CN115892359A - Concrete tunnel immersed tube pipe section transportation method - Google Patents

Abstract

The invention belongs to the technical field of water traffic transportation, and discloses a concrete tunnel immersed tube section transportation method, which comprises the following steps: s1, moving a semi-submersible ship to a transfer position on the water surface; s2, dragging the immersed tube pipe joint at the position to be dragged to the position to be loaded on the water surface by the tugboat; s3, the semi-submersible ship pulls the immersed tube pipe joint from the position to be loaded to a transfer position, so that the immersed tube pipe joint is positioned on a deck of the semi-submersible ship; s4, flexibly connecting the immersed tube pipe joint with the semi-submersible ship; and S5, moving the semi-submersible ship loaded with the immersed tube pipe joint from the transfer position to a target position on the water surface. The immersed tube pipe joints are flexibly connected with the semi-submersible ship, so that the influence of sagging or arching of the semi-submersible ship caused by waves on the immersed tube pipe joints can be reduced in the transportation process; the immersed tube pipe joint and the semi-submersible ship are connected into a whole to form a composite beam structure, so that the structural strength is improved, the deformation of the semi-submersible ship is reduced, the influence of sagging or arching in the semi-submersible ship on the immersed tube pipe joint is further reduced, and the structure of the immersed tube pipe joint is prevented from being damaged.

Description

Concrete tunnel immersed tube pipe section transportation method

Technical Field

The invention relates to the technical field of water traffic transportation, in particular to a method for transporting immersed tube pipe sections of a concrete tunnel.

Background

With the development of bridge and tunnel construction technology of domestic enterprises, numerous domestic enterprises have started accepting foreign bridge and tunnel engineering projects, in the accepted immersed tube tunnel engineering, as large concrete tunnel immersed tube joints are easily damaged during ocean transportation, the method of ocean transportation from domestic prefabricated large concrete tunnel immersed tube joints to foreign countries is greatly restricted, and the large concrete tunnel immersed tube joints can only be prefabricated at foreign construction sites, so that the cost is increased, the engineering progress is slowed down, and the market competitiveness of domestic enterprises is greatly weakened.

When the immersed tube pipe section of the large-scale concrete tunnel is transported in the ocean, if the immersed tube pipe section is directly placed on the deck of a deck transport ship, a barge, a semi-submerged barge and a semi-submerged ship or placed on a skid and a buttress according to the existing transportation method of ocean cargos, when the immersed tube pipe section is in adverse sea conditions, particularly when the immersed tube pipe section is sailed in a high-wave area, the immersed tube pipe section and the ship are not deformed uniformly under the action of external force because the rigidity difference between a steel ship body and the concrete immersed tube pipe section is great. Especially, the deformation of the ship caused by the sagging or middle arch of the ship greatly exceeds the deformation of the immersed tube when the ship sails in a wave zone, the deformation of the immersed tube and the deformation of the immersed tube are separated, so that the immersed tube section is partially suspended, and the immersed tube section structure is easily damaged by too large bending moment, so that the whole transportation activity fails.

Disclosure of Invention

The invention aims to provide a method for transporting immersed tube pipe joints of a concrete tunnel, which aims to solve the technical problem that the immersed tube pipe joint structure is easy to damage when the immersed tube pipe joints are transported in the ocean.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for transporting immersed tube joints of a concrete tunnel comprises the following steps:

s1, moving a semi-submersible ship to a transfer position on the water surface;

s2, dragging the immersed tube pipe joint at the position to be dragged to the position to be loaded on the water surface by the tugboat;

s3, pulling the immersed tube pipe joint from the position to be loaded to a transfer position by the semi-submersible ship, so that the immersed tube pipe joint is positioned on a deck of the semi-submersible ship;

s4, flexibly connecting the immersed tube pipe joint with the semi-submersible ship;

and S5, moving the semi-submersible ship loaded with the immersed tube pipe joint from the transfer position to a target position on the water surface.

Preferably, the step S2 includes, before:

s21, discharging water in the dock to enable the immersed tube pipe joint to float;

s22, connecting a first stranded cable device on land with a immersed tube pipe joint;

s23, the immersed tube pipe joint is pulled out to a position to be dragged from the dock by the first stranded cable device;

and S24, connecting the tugboat with the immersed tube pipe joint at the position to be towed through a cable.

