CN114215109B

CN114215109B - Discharge and barge system and discharge and barge method of negative buoyancy immersed tube

Info

Publication number: CN114215109B
Application number: CN202111433623.4A
Authority: CN
Inventors: 梁邦炎; 梁杰忠; 陈伟彬; 马亿光明; 甘世行; 陈猛; 甘利; 卢建明; 姜政遥; 杨武; 肖阳春; 黄梓雄; 邱燕群
Original assignee: CCCC Fourth Harbor Engineering Co Ltd
Current assignee: CCCC Fourth Harbor Engineering Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2023-02-21
Anticipated expiration: 2041-11-29
Also published as: CN114215109A

Abstract

The invention relates to a discharging and refuting system and a discharging and refuting method for a negative buoyancy immersed tube. The utility model provides a system of refuting of going out of negative buoyancy immersed tube, including semi-submerged barge, the installation is refuted, the fixed anchor block system of transposition, a plurality of auxiliary engineering boats and ships and transposition hawser system are moved to the transposition, transposition hawser system includes preceding horizontal group, back horizontal group and the group of indulging, refuting with the help of auxiliary engineering boats and ships, transposition fixed anchor block system, semi-submerged tower and installation of refuting, it has 2 at least cable groups to be balanced respectively to be provided with at least at the front end of negative buoyancy immersed tube, the rear end makes the front and back end of negative buoyancy immersed tube all can carry out real-time regulation through the hawser group of respective main one assistance, and then make the effort when going out to refute the in-process all satisfy the front end of negative buoyancy immersed tube, rear end displacement when adjusting, and can be better regulation the lateral displacement of negative buoyancy immersed tube, can further reduce the negative buoyancy immersed tube and go out the possibility of refuting between the installation and the semi-submerged tower of refuting and bump in-process, guarantee immersed tube engineering quality.

Description

Discharging and refuting system and discharging and refuting method for negative buoyancy immersed tube

Technical Field

The invention relates to the technical field of negative buoyancy immersed tube discharging and refuting, in particular to a discharging and refuting system and a discharging and refuting method for negative buoyancy immersed tubes.

Background

The conventional immersed tube is a self-floating immersed tube, usually a dry dock is prefabricated, the dry dock is filled with water after the prefabrication is finished, the immersed tube can float naturally, and a steel wire rope with a cable in the dock is immersed into the tube for undocking the immersed tube; the self-floating immersed tube can be directly floated or towed to a convoluted water area for outfitting and sinking operation, and can also be quickly transported to the convoluted water area through a semi-submersible barge in a dry manner, and the immersed tube is directly stranded out and moored in the convoluted water area temporarily for secondary outfitting operation; the secondary outfitting of the self-floating immersed tube needs to be completed by matching of a crane ship and an engineering barge, and the secondary outfitting operation comprises measuring tower installation, floating state calibration, tube top outfitting installation, lifting and hanging barge installation and the like.

The non-self-floating immersed tube is a novel immersed tube, namely a negative buoyancy immersed tube (as the patent application with the publication number of CN 112252367A), and the self weight of the non-self-floating immersed tube is larger than the buoyancy as the name suggests. Compared with the self-floating immersed tube, the non-self-floating immersed tube can save the engineering quantity such as a main body structure, foundation trench backfill and the like due to the fact that the structural height can be reduced to the maximum extent, a freeboard adjusting layer is not required to be arranged, the prefabrication cost and the construction cost can be effectively saved, the design difficulty and the prefabrication difficulty are reduced, the complex operation that the freeboard value is adjusted in water in a floating transportation link can be avoided, the transportation time is favorably shortened, and therefore the non-self-floating immersed tube has important popularization significance and good application prospect.

However, due to the characteristic that the self weight of the non-self-floating immersed tube is greater than the buoyancy, after the semi-submersible barge is transported in a dry mode to a convoluted water area, the semi-submersible barge needs to be installed and refuted to provide buoyancy for twisting and moving the negative buoyancy immersed tube, and because the difference between the distance between the left tower and the right tower of the existing semi-submersible barge and the width of the negative buoyancy immersed tube is small, the distance between the tower and the side surface of the tube section is small when the negative buoyancy immersed tube is transported, if the distance between each side of the immersed tube and the inner side of the tower on the corresponding side is only 4.5m, after the installation refuted to enter the semi-submersible barge, the distance between the two sides of the installation refuted to the two towers is smaller and about 1m, when the negative buoyancy immersed tube is refuted from the semi-submersible barge, the negative buoyancy immersed tube is easy to transversely deviate under the action of water, so that the installation refuted has the possibility of collision with the semi-submersible tower, and the semi-submersible barge, further, the problem that how to damage is caused by the installation of the semi-submersible barge, the quality of the immersed tube is damaged easily caused, and the control of the stable buoyancy tube, and the stable emergence of the installation of the semi-submersible barge is solved.

Disclosure of Invention

The invention aims to: the barge discharging system and the barge discharging method of the negative buoyancy immersed tube are provided aiming at the problems that in the prior art, in the process that the negative buoyancy immersed tube longitudinally discharges and lightens to a designated area from the semi-submersible barge, the stable discharge of the negative buoyancy immersed tube is difficult to control, so that the negative buoyancy immersed tube is easy to collide with the semi-submersible barge tower during the discharge and lightens, the semi-submersible barge tower, the negative buoyancy immersed tube and the installation barge easily cause damage, and the quality of immersed tube engineering is damaged.

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

a barge discharging system of a negative buoyancy immersed tube comprises a semi-submersible barge, an installation barge, a twisting and moving fixed anchor block system, a twisting and moving cable system and a plurality of auxiliary engineering ships;

the mounting barge is used for connecting the top of the negative buoyancy immersed tube and providing buoyancy for the negative buoyancy immersed tube;

the twisting and moving fixed anchor block system comprises a plurality of first anchor blocks positioned in front of the semi-submerged barge bow and a plurality of second anchor blocks positioned at two sides of the semi-submerged barge bow;

all the auxiliary engineering ships are respectively arranged on two sides of the semi-submerged barge;

the twisting and moving mooring rope system is used for controlling the installation barge to drive the negative buoyancy immersed tube to twist and move out of the barge along the longitudinal direction of the semi-submersible barge, and comprises a front transverse adjusting group, a rear transverse adjusting group and a longitudinal moving group, wherein one end of the front transverse adjusting group is connected with a bow part of the installation barge, the other end of the front transverse adjusting group is connected with a tower of the bow part of the semi-submersible barge or a second anchor block, one end of the rear transverse adjusting group is connected with a tail part of the installation barge, the other end of the rear transverse adjusting group is connected with an auxiliary engineering ship, the tower of the tail part of the semi-submersible barge or the tower of the bow part of the semi-submersible barge, one end of the longitudinal moving group is connected with a bow part of the installation barge, the other end of the longitudinal moving group is connected with a first anchor block, the front transverse adjusting group and the rear transverse adjusting group respectively comprise at least two groups of mooring ropes, and each group comprises two mooring ropes which are longitudinally and symmetrically arranged relative to the installation barge.

The bow and the tail of the semi-submerged barge and the bow and the tail of the mounted barge are determined according to the barge outlet direction of the negative buoyancy immersed tube, and the bow is the barge outlet direction.

The first anchor block and the second anchor block are both positioned in a preset area where the negative buoyancy immersed tube is discharged and arrives, the first anchor block is positioned in front of the bow part of the semi-submerged barge, the number of the first anchor block is determined according to actual conditions, and the first anchor block provides a fixed end for a mooring rope of a longitudinal moving group of a stranded moving mooring rope system; the second anchor blocks are positioned on two sides of all the first anchor blocks, the number of the second anchor blocks is determined according to actual conditions, and the second anchor blocks provide fixed ends for cables of the front transverse adjusting group of the cable stranding and moving system. The twisting and moving mooring rope system is used for controlling the negative buoyancy immersed tubes to be twisted and moved out of the barge along the longitudinal direction of the semi-submerged barge, the front transverse adjusting group is used for controlling the transverse displacement of the front end of the negative buoyancy immersed tubes when the twisting and moving barge is moved out, the rear transverse adjusting group is used for controlling the transverse displacement of the rear end of the negative buoyancy immersed tubes when the twisting and moving barge is moved out, the front transverse adjusting group and the rear transverse adjusting group are respectively and symmetrically arranged relative to the longitudinal direction of the installation barge, the longitudinal moving group provides advancing power for the twisting and moving barge, and the mooring rope system is arranged by means of an auxiliary engineering ship, a twisting and moving fixed anchor block system, the semi-submerged barge tower, the installation barge and the like, so that the transverse displacement of the two sides of the front end and the rear end of the installation barge can be adjusted in real time, the transverse position of the negative buoyancy immersed tubes when the negative buoyancy immersed tubes are discharged out of the barge can be stably discharged out of the barge, the possibility of collision between the installation barge and the semi-submerged barge during the discharge barge can be reduced, and the immersed tower barge can be ensured, and the quality of immersed tube engineering can be ensured.

