CN115075272A - Positioning method and positioning system for steel boxed cofferdam in deepwater area - Google Patents
Positioning method and positioning system for steel boxed cofferdam in deepwater area Download PDFInfo
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- CN115075272A CN115075272A CN202210814467.4A CN202210814467A CN115075272A CN 115075272 A CN115075272 A CN 115075272A CN 202210814467 A CN202210814467 A CN 202210814467A CN 115075272 A CN115075272 A CN 115075272A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 387
- 239000010959 steel Substances 0.000 title claims abstract description 387
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004873 anchoring Methods 0.000 claims abstract description 116
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 230000000149 penetrating effect Effects 0.000 claims abstract description 9
- 230000035515 penetration Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 33
- 238000011084 recovery Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/52—Floating cranes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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Abstract
A positioning method and a positioning system for a steel boxed cofferdam in a deepwater zone comprise the following steps: and connecting the first end of the anchor rope to an anchor in water, penetrating the second end of the anchor rope through the first layer of steel pouring jacket cofferdam, and anchoring the end part of the second end to an anchor-retracting system which is arranged in advance at the part of the first layer of steel pouring jacket cofferdam above the water surface. And upwards connecting a second layer of steel boxed cofferdam, upwards drawing the second end of the anchor rope, penetrating the second layer of steel boxed cofferdam, and anchoring the end part of the second end of the anchor rope to an anchor-retracting system which is arranged in the second layer of steel boxed cofferdam in advance. The utility model provides an anchor rope has alleviateed the anchor work load with multilayer steel pouring jacket cofferdam through connection, the reduction of anchor rope quantity, has improved the efficiency of construction to construction cost can be saved. In addition, each layer of steel boxed cofferdam is provided with an anchor collecting system, so that the end part of the anchor rope can be directly anchored in the anchor collecting system of the layer of cofferdam, and the construction efficiency is improved.
Description
Technical Field
The application relates to the technical field of bridge construction, in particular to a positioning method and a positioning system of a steel cofferdam in a deepwater zone.
Background
When the bridge is subjected to foundation construction in a deepwater area, steel box cofferdams are often adopted for construction, and for low-pile bearing platforms, double-wall steel box cofferdams are mostly adopted for construction. When the water depth is larger, the height of the double-wall steel-sleeve box cofferdam is also larger, so that the double-wall steel-sleeve box cofferdam is limited by construction and installation requirements, and the construction needs to be divided into multiple layers. In the related art, when a multilayer cofferdam is constructed, the multilayer steel pouring box cofferdam is positioned through a plurality of anchorage systems respectively, in the process that the steel pouring box cofferdam is connected to be high, the lower steel pouring box cofferdam is positioned in water, the anchorage systems on the lower steel pouring box cofferdam are also positioned in water, and at the moment, the anchorage systems need to be pulled to the anchorage points above the water surface and perform centralized anchorage collection, so that the construction efficiency is low, and the construction cost is high.
Disclosure of Invention
The embodiment of the application provides a positioning method and a positioning system of a steel pouring jacket cofferdam in a deepwater area, and aims to solve the problems of low construction efficiency and high construction cost in the construction process of the steel pouring jacket cofferdam.
A method for positioning a steel boxed cofferdam in a deepwater zone comprises the following steps:
connecting a first end of an anchor rope to an anchor in water, penetrating a second end of the anchor rope to the first layer of steel pouring jacket cofferdam, and anchoring the end part of the second end to an anchor-retracting system which is arranged in advance at the part of the first layer of steel pouring jacket cofferdam above the water surface;
and the second end of the anchor rope is pulled upwards to penetrate through the second layer of steel boxed cofferdam, and the end part of the second end of the anchor rope is anchored in the anchor-receiving system which is arranged in the second layer of steel boxed cofferdam in advance.
Furthermore, each layer of steel jacket box cofferdam is provided with a steering device for the penetration and steering of anchor ropes, the first end of each anchor rope is connected with an anchorage in water, the second end of each anchor rope penetrates through the first layer of steel jacket box cofferdam, and the end part of the second end is anchored in the anchor anchoring system which is arranged in advance at the position, above the water surface, of the first layer of steel jacket box cofferdam, and the anchor anchoring system further comprises:
throwing an anchorage in water;
and sinking the first layer of steel pouring jacket cofferdam into water, and enabling the anchor receiving system and the steering device to be located above the water surface.
Further, the anchorage system that connects the first end of anchor rope in the aquatic, the second end runs through in first layer steel pouring jacket cofferdam, and receives the anchor with the tip of second end in setting up in advance in first layer steel pouring jacket cofferdam and lie in above the surface of water position includes:
and the first end of the anchor rope is connected with an anchor in water, the second end of the anchor rope penetrates through the steering device on the first layer of steel pouring jacket cofferdam, and the end part of the second end is anchored in an anchor anchoring system which is arranged in advance at the position, above the water surface, of the first layer of steel pouring jacket cofferdam.
Furthermore, every layer steel jacket box cofferdam is provided with the device that turns to that is used for the hawser to run through and turn to, upwards connect high second floor steel jacket box cofferdam, take off the hawser from the receipts anchor system on the first layer steel jacket box cofferdam, upwards pull the second end, run through in second floor steel jacket box cofferdam, and receive the anchor in the receipts anchor system who sets up in second floor steel jacket box cofferdam in advance with the tip of the second end of hawser still includes:
after the second layer of steel boxed cofferdam is connected to the high, a temporary anchoring point is arranged at the position of the first layer of steel boxed cofferdam above the water surface;
a temporary anchoring rope is connected between the temporary anchoring point and the anchor rope;
taking down the anchor rope from an anchor receiving system on the first layer of steel pouring jacket cofferdam, rotating the temporary anchor rope around the temporary anchor point and tensioning the anchor rope;
dismounting an anchor collecting system of the first layer of steel boxed cofferdam and mounting the anchor collecting system to the second layer of steel boxed cofferdam;
and (4) detaching the temporary anchoring rope, pulling the second end of the anchoring rope upwards, and penetrating through the second layer of steel boxed cofferdam.
