CN111252196B - Anti-collision warning system of underwater cable-stayed suspension tunnel - Google Patents

Anti-collision warning system of underwater cable-stayed suspension tunnel Download PDF

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Publication number
CN111252196B
CN111252196B CN202010065307.5A CN202010065307A CN111252196B CN 111252196 B CN111252196 B CN 111252196B CN 202010065307 A CN202010065307 A CN 202010065307A CN 111252196 B CN111252196 B CN 111252196B
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China
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cable
underwater
warning
tunnel
cables
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CN111252196A (en
Inventor
孙洪春
徐立新
刘卫星
孙旭
傅一帆
刘磊
张继彪
汪峥
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CCCC Third Harbor Engineering Co Ltd
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CCCC Third Harbor Engineering Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00Buoys
    • B63B22/16Buoys specially adapted for marking a navigational route
    • B63B22/166Buoys specially adapted for marking a navigational route comprising a light
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B22/00Buoys
    • B63B22/04Fixations or other anchoring arrangements
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/063Tunnels submerged into, or built in, open water
    • E02D29/067Floating tunnels; Submerged bridge-like tunnels, i.e. tunnels supported by piers or the like above the water-bed

Abstract

The invention discloses an anti-collision warning system of an underwater inclined suspension tunnel, which comprises a warning buoy device and an underwater warning anchor cable device. The warning buoy device comprises a plurality of buoys, a plurality of fixed cables and a plurality of warning lamps; the buoys are arranged on the water surface above the underwater suspension tunnel at intervals along the axial direction of the underwater suspension tunnel; the plurality of fixing cables are fixed between the plurality of buoys and the underwater floating tunnel in a one-to-one correspondence manner; a plurality of warning lights are attached to the tops of the plurality of buoys in a one-to-one correspondence. The underwater warning anchor cable device comprises two underwater warning cables, a plurality of hanging cables and a plurality of warning lamp belts; two underwater warning cables are arranged on two sides of the underwater suspension tunnel in parallel, and a plurality of hanging ropes are hung on the two underwater warning cables at intervals; the warning lamp belts are arranged on the hanging ropes in a one-to-one correspondence mode. The anti-collision warning system can warn navigation objects on the water surface and underwater vehicles, and can effectively reduce the risk of collision of the suspended tunnel.

Description

Anti-collision warning system of underwater cable-stayed suspension tunnel
Technical Field
The invention relates to an underwater suspension tunnel, in particular to an anti-collision warning system of an underwater cable-stayed suspension tunnel.
Background
The underwater suspension Tunnel is called a 'focused Floating Tunnel' in English, and is called 'SFT' for short. Also called Archimedes bridge in Italy, abbreviated as PDA bridge. Generally, the system consists of a tubular body floating in water to a certain depth (the tubular body has a large space enough to meet the requirements of road and railway traffic), a support system (anchor cables anchored on a seabed foundation, piers or a water buoyancy tank) and structures on both sides. The deep water type water-saving transport vehicle is a novel structure for the transport vehicle to cross between two banks separated by deep water, is suitable for all the transport vehicles needing to pass through the water, can pass trains, automobiles, small motor vehicles and pedestrians, and can be made into service channels for passing through various pipelines and cables. The differences between the underwater suspension tunnel and the traditional buried tunnel or tunneling tunnel are as follows: the suspended tunnel structure is surrounded by water and is neither located on nor traversing the ground, but is held in a fixed position primarily by the weight of its own structure, the buoyancy experienced by the structure, and the anchoring forces of the support system. The floating tunnel is sealed around, and the structure has all the characteristics of a common tunnel and is considered to be a tunnel rather than a bridge from the use point of view.
Although the suspension tunnel has certain advantages compared with the scheme of cross-sea passages such as immersed tube tunnels, deep-buried tunnels, bridges and the like, the design and construction of the suspension tunnel are still a worldwide problem, and no established suspension tunnel exists so far. Currently, seven countries (norway, italy, japan, china, swiss, brazil, usa) are mainly studied in the world, and many technical problems found by research are mainly: overall structural arrangement, tunnel materials, anchoring system structural style, tunnel connection style, shore connection structural design, tunnel structure feasibility, construction and operation risks, and the like. Whether the problems can be solved or not determines whether the suspension tunnel can be moved to actual engineering from a feasible scheme or not. With the growing concern of the suspension tunnel, research on design and construction technology thereof has gradually become a focus of interest in the industry, and some research results are obtained preliminarily.
