Decompression drainage anti-floating structure of dry dock

Abstract

The utility model discloses a decompression drainage anti-floating structure of a dry dock, and relates to the technical field of dry docks. The utility model provides a decompression drainage anti-floating structure of a dry dock. The decompression drainage anti-floating structure comprises a decompression drainage layer, an overhaul well and a drainage blind pipe, the decompression drainage layer is arranged at the bottom of the dock chamber bottom plate; the overhaul well penetrates through the dock chamber bottom plate and extends into the decompression drainage layer; the at least two overhaul wells are arranged on the side, close to the dock chamber combined pile wall, of the dock chamber bottom plate. The two ends of the drainage blind pipe are connected with the bottoms of the overhaul wells correspondingly, and the drainage blind pipe penetrates through the pressure reduction drainage layer. According to the embodiment provided by the utility model, the water stopping system is closed through the water stopping curtain arranged on the outer wall of the dock chamber combined pile wall, and meanwhile, the water drainage system is formed by the overhaul well, the decompression water drainage layer, the water drainage blind pipe and the water drainage open trench, so that underground water permeating into the lower part of the dock chamber bottom plate is drained, the pressure borne by the dock chamber bottom plate is reduced, and the dry dock is stable in structure; the service life of the dry dock is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dry docks, and more specifically to a dry dock decompression and drainage anti-floating structure. Background Art

[0002] A dry dock is a dock artificially built on the shore, with three sides of the dock facing the land and one side facing the water. It is mainly used to build, modify and repair ships. Dry docks are usually built on land near coastal waters. They are rectangular solid concrete structures, mainly composed of dock piers, dock walls and dock doors.

[0003] During the use of the dry dock, the bottom plate of the dock chamber often floats up due to the pressure from groundwater. Especially in the rainy season or in coastal areas with complex hydrogeological conditions, the lateral water pressure behind the dock wall and the water pressure under the bottom plate will pose a great threat to the safety of the dock chamber bottom plate structure. Utility Model Content

[0004] In view of this, the utility model provides a dry dock decompression drainage anti-floating structure, which can discharge the groundwater that has infiltrated under the bottom plate of the dock chamber and reduce the pressure on the bottom plate of the dock chamber.

[0005] The utility model provides a dry dock decompression drainage anti-floating structure, comprising: a decompression drainage layer, a maintenance well and a drainage blind pipe;

[0006] The pressure-reducing drainage layer is arranged at the bottom of the dock floor;

[0007] The inspection well penetrates the bottom plate of the dock chamber and extends into the pressure relief drainage layer;

[0008] The inspection wells include at least two, which are respectively arranged on one side of the dock floor close to the combined pile wall of the dock;

[0009] Both ends of the drainage blind pipe are respectively connected to the bottom of one of the inspection wells, and the drainage blind pipe passes through the pressure-reducing drainage layer.

[0010] In a possible implementation, the pressure-reducing drainage layer includes a first drainage layer, a second drainage layer, and a third drainage layer which are sequentially arranged from bottom to top.

[0011] In a possible implementation, the pressure-reducing drainage layer further includes a first geotextile layer disposed between the first drainage layer and the second drainage layer, and a second geotextile layer disposed on top of the third drainage layer.

[0012] In a possible implementation manner, the drainage blind pipe passes through the third drainage layer.

[0013] In a possible implementation, a plurality of filter holes are opened on the pipe wall of the drainage blind pipe, and a geotextile filter cloth is wrapped on the outer wall of the drainage blind pipe.

[0014] In a possible implementation, the inspection well includes a well cavity and a well wall arranged at a lower part of the well cavity;

[0015] The well cavity passes through the dock floor, and the well wall is arranged at the bottom of the dock floor and embedded in the pressure-reducing drainage layer.

[0016] In a possible implementation, the inspection well further includes a first cover plate disposed at the top of the well cavity and a second cover plate disposed in the middle of the well cavity.

[0017] In a possible implementation manner, a one-way valve is provided on the second cover plate.

[0018] In a possible implementation, it also includes an open drainage ditch and a connecting pipe;

[0019] The open drainage ditch is a groove opened on the top of the bottom plate of the dock chamber, and the open drainage ditch is located between the inspection well and the combined pile wall of the dock chamber;

[0020] The connecting pipe connects the open drainage ditch and the inspection well.

[0021] In a possible implementation, it also includes a water-stop curtain arranged at the lower part of the outer wall of the combined pile wall of the dock chamber.

[0022] Compared with the prior art, the present invention provides at least the following beneficial effects:

[0023] In the embodiment provided by the utility model, the water-stop curtain water-stop system provided on the outer wall of the combined pile wall of the dock chamber can effectively control the lateral deformation and vertical settlement of the dock wall and effectively cut off the seepage of groundwater. At the same time, the drainage system is formed by the inspection well, the pressure-reducing drainage layer, the drainage blind pipe and the drainage open ditch to discharge the groundwater that has infiltrated under the bottom plate of the dock chamber, reduce the pressure on the bottom plate of the dock chamber, ensure the stability of the dry dock structure, and extend the service life of the dry dock.