Further, connecting the second layer of steel boxed cofferdam upwards, taking down the second end of the anchor rope from the anchor receiving system on the first layer of steel boxed cofferdam, drawing upwards, penetrating through the second layer of steel boxed cofferdam, and receiving and anchoring the end part of the second end of the anchor rope after the anchor receiving system arranged in the second layer of steel boxed cofferdam in advance further comprises:
and sinking the first layer of steel boxed cofferdam and the second layer of steel boxed cofferdam by a preset distance, and enabling the anchor withdrawing system of the second layer of steel boxed cofferdam to be positioned above the water surface.
Further, upwards connect high second layer steel boxed cofferdam, take off the anchor receiving system on first layer steel boxed cofferdam with the second end of hawser to upwards pull, run through in second layer steel boxed cofferdam, and receive the anchor in the anchor receiving system who sets up in second layer steel boxed cofferdam in advance with the tip of the second end of hawser still includes:
and after the second layer of steel boxed cofferdam is connected to the high position, adjusting the position of the anchor rope of the first layer of steel boxed cofferdam to prevent the steel boxed cofferdam from deviating.
Still provide a positioning system of steel boxed cofferdam in deep water region, it includes:
the anchorage is arranged in water;
the first layer of steel boxed cofferdam is vertically arranged in water;
the second layer of steel boxed cofferdam is vertically arranged at the top end of the first layer of steel boxed cofferdam, the bottom end of the second layer of steel boxed cofferdam is just butted with the top end of the first layer of steel boxed cofferdam, and at least part of the second layer of steel boxed cofferdam is positioned above the water surface;
the anchor collecting system is arranged at the part of the second layer of steel boxed cofferdam above the water surface;
and the anchor rope is provided with a first end and a second end, the first end is connected to the anchor, the second end penetrates through the first layer of steel jacket box cofferdam and the second layer of steel jacket box cofferdam, and the end part of the second end is anchored in the anchoring system on the second layer of steel jacket box cofferdam.
Furthermore, the positioning system further comprises at least two steering devices for penetration and orientation of the anchor rope, the steering devices are respectively arranged at the part, above the water surface, of the second layer of steel jacket box cofferdam and the first layer of steel jacket box cofferdam, at least one steering device is arranged on each layer of steel jacket box cofferdam, the first end of the anchor rope is connected with the anchor, the second end of the anchor rope sequentially penetrates through the steering devices on each layer of steel jacket box cofferdam from bottom to top, and the end part of the second end is anchored in the anchoring system on the second layer of steel jacket box cofferdam.
Furthermore, the positioning system further comprises a temporary anchoring point and a temporary anchoring rope, the temporary anchoring point is arranged on the first layer of steel pouring jacket cofferdam and close to the steering device, one end of the temporary anchoring rope is rotatably connected to the temporary anchoring point, and the other end of the temporary anchoring rope is connected to the anchoring rope.
Further, the temporary anchoring line is connected to the anchor line and the temporary anchoring point by a line clamp.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a positioning method and a positioning system for a steel boxed cofferdam in a deepwater area, wherein the steel boxed cofferdam is divided into a plurality of layers for construction, an anchorage system is formed by an anchorage rope, an anchorage and an anchor withdrawing system, and the multilayer steel boxed cofferdam is penetratingly connected by the anchorage rope, so that the anchor withdrawing workload is reduced, and the construction efficiency is improved. And, the hawser in this application embodiment is with multilayer steel boxed cofferdam through connection mode, and simple structure can save construction cost.
In addition, each layer of steel boxed cofferdam is provided with a receiving anchor system, when the anchor rope runs through each layer of steel boxed cofferdam, the receiving anchor system on the layer of steel boxed cofferdam is positioned above the water surface, therefore, the end part of the anchor rope can be directly received and anchored in the receiving anchor system of the layer of cofferdam without being pulled to other positions for receiving anchors, and the construction efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic positioning diagram of a first layer of steel pouring jacket cofferdam in an embodiment of the present application;
fig. 2 is a schematic butt joint diagram of a second layer of steel boxed cofferdam and a first layer of steel boxed cofferdam in the embodiment of the application;
fig. 3 is a schematic positioning diagram of a second layer of steel boxed cofferdam and a first layer of steel boxed cofferdam in the implementation of the present application.
FIG. 4 is a schematic top view 1/2 of a steel boxed cofferdam in the practice of the present application;
FIG. 5 is a schematic view of the construction of a temporary anchoring point, a temporary anchoring line and a connection state of an anchor line in the practice of the present application;
fig. 6 is a schematic structural diagram of the anchor lines penetrating through the second layer of steel boxed cofferdam after the anchor lines and the temporary anchor lines are detached in the application;
fig. 7 is a schematic structural diagram of the second end of the anchor line anchored to the second layer of steel boxed cofferdam in the application.
Reference numerals:
1. an anchor line; 2. anchorage; 3. steel boxed cofferdam; 4. an anchor retracting system; 41. an anchor retracting device; 42. a pulley block; 5. a steering device; 6. floating; 7. a temporary anchor point; 8. temporarily anchoring the rope; 9. a platform; 10. and (4) rope clamps.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a positioning method and a positioning system of a steel boxed cofferdam in a deepwater area, and can solve the problems of low construction efficiency and high construction cost in the cofferdam construction process.
As shown in fig. 1 to 3, a method for positioning a steel boxed cofferdam in a deepwater zone comprises the following steps:
step 1: the first end of the anchor rope 1 is connected with an anchor 2 in water, the second end of the anchor rope penetrates through the first layer of steel pouring jacket cofferdam 3, and the end part of the second end is anchored in an anchor anchoring system 4 which is arranged in advance at the position, above the water surface, of the first layer of steel pouring jacket cofferdam 3.
Step 2: upwards connect high second layer steel boxed cofferdam 3, take off the anchor system 4 on first layer steel boxed cofferdam 3 with the second end of hawser 1 to upwards pull, run through in second layer steel boxed cofferdam 3, and receive the anchor in the anchor system 4 who sets up in second layer steel boxed cofferdam 3 in advance with the tip of the second end of hawser 1.
