An underwater self-dumping anchor pulling system

Abstract

The present application relates to an underwater self-dumping anchor pulling system, belonging to the technical field of bridge foundation construction, and comprising: an above-water anchor pulling assembly, which includes an above-water anchor beam and an above-water anchor fitting. A through hole for passing through a cable anchor is formed in the above-water anchor beam. One end of the cable anchor passes through the through hole and is anchored to the above-water anchor beam through the above-water anchor fitting; an underwater anchor pulling assembly, which includes an underwater anchor beam and an underwater anchor fitting. A groove for passing through the cable anchor is formed in the side wall of the underwater anchor beam. The other end of the cable anchor passes through the groove and is anchored to the underwater anchor beam through the underwater anchor fitting. When the anchor pulling system needs to be released in the present application, after removing the above-water anchor fitting, the pre-tension of the cable anchor is released, and the cable anchor is lowered. The underwater anchor fitting is disengaged from the underwater anchor beam. Subsequently, the cable anchor is pulled outwards at the upper end of the cable anchor, and the underwater anchor fitting and the cable anchor can be disengaged from the groove, completing the rapid disassembly of the anchor pulling system. The disassembly difficulty of the anchor pulling system and the danger of underwater operation are greatly reduced. At the same time, the disassembly time is saved, and good economic benefits are achieved.

Description

Technical Field

[0001] This application relates to the technical field of bridge foundation construction, and particularly to an underwater self-dumping anchor system. Background Art

[0002] A caisson foundation is a commonly used deep-water foundation for large bridges. During the construction process, the caisson needs to be continuously extended and sunk to a certain depth. After the caisson foundation has sunk to the designated position and stabilized, the construction of the bearing platform and further structures such as the tower column can continue. Generally, the caisson foundation does not protrude above the water surface, and the lower part of the bearing platform is underwater. To ensure the construction of the bearing platform above water, a water retaining cofferdam needs to be set around the outer perimeter of the caisson foundation to provide a water-free environment for the construction of the bearing platform. After the construction of the bearing platform is completed, the water retaining cofferdam must be removed. To ensure the convenient installation and removal of the water retaining cofferdam, setting a modular water retaining cofferdam structure is a good method. With a modular water retaining cofferdam structure, the modules of the water retaining cofferdam are connected by male and female tenons and bolts, and a physical connection method of pressure contact is used between the cofferdam and the caisson, and the joint part is filled with a water-blocking material to prevent water leakage.

[0003] However, under the action of external forces, some positions of the water retaining cofferdam may be separated from the caisson foundation due to insufficient pressure on the caisson foundation, and large gaps are likely to occur at the joints, resulting in the inability to prevent water leakage. To ensure that the connection between the water retaining cofferdam and the caisson foundation is pressured at all positions, an anchor system needs to be set. One end of the anchor system pulls the water retaining cofferdam, and the other end pulls the caisson foundation. After applying a pre-tension force, the bottom of the water retaining cofferdam is closely attached to the caisson foundation to achieve the purpose of preventing water leakage.

[0004] When the caisson has not yet sunk to the designated position, the water retaining cofferdam is extended above water and the anchor system is set. Subsequently, the anchor system sinks together with the water retaining cofferdam and the caisson foundation. After the caisson foundation has sunk to the designated position below the water level, the upper anchor head of the anchor system is above the water surface, and the lower anchor head is below the water surface. Since the lower anchor head is underwater, divers need to dive underwater to disassemble the lower anchor head. This disassembly method is not only time-consuming and laborious, with poor economic benefits, but also has a high risk factor and is prone to accidents. Summary of the Invention

[0005] The embodiments of this application provide an underwater self-dumping anchor system to solve the problems in the related art that divers need to dive underwater to disassemble the lower anchor head of the anchor system, resulting in being time-consuming and laborious, having poor economic benefits, having a high risk factor, and being prone to accidents.

