Temporary supporting structure for cofferdam widening

Abstract

The utility model discloses a temporary supporting structure for cofferdam widening, which relates to the technical field of cofferdam construction, and comprises a widening assembly, the widening assembly is arranged on one side of the outer wall of a cofferdam, and the widening assembly is used for supporting a construction area for widening the cofferdam; and an anchor. The widening assembly is arranged on the outer wall of the cofferdam, the construction area range of the cofferdam is effectively increased, the anchoring part and the supporting assembly are arranged, the connection strength of the widening assembly and the cofferdam is effectively enhanced, and the stability of the widening assembly is guaranteed; and a waterproof widening space can be effectively formed outside the cofferdam by arranging the waterproof sealing strips, so that the overall waterproof performance of the widening assembly is guaranteed. And the defect that the construction area of the cofferdam cannot be increased due to the fact that the cofferdam structure is fixed in the prior art is effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of cofferdam construction, in particular to a temporary supporting structure for widening the cofferdam. Background Art

[0002] Steel sheet pile cofferdams are widely used in the construction of deepwater foundations for inland river bridges today. They are particularly suitable for hard riverbeds such as sandy soil, clay soil, gravel soil, and weathered rock, as well as deep riverbeds with high flow rates. When constructing steel sheet pile cofferdams, it is important to be familiar with the geological conditions of the construction area and to conduct underwater riverbed exploration, which increases construction costs. As part of river bridge construction, cofferdam construction serves to isolate water and ensure dry construction at the arch foot.

[0003] At present, cofferdam construction can only be carried out in the original construction area, which cannot meet special construction requirements. For example, if the cofferdam construction area is too narrow, it is impossible to increase the cofferdam construction area, making it impossible to carry out subsequent construction, resulting in delays in the overall cofferdam construction. Utility Model Content

[0004] The purpose of the utility model is to solve the disadvantage in the prior art that the cofferdam construction area cannot be increased due to the fixed cofferdam structure, and to propose a temporary supporting structure for widening the cofferdam.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A temporary support structure for widening a cofferdam, comprising:

[0007] A widening component is provided on one side of the outer wall of the cofferdam and is used to support the construction area for widening the cofferdam;

[0008] An anchor is disposed inside the cofferdam, one end of the anchor is connected to the inside of the cofferdam, and the other end of the anchor passes through the cofferdam, extends to the outside of the cofferdam, and is rotatably connected to the widening component at at least two locations;

[0009] A support assembly, one end of which is arranged on the supporting wall, and the other end of which is arranged on the widening assembly, and the support assembly is used to strengthen the connection strength between the widening assembly and the cofferdam body;

[0010] A waterproof seal is provided on the supporting assembly, the waterproof seal is located near the supporting wall, the waterproof seal is located between the widening assembly and the supporting wall, and is used to prevent external water from flowing into the interior of the widening assembly and the cofferdam.

[0011] In a feasible solution, the widening component includes:

[0012] A widening body, the widening body is triangular in shape, one side of the widening body is in contact with the supporting wall of the cofferdam, and the contact portion between the widening body and the supporting wall of the cofferdam is in contact with the waterproof seal;

[0013] Two splicing ears, the two splicing ears are arranged at the top of the joint between the supporting wall and the supporting wall of the cofferdam, and the splicing body is hingedly connected to the anchor through the two splicing ears;

[0014] a first reinforcing rod, the first reinforcing rod being arranged inside the widening body, the first reinforcing rod being arranged transversely within the widening body, and being used to strengthen the connection strength of both side walls of the widening body as a whole;

[0015] Multiple anchoring rods are arranged in parallel in the widened body, one end of the anchoring rod is connected to the first reinforcing rod, and the other end of the anchoring rod is connected to the supporting wall of the cofferdam, and the setting direction of the anchoring rod is perpendicular to the setting direction of the first reinforcing rod.