[0024] Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time.

[0025] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0027] Figure 1 A schematic diagram of a dry dock decompression and drainage anti-floating structure provided by the utility model;

[0028] Figure 2 A schematic diagram of the structure of a pressure-reducing drainage layer provided by the utility model;

[0029] Figure 3 A structural schematic diagram of a drainage blind pipe provided by the utility model;

[0030] Figure 4 The utility model provides a structural schematic diagram of a maintenance well. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0034] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0035] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] The dry dock at least comprises a dock floor 01 and a dock combined pile wall 02 connected to both sides of the dock floor 01. Figure 1 As shown, the embodiment of the utility model provides a dry dock decompression drainage anti-floating structure, including: a decompression drainage layer 10, a maintenance well 20 and a drainage blind pipe 30;

[0037] The pressure relief drainage layer 10 is arranged at the bottom of the dock floor 01;

[0038] The inspection well 20 penetrates the bottom plate 01 of the dock chamber and extends into the pressure relief drainage layer 10;

[0039] The inspection wells 20 include at least two, which are respectively arranged on one side of the dock floor 01 close to the dock combined pile wall 02;

[0040] Both ends of the drainage blind pipe 30 are respectively connected to the bottom of a maintenance well 20 , and the drainage blind pipe 30 passes through the pressure-reducing drainage layer 10 .

[0041] Specifically, refer to Figure 2 As shown, the pressure relief drainage layer 10 includes a first drainage layer 11, a second drainage layer 12 and a third drainage layer 13 arranged in sequence from bottom to top. The first drainage layer 11 is a 100 mm thick coarse sand leveling layer, the second drainage layer 12 is a 200 mm thick gravel, and the third drainage layer is a 300 mm thick gravel. Further, the pressure relief drainage layer 10 also includes a first geotextile layer 14 arranged between the first drainage layer 10 and the second drainage layer 20, and a second geotextile layer 15 arranged on the top of the third drainage layer 13, wherein the first geotextile layer 14 is a 450 g / ㎡ geotextile, and the second geotextile layer 15 is a 200 g / ㎡ geotextile.

[0042] Furthermore, the drainage blind pipe 30 passes through the third drainage layer 13 and is laid longitudinally and transversely along the dock floor 01. The drainage blind pipe 30 is made of hard polyvinyl chloride, which has the properties of corrosion resistance, low cost, light weight, and convenient construction, and can be reliably used during the life cycle of the dry dock project.

[0043] Specifically, refer to Figure 3 As shown, a plurality of filter holes 31 are provided on the wall of the drainage blind pipe 30, and the filter holes 31 are arranged in a plum blossom pattern with a spacing of 200 mm. The aperture of the filter holes 31 is 20 mm. The outer wall of the drainage blind pipe 30 is wrapped with a geotextile filter cloth 32. The geotextile filter cloth 32 includes at least two layers, and the geotextile filter cloth 32 uses a 200g / ㎡ geotextile filter cloth.

[0044] Furthermore, the dry dock decompression and drainage anti-floating structure further includes an open drainage ditch 40 and a connecting pipe 50;

[0045] The open drainage ditch 40 is a groove opened on the top of the dock floor 01, and the open drainage ditch 40 is located between the inspection well 20 and the combined pile wall 02 of the dock;

[0046] The connecting pipe 50 connects the open drainage ditch 40 and the inspection well 20. The open drainage ditch 40 is finally connected to the drainage pump room.

[0047] In the embodiment provided by the utility model, the inspection wells arranged at the edges of both sides of the dock floor are connected into a whole through drainage blind pipes, and the drainage blind pipes pass through the pressure-reducing drainage layer arranged below the dock floor, so that groundwater penetrates into the drainage blind pipes and then flows into the inspection wells. Then the groundwater is collected into the open drainage ditch through the connecting pipe and finally flows into the drainage pump room. The utility model can discharge the groundwater that has infiltrated below the dock floor, reduce the pressure on the dock floor, ensure the stability of the dry dock structure, and extend the service life of the dry dock.

[0048] In an optional embodiment, referring to Figure 4 As shown, the inspection well 20 includes a well cavity 21 and a well wall 22 arranged at the lower part of the well cavity 21; the well cavity 21 passes through the dock floor 01, and the well wall 22 is arranged at the bottom of the dock floor 01 and embedded in the pressure relief drainage layer 10.

[0049] It can be understood that the well wall 22 is a reinforced concrete structure. Since the well wall 22 is arranged at the bottom of the dock floor 01, the pressure relief drainage layer 10 is thickened at a position relative to the well wall 22, especially the third drainage layer 13. The third drainage layer 13 is thickened at a position relative to the well wall 22, and at least wraps the well wall 22.

[0050] Furthermore, a water-stop steel plate 27 is provided at the junction of the well wall 22 and the dock floor 3, and steel bars are reserved to be anchored in the dock floor 01, which can improve the anti-seepage effect and overall stability.

