Permanent supporting structure for cofferdam widening

Abstract

The utility model discloses a permanent supporting structure for cofferdam widening, which relates to the technical field of cofferdam construction and comprises a triangular widening body. An anchoring assembly; and a plurality of anchoring rods. The upper portion of the widening body is connected with the cofferdam body in a supporting mode through the anchoring assembly, the lower portion of the widening body is connected with the pier body in a supporting mode through the anchoring rods, stability of the widening body and the widening construction area is guaranteed, meanwhile, the waterproof sealing strip is arranged at the attaching position of the widening body and the cofferdam, and the waterproof sealing strip is not prone to deformation. Water is prevented from entering the widening body and the cofferdam, the actual widening requirement is effectively met, in other words, the structure does not need to be supported by too many complex structures, the stability of the widening position of the cofferdam can be guaranteed, and the actual construction requirement can be met. The defects that in the prior art, an adopted supporting and widening structure is complex in overall structure and prone to occupying the widening position are overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of cofferdam construction, in particular to a permanent 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] Currently, when a cofferdam construction area becomes too narrow, the method of increasing the cofferdam construction area generally involves adding supports and widening the structure outside the cofferdam. However, this widening support method is easily destroyed during heavy rainfall or flood season, making it impossible to ensure the stability of the support in the widened area of ​​the cofferdam. In addition, the current support and widening structure is complex and easily takes up the widening space. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the support and widening structure currently used in the prior art, such as the overall structure being complex and easily occupying the widening position, and to propose a permanent support structure for widening the cofferdam.

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

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

[0007] A widening body, wherein the widening body is triangular in shape, one side of the widening body is fitted to the supporting wall of the cofferdam, and the triangular interior of the widening body is fitted to the interior of the cofferdam;

[0008] An anchoring assembly, one end of which is arranged inside the cofferdam, and the other end of which is arranged above the joint between the widening body and the cofferdam and is hingedly connected to support the upper part of the widening body and the cofferdam itself;

[0009] A plurality of anchor rods, wherein the plurality of anchor rods are arranged parallel to each other in the cofferdam, one end of the anchor rod is connected to the widening body, and the other end of the anchor rod is connected to the pier body, and the plurality of anchor rods are located below the anchoring assembly;

[0010] A waterproof seal is provided on the widening body and is located at the joint with the cofferdam to prevent water from entering the interior of the widening body and the cofferdam.

[0011] In a feasible solution, the anchoring assembly includes:

[0012] Two anchors, the two anchors are symmetrically arranged on the cofferdam, one end of the anchor is connected to the cofferdam, and the other end of the anchor extends to the position where the widened body is attached to the cofferdam;

[0013] Two connecting ears are symmetrically arranged on the widening body, and the two connecting ears are respectively connected to the two anchoring pieces. The widening body is hingedly connected to the two anchoring pieces through the two connecting ears.

[0014] In a feasible solution, the anchoring assembly further includes:

[0015] A plurality of connecting rods are in an inverted L shape and are arranged in parallel on the widening body. One end of the connecting rod is connected to the widening body, and the other end of the connecting rod is fixedly connected to the cofferdam.

[0016] In a feasible solution, the anchor rod and the pier body are cast in one piece.

[0017] 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.

[0018] 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.

[0019] The beneficial effects of the utility model are:

[0020] The present invention supports and connects the upper portion of the widening body to the cofferdam itself through anchoring assemblies, and supports and connects the lower portion of the widening body to the bridge pier body through multiple anchor rods, thereby ensuring the stability of the widening body and the widening construction area. Furthermore, waterproof seals are provided at the joints between the widening body and the cofferdam to prevent water from entering the interior of the widening body and the cofferdam, effectively meeting actual widening requirements. This structure does not require overly complex support structures, yet can ensure the stability of the cofferdam widening position and meet actual construction requirements. This also addresses the shortcomings of the existing support and widening structures, which are complex overall structures and easily occupy the widening position. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall use of a permanent support structure for widening a cofferdam provided in an embodiment of the present utility model;

[0022] Figure 2This is a schematic diagram of a permanent support structure for widening a cofferdam provided in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic plan view of a permanent support structure for widening a cofferdam provided in an embodiment of the present utility model.

