Wall protection structure of cofferdam and cofferdam

Abstract

The utility model discloses a retaining wall structure of a cofferdam and the cofferdam, and belongs to the technical field of river channel engineering construction.The retaining wall structure of the cofferdam comprises a protective plate assembly and a connecting frame, the protective plate assembly comprises an inner-layer protective plate and an outer-layer protective plate, and the inner-layer protective plate and the outer-layer protective plate are arranged at intervals; a through drainage channel is formed between the inner-layer protective plate and the outer-layer protective plate, and water can pass through the drainage channel; the connecting frame is arranged between the inner-layer protective plate and the outer-layer protective plate, the two ends of the connecting frame are connected with the inner-layer protective plate and the outer-layer protective plate correspondingly, the connecting frame is provided with the first water passing hole communicating with the drainage channel, the water passing capacity of the wall protecting structure of the cofferdam can be improved, and pollution caused by backfill materials to a river is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of river engineering construction, in particular to a cofferdam wall protection structure and the cofferdam. Background Art

[0002] Steel sheet pile cofferdams are widely used in island construction in rivers. In order to increase the bearing capacity of the cofferdam, double-layer steel sheet piles are generally used as retaining walls. The double-layer steel sheet piles are welded together and stabilizing materials are backfilled between the double-layer steel sheet piles.

[0003] In the related art, for narrower river channels, traditional steel sheet pile cofferdams occupy a large water flow area of ​​the river channel, resulting in insufficient flood discharge capacity during the flood season, and the backfill material between the double-layer steel sheet piles will cause pollution to the river. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a cofferdam wall protection structure that is conducive to improving the water flow capacity of the cofferdam wall protection structure and preventing backfill materials from polluting the river.

[0005] The utility model also provides a cofferdam.

[0006] According to the first aspect of the embodiment of the present invention, the wall protection structure of the cofferdam includes: a guard plate assembly, including an inner guard plate and an outer guard plate, the inner guard plate and the outer guard plate are arranged at intervals, and a through drainage channel is constructed between the inner guard plate and the outer guard plate, and the drainage channel can allow water to flow through; a connecting frame, which is arranged between the inner guard plate and the outer guard plate, and the two ends of the connecting frame are respectively connected to the inner guard plate and the outer guard plate, and the connecting frame is provided with a first water hole connected to the drainage channel.

[0007] The wall protection structure of the cofferdam according to the embodiment of the present invention has at least the following beneficial effects: the guard plate assembly also includes an inner guard plate and an outer guard plate, a connecting frame is arranged between the inner guard plate and the outer guard plate, and the two ends of the connecting frame are respectively connected to the inner guard plate and the outer guard plate to fix the relative position of the inner guard plate and the outer guard plate, which is beneficial to improving the bearing capacity of the wall protection structure of the cofferdam. The wall protection structure of the cofferdam constructs a through drainage channel between the inner guard plate and the outer guard plate, and the drainage channel can allow water to flow through. The wall protection structure of the cofferdam can be used in narrower rivers. The drainage channel constructed between the inner and outer protective plates can effectively improve the water-passing capacity of the wall structure of the cofferdam, reduce the obstruction of the wall structure of the cofferdam to the water flow, and improve the flood discharge capacity of the river during the flood season. The use of a connecting frame instead of backfill stabilizing materials is conducive to avoiding the pollution of the river caused by the backfill materials. The connecting frame is provided with a first water hole connected to the drainage channel. The setting of the first water hole is conducive to enhancing the water-passing capacity of the wall structure of the cofferdam. The wall structure of the cofferdam can be applied to the construction fields of bridge pile foundations, abutments, pier cofferdams, etc.

[0008] According to some embodiments of the present invention, the outer protective plate is provided with a second water hole connected to the drainage channel.

[0009] Specifically, the outer protective plate is provided with a second water hole connected to the drainage channel, so that water can flow through the second water hole in and out of the drainage channel. The setting of the second water hole can enhance the water flow capacity of the drainage channel, effectively improve the water flow capacity of the wall protection structure of the cofferdam, reduce the obstruction to the water flow, and improve the flood discharge capacity of the river during the flood season.

[0010] According to some embodiments of the present invention, the wall protection structure of the cofferdam also includes two connecting parts, each of which has a sliding groove with an opening facing downward, which is engaged with the upper end of the inner protective plate or the upper end of the outer protective plate, and the two ends of the connecting frame are respectively fixedly connected to the two connecting parts.