Specifically, in step 1, the anchor recovery system 4 is disposed on the steel boxed cofferdam 3 before the steel boxed cofferdam 3 is placed in water. Preferably, the anchor recovery system 4 is positioned on the outer wall of each layer of steel boxed cofferdam 3 and close to the top end of the layer of steel boxed cofferdam 3, when the steel boxed cofferdam 3 sinks into the water, the steel boxed cofferdam 3 floats by itself, and the anchor recovery system 4 positioned at the top end of the steel boxed cofferdam is positioned above the water surface, so that the anchor recovery work of the end part of the anchor rope 1 is facilitated, and the anchor recovery system 4 is prevented from being damaged after being soaked in the water. In particular, the mooring system 4 may comprise a mooring device 41 and a pulley block, the mooring device 41 cooperating with the pulley block 42 to tension the mooring line 1 and to moor the second end of the mooring line 1. The anchor retrieval device 41 may be a winch. In the embodiment of the application, a platform 9 is arranged on the outer wall of the steel boxed cofferdam 3 and used for placing the anchor collecting device 41, and a protective railing is further arranged on the periphery of the platform 9.
Specifically, as shown in fig. 4, in the embodiment of the present application, the total height of the steel boxed cofferdam 3 is 30 meters, the construction is performed in two layers, and the height of each layer of the steel boxed cofferdam 3 is 15 meters. The number of layers of the steel casing box cofferdam 3 is two, the number of the anchor withdrawing systems 4 on each layer of the steel casing box cofferdam 3 is four, the four anchor withdrawing systems 4 are positioned at the same height and are symmetrically arranged, at the moment, the number of the anchor ropes 1 is four, the number of the anchors 2 is four, one anchor rope 1, one anchor 2 and a plurality of anchor withdrawing systems 4 through which the anchor rope 1 penetrates can form a set of anchor system, the four sets of anchor systems position the steel casing box cofferdam 3, and the overall stability and the stress balance of the steel casing box cofferdam 3 in the construction process are guaranteed.
In other embodiments, the number of anchor systems on each layer of steel boxed cofferdam 3 can be set according to actual conditions, and preferably, the plurality of anchor retracting systems 4 on each layer of steel boxed cofferdam 3 are symmetrically arranged, so that the structural stability and the stress balance of the steel boxed cofferdam 3 are ensured.
In other embodiments, the number of layers of the steel boxed cofferdam 3 may be more than two, when the number of layers of the steel boxed cofferdam 3 is more than two, the anchor rope 1 penetrates through each layer of the steel boxed cofferdam 3 according to the step 2 until the anchor rope 1 penetrates through the top layer of the steel boxed cofferdam 3, and the end of the second end of the anchor rope 1 is anchored in the anchoring system 4 which is arranged in the top layer of the steel boxed cofferdam 3 in advance. Taking a third layer of steel boxed cofferdam 3 and a fourth layer of steel boxed cofferdam 3 as examples, the positioning method of the embodiment of the application is introduced:
and (3) after the end part of the second end of the anchor rope 1 is anchored in the anchoring system 4 which is arranged in the second layer of steel boxed cofferdam 3 in advance, sinking the first layer of steel boxed cofferdam 3 and the second layer of steel boxed cofferdam 3 for a preset distance, and keeping the anchoring system 4 on the second layer of steel boxed cofferdam 3 above the water surface all the time. Upwards connect high third layer steel pouring jacket cofferdam 3, take off the anchor receiving system on second layer steel pouring jacket cofferdam 3 with the second end of hawser 1 to upwards pull, run through in third layer steel pouring jacket cofferdam 3, and receive the anchor in the anchor receiving system 4 who sets up in third layer steel pouring jacket cofferdam 3 in advance with the tip of the second end of hawser 1.
And the end part of the second end of the anchor rope 1 is anchored after an anchor-receiving system 4 which is arranged in the third layer of steel pouring jacket cofferdam 3 in advance, the first layer of steel pouring jacket cofferdam 3, the second layer of steel pouring jacket cofferdam 3 and the third layer of steel pouring jacket cofferdam 3 are sunk for a preset distance, and the anchor-receiving system 4 on the third layer of steel pouring jacket cofferdam 3 is always kept above the water surface. And (3) upwards heightening the fourth layer of steel boxed cofferdam 3, taking down the second end of the anchor rope 1 from the anchor receiving system on the third layer of steel boxed cofferdam 3, upwards drawing the anchor rope to penetrate through the fourth layer of steel boxed cofferdam 3, and receiving and anchoring the end part of the second end of the anchor rope 1 to the anchor receiving system 4 which is arranged in the fourth layer of steel boxed cofferdam 3 in advance.
And analogizing until the anchor rope 1 penetrates through the top-layer steel pouring jacket cofferdam 3, and anchoring the end part of the second end of the anchor rope 1 to an anchor-retracting system 4 which is arranged in the top-layer steel pouring jacket cofferdam 3 in advance.
Further, each layer of steel boxed cofferdam 3 is provided with a steering device 5 for the penetration and steering of the anchor rope 1, and the method also comprises the following steps before the step 1: an anchorage 2 is arranged in water. The first layer of steel pouring jacket cofferdam 3 is lowered into the water with the mooring system 4 and the steering 5 both above the water surface.
Specifically, in the above steps, the anchor rope 1 is in through connection with the steel boxed cofferdam 3 through the steering device 5, so that the direct drilling on the steel boxed cofferdam 3 can be avoided, the damage to the structure of the steel boxed cofferdam 3 can be avoided, and the sealing performance of the steel boxed cofferdam 3 can be influenced. And the steering device 5 on each layer of steel boxed cofferdam 3 is close to the anchor withdrawing system 4 of the layer so as to facilitate the traction and the anchor withdrawing of the anchor rope 1. The steering device 5 and the mooring system 4 are both located above the water surface to facilitate mooring work at the end of the mooring line 1.
Specifically, in the above step, the steering device 5 on the first layer of steel boxed cofferdam 3 allows the anchor line 1 to be pulled in any direction. On bottom steel pouring jacket cofferdam 3, turn to device 5 with hawser 1 from the slope become vertical, the anchor rope 1 is all the time at first layer steel pouring jacket cofferdam 3 to the action point of steel pouring jacket cofferdam 3, the contained angle of hawser 1 and anchorage 2 is little, anchorage 2 need not throw and establish very far, and the anchoring is efficient. Moreover, the restoring moment of the anchor rope 1 to the steel boxed cofferdam 3 is large, the steel boxed cofferdam 3 is more stable, the construction efficiency is higher, and the cost is lower. Alternatively, the steering device 5 may be a steering horse-shoe.
