A cofferdam structure for bridge construction

Abstract

This utility model relates to the field of bridge cofferdam technology, and discloses a cofferdam structure for bridge construction, including a ground surface. Riverbanks are fixedly connected to the top left and right sides of the ground surface. Multiple wooden piles are fixedly connected to the top front and rear sides of the ground surface. Multiple horizontal plates are fixedly connected to the front and rear sides of the wooden piles. Connecting plates are fixedly connected to the front sides of the horizontal plates. Cohesive soil is fixedly connected between adjacent horizontal plates. Trapezoidal soil masses are fixedly connected between adjacent connecting plates. Support mechanisms are provided on the opposite sides of the connecting plates. In this utility model, the wooden piles are inserted 1.5 meters deep into the ground to provide stable support for the cofferdam. The horizontal plates and connecting plates form relatively closed spaces. The gaps between the horizontal plates are filled with cohesive soil, filling the voids. The trapezoidal soil masses at the connecting plates can resist the impact of river water, thus achieving a simple structure, convenient construction, and the ability to quickly cut off water flow.

Description

Technical Field

[0001] This utility model relates to the field of bridge cofferdam technology, and in particular to a cofferdam structure for bridge construction. Background Technology

[0002] During bridge construction, especially in the water environment of rivers and lakes, cofferdams are needed to provide a dry working environment. Pile foundation construction is often required. To ensure the smooth progress of construction, cofferdam structures are needed to cut off the water flow and keep the construction area dry. Traditional cofferdam structures are complex to construct, have poor stability, and have a significant impact on the surrounding environment.

[0003] A search revealed Chinese patent publication number CN218291630U, which discloses a steel cofferdam structure for bridge construction. The structure includes a lower cofferdam and protective components. An upper cofferdam outer side is located above the lower cofferdam. The protective components, used to buffer impacts, are located on the outer sides of both the lower and upper cofferdams. Each protective component includes a mounting frame, mounting groove, mounting strip, mounting plate, base plate, resistance spring, resistance rod, and protective plate. The mounting frame is fixedly connected to the outer sides of the lower and upper cofferdams. A mounting groove is formed on the side of the mounting frame away from the lower and upper cofferdams. A mounting strip is engaged within the mounting groove, and a mounting plate is fixedly connected above the mounting strip. A base plate is fixedly connected to the side of the mounting plate and mounting strip away from the mounting frame, and a resistance spring is fixedly connected to the side of the base plate away from the mounting plate. This utility model, through the cooperation of its various components, can provide protection for the cofferdam when it is subjected to impacts, and damaged units can be replaced individually when the protective plate is damaged. However, in practice, the large number of components required for installation leads to a complex structure and makes construction difficult. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a cofferdam structure for bridge construction, aiming to improve the problem of complex structure and difficult construction caused by the excessive number of components required in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cofferdam structure for bridge construction, comprising a ground surface, with riverbanks fixedly connected to the top left and right sides of the ground surface, multiple wooden piles fixedly connected to the top front and rear sides of the ground surface, multiple horizontal plates fixedly connected to the front and rear sides of the multiple wooden piles, connecting plates fixedly connected to the front sides of the multiple horizontal plates, cohesive soil fixedly connected between adjacent horizontal plates, trapezoidal soil bodies fixedly connected between adjacent connecting plates, and a support mechanism provided on the opposite side of the multiple connecting plates.

[0006] The above technical solution provides stable support for the cofferdam by using a trapezoidal riverbank at the top of the ground and wooden piles with a depth of not less than 1.5 meters on the front and back sides. The wooden piles are connected to horizontal plates at the front and back, and there is a connecting plate in front of the horizontal plates to form a relatively closed space. The gaps between the horizontal plates are filled with cohesive soil, which utilizes its dense and impermeable properties to fill the gaps. The trapezoidal soil at the connecting plate can resist the impact of river water, thus achieving a simple structure, convenient construction, and the ability to quickly cut off the water flow.