[0011] Specifically, the wall protection structure of the cofferdam also includes two connecting parts, which have a sliding groove with an opening facing downward. The user can engage the sliding groove with the upper end of the inner guard plate or the upper end of the outer guard plate to hang the connecting part on the upper end of the inner guard plate or the outer guard plate. Through the relative sliding of the inner guard plate or the outer guard plate in the sliding groove, the connection position of the connecting part and the inner guard plate or the outer guard plate can be conveniently adjusted. The two ends of the connecting frame are respectively fixedly connected to the two connecting parts, that is, the connecting frame is connected to the inner guard plate or the outer guard plate through the connecting part. Compared with direct welding, the wall protection structure of the cofferdam is assembled to realize the connection between the connecting frame and the inner guard plate or the outer guard plate, which is conducive to reducing the amount of on-site electric welding work, is more convenient to assemble and disassemble, and the materials can be reused. Moreover, through the sliding of the inner guard plate or the outer guard plate in the sliding groove, it is conducive to avoiding the problem of inability to dock due to insufficient punching accuracy.

[0012] According to some embodiments of the present invention, the wall protection structure of the cofferdam also includes a first fastener and two waterproof gaskets, the connecting piece is connected to the first fastener and the two waterproof gaskets, the inner protective plate and the outer protective plate are both provided with a first perforation, the connecting piece is provided with a second perforation, and the first fastener is passed through a waterproof gasket, the first perforation, the second perforation and another waterproof gasket to fix the connecting piece and the inner protective plate or the outer protective plate.

[0013] Specifically, the wall protection structure of the cofferdam also includes a first fastener and two waterproof gaskets. The connecting piece is connected to the first fastener and the two waterproof gaskets. The first fastener is passed through a waterproof gasket, a first perforation, a second perforation and another waterproof gasket. That is, the wall protection structure of the cofferdam is connected in an assembled manner to achieve a fixed connection between the connecting piece and the inner protective plate or the outer protective plate. Compared with direct welding, the wall protection structure of the cofferdam is connected in an assembled manner to achieve the connection between the connecting frame and the inner protective plate or the outer protective plate, which can reduce the amount of on-site welding work, is more convenient to assemble and disassemble, and the materials are reusable. The setting of the waterproof gasket is conducive to reducing the erosion of the first fastener, the first perforation or the second perforation by water flow, and is conducive to improving the connection stability between the connecting piece and the inner protective plate or the outer protective plate.

[0014] According to some embodiments of the present invention, the connecting member includes a first bracket and two second brackets, the first bracket is provided with a slide groove, the two second brackets are connected to the same end of the first bracket, the two second brackets are arranged up and down and are both located in the drainage channel, and the two second brackets are respectively connected to the upper end and the lower end of the connecting frame.

[0015] Specifically, the connecting member includes a first bracket and two second brackets, the two second brackets are connected to the same end of the first bracket, the two second brackets are arranged up and down and are both located in the drainage channel, the two second brackets are respectively connected to the upper and lower ends of the connecting frame, and the upper and lower ends of the connecting frame are abutted against the two second brackets to achieve the limitation of the connecting frame in the upper and lower directions, which is conducive to fixing the relative position relationship between the connecting frame and the connecting member.

[0016] According to some embodiments of the present invention, a second fastener is connected to the junction of the second bracket and the connecting frame, the second bracket is provided with a third through-hole, the connecting frame is provided with a fourth through-hole opposite to the third through-hole, and the second fastener is passed through the third through-hole and the fourth through-hole to fix the connecting frame and the connecting member.

[0017] Specifically, a second fastener is connected to the junction of the second bracket and the connecting frame, the second bracket is provided with a third through-hole, the connecting frame is provided with a fourth through-hole opposite to the third through-hole, and the second fastener is passed through the third through-hole and the fourth through-hole to fix the connecting frame and the connecting member. Compared with direct welding, the wall protection structure of the cofferdam adopts an assembly method to realize the connection between the connecting frame and the connecting member, making the assembly and disassembly of the connecting frame and the connecting member more convenient, the materials can be reused, and the workload of on-site electric welding is reduced.

[0018] According to some embodiments of the present invention, the third perforation is a strip-shaped hole, and the length direction of the strip-shaped hole extends from one of the inner protective plate and the outer protective plate to the other.

[0019] Specifically, the third perforation is a strip hole, the length direction of the strip hole extends from one of the inner protective plate and the outer protective plate to the other, and the second fastener is passed through the strip hole. By adjusting the position of the second fastener in the strip hole, it can be ensured that the two ends of the connecting frame are respectively connected to the two connecting members to compensate for processing and dimensional errors or improve the applicability of the connecting frame.

[0020] According to some embodiments of the present invention, a plurality of connecting frames are provided, and the plurality of connecting frames are arranged in an array along the length direction of the drainage channel.

