CN201056668Y - Hidden floating type overhanging cable bridge - Google Patents

Abstract

A submerged floating inverted suspension bridge is composed of a main girder, a bridge pier, a foundation and an inverted suspension cable system. The pier and the inverted cable system are set on the platform; the main girder is placed on the inverted cable system. It has the advantages of not being affected by severe weather such as typhoons, ensuring the stability and reliability of the bridge, simple structure, can be used in deep water, and can be built into a long-span bridge. The main tower can be very low, and does not affect navigation and the environment. It can be widely used in the construction of cross-sea passages.

Description

Submersible floating inverted suspension bridge

Technical field

The utility model relates to a suspension bridge, in particular to a cross-sea submersible floating inverted suspension bridge.

Background technique

At present, conventional bridges and tunnels are used for cross-sea passages. The span of the bridge cannot be built too large, and severe weather such as typhoon and dense fog will affect the driving; the cost of the tunnel is high, especially when the seabed is very deep, and the geological requirements are high. As the width and depth of the strait increase, the use of conventional tunnels and bridges encounters increasing difficulties.

There is also a promising bridge that has not yet been applied in the cross-sea passage, such as the floating-type sightseeing Archimedes Bridge (patent application number 200410034159.1). It relies on huge buoyancy to suspend in the water and is fixed by anchors. Archimedean bridges have become an attractive technological alternative to traditional transportation technologies such as bridges, sunken tunnels, and underground tunnels. It has economic and environmental advantages, low construction cost, less pollution, and little impact on the surrounding landscape. However, the Archimedes bridge is difficult to withstand the disturbance of the load, and it is not easy to anchor in deep water, so it is mainly suitable for shallow water environments.

Contents of the invention

In order to overcome the deficiencies of conventional bridges, tunnels and Archimedes bridges, the utility model provides a submerged floating inverted suspension bridge, which is underwater, which can ensure that traffic is not affected by bad weather such as typhoons. It is stable and reliable, and has a simple structure. It can be used in deep water and to build long-span bridges.

The technical scheme adopted by the utility model to solve the technical problem is: the foundation is composed of ordinary concrete pile foundation and cap, and bridge pier and inverted suspension cable system are arranged on the cap. The main cable of the inverted suspension cable system is made of high-strength steel wire, anchored on two concrete anchorages located on the bank, and passes through the reserved hole in the pier in the middle. The size and number of spans of the main cable are determined according to the needs. Lay tie rods made of high-strength steel wires. The size, spacing and number of spans of the tie rods are determined according to the needs, and the tie rods are connected to the main beam. The main girder is a watertight cabin located underwater, which is placed on the tie rods and piers to form an inverted suspension cable structure. The driving lane is located inside the watertight cabin near the bottom plate. The self-weight of the watertight cabin is slightly less than the buoyancy, and the watertight cabin is pulled underwater by the pull rod on the inverted suspension cable. In order to balance the vehicle and the dead load of the second phase, the watertight cabin is provided with an upward pre-camber when the bridge is completed, and the tie rods and main cables are in a pre-tensioned state.

The beneficial effects of the utility model are: not affected by bad weather such as typhoons, the bridge is stable and reliable, the structure is simple, it can be used in deep water, it can be built into a long-span bridge, the main tower can be very low, and does not affect navigation and the environment.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the bridge facade of the present utility model;

Figure 2 is a schematic diagram of the cross-sectional structure of the bridge of the present invention.

In the figure: 1. Seabed, 2. Pile foundation, 3. Cap, 4. Anchorage, 5. Main cable, 6. Tie rod, 7. Main girder, 8. Pier, 9. Water surface, 10. Roadway.

Detailed ways

The pile foundation 2 is driven into the seabed 1, the cap 3 and the anchorage 4 are consolidated on the pile foundation 2, the bridge pier 8 is consolidated on the cap 3, the two ends of the main cable 5 are consolidated on the anchorage 4, and pass through the pier 8. The lower end of the tie rod 6 is hinged to the main cable 5, and the upper end is hinged to the main girder 7, and a pre-tension force is applied to make the main girder 7 sink from the water surface 9 to the design elevation. At this time, the main girder 7 maintains a certain upward pre-camber . The driveway 10 is located inside the main girder 7 near the floor.

Claims (4)

1. A submerged floating inverted suspension bridge, comprising a girder (7), the girder (7) is a watertight cabin positioned underwater, and the driveway (10) is positioned at the bottom of the watertight cabin, and is characterized in that: it also includes a foundation and an inverted cable system; the foundation is composed of a common concrete pile foundation (2) and a cap (3), and a pier (8) and an inverted cable system are set on the cap (3); the main girder (7) is placed on the inverted cable system superior. 2. The submerged floating inverted suspension bridge according to claim 1, characterized in that: said inverted suspension cable system is made up of main cable (5), anchorage (4), pull rod (6); main cable (5) uses Made of high-strength steel wire, anchored on two concrete anchorages (4) located on the bank, passing through the reserved hole in the bridge pier (8) in the middle; tie rods (6) made of high-strength steel wire are arranged on the main cable ), the tie rod (6) connects the main girder (7) to form an inverted suspension cable structure. 3. The submerged-floating inverted suspension bridge according to claim 1 or 2, characterized in that: the main girder (7) has a self-weight slightly less than the buoyancy force and is provided with an upward pre-camber. 4. The submersible floating inverted suspension bridge according to claim 3, characterized in that: both the tie rods (6) and the main cables (5) are in a pre-tensioned state.

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