In the embodiment of the application, four steering devices 5 are arranged on each layer of steel boxed cofferdam 3, and one steering device 5 is adjacent to one anchor retracting system 4. Preferably, several steering devices 5 through which the same mooring line 1 extends are located on the same vertical line, facilitating the passage and traction of the mooring line 1.
Further, the step 1 includes: the first end of the anchor rope 1 is connected to an anchorage 2 in the water, and the second end of the anchor rope penetrates through a steering device 5 on the first layer of steel pouring jacket cofferdam 3. And the end part of the second end of the anchor rope 1 is anchored in an anchor anchoring system 4 which is arranged in advance at the part of the first layer of steel pouring jacket cofferdam 3 above the water surface.
Specifically, in the above steps, the anchor rope 1 penetrates through the steering device 5, and the steering device 5 plays a role in guiding and limiting the anchor rope 1, so that the situation that the position of the anchor rope 1 is deviated in the process of heightening the steel pouring jacket cofferdam 3 to influence the stability of the steel pouring jacket cofferdam 3 is avoided. It can be known that when the anchor lines 1 are passed through the second layer of steel boxed cofferdam 3, the second ends of the anchor lines 1 are passed through the steering device 5 on the second layer of steel boxed cofferdam 3 and the ends of the second ends are anchored to the anchoring system 4 of that layer.
Further, as shown in fig. 5 to 7, the step 2 further includes: and after the second layer of steel boxed cofferdam 3 is heightened, a temporary anchoring point 7 is arranged at the position of the first layer of steel boxed cofferdam 3 above the water surface. A temporary anchoring line 8 is connected between the temporary anchoring point 7 and the anchor line 1. And taking down the anchor rope 1 from the anchor receiving system 4 on the first layer of steel pouring jacket cofferdam 3, and rotating the temporary anchoring rope 8 around the temporary anchoring point 7 and tensioning the anchor rope 1. And (4) detaching the anchor collecting system 4 of the first layer of steel boxed cofferdam 3 and installing the anchor collecting system to the second layer of steel boxed cofferdam 3. And (3) detaching the temporary anchoring rope 8, pulling the second end of the anchoring rope 1 upwards to penetrate through the second layer of steel boxed cofferdam 3, and anchoring the end part of the second end of the anchoring rope 1 to an anchoring system 4 which is arranged in the second layer of steel boxed cofferdam 3 in advance.
Specifically, in the above steps, after the second layer of steel box cofferdam 3 is raised, the anchor rope 1 is fixed to the temporary anchoring point 7 through the temporary anchoring rope 8, at this time, the anchor receiving system 4 on the first layer of steel box cofferdam 3 can be detached and turned over to the second layer of steel box cofferdam 3 for use, and the construction cost is saved. Specifically, the temporary anchoring line 8 is connected to the anchor line 1 and the temporary anchoring point 7 by a line clamp 10. The number of the rope clamps 10 can be one or more, and can be set according to actual conditions. Rope clamp 10's simple structure to be convenient for ann tears open, through the mode that rope clamp 10 is connected, can guarantee interim anchor rope 8 and anchor rope 1 and interim anchor point 7 fastness of being connected, can also simplify construction process.
Specifically, the temporary anchoring point 7 may be disposed between the steering device 5 and the anchor retracting system 4 on the first layer of steel pouring jacket cofferdam 3, and the connection between the temporary anchoring line 8 and the anchoring line 1 is located at the portion of the anchoring line 1 that has penetrated through the steering device 5. And, after anchor rope 1 takes off from receipts anchor system 4 on first layer steel pouring jacket cofferdam 3, interim anchor rope 8 makes circular motion around interim anchor point 7, and interim anchor point 7 is in the state of tightening, and immediately be taut anchor rope 1, makes the distance of anchor rope 1 recovery as little as possible. Preferably, the temporary anchoring line 8 is not always positioned with the mooring line 1 through the steering device 5. And (3) after the first layer of steel pouring jacket cofferdam 3 is kept stable, detaching the anchor collecting system 4 on the first layer of steel pouring jacket cofferdam 3, installing the anchor collecting system 4 on the second layer of steel pouring jacket cofferdam 3, and specifically, detaching only the anchor collecting device 41 in the anchor collecting system 4. And then the temporary anchoring rope 8 is detached from the anchoring rope 1, the second end of the anchoring rope 1 is pulled upwards to penetrate through the second layer of steel boxed cofferdam 3, and the end part of the second end of the anchoring rope 1 is anchored in an anchoring system 4 which is arranged in the second layer of steel boxed cofferdam 3 in advance.
In the embodiment of the application, the number of layers of the steel boxed cofferdam 3 is two, so that the anchor receiving system 4 on the first layer of steel boxed cofferdam 3 can be used in a way of being turned over to the second layer of steel boxed cofferdam 3. When the number of piles of steel boxed cofferdam 3 is greater than two-layer, when third layer steel boxed cofferdam 3 need be under construction, can have enough to meet the need anchor system 4 on the second floor steel boxed cofferdam 3 to the use of third layer steel boxed cofferdam 3, analogize to this. Further, when the number of the anchor withdrawing systems 4 on each floor is plural, the number of the anchor lines 1 is also plural, the number of the steering devices 5 is also plural, and the number of the anchor withdrawing systems 4, the anchor lines 1 and the steering devices 5 is the same, in this case, the number of the temporary anchoring points 7 is also plural and is the same as the number of the anchor lines 1, in which case one anchor line 1 is connected to an adjacent one of the temporary anchoring points 7 by one temporary anchoring line 8.
Further, after the step 2, the method further comprises: and sinking the first layer of steel boxed cofferdam 3 and the second layer of steel boxed cofferdam 3 for a preset distance, and enabling the anchor withdrawing system 4 of the second layer of steel boxed cofferdam 3 to be positioned above the water surface. The preset distance can be set according to actual conditions.
Specifically, in the above steps, after the second layer of steel boxed cofferdam 3 is butted with the first layer of steel boxed cofferdam 3, the second end of the anchor rope 1 penetrates through the second layer of steel boxed cofferdam 3, and the end of the second end is anchored in the anchoring system 4 of the second layer of steel boxed cofferdam 3, at this moment, the second layer of steel boxed cofferdam 3 and the first layer of steel boxed cofferdam 3 are connected into a whole, and the whole has a sinking condition. And water is injected between the double walls of the double-wall steel box cofferdam 3 to ensure that the whole steel box cofferdam 3 sinks, and the anchor withdrawing system 4 and the steering device 5 on the second layer of steel box cofferdam 3 are always kept above the water surface in the sinking process, so that the anchor withdrawing work of the end part of the anchor rope 1 is facilitated. It can be known that, can be before sinking, receive anchor system 4 demolish that lie in on first layer steel boxed cofferdam 3, suffer destruction after avoiding soaking, save the cost.