The scheme is characterized in that by means of an auxiliary engineering ship, a twisting and moving fixed anchor block system, a semi-submersible barge tower and an installation barge, at least 2 cable sets are respectively and evenly arranged at the front end and the rear end of a negative buoyancy immersed tube, the front end and the rear end of the negative buoyancy immersed tube can be adjusted in real time through a main cable set and an auxiliary cable set, the discharge barge system of the negative buoyancy immersed tube can meet the requirements of the front end and the rear end of the negative buoyancy immersed tube at any time in the discharge barge process, the acting force during rear end displacement adjustment can be better adjusted, the transverse displacement of the front end and the rear end of the negative buoyancy immersed tube can be better adjusted, the possibility of collision between the installation barge and the semi-submersible barge tower in the discharge barge process of the negative buoyancy immersed tube can be further reduced, and the engineering quality of immersed tube can be ensured.

Preferably, two transverse adjusting winches, two longitudinal adjusting winches, two first positioning winches and two second positioning winches are symmetrically arranged at two ends of the bow and the tail of the installation barge from the longitudinal axis to two sides in sequence, and a plurality of installation barge cable piles are arranged around the top surface of the installation barge;

the corner of the inner side of the tower of the semi-submersible barge close to the horizontal center of the semi-submersible barge is provided with the semi-submersible barge, the middle of the tower at the tail of the semi-submersible barge is provided with a goods moving winch, and the middle of the tower at the bow of the semi-submersible barge is provided with a mooring winch;

the front horizontal adjusting group comprises a third cable group, a fourth cable group and a fifth cable group, one end of the third cable group and one end of the fifth cable group are respectively connected with a first positioning winch or a second positioning winch for mounting a bow barge part, the other end of the third cable group and the fifth cable group are respectively connected with a second anchor block, one end of the fourth cable group is connected with a corresponding mooring winch, and the other end of the fourth cable group is connected with a mounting barge pile for mounting the bow barge part;

the rear transverse adjusting group comprises a cable group I, a cable group II, a cable group VI, a cable group VIII and a cable group IX, wherein one end of the cable group I is connected with a corresponding goods moving winch, and the other end of the cable group I is connected to a mounting barge pile at the mounting barge tail part; one end of the cable group II is connected with a transverse adjustment winch at the tail of the barge, and the other end of the cable group II is connected with a semi-submersible barge cable pile of a semi-submersible barge bow tower; one end of the cable group six is connected with a first positioning winch or a second positioning winch at the barge tail, and the other end of the cable group six is connected with a semi-submersible barge cable pile of a semi-submersible barge bow tower; one end of the cable group eight is connected with a winch of an auxiliary engineering ship outside the semi-submersible barge tail, and the other end of the cable group eight is connected with a mounting barge pile of the mounting barge tail; one end of the cable group nine is connected with a mounting barge pile at the mounting barge tail part, and the other end of the cable group nine is connected with a winch of an auxiliary engineering ship outside the semi-submersible barge bow part;

the longitudinal moving group comprises a cable group seven, one end of the cable group seven is connected with a transverse adjusting winch arranged in the middle of the bow portion of the barge, and the other end of the cable group seven is connected to the first anchor block.

Adopt above-mentioned arrangement mode to refute the top surface of refuting in the installation and set up various winches and the cable stake is refuted in the installation, refutes for the installation and provides diversified function, can satisfy the function of whole negative buoyancy immersed tube work progress, if: the longitudinal adjustment winch and the transverse adjustment winch can be used when the barge foundation groove is installed for twisting movement; the first positioning winch and the second positioning winch are used for preventing typhoon and wind and the like when the barge is installed for design and are used for controlling the installation and barge to be positioned. And various winches and the arrangement of the barge piles are reasonable, various mooring ropes for barge can be conveniently arranged in the process of pulling the negative buoyancy immersed tube out of the barge, the unfavorable phenomena of winding and the like of the mooring rope in the process of twisting and moving the negative buoyancy immersed tube can be avoided, and the twist and the movement of the negative buoyancy immersed tube out of the semi-submersible barge are facilitated.

Arrange 9 groups of hawser groups through above-mentioned arrangement, every group hawser group has two hawsers, and two hawsers are refuted vertical symmetry setting along the semi-submerged, can refute to providing all main horizontal adjustment ability and supplementary horizontal adjustment ability to the position of predetermineeing for the sunken pipe of burden buoyancy is refuted from the semi-submerged and is refuted to going out, and its spatial arrangement is reasonable, can avoid the hawser to refute the in-process at the sunken pipe of burden buoyancy goes out to refute and take place alternately and twine, is favorable to the sunken pipe of burden buoyancy to go out to refute the construction. And the 9 groups of cable groups are arranged in advance, the whole discharging process does not need to be stopped because cables need to be installed, and the discharging efficiency can be improved.

Preferably, before the negative buoyancy immersed tube is pulled out of the barge, the mooring ropes of the cable group II, the mooring rope group six and the mooring rope group nine are arranged around the installation barge, and the mooring rope of the mooring rope group nine bypasses the inner wall of the turret of the bow part of the semi-submersible barge and is externally connected with auxiliary engineering ships towards the two transverse sides of the front end face of the semi-submersible barge, so that the interference between the mooring rope and the turret of the installation barge or the semi-submersible barge in the pulling-out process is avoided.

Preferably, one end of the third cable group is connected with a first positioning winch for mounting a bow part, one end of the fifth cable group is connected with a second positioning winch for mounting a bow part, and one end of the sixth cable group is connected with a first positioning winch for mounting a tail part, so that the third cable group, the fifth cable group and the sixth cable group have larger acute included angles with the longitudinal moving direction of the negative buoyancy immersed tube in the process of pulling out the negative buoyancy immersed tube, and can better provide transverse displacement adjustment for the negative buoyancy immersed tube.

Preferably, before the negative buoyancy immersed tube is pulled out of the barge, the included angle between the mooring rope of the mooring rope group eight and the longitudinal direction of the installation barge is 90 degrees, so that the transverse adjusting capability can be better provided for the rear end of the negative buoyancy immersed tube; the included angle between the mooring rope of the fourth mooring rope group and the longitudinal direction of the installation barge is 44-46 degrees, so that the transverse adjusting capability can be better provided for the front end of the negative buoyancy immersed tube; the included angle between the mooring rope of the mooring rope group seven and the longitudinal direction of the installation barge is 0 degree, and forward power can be better provided for the discharge barge of the negative buoyancy immersed tube.

Preferably, the cables of the front transverse group are arranged crosswise, and the cables of the rear transverse group are arranged opposite to each other with respect to the longitudinal direction of the mounting barge.

The mooring ropes of the front transverse adjusting group are arranged in a crossed manner, so that the angle between the mooring ropes and the acute angle included angle in the longitudinal moving direction of the negative buoyancy immersed tube is larger in the discharging process of the negative buoyancy immersed tube, and transverse displacement adjustment can be better provided for the front end of the negative buoyancy immersed tube. The cables of the rear transverse adjusting group are oppositely arranged in the longitudinal direction of the installation barge, so that the cables are prevented from colliding with the immersed tube measuring tower.

Preferably, the first anchor block and the second anchor block are both located 250m in front of the semi-submerged barge in the longitudinal direction, and the included angle between the second anchor block and the semi-submerged barge and the longitudinal direction of the semi-submerged barge is 30-60 degrees.

The front transverse adjusting group and the longitudinal moving group of the cable winch system are provided with fixed ends conveniently, and stable discharging of the negative buoyancy immersed tube is facilitated.

The refuting method of the negative buoyancy immersed tube adopts the refuting system of the negative buoyancy immersed tube to refute the negative buoyancy immersed tube.

The two sides of the bow part of the installation barge are symmetrically provided with at least four cables of front transverse adjusting groups, and the two sides of the tail part of the installation barge are symmetrically provided with at least four cables of rear transverse adjusting groups, namely, at least four adjusting cables are respectively and evenly arranged on the two sides of the front end and the two sides of the rear end of the negative buoyancy immersed tube, so that the front end and the rear end of the negative buoyancy immersed tube can be adjusted in real time through respective main and auxiliary cable groups in the process of driving the negative buoyancy immersed tube to longitudinally move out of the semi-submersible barge by the winch installation barge, the moving-out system of the negative buoyancy immersed tube can meet the acting force when the front end and the rear end of the negative buoyancy immersed tube are adjusted in a displacement mode at any time, and can simultaneously, quickly and effectively adjust the transverse displacement of the front end and the rear end of the negative buoyancy immersed tube, and can further reduce the possibility of collision between the installation barge and the semi-submersible tower in the moving-out process of the negative buoyancy immersed tube, thereby ensuring the engineering quality of immersed buildings; and because the transverse displacement of the negative buoyancy immersed tube can be quickly and effectively adjusted, the twisting and refuting continuity of the negative buoyancy immersed tube can be ensured.

