Open caisson transversely penetrating through pipeline and sealed after groove reserving

Abstract

The utility model discloses a closed open caisson transversely penetrating through a pipeline and reserved in a groove, and belongs to the technical field of building construction. A closed open caisson transversely penetrating through a pipeline reserved groove comprises a pipeline body and a foundation pit located below the pipeline body, a waterproof curtain is arranged in the foundation pit, a blade foot is arranged in the foundation pit, the open caisson further comprises well walls symmetrically arranged on the blade foot, a notch is formed between the two sets of well walls, and the width of the notch is larger than that of the pipeline body; the first baffle and the second baffle are used for shielding the two sides of the notch respectively, the first baffle is fixedly connected with the second baffle through a connecting rod, the first baffle and the second baffle are each of an arc-shaped structure, and the outer wall of the first baffle is tangent to the inner wall of the well wall; the first baffle and the second baffle are arranged on the two sides of the notch respectively, soil entering the notch can be reduced, the cleaning difficulty is lowered, the situation that the welding strength is lowered due to the fact that the soil affects the welding effect can be avoided, and the pouring quality of concrete can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a closed caisson after a groove is left for a transverse pipeline. Background Art

[0002] The construction of caissons for culverts or piers is usually based on prefabricated units. The caisson walls are hoisted in parts and the soil is excavated in the caisson. The caisson walls are overcome by their own weight to make them sink to the designed elevation. However, in urban environments, there are many underground structures such as underground pipelines and culverts, and their spatial distribution may coincide with the settlement construction location. In this case, the location of the caisson is usually changed to avoid these pipelines, or the location of existing pipelines is changed or cut off to facilitate settlement construction, or a cast-in-place caisson is used. However, in specific environments and conditions, such as when the urban space is small and the settlement location cannot be changed, or when the underground pipelines are particularly important and cannot be intervened, cut off or changed by administrative means, the cast-in-place caisson occupies a large area and has complex support, so the cost is particularly high.

[0003] In the prior art, the well is caissoned by symmetrically splitting the well wall into two halves, so that the well can be symmetrically sunk on both sides of the existing pipeline, and then the slot is closed to close the well walls on both sides. However, during the process of taking soil and sinking the well wall, mud can easily enter the slot, increasing the difficulty of subsequent cleaning. If it is not cleaned properly, it will not only affect the welding strength of the steel bars, but also affect the quality of concrete pouring. The mud remaining on the steel bars will affect the bonding force between the steel bars and the concrete, resulting in a decrease in the overall strength of the concrete structure. In addition, the impurities and voids in the mud will leave pores in the concrete, and even cause cracks to form in the concrete, reducing the density and durability of the concrete structure and affecting the quality of the caisson. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that mud easily enters the slot, which increases the difficulty of cleaning on the one hand and reduces the strength of the slot on the other hand, and proposes a closed caisson after leaving a slot for a transverse pipeline.

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

[0006] A closed caisson after leaving a groove for a transverse pipeline comprises a pipeline body and a foundation pit located below the pipeline body, wherein a water-stop curtain is arranged in the foundation pit, and a blade foot is arranged in the foundation pit, and further comprises: well walls symmetrically arranged on the blade foot, a groove is formed between two groups of the well walls, and the width of the groove is greater than the width of the pipeline body; a first baffle and a second baffle respectively used to shield the two sides of the groove, wherein the first baffle is fixedly connected to the second baffle by a connecting rod, the first baffle and the second baffle are both arc-shaped structures, and the radius of the outer wall of the first baffle is equal to the radius of the inner wall of the well wall.

[0007] In order to facilitate the overlapping use of the first baffle and the second baffle, preferably, one end of the first baffle and the second baffle is respectively provided with a plug-in hole, and the other end of the first baffle and the second baffle is respectively fixed with a plug-in rod, and the plug-in rod is coaxially arranged with the corresponding plug-in hole.

[0008] In order to improve the positioning effect, further, a positioning block is fixedly provided on the plug-in rod, and the positioning block matches the plug-in hole.