[0016] In a feasible solution, the support assembly includes:

[0017] A plurality of connecting rods, each of which is in an inverted L-shape and is arranged in parallel on the widening body, one end of each connecting rod being connected to the widening body, and the other end of each connecting rod passing through the supporting wall of the cofferdam and being fixedly connected to the cofferdam;

[0018] The second reinforcing rod is arranged inside the widening body, the second reinforcing rod is parallel to the first reinforcing rod, the second reinforcing rod is located above the multiple anchoring rods, and the second reinforcing rod is used to cooperate with the first reinforcing rod to strengthen the connection strength between the widening body and the supporting wall of the cofferdam.

[0019] In a feasible solution, the cofferdam is a double-layer structure; specifically, the cofferdam includes:

[0020] A supporting wall, wherein the supporting wall is a double-layer hollow structure;

[0021] The reinforcement member is in the shape of a steel mesh and is arranged inside the hollow structure on both sides of the supporting wall.

[0022] In a feasible solution, a plurality of reinforcing ribs are provided inside the widened body, and the plurality of reinforcing ribs are provided along the inner wall of the widened body.

[0023] In a feasible solution, the waterproof seal is a rubber water stop strip, which is used to absorb water and expand to seal the connection between the widened body and the supporting wall of the cofferdam.

[0024] The beneficial effects of the utility model are:

[0025] The utility model effectively expands the cofferdam construction area by installing a widening component on the outer wall of the cofferdam. The installation of anchors and support components effectively strengthens the connection strength between the widening component and the cofferdam, ensuring the stability of the widening component. The installation of waterproof seals effectively forms a watertight widening space outside the cofferdam, ensuring the overall watertight performance of the widening component. This effectively addresses the drawback of the existing technology that the cofferdam structure is fixed and cannot expand the cofferdam construction area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is an overall schematic diagram of a temporary support structure for widening a cofferdam provided in an embodiment of the present utility model;

[0027] Figure 2 This is a schematic top view of a temporary support structure for widening a cofferdam provided in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic plan view of a temporary support structure for widening a cofferdam provided in an embodiment of the present utility model.

[0029] The markings in the figure are as follows:

[0030] 1. Cofferdam;

[0031] 11. Support wall; 111. Anchor; 12. Reinforcement; 13. Pier; 14. Support column;

[0032] 2. Width components;

[0033] 21. Widened body; 211. Splicing ears; 22. First reinforcing rod; 23. Anchor rod; 24. Second reinforcing rod; 25. Connecting rod; 26. Waterproof seal. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] Reference Figures 1 to 3In order to solve the shortcoming in the prior art that the construction area of the cofferdam 1 cannot be increased due to the fixed structure of the cofferdam 1, the present invention provides a temporary support structure for widening the cofferdam 1. The temporary support structure is arranged on the supporting wall 11 of the cofferdam 1. The temporary support structure is connected to the supporting wall 11 of the cofferdam 1. The cofferdam 1 is arranged outside the pier body 13, and the pier body 13 is integrated by multiple pre-embedded support columns 14 to achieve widening of the construction area of the cofferdam 1. Specifically, the temporary support structure includes: a widening component 2, an anchor 111, a support component and a waterproof seal 26. The widening component 2 is arranged on one side of the outer wall of the cofferdam 1. The widening component 2 is used to support the widening of the construction area of the cofferdam 1 to meet different construction requirements. The anchor 111 is arranged inside the cofferdam 1, one end of the anchor 111 is connected to the inside of the cofferdam 1, and the other end of the anchor 111 passes through the cofferdam 1, extends to the outside of the cofferdam 1 and is rotatably connected to at least two locations on the widening component 2, so as to ensure that the widening direction and widening height of the widening component 2 can be adjusted at any time. One end of the support component is arranged on the supporting wall, and the other end of the support component is arranged on the widening component 2. The support component is used to strengthen the connection strength between the widening component 2 and the cofferdam 1 body. The waterproof seal 26 is arranged on the support component, and the waterproof seal 26 is located near the supporting wall 11. The waterproof seal 26 is located between the widening component 2 and the supporting wall 11. The waterproof seal 26 is used to prevent external water from flowing into the widening component 2 and the inside of the cofferdam 1. In this embodiment, by installing a widening assembly 2 on the outer wall of the cofferdam 1, the construction area of the cofferdam 1 is effectively expanded. The installation of anchors 111 and support assemblies effectively strengthens the connection strength between the widening assembly 2 and the cofferdam 1, ensuring the stability of the widening assembly 2. The installation of waterproof seals 26 effectively forms a watertight widening space outside the cofferdam 1, thereby ensuring the overall watertight performance of the widening assembly 2. This effectively solves the disadvantage of the prior art that the construction area of the cofferdam 1 cannot be expanded due to the fixed structure of the cofferdam 1.

