A new type of steel cofferdam structure

Abstract

The utility model relates to the cofferdam construction field, specifically disclose a novel steel cofferdam structure, include: steel sheet pile, steel sheet pile closes in order to constitute cofferdam, outer guide beam, arrange in the outside of steel sheet pile, the outer guide beam is slidably provided with the limiting arm, and the limiting arm and the outer guide beam define one insertion space between, steel casing, steel casing is arranged in the four corners of cofferdam, and the outer guide beam is fixedly connected with steel casing. The beneficial effects of the above technical scheme are that: the steel casing set up can play the role of limiting to the construction of steel sheet pile, and the outer guide beam facilitates the construction of steel sheet pile and can reinforce the steel sheet pile in the later period.

Description

Technical Field

[0001] This utility model relates to the field of cofferdam technology, specifically to a novel steel cofferdam structure. Background Technology

[0002] In water conservancy projects and bridge foundation construction, steel cofferdams are a commonly used water-retaining structure to create a dry construction environment, ensuring the smooth progress of underwater foundation engineering. Traditional steel cofferdam structures typically use steel sheet piles to enclose the water-retaining area; however, in actual construction, many problems urgently need to be solved.

[0003] During sheet pile construction, it is difficult to precisely control the position and angle at which the sheet piles are driven into the riverbed. If the sheet piles are driven at an angle or deviate from the intended area, it will not only affect the overall sealing of the cofferdam, leading to leakage, but also reduce the stability of the cofferdam structure. Under water pressure, it may deform or even collapse, thereby affecting the project quality and construction safety, and increasing the cost of later repairs. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel steel cofferdam structure.

[0005] The present invention provides a technical solution as follows: a novel steel cofferdam structure, comprising:

[0006] Sheet piles are used to form a cofferdam.

[0007] An outer guide beam is arranged outside the steel sheet pile, and a limit arm is slidably provided on the outer guide beam, defining an insertion space between the limit arm and the outer guide beam;

[0008] Steel casings are placed at the four corners of the cofferdam, and the outer guide beams are fixedly connected to the steel casings.

[0009] The beneficial effects of the above technical solution are as follows: the steel casing can limit the construction of steel sheet piles, the outer guide beam facilitates the construction of steel sheet piles and can strengthen the steel sheet piles in the later stage.

[0010] Furthermore, the outer guide beam is connected to the steel casing via a support frame.

[0011] Furthermore, the outer side of the sheet pile is provided with a docking part that connects with the outer guide beam.

[0012] Furthermore, the docking section includes two docking saddles arranged vertically at intervals, and force-bearing rods are provided on the docking saddles.

[0013] Furthermore, a hydraulic jack is arranged on the steel casing, facing the steel sheet pile. The hydraulic jack is arranged horizontally, with its first end connected to the steel sheet pile and its second end rotatably connected to the steel casing.

[0014] Furthermore, a sliding groove is provided on the outer guide beam, and a slider is slidably disposed in the sliding groove. The slider is connected to the limiting arm through a cantilever. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the structure for installing the first steel sheet pile and connecting the hydraulic jack in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the structure of the first steel sheet pile and the limiting arm in an embodiment of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure after installation in an embodiment of this utility model;

[0020] Figure 5 This is a schematic diagram showing the connection between the steel sheet pile and the hydraulic jack in an embodiment of this utility model;

[0021] Figure 6 This is a schematic diagram showing the connection between the sheet pile and the guide beam in an embodiment of this utility model;

[0022] Figure 7 This is a schematic diagram of the connecting rod in an embodiment of this utility model.