[0021] A plurality of connecting frames are provided, and the plurality of connecting frames are arranged along the length direction of the drainage channel. The connection of the plurality of connecting frames is used to improve the connection stability between the inner layer guard plate and the outer layer guard plate, thereby ensuring the normal operation of the drainage channel.

[0022] According to some embodiments of the present invention, the wall protection structure of the cofferdam also includes a guardrail and a scaffolding, the scaffolding is connected to the upper ends of the inner and outer guard plates, and the guardrail is connected to the upper end of the scaffolding and is arranged around the outer edge of the scaffolding.

[0023] The scaffolding is erected on the upper ends of the inner and outer guard plates, which can support the scaffolding. The guardrail is connected to the upper end of the scaffolding and is arranged around the outer edge of the scaffolding. The scaffolding and guardrail together define a working platform for workers to walk on, so as to assist workers in carrying out river engineering construction operations. The guardrail can effectively protect the personal safety of workers.

[0024] The cofferdam according to the embodiment of the second aspect of the present invention includes the protective wall structure of the cofferdam as shown in the first aspect.

[0025] The cofferdam according to the embodiment of the present invention has at least the following beneficial effects: the cofferdam includes the wall protection structure of the cofferdam shown in the first aspect, the guard plate assembly also includes an inner guard plate and an outer guard plate, a connecting frame is set between the inner guard plate and the outer guard plate, and the two ends of the connecting frame are respectively connected to the inner guard plate and the outer guard plate to fix the relative position of the inner guard plate and the outer guard plate, which is beneficial to improve the bearing capacity of the wall protection structure of the cofferdam, the wall protection structure of the cofferdam constructs a through drainage channel between the inner guard plate and the outer guard plate, the drainage channel can allow water to flow through, and the wall protection structure of the cofferdam can be applied to When used in narrower river channels, the drainage channel constructed between the inner and outer protective plates can effectively improve the water-passing capacity of the wall structure of the cofferdam, reduce the obstruction of the wall structure of the cofferdam to the water flow, and improve the flood discharge capacity of the river during the flood season. The use of a connecting frame instead of backfill stabilizing materials is conducive to avoiding pollution of the river caused by the backfill materials. The connecting frame is provided with a first water hole connected to the drainage channel. The setting of the first water hole is conducive to enhancing the water-passing capacity of the wall structure of the cofferdam. The wall structure of the cofferdam can be applied to construction fields such as bridge pile foundations, abutments, and pier cofferdams.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 This is a schematic structural diagram of a wall protection structure of a cofferdam according to an embodiment of the present invention;

[0029] Figure 2 A schematic structural diagram of a wall protection structure of a cofferdam according to an embodiment of the present invention from another perspective;

[0030] Figure 3 for Figure 1 A top view of the retaining wall structure of the cofferdam shown in FIG;

[0031] Figure 4 A cross-sectional view of a retaining wall structure of a cofferdam according to an embodiment of the present invention;

[0032] Figure 5 for Figure 1 A partial enlarged view of the retaining wall structure of the cofferdam shown in FIG.

[0033] Figure 6 for Figure 4 A partial enlarged view of location B of the retaining wall structure of the cofferdam shown in FIG.

[0034] Figure 7This is a structural schematic diagram of a connecting piece of a cofferdam's wall protection structure according to an embodiment of the present utility model.

[0035] Figure Number:

[0036] 110, inner protective plate; 120, outer protective plate; 130, drainage channel; 140, first perforation;

[0037] 200, connecting frame; 210, first water hole; 220, fourth through hole;

[0038] 300, connecting member; 310, first bracket; 311, slide groove; 312, second through-hole; 320, second bracket; 321, third through-hole;

[0039] 410, first fastener; 420, second fastener. DETAILED DESCRIPTION

[0040] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0042] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0043] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0044] Reference Figures 1 to 7 As shown, the wall protection structure of the cofferdam according to an embodiment of the present invention includes: a guard plate assembly and a connecting frame 200.

[0045] Reference Figure 1 、 Figure 2 and Figure 3As shown, the guard plate assembly includes an inner guard plate 110 and an outer guard plate 120, the inner guard plate 110 and the outer guard plate 120 are arranged at intervals, and a through drainage channel 130 is constructed between the inner guard plate 110 and the outer guard plate 120, and the drainage channel 130 can allow water to flow through.

[0046] The following description will be made by taking the example that the outer layer guard plate 120 and the inner layer guard plate 110 are arranged at intervals in the left and right directions, the width direction of the drainage channel 130 is the left and right direction, and the length direction of the drainage channel 130 is the front and back direction.