[0006] The embodiments of this application provide an underwater self-dumping anchor system, including:

[0007] An above-water anchor assembly, which includes an above-water anchor beam and an above-water anchor fitting. A through hole for passing through a cable is provided on the above-water anchor beam, and one end of the cable passes through the through hole and is anchored to the above-water anchor beam through the above-water anchor fitting;

[0008] The underwater anchor assembly comprises an underwater anchor beam and an underwater anchoring device. The side wall of the underwater anchor beam is provided with a groove for inserting an anchor cable. The other end of the anchor cable inserts into the groove and is anchored to the underwater anchor beam through the underwater anchoring device.

[0009] In some embodiments: the above-water anchor and the anchor cable are symmetrically arranged at both ends of the above-water anchor beam, and the underwater anchor and the anchor cable are symmetrically arranged at both ends of the underwater anchor beam.

[0010] In some embodiments: a steel plate is provided between the underwater anchor and the underwater anchor beam, and a through hole for inserting the anchor cable is opened on the steel plate.

[0011] In some embodiments: the underwater anchor assembly further includes a counterweight block, the counterweight block is located below the underwater anchor, the counterweight block is suspended on the anchor cable and connected to the underwater anchor.

[0012] In some embodiments: the counterweight block is a cylindrical or rectangular structure, the counterweight block is provided with a through hole for inserting the anchor cable, a limiting member for positioning the counterweight block on the anchor cable is provided below the counterweight block, and the limiting member is fixedly connected to the anchor cable.

[0013] In some embodiments: the above-water anchor beam and the underwater anchor beam are I-beam or channel steel structures.

[0014] In some embodiments: the anchor cable is a steel strand or a precision-rolled threaded steel bar.

[0015] In some embodiments: it also includes a caisson foundation and a water retaining cofferdam located on the top of the caisson foundation, the above-water anchor beam is fixedly connected to the water retaining cofferdam, and the underwater anchor beam is fixedly connected to the caisson foundation.

[0016] In some embodiments: the groove is a "U"-shaped or "匚"-shaped structure.

[0017] In some embodiments, the width of the groove gradually increases from the inside to the outside.

[0018] The beneficial effects of the technical solution provided by this application include:

[0019] An embodiment of the present application provides an underwater self-unloading anchor pulling system. Since the anchor pulling system of the present application is provided with an above-water anchor pulling assembly, it includes an above-water anchor beam and an above-water anchor. The above-water anchor beam is provided with a through hole for inserting an anchor cable, one end of the anchor cable is inserted into the through hole and is anchored to the above-water anchor beam through the above-water anchor. An underwater anchor pulling assembly includes an underwater anchor beam and an underwater anchor. The side wall of the underwater anchor beam is provided with a groove for inserting the anchor cable, the other end of the anchor cable is inserted into the groove and is anchored to the underwater anchor beam through the underwater anchor.

[0020] Therefore, the anchor system of the present application applies prestress between the water retaining cofferdam and the caisson foundation through the above-water anchor assembly and the underwater anchor assembly, ensuring a reliable connection between the water retaining cofferdam and the caisson foundation, making the bottom of the water retaining cofferdam closely attached to the caisson foundation, and achieving the purpose of water blocking. When the anchor system needs to be removed, after removing the above-water anchor fittings, the prestress of the anchor cable is released, the anchor cable is lowered, and the underwater anchor fittings are disengaged from the underwater anchor beam. Subsequently, the anchor cable is pulled outwards at the upper end of the anchor cable, and the underwater anchor fittings and the anchor cable can be disengaged from the groove, completing the rapid disassembly of the anchor system. The disassembly of the underwater anchor fittings can be completed by operating the anchor cable above water, greatly reducing the disassembly difficulty of the anchor system and the danger of underwater operations, saving disassembly time at the same time, and having good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present application;

[0023] Figure 2 is Figure 1 a cross-sectional view taken along the A-A direction in