[0023] Reference numerals: steel casing 100, outer guide beam 200, connecting rod 210, first rod body 211, threaded sleeve 212, second rod body 213, steel sheet pile 300, vertical rod 310, connecting saddle 320, hydraulic jack 400, slider 500, limit arm 510, cable 520, roller 530. Detailed Implementation

[0024] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0025] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0026] like Figure 1-6 As shown, this embodiment provides a novel steel cofferdam structure, including: steel sheet piles 300, which are joined together to form a cofferdam; during construction, the steel sheet piles 300 interlock until they connect end to end to form a complete closed water-retaining area. The steel sheet piles 300 are easy to construct and can be recycled later. An outer guide beam 200 is arranged outside the steel sheet piles 300, and a limiting arm 510 is slidably installed on the outer guide beam 200, defining an insertion space between the limiting arm 510 and the outer guide beam 200; the outer guide beam 200 can pre-plan the path of the steel sheet piles and guide the steel sheet piles 300 driven into the riverbed, so that the steel sheet piles 300 can be driven into the predetermined area at the correct angle. The predetermined area refers to the location in the riverbed where the steel sheet piles 300 are to be driven, and the driving angle is generally preferably perpendicular to the horizontal plane. Driving the steel sheet piles 300 into the riverbed at an angle perpendicular to the horizontal plane ensures that the cofferdam after encirclement is more stable. Steel casings 100 are arranged at the four corners of the cofferdam, and outer guide beams 200 are fixedly connected to the steel casings 100. The steel casings 100 are more rigid than the steel sheet piles 300, and their ability to maintain verticality is also stronger than that of the steel sheet piles 300. During construction, the steel casings 100 are driven into the riverbed before the steel sheet piles 300, playing a guiding and auxiliary role in the construction of the steel sheet piles 300.

[0027] The steel casing 100 can limit the construction of the sheet pile 300, and the outer guide beam 200 facilitates the construction of the sheet pile 300 and can reinforce the sheet pile 300 in the later stage.

[0028] In some embodiments, the outer guide beam 200 is connected to the steel casing 100 via a support frame. The outer guide beam 200 is also constructed before the sheet piles 300. To fix the outer guide beam 200, it is necessary to fix the outer guide beam 200 and the steel casing 100 together. The outer guide beam 200 can be formed by combining four steel beams.

[0029] In some embodiments, the outer side of the sheet pile 300 is provided with a mating part that connects with the outer guide beam 200. After all the sheet piles 300 are inserted into the riverbed, the guiding function of the outer guide beam 200 is completed. After the outer guide beam 200 is used, it can be fixedly connected to the laid sheet piles 300, specifically through the mating part on the sheet pile 300 and the outer guide beam 200.

[0030] In some embodiments, the docking section includes two docking saddles 320 arranged vertically at intervals, with a force-bearing rod provided on each docking saddle 320. Each docking saddle 320 includes a fixed plane through which it is welded or bolted to the sheet pile 300. When using bolts, a fixing hole needs to be made in the fixed plane. The docking saddle 320 also has a pair of fixing lugs, with the force-bearing rod fixed between the two lugs. The upper docking saddle 320 is positioned above the outer guide beam 200, and the lower docking saddle 320 is positioned below the outer guide beam 200.

[0031] Furthermore, the outer guide beam 200 and the load-bearing rod are connected by a connecting rod 210. The connecting rod 210 includes a first rod body 211 and a second rod body 213. Hooks are provided at the outer ends of both the first rod body 211 and the second rod body 213, forming a rotatable but non-disengaging connection between the hooks and the connected rods. The inner ends of the first rod body 211 and the second rod body 213 are connected by a threaded sleeve 212. The distance between the first rod body 211 and the second rod body 213 can be adjusted using the threaded sleeve 212. The longer the portion of the first rod body 211, the second rod body 213, and the threaded sleeve 212 are connected, the shorter the overall length of the connecting rod 210, and vice versa. The outer guide beam 200 and the two connecting saddles 320 are each connected by two connecting rods 210.