The construction water area where the suspension tunnel is located often needs to have a navigation function, and the normal passing requirements of sailing objects such as water surface ships and underwater submerging devices need to be met. Since the tunnel is suspended below the water surface, the tunnel is almost impossible to be found and recognized by human eyes, and if the position of the tunnel cannot be identified when the navigation object passes through the tunnel, the collision accident is easy to occur, which cannot be allowed by the tunnel or the navigation object. Therefore, it is particularly important to set collision avoidance warning signs on the suspension tunnel.
Disclosure of Invention
The invention aims to fill the blank of the prior art and provide an anti-collision warning system for an underwater inclined suspension tunnel, which can warn navigation objects on the water surface and underwater submerging devices, cover all underwater navigation objects and effectively reduce the risk of collision of the suspension tunnel.
The purpose of the invention is realized as follows: an anti-collision warning system of an underwater cable-stayed suspension tunnel is suitable for the underwater cable-stayed suspension tunnel and comprises a tunnel body, a butt-joint shore structure and a cable anchorage system; the tunnel body comprises an underwater suspension tunnel and a land slope tunnel; the underwater suspension tunnel is formed by connecting a plurality of sections of prefabricated pipe joints; the shore connecting structure is connected between the underwater suspension tunnel and the land slope tunnel; the cable anchorage system comprises four cable anchorage piers, four groups of cable steering piers, a cable ramp and a plurality of stay cables; the four guy cable anchorage piers are respectively arranged on the shore side seashore at two sides of the tunnel and the opposite shore side seashore at two sides of the tunnel; the four groups of guy cable steering piers are respectively arranged on the coast side bank slopes on the two sides of the tunnel and are close to the four guy cable anchor piers in a one-to-one correspondence manner; half of the plurality of stay cables are the inclined stay cables on the bank side, and the other half of the plurality of stay cables are the inclined stay cables on the opposite bank side; the stay cable ramp is arranged on the bank slope between each group of stay cable steering piers and the corresponding stay cable anchorage pier; each stay cable comprises two stay cables which are respectively connected with the two sides of the underwater suspension tunnel; one end of the bank side inclined guy cable is anchored on guy cable anchors on the outer surfaces of two sides of the underwater suspended tunnel with half length close to the bank at intervals, and the other end of the bank side inclined guy cable penetrates through the two groups of guy cable steering piers arranged on the bank respectively and then extends to the ground along a guy cable ramp and is anchored on two guy cable anchor piers arranged on the bank; one end of each opposite bank side inclined guy cable is anchored on guy cable anchors on the outer surfaces of two sides of the water suspension tunnel close to the opposite bank at intervals, and the other end of each opposite bank side inclined guy cable penetrates through two groups of guy cable steering piers arranged on the opposite bank and then extends to the ground along a guy cable ramp and is anchored on two guy cable anchor piers arranged on the opposite bank;
the anti-collision warning system comprises a warning buoy device and an underwater warning anchor cable device; wherein the content of the first and second substances,
the warning buoy device comprises a plurality of buoys, a plurality of fixed cables and a plurality of warning lamps; the buoys are arranged on the water surface above the underwater suspension tunnel at intervals along the axial direction of the underwater suspension tunnel; the plurality of fixing cables are fixed between the plurality of buoys and the underwater floating tunnel in a one-to-one correspondence manner; the warning lamps are attached to the tops of the buoys in a one-to-one correspondence manner;
the underwater warning anchor cable device comprises two underwater warning cables, a plurality of hanging cables and a plurality of warning lamp belts; two underwater warning cables are arranged on two sides of the underwater suspension tunnel in parallel, opposite shore ends of the two underwater warning cables respectively penetrate through two groups of guy cable steering piers arranged on the opposite shore and then extend to the ground along guy cable ramps and are anchored on two guy cable anchor piers arranged on the opposite shore, opposite shore ends of the two underwater warning cables respectively penetrate through two groups of guy cable steering piers arranged on the opposite shore and then extend to the ground along guy cable ramps and are anchored on the two guy cable anchor piers arranged on the opposite shore; a plurality of hanging ropes are hung on the two underwater warning cables at intervals; the warning lamp belts are arranged on the hanging ropes in a one-to-one correspondence mode.