Preferably, the step S4 includes:

and (3) corresponding the elastic support on the deck of the semi-submersible ship to the anchoring parts at the bottoms of the immersed tube pipe joints one by one, so that the elastic support is fixedly connected with the anchoring parts.

Preferably, the step S3 includes:

s31, submerging the semi-submerged ship until the deck is positioned below the bottom surface of the immersed tube pipe joint;

s32, connecting a second stranded cable device on the semi-submersible ship with the immersed tube pipe joint through a cabled ship;

s33, separating the tugboat from the immersed tube pipe joint;

s34, the semi-submersible ship pulls the immersed tube pipe joint from the position to be loaded to a transfer position through a second stranded cable device;

and S35, floating the semi-submersible ship to the state that the immersed tube pipe joint is abutted to the elastic support on the deck of the semi-submersible ship.

Preferably, the step S35 includes:

step S351, calculating the three-dimensional dynamic positions of the immersed tube joints and the semi-submersible ship in real time through a measurement and control system in the floating process of the semi-submersible ship;

step S352, adjusting the position of the semi-submersible ship through a ship dynamic positioning system;

and S353, adjusting the position of the immersed tube pipe joint through a second stranded cable device to enable the elastic support to be aligned to the anchoring piece.

Preferably, after the step S35, the method further includes:

s36, floating the semi-submersible ship to a set draft to support the immersed tube joint to leave the water surface;

and S37, when the immersed tube pipe joint is completely lifted out of the water surface by the semi-submersible ship, regulating the distribution of ballast water in the cabin through a ballast allocation system.

Preferably, after the elastic support and the anchor are fixedly connected, the method further comprises the following steps:

a shock absorber is installed between the anchor and the deck of the semi-submersible vessel.

Preferably, the step S5 includes:

and S51, the semi-submersible ship avoids a high wave zone exceeding the designed working condition to reach a target position in a bypassing or waiting navigation mode.

Preferably, after the step S5, the method further comprises:

and S6, separating the immersed tube pipe joint from the semi-submersible ship.

Preferably, the step S6 includes:

s61, disconnecting the flexible connection between the semi-submersible ship and the immersed tube pipe joint;

s62, sinking the semi-submersible ship to a preset draft to enable the immersed tube pipe joint to float on the water surface and be separated from the semi-submersible ship;

and S63, towing the immersed tube pipe joint away from the semi-submersible ship by the tugboat.

Has the advantages that: the invention provides a large-scale concrete tunnel immersed tube pipe section transportation method, a semi-submersible ship moves to a transfer position on the water surface to be parked and waited, an immersed tube pipe section is dragged to a transfer loading position from a position to be dragged by a tugboat, the immersed tube pipe section is pulled to the transfer position from the position to be loaded by the semi-submersible ship, and the immersed tube pipe section is positioned on a deck of the semi-submersible ship and flexibly connected with the semi-submersible ship, so that the influence of the sag or middle arch of the semi-submersible ship on the immersed tube pipe section can be reduced in the transportation process.

Drawings

Fig. 1 is a flow chart of a concrete tunnel immersed tube segment transportation method provided by an embodiment of the invention;

FIG. 2 is a perspective view of a semi-submersible vessel coupled to a sinking pipe joint according to an embodiment of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

fig. 4 is a bottom view of a sinking pipe section according to an embodiment of the present invention;

FIG. 5 is a schematic view of a first cable stranding apparatus towing a immersed tube segment according to an embodiment of the present invention;

FIG. 6 is a schematic view of a tugboat towed immersed tube coupling provided by an embodiment of the invention;

fig. 7 is a first schematic diagram of a second mooring device towing a sinking pipe joint according to an embodiment of the present invention;

fig. 8 is a second schematic diagram of a second mooring device towing a sinking pipe joint according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of the semi-submersible vessel floating up to the elastic support and abutting against the immersed tube coupling according to the embodiment of the invention;

fig. 10 is a schematic view of a semi-submersible vessel supporting a sinking pipe joint out of the water surface according to an embodiment of the present invention.