[0047] Reference Figure 1 、 Figure 2 and Figure 3 As shown, the connecting frame 200 is arranged between the inner guard plate 110 and the outer guard plate 120, and the two ends of the connecting frame 200 are respectively connected to the inner guard plate 110 and the outer guard plate 120 to fix the relative position of the inner guard plate 110 and the outer guard plate 120, which is beneficial to improve the bearing capacity of the wall structure of the cofferdam.

[0048] Reference Figure 1 、 Figure 2 and Figure 3 As shown, the wall structure of the cofferdam constructs a through drainage channel 130 between the inner protective plate 110 and the outer protective plate 120, and the drainage channel 130 can allow water to flow through. The wall structure of the cofferdam can be used in narrower rivers. The drainage channel 130 constructed between the inner protective plate 110 and the outer protective plate 120 can effectively improve the water-passing capacity of the wall structure of the cofferdam, reduce the obstruction of the wall structure of the cofferdam to the water flow, and can improve the flood discharge capacity of the river during the flood season.

[0049] Traditional steel sheet pile cofferdams cannot pass water in the retaining wall composed of two layers of steel sheet piles, or have a significant obstruction to water flow. As a result, when traditional steel sheet pile cofferdams are applied to narrower rivers, they seriously obstruct water flow. During flood season, due to insufficient drainage capacity, water levels are easily raised, posing a safety hazard to crops or residents on both sides of the river.

[0050] The wall protection structure of the cofferdam provided in the embodiment of the present invention adopts a connection method of a connecting frame 200 to replace the backfill stabilizing material, which is beneficial to avoiding the pollution of the river caused by the backfill material. The connecting frame 200 is provided with a first water hole 210 connected to the drainage channel 130. The setting of the first water hole 210 is beneficial to enhancing the water-passing capacity of the wall protection structure of the cofferdam. The wall protection structure of the cofferdam can be applied to construction fields such as bridge pile foundations, abutments, pier cofferdams, etc.

[0051] Reference Figure 1 、 Figure 2 and Figure 3As shown, for the cofferdam using the protective wall structure of the cofferdam, the extension direction of the drainage channel 130 can be set according to the flow direction of the river, so that the extension direction of the drainage channel 130 is the same as the water flow direction of the river, so as to improve the water-passing capacity of the cofferdam and improve the flood discharge capacity of the river during the flood season.

[0052] Reference Figure 1 、 Figure 2 and Figure 3 Specifically, the connecting frame 200 can be a shaped Bailey sheet, which not only provides a stable connection between the inner and outer protective plates 110 and 120, but also forms a plurality of hollowed-out first water holes 210 on the connecting frame 200 to improve the water flow capacity of the cofferdam's retaining wall structure. The inner and outer protective plates 110 and 120 can be constructed of steel sheet piles to enhance the overall stability of the cofferdam's retaining wall structure.

[0053] It can be understood that, specifically, the outer protective plate 120 is provided with a second water hole connected to the drainage channel 130, so that water can flow through the second water hole in and out of the drainage channel 130. The setting of the second water hole is conducive to improving the water flow capacity of the drainage channel 130, can effectively improve the water flow capacity of the wall protection structure of the cofferdam, and can improve the flood discharge capacity of the river during the flood season.

[0054] Specifically, the inner protective plate 110 is made of a waterproof sealed material to ensure that a construction space is formed inside the cofferdam and reduce the interference of water flow on construction operations in the construction space. The construction space can be used for construction operations such as bridge pile foundations, abutments, pier cofferdams, etc.

[0055] It is understandable that a plurality of connecting frames 200 are provided, and the plurality of connecting frames 200 are arranged along the length direction of the drainage channel 130, that is, the plurality of connecting frames 200 are arranged at intervals in front and back. Through the connection of the plurality of connecting frames 200, the connection stability between the inner protective plate 110 and the outer protective plate 120 is improved to ensure the normal operation of the drainage channel 130.

[0056] Specifically, the cofferdam's wall structure further includes a plurality of connectors 300, with each connector frame 200 being connected to two connectors 300. The connectors 300 have downwardly opening chutes 311, which are connected to the upper end of the inner guard plate 110 or the upper end of the outer guard plate 120. The two ends of the connector frame 200 are fixedly connected to the two connectors 300, respectively.

[0057] The user can engage the slide groove 311 with the upper end of the inner guard plate 110 or the upper end of the outer guard plate 120, and the upper end of the slide groove 311 can abut against the upper end of the inner guard plate 110 or the outer guard plate 120 to hang the connecting piece 300 on the upper end of the inner guard plate 110 or the outer guard plate 120. By sliding the inner guard plate 110 or the outer guard plate 120 in the slide groove 311, the connection position of the connecting piece 300 and the inner guard plate 110 or the outer guard plate 120 can be easily adjusted. The two ends of the connecting frame 200 are respectively fixedly connected to the two connecting pieces 300, that is, the connecting frame 200 is connected to the inner guard plate 110 or the outer guard plate 120 through the connecting piece 300.