Preferably, the cables of the front transverse adjusting group of the outlet barge system of the negative buoyancy immersed tube are arranged in a crossed manner, and the cables of the rear transverse adjusting group are oppositely arranged in the longitudinal direction of the outlet barge system;

also comprises the following steps:

s1: the rear transverse adjusting group is mainly controlled by a cable group eight, the cable group one is controlled by a cable group I to install and barge to adjust the transverse displacement of the rear end of the negative buoyancy immersed tube, the front transverse adjusting group is mainly controlled by a cable group four, the cable group three and the cable group five are controlled by a cable group five to install and barge to adjust the transverse displacement of the front end of the negative buoyancy immersed tube, the cable group two, the cable group six and the cable group nine are all in an unstressed state, and the negative buoyancy immersed tube begins to discharge and barge;

s2: when the negative buoyancy immersed tube advances to the position that the front end of the negative buoyancy immersed tube is positioned outside the semi-submersible barge and the longitudinal included angle between the cable group IV and the negative buoyancy immersed tube is changed to 40-50 degrees, the front transverse adjusting group is switched to control the installation barge to adjust the transverse displacement of the front end of the negative buoyancy immersed tube by taking the cable group V as a main control and taking the cable group III as an auxiliary control, and the cable group II, the cable group IV, the cable group VI and the cable group IX are all in an unstressed state;

s3: when the longitudinal included angle between the negative buoyancy immersed tube and the mooring rope group eight and the longitudinal included angle between the negative buoyancy immersed tube and the negative buoyancy immersed tube are changed to 40-50 degrees, the rear transverse adjusting group is switched to be installed and adjusted to transversely displace the rear end of the negative buoyancy immersed tube by taking the mooring rope group two as a main control device and taking the mooring rope group six as an auxiliary control device, and the mooring rope group one, the mooring rope group four, the mooring rope group eight and the mooring rope group nine are all in an unstressed state;

s4: when the longitudinal included angle between the negative buoyancy immersed tube and the cable group II is changed to 40-50 degrees, the rear transverse adjusting group is switched to be installed and adjusted to the transverse displacement of the rear end of the negative buoyancy immersed tube by taking the cable group nine as a main control and taking the cable group two as an auxiliary control, and the cable group I, the cable group IV, the cable group VI and the cable group VIII are all in an unstressed state;

in the steps S1-S4, the installation barge drives the negative buoyancy immersed tube to longitudinally discharge along the semi-submersible barge by controlling the shortening of the mooring rope of the longitudinal moving group.

When the twisting and moving mooring rope system comprises the 9 groups of mooring rope groups, the mooring ropes of the front transverse adjusting group of the outlet barge system of the negative buoyancy immersed tube are arranged in a crossed manner, and the mooring ropes of the rear transverse adjusting group are arranged oppositely in the longitudinal direction of the outlet barge system, before the negative buoyancy immersed tube starts to twist and move out the outlet barge, all the 9 groups of mooring rope groups are connected at the appointed position, so that the mooring rope connection is avoided after the mooring rope needs to be suspended in the twisting and moving-out barge process. In the four steps, at least 8 mooring ropes are used for controlling the transverse displacement of the negative buoyancy immersed tube in each step, and the cable group of the main and at least one auxiliary front transverse adjusting group is arranged at the front end of the negative buoyancy immersed tube of the mooring rope group of the main and auxiliary rear transverse adjusting group arranged at the rear end of the negative buoyancy immersed tube, so that the transverse displacement of the whole refuting process of the negative buoyancy immersed tube can be well adjusted in real time.

In the whole process of refuting the negative buoyancy immersed tube, the cable groups playing a main role in the rear transverse adjusting group and the front transverse adjusting group are not fixed cable groups, but have a rotation process to avoid that the longitudinal included angle between the cable groups playing the main role in the rear transverse adjusting group and the front transverse adjusting group and the negative buoyancy immersed tube in the twisting and moving process is less than 40 degrees, so that the transverse displacement adjusting capability of the cable groups playing the main role in the rear transverse adjusting group and the front transverse adjusting group is ensured. Wherein the absence of force on the cable set indicates that the cable is slack or that the cable has been released.

Preferably, the speed of the longitudinal refuting and advancing of the negative buoyancy immersed tube along the semi-submersible refuge is less than or equal to 0.1m/s, under the speed, the transverse displacement of the negative buoyancy immersed tube can be adjusted more time, and the acting force of the collision between the installation refuge and the tower can be avoided or reduced as much as possible.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the invention relates to a barge discharging system of a negative buoyancy immersed tube, which comprises a semi-submersible barge, an installation barge, a twisting and moving fixed anchor block system, a plurality of auxiliary engineering ships and a twisting and moving cable system, wherein the twisting and moving cable system comprises a front transverse adjusting group, a rear transverse adjusting group and a longitudinal moving group, the front transverse adjusting group is used for controlling the transverse displacement of the front end of the negative buoyancy immersed tube when the twisting and moving cable system is moved out, the rear transverse adjusting group is used for controlling the transverse displacement of the rear end of the negative buoyancy immersed tube when the twisting and moving cable system is moved out, the longitudinal moving group provides advancing power for the twisting and moving cable, and by means of the auxiliary engineering ships, the twisting and moving fixed anchor block system, the semi-submersible tower and the installation barge, at least 2 groups of cable groups are respectively and uniformly arranged at the front end and the rear end of the negative buoyancy immersed tube, so that the front end and the rear end of the negative buoyancy immersed tube can be adjusted in real time through a main and auxiliary cable group, the front end and rear end of the negative buoyancy tube can be better adjusted, the collision can be better, and the quality of the negative buoyancy immersed tube can be further ensured in the barge discharging and the semi-submersible tower.

2. According to the barge discharging method of the negative buoyancy immersed tube, the arrangement of the twisting and moving cable system is carried out according to the barge discharging system of the negative buoyancy immersed tube, so that at least four cables of front transverse adjusting groups are symmetrically arranged on two sides of the bow part of the mounting barge, and at least four cables of rear transverse adjusting groups are symmetrically arranged on two sides of the tail part of the mounting barge, namely at least four adjusting cables are respectively and evenly arranged on two sides of the front end and two sides of the rear end of the negative buoyancy immersed tube, so that the front end and the rear end of the negative buoyancy immersed tube can be adjusted in real time through respective main and auxiliary cable groups in the longitudinal barge discharging process of the semi-submerged barge under the driving of the twisting, the barge discharging system of the negative buoyancy immersed tube can meet the acting force of the negative buoyancy immersed tube during displacement adjustment of the front end and the rear end at any time, and can simultaneously, quickly and effectively adjust the transverse displacement of the front end and the rear end of the negative buoyancy immersed tube, and can further reduce the collision possibility between the mounting caisson and the semi-submerged tower engineering of the semi-submerged barge in the barge discharging process of the negative buoyancy immersed tube; and because the transverse displacement of the negative buoyancy immersed tube can be quickly and effectively adjusted, the twisting and shifting continuity of the negative buoyancy immersed tube can be ensured.

3. When the twisting and moving mooring rope system comprises the 9 groups of mooring rope groups, the mooring ropes of the front transverse adjusting group of the outlet barge system of the negative buoyancy immersed tube are arranged in a crossed manner, and the mooring ropes of the rear transverse adjusting group are arranged oppositely in the longitudinal direction of the outlet barge system, before the negative buoyancy immersed tube starts to twist and move out the outlet barge, all the 9 groups of mooring rope groups are connected at the appointed position, so that the mooring rope connection is avoided after the mooring rope needs to be suspended in the twisting and moving-out barge process.

4. In the whole process of refuting of going out of the heavy pipe of negative buoyancy, the hawser group that plays the primary role in back violently adjusting group and the preceding violently adjusting group is not fixed hawser group, but there is the process of taking turns, the longitudinal contained angle that comes to avoid moving the hawser group that plays the primary role in back violently adjusting group and the preceding violently adjusting group in-process and the heavy pipe of negative buoyancy is less than 40, with this lateral displacement regulating power who plays the primary role hawser group in guaranteeing back violently adjusting group and the preceding violently adjusting group, this kind of mode of using the hawser, make full use of the installation refute the heavy pipe of negative buoyancy of drive goes out of the in-process installation of refuting and half submarine position relation of refuting, make under the prerequisite that satisfies the whole hawser demand of going out of the heavy pipe of negative buoyancy of refuting, can reduce the setting of hawser group quantity, make the heavy buoyancy sunk pipe of refuting refute the process of moving out more orderly.

Drawings

FIG. 1 is a schematic diagram showing the positions of a semi-submersible barge, an installation barge and a negatively buoyant immersed tube in example 1;

FIG. 2 is a schematic position diagram of each winch of the installation barge top surface in the embodiment 1;

FIG. 3 is a plan view of a position limiting pile according to embodiment 1;

FIG. 4 is a side view of a position limiting pile in embodiment 1;

FIG. 5 is a schematic illustration of the position of the cable sets attached to the mounting barge;

FIG. 6 is an enlarged view of a portion of FIG. 5;

FIG. 7 is a schematic view showing the state of the negative buoyancy immersed tube outlet barge 0m in the embodiment 2;

FIG. 8 is a schematic view showing the state where the negative buoyancy immersed tube of example 2 is pulled out of the barge by 20 m;

FIG. 9 is a schematic view showing the state where the negative buoyancy immersed tube of embodiment 2 is pulled out of the barge 70 m;

FIG. 10 is the schematic view of the state of the negative buoyancy sinking pipe of the embodiment 2 that goes out of the barge 90 m;

FIG. 11 is a schematic view showing the state of the negative buoyancy immersed tube outlet barge 150m in example 2.