In the figure:

100. a water surface; 200. a dock; 300. land; 301. a first cable stranding device;

1. a semi-submersible vessel; 11. steel abutments; 12. positioning a pile; 13. an elastic support; 14. a shock absorber; 15. a ballast deployment system; 16. a marine dynamic positioning system; 17. a second stranding device;

2. sinking pipe joints; 21. anchoring the member;

3. a tug boat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly specified and limited, "above" or "below" a transport feature a feature to be loaded may include direct contact of the features to be loaded and transported, and may also include contact of the features to be loaded and transported not directly but through additional features therebetween. Also, features to be loaded "above", "over" and "above" a transfer feature includes features to be loaded directly above and obliquely above the transfer feature, or simply means that the feature to be loaded is level above the transfer feature. Features to be loaded "under", "below" and "beneath" a transfer feature includes features to be loaded directly under and obliquely below the transfer feature, or simply means that the feature to be loaded is level less than the transfer feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, the terms "to be loaded" and "transported" are used only for descriptive distinction and have no special meaning.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

When concrete tunnel immersed tube pipe section ocean transportation, if according to the existing ocean cargo transportation method, the immersed tube pipe section is directly placed on the deck of deck transport ship, barge, semi-submerged barge and semi-submerged ship 1, or placed on skid and buttress, when adverse sea conditions are encountered, especially when navigating in high wave area, because the rigidity difference between the steel hull and the concrete immersed tube pipe section is more, the deformation of the immersed tube pipe section and the ship is inconsistent due to the sagging or middle arch of the ship, the immersed tube pipe section and the ship are separated, the immersed tube pipe section is locally suspended, the structure of the immersed tube pipe section is damaged, and the whole transportation activity fails.

Referring to fig. 1 to 10, an embodiment of the present invention provides a method for transporting a concrete tunnel immersed tube segment, including:

s1, moving a semi-submersible ship 1 to a transfer position on a water surface 100;

s2, dragging the immersed tube pipe joint 2 at the position to be dragged to the position to be loaded on the water surface 100 by the tug 3;

s3, the semi-submersible vessel 1 pulls the immersed tube pipe joint 2 from the position to be loaded to a transfer position, so that the immersed tube pipe joint 2 is positioned on a deck of the semi-submersible vessel 1;

s4, flexibly connecting the immersed tube pipe joint 2 with the semi-submersible vessel 1;

s5, moving the semi-submersible ship 1 loaded with the immersed tube pipe joint 2 from a transfer position to a target position on the water surface 100;

and S6, separating the immersed tube pipe joint 2 from the semi-submersible ship 1.

Through being located the deck of semi-submerged ship 1 with immersed tube coupling 2 and with semi-submerged ship 1 flexonics, make can reduce in the transportation that semi-submerged ship 1 hangs down or well hunch to the influence of immersed tube coupling 2, simultaneously, immersed tube coupling 2 and semi-submerged ship 1 lead to after linking into an organic whole, immersed tube coupling 2 can form composite beam structure with semi-submerged ship 1, improve the structural strength of whole transportation, reduce the deformation of semi-submerged ship 1, to the influence of immersed tube coupling 2 when further reducing semi-submerged ship 1 and hanging down or well hunch, thereby reduce the fracture of immersed tube coupling 2, avoid immersed tube coupling 2 structure to suffer destruction.

Wherein the flexible connection can be an elastic element arranged between the deck of the semi-submersible vessel 1 and the immersed tube pipe joint 2. In the embodiment, an elastic support 13 is arranged between the deck of the semi-submersible vessel 1 and the immersed tube pipe section 2, and the elastic end of the elastic support 13 is connected with the immersed tube pipe section 2 so as to reduce the influence of the sagging or arching of the semi-submersible vessel 1 on the immersed tube pipe section 2 during navigation.

Before semi-submersible vessel 1 is moved to a transfer position on surface 100, it is necessary to install resilient mounts 13 on the deck of semi-submersible vessel 1. Firstly, calculating the quantity of the needed elastic supports 13 according to the weight of the immersed tube joints 2 and the conditions such as hydrological climate and the like, designing the distribution of the elastic supports 13, then arranging steel abutments 11 with corresponding quantity on a deck of the semi-submersible ship 1 according to the calculation result, fixedly connecting the steel abutments 11 with the deck, connecting the deck and the elastic supports 13 through the steel abutments 11, enhancing the connection firmness, and finally welding or connecting the elastic supports 13 with the steel abutments 11 through bolts.