[0024] Reference numerals:

[0025] 1. Above-water anchor fittings; 2. Above-water anchor beam; 3. Anchor cable; 4. Underwater anchor beam; 5. Steel backing plate; 6. Underwater anchor fittings; 7. Counterweight; 8. Water retaining cofferdam; 9. Caisson foundation; 10. Limiting member; 11. Groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0027] The embodiments of the present application provide an underwater self-discharging anchor system, which can solve the problems in the related art that the anchor system requires divers to dive underwater to disassemble the lower anchor head, resulting in time-consuming, laborious, poor economic benefits, high danger coefficient, and easy occurrence of accidents.

[0028] SeeFigure 1 and Figure 2 As shown, the embodiment of the present application provides an underwater self-unloading anchor pulling system, comprising:

[0029] The above-water anchor pulling assembly comprises an above-water anchor beam 2 and an above-water anchor 1. The above-water anchor beam 2 is provided with a through hole for inserting an anchor cable 3. One end of the anchor cable 3 is inserted into the through hole of the above-water anchor beam 2 and then anchored to the above-water anchor beam 2 through the above-water anchor 1.

[0030] The underwater anchor assembly includes an underwater anchor beam 4 and an underwater anchor 6. The side wall of the underwater anchor beam 4 is provided with a groove 11 for inserting the anchor cable 3. The other end of the anchor cable 3 is inserted into the groove 11 of the underwater anchor beam 4 and then anchored to the underwater anchor beam 4 through the underwater anchor 6. The huge prestress on the anchor cable 3 presses the underwater anchor 6 tightly against the underwater anchor beam 4. Even if the groove 11 is provided on the underwater anchor beam 4, the underwater anchor 6 will not be displaced significantly, or even detached from the underwater anchor beam 4.

[0031] The groove 11 of the underwater anchor beam 4 is preferably a "U"-shaped or "匚"-shaped structure, and the width of the groove 11 gradually increases from the inside to the outside, so as to facilitate the anchor cable 3 to quickly escape from the groove 11.

[0032] The caisson foundation 9 and the water retaining cofferdam 8 located on the top of the caisson foundation 9, the bottom of the water retaining cofferdam 8 is in close contact with the top of the caisson foundation 9. The above-water anchor beam 2 is fixedly connected to the water retaining cofferdam 8, and the underwater anchor beam 4 is fixedly connected to the caisson foundation 9. By tensioning the anchor cable 3, prestress is applied between the caisson foundation 9 and the water retaining cofferdam 8 and anchoring, so that the caisson foundation 9 and the water retaining cofferdam 8 are in close contact, achieving the purpose of water blocking. The above-water anchor beam 2 and the underwater anchor beam 4 are I-beam or channel steel structures.

[0033] The anchor system of the present application applies prestress between the water retaining cofferdam 8 and the caisson foundation 9 through the above-water anchor assembly and the underwater anchor assembly, ensuring a reliable connection between the water retaining cofferdam 8 and the caisson foundation 9, so that the bottom of the water retaining cofferdam 8 is in close contact with the caisson foundation 9, thereby achieving the purpose of water blocking.

[0034] When the anchor system needs to be released, the pre-tension of the anchor cable 3 is released after the above-water anchor 1 is removed, the anchor cable 3 is lowered, and the underwater anchor 6 is separated from the underwater anchor beam 4. Then, the anchor cable 3 is pulled out of the groove 11 at the upper end of the anchor cable 3, and the underwater anchor 6 and the anchor cable 3 can be removed from the groove 11, completing the rapid disassembly of the anchor system.

[0035] The anchor pulling system of the embodiment of the present application can complete the disassembly of the underwater anchor 6 by operating the anchor cable 3 on the water, avoiding the need for operators to dive underwater to disassemble the underwater anchor 6 and the anchor cable 3, greatly reducing the difficulty of disassembly of the anchor pulling system and the danger of underwater operations, while saving disassembly time and having good economic benefits.

