold line layout and its construction method

Abstract

The invention relates to a single-tower cable-stayed bridge with a bridge deck arranged in an asymmetric plane broken line and a construction method thereof, which belongs to a cable-stayed bridge with a bridge deck arranged in an asymmetric plane fold line and a construction method thereof. Including asymmetrical pyramidal bridge towers and piers at both ends, the two ends of the long bridge deck and the short deck are fixedly connected to the asymmetrical pyramidal bridge towers and piers respectively, and the two ends of the stay cables are respectively connected to the asymmetrical pyramidal bridge piers. The tower column of the tower is connected with the bridge deck, and the two sides of the long bridge deck or the short bridge deck are respectively fixedly connected with arc-shaped damping cables. The invention can be used in the structural design of hydraulic wading cable-stayed bridges, the technology is simple and easy to implement, the angle of the broken line can be set at an angle of 0 to 30 degrees according to the demand, and the damping cable is set, which not only improves the seismic capacity of the cable-stayed bridge, but also effectively Limit the displacement of the bridge deck, increase the stability of the bridge deck when passing, and the cable protection method has a long-term effect.

Description

technical field [0001] The invention belongs to a cable-stayed bridge with an asymmetric planar broken line layout and a construction method thereof. Background technique [0002] As we all know, cable-stayed bridges are long-span structures, and different layout methods can be adopted for different geological and topographical conditions. Generally, the single tower cable-stayed structure is mostly arranged in a symmetrical line, and the load force transmitted by the bridge deck can be balanced through the tower shape. The mid-tower structure uses symmetrical load-bearing interaction to reduce the load effect, which can reduce the structural load-bearing system, reduce the amount of structural engineering, and effectively save investment; the side-tower structure needs to bear the load transmitted by the bridge deck through the tower itself. Because the cable-stayed bridge does not block water, and the structure is light and handy, and the space is beautiful, the cable-sta...

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Problems solved by technology

Although the cable-stayed bridge has the above-mentioned many advantages, there are still the following problems: because the cable-stayed bridge is a multi-time statically indeterminate structure, the design calculation is relatively complicated, the cable-stayed cable is expensive to manufacture, and the installation and debugging require a high level of equipment, so it is difficult The durability and anti-corrosion requirements of large and cable-stayed cables are high, and the anti-corrosion of cable-stayed bridges is directly related to the safety and life of the cable-stayed bridge project. Measures need to be taken to improve its wind resistance stability and avoid resonance damage caused by wind

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