[0039] In this embodiment, the widening assembly includes: a widening body 21, two splicing ears 211, a plurality of anchoring rods 23 and a first reinforcing rod 22. The widening body 21 is triangular in shape, and one side of the widening body 21 is in contact with the supporting wall 11 of the cofferdam 1. The joint between the widening body 21 and the supporting wall 11 of the cofferdam 1 is in contact with the waterproof seal 26 to ensure the water-proof ability of the widening body 21 and the supporting wall 11 of the cofferdam 1. The two splicing ears 211 are arranged at the top of the joint between the supporting wall and the supporting wall 11 of the cofferdam 1. The widening body 21 is hingedly connected to the anchor 111 through the two splicing ears 211. The first reinforcing rod 22 is arranged inside the widening body 21. The first reinforcing rod 22 is arranged horizontally inside the widening body 21. The first reinforcing rod 22 is used to strengthen the connection strength of the two side walls of the widening body 21 as a whole. Multiple anchor rods 23 are arranged in parallel in the widening body 21, one end of the anchor rod 23 is connected to the first reinforcing rod 22, and the other end of the anchor rod 23 is connected to the support wall 11 of the cofferdam 1. The setting direction of the anchor rod 23 is perpendicular to the setting direction of the first reinforcing rod 22, so that the anchor rod 23 can be used to strengthen the connection strength between the widening body 21 and the support wall 11 of the cofferdam 1.

[0040] In this embodiment, in order to ensure the water-isolating ability of the widened body 21 , a plurality of reinforcing ribs (not shown in the figure) are provided inside the widened body 21 . The plurality of reinforcing ribs are provided along the inner wall of the widened body 21 .

[0041] In this embodiment, the support assembly includes: a plurality of connecting rods 25 and a second reinforcing rod 24. The plurality of connecting rods 25 are in an inverted L-shape and are arranged in parallel on the widening body 21. One end of the connecting rod 25 is connected to the widening body 21, and the other end of the connecting rod 25 passes through the supporting wall 11 of the cofferdam 1 and is fixedly connected to the cofferdam 1, which effectively further strengthens the connection strength between the widening body 21 and the supporting wall 11 of the cofferdam 1. The second reinforcing rod 24 is arranged inside the widening body 21. The second reinforcing rod 24 is parallel to the first reinforcing rod 22 and is located above the plurality of anchoring rods 23. The second reinforcing rod 24 is used to cooperate with the first reinforcing rod 22 to strengthen the connection strength between the widening body 21 and the supporting wall 11 of the cofferdam 1.

[0042] In this embodiment, a widening component 2 can be installed on at least one side of the supporting wall 11 of the cofferdam 1 according to actual construction requirements, thereby increasing the overall construction area of the cofferdam 1 in all directions. In addition, to reduce the pressure on the supporting wall 11 of the cofferdam 1 and the waterproofing ability of the widening component 2, the widening component 2 can be selected and installed in two or more sections according to the area of the supporting wall 11 on the cofferdam 1. That is, two widening components 2 can be installed on any side of the supporting wall 11 of the cofferdam 1. The two widening components 2 are used to increase the construction area of the cofferdam 1. The installation of two widening components 2 not only reduces the difficulty of watertightening the waterproof seal 26, but also allows for rapid investigation of leaks. It can also reduce the pressure on a single area of the supporting wall 11 of the cofferdam 1.