[0058] Compared with direct welding, the wall protection structure of the cofferdam realizes the connection between the connecting frame 200 and the inner protective plate 110 or the outer protective plate 120 through the connecting piece 300, which is beneficial to reducing the amount of on-site welding work, is more convenient to assemble and disassemble, and the materials can be reused. In addition, the sliding of the inner protective plate 110 or the outer protective plate 120 in the slide groove 311 is beneficial to avoid the problem of insufficient punching accuracy causing the connecting piece 300 to be unable to dock with the inner protective plate 110 or the outer protective plate 120.

[0059] Reference Figure 1 、 Figure 4 and Figure 6 As shown, it can be understood that the wall protection structure of the cofferdam further includes a first fastener 410 and a waterproof gasket, and each connecting member 300 is connected to a second fastener 420 and two waterproof gaskets.

[0060] Reference Figure 1 、 Figure 4 and Figure 6 As shown, the inner protective plate 110 and the outer protective plate 120 are both provided with a first through-hole 140, the connecting member 300 is provided with a second through-hole 312, and the first fastener 410 is passed through a waterproof gasket, the first through-hole 140, the second through-hole 312 and another waterproof gasket to fix the connecting member 300 and the inner protective plate 110 or the outer protective plate 120, and a stable connection between the connecting member 300 and the inner protective plate 110 or the outer protective plate 120 is achieved through the connection of the first fastener 410 and the abutment of the upper end of the slide groove 311 with the inner protective plate 110 or the outer protective plate 120.

[0061] Reference Figure 4 、 Figure 6 and Figure 7As shown, the wall structure of the cofferdam is connected by an assembled connection method to achieve a fixed connection between the connector 300 and the inner protective plate 110 or the outer protective plate 120. Compared with direct welding, it is beneficial to reduce the amount of on-site welding work, is more convenient to assemble and disassemble, and the material can be reused. The provision of the waterproof gasket is beneficial to reduce the erosion of the first fastener 410, the first perforation 140 or the second perforation 312 by the water flow, and is beneficial to improve the connection stability between the connector 300 and the inner protective plate 110 or the outer protective plate 120.

[0062] Reference Figure 4 、 Figure 6 and Figure 7 As shown, specifically, the first fastener 410 includes a first bolt and a first nut. The first bolt passes through a waterproof gasket, a first through-hole 140, a second through-hole 312 and another waterproof gasket and is threadedly connected to the first nut. By screwing the first bolt and the first nut together, a clamping force can be applied to the two waterproof gaskets, and the connector 300 and the inner protective plate 110 or the outer protective plate 120 to close each other, so as to achieve the fixation of the connector 300 and the connecting frame 200 and improve the connection stability of the connector 300 and the connecting frame 200.

[0063] Reference Figure 1 、 Figure 4 and Figure 7 As shown, it can be understood that, specifically, the connecting member 300 includes a first bracket 310 and two second brackets 320, the two second brackets 320 are connected to the same end of the first bracket 310, the two second brackets 320 are arranged up and down and are both located in the drainage channel 130, the two second brackets 320 are respectively connected to the upper and lower ends of the connecting frame 200, and the upper and lower ends of the connecting frame 200 are abutted against the two second brackets 320 to achieve the limitation of the connecting frame 200 in the upper and lower directions, which is conducive to fixing the relative position relationship between the connecting frame 200 and the connecting member 300.

[0064] Reference Figure 1 、 Figure 4 and Figure 7 As shown, the example of the outer protective plate 120 and the inner protective plate 110 being arranged with a left-right spacing is used for explanation. One connector 300 is connected to the outer protective plate 120. In the outer connector 300, two second brackets 320 are connected to the right end of the first bracket 310, so that the two second brackets 320 are located inside the drainage channel 130 and a stable connection between the second brackets 320 and the connecting frame 200 is achieved. Another connector 300 is connected to the inner protective plate 110. In the inner connector 300, two second brackets 320 are connected to the left end of the first bracket 310, so that the two second brackets 320 are located inside the drainage channel 130 and a stable connection between the second brackets 320 and the connecting frame 200 is achieved.

[0065] Reference Figure 1 、 Figure 5 and Figure 7 As shown, it can be understood that the second bracket 320 and the connecting frame 200 are connected with a second fastener 420, the second bracket 320 is provided with a third through-hole 321, the connecting frame 200 is provided with a fourth through-hole 220 opposite to the third through-hole 321, and the second fastener 420 is passed through the third through-hole 321 and the fourth through-hole 220 to fix the connecting frame 200 and the connecting member 300.