Icon: 1-semi-submerged barge; 11-tower; 12-a transfer winch; 13-mooring winch; 14-semi-submersible barge pile; 15-limiting piles; 151-upright post; 152-diagonal bracing; 153-rubber pad; 154-flat bracing; 2, mounting and refuting; 21-a first positioning winch; 22-a second positioning winch; 23-longitudinal adjustment of the winch; 24-traversing winch; 25-hoisting the winch; 26-installing a barge pile; 3-sinking the pipe with negative buoyancy; 41-a first anchor block; 42-a second anchor block; 5-auxiliary engineering ships; 61-cable group one; 62-cable group two; 63-cable group three; 64-cable group four; 65-cable group five; 66-cable set six; 67-cable group seven; 68-cable group eight; 69-cable set nine.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

Example 1

The embodiment provides a barge discharging system of a negative buoyancy immersed tube, which is shown in a figure 1-7 and comprises a semi-submersible barge 1, an installation barge 2, a twisting and moving fixed anchor block system, a twisting and moving cable system and a plurality of auxiliary engineering ships 5;

the installation barge 2 is used for connecting the top of the negative buoyancy immersed tube 3 and providing buoyancy for the negative buoyancy immersed tube 3;

the fixed anchor block system comprises a plurality of first anchor blocks 41 positioned in front of the bow of the semi-submerged barge 1 and a plurality of second anchor blocks 42 positioned at two sides of the bow of the semi-submerged barge 1;

all the auxiliary engineering ships 5 are respectively arranged at two sides of the semi-submersible barge 1;

the twisting and moving mooring rope system is used for controlling the installation barge 2 to drive the negative buoyancy immersed tube 3 to twist and move out of the barge along the longitudinal direction of the semi-submersible barge 1, and comprises a front transverse adjusting group, a rear transverse adjusting group and a longitudinal moving group, wherein one end of the front transverse adjusting group is connected with the bow of the installation barge 2, the other end of the front transverse adjusting group is connected with a tower 11 or a second anchor block 42 at the bow of the semi-submersible barge 1, one end of the rear transverse adjusting group is connected with the tail of the installation barge 2, the other end of the rear transverse adjusting group is connected with the auxiliary engineering ship 5, the tower 11 at the tail of the semi-submersible barge 1 or the tower 11 at the bow of the semi-submersible barge 1, one end of the longitudinal moving group is connected with the bow of the installation barge 2, the other end of the longitudinal moving group is connected with a first anchor block 41, the front transverse adjusting group and the rear transverse adjusting group respectively comprise at least two groups of mooring ropes, and each group comprises two mooring ropes which are symmetrically arranged in the longitudinal direction of the installation barge 2.

In the scheme, the bow and the tail of the semi-submerged barge and the bow and the tail of the installed barge are determined according to the barge outlet direction of the negative buoyancy immersed tube, and the bow part is the barge outlet direction. Wherein, a negative buoyancy immersed tube 3 placing area is arranged among the four tower buildings 11 of the semi-submersible barge 1; as shown in fig. 7, the negative buoyancy sinking pipe 3 is placed between the four towers 11, and the width of the negative buoyancy sinking pipe is smaller than the distance between the left tower 11 and the right tower 11 of the semi-submerged barge 1, so that the negative buoyancy sinking pipe 3 can be pulled out of the semi-submerged barge 1 along the longitudinal direction of the semi-submerged barge 1. The width of the installation barge 2 is smaller than the distance between two transverse towers 11 of the semi-submersible barge 1, so that the installation barge 2 can enter the semi-submersible barge 1 and provide buoyancy for the negative buoyancy immersed tube 3 at the top of the negative buoyancy immersed tube 3.

In this embodiment, as shown in fig. 1, the installation barge 2 includes a hull, buoyancy tanks are connected to two sides of the hull, the buoyancy tanks are arranged on the bottom surface of the hull, the height of each buoyancy tank is 3-4m, the width of each buoyancy tank is 2.5-3m, the hull and all the buoyancy tanks can be used for draught, and the hull is used for connecting a immersed tube.

The installation barge 2 adopts the hull and the buoyancy tanks at the two sides of the hull to jointly feed water to provide buoyancy for the immersed tube, so that the installation barge 2 can effectively reduce the width of the buoyancy tanks at the two sides under the condition of meeting the lifting force required by the negative buoyancy immersed tube 3, the width of the buoyancy tanks is in the range of 2.5-3m, the installation barge 2 can enter the semi-submersible barge 1 to provide buoyancy for the outlet of the negative buoyancy immersed tube 3, and the negative buoyancy immersed tube 3 can smoothly go out of the semi-submersible barge 1; and simultaneously, the buoyancy required to be provided by the ship body right above the negative buoyancy immersed tube 3 can be effectively reduced, the draught required by the ship body is reduced, and the installation barge 2 can adapt to the operation conditions of a shallow water area in two construction processes of the barge and the installation of the negative buoyancy immersed tube 3. The flotation tank sets up behind the hull bottom, and the flotation tank drafts earlier, for the hull provides buoyancy, and when the hull drafts, the flotation tank is in the complete draft state, can furthest reduce the hull draft, and then reduces immersed tube draft, is favorable to carrying out secondary fitting-out operation on burden buoyancy immersed tube 3, and is favorable to going out of burden buoyancy immersed tube 3 to refute and install.

Compare in present riding to hang to refute and lift to hang to refute, the installation that is applicable to negative buoyancy immersed tube 3 refutes 2, and it not only satisfies the required lifting force of the installation of negative buoyancy immersed tube 3, can also get into in the semi-submerged refute 1 to refute for the play of negative buoyancy immersed tube 3 provides buoyancy, supplementary negative buoyancy immersed tube 3 safety goes out to refute, and it still is applicable to the operation of shallow water district negative buoyancy immersed tube 3. Of course, the installation barge 2 suitable for the negative buoyancy immersed tube 3 can also be used for the installation of a self-floating immersed tube and can also be suitable for the operation of immersed tubes in deep water areas.

In this embodiment, as shown in fig. 2, two horizontal adjustment winches 24, two longitudinal adjustment winches 23, two first positioning winches 21 and two second positioning winches 22 are symmetrically arranged on the top surfaces of the bow and the tail of the installation barge 2 from the longitudinal axis to two sides in sequence, and a plurality of installation barge piles 26 are further arranged around the top surface of the installation barge 2; wherein, two symmetrically arranged hoisting winches 25 are arranged between the two transverse horizontal adjusting winches 24

Adopt above-mentioned arrangement mode to refute 2's top surface at the installation and set up various winches and the installation refutes bollard 26, refutes 2 for the installation and provides diversified function, can satisfy the function of whole 3 work progress of the immersed tube of negative buoyancy, if: the longitudinal adjustment winch 23 and the transverse adjustment winch can be used when the base groove of the barge 2 is installed for winch movement; the first positioning winch 21 and the second positioning winch 22 are winches for preventing typhoon and wind and the like during the design of the ship for installing the barge 2 and are used for controlling the positioning of the installing barge 2; the hoisting winch 25 has a freight transportation function such as perching work in the secondary perching process. And the arrangement of various winches and the installation of the barge cable pile 26 is reasonable, various mooring ropes for barge can be conveniently arranged in the process of pulling out the negative buoyancy immersed tube 3, the unfavorable phenomena of winding and the like of the mooring rope in the process of twisting and moving the negative buoyancy immersed tube 3 can be avoided, and the twisting and moving out of the negative buoyancy immersed tube 3 from the semi-submersible barge 1 are facilitated.

The semi-submersible barge 1 of the embodiment comprises a semi-submersible barge 1 body, the semi-submersible barge 1 body comprises a deck and towers 11 positioned at four corners of the deck, a plurality of limiting piles 15 are arranged on the top surfaces of the left side and the right side of the deck, all the limiting piles 15 on each side are distributed at intervals along the longitudinal direction of the deck, the distance between two adjacent limiting piles 15 on the same side is 8-12m, a negative buoyancy immersed tube 3 is arranged between the limiting piles 15 on both sides, the distance between one side of each limiting pile 15 and one side of the negative buoyancy immersed tube 3 is smaller than the distance between the corresponding side of the installation barge 2 and the tower 11 on the corresponding side of the semi-submersible barge 1 body, and the height of the top of each limiting pile 15 is greater than or equal to 1/3 of the height of the negative buoyancy immersed tube 3. As shown in fig. 3-4, the limiting pile 15 includes a vertical column 151 and two inclined struts 152, each of the bottoms of the inclined struts 152 and the corresponding bottom of the vertical column 151 are further connected by a flat strut 154, two included angles are formed between the inclined struts 152, two inclined struts 152 are arranged towards the outer side of the deck, two tops of the inclined struts 152 are connected to the middle of the vertical column 151, the bottoms of the two inclined struts 152 are connected to the deck, the bottom of the vertical column 151 is connected to the deck, an anti-collision structure is arranged on one side of the limiting pile 15 facing the negative buoyancy immersed tube 3, the anti-collision structure is arranged along the vertical direction of the vertical column 151, the anti-collision structure is a rubber structure, and the rubber structure is adopted to better prevent the negative buoyancy immersed tube 3 from damaging the negative buoyancy immersed tube 3 when colliding with the limiting pile 15. The rubber structure is according to limit structure's structural setting, can adopt rubber pad 153 etc. and the thickness of rubber pad 153 is calculated and is adjusted according to probably bearing the biggest impact.