When the number of layers of the steel boxed cofferdam 3 is more than two, the second end of the anchor rope 1 penetrates through the multilayer steel boxed cofferdam 3, the end part of the second end is anchored in the anchoring system 4 of the top layer steel boxed cofferdam 3, the top layer steel boxed cofferdam 3 and all layers of steel boxed cofferdams 3 below form a whole, and the whole has a sinking condition. And (3) sinking the whole, wherein the anchor collecting system 4 on the top-layer steel pouring box cofferdam 3 is always kept above the water surface in the sinking process of the whole. As can be known, before each steel boxed cofferdam is connected with a higher layer and sinks, the anchor collecting system 4 on the steel boxed cofferdam 3 positioned below is dismantled, so that damage after water immersion is avoided, and the cost is saved.
Further, the step 2 further includes: and after the second layer of steel boxed cofferdam 3 is connected to be high, adjusting the position of the anchor rope 1 of the first layer of steel boxed cofferdam 3 to ensure that the steel boxed cofferdam 3 does not deviate.
Specifically, in the above steps, in the process of raising the second layer of steel boxed cofferdam 3, the whole steel boxed cofferdam 3 may be deviated, so that after the second layer of steel boxed cofferdam 3 is raised, the anchor rope 1 on the first layer of steel boxed cofferdam 3 should be rechecked and adjusted, and the whole stability of the steel boxed cofferdam 3 is ensured. It can be known that when the number of layers of the steel boxed cofferdam 3 is larger than two, after each higher layer of steel boxed cofferdam 3 is connected, the anchor rope 1 on the first layer of steel boxed cofferdam 3 should be rechecked and adjusted, so as to ensure the overall stability of the steel boxed cofferdam 3.
The embodiment of the application also provides a positioning system of the steel casing box cofferdam in the deepwater zone, which comprises an anchorage 2, a first layer of steel casing box cofferdam 3, a second layer of steel casing box cofferdam 3, an anchor retracting system 4 and an anchor rope 1, as shown in fig. 3.
Wherein, anchorage 2 sets up in aqueous, and first layer steel jacket box cofferdam 3 is vertical to be set up in aqueous. Second layer steel jacket box cofferdam 3 is vertical to be set up in the top of first layer steel jacket box cofferdam 3, and the bottom of second layer steel jacket box cofferdam 3 docks just with the top of first layer steel jacket box cofferdam 3, and second layer steel jacket box cofferdam 3 is located above the surface of water at least partially. And the anchor collecting system 4 is arranged at the part of the second layer steel boxed cofferdam 3 above the water surface. The anchor rope 1 is provided with a first end and a second end, the first end is connected to the anchor 2, the second end penetrates through the first layer of steel pouring jacket cofferdam 3 and the second layer of steel pouring jacket cofferdam 3, and the end part of the second end is anchored in an anchoring system 4 on the second layer of steel pouring jacket cofferdam 3.
Specifically, the anchor retracting system 4 is arranged on the steel boxed cofferdam 3 before the steel boxed cofferdam 3 is put into water. Preferably, the anchor recovery system 4 is positioned on the outer wall of each layer of steel boxed cofferdam 3 and close to the top end of the layer of steel boxed cofferdam 3, when the steel boxed cofferdam 3 sinks into the water, the steel boxed cofferdam 3 floats by itself, and the anchor recovery system 4 positioned at the top end of the steel boxed cofferdam is positioned above the water surface, so that the anchor recovery work of the end part of the anchor rope 1 is facilitated, and the anchor recovery system 4 is prevented from being damaged after being soaked in the water. In particular, the mooring system 4 may comprise a mooring device 41 and a pulley block 42, the mooring device 41 cooperating with the pulley block 42 to tension the mooring line 1 and moor the second end of the mooring line 1. The anchor retrieval device 41 may be a winch. In the embodiment of the application, a platform 9 is arranged on the outer wall of the steel boxed cofferdam 3 and used for placing the anchor collecting device 41, and a protective railing is further arranged on the periphery of the platform 9.
Specifically, as shown in fig. 4, in the embodiment of the present application, the number of layers of the steel box cofferdam 3 is two, the number of the anchor retracting systems 4 on each layer of the steel box cofferdam 3 is four, the four anchor retracting systems 4 are located at the same height and symmetrically arranged, at this time, the number of the anchor ropes 1 is four, and the number of the anchors 2 is four, wherein one anchor rope 1, one anchor 2 and the plurality of anchor retracting systems 4 through which the anchor rope 1 penetrates can form a set of anchor system, the four sets of anchor systems locate the steel box cofferdam 3, and the overall stability and the stress balance of the steel box cofferdam 3 in the construction process are ensured.
In other embodiments, the number of anchor systems on each layer of steel boxed cofferdam 3 can be set according to actual conditions, and preferably, the plurality of anchor retracting systems 4 on each layer of steel boxed cofferdam 3 are symmetrically arranged, so that the structural stability and the stress balance of the steel boxed cofferdam 3 are ensured.
In other embodiments, the number of layers of steel boxed cofferdam 3 may be more than two, and when the number of layers of steel boxed cofferdam 3 is more than two, the multilayer steel boxed cofferdam 3 is butted right. Each anchor rope 1 runs through in multilayer steel pouring jacket cofferdam 3, until anchor rope 1 runs through out top layer steel pouring jacket cofferdam 3, receive the anchor system 4 of the tip of the second end of anchor rope 1 anchor in the part of setting in advance above the surface of water of top layer steel pouring jacket cofferdam 3. That is, the second layer steel boxed cofferdam 2 may be a middle steel boxed cofferdam 3 or a top layer steel boxed cofferdam 3.