[0066] Reference Figure 1 、 Figure 5 and Figure 7 As shown, compared with direct welding, the wall protection structure of the cofferdam adopts an assembly method to achieve the connection between the connecting frame 200 and the connecting piece 300, making the assembly and disassembly of the connecting frame 200 and the connecting piece 300 more convenient, the materials can be reused, and the workload of on-site electric welding is reduced.

[0067] Reference Figure 1 、 Figure 5 and Figure 7 As shown, specifically, the second fastener 420 includes a second bolt and a second nut. The second bolt passes through the third through-hole 321 and the fourth through-hole 220 and is threadedly connected to the second nut. By screwing the second bolt and the second nut together, a clamping force is applied to the connecting frame 200 and the second bracket 320 to bring them close to each other, so as to fix the connecting frame 200 and the second bracket 320, thereby realizing a detachable connection between the connecting frame 200 and the connecting member 300.

[0068] Specifically, in the connecting member 300, the distance between the two second brackets 320 is greater than the height of the connecting frame 200 to ensure that the connecting frame 200 can be placed between the two second brackets 320. By screwing the second bolt and the second nut together, a clamping force is applied to the connecting frame 200 and the second bracket 320 to bring them close to each other, so as to fix the connecting frame 200 and the second bracket 320, thereby realizing a detachable connection between the connecting frame 200 and the connecting member 300.

[0069] Reference Figure 1 、 Figure 2 and Figure 3 As shown, it can be understood that, specifically, the third through-hole 321 is a strip hole, the length direction of the strip hole extends from one of the inner protective plate 110 and the outer protective plate 120 to the other, and the second fastener 420 is passed through the strip hole. By adjusting the position of the second fastener 420 in the strip hole, it can be ensured that the two ends of the connecting frame 200 are respectively connected to the two connecting members 300 to compensate for processing errors or improve the applicability of the connecting frame 200.

[0070] Taking the left connecting piece 300 as an example, the second bracket 320 is connected to the right end of the first bracket 310, and the second bracket 320 is arranged at a right angle to the first bracket 310. The length direction of the second bracket 320 extends to the right, and the length direction of the bar hole set on the second bracket 320 extends from left to right.

[0071] Taking the right connecting piece 300 as an example, the second bracket 320 is connected to the left end of the first bracket 310, and the second bracket 320 is arranged at a right angle to the first bracket 310. The length direction of the second bracket 320 extends to the left, and the length direction of the bar hole set on the second bracket 320 extends from right to left.

[0072] Reference Figure 1 、 Figure 2 and Figure 3 As shown, it can be understood that the wall protection structure of the cofferdam also includes scaffolding and guardrails, wherein the scaffolding is erected on the upper ends of the inner guard plate 110 and the outer guard plate 120, and the inner guard plate 110 and the outer guard plate 120 can support the scaffolding, and the guardrails are connected to the upper ends of the scaffolding and are arranged around the outer edge of the scaffolding. The scaffolding and the guardrails together define a working platform for workers to walk on, so as to assist workers in carrying out river engineering construction operations.

[0073] Reference Figure 1 、 Figure 2 and Figure 3 As shown, a cofferdam of an embodiment of the present invention includes two cofferdam wall structures as shown in any of the above embodiments. In the wall structures of the two cofferdams, the two drainage channels 130 are parallel to each other, and the two drainage channels 130 are consistent with the water flow direction of the river channel where the cofferdam is located.

[0074] Reference Figure 1 、 Figure 2 and Figure 3As shown, the cofferdam includes the wall protection structure of the cofferdam shown in the first aspect, and the guard plate assembly also includes an inner guard plate 110 and an outer guard plate 120. The connecting frame 200 is arranged between the inner guard plate 110 and the outer guard plate 120, and the two ends of the connecting frame 200 are respectively connected to the inner guard plate 110 and the outer guard plate 120 to fix the relative position of the inner guard plate 110 and the outer guard plate 120, which is conducive to improving the bearing capacity of the wall protection structure of the cofferdam. The wall protection structure of the cofferdam constructs a through drainage channel 130 between the inner guard plate 110 and the outer guard plate 120, and the drainage channel 130 can provide water flow. The wall protection structure of the cofferdam The structure can be used in narrower rivers. The drainage channel 130 constructed between the inner protective plate 110 and the outer protective plate 120 can effectively improve the water-passing capacity of the wall structure of the cofferdam and improve the flood discharge capacity of the river during the flood season. The use of the connecting frame 200 instead of the backfill stabilizing material is conducive to avoiding the pollution of the river caused by the backfill material. The connecting frame 200 is provided with a first water hole 210 connected to the drainage channel 130. The setting of the first water hole 210 is conducive to enhancing the water-passing capacity of the wall structure of the cofferdam. The wall structure of the cofferdam can be applied to construction fields such as bridge pile foundations, abutments, and pier cofferdams.