Because the limiting pile 15 at each side is positioned between the transverse distance between the tower 11 at the corresponding side and the corresponding side of the negative buoyancy immersed tube 3, the distance between the limiting pile 15 and one side of the negative buoyancy immersed tube 3 is less than the distance between the corresponding side of the installation barge 2 and the tower 11 at the corresponding side of the semi-submersible barge 1 body, and the height of the top of the limiting pile 15 is more than or equal to 1/3 of the height of the negative buoyancy immersed tube 3, the transverse movement of the negative buoyancy immersed tube 3 when the semi-submersible barge 1 is unloaded can be limited, the transverse movement of the installation barge 2 is further limited, and the installation barge 2 is prevented from colliding with the tower 11; if the unloading of the negative buoyancy immersed tube 3 is refuted and the offset appears, the negative buoyancy immersed tube 3 can be preferentially collided with the limiting device, the limiting pile 15 has an anti-collision structure towards one side of the negative buoyancy immersed tube 3, and the anti-collision structure can buffer the impact force of the negative buoyancy immersed tube 3 and the limiting device, so that the damage of the negative buoyancy immersed tube 3 can be reduced. Besides, the direction of twisting movement of the negative buoyancy immersed tube 3 is convenient to guide and adjust, so that the installation and refute 2 and the tower 11 are prevented from colliding, the use safety of the tower 11, the installation and refute 2 and the negative buoyancy immersed tube 3 is guaranteed, and the normal discharge and refute of the negative buoyancy immersed tube 3 are guaranteed.

In this embodiment, as shown in fig. 7, a semi-submersible barge pile 14 is arranged at a corner of the inner side of a tower 11 of the semi-submersible barge pile 14, which is close to the horizontal center of the semi-submersible barge 1, a goods moving winch 12 is arranged in the middle of the tower 11 at the tail of the semi-submersible barge 1, and a mooring winch 13 is arranged in the middle of the tower 11 at the bow of the semi-submersible barge 1, so that a mooring rope of a mooring rope moving system can be conveniently laid. Of course, it is also possible to provide other functional winches on the tower 11 of the semi-submersible barge 1, on the top side of the installation barge 2, in addition to those described above with respect to the winches on the tower 11 and with respect to the winches on the installation barge 2.

In this embodiment, as shown in fig. 5 and 7, the semi-submersible barge 1 is not shown in fig. 5, the first anchor block 41 and the second anchor block 42 are both located 250m in front of the semi-submersible barge 1 in the longitudinal direction, and the offset included angle between the second anchor block 42 and the second anchor block 42 along the longitudinal direction of the semi-submersible barge 1 is 30-60 °, so as to provide a fixed end for the front transverse adjustment group and the longitudinal movement group of the stranded and moved cable system, and facilitate stable barge discharge of the negative buoyancy immersed tube 3.

In this embodiment, as shown in fig. 5, as a better option, the cables of the front transverse adjustment group are arranged in a crossed manner, and the angle between the cable and the acute angle included angle in the longitudinal moving direction of the negative buoyancy immersed tube 3 is larger in the discharging process of the negative buoyancy immersed tube 3, so that the transverse displacement adjustment can be better provided for the front end of the negative buoyancy immersed tube 3. The cables of the rear transverse adjusting group are oppositely arranged relative to the longitudinal direction of the mounting barge 2, so that the cables are prevented from generating position conflict with the immersed tube measuring tower. The cables of the longitudinal moving group are arranged in parallel, so that the forward power can be better provided for the negative buoyancy immersed tube 3.

As shown in fig. 5-7, the front transverse adjustment group comprises a third cable group 63, a fourth cable group 64 and a fifth cable group 65, wherein one end of each of the third cable group 63 and the fifth cable group 65 is connected to the first positioning winch 21 or the second positioning winch 22 on the bow portion of the barge 2, and the other end is connected to the second anchor block 42, specifically, one end of the third cable group 63 is connected to the first positioning winch 21 on the bow portion of the barge 2, and the other end is connected to the second anchor block 42, and one end of the fifth cable group 65 is connected to the second positioning winch 22 on the bow portion of the barge 2, and the other end is connected to the second anchor block 42, so that the acute angle between the third cable group 63 and the fifth cable group 65 and the longitudinal moving direction of the negative buoyancy sinking pipe 3 during the launching of the negative buoyancy sinking pipe 3 is larger, and the transverse displacement adjustment can be better provided for the front end of the negative buoyancy sinking pipe 3. One end of the cable group four 64 is connected with the mooring winch 13 of the semi-submersible barge 1 bow tower 11, and the other end is connected with the barge-mounting pile 26 for mounting the barge 2 bow.

The rear transverse adjustment group comprises a first cable group 61, a second cable group 62, a sixth cable group 66, an eighth cable group 68 and a ninth cable group 69, one end of the first cable group 61 is connected with the cargo moving winch 12 of the tower 11 at the tail of the semi-submersible barge 1, and the other end of the first cable group is connected with the cable pile 26 at the tail of the installation barge 2; one end of the second cable group 62 is connected with a transverse adjustment winch at the tail of the barge 2, and the other end is connected with a semi-submersible barge pile 14 of a bow tower 11 of the semi-submersible barge 1; one end of the cable group six 66 is connected with the first positioning winch 21 or the second positioning winch 22 at the tail of the barge 2, and the other end is connected with the semi-submerged barge cable pile 14 of the bow tower 11 of the semi-submerged barge 1; specifically, one end of the cable group six 66 is connected with the first positioning winch 21 at the tail of the barge 2, and the other end of the cable group six 66 is connected with the semi-submersible barge cable pile 14 of the bow tower 11 of the semi-submersible barge 1, so that the angle of the acute angle included angle between the cable group six 66 and the longitudinal moving direction of the negative buoyancy immersed tube 3 in the process of pulling out the negative buoyancy immersed tube 3 is larger, and the transverse displacement adjustment can be better provided for the rear end of the negative buoyancy immersed tube 3. One end of the cable group eight 68 is connected with a winch of the auxiliary engineering ship 5 outside the tail part of the semi-submersible barge 1, and the other end is connected with a barge-mounting pile 26 at the tail part of the barge 2; one end of the cable group nine 69 is connected with the mounting barge cable pile 26 at the tail part of the mounting barge 2, and the other end is connected with the winch of the auxiliary engineering ship 5 outside the bow part of the semi-submersible barge 1;

the longitudinal moving group comprises a seven cable group 67, one end of the seven cable group 67 is connected with a transverse adjusting winch arranged in the middle of the bow part of the barge 2, and the other end of the seven cable group is connected with the first anchor block 41.

Before the negative buoyancy immersed tube 3 is pulled out of the barge, the second cable group 62, the sixth cable group 66 and the ninth cable group 69 are arranged around the installation barge 2, and the ninth cable group 69 bypasses the inner wall of the turret 11 at the bow of the semi-submerged barge 1 and is connected with the winches of the auxiliary engineering ships 5 towards the two transverse sides of the front end face of the semi-submerged barge 1, so that the interference between the cable and the turret 11 provided with the barge 2 or the semi-submerged barge 1 can be avoided in the pulling-out process.

As a preferred embodiment, before the negative buoyancy immersed tube 3 is pulled out of the barge, the included angle between the mooring rope of the mooring rope group eight 68 and the longitudinal direction of the installation barge 2 is 90 degrees, so that the transverse adjustment capability can be better provided for the rear end of the negative buoyancy immersed tube; the included angle between the mooring rope of the fourth mooring rope group 64 and the longitudinal direction of the mounting barge 2 is 44-46 degrees, so that the transverse adjusting capability can be better provided for the front end of the negative buoyancy immersed tube; the included angle between the mooring rope of the mooring rope group seven 67 and the longitudinal direction of the mounting barge 2 is 0 degree, and forward power can be better provided for the discharge barge of the negative buoyancy immersed tube.