The type of the elastic support 13 is not limited, and in this embodiment, a multi-layer rubber support is specifically provided, and the multi-layer rubber support can absorb a large amount of vibration and deformation, so as to reduce the influence of deformation and vibration of the hull on the immersed tube coupling 2.

When the immersed tube section 2 is in the dock 200, the anchoring pieces 21 are pre-embedded at the bottom of the immersed tube section 2 according to the calculated number of the elastic supports 13, and the number and distribution of the anchoring pieces 21 are consistent with those of the elastic supports 13, so that the elastic supports 13 and the anchoring pieces 21 can be in one-to-one correspondence.

The step S2 comprises the following steps:

step S21, discharging water in the dock 200 to enable the immersed tube pipe joint 2 to float;

step S22, connecting a first stranded cable device 301 on land 300 with the immersed tube pipe joint 2;

step S23, the first stranding device 301 pulls out the immersed tube pipe section 2 from the dock 200 to a position to be towed;

and step S24, connecting the tug boat 3 with the immersed tube pipe joint 2 at the position to be towed through a cable.

Specifically, before the tug 3 pulls the immersed tube section 2 at the position to be towed to the position to be loaded on the water surface 100, the immersed tube section 2 with the anchor 21 in the dock 200 needs to be transported to the position to be towed. Firstly, the dock 200 is drained to float the immersed tube pipe section 2, because of the size limitation of the dock 200, the tug 3 cannot directly pull the immersed tube pipe section 2 out of the dock 200, the first stranded cable device 301 on the land 300 needs to be connected with the immersed tube pipe section 2, the immersed tube pipe section 2 is pulled out of the dock 200 to the position to be towed, then the tug 3 is connected with the immersed tube pipe section 2 at the position to be towed through a cable, and finally the tug 3 pulls the immersed tube pipe section 2 at the position to be towed to the position to be loaded on the water surface 100.

Further, a plurality of spuds 12 are provided on the deck of the semi-submersible vessel 1, the plurality of spuds 12 being arranged along the peripheral profile of the immersed tube section 2 when it is attached to the deck to ensure that the anchoring of the bottom surface of the immersed tube section 2 corresponds precisely to the elastic support during the subsequent attachment process.

The step S3 comprises the following steps:

s31, submerging the semi-submersible ship 1 until the deck is positioned below the bottom surface of the immersed tube pipe joint 2;

step S32, connecting a second stranded cable device 17 on the semi-submersible ship 1 with the immersed tube pipe joint 2 through a cabled ship;

step S33, separating the tugboat 3 from the immersed tube pipe joint 2;

step S34, the semi-submersible ship 1 pulls and moves the immersed tube pipe joint 2 from the position to be loaded to a transfer position through the second stranded cable device 17;

and S35, floating the semi-submersible ship 1 to the state that the immersed tube pipe joint 2 is abutted to the elastic support 13 on the deck of the semi-submersible ship 1.

Specifically, after the immersed tube coupling 2 reaches the position to be loaded, in order to enable the immersed tube coupling 2 to be placed on the deck, the semi-submersible vessel 1 needs to be submerged to a position where the deck is below the bottom surface of the immersed tube coupling 2, so that the immersed tube coupling 2 is floated on the water surface 100 and is dragged to a position right above the deck, that is, a transfer position. Because the removal of the control immersed tube coupling 2 that the tow boat 3 can not be accurate, then need be connected second stranded cable device 17 and immersed tube coupling 2 that set up on semi-submerged ship 1 and break off the tow boat 3 and be connected with immersed tube coupling 2, semi-submerged ship 1 pulls immersed tube coupling 2 to the translocation position from waiting to load the position through second stranded cable device 17, makes immersed tube coupling 2 be located directly over the deck through the hawser of shrink second stranded cable device 17, semi-submerged ship 1 come up to immersed tube coupling 2 and semi-submerged ship 1's on-deck elastic support 13 butt.