In the anti-collision warning system for the underwater cable-stayed suspension tunnel, the buoy is of a cylindrical steel buoyancy tank structure, and the center of gravity of the buoy is lower than the center of buoyancy; the bottom of each buoy is provided with an upper cable limiter and a lower cable limiter, so that the fixed cable is movably connected between the upper cable limiter and the lower cable limiter; the cable upper stopper is arranged at the top elevation position of the buoy at the extremely high tide level; the cable lower stopper is arranged at the bottom elevation position of the buoy at the extreme low tide level.
The anti-collision warning system for the underwater cable-stayed suspension tunnel is characterized in that the fixed cable is an ultra-high molecular weight polyethylene fiber cable, the underwater floating weight ratio is 1, and the fixed cable is hinged to the underwater suspension tunnel.
According to the anti-collision warning system for the underwater cable-stayed suspension tunnel, the distance between each two underwater warning cables and the axis of the underwater suspension tunnel is 100-150 m.
The anti-collision warning system for the underwater cable-stayed suspension tunnel is characterized in that the underwater warning cable is an ultra-high molecular weight polyethylene fiber cable, and the floating weight ratio of the underwater warning cable to the underwater suspension tunnel is 0.75-0.85.
The anti-collision warning system for the underwater cable-stayed suspension tunnel is characterized in that the suspension cable is an ultra-high molecular weight polyethylene fiber cable, and the ratio of the water weight to the water weight is 0.75-0.85.
The anti-collision warning system of the underwater cable-stayed suspension tunnel has the following characteristics:
1) the anti-collision warning system is suitable for various underwater suspension tunnel structures, in particular to a cable-stayed suspension tunnel structure; for other types of suspended tunnels, the shore-based anchorage device of the underwater warning cable needs to be independently arranged;
2) the anti-collision warning system is simple in principle, mature in technology and convenient to construct;
3) the anti-collision warning system can warn navigation objects on the water surface and underwater vehicles, covers all underwater navigation objects and can effectively reduce the risk of collision of the suspended tunnel;
4) the anti-collision warning system structure fully utilizes the tunnel pipe joint and the guy cable anchorage system of the cable-stayed suspension tunnel, and other anchorage structures are not additionally arranged, so that the cost is greatly saved.
Drawings
FIG. 1 is a plan view of an anti-collision warning system of an underwater cable-stayed suspension tunnel according to the present invention;
FIG. 2 is a longitudinal sectional view of the anti-collision warning system of the underwater cable-stayed suspension tunnel;
fig. 3 is a cross-sectional view of the anti-collision warning system of the underwater cable-stayed suspension tunnel.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 3, the anti-collision warning system for an underwater cable-stayed suspension tunnel according to the present invention is applicable to an underwater cable-stayed suspension tunnel, and includes a tunnel body, a butt-joint shore structure 2 and a cable anchorage system; the tunnel body comprises an underwater suspension tunnel 1 and a land slope tunnel 6; the underwater suspension tunnel 1 is formed by connecting a plurality of sections of prefabricated pipe joints; the shore connection structure 2 is connected between the underwater suspension tunnel 1 and the land slope tunnel 6; the cable anchorage system comprises four cable anchorage piers 4, four groups of cable steering piers 5, a cable ramp and a plurality of stay cables 3; the four guy cable anchorage piers 4 are respectively arranged on the shore side seashore at two sides of the tunnel and the opposite shore side seashore at two sides of the tunnel; the four groups of cable steering piers 5 are respectively arranged on the bank side coast bank slopes on the two sides of the tunnel and the opposite bank side coast bank slopes on the two sides of the tunnel and are close to the four cable anchor piers 4 in a one-to-one correspondence manner; half of the plurality of stay cables 3 are the inclined cables on the opposite side of the bank, and the other half of the plurality of stay cables are the inclined cables on the opposite side of the bank; the stay cable ramp is arranged on the bank slope between each group of stay cable steering piers 5 and the corresponding stay cable anchorage pier 4; each stay cable 3 comprises two stay cables which are respectively connected with two sides of the underwater suspension tunnel 1; one ends of the shore side inclined guys are anchored on guy anchors on the outer surfaces of two sides of the underwater suspended tunnel 1 which is close to half of the length of the shore at intervals, the other ends of the shore side inclined guys respectively penetrate through two groups of guy steering piers 5 arranged on the shore and then extend to the ground along guy ramps, and the other ends of the shore side inclined guys are anchored on two guy anchor piers 4 arranged on the shore; one end of each opposite bank side inclined guy cable is anchored on guy cable anchors on the outer surfaces of two sides of the water suspension tunnel 1 close to the opposite bank at intervals, and the other end of each opposite bank side inclined guy cable penetrates through two groups of guy cable steering piers 5 arranged on the opposite bank and then extends to the ground along a guy cable ramp and is anchored on two guy cable anchor piers 4 arranged on the opposite bank.