[0051] Furthermore, the inspection well 20 also includes a first cover plate 23 disposed at the top of the well cavity 21 and a second cover plate 24 disposed in the middle of the well cavity 21. The first cover plate 23 is a cast steel cover plate, and the second cover plate 24 is a reinforced concrete cover plate. In the vertical direction, the projection area of ​​the first cover plate 23 is larger than the projection area of ​​the well cavity 21, and the first cover plate 23 is clamped at the top of the well cavity 21. The second cover plate 24 is fastened to the dock floor 01 by anchor bolts 26.

[0052] Furthermore, a one-way valve 25 is provided on the second cover plate 24. The one-way valve 25 only allows the groundwater level to flow from bottom to top. And the connection position between the connecting pipe 50 and the inspection well 20 is between the first cover plate 23 and the second cover plate 24. Therefore, after the groundwater penetrates into the drainage blind pipe 30, it flows into the well cavity 21 of the inspection well 20, and can only be discharged from bottom to top into the cavity between the first cover plate 23 and the second cover plate 24, and then flows into the open drainage ditch 40 through the connecting pipe 50. The structure is stable and reliable.

[0053] In an optional embodiment, the dry dock decompression and drainage anti-floating structure further includes a water-stop curtain 60 disposed at the lower part of the outer wall of the dock chamber combined pile wall 02. The water-stop curtain 60 is two rows of high-pressure rotary jet piles with a diameter of 700 mm. The gaps between the pipe piles are blocked by high-pressure rotary jet piles with a diameter of 1000 mm to form a closed water-stop system.

[0054] In summary, the dry dock decompression and drainage anti-floating structure provided by the utility model achieves at least the following beneficial effects:

[0055] In the embodiment provided by the utility model, the water-stop curtain water-stop system provided on the outer wall of the combined pile wall of the dock chamber can effectively control the lateral deformation and vertical settlement of the dock wall and effectively cut off the seepage of groundwater. At the same time, the drainage system is formed by the inspection well, the pressure-reducing drainage layer, the drainage blind pipe and the drainage open ditch to discharge the groundwater that has infiltrated under the bottom plate of the dock chamber, reduce the pressure on the bottom plate of the dock chamber, ensure the stability of the dry dock structure, and extend the service life of the dry dock.

[0056] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A dry dock decompression and drainage anti-floating structure, the dry dock at least comprising a dock floor and a dock combined pile wall connected to both sides of the dock floor, characterized in that: The drainage anti-floating structure comprises: a pressure-reducing drainage layer, a maintenance well and a drainage blind pipe; The pressure-reducing drainage layer is arranged at the bottom of the dock floor; The inspection well penetrates the bottom plate of the dock chamber and extends into the pressure relief drainage layer; The inspection wells include at least two, which are respectively arranged on one side of the dock floor close to the combined pile wall of the dock; Both ends of the drainage blind pipe are respectively connected to the bottom of one of the inspection wells, and the drainage blind pipe passes through the pressure-reducing drainage layer; The inspection well comprises a well cavity and a well wall arranged at the lower part of the well cavity; The well cavity penetrates the dock floor, the well wall is arranged at the bottom of the dock floor and embedded in the pressure relief drainage layer; It also includes open drainage ditches and connecting pipes; The open drainage ditch is a groove opened on the top of the bottom plate of the dock chamber, and the open drainage ditch is located between the inspection well and the combined pile wall of the dock chamber; The connecting pipe connects the open drainage ditch and the inspection well.

2. The dry dock decompression and drainage anti-floating structure according to claim 1, characterized in that: The pressure-reducing drainage layer comprises a first drainage layer, a second drainage layer and a third drainage layer which are arranged in sequence from bottom to top.

3. The dry dock decompression and drainage anti-floating structure according to claim 2 is characterized in that: The pressure relief drainage layer further includes a first geotextile layer disposed between the first drainage layer and the second drainage layer, and a second geotextile layer disposed on top of the third drainage layer.

4. The dry dock decompression and drainage anti-floating structure according to claim 2, characterized in that: The drainage blind pipe passes through the third drainage layer.

5. The dry dock decompression and drainage anti-floating structure according to claim 1, characterized in that: A plurality of filter holes are provided on the pipe wall of the drainage blind pipe, and a geotextile filter cloth is wrapped on the outer wall of the drainage blind pipe.

6. The dry dock decompression and drainage anti-floating structure according to claim 1, characterized in that: The inspection well also includes a first cover plate arranged at the top of the well cavity and a second cover plate arranged in the middle of the well cavity.

7. The dry dock decompression and drainage anti-floating structure according to claim 6, characterized in that: A one-way valve is disposed on the second cover plate.

8. The dry dock decompression and drainage anti-floating structure according to claim 1, characterized in that: It also includes a water-stop curtain arranged at the lower part of the outer wall of the combined pile wall of the dock chamber.

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