In the outlet barge system of the negative buoyancy immersed tube, the installation barge 2 enters the semi-submersible barge 1 to provide buoyancy for the negative buoyancy immersed tube 3, and the installation barge 2, the tower 11 of the semi-submersible barge 1, the twisting and moving fixed anchor block system and a plurality of auxiliary engineering ships 5 positioned at the left side and the right side of the semi-submersible barge 1 are used as connecting points of the twisting and moving cable system as a tool for driving the negative buoyancy immersed tube 3 to twist and move out, so that the installation barge 2 drives the negative buoyancy immersed tube 3 to twist and move out to provide longitudinal advancing capability and transverse displacement adjusting capability. The twisting and moving mooring rope system comprises a front transverse adjusting group, a rear transverse adjusting group and a longitudinal moving group, wherein the front transverse adjusting group is used for controlling the transverse displacement of the front end of the negative buoyancy immersed tube 3 when the negative buoyancy immersed tube is twisted and moved out of the barge, the rear transverse adjusting group is used for controlling the transverse displacement of the rear end of the negative buoyancy immersed tube 3 when the negative buoyancy immersed tube is twisted and moved out of the barge, the longitudinal moving group provides advancing power for the twisting and moving out of the barge, and by means of an auxiliary engineering ship, a twisting and moving fixed anchor block system, a semi-submerged barge and an installation barge, at least 2 groups of cable rope groups are respectively and evenly arranged at the front end and the rear end of the negative buoyancy immersed tube, so that the front end and the rear end of the negative buoyancy immersed tube can be adjusted in real time through respective main and auxiliary cable rope groups, further the pulling system of the negative buoyancy immersed tube can meet the acting force of the negative buoyancy immersed tube when the front end and the rear end of the negative buoyancy immersed tube are adjusted in the barge-out process at any time, the front end and the rear end of the negative buoyancy immersed tube can be better adjusted, and the transverse displacement between the installation barge and the semi-submerged barge collision between the submarine can be further reduced, and the tower barge engineering can be ensured.

Example 2

The present embodiment provides a refuting method for negative buoyancy immersed pipes, which comprises using the refuting system for negative buoyancy immersed pipes described in embodiment 1 to refute negative buoyancy immersed pipes 3, as shown in fig. 5-11;

specifically, the barge 2 is moved by twisting to drive the negative buoyancy immersed tube 3 to longitudinally discharge along the semi-submersible barge 1: the installation barge 2 drives the negative buoyancy immersed tube 3 to longitudinally move out of the semi-submersible barge 1 to barge forward by controlling the shortening of the mooring rope of the longitudinal moving group, and controls the extension or shortening of the mooring rope of the front transverse adjusting group to control the transverse displacement of the front end of the negative buoyancy immersed tube 3, and controls the extension or shortening of the mooring rope of the rear transverse adjusting group to control the transverse displacement of the rear end of the negative buoyancy immersed tube 3 at the same time until the discharge barge of the negative buoyancy immersed tube 3 is finished.

The mooring rope system is arranged in a twisting and moving manner according to the outlet system of the negative buoyancy immersed tube in the embodiment 1, so that at least four mooring ropes of front transverse adjusting groups are symmetrically arranged on two sides of the bow part of the mounting barge, and at least four mooring ropes of rear transverse adjusting groups are symmetrically arranged on two sides of the tail part of the mounting barge, namely, at least four adjusting mooring ropes are respectively and evenly arranged on two sides of the front end and two sides of the rear end of the negative buoyancy immersed tube, so that in the longitudinal outlet process of the semi-submersible barge 1, the twisting and moving mounting barge 2 drives the negative buoyancy immersed tube 3 to move out along the semi-submersible barge, the front end and the rear end of the negative buoyancy immersed tube can be adjusted in real time through respective main and auxiliary mooring rope groups, the outlet system of the negative buoyancy immersed tube can meet the acting force when the front end and the rear end of the negative buoyancy immersed tube 3 are adjusted in a displacement manner at any time, the transverse displacement of the front end and the rear end of the negative buoyancy immersed tube 3 can be adjusted rapidly and effectively, and the transverse displacement of the front end and the rear end of the negative buoyancy immersed tube 3 can be further reduced, and the collision possibility between the mounting barge 2 and the semi-submersible barge 1 can be ensured, and the tower tube engineering quality of the tower immersed tube 11; and because the transverse displacement of the negative buoyancy immersed tube 3 can be quickly and effectively adjusted, the twisting and shifting continuity of the negative buoyancy immersed tube 3 can be ensured.

In this embodiment, in order to enable the negative buoyancy immersed tube 3 to have more time to adjust the lateral displacement of the negative buoyancy immersed tube 3 in the twisting and moving-out barge process and avoid or reduce the acting force of collision between the installation barge 2 and the tower 11 as much as possible, the longitudinal moving-out barge advancing speed of the negative buoyancy immersed tube 3 along the semi-submersible barge 1 should be controlled to be less than or equal to 0.1m/s as much as possible.

In this embodiment, taking the refuting negative buoyancy immersed tube 3 of the refuting system of the negative buoyancy immersed tube described in embodiment 1 as an example, the method includes the following steps:

as shown in fig. 5-7, one end of a first cable group 61 is connected with a hoisting winch 25 of a tower 11 at the tail of the semi-submersible barge 1, and the other end is connected with a cable pile 26 at the tail of the installation barge 2; one end of the second cable group 62 is connected with a transverse adjusting winch at the tail of the barge 2, and the other end is connected with a semi-submerged barge cable pile 14 of a bow tower 11 of the semi-submerged barge 1; one end of the cable group III 63 is connected with the first positioning winch 21 arranged on the bow part of the barge 2, and the other end is connected with the second anchor block 42; connecting one end of a cable group four 64 with a mooring winch 13 of a semi-submersible barge 1 bow tower 11, and connecting the other end with a barge-mounting pile 26 for mounting a barge 2 bow; connecting one end of a cable group five 65 with a second positioning winch 22 for installing the bow of the barge 2, connecting the other end of the cable group five to a second anchor block 42, connecting one end of a cable group six 66 with a first positioning winch 21 for installing the tail of the barge 2, and connecting the other end of the cable group six with a semi-submersible barge pile 14 of a bow tower 11 of the semi-submersible barge 1; connecting one end of a cable group seven 67 with a transverse adjusting winch arranged in the middle of the bow of the barge 2, and connecting the other end of the cable group seven 67 with the first anchor block 41; one end of the cable group eight 68 is connected with a winch of the auxiliary engineering ship 5 outside the tail part of the semi-submersible barge 1, and the other end is connected with a barge-mounting pile 26 at the tail part of the barge 2; one end of the cable group nine 69 is connected with the barge pile 26 at the tail of the barge 2, and the other end is connected with the winch of the auxiliary engineering ship 5 outside the bow of the semi-submerged barge 1;

before the negative buoyancy immersed tube 3 starts to be stranded and moved out of the barge, all the 9 groups of mooring rope groups are connected at the appointed position, so that the mooring rope connection is avoided after the mooring rope needs to be suspended in the stranding and moving-out process, and the time for the whole discharging and barge process of the negative buoyancy immersed tube 3 can be shortened.

After all of the 9 cable groups are connected at the designated positions, the following steps S1 to S4 are performed. 7-11, cable set three 63 and cable set five 65 of FIGS. 7-11 are shown closer together at a single line, and are positioned on opposite sides as indicated by the en-route markings. In the steps S1-S4, the installation barge 2 drives the negative buoyancy immersed tube 3 to longitudinally discharge along the semi-submersible barge 1 by controlling the shortening of the mooring rope of the longitudinal moving group.

Step S1: the rear transverse adjusting group mainly takes a cable group eight 68 as a main control, the cable group one 61 as an auxiliary control, the mounting barge 2 adjusts the transverse displacement of the rear end of the negative buoyancy immersed tube 3, the front transverse adjusting group mainly takes a cable group four 64 as a main control, the cable group three 63 and the cable group five 65 as an auxiliary control, the mounting barge 2 adjusts the transverse displacement of the front end of the negative buoyancy immersed tube 3, the cable group two 62, the cable group six 66 and the cable group nine 69 are all in an unstressed state, and the negative buoyancy immersed tube 3 starts to move out of the barge;

step S1 is illustrated by taking the example that the negative buoyancy sinking tube 3 is stranded out of the barge 0m-20m from the initial position, and referring to fig. 7-8, the cable group two 62, the cable group six 66 and the cable group nine 69 are all in an unstressed state, i.e. in a relaxed state. The mooring rope group seven 67 is used as advancing power, the mooring ropes of the mooring rope group seven 67 are simultaneously contracted, the mounting barge 2 is dragged to drive the negative buoyancy immersed tube 3 to advance to the first anchor block 41 along the longitudinal direction of the semi-submersible barge 1, meanwhile, the transverse postures of the front end and the rear end of the negative buoyancy immersed tube 3 are constantly monitored, and when transverse displacement occurs at the front end and the rear end of the negative buoyancy immersed tube 3, corresponding actions are made by controlling the mooring ropes at the corresponding ends. Such as: when the rear end of the negative buoyancy sinking tube 3 deflects leftwards, the rear end of the negative buoyancy sinking tube 3 is adjusted rightwards to the original transverse posture by controlling the contraction of the cables on the right side of the cable group eight 68 and the cable group one 61 and simultaneously controlling the elongation of the cables on the left side of the cable group eight 68 and the cable group one 61. In the step S1, each cable group includes two cables, the outgoing process of 0 to 20m is transversely adjusted by 10 cables, the longitudinal included angle between the cable group eight 68 and the semi-submersible barge 1 is changed from 90 degrees to 77 degrees, the longitudinal included angle between the cable group four 64 and the semi-submersible barge 1 is changed from 46 degrees to 59 degrees, and the longitudinal included angle between the cable group seven 67 and the semi-submersible barge 1 is 0 degree.