[0024] The markings in the figure are as follows:

[0025] 1. Cofferdam;

[0026] 11. Support wall; 111. Anchor; 12. Reinforcement steel bar; 13. Pier body; 14. Support column;

[0027] 2. Assemble the widened body; 21. Connecting ears; 211. Reinforcement ribs; 212. Anchor rods; 22. Connecting pull rods; 23. Waterproof seals. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] Reference Figures 1 to 3 In order to solve the shortcomings of the existing support and widening structure currently used in the prior art, which is complex in overall structure and easy to occupy the widening position, the present invention provides a permanent support structure for widening the cofferdam 1. The permanent support structure is arranged on the supporting wall 11 of the cofferdam 1. The permanent support structure is connected to the supporting wall 11 of the cofferdam 1 and extends to the pier body 13 inside the cofferdam 1. The cofferdam 1 is arranged outside the pier body 13, and the pier body 13 is integrated by a plurality of pre-buried support columns 14 to strengthen the connection strength between the construction area of ​​the widened cofferdam 1 and the cofferdam 1 and the pier body 13 itself. Figure 1 and Figure 2In this embodiment, in order to reduce the impact of the supporting wall 11 at the joint of the widening body 2 and the cofferdam 1 on the construction area of ​​the cofferdam 1, the upper supporting wall 11 of the cofferdam 1 at this location can be partially cut. Specifically, the permanent support structure includes: a widening body 2, a plurality of anchor rods 212, an anchoring assembly and a waterproof seal 23. The widening body 2 is triangular in shape, one side of the widening body 2 is fitted to the cut portion of the supporting wall 11 of the cofferdam 1, and the triangular interior of the widening body 2 is fitted to the interior of the cofferdam 1. One end of the anchoring assembly is arranged inside the cofferdam 1, and the other end of the anchoring assembly is arranged and hingedly connected above the joint of the widening body 2 and the cofferdam 1, so as to realize the support connection between the upper part of the widening body 2 and the cofferdam 1 itself, and also facilitate the adjustment of the fitting position of the widening body 2 and the upper supporting wall 11 of the cofferdam 1. Multiple anchor rods 212 are arranged parallel to each other within the cofferdam 1. One end of each anchor rod 212 is connected to the widening body 2, and the other end is connected to the pier body 13. These anchor rods 212 are located below the anchor assembly to support and connect the lower portion of the widening body 2 to the pier body. Waterproof seals 23 are installed on the widening body 2 at the joint with the cofferdam 1 to prevent water from entering the widening body 2 and the cofferdam 1. In this embodiment, the upper portion of the widening body 2 is supported and connected to the cofferdam 1 itself through an anchoring assembly, and the lower portion of the widening body 2 is supported and connected to the pier body 13 through multiple anchor rods 212, thereby ensuring the stability of the widening body 2 and the widening construction area. At the same time, waterproof seals 23 are provided at the joints between the widening body 2 and the cofferdam 1 to prevent water from entering the widening body 2 and the interior of the cofferdam 1, effectively meeting the actual widening requirements. In other words, this structure does not require overly complex structures for support, yet can still ensure the stability of the widened position of the cofferdam 1 and meet actual construction requirements. This also solves the shortcomings of the existing support and widening structures currently used, such as the overall complexity and the tendency to occupy the widening position.

[0033] In this embodiment, the anchoring assembly includes two anchors 111 and two connecting ears 21. The two anchors 111 are symmetrically arranged on the cofferdam 1, with one end of each anchor 111 connected to the cofferdam 1 and the other end extending to the point where the widening body 2 abuts the cofferdam 1. The two connecting ears 21 are symmetrically arranged on the widening body 2, each connected to the two anchors 111. The widening body 2 is hingedly connected to the two anchors 111 via the two connecting ears 21, thereby supporting and connecting the upper portion of the widening body 2 to the cofferdam 1 itself through the anchoring assembly.

[0034] In this embodiment, in order to further strengthen the supporting connection stability between the lower part of the widening body 2 and the cofferdam 1, the anchoring assembly also includes: a plurality of connecting rods 22, a plurality of the connecting rods 22 are in an inverted L shape, and a plurality of the connecting rods 22 are arranged in parallel on the widening body 2, one end of the connecting rod 22 is connected to the widening body 2, and the other end of the connecting rod 22 is fixedly connected to the cofferdam 1, which effectively further strengthens the connection strength between the widening body 2 and the cofferdam 1.