[0075] Reference Figure 1 、 Figure 2 and Figure 3 As shown, a construction method of an embodiment of the present invention is applied to the wall protection structure of the cofferdam as shown in the above embodiment. The construction method includes the following steps:

[0076] Step S100, the inner protective plate 110 and the outer protective plate 120 are installed to a preset elevation;

[0077] In step S200, the groove 311 of the outer connector 300 is engaged with the upper end of the outer protective plate 120, and a hole is drilled in the outer protective plate 120 to form a first through-hole 140. The first fastener 410 is inserted through a waterproof gasket, the first through-hole 140, the second through-hole 312 of the outer connector 300, and another waterproof gasket to secure the outer connector 300 to the outer protective plate 120.

[0078] Step S300 , placing the connecting frame 200 between the two second brackets 320 of the outer connecting member 300 , and inserting the second fastener 420 through the strip hole of the outer connecting member 300 and the fourth through hole 220 of the connecting frame 200 to fix the connecting frame 200 and the outer connecting member 300 ;

[0079] Step S400: Engage the slide groove 311 of the inner connector 300 with the upper end of the inner protective plate 110, place the connecting frame 200 between the two second brackets 320 of the inner connector 300, and insert the second fastener 420 through the strip hole of the inner connector 300 and the fourth through-hole 220 of the connecting frame 200 to secure the connecting frame 200 to the inner connector 300.

[0080] In step S500, a hole is drilled in the inner protective plate 110 to form a first through-hole 140 in the inner protective plate 110, and a first fastener 410 is passed through a waterproof gasket, the first through-hole 140, the second through-hole 312 of the inner connecting member 300 and another waterproof gasket to fix the inner connecting member 300 and the inner protective plate 110.

[0081] Reference Figure 1 、 Figure 2 and Figure 3As shown, when the user constructs the retaining wall structure of the cofferdam, he can first insert the inner protective plate 110 and the outer protective plate 120 into the soil through the external piling equipment, so that the inner protective plate 110 and the outer protective plate 120 are arranged at intervals, and the inner protective plate 110 and the outer protective plate 120 are driven to a preset elevation, and then the slide groove 311 of the outer connecting member 300 can be engaged with the upper end of the outer protective plate 120, that is, the connecting member 300 is hung on the upper end of the outer protective plate 120, and then the outer protective plate 120 is drilled to form a hole on the outer protective plate 120. The first through-hole 140 is provided at the outer connecting member 300. The first fastener 410 is passed through a waterproof gasket, the first through-hole 140, the second through-hole 312 of the outer connecting member 300 and another waterproof gasket to fix the outer connecting member 300 and the outer protective plate 120. The connecting frame 200 is then placed between the two second brackets 320 of the outer connecting member 300. The second fastener 420 is passed through the strip hole of the outer connecting member 300 and the fourth through-hole 220 of the connecting frame 200 to fix the connecting frame 200 and the outer connecting member 300. The inner connecting member The slide groove 311 of 300 is engaged with the upper end of the inner guard plate 110, that is, the inner connecting member 300 is hung on the upper end of the inner guard plate 110, and the relative sliding of the slide groove 311 and the inner guard plate 110 can make the connecting frame 200 be placed between the two second brackets 320 of the inner connecting member 300, and the second fastener 420 is passed through the strip hole of the inner connecting member 300 and the fourth through hole 220 of the connecting frame 200 to fix the connecting member 300 and the connecting frame 200. By adjusting the position of the second fastener 420 in the strip hole, it is ensured that the connecting frame 200 is 0 is connected to two connecting members 300, and then the inner protective plate 110 is drilled to form a first through-hole 140 on the inner protective plate 110. At the inner connecting member 300, the first fastener 410 is passed through a waterproof gasket, the first through-hole 140, the second through-hole 312 of the inner connecting member 300 and the other waterproof gasket to fix the inner connecting member 300 and the inner protective plate 110. This construction method can effectively avoid the unfavorable working condition of being unable to install due to the misalignment of the inner connecting member 300 or the outer connecting member 300 through a reasonable construction sequence.

[0082] Reference Figure 1 、 Figure 2 and Figure 3 As shown, compared with direct welding, this construction method can reduce the amount of on-site welding work, is more convenient to assemble and disassemble, and the materials can be reused. Moreover, through the sliding of the inner protective plate 110 or the outer protective plate 120 in the slide groove 311, it is helpful to avoid the problem of insufficient drilling accuracy causing the inability to connect.