[0043] In one feasible embodiment, the waterproof seal 26 is a rubber waterstop strip, which is used to absorb water and expand to seal the connection between the widening body 21 and the supporting wall 11 of the cofferdam 1. In this embodiment, by providing the waterproof seal 26 at the connection between the widening body 21 and the supporting wall 11 of the cofferdam 1, the waterproof seal 26 absorbs water and expands to seal the connection between the widening body 21 and the supporting wall 11 of the cofferdam 1. At the same time, the deadweight of the widening body 21 is used to squeeze the waterproof seal 26, thereby ensuring the sealing of the connection between the widening body 21 and the supporting wall 11 of the cofferdam 1.

[0044] In one feasible embodiment, to ensure the stable support of the cofferdam 1 and the temporary support structure, the cofferdam 1 is a double-layer structure, that is, the cofferdam 1 includes: the supporting wall 11 is a double-layer hollow structure, and the cofferdam 1 also includes: a reinforcement member 12. The reinforcement member 12 is in the form of a steel mesh and is disposed inside the hollow structure on both sides of the supporting wall to ensure that the reinforcement member 12 provides stable support for the supporting wall 11.

[0045] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A temporary support structure for widening a cofferdam, characterized in that: The cofferdam includes: The temporary support structure comprises: A widening component is provided on one side of the outer wall of the cofferdam and is used to support the construction area for widening the cofferdam; An anchor is disposed inside the cofferdam, one end of the anchor is connected to the inside of the cofferdam, and the other end of the anchor passes through the cofferdam, extends to the outside of the cofferdam, and is rotatably connected to the widening component at at least two locations; A support assembly, one end of which is arranged on the supporting wall, and the other end of which is arranged on the widening assembly, and the support assembly is used to strengthen the connection strength between the widening assembly and the cofferdam body; A waterproof seal is provided on the supporting assembly, the waterproof seal is located near the supporting wall, the waterproof seal is located between the widening assembly and the supporting wall, and is used to prevent external water from flowing into the interior of the widening assembly and the cofferdam.

2. A temporary support structure for widening a cofferdam according to claim 1, characterized in that: The widening component includes: A widening body, the widening body is triangular in shape, one side of the widening body is in contact with the supporting wall of the cofferdam, and the contact portion between the widening body and the supporting wall of the cofferdam is in contact with the waterproof seal; Two splicing ears, the two splicing ears are arranged at the top of the joint between the supporting wall and the supporting wall of the cofferdam, and the splicing body is hingedly connected to the anchor through the two splicing ears; a first reinforcing rod, the first reinforcing rod being arranged inside the widening body, the first reinforcing rod being arranged transversely within the widening body, and being used to strengthen the connection strength of both side walls of the widening body as a whole; Multiple anchoring rods are arranged in parallel in the widened body, one end of the anchoring rod is connected to the first reinforcing rod, and the other end of the anchoring rod is connected to the supporting wall of the cofferdam, and the setting direction of the anchoring rod is perpendicular to the setting direction of the first reinforcing rod.

3. A temporary support structure for widening a cofferdam according to claim 2, characterized in that: The support assembly comprises: A plurality of connecting rods, each of which is in an inverted L-shape and is arranged in parallel on the widening body, one end of each connecting rod being connected to the widening body, and the other end of each connecting rod passing through the supporting wall of the cofferdam and being fixedly connected to the cofferdam; The second reinforcing rod is arranged inside the widening body, the second reinforcing rod is parallel to the first reinforcing rod, the second reinforcing rod is located above the multiple anchoring rods, and the second reinforcing rod is used to cooperate with the first reinforcing rod to strengthen the connection strength between the widening body and the supporting wall of the cofferdam.

4. A temporary support structure for widening a cofferdam according to claim 1, characterized in that: The cofferdam is a double-layer structure; specifically, the supporting wall is a double-layer hollow structure; The reinforcement member is in the shape of a steel mesh and is arranged inside the hollow structure on both sides of the supporting wall.

5. A temporary support structure for widening a cofferdam according to claim 2, characterized in that: A plurality of reinforcing ribs are arranged inside the widened body, and the plurality of reinforcing ribs are arranged along the inner wall of the widened body.

6. A temporary support structure for widening a cofferdam according to claim 1, characterized in that: The waterproof seal is a rubber water stop strip, which is used to absorb water and expand to seal the connection between the widened body and the supporting wall of the cofferdam.

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