Step S2: when the negative buoyancy immersed tube 3 advances to the position that the front end of the negative buoyancy immersed tube is positioned outside the semi-submersible barge 1 and the longitudinal included angle between the cable group four 64 and the negative buoyancy immersed tube 3 is changed to 40-50 degrees, the front transverse adjusting group is switched to the installation barge 2 which mainly takes the cable group five 65 as a main control and takes the cable group three 63 as an auxiliary control to adjust the transverse displacement of the front end of the negative buoyancy immersed tube 3, and the cable group two 62, the cable group four 64, the cable group six 66 and the cable group nine 69 are all in an unstressed state;

taking the example that the negatively buoyant immersed tube 3 is stranded out of the barge 20m-70m from the initial position as an example, referring to fig. 8-9, the longitudinal included angle between the cable group four 64 and the negatively buoyant immersed tube 3 is changed from 59 degrees to 90 degrees, then from 90 degrees to 59 degrees, and then from 59 degrees to 44 degrees, in the process that the longitudinal included angle between the cable group four 64 and the negatively buoyant immersed tube 3 is changed from 59 degrees to 44 degrees, in a range, namely, when the negatively buoyant immersed tube 3 advances until the front end thereof is positioned outside the semi-submersible barge 1, and the longitudinal included angle between the cable group four 64 and the negatively buoyant immersed tube 3 is changed to 40-50 degrees, the cable group four 64 is gradually relieved, and is finally dismantled, so that the interference on the refund of the negatively buoyant immersed tube 3 is avoided. The cable group five 65 replaces the cable group four 64 to be used as a cable group playing a main role in the front transverse adjusting group, the cable group three 63 is used as a cable group playing an auxiliary role in the front transverse adjusting group, the cable group five 65 and the cable group three 63 are used for controlling the transverse displacement of the front end of the negative buoyancy immersed tube 3 together, the cable group eight 68 is still used as a cable group playing a main role in the rear transverse adjusting group, the cable group one 61 is used as a cable group playing an auxiliary role in the rear transverse adjusting group to control the transverse displacement of the rear end of the negative buoyancy immersed tube 3, and the longitudinal included angle between the cable group eight 68 and the semi-submersible barge 1 is changed from 77 degrees to 54 degrees. Cable set two 62, cable set six 66 and cable set nine 69 are unstressed and are in a relaxed state.

And step S3: when the negative buoyancy immersed tube 3 advances to the cable group eight 68 and the longitudinal included angle of the negative buoyancy immersed tube 3 is changed to 40-50 degrees, the rear transverse adjusting group is switched to control the mounting barge 2 to adjust the transverse displacement of the rear end of the negative buoyancy immersed tube 3 by taking the cable group two 62 as a main part and the cable group six 66 as an auxiliary part, and the cable group one 61, the cable group four 64, the cable group eight 68 and the cable group nine 69 are all in an unstressed state;

taking the case that the negatively buoyant immersed tube 3 is stranded out of the barge 70m-90m from the initial position as an example to explain step S3, referring to fig. 9-10, in the process that the longitudinal included angle between the cable group eight 68 and the semi-submersible barge 1 is changed from 57 degrees to 47 degrees, in terms of scope, when the negatively buoyant immersed tube 3 advances to the process that the longitudinal included angle between the cable group eight 68 and the negatively buoyant immersed tube 3 is changed to 40-50 degrees, the cable group eight 68 is gradually not stressed any more, and is finally dismantled, so as to avoid interference on the outlet of the negatively buoyant immersed tube 3. The second cable group 62 replaces the eighth cable group 68 to serve as a cable group playing a main role in the rear transverse adjusting group, the sixth cable group 66 serves as a cable group playing an auxiliary role in the rear transverse adjusting group, the second cable group 62 and the sixth cable group 66 together control the transverse displacement of the rear end of the negative buoyancy immersed tube 3, the fifth cable group 65 serving as a cable group playing a main role in the front transverse adjusting group and the third cable group 63 serving as a cable group playing an auxiliary role in the front transverse adjusting group still control the transverse displacement of the front end of the negative buoyancy immersed tube 3, and the longitudinal included angle between the fifth cable group 65 and the half barge 1 is changed from 46 degrees to 50 degrees. The first cable set 61 and the ninth cable set 69 are not stressed and are in a loose state.

And step S4: when the negative buoyancy immersed tube 3 advances to the position where the longitudinal included angle between the cable group II 62 and the negative buoyancy immersed tube 3 is changed to 40-50 degrees, the rear transverse adjusting group is switched to a state where the cable group II 62 is used as a main control, the cable group II 62 is used as an auxiliary control, the mounting barge 2 is used for adjusting the transverse displacement of the rear end of the negative buoyancy immersed tube 3, and the cable group I61, the cable group IV 64, the cable group VI 66 and the cable group VIII 68 are all in an unstressed state;

the step S4 is described by taking the example that the negative buoyancy immersed tube 3 is twisted out of the barge by 90m to 150m from the initial position, referring to fig. 10 to 11, in fig. 11, the negative buoyancy immersed tube 3 reaches the preset position, and the barge is finished. When the vertical included angle between the cable group two 62 and the negative buoyancy sinking pipe 3 is changed from 50 degrees to 40 degrees in the process of advancing the negative buoyancy sinking pipe 3, the vertical included angle between the cable group nine 69 and the negative buoyancy sinking pipe 3 is changed from 47 degrees to 61 degrees, in a range, when the vertical included angle between the cable group two 62 and the negative buoyancy sinking pipe 3 is changed to 40-50 degrees in the process of advancing the negative buoyancy sinking pipe 3, the cable group nine 69 is used as a cable group playing a main role in the rear horizontal adjustment group instead of the cable group two 62, the cable group two 62 is used as a cable group playing an auxiliary role in the rear horizontal adjustment group instead of the cable group six 66, and the cable group nine 69 and the cable group two 62 control the transverse displacement of the rear end of the negative buoyancy sinking pipe 3 together. And the cable group five 65 is still used as the cable group playing a main role in the front transverse adjusting group, the cable group three 63 is used as the cable group playing an auxiliary role in the front transverse adjusting group to control the transverse displacement of the front end of the negative buoyancy immersed tube 3, and the included angle between the cable group five 65 and the longitudinal direction of the semi-submersible barge 1 is changed from 50 degrees to 60 degrees.

In the four steps, at least 8 mooring ropes are used for controlling the transverse displacement of the negative buoyancy immersed tube in each step, and the cable group of the main and at least one auxiliary front transverse adjusting group is arranged at the front end of the negative buoyancy immersed tube of the mooring rope group of the main and auxiliary rear transverse adjusting group arranged at the rear end of the negative buoyancy immersed tube, so that the transverse displacement of the whole refuting process of the negative buoyancy immersed tube can be well adjusted in real time. In the whole process of refuting the negative buoyancy immersed tube, the cable groups playing a main role in the rear transverse adjusting group and the front transverse adjusting group are not fixed cable groups, but have a rotation process to avoid that the longitudinal included angle between the cable groups playing the main role in the rear transverse adjusting group and the front transverse adjusting group and the negative buoyancy immersed tube in the twisting and moving process is less than 40 degrees, so that the transverse displacement adjusting capability of the cable groups playing the main role in the rear transverse adjusting group and the front transverse adjusting group is ensured.