The first cable twisting device 301 and the second cable twisting device 17 are conventional structures, and detailed descriptions of the specific structures of the first cable twisting device 301 and the second cable twisting device 17 are omitted here.

Further, in view of safety in the process of connecting the sinking pipe joints 2, a certain distance is required between the position to be loaded where the sinking pipe joints 2 are located and the transfer position where the semi-submersible vessel 1 is located, and therefore, the connecting ends on the second mooring device 17 need to be transported to the position to be loaded and connected with the sinking pipe joints 2 by the mooring vessel.

Step S35 includes:

step S351, calculating the three-dimensional dynamic positions of the immersed tube pipe joints 2 and the semi-submersible ship 1 in real time through a measurement and control system in the floating process of the semi-submersible ship 1;

step S352, adjusting the position of the semi-submersible ship 1 through the ship dynamic positioning system 16;

step S353, adjusting the position of the immersed tube pipe section 2 by the second stranding device 17, so that the elastic support 13 is aligned to the anchoring member 21.

Specifically, in the floating process of the semi-submersible ship 1, the three-dimensional dynamic positions of the immersed tube pipe joints 2 and the semi-submersible ship 1 are calculated in real time through a measurement and control system, the position of the semi-submersible ship 1 is adjusted through a ship dynamic positioning system 16, meanwhile, the position of the immersed tube pipe joints 2 is adjusted through a second stranding device 17, the elastic supports 13 are aligned to anchoring pieces 21, and the elastic supports 13 on the deck of the semi-submersible ship 1 correspond to the anchoring pieces 21 at the bottoms of the immersed tube pipe joints 2 one by one.

Specifically, observing and controling the system and comprising multiunit sensor and visual system, multiunit sensor are installed on immersed tube coupling 2 and semi-submerged ship 1, and visual system loads in the control room of semi-submerged ship 1, makes the staff can accurately learn immersed tube coupling 2 and semi-submerged ship 1's relative position to make accurate regulation and control, guaranteed that semi-submerged ship 1 on-board elastic support 13 and the anchor assembly 21 of immersed tube coupling 2 bottom can the one-to-one.

Step S35 is followed by:

s36, floating the semi-submersible ship 1 to a set draft to support the immersed tube joint 2 to leave the water surface 100;

and S37, when the immersed tube joint 2 is completely lifted out of the water surface 100 by the semi-submersible ship 1, regulating the distribution of the ballast water in the cabin through the ballast allocation system 15.

Specifically, after elastic support 13 on semi-submerged ship 1 deck and the anchor assembly 21 butt of immersed tube coupling 2 bottom, semi-submerged ship 1 continues to come up to setting for the draft, leave surface of water 100 with bearing immersed tube coupling 2, semi-submerged ship 1 holds out surface of water 100 with immersed tube coupling 2 completely, adjust cabin ballast water distribution through ballast allotment system 15, realize the evenly distributed of semi-submerged ship transportation system weight, improve the hull sagging condition because of the too big production of heavy dead weight of immersed tube coupling 2 loading position, reduce shearing force and the moment of torsion that causes the hull, and then reduce the deformation of hull, make the steady heart height of hull in safety range simultaneously, guarantee the steady of hull.

After semi-submersible 1 made immersed tube coupling 2 break away from surface of water 100 completely, need be connected elastic support 13 and anchor assembly 21 fixed connection, be connected elastic support 13 and anchor assembly 21 through the bolt in this embodiment, connect fast and dismantle the convenience for the progress of construction.

Further, install bumper shock absorber 14 between anchor assembly 21 and the deck of semi-submerged ship 1, the both ends of bumper shock absorber 14 respectively with the deck of semi-submerged ship 1 and anchor assembly 21 fixed connection, do not do the restriction to the concrete kind of bumper shock absorber 14 here, specifically set up to prestressing force damping spring bumper shock absorber 14 in this embodiment, can effectual reduction hull rock and warp the influence to immersed tube coupling 2. The pre-stressed damping spring damper 14 is a conventional structure, and the detailed structure of the pre-stressed damping spring damper 14 is not described herein.