The anti-collision warning system comprises a warning buoy device and an underwater warning anchor cable device; wherein the content of the first and second substances,
the warning buoy device comprises a plurality of buoys 71, a plurality of fixing cables 72 and a plurality of warning lamps 73; a plurality of buoys 71 are arranged on the water surface above the underwater floating tunnel 1 at intervals along the axial direction of the underwater floating tunnel 1; a plurality of fixing cables 72 are fixed between the plurality of buoys 71 and the underwater floating tunnel 1 in a one-to-one correspondence; a plurality of warning lamps 73 are attached to the tops of the plurality of buoys 71 in one-to-one correspondence.
The buoy 71 adopts a cylindrical steel buoyancy tank structure, adopts a mode of combining coating corrosion prevention and cathode protection corrosion prevention for corrosion prevention, and the gravity center of the buoy is lower than that of a buoyancy core; because the buoys 71 are affected by the fluctuation of the damp level, the height can be changed continuously, and in order to avoid generating tension on the underwater floating tunnel 1, an upper cable stopper and a lower cable stopper are arranged at the bottom of each buoy 71, so that the fixed cables 72 are movably connected between the upper cable stoppers and the lower cable stoppers; the cable upper stopper is arranged at the top elevation position of the buoy 71 at the extreme high tide level; the cable lower stop is located at the bottom elevation of the buoy 71 at the extreme low tide level. The fixing cable 72 needs to be light, wear-resistant and corrosion-resistant, so that an ultra-high molecular weight polyethylene fiber cable is adopted, the floating weight ratio in water is 1, and the fixing cable 72 is connected with the underwater suspension tunnel 1 in a hinged mode.
The warning buoy device is used for reminding a ship on the water surface that a tunnel is arranged underwater and slowing down to avoid generating overlarge ship-shaped waves to cause the large swing of the underwater suspended tunnel 1. The fixing cable 72 of the buoy 71 is arranged near the joint of the tunnel pipe joint, and the distance of the buoy 71 is set while considering the width of the water surface channel.
The underwater warning anchor cable device comprises two underwater warning cables 81, a plurality of hanging cables 82 and a plurality of warning lamp belts; two underwater warning cables 81 are arranged on two sides of the underwater suspended tunnel 1 in parallel; in order to save cost, a guy cable anchorage system is used as a shore-based anchorage device of the underwater warning cable 81, so that the shore ends of the two underwater warning cables 81 respectively penetrate through two groups of guy cable steering piers 5 arranged on the shore and then extend to the ground along guy cable ramps, and are anchored on two guy cable anchorage piers 4 arranged on the shore, the opposite shore ends of the two underwater warning cables 81 respectively penetrate through two groups of guy cable steering piers 5 arranged on the opposite shore and then extend to the ground along guy cable ramps, and are anchored on the two guy cable anchorage piers 4 arranged on the opposite shore; a plurality of hanging ropes 82 are hung on the two underwater warning cables 81 at intervals; the plurality of warning light strips are attached to the plurality of lanyards 82 in a one-to-one correspondence.