[0007] As a further description of the above technical solution: The support mechanism includes two fixing plates, which are fixedly connected to each other on opposite sides of a connecting plate. Two connecting seats are fixedly connected to opposite sides of the two fixing plates. Support columns are fixedly connected inside the connecting seats. Two fixing plates are fixedly connected to the top front and rear sides of the ground. Multiple grooves are provided on the top of the fixing plates. Pins are fixedly connected to the bottom of the fixing plates.

[0008] Through the above technical solution: the pin is inserted into the ground, so that the second fixed plate is firmly connected to the ground and becomes a stable support point. When the cofferdam is subjected to external load, the connecting seat is rotated and the support column is aligned with the groove and inserted, which improves the load-bearing capacity, transmits force and restricts displacement at the same time. The pin restricts the movement of the second fixed plate, thereby improving the stability of the entire cofferdam structure.

[0009] As a further description of the above technical solution: Lighting frames are fixedly connected to the top of both riverbanks, and lighting lamps are fixedly connected to the top of both lighting frames.

[0010] The above technical solution involves installing light stands on the top of both riverbanks, with lighting fixtures fixed at the top of the stands. This greatly improves the brightness of the work area and facilitates various operations.

[0011] As a further description of the above technical solution: The tops of the two trapezoidal soil bodies are fixedly connected to cover plates, and the bottoms of the outer walls of the multiple pins are fixedly connected to multiple clamping plates.

[0012] The above technical solution involves a cover plate on top of the two trapezoidal soil bodies, which effectively prevents river water from intruding and ensures that the internal structure is not affected by the river water.

[0013] As a further description of the above technical solution: Each of the multiple connectors has a cap fixedly connected to its left and right sides, and all of the caps have a smooth design.

[0014] Through the above technical solution: the bottom outer wall of multiple pins is connected to multiple locking plates, which greatly enhances the locking force with the ground and stabilizes the second fixing plate. The left and right sides of the connecting seat are equipped with smoothly designed caps to prevent the internal rotating rod from falling off, thus ensuring the reliability of the support structure.

[0015] As a further description of the above technical solution: Each of the multiple connecting plates has a threaded hole on the opposite side, and each of the multiple threaded holes is threaded with a bolt.

[0016] The above technical solution involves threaded holes on opposite sides of multiple connecting plates, with bolts screwed into each threaded hole to fix the connecting plates to the horizontal plate.

[0017] As a further description of the above technical solution: The adjacent horizontal plates are fixedly connected at equal intervals to the front and rear sides of the outer wall of the wooden pile, and the adjacent connecting plates are fixedly connected at equal intervals to the opposite side of the horizontal plates.

[0018] Through the above technical solution: multiple horizontal plates are equidistantly connected to the front and rear outer walls of the wooden pile, and multiple connecting plates are also equidistantly arranged and fixed on the side of the horizontal plates that is far away from each other.

[0019] As a further description of the above technical solution: The multiple connecting seats are all fixedly connected at equal intervals to the opposite side of the fixing plate.

[0020] Through the above technical solution, multiple connecting seats are also equidistantly distributed on the side of the fixed plate, which effectively improves the stability and reliability of the entire cofferdam structure.

[0021] This utility model has the following beneficial effects: 1. In this utility model, the trapezoidal riverbank at the top of the ground and the wooden piles with a depth of not less than 1.5 meters on the front and back sides provide stable support for the cofferdam. The wooden piles are connected to the front and back with horizontal plates, and there is a connecting plate in front of the horizontal plates to form a relatively closed space. The cohesive soil filling the gaps between the horizontal plates utilizes its dense and impermeable properties to fill the gaps. The trapezoidal soil at the connecting plate can resist the impact of river water, thus achieving a simple structure, convenient construction, and the ability to quickly cut off the water flow.

[0022] 2. In this utility model, the pin is inserted into the ground, so that the second fixing plate is firmly connected to the ground and becomes a stable support point. When the cofferdam is subjected to external load, the connecting seat is rotated and the support column is aligned with the groove and inserted, which improves the bearing capacity, transmits force and restricts displacement at the same time. The pin restricts the movement of the second fixing plate, thereby improving the stability of the entire cofferdam structure. Attached Figure Description

[0023] Figure 1This is a perspective view of a cofferdam structure for bridge construction proposed in this utility model; Figure 2 This is a front view of a cofferdam structure for bridge construction proposed in this utility model; Figure 3 This is a split view of the horizontal plate of a cofferdam structure for bridge construction proposed in this utility model; Figure 4 for Figure 3 Enlarged view at point A; Figure 5 This is a schematic diagram of the connecting seat of a cofferdam structure for bridge construction proposed in this utility model.