The number of the elastic supports 13 and the shock absorbers 14 is not limited, and specific calculation should be performed according to the weight of the immersed tube joint 2, in this embodiment, four shock absorbers 14 are arranged on the periphery of each elastic support 13 to support the elastic buttress in all directions, so as to ensure the buffering effect of the elastic buttress.

Elastic support 13, bumper shock absorber 14 and anchor assembly 21 can form a support system, and when firm in connection, the influence of the maximum reduction hull on immersed tube coupling 2 that hangs down or well hunch that the wave zone produced guarantees that immersed tube coupling 2 is intact in the transportation, avoids immersed tube coupling 2 structural damage, has improved the success rate of transportation task greatly, has saved the cost of remaking immersed tube coupling 2 because of the transportation failure simultaneously.

After the immersed tube pipe joint 2 and the semi-submersible ship 1 are flexibly connected into a whole, the semi-submersible ship 1 loaded with the immersed tube pipe joint 2 moves to a target position on the water surface 100 from a transfer position, the immersed tube pipe joint 2 and the semi-submersible ship 1 can form a composite beam structure, the structural strength is improved, the deformation of the semi-submersible ship 1 is reduced, the influence on the immersed tube pipe joint 2 when the semi-submersible ship 1 hangs down or arches in the middle is further reduced, the cracking of the immersed tube pipe joint 2 is reduced, and the structure of the immersed tube pipe joint 2 is prevented from being damaged.

Step S5 comprises the following steps:

and S51, the semi-submersible ship 1 avoids a high wave zone exceeding the designed working condition to reach a target position in a bypassing or waiting navigation mode.

Specifically, in the process that the semi-submersible ship 1 carrying the immersed tube pipe joint 2 moves from the transfer position to the target position on the water surface 100, the semi-submersible ship 1 needs to sail according to the design working condition, the sailing hydrological and climatic conditions are concerned all the time, and the semi-submersible ship 1 avoids a high wave zone exceeding the design working condition to reach the target position in a detour or sailing mode.

After step S5, further comprising:

and S6, separating the immersed tube pipe joint 2 from the semi-submersible vessel 1.

Specifically, step S6 includes:

s61, disconnecting the flexible connection between the semi-submersible ship 1 and the immersed tube pipe joint 2;

s62, sinking the semi-submersible ship 1 to a preset draft to enable the immersed tube pipe joint 2 to float on the water surface 100 and be separated from the semi-submersible ship 1;

and S63, towing the immersed tube pipe joint 2 away from the semi-submersible ship 1 by the tug 3.

After the semi-submersible vessel 1 reaches the target location, the sinking pipe joint 2 needs to be disconnected from the semi-submersible vessel 1. Specifically, the flexible connection between the semi-submersible vessel 1 and the immersed tube joint 2 is disconnected, specifically, the bolt connection between the elastic support 13, the shock absorber 14 and the anchoring piece 21 is removed in this embodiment, then the semi-submersible vessel 1 is sunk to a predetermined draft, so that the immersed tube joint 2 floats on the water surface 100 and is separated from the semi-submersible vessel 1, the tug 3 near the target position is connected with the immersed tube joint 2, and the immersed tube joint 2 is pulled away from the semi-submersible vessel 1 by the tug 3.

Further, keeping away from 1 in-process of semi-submerged ship through 3 tow band immersed tube coupling 2 of tugboat, because immersed tube coupling 2 floats on surface of water 100, be difficult to the accurate control of immersed tube coupling 2, probably cause immersed tube coupling 2 to beat to change and cause the damage even to the ship, consequently need second stranded cable device 17 on the semi-submerged ship 1 to connect simultaneously in immersed tube coupling 2, control immersed tube coupling 2, guarantee that immersed tube coupling 2 steadily keeps away from the deck, accomplish the ocean transportation to immersed tube coupling 2 so far.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The concrete tunnel immersed tube pipe section transportation method is characterized by comprising the following steps:

s1, moving a semi-submersible ship (1) to a transfer position on a water surface (100);

s2, dragging the immersed tube pipe joint (2) at the position to be dragged to the position to be loaded on the water surface (100) by the tug (3);

s3, the semi-submersible ship (1) pulls the immersed tube pipe joint (2) from the position to be loaded to a transfer position, so that the immersed tube pipe joint (2) is positioned on a deck of the semi-submersible ship (1);

s4, flexibly connecting the immersed tube pipe joint (2) with the semi-submersible ship (1);

and S5, moving the semi-submersible ship (1) loaded with the immersed tube pipe joint (2) from the transfer position to a target position on the water surface (100).