[0083] Reference Figure 1 、 Figure 2 and Figure 3As shown, the wall protection structure of the cofferdam can be used in narrower river channels. The drainage channel 130 constructed between the inner protective plate 110 and the outer protective plate 120 can effectively improve the water-passing capacity of the wall protection structure of the cofferdam, reduce the obstruction to the water flow, and improve the flood discharge capacity of the river during the flood season. The use of the connecting frame 200 to replace the backfill stabilizing material is conducive to avoiding the pollution of the river caused by the backfill material. The connecting frame 200 is provided with a first water hole 210 connected to the drainage channel 130. The setting of the first water hole 210 is conducive to enhancing the water-passing capacity of the wall protection structure of the cofferdam. The wall protection structure of the cofferdam can be applied to construction fields such as bridge pile foundations, abutments, and pier cofferdams.

[0084] It should be noted that this construction method can use a handheld plasma cutting machine to process the inner protective plate 110 or the outer protective plate 120 so that a first perforation 140 is formed on the inner protective plate 110 or the outer protective plate 120, and before processing the inner protective plate 110 or the outer protective plate 120, the processing accuracy can be improved by marking the area to be processed of the inner protective plate 110 or the outer protective plate 120.

[0085] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. The wall protection structure of the cofferdam is characterized by: include: A guard plate assembly comprises an inner guard plate (110) and an outer guard plate (120), wherein the inner guard plate (110) and the outer guard plate (120) are arranged at intervals, and a through drainage channel (130) is constructed between the inner guard plate (110) and the outer guard plate (120), wherein the drainage channel (130) is capable of allowing water to flow through; A connecting frame (200) is provided between the inner protective plate (110) and the outer protective plate (120), with both ends of the connecting frame (200) being connected to the inner protective plate (110) and the outer protective plate (120) respectively. The connecting frame (200) is provided with a first water hole (210) communicating with the drainage channel (130).

2. The wall protection structure of the cofferdam according to claim 1, characterized in that: The outer protective plate (120) is provided with a second water hole communicating with the drainage channel (130).

3. The wall protection structure of the cofferdam according to claim 1, characterized in that: The invention also includes two connecting members (300), wherein the connecting members (300) have a sliding groove (311) with an opening facing downward, and the sliding groove (311) is engaged with the upper end of the inner protective plate (110) or the upper end of the outer protective plate (120), and the two ends of the connecting frame (200) are respectively fixedly connected to the two connecting members (300).

4. The cofferdam wall protection structure according to claim 3, characterized in that: The invention also includes a first fastener (410) and two waterproof gaskets, the connecting member (300) is connected to the first fastener (410) and the two waterproof gaskets, the inner protective plate (110) and the outer protective plate (120) are both provided with a first through-hole (140), the connecting member (300) is provided with a second through-hole (312), and the first fastener (410) is passed through one of the waterproof gaskets, the first through-hole (140), the second through-hole (312) and the other waterproof gasket to fix the connecting member (300) and the inner protective plate (110) or the outer protective plate (120).

5. The cofferdam wall protection structure according to claim 4, characterized in that: The connecting member (300) includes a first bracket (310) and two second brackets (320), wherein the first bracket (310) is provided with the sliding groove (311), and the two second brackets (320) are connected to the same end of the first bracket (310), and the two second brackets (320) are arranged in an upper and lower manner and are both located in the drainage channel (130), and the two second brackets (320) are respectively connected to the upper end and the lower end of the connecting frame (200).

6. The cofferdam wall protection structure according to claim 5, characterized in that: A second fastener (420) is connected to the joint between the second bracket (320) and the connecting frame (200), the second bracket (320) is provided with a third through-hole (321), the connecting frame (200) is provided with a fourth through-hole (220) opposite to the third through-hole (321), and the second fastener (420) is passed through the third through-hole (321) and the fourth through-hole (220) to fix the connecting frame (200) and the connecting member (300).

7. The cofferdam wall protection structure according to claim 6, characterized in that: The third through hole (321) is a strip-shaped hole, and the length direction of the strip-shaped hole extends from one of the inner protective plate (110) and the outer protective plate (120) to the other.

8. The cofferdam wall protection structure according to claim 1, characterized in that: A plurality of the connecting frames (200) are provided, and the plurality of connecting frames (200) are arranged in an array along the length direction of the drainage channel (130).

9. The cofferdam wall protection structure according to claim 1, characterized in that: It also includes a guardrail and a scaffolding, wherein the scaffolding is connected to the upper ends of the inner guard plate (110) and the outer guard plate (120), and the guardrail is connected to the upper end of the scaffolding and is arranged around the outer edge of the scaffolding.

10. Cofferdam, characterized by: A retaining wall structure comprising the cofferdam according to any one of claims 1 to 9.

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