In order to be close to the underwater suspended tunnel 1 as much as possible, the distance between the two underwater warning cables 81 and the axis of the underwater suspended tunnel 1 is 100-150 m. The underwater warning cable 81 is slightly higher than the underwater suspended tunnel 1, and the lowest point elevation of the underwater warning cable 81 which bends downwards is ensured to be the top elevation of the underwater suspended tunnel 1, so that the bottom elevation of the warning lamp strip is the bottom elevation of the underwater suspended tunnel 1.
The underwater warning cable 81 is a key structure, and due to the adoption of catenary arrangement, the underwater warning cable 81 has enough tensile strength in view of structural stress; in consideration of durability, the underwater warning cable 81 needs to be wear-resistant and corrosion-resistant; in consideration of construction convenience, the underwater warning cable 81 is light, so that the underwater warning cable is an ultra-high molecular weight polyethylene fiber cable, and the floating weight ratio in water is 0.75-0.85.
The hanging rope 82 needs to be light, wear-resistant and corrosion-resistant, so that an ultra-high molecular weight polyethylene fiber cable is adopted, and the floating weight ratio in water is 0.75-0.85.
The underwater warning cable 81 and the warning lamp strip are arranged to remind that a tunnel is arranged in front of the underwater vehicle, and the underwater vehicle needs to dive or float to sail so as to avoid collision with the underwater suspended tunnel 1. Therefore, a certain distance needs to be kept from the underwater floating tunnel 1, and sufficient adjustment time is reserved for the underwater vehicle.
The anti-collision warning system is synchronously installed with the underwater suspended tunnel to ensure the safety of the tunnel in the construction period, and comprises the following specific implementation steps:
the method comprises the following steps: constructing a shore connection structure and constructing a stayed cable anchorage system by a cofferdam method, and reserving a traction rope of a fixed cable 72 of a buoy 71 at the waterside side of the shore connection structure; traction ropes of underwater warning cables 81 are reserved in guy cable steering piers 5 on two banks, rope heads at the water-facing ends of the traction ropes are all pulled to the top of a bank slope for temporary fixation, and meanwhile, buoys 71 are manufactured and processed;
step two: one end of an underwater warning cable 81 is connected with a traction rope on the top of the bank slope of the bank, one end of the underwater warning cable 81 is drawn, and the underwater warning cable is fixed on a guy cable anchor pier 4 of the bank;
step three: the other end of the underwater warning cable 81 is pulled to the opposite bank by a tug boat, and meanwhile, a hanging cable 82 and a warning lamp belt are installed on the top of the opposite bank slope;
step four: the other end of the underwater warning cable 81 is pulled to the opposite bank by a tug, then is connected with a pulling rope at the top of the opposite bank slope, and the other end of the underwater warning cable 81 is fixed on the opposite inhaul cable anchor pier 4;
step five: when the tunnel pipe joints are connected, the fixed cable 72 is connected with the traction rope in the shore connection structure 2;
step six: when the tunnel pipe joint is pushed and installed, a crane ship is adopted to transport the buoy 71 and a traction rope of the fixed cable 72 to the designed position of the buoy 71, and the buoy 71 is lowered to float automatically;
step seven: a pulling rope for fixing the cable 72 is pulled in the buoy 71, and an upper cable stopper, a lower cable stopper and a warning light 73 are installed.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.