[0024] Legend: 1. Ground; 2. Support mechanism; 201. Fixing plate one; 202. Connecting seat; 203. Support column; 204. Fixing plate two; 205. Groove; 206. Pin; 3. Riverbank; 4. Wooden pile; 5. Horizontal plate; 6. Connecting plate; 7. Cohesive soil; 8. Trapezoidal soil body; 9. Lamp holder; 10. Lighting lamp; 11. Cover plate; 12. Clamping plate; 13. Cap; 14. Threaded hole; 15. Bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 and Figure 3 This utility model provides an embodiment of a cofferdam structure for bridge construction, including a ground surface 1. Riverbanks 3 are fixedly connected to the top left and right sides of the ground surface 1. The two riverbanks 3 are trapezoidal, forming an inverted trapezoid between adjacent sections, with river water inside. Multiple wooden piles 4 are fixedly connected to the top front and rear sides of the ground surface 1. These piles are made of red pine wood, six meters long and with a diameter of not less than ten centimeters, and are driven into the soil by an excavator to a depth of not less than 1.5 meters. Multiple horizontal plates 5 are fixedly connected to the front and rear sides of the multiple wooden piles 4. Connecting plates 6 are fixedly connected to the front of the multiple horizontal plates 5 and are set on the front and rear sides of the wooden piles 4. Cohesive soil 7 is fixedly connected between adjacent horizontal plates 5 to fill the spaces between the multiple wooden piles 4 and enhance the waterproof performance of the cofferdam. Trapezoidal soil bodies 8 are fixedly connected between adjacent connecting plates 6. Supporting mechanisms 2 are provided on the opposite sides of the multiple connecting plates 6 to increase the supporting force of the wooden piles 4. Specifically, at the top of ground 1, the left and right sides are firmly connected to riverbanks 3. These two riverbanks 3 have a trapezoidal structure, and their adjacent parts form a unique inverted trapezoidal space, which accommodates the river water. At the front and back sides of the top of ground 1, there are multiple wooden piles 4. These wooden piles 4 are made of red pine wood, which is six meters long and has a diameter of no less than ten centimeters. They are pressed into the soil with the help of an excavator, and the depth of penetration is strictly guaranteed to be no less than 1.5 meters. At the front and back sides of the multiple wooden piles 4, multiple horizontal plates 5 are fixedly connected. Each horizontal plate 5 has a connecting plate 6 on its front side, and these connecting plates 6 are positioned at the front and back of the wooden piles 4. The gaps between the multiple horizontal plates 5 are filled with cohesive soil 7. The cohesive soil 7 fills the gaps between the wooden piles 4, thereby effectively enhancing the waterproof performance of the cofferdam. At the joints between the multiple connecting plates 6, trapezoidal soil bodies 8 are fixedly connected. The structure is simple, easy to construct, and can quickly cut off the water flow, ensuring that the construction area is dry.