Furthermore, the positioning system of the embodiment of the application further comprises at least two steering devices 5 for penetrating and orienting the anchor rope 1, the steering devices 5 are respectively arranged at the part of the second layer of steel boxed cofferdam 3 above the water surface and the first layer of steel boxed cofferdam 3, and at least one steering device 5 is arranged on each layer of steel boxed cofferdam 3. The first end of the anchor rope 1 is connected to the anchorage 2, the second end of the anchor rope 1 sequentially penetrates through the steering device 5 on each layer of steel box cofferdam 3 from bottom to top, and the end part of the second end is anchored in the anchoring system 4 on the second layer of steel box cofferdam 3.
Specifically, the mooring rope 1 is in through connection with the steel box cofferdam 3 through the steering device 5, so that direct drilling on the steel box cofferdam 3 can be avoided, the structure of the steel box cofferdam 3 is damaged, and the sealing performance of the steel box cofferdam 3 is influenced. When the first layer of steel pouring jacket cofferdam 3 is penetrated through, the steering device 5 and the anchor collecting system 4 which are positioned on the first layer of steel pouring jacket cofferdam 3 are both positioned above the water surface, after the first layer of steel pouring jacket cofferdam 3 is butted with the second layer of steel pouring jacket cofferdam 3, the steering device 5 and the anchor collecting system 4 which are positioned on the first layer of steel pouring jacket cofferdam 3 can be positioned above the water surface or below the water surface, but the steering device 5 and the anchor collecting system 4 which are positioned on the second layer of steel pouring jacket cofferdam 3 are both positioned above the water surface, so that the anchor collecting work of the end part of the anchor rope 1 is facilitated.
Specifically, the steering device 5 on the first layer of steel pouring jacket cofferdam 3 can lead the anchor rope 1 to be pulled in any direction. On bottom steel pouring jacket cofferdam 3, turn to device 5 with hawser 1 from the slope become vertical, the anchor rope 1 is all the time at first layer steel pouring jacket cofferdam 3 to the action point of steel pouring jacket cofferdam 3, the contained angle of hawser 1 and anchorage 2 is little, anchorage 2 need not throw and establish very far, and the anchoring is efficient. Moreover, the restoring moment of the anchor rope 1 to the steel boxed cofferdam 3 is large, the steel boxed cofferdam 3 is more stable, the construction efficiency is higher, and the cost is lower. Alternatively, the steering device 5 may be a steering horse-shoe.
In the embodiment of the application, four steering devices 5 are arranged on each layer of steel boxed cofferdam 3, and one steering device 5 is adjacent to one anchor retracting system 4. Preferably, several steering devices 5 through which the same mooring line 1 extends are located on the same vertical line, facilitating the passage and traction of the mooring line 1.
Specifically, the mooring rope 1 runs through and turns to device 5, turns to device 5 and to mooring rope 1, plays guide and spacing effect, avoids steel pouring jacket cofferdam 3 to connect high in-process, and the skew takes place for the position of mooring rope 1, influences the stability of steel pouring jacket cofferdam 3. It is known that when the anchor lines 1 run through the second layer of steel box cofferdam 3, the second ends of the anchor lines 1 run through the steering means 5 on the second layer of steel box cofferdam 3 and the ends of the second ends are anchored to the anchoring system 4 of that layer.
Further, as shown in fig. 5 to 7, the positioning system of the embodiment of the present application further includes a temporary anchoring point 7 and a temporary anchoring rope 8, the temporary anchoring point 7 is disposed on the first layer of steel boxed cofferdam 3 and is adjacent to the steering device 5, one end of the temporary anchoring rope 8 is rotatably connected to the temporary anchoring point 7, and the other end is connected to the anchoring rope 1.
Specifically, after the second layer of steel boxed cofferdam 3 is heightened, the anchor rope 1 is fixed at the temporary anchoring point 7 through the temporary anchoring rope 8, at the moment, the anchor collecting system 4 on the first layer of steel boxed cofferdam 3 can be detached and turned over to the second layer of steel boxed cofferdam 3 for use, and construction cost is saved.
Specifically, the temporary anchoring point 7 may be disposed between the steering device 5 and the anchor retracting system 4 on the first layer of steel pouring jacket cofferdam 3, and the connection between the temporary anchoring line 8 and the anchoring line 1 is located at the portion of the anchoring line 1 that has penetrated through the steering device 5. And, after anchor rope 1 takes off from receipts anchor system 4 on first layer steel pouring jacket cofferdam 3, interim anchor rope 8 makes circular motion around interim anchor point 7, and interim anchor point 7 is in the state of tightening, and immediately be taut anchor rope 1, makes the distance of anchor rope 1 recovery as little as possible. Preferably, the temporary anchoring line 8 is not always positioned with the mooring line 1 through the steering device 5. And (3) after the first layer of steel pouring jacket cofferdam 3 is kept stable, detaching the anchor collecting system 4 on the first layer of steel pouring jacket cofferdam 3, installing the anchor collecting system 4 on the second layer of steel pouring jacket cofferdam 3, and specifically, detaching only the anchor collecting device 41 in the anchor collecting system 4. And then the temporary anchoring rope 8 is detached from the anchoring rope 1, the second end of the anchoring rope 1 is pulled upwards to penetrate through the second layer of steel boxed cofferdam 3, and the end part of the second end of the anchoring rope 1 is anchored in an anchoring system 4 which is arranged in the second layer of steel boxed cofferdam 3 in advance.
In the embodiment of the application, the number of layers of the steel boxed cofferdam 3 is two, so that the anchor receiving system 4 on the first layer of steel boxed cofferdam 3 can be used in a way of being turned over to the second layer of steel boxed cofferdam 3. When the number of layers of steel boxed cofferdam 3 is greater than two, when third layer steel boxed cofferdam 3 needs to be under construction, can have enough to meet the need anchor system 4 on second layer steel boxed cofferdam 3 to third layer steel boxed cofferdam 3 use, at this moment, should set up interim anchor point 7 and interim mooring rope on second layer steel boxed cofferdam 3. And so on.
Further, when the number of the anchor withdrawing systems 4 on each floor is plural, the number of the anchor lines 1 is also plural, the number of the steering devices 5 is also plural, and the number of the anchor withdrawing systems 4, the anchor lines 1 and the steering devices 5 is the same, in this case, the number of the temporary anchoring points 7 is also plural and is the same as the number of the anchor lines 1, in which case one anchor line 1 is connected to an adjacent one of the temporary anchoring points 7 by one temporary anchoring line 8.