Claims (4)

1. An anti-collision warning system of an underwater cable-stayed suspension tunnel is suitable for the underwater cable-stayed suspension tunnel and comprises a tunnel body, a butt-joint shore structure and a cable anchorage system; the tunnel body comprises an underwater suspension tunnel and a land slope tunnel; the underwater suspension tunnel is formed by connecting a plurality of sections of prefabricated pipe joints; the shore connecting structure is connected between the underwater suspension tunnel and the land slope tunnel; the cable anchorage system comprises four cable anchorage piers, four groups of cable steering piers, a cable ramp and a plurality of stay cables; the four guy cable anchorage piers are respectively arranged on the shore side seashore at two sides of the tunnel and the opposite shore side seashore at two sides of the tunnel; the four groups of guy cable steering piers are respectively arranged on the coast side bank slopes on the two sides of the tunnel and are close to the four guy cable anchor piers in a one-to-one correspondence manner; half of the plurality of stay cables are the inclined stay cables on the bank side, and the other half of the plurality of stay cables are the inclined stay cables on the opposite bank side; the stay cable ramp is arranged on the bank slope between each group of stay cable steering piers and the corresponding stay cable anchorage pier; each stay cable comprises two stay cables which are respectively connected with the two sides of the underwater suspension tunnel; one end of the bank side inclined guy cable is anchored on guy cable anchors on the outer surfaces of two sides of the underwater suspended tunnel with half length close to the bank at intervals, and the other end of the bank side inclined guy cable penetrates through the two groups of guy cable steering piers arranged on the bank respectively and then extends to the ground along a guy cable ramp and is anchored on two guy cable anchor piers arranged on the bank; one end of each opposite bank side inclined guy cable is anchored on guy cable anchors on the outer surfaces of two sides of the water suspension tunnel close to the opposite bank at intervals, and the other end of each opposite bank side inclined guy cable penetrates through two groups of guy cable steering piers arranged on the opposite bank and then extends to the ground along a guy cable ramp and is anchored on two guy cable anchor piers arranged on the opposite bank; it is characterized in that the preparation method is characterized in that,
the anti-collision warning system comprises a warning buoy device and an underwater warning anchor cable device;
the warning buoy device comprises a plurality of buoys, a plurality of fixed cables and a plurality of warning lamps; the buoys are arranged on the water surface above the underwater suspension tunnel at intervals along the axial direction of the underwater suspension tunnel; the plurality of fixing cables are fixed between the plurality of buoys and the underwater floating tunnel in a one-to-one correspondence manner; the warning lamps are attached to the tops of the buoys in a one-to-one correspondence manner;
the buoy adopts a cylindrical steel buoyancy tank structure, and the gravity center of the buoy is lower than the buoyancy center; the bottom of each buoy is provided with an upper cable limiter and a lower cable limiter, so that the fixed cable is movably connected between the upper cable limiter and the lower cable limiter; the cable upper stopper is arranged at the top elevation position of the buoy at the extremely high tide level; the cable lower limiting stopper is arranged at the bottom elevation position of the buoy at the extremely low tide level;
the fixed cable is an ultra-high molecular weight polyethylene fiber cable, the floating weight ratio in water is 1, and the fixed cable is hinged with the underwater suspension tunnel;
the underwater warning anchor cable device comprises two underwater warning cables, a plurality of hanging cables and a plurality of warning lamp belts; two underwater warning cables are arranged on two sides of the underwater suspension tunnel in parallel, opposite shore ends of the two underwater warning cables respectively penetrate through two groups of guy cable steering piers arranged on the opposite shore and then extend to the ground along guy cable ramps and are anchored on two guy cable anchor piers arranged on the opposite shore, opposite shore ends of the two underwater warning cables respectively penetrate through two groups of guy cable steering piers arranged on the opposite shore and then extend to the ground along guy cable ramps and are anchored on the two guy cable anchor piers arranged on the opposite shore; a plurality of hanging ropes are hung on the two underwater warning cables at intervals; the warning lamp belts are arranged on the hanging ropes in a one-to-one correspondence mode.
2. The anti-collision warning system for the underwater cable-stayed suspension tunnel according to claim 1, wherein the distance between each two underwater warning cables and the axis of the underwater suspension tunnel is 100-150 m.
3. The anti-collision warning system for the underwater cable-stayed suspension tunnel according to claim 1 or 2, wherein the underwater warning cable is an ultra-high molecular weight polyethylene fiber cable, and the ratio of the water weight to the water weight is 0.75-0.85.
4. The anti-collision warning system for the underwater cable-stayed suspension tunnel according to claim 1, wherein the suspension cable is an ultra-high molecular weight polyethylene fiber cable, and the ratio of the water floating weight to the underwater floating weight is 0.75-0.85.
CN202010065307.5A 2020-01-20 2020-01-20 Anti-collision warning system of underwater cable-stayed suspension tunnel Active CN111252196B (en)

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