[0027] Reference Figure 5 The support mechanism 2 includes two fixed plates 201. The two fixed plates 201 are fixedly connected to each other on the opposite side of the connecting plate 6. The opposite side of the two fixed plates 201 is fixedly connected to two connecting seats 202. The interior of the multiple connecting seats 202 is fixedly connected to a support column 203. The front and rear sides of the top of the ground 1 are fixedly connected to two fixed plates 204. The top of the multiple fixed plates 204 is provided with multiple grooves 205. The bottom of the multiple fixed plates 204 is fixedly connected to a pin 206. When support is needed, the connecting seats 202 connected to the support column 203 are rotated, so that the support column 203 rotates inside the connecting seat 202. The pin 206 at the bottom of the fixed plate 204 is inserted into the ground 1, and the support column 203 is inserted into the groove 205 to increase the support of the wooden stake 4. Specifically, two fixing plates 201 are fixed on adjacent sides to the opposite sides of the connecting plate 6. The opposite sides of the two fixing plates 201 are each connected to two connecting seats 202. Support columns 203 are fixed inside the multiple connecting seats 202. Two fixing plates 204 are fixed on the front and rear sides of the top of the ground 1. Multiple grooves 205 are opened on the top of each fixing plate 204, and pins 206 are installed at the bottom. When it is necessary to enhance the support performance of the wooden pile 4, the construction workers first rotate the connecting seat 202 connected to the support column 203, so that the support column 203 can rotate flexibly inside the connecting seat 202. The pins 206 at the bottom of the fixing plate 204 are then firmly inserted into the ground 1 to fix the fixing plate 204. The support column 203 is then aligned with the groove 205 and inserted, which enhances the support capacity of the wooden pile 4 and improves the stability of the entire cofferdam structure.

[0028] Reference Figure 1 and Figure 2Lighting brackets 9 are fixedly connected to the top of both riverbanks 3, and lighting lamps 10 are fixedly connected to the top of both lighting brackets 9 to increase the brightness of the working area. Cover plates 11 are fixedly connected to the top of both trapezoidal soil bodies 8 to prevent river water from entering. Multiple locking plates 12 are fixedly connected to the bottom of the outer wall of multiple pins 206 to increase the locking force with the ground 1. Caps 13 are fixedly connected to the left and right sides of multiple connecting seats 202. Multiple caps 13 are all rounded to prevent the rotating rod inside the connecting seat 202 from falling off. Specifically, light stands 9 are installed on the top of both riverbanks 3, with lighting lamps 10 fixed at the top of the light stands 9. This greatly improves the brightness of the working area and facilitates various operations. The top of the two trapezoidal soil bodies 8 is equipped with cover plates 11, which effectively prevents river water from intruding and ensures that the internal structure is not affected by the river water. The bottom outer walls of multiple pins 206 are connected to multiple clamping plates 12, which greatly enhances the clamping force with the ground 1 and stabilizes the fixing plate 204. The left and right sides of the connecting seat 202 are equipped with smoothly designed caps 13 to prevent the internal rotating rod from falling off and ensure the reliability of the support structure.

[0029] Reference Figure 3 , Figure 4 and Figure 5 Each of the multiple connecting plates 6 has a threaded hole 14 on the opposite side, and each of the multiple threaded holes 14 has a bolt 15 threaded inside for fixing the connecting plate 6 to the horizontal plate 5. The multiple horizontal plates 5 are fixedly connected to the front and rear sides of the outer wall of the wooden pile 4 at equal distances. The multiple connecting plates 6 are fixedly connected to the opposite side of the horizontal plate 5 at equal distances. The multiple connecting seats 202 are fixedly connected to the opposite side of the fixing plate 201 at equal distances. Specifically, threaded holes 14 are opened on opposite sides of multiple connecting plates 6, and bolts 15 are screwed into each threaded hole 14 to firmly fix the connecting plates 6 to the horizontal plates 5. Multiple horizontal plates 5 are equidistantly connected to the front and rear outer walls of the wooden piles 4. Multiple connecting plates 6 are also equidistantly arranged and fixed on the opposite side of the horizontal plates 5. On the opposite side of the fixing plate 201, multiple connecting seats 202 are also equidistantly distributed, which effectively improves the stability and reliability of the entire cofferdam structure.