[0036] In some alternative embodiments: Refer to Figure 1 As shown, an embodiment of the present application provides an underwater self-dumping anchor system. At both ends of the above-water anchor beam 2 of the anchor system, above-water anchor fittings 1 and anchor cables 3 are symmetrically arranged. At both ends of the underwater anchor beam 4, underwater anchor fittings 6 and anchor cables 3 are symmetrically arranged.

[0037] The anchor cables 3 are symmetrically arranged at both ends of the above-water anchor beam 2 and the underwater anchor beam 4, which is beneficial to balancing the stress states of the water retaining cofferdam 8 and the caisson foundation 9, avoiding inclination or overturning caused by unilateral stress on the water retaining cofferdam 8 and the caisson foundation 9, and facilitating the water-blocking and sealing of the water retaining cofferdam 8 and the caisson foundation 9.

[0038] In some alternative embodiments: Refer to Figure 1 and Figure 2 As shown, an embodiment of the present application provides an underwater self-dumping anchor system. A steel backing plate 5 is provided between the underwater anchor fitting 6 and the underwater anchor beam 4 of the anchor system, and a through hole for passing through the anchor cable 3 is formed in the steel backing plate 5.

[0039] The steel backing plate 5 is located around the groove 11 of the underwater anchor beam 4, which is beneficial to the groove 11 reducing the local compressive stress around the groove 11, enabling the underwater anchor beam 4 to withstand greater prestress, and improving the structural strength and service life of the underwater anchor beam 4.

[0040] In some alternative embodiments: Refer to Figure 1 As shown, an embodiment of the present application provides an underwater self-dumping anchor system. The underwater anchor assembly of the anchor system further includes a counterweight 7. The counterweight 7 is located below the underwater anchor fitting 6, and the counterweight 7 is hung on the anchor cable 3 and connected to the underwater anchor fitting 6.

[0041] The counterweight 7 is specifically a concrete block or metal block with a cylindrical or rectangular structure. A through hole for passing through the anchor cable 3 is formed in the counterweight 7. A limiting member 10 for positioning the counterweight 7 on the anchor cable 3 is provided below the counterweight 7, and the limiting member 10 is fixedly connected to the anchor cable 3.

[0042] The anchor cable 3 can be selected as a steel strand or a rolled thread steel bar. When the anchor cable 3 is selected as a steel strand, both the above-water anchor fitting 1 and the underwater anchor fitting 6 are wedge-type anchor fittings, and the limiting member 10 is a clamp. When the anchor cable 3 is selected as a rolled thread steel bar, the above-water anchor fitting 1, the underwater anchor fitting 6, and the limiting member 10 are all nuts.

[0043] The counterweight 7 of the embodiment of the present application is located below the underwater anchor fitting 6, and the counterweight 7 is hung on the anchor cable 3 and connected to the underwater anchor fitting 6. When the anchor system needs to be released, after removing the above-water anchor fitting 1, the prestress of the anchor cable 3 is released, and the anchor cable 3 is lowered. Under the action of the gravity of the counterweight 7 located below the underwater anchor fitting 6, the underwater anchor fitting 6 quickly disengages from the underwater anchor beam 4.

[0044] Working principle

[0045] An embodiment of the present application provides an underwater self-dumping anchor system. Since the anchor system of the present application is provided with an above-water anchor component, which includes an above-water anchor beam 2 and an above-water anchor fitting 1, a through hole for passing through the anchor cable 3 is formed in the above-water anchor beam 2. One end of the anchor cable 3 passes through the through hole and is anchored to the above-water anchor beam 2 through the above-water anchor fitting 1; an underwater anchor component, which includes an underwater anchor beam 4 and an underwater anchor fitting 6, a groove 11 for passing through the anchor cable 3 is formed in the side wall of the underwater anchor beam 4. The other end of the anchor cable 3 passes through the groove 11 and is anchored to the underwater anchor beam 4 through the underwater anchor fitting 6.