Further, the above-mentioned temporary anchoring line 8 is connected to the anchor line 1 and the temporary anchoring point 7 by means of a line clamp 10. The number of the rope clamps 10 can be one or more, and can be set according to actual conditions. Rope clamp 10's simple structure to be convenient for ann tears open, through the mode that rope clamp 10 is connected, can guarantee interim anchor rope 8 and anchor rope 1 and interim anchor point 7 fastness of being connected, can also simplify construction process.
Based on the embodiment of the positioning system of the steel boxed cofferdam in the deepwater zone shown in fig. 3, the positioning method of the steel boxed cofferdam in the deepwater zone of the application is explained in detail:
step 1: an anchorage 2 is arranged in water. The first layer of steel pouring jacket cofferdam 3 is lowered into the water with the mooring system 4 and the steering 5 both above the water surface.
Step 1: the first end of each anchor rope 1 is connected to an anchorage 2 in water, and the second end of each anchor rope 1 penetrates through a steering device 5 which is arranged on the first layer of steel pouring jacket cofferdam 3 and is adjacent to the anchor rope 1. And the end part of the second end of the anchor rope 1 is anchored in an anchor-retracting system 4 which is arranged in advance at the position of the first layer of steel pouring jacket cofferdam 3 above the water surface.
Step 2: utilize floating crane 6, hoist second floor steel boxed cofferdam 3, on the top of first floor steel boxed cofferdam 3, upwards connect high second floor steel boxed cofferdam 3, treat that second floor steel boxed cofferdam 3 connects high the back of accomplishing, set up interim anchor point 7 at the outer wall that is located the position above the surface of water of first floor steel boxed cofferdam 3, this interim anchor point 7 is close to in above-mentioned steering device 5, and be connected one section interim anchor rope 8 between this interim anchor point 7 and this anchor rope 1, connect the one end of interim anchor rope 8 in anchor rope 1 through rope clamp 10 and have run through out the part that turns to device 5, the other end passes through rope clamp 10 and rotatably connects in this interim anchor point 7.
And step 3: the anchor collecting system 4 on the first layer of steel pouring jacket cofferdam 3 is detached and installed on the second layer of steel pouring jacket cofferdam 3 for use, and the anchor collecting system 4 on the first layer of steel pouring jacket cofferdam 3 is prevented from entering water after sinking. In the process, the temporary anchoring section is required to be in a tensioned state, and the anchor rope 1 is prevented from being excessively recovered, so that the stability of the first layer of steel pouring jacket cofferdam 3 is ensured.
And 4, step 4: and after the first layer of steel sleeve box cofferdam 3 and the second layer of steel sleeve box cofferdam 3 are stabilized, the temporary anchoring section is disassembled, the second end of the anchor rope 1 is pulled upwards, and the second end of the anchor rope 1 penetrates through the steering device on the second layer of steel sleeve box cofferdam 3. And the end of the second end of the anchor line 1 is anchored to an anchor-anchoring system 4 which is arranged in the second layer steel boxed cofferdam 3 in advance.
And 4, step 4: and water is injected between the double walls of the steel boxed cofferdam 3, the first layer of steel boxed cofferdam 3 and the second layer of steel boxed cofferdam 3 are sunk for a preset distance, and the anchor collecting system 4 of the second layer of steel boxed cofferdam 3 is ensured to be always positioned above the water surface. The preset distance can be set according to actual conditions. And (3) rechecking the position of the anchor rope 1 after the steel boxed cofferdam 3 sinks to the position, and tightening the anchor rope 1 to ensure the accurate positioning of the steel boxed cofferdam 3.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the phrase "comprising a. -. said" to define an element does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for positioning a steel boxed cofferdam in a deepwater zone is characterized by comprising the following steps:
connecting a first end of an anchor rope (1) to an anchor (2) in water, penetrating a second end of the anchor rope to a first layer of steel pouring jacket cofferdam (3), and anchoring the end part of the second end to an anchor retracting system (4) which is arranged in advance at the position of the first layer of steel pouring jacket cofferdam (3) above the water surface;
upwards connect high second layer steel jacket box cofferdam (3), take off the anchor system (4) on first layer steel jacket box cofferdam (3) with the second end of hawser (1) to upwards pull, run through in second layer steel jacket box cofferdam (3), and receive the anchor in anchor system (4) that set up in second layer steel jacket box cofferdam (3) in advance with the tip of the second end of hawser (1).
2. The method for positioning the steel boxed cofferdams in the deep water area according to the claim 1, characterized in that, each layer of the steel boxed cofferdam (3) is provided with a steering device (5) for the penetration and steering of the anchor rope (1), the anchor (2) connecting the first end of the anchor rope (1) to the water, the second end penetrates the first layer of the steel boxed cofferdam (3), and the anchor withdrawing system (4) pre-arranged at the position of the first layer of the steel boxed cofferdam (3) above the water surface is preceded by the end part of the second end:
throwing an anchorage (2) in water;
and (3) sinking the first layer of steel pouring jacket cofferdam (3) into water, and enabling the anchor collecting system (4) and the steering device (5) to be located above the water surface.
3. The method for positioning the steel boxed cofferdam in the deep water area as recited in claim 2, wherein the anchor system (4) for connecting the first end of the anchor rope (1) to the anchor (2) in the water, the second end of the anchor rope running through the first layer of steel boxed cofferdam (3), and anchoring the end of the second end to the position which is arranged in advance on the first layer of steel boxed cofferdam (3) and is above the water surface comprises:
the first end of the anchor rope (1) is connected with an anchor (2) in water, the second end of the anchor rope runs through a steering device (5) on the first layer of steel pouring jacket cofferdam (3), and the end part of the second end is anchored in an anchor-retracting system (4) which is arranged on the first layer of steel pouring jacket cofferdam (3) and is positioned above the water surface in advance.
