A bridge-tunnel transition structure between a suspension tunnel and a deep-water suspension bridge

Abstract

The invention discloses a bridge-tunnel transition conversion structure between a suspension tunnel and a deep-water suspension bridge, which is arranged on a bridge-tunnel conversion artificial island, and the bridge-tunnel conversion artificial island is divided into an inner part and an outer part; the inner part is provided with a bridge Tunnel transition structure, side-span transition piers, suspension bridge anchor structure and suspension tunnel shore structure; bridge-tunnel transition structure includes approach bridge, island ramp bridge, island surface road and island slope tunnel; The side-span transition pier to the outer span of the anchorage structure of the suspension bridge; the island ramp bridge adopts a separate line, and transitions from the approach bridge to the island ground road in a spiral downward manner, and transitions from the island ground road to the approach bridge in a spiral upward manner; The ground road on the island is provided with longitudinal slopes; the slope tunnels on the island are arranged in a straight line, and the open section, the grating section, and the buried section are arranged in sequence; the cross-sectional structure of the island part includes the lower island base and the upper upright island body. The bridge-tunnel conversion artificial island structure of the present invention solves the problem of smooth transition between the bridge deck and the tunnel road surface with a relatively short length.

Description

technical field [0001] The invention relates to a bridge-tunnel transition conversion structure between a suspension tunnel and a deep-water suspension bridge. Background technique [0002] In the field of strait channel construction, sea-crossing bridges and subsea tunnels have been widely used, and the construction technology is mature. Sea-crossing bridges need pier support above sea level, which is suitable for near-shore and shallow seas; submarine tunnels can adapt to deeper seas, but the project cost is high, and construction and operation risks are high. In addition, the immersed tube tunnel has a huge structure, which requires the riverbed or seabed to be gentle and free of large fluctuations. It is only suitable for short-distance shallow waters, not for long-distance and deep waters; floating tunnels are promising cross-sea transportation by the theoretical community The new model has no practical application at present. It is estimated that the construction cost...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to fill up the gaps in the prior art and provide a bridge-tunnel transition structure between a suspension tunnel and a deep-water suspension bridge, which solves the problem of a gentle transition between the bridge deck and the tunnel road surface with a shorter length, so that The length of the bridge-tunnel conversion artificial island along the axis of the tunnel can be shortened to reduce the impact of water blocking on the sea potential of the water area

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