[0035] In this embodiment, in order to ensure the connection strength between the anchor rod 212 and the pier body 13, the anchor rod 212 and the pier body 13 are integrally cast. Preferably, the anchor rod 212 and the pier body 13 are integrally cast with concrete.

[0036] In this embodiment, in order to ensure the water-isolating capability of the widened body 2 , a plurality of reinforcing ribs 211 are provided inside the widened body 2 . The plurality of reinforcing ribs 211 are provided along the inner wall of the widened body 2 .

[0037] In this embodiment, a widening body 2 can be provided 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. Furthermore, to reduce the pressure on the supporting wall 11 of the cofferdam 1 and the waterproofing capability of the widening body 2, the widening body 2 can be provided in two or more configurations depending on the area of ​​the supporting wall 11 of the cofferdam 1. That is, two widening bodies 2 can be provided on any side of the supporting wall 11 of the cofferdam 1. The two widening bodies 2 are used to increase the construction area of ​​the cofferdam 1. The provision of two widening bodies 2 not only reduces the difficulty of watertightening the waterproof seal 23 but also allows for rapid investigation of leaks. The pressure on a single area of ​​the supporting wall 11 of the cofferdam 1 can also be reduced.

[0038] In one feasible embodiment, the waterproof seal 23 is a rubber waterstop strip, which is used to absorb water and expand to seal the connection between the widening body 2 and the supporting wall 11 of the cofferdam 1. In this embodiment, by providing the waterproof seal 23 at the connection between the widening body 2 and the supporting wall 11 of the cofferdam 1, the waterproof seal 23 is allowed to absorb water and expand to seal the connection between the widening body 2 and the supporting wall 11 of the cofferdam 1. At the same time, the deadweight of the widening body 2 is used to squeeze the waterproof seal 23, thereby ensuring the sealing of the connection between the widening body 2 and the supporting wall 11 of the cofferdam 1.

[0039] In one feasible embodiment, to ensure the stability of the cofferdam 1 and the temporary support structure, the cofferdam 1 is a double-layer structure, that is, the cofferdam 1 includes: the support wall 11 is a double-layer hollow structure, and the cofferdam 1 also includes: reinforcing steel bars 12. The reinforcing steel bars 12 are in the form of a steel mesh and are arranged inside the hollow structures on both sides of the support wall 11 to ensure that the reinforcing steel bars 12 provide stable support for the support wall 11.

[0040] 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 permanent support structure for widening a cofferdam, characterized in that: include: A widening body, wherein the widening body is triangular in shape, one side of the widening body is fitted to the supporting wall of the cofferdam, and the triangular interior of the widening body is fitted to the interior of the cofferdam; An anchoring assembly, one end of which is arranged inside the cofferdam, and the other end of which is arranged above the joint between the widening body and the cofferdam and is hingedly connected to support the upper part of the widening body and the cofferdam itself; A plurality of anchor rods, each of which is arranged parallel to each other in the cofferdam, one end of each anchor rod being connected to the widening body, and the other end of each anchor rod being connected to the pier body inside the cofferdam, and the plurality of anchor rods being located below the anchoring assembly; A waterproof seal is provided on the widening body and is located at the joint with the cofferdam to prevent water from entering the interior of the widening body and the cofferdam.

2. A permanent support structure for widening a cofferdam according to claim 1, characterized in that: The anchoring assembly comprises: Two anchors, the two anchors are symmetrically arranged on the cofferdam, one end of the anchor is connected to the cofferdam, and the other end of the anchor extends to the position where the widened body is attached to the cofferdam; Two connecting ears are symmetrically arranged on the widening body, and the two connecting ears are respectively connected to the two anchoring pieces. The widening body is hingedly connected to the two anchoring pieces through the two connecting ears.

3. A permanent support structure for widening a cofferdam according to claim 2, characterized in that: The anchoring assembly further comprises: A plurality of connecting rods are in an inverted L shape and are arranged in parallel on the widening body. One end of the connecting rod is connected to the widening body, and the other end of the connecting rod is fixedly connected to the cofferdam.

4. A permanent support structure for widening a cofferdam according to claim 1, characterized in that: The anchor rod and the pier body are cast in one piece.

5. A permanent support structure for widening a cofferdam according to claim 1, 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 permanent 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 widening body and the supporting wall of the cofferdam.

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