4. The method for positioning the steel boxed cofferdam in the deep water area as claimed in claim 1, wherein each layer of the steel boxed cofferdam (3) is provided with a steering device (5) for the penetration and steering of the anchor rope (1), the second layer of steel boxed cofferdam (3) is upwards connected, the anchor rope (1) is taken down from the anchor receiving system (4) on the first layer of the steel boxed cofferdam (3), the second end is upwards pulled and penetrates the second layer of the steel boxed cofferdam (3), and the end of the second end of the anchor rope (1) is received and anchored in the anchor receiving system (4) which is preset on the second layer of the steel boxed cofferdam (3), further comprising:
after the second layer of steel-sleeve box cofferdam (3) is connected to the high position, a temporary anchoring point (7) is arranged at the position, above the water surface, of the first layer of steel-sleeve box cofferdam (3);
a temporary anchoring rope (8) is connected between the temporary anchoring point (7) and the anchoring rope (1);
taking down the anchor rope (1) from the anchor collecting system (4) on the first layer of steel pouring jacket cofferdam (3), rotating the temporary anchoring rope (8) around the temporary anchoring point (7) and tensioning the anchor rope (1);
detaching the anchor collecting system (4) of the first layer of steel boxed cofferdam (3) and installing the anchor collecting system to the second layer of steel boxed cofferdam (3);
and (4) detaching the temporary anchoring rope (8), drawing the second end of the anchoring rope (1) upwards, and penetrating through the second layer of steel boxed cofferdam (3).
5. The method for positioning the steel boxed cofferdam in the deep water area according to claim 1, wherein the second layer of steel boxed cofferdam (3) is upwards connected, the second end of the anchor rope (1) is taken down from the anchor withdrawing system (4) on the first layer of steel boxed cofferdam (3) and pulled upwards, the anchor rope penetrates through the second layer of steel boxed cofferdam (3), and the end of the second end of the anchor rope (1) is withdrawn and anchored after the anchor withdrawing system (4) which is preset on the second layer of steel boxed cofferdam (3), further comprising:
the first layer of steel boxed cofferdam (3) and the second layer of steel boxed cofferdam (3) are sunk for a preset distance, and an anchor receiving system (4) of the second layer of steel boxed cofferdam (3) is positioned above the water surface.
6. The method for positioning the steel boxed cofferdam in the deep water area as recited in claim 1, wherein the step of connecting the second layer of steel boxed cofferdam (3) upwards, taking the second end of the anchor rope (1) from the anchor receiving system on the first layer of steel boxed cofferdam (3), pulling upwards to penetrate the second layer of steel boxed cofferdam (3), and the step of receiving and anchoring the end of the second end of the anchor rope (1) to the anchor receiving system (4) pre-arranged on the second layer of steel boxed cofferdam (3) further comprises:
and after the second layer of steel boxed cofferdam (3) is connected to be high, adjusting the position of the anchor rope (1) of the first layer of steel boxed cofferdam (3) to ensure that the steel boxed cofferdam (3) does not deviate.
7. A positioning system of a steel boxed cofferdam in a deepwater zone is characterized by comprising:
an anchorage (2) arranged in water;
the first layer of steel pouring jacket cofferdam (3) is vertically arranged in water;
the second layer of steel boxed cofferdam (3) is vertically arranged at the top end of the first layer of steel boxed cofferdam (3), the bottom end of the second layer of steel boxed cofferdam (3) is just butted with the top end of the first layer of steel boxed cofferdam (3), and at least part of the second layer of steel boxed cofferdam (3) is positioned above the water surface;
the anchor collecting system (4) is arranged at the part of the second layer of steel sleeve box cofferdam (3) above the water surface;
the anchor rope (1) is provided with a first end and a second end, the first end is connected to the anchor (2), the second end penetrates through the first layer of steel sleeve box cofferdam (3) and the second layer of steel sleeve box cofferdam (3), and the end part of the second end is anchored in an anchoring system (4) on the second layer of steel sleeve box cofferdam (3).
8. The positioning system of the steel boxed cofferdam in the deepwater zone as set forth in claim 7, characterized in that: the positioning system further comprises at least two steering devices (5) used for penetration and orientation of the anchor rope (1), the steering devices (5) are arranged on the position, above the water surface, of the second layer of steel jacket box cofferdam (3) and the first layer of steel jacket box cofferdam (3) respectively, at least one steering device (5) is arranged on each layer of steel jacket box cofferdam (3), the first end of the anchor rope (1) is connected to the anchorage (2), the second end of the anchor rope penetrates through the steering devices (5) on each layer of steel jacket box cofferdam (3) from bottom to top in sequence, and the end part of the second end is anchored in an anchor retracting system (4) on the second layer of steel jacket box cofferdam (3).
9. The positioning system of the steel boxed cofferdam in the deepwater zone as set forth in claim 8, characterized in that: the positioning system further comprises a temporary anchoring point (7) and a temporary anchoring rope (8), the temporary anchoring point (7) is arranged on the first layer of steel pouring jacket cofferdam (3) and close to the steering device (5), one end of the temporary anchoring rope (8) is rotatably connected to the temporary anchoring point (7), and the other end of the temporary anchoring rope is connected to the anchoring rope (2).
10. The positioning system of the steel boxed cofferdam in the deepwater zone as set forth in claim 9, characterized in that: the temporary anchoring line (8) is connected to the anchoring line (1) and the temporary anchoring point (7) by a line clamp (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210814467.4A CN115075272A (en) | 2022-07-11 | 2022-07-11 | Positioning method and positioning system for steel boxed cofferdam in deepwater area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210814467.4A CN115075272A (en) | 2022-07-11 | 2022-07-11 | Positioning method and positioning system for steel boxed cofferdam in deepwater area |
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| CN109371997A (en) * | 2018-12-04 | 2019-02-22 | 中铁六局集团有限公司 | A kind of double-wall cofferdam and pier construction method |
| CN215329972U (en) * | 2021-07-22 | 2021-12-28 | 中交第二航务工程局有限公司 | Steel cofferdam positioning system for deep water bare rock geology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102359116A (en) * | 2011-07-19 | 2012-02-22 | 中铁大桥局股份有限公司 | Cofferdam turning horse mouth and application thereof |
| CN203846400U (en) * | 2014-03-21 | 2014-09-24 | 中铁大桥局股份有限公司 | Short anchor system for accurate positioning of double-wall steel cofferdam |
| CN108505529A (en) * | 2018-04-20 | 2018-09-07 | 中交第三航务工程局有限公司 | A kind of construction method of the bearing platform construction steel cofferdam of Through Steel case arch bridge |
| CN109371997A (en) * | 2018-12-04 | 2019-02-22 | 中铁六局集团有限公司 | A kind of double-wall cofferdam and pier construction method |
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