The outlet barge method of the negative buoyancy immersed tube can make full use of resources such as a semi-submerged barge 1, an installation barge 2, and an engineering auxiliary ship on site, needs to arrange a small number of mooring ropes, can quickly and effectively control the transverse displacement of the outlet barge process of the negative buoyancy immersed tube 3, ensures the transverse posture of the negative buoyancy immersed tube 3, can ensure the outlet barge of the negative buoyancy immersed tube 3 to be more stable, reduces the possibility of collision between the installation barge 2 and the semi-submerged barge 1 tower 11 in the outlet barge process of the negative buoyancy immersed tube 3, ensures the engineering quality of the immersed tube, and ensures that the twisting out barge process of the negative buoyancy immersed tube 3 is more orderly.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims

1. The barge discharging system of the negative buoyancy immersed tube is characterized by comprising a semi-submersible barge (1), an installation barge (2), a twisting and moving fixed anchor block system, a twisting and moving cable system and a plurality of auxiliary engineering ships (5);

the mounting barge (2) is used for connecting the top of the negative buoyancy immersed tube (3) and providing buoyancy for the negative buoyancy immersed tube (3);

the fixed anchor block system for the winch moving comprises a plurality of first anchor blocks (41) positioned in front of the bow of the semi-submerged barge (1) and a plurality of second anchor blocks (42) positioned on two sides in front of the bow of the semi-submerged barge (1);

all the auxiliary engineering ships (5) are respectively arranged on two sides of the semi-submerged barge (1);

the twisting and moving mooring rope system is used for controlling the installation barge (2) to drive the negative buoyancy immersed tube (3) to twist and move out of the barge longitudinally along the semi-submerged barge (1), and comprises a front transverse adjusting group, a rear transverse adjusting group and a longitudinal moving group, wherein one end of the front transverse adjusting group is connected with the bow of the installation barge (2), the other end of the front transverse adjusting group is connected with a tower (11) or a second anchor block (42) at the bow of the semi-submerged barge (1), one end of the rear transverse adjusting group is connected with the tail of the installation barge (2), the other end of the rear transverse adjusting group is connected with an auxiliary engineering ship (5), the tower (11) at the tail of the semi-submerged barge (1) or the tower (11) at the bow of the semi-submerged barge (1), one end of the longitudinal moving group is connected with the bow of the installation barge (2), the other end of the longitudinal moving group is connected with a first anchor block (41), the front transverse adjusting group and the rear transverse adjusting group respectively comprise at least two groups of mooring ropes, and each group comprises two mooring ropes symmetrically arranged longitudinally related to the installation barge (2);

two transverse adjusting winches (24), two longitudinal adjusting winches (23), two first positioning winches (21) and two second positioning winches (22) are symmetrically arranged at the two ends of the bow and the tail of the mounting barge (2) from the longitudinal axis to two sides in sequence, and a plurality of mounting barge cable piles (26) are arranged around the top surface of the mounting barge (2);

the corner of the inner side of the tower (11) of the semi-submersible barge cable pile (14), which is close to the horizontal center of the semi-submersible barge (1), is provided with the semi-submersible barge cable pile (14), the middle of the tower (11) at the tail of the semi-submersible barge (1) is provided with a goods moving winch (12), and the middle of the tower (11) at the bow of the semi-submersible barge (1) is provided with a mooring winch (13);

the front transverse adjusting group comprises a third cable group (63), a fourth cable group (64) and a fifth cable group (65), one end of the third cable group (63) is connected with a first positioning winch (21) for installing the bow part of the barge (2), the other end of the third cable group is connected with a second anchor block (42), one end of the fifth cable group (65) is connected with a second positioning winch (22) for installing the bow part of the barge (2), the other end of the fifth cable group is connected with the second anchor block (42), one end of the fourth cable group (64) is connected with a corresponding mooring winch (13), and the other end of the fourth cable group is connected with an installing barge pile (26) for installing the bow part of the barge (2);

the rear transverse adjustment group comprises a first cable group (61), a second cable group (62), a sixth cable group (66), an eighth cable group (68) and a ninth cable group (69), one end of the first cable group (61) is connected with the corresponding goods moving winch (12), and the other end of the first cable group is connected with the mounting barge pile (26) at the tail part of the mounting barge (2); one end of the second cable group (62) is connected with a transverse adjusting winch (24) at the tail of the barge (2), and the other end is connected with a semi-submersible barge cable pile (14) of a bow tower (11) of the semi-submersible barge (1); one end of the cable group six (66) is connected with a first positioning winch (21) or a second positioning winch (22) arranged at the tail of the barge (2), and the other end is connected with a semi-submersible barge cable pile (14) of a bow tower (11) of the semi-submersible barge (1); one end of the cable group eight (68) is connected with a winch of the auxiliary engineering ship (5) outside the tail part of the semi-submersible barge (1), and the other end is connected with a barge cable pile (26) at the tail part of the installation barge (2); one end of the cable group nine (69) is connected with a mounting barge pile (26) at the tail of the mounting barge (2), and the other end is connected with a winch of an auxiliary engineering ship (5) outside the bow of the semi-submerged barge (1);

the longitudinal movement group comprises a cable group seven (67), one end of the cable group seven (67) is connected with a transverse adjusting winch arranged in the middle of the bow part of the barge (2), and the other end of the cable group seven (67) is connected to the first anchor block (41);

before the negative buoyancy immersed tube (3) is pulled out of the barge, cables of a cable group II (62), a cable group six (66) and a cable group nine (69) are arranged outside the installation barge (2), and cables of the cable group nine (69) are connected with auxiliary engineering ships (5) outside the two transverse sides of the front end face of the semi-submerged barge (1) by bypassing the inner wall of a tower (11) at the bow of the semi-submerged barge (1).

2. The barge system according to claim 1, wherein one end of the cable group six (66) is connected with a first positioning winch (21) which is provided with the tail of the barge (2).

3. The refuting system for the negative buoyancy sinking pipe of claim 1, wherein before refuting the negative buoyancy sinking pipe (3), the included angle between the cable of the cable group eight (68) and the longitudinal direction of the installation barge (2) is 90 °, the included angle between the cable of the cable group four (64) and the longitudinal direction of the installation barge (2) is 44-46 °, and the included angle between the cable of the cable group seven (67) and the longitudinal direction of the installation barge (2) is 0 °.

4. The outlet barge system for negative-buoyancy sunken tubes according to any of the claims 1 to 3, wherein the cables of the front horizontal adjustment group are arranged crosswise and the cables of the rear horizontal adjustment group are arranged opposite to each other in relation to the longitudinal direction of the installation barge (2).

5. Barge system according to any of claims 1-3, characterised in that the first anchor block (41) and the second anchor block (42) are located 250m in front of the semi-submersible barge (1) in the longitudinal direction, and the second anchor block (42) are at an angle of 30-60 ° to the semi-submersible barge (1) in the longitudinal direction.

6. A method for launching and refuting negative buoyancy immersed pipes, characterized in that the launching and refuting system of negative buoyancy immersed pipes according to any of claims 1-3 is adopted to launch and refute negative buoyancy immersed pipes (3).

7. The method according to claim 6, wherein the cables of the front horizontal adjusting group of the outlet system of the negative buoyancy immersed tube are arranged crosswise, and the cables of the rear horizontal adjusting group are arranged oppositely with respect to the longitudinal direction of the installation barge (2);

also comprises the following steps:

s1: the rear transverse adjusting group is mainly provided with a cable group eight (68), a cable group one (61) is used as an auxiliary control, the barge (2) is installed and adjusted to adjust the transverse displacement of the rear end of the negative buoyancy immersed tube (3), the front transverse adjusting group is mainly provided with a cable group four (64), a cable group three (63) and a cable group five (65) are used as auxiliary controls, the barge (2) is installed and adjusted to adjust the transverse displacement of the front end of the negative buoyancy immersed tube (3), a cable group two (62), a cable group six (66) and a cable group nine (69) are all in an unstressed state, and the negative buoyancy immersed tube (3) begins to barge;

s2: when the negative buoyancy immersed tube (3) advances to a position where the front end of the negative buoyancy immersed tube is positioned outside the semi-submersible barge (1) and the longitudinal included angle between the cable group four (64) and the negative buoyancy immersed tube (3) is changed to 40-50 degrees, the front transverse adjusting group is switched to adjust the transverse displacement of the front end of the negative buoyancy immersed tube (3) by using the cable group five (65) as a main part and using the cable group three (63) as an auxiliary control installation barge (2), and the cable group two (62), the cable group four (64), the cable group six (66) and the cable group nine (69) are all in an unstressed state;

s3: when the longitudinal included angle between the negative buoyancy immersed tube (3) and the cable group eight (68) is changed to 40-50 degrees when the negative buoyancy immersed tube (3) advances, the rear transverse adjusting group is switched to control the installation barge (2) to adjust the transverse displacement of the rear end of the negative buoyancy immersed tube (3) by taking the cable group two (62) as a main control and taking the cable group six (66) as an auxiliary control, and the cable group one (61), the cable group four (64), the cable group eight (68) and the cable group nine (69) are all in an unstressed state;

s4: when the longitudinal included angle between the negative buoyancy immersed tube (3) and the cable group II (62) is changed to 40-50 degrees when the negative buoyancy immersed tube (3) advances, the rear transverse adjusting group is switched to control the installation barge (2) to adjust the transverse displacement of the rear end of the negative buoyancy immersed tube (3) by taking the cable group nine (69) as a main control and the cable group II (62) as an auxiliary control, and the cable group I (61), the cable group IV (64), the cable group VI (66) and the cable group VIII (68) are all in an unstressed state;

in the steps S1-S4, the installation barge (2) drives the negative buoyancy immersed tube (3) to longitudinally discharge along the semi-submersible barge (1) by controlling the shortening of the mooring rope of the longitudinal moving group.

8. The method for launching of negative-buoyancy sinkers according to claim 7, wherein the speed of longitudinal launching of the negative-buoyancy sinkers (3) along the semi-submersible barge (1) is less than or equal to 0.1m/s.