[0030] Working principle: The trapezoidal riverbanks 3 connected to the top left and right sides of the ground 1 form an inverted trapezoidal space to contain the river water. The wooden piles 4 on the front and back sides of the top of the ground 1 are pressed into the soil by the excavator to a depth of not less than 1.5 meters, providing stable support for the entire cofferdam and withstanding the pressure from above and the surroundings. The front and back sides of multiple wooden piles 4 are fixedly connected to horizontal plates 5. The front side of the horizontal plates 5 is provided with connecting plates 6, forming a relatively closed space. The cohesive soil 7 filled in the gaps between the adjacent horizontal plates 5 fully utilizes its dense and impermeable properties, effectively filling the gaps between the wooden piles 4, enhancing the waterproof performance of the cofferdam, and preventing river water from seeping in. The trapezoidal soil 8 fixedly connected to the adjacent connecting plates 6 further enhances the stability of the cofferdam. The trapezoidal soil 8 can not only resist the impact of the river water and reduce the damage of the water flow to the cofferdam structure, but also prevent water from seeping out from the gaps in the connecting plates 6, playing a supplementary and reinforcing role in the waterproof performance. Furthermore, the pin 206 is inserted into the ground 1, allowing the second fixing plate 204 to be firmly connected to the ground 1, forming a stable foundation support point. The connecting seat 202 is rotated so that the support column 203 is aligned with the groove 205 and inserted. A stable vertical support system is built between the first fixing plate 201, the connecting seat 202, and the second fixing plate 204, enhancing its load-bearing capacity. When external loads act on the cofferdam, the force is transmitted from the wooden pile 4 through the connecting plate 6 to the first fixing plate 201. The first fixing plate 201 transfers the force to the connecting seat 202 and the support column 203. The support column 203 then transmits the force to the second fixing plate 204, and finally disperses it to the ground 1. The cooperation between the groove 205 and the support column 203 not only realizes the transmission of force but also restricts the displacement of the support column 203, enhancing the stability of the connection. The pin 206 is inserted into the ground 1, restricting the movement of the second fixing plate 204, thereby improving the stability of the entire cofferdam structure.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cofferdam structure for bridge construction, comprising ground (1), characterized in that: The top left and right sides of the ground (1) are fixedly connected to riverbanks (3), the top front and back sides of the ground (1) are fixedly connected to multiple wooden piles (4), the front and back sides of the multiple wooden piles (4) are fixedly connected to multiple horizontal plates (5), the front sides of the multiple horizontal plates (5) are fixedly connected to connecting plates (6), the adjacent horizontal plates (5) are fixedly connected to cohesive soil (7), the adjacent connecting plates (6) are fixedly connected to trapezoidal soil bodies (8), and the opposite sides of the multiple connecting plates (6) are provided with support mechanisms (2).

2. The cofferdam structure for bridge construction according to claim 1, characterized in that: The support mechanism (2) includes two fixing plates (201), which are fixedly connected to each other on the opposite side of the connecting plate (6). Two connecting seats (202) are fixedly connected to each opposite side of the two fixing plates (201). Support columns (203) are fixedly connected inside each of the multiple connecting seats (202). Two fixing plates (204) are fixedly connected to the front and rear sides of the top of the ground (1). Multiple grooves (205) are opened on the top of the multiple fixing plates (204). Pins (206) are fixedly connected to the bottom of the multiple fixing plates (204).

3. The cofferdam structure for bridge construction according to claim 1, characterized in that: Lighting fixtures (9) are fixedly connected to the top of both riverbanks (3), and lighting lamps (10) are fixedly connected to the top of both lighting fixtures (9).

4. A cofferdam structure for bridge construction according to claim 2, characterized in that: The tops of the two trapezoidal soil bodies (8) are fixedly connected with cover plates (11), and the bottoms of the outer walls of the multiple pins (206) are fixedly connected with multiple clamping plates (12).

5. A cofferdam structure for bridge construction according to claim 2, characterized in that: Each of the multiple connectors (202) has a cap (13) fixedly connected to its left and right sides, and each of the multiple caps (13) has a smooth design.

6. A cofferdam structure for bridge construction according to claim 1, characterized in that: Each of the connecting plates (6) has a threaded hole (14) on the opposite side, and each of the threaded holes (14) has a bolt (15) threaded inside.

7. A cofferdam structure for bridge construction according to claim 1, characterized in that: The adjacent horizontal plates (5) are fixedly connected at equal intervals to the front and rear sides of the outer wall of the wooden pile (4), and the adjacent connecting plates (6) are fixedly connected at equal intervals to the opposite side of the horizontal plates (5).

8. A cofferdam structure for bridge construction according to claim 2, characterized in that: The multiple connecting seats (202) are all fixedly connected at equal intervals to the opposite side of the fixing plate (201).

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