2. The method for transporting the concrete tunnel immersed tube pipe section according to the claim 1, wherein the step S2 is preceded by:

s21, discharging water in the dock (200) to enable the immersed tube pipe joint (2) to float;

s22, connecting a first stranded cable device (301) on land (300) with the immersed tube pipe joint (2);

s23, the immersed tube pipe section (2) is pulled out from the dock (200) to a position to be dragged by the first stranding device (301);

and S24, connecting the tug boat (3) with the immersed tube pipe joint (2) at the position to be towed through a cable.

3. The concrete tunnel immersed tube segment transportation method according to claim 1, wherein the step S4 comprises:

the elastic support (13) on the deck of the semi-submersible ship (1) is in one-to-one correspondence with the anchoring pieces (21) at the bottom of the immersed tube pipe joint (2), so that the elastic support (13) is fixedly connected with the anchoring pieces (21).

4. The concrete tunnel immersed tube segment transportation method according to claim 3, wherein the step S3 comprises:

s31, submerging the semi-submersible ship (1) until the deck is positioned below the bottom surface of the immersed tube pipe joint (2);

s32, connecting a second stranded cable device (17) on the semi-submersible ship (1) with the immersed tube pipe joint (2) through a cabled ship;

s33, separating the tug boat (3) from the immersed tube pipe joint (2);

s34, the semi-submersible ship (1) pulls and moves the immersed tube pipe joint (2) from a position to be loaded to a transfer position through a second stranding device (17);

and S35, floating the semi-submersible ship (1) until the immersed tube pipe joint (2) is abutted to an elastic support (13) on a deck of the semi-submersible ship (1).

5. The concrete tunnel immersed tube segment transporting method according to claim 4, wherein the step S35 comprises:

step S351, calculating the three-dimensional dynamic positions of the immersed tube pipe joints (2) and the semi-submersible ship (1) in real time through a measurement and control system in the floating process of the semi-submersible ship (1);

step S352, adjusting the position of the semi-submersible ship (1) through a ship dynamic positioning system (16);

and S353, adjusting the position of the immersed tube pipe joint (2) through a second stranding device (17) to enable the elastic support (13) to be aligned to the anchoring piece (21).

6. The concrete tunnel immersed tube segment transporting method according to claim 4, further comprising, after said step S35:

s36, floating the semi-submersible ship (1) to a set draft to support the immersed tube pipe joint (2) to leave the water surface (100);

and S37, when the immersed tube joint (2) is completely supported out of the water surface (100) by the semi-submersible ship (1), regulating the distribution of ballast water in the cabin through a ballast allocation system (15).

7. The concrete tunnel immersed tube segment transporting method according to claim 3, wherein after the elastic support (13) and the anchor member (21) are fixedly connected, further comprising:

a shock absorber (14) is installed between the anchor (21) and the deck of the semi-submersible vessel (1).

8. The concrete tunnel immersed tube segment transporting method as claimed in claim 1, wherein the step S5 comprises:

and S51, the semi-submersible ship (1) avoids a high wave zone exceeding the design working condition to reach a target position in a bypassing or waiting navigation mode.

9. The concrete tunnel immersed tube segment transporting method according to any one of claims 1-8, further comprising, after said step S5:

and S6, separating the immersed tube pipe joint (2) from the semi-submersible ship (1).

10. The concrete tunnel immersed tube segment transporting method according to claim 9, wherein the step S6 comprises:

s61, disconnecting the flexible connection between the semi-submersible ship (1) and the immersed tube pipe joint (2);

s62, sinking the semi-submersible ship (1) to a preset draft, and floating the immersed tube pipe joint (2) on the water surface (100) to be separated from the semi-submersible ship (1);

and S63, towing the immersed tube pipe joint (2) away from the semi-submersible ship (1) through the tug (3).

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