[0046] Therefore, the anchor system of the present application applies prestress between the water retaining cofferdam 8 and the caisson foundation 9 through the above-water anchor component and the underwater anchor component, ensuring a reliable connection between the water retaining cofferdam 8 and the caisson foundation 9, making the bottom of the water retaining cofferdam 8 closely attached to the caisson foundation 9, and achieving the purpose of water blocking. When the anchor system needs to be released, after removing the above-water anchor fitting 1, the prestress of the anchor cable 3 is released, and the anchor cable 3 is lowered. The underwater anchor fitting 6 is separated from the underwater anchor beam 4. Subsequently, the anchor cable 3 is pulled outwards at the upper end of the anchor cable 3, and the underwater anchor fitting 6 and the anchor cable 3 can be disengaged from the groove 11, completing the rapid disassembly of the anchor system. The disassembly of the underwater anchor fitting 6 can be completed by operating the anchor cable 3 above the water, greatly reducing the disassembly difficulty of the anchor system and the danger of underwater operation, saving disassembly time at the same time, and having good economic benefits.

[0047] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0048] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0049] The above are only specific embodiments of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to these embodiments shown herein, but rather will conform to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An underwater self-dumping anchor system, characterized in that, include: An above-water anchor assembly, comprising an above-water anchor beam (2) and an above-water anchor (1), wherein the above-water anchor beam (2) is provided with a through hole for inserting an anchor cable (3), and one end of the anchor cable (3) is inserted into the through hole and anchored to the above-water anchor beam (2) through the above-water anchor (1); An underwater anchor assembly, comprising an underwater anchor beam (4) and an underwater anchor (6); a groove (11) for inserting an anchor cable (3) is provided on a side wall of the underwater anchor beam (4); the other end of the anchor cable (3) is inserted into the groove (11) and is anchored to the underwater anchor beam (4) through the underwater anchor (6); The underwater anchor assembly further comprises a counterweight (7), wherein the counterweight (7) is located below the underwater anchor (6), and the counterweight (7) is suspended on the anchor cable (3) and connected to the underwater anchor (6); It also comprises a caisson foundation (9) and a water retaining cofferdam (8) located on the top of the caisson foundation (9), the above-water anchor beam (2) is fixedly connected to the water retaining cofferdam (8), and the underwater anchor beam (4) is fixedly connected to the caisson foundation (9); The width of the groove (11) gradually increases from the inside to the outside.

2. The underwater self-dumping anchor system according to claim 1, characterized in that: The above-water anchor (1) and the anchor cable (3) are symmetrically arranged at both ends of the above-water anchor beam (2), and the underwater anchor (6) and the anchor cable (3) are symmetrically arranged at both ends of the underwater anchor beam (4).

3. The underwater self-dumping anchor system according to claim 1, characterized in that: A steel pad (5) is provided between the underwater anchor (6) and the underwater anchor beam (4), and a through hole for inserting the anchor cable (3) is provided on the steel pad (5).

4. The underwater self-dumping anchor system according to claim 1, characterized in that: The counterweight block (7) is a cylindrical or rectangular structure, and is provided with a through hole for inserting the anchor cable (3). A stopper (10) for positioning the counterweight block (7) on the anchor cable (3) is provided below the counterweight block (7), and the stopper (10) is fixedly connected to the anchor cable (3).

5. The underwater self-dumping anchor system according to claim 1, characterized in that: The above-water anchor beam (2) and the underwater anchor beam (4) are I-beam or channel steel structures.

6. The underwater self-dumping anchor system according to claim 1, characterized in that: The anchor cable (3) is a steel strand or a precision-rolled threaded steel bar.

7. The underwater self-dumping anchor system according to claim 1, characterized in that: The groove (11) is a "U"-shaped or "匚"-shaped structure.

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