[0032] In some embodiments, a hydraulic jack 400 is also arranged on the steel casing 100, facing the sheet pile 300. The hydraulic jack 400 is horizontally arranged, with its first end connected to the sheet pile 300 and its second end rotatably connected to the steel casing 100. Generally, the accuracy of driving the first sheet pile 300 will have a chain effect on the subsequent sheet piles 300. For the sheet piles 300 that have already sunk, continuous attitude adjustment is required so that the final driving angle meets the requirements. Specifically, the hydraulic jack 400 can push the sheet piles 300 towards the inside of the cofferdam or pull the sheet piles 300 towards the outside of the cofferdam, thereby adjusting the sheet piles 300 that have entered the water.

[0033] Furthermore, to increase the adjustability range of the sheet pile 300, a vertical rod 310 is installed on the outer wall of the sheet pile 300. A gap exists between the vertical rod 310 and the outer wall of the sheet pile 300. The first end of the hydraulic jack 400 is fitted onto the vertical rod 310 and can slide along it. This allows the sheet pile 300 to be pushed and pulled by the hydraulic jack 400 during its sinking process. The area covered by the vertical rod 310 is mainly when the sheet pile 300 is about to contact the riverbed and has just entered the riverbed at a shallow depth. The first end of the hydraulic jack 400 is equipped with a locking hook, which facilitates the installation and removal of the hydraulic jack 400 from the vertical rod 310. The locking hook can withstand both tensile and thrust forces.

[0034] In some embodiments, the outer guide beam 200 is provided with a groove, and a slider 500 is slidably disposed within the groove. The slider 500 is connected to a limiting arm 510 via a cantilever. The cooperation between the slider 500 and the groove allows the limiting arm 510 to move relative to the outer guide beam 200, thereby limiting the steel sheet piles 300 at different driving positions. The outer guide beam 200 can be made of channel steel, and the groove is the inner groove of the channel steel. The slider 500 can be a block-shaped object, and its position can be changed directly by manual movement during use. Furthermore, the slider 500 can also be pulled by a cable 520. Specifically, the slider 500 is first moved to one end of the outer guide beam 200, that is, the construction position of the first steel sheet pile 300 on one side of the outer guide beam 200. After the first steel sheet pile 300 is driven into the water, the cable 520 is pulled to move the slider 500 to the next position for continued use. This process is repeated until all the steel sheet piles 300 on one side are driven in. Furthermore, the cable 520 is connected to the winding roller 530. By rotating the winding roller 530, the cable 520 is wound up, which in turn drives the slider 500 to move. The winding roller 530 and the cable 520 can be removed after use. The slider 500 and the limiting arm 510 can also be moved out of the chute.

[0035] In the description of this application, it should be understood that the terminology used is for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0036] In this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A novel steel cofferdam structure, characterized in that, include: Sheet piles (300mm) are used to form a cofferdam. An outer guide beam (200) is arranged outside the steel sheet pile (300), and a limiting arm (510) is slidably provided on the outer guide beam (200), defining an insertion space between the limiting arm (510) and the outer guide beam (200); Steel casing (100) is arranged at the four corners of the cofferdam, and the outer guide beam (200) is fixedly connected to the steel casing (100).

2. The novel steel cofferdam structure according to claim 1, characterized in that, The outer guide beam (200) is connected to the steel casing (100) via a support frame.

3. The novel steel cofferdam structure according to claim 1, characterized in that, The outer side of the sheet pile (300) is provided with a docking part that connects with the outer guide beam (200).

4. A novel steel cofferdam structure according to claim 3, characterized in that, The docking section includes two docking saddles (320) arranged vertically at intervals, and a force-bearing rod is provided on the docking saddles (320).

5. A novel steel cofferdam structure according to claim 1, characterized in that, A hydraulic jack (400) is also arranged on the steel casing (100) facing the steel sheet pile (300). The hydraulic jack (400) is arranged horizontally. The first end of the hydraulic jack (400) is hinged to the steel sheet pile (300), and the second end is rotatably connected to the steel casing (100).

6. A novel steel cofferdam structure according to claim 1, characterized in that, The outer guide beam (200) is provided with a sliding groove, and a slider (500) is slidably disposed in the sliding groove. The slider (500) is connected to the limiting arm (510) through a cantilever.

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