[0009] In order to improve the connection strength between the plug rod and the plug hole, further, the first baffle plate and the second baffle plate inner wall are respectively provided with a channel, and one end of the channel is connected to the plug hole.

[0010] Preferably, the height range of the first baffle and the second baffle is: 0.3m-1m.

[0011] Preferably, a first connecting groove is formed on the well wall, a second connecting groove is formed on the first baffle plate, and an inner wall of the first connecting groove abuts against an inner wall of the second connecting groove.

[0012] Preferably, the first baffle and the second baffle are both in an arc-shaped structure.

[0013] Preferably, the outer wall radius of the first baffle is equal to the inner wall radius of the well wall.

[0014] Preferably, the outer wall radius of the second baffle is equal to the outer wall radius of the well wall.

[0015] Preferably, the plug holes are symmetrically arranged in two groups.

[0016] In order to facilitate the overlapping use of the first baffle and the second baffle, preferably, one end of the first baffle and the second baffle is respectively provided with a plug-in hole, and the other end of the first baffle and the second baffle is respectively fixed with a plug-in rod, and the plug-in rod is coaxially arranged with the corresponding plug-in hole.

[0017] In order to improve the positioning effect, further, a positioning block is fixedly provided on the plug-in rod, and the positioning block matches the plug-in hole.

[0018] In order to improve the connection strength between the plug rod and the plug hole, further, the first baffle plate and the second baffle plate inner wall are respectively provided with a channel, and one end of the channel is connected to the plug hole.

[0019] Preferably, the height range of the first baffle and the second baffle is: 0.3m-1m.

[0020] Preferably, a first connecting groove is formed on the well wall, a second connecting groove is formed on the first baffle plate, and an inner wall of the first connecting groove abuts against an inner wall of the second connecting groove.

[0021] Compared with the prior art, the utility model provides a closed caisson after leaving a groove for a transverse pipeline, which has the following beneficial effects:

[0022] 1. After the pipeline is grooved, the caisson is closed. By respectively arranging the first baffle and the second baffle on both sides of the groove, the soil can be reduced from entering the groove, the cleaning difficulty can be reduced, the soil can be prevented from affecting the welding effect, resulting in a decrease in welding strength, and the pouring quality of concrete can be improved;

[0023] 2. After the trench is left for the cross-pipeline, the caisson is closed. By stacking the first baffle and the second baffle, both sides of the trench can be completely covered. On the one hand, the time for setting up the formwork can be reduced, which is convenient for pouring the trench and improves the pouring efficiency. On the other hand, as the well wall settles, the amount of soil entering the trench can be reduced, thereby improving the use effect.

[0024] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can reduce the entry of mud into the groove and reduce the difficulty of cleaning by arranging the first baffle and the second baffle on both sides of the groove respectively. It can also avoid the mud from affecting the welding effect and causing the welding strength to be reduced, and can also improve the pouring quality of concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of a closed caisson wall after leaving a groove for a transverse pipeline proposed by the utility model;

[0026] Figure 2 This is a schematic structural diagram of a first baffle and a second baffle for closing a caisson after leaving a groove for a transverse pipeline proposed by the utility model;

[0027] Figure 3 This is a cross-sectional view of a closed caisson after leaving a groove for a transverse pipeline proposed by the utility model;

[0028] Figure 4 The utility model provides a closed caisson after leaving a groove for a transverse pipeline. Figure 3 Enlarged view of part A.

[0029] In the figure: 1, foundation pit; 101, pipeline body; 102, blade foot; 103, water-stop curtain; 2, well wall; 201, notch; 202, first connecting groove; 3, first baffle; 301, second baffle; 302, connecting rod; 303, positioning block; 304, plug-in rod; 305, plug-in hole; 306, channel. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Example:

[0033] Reference Figure 1-Figure 4A closed caisson after leaving a groove for a transverse pipeline comprises a pipeline body 101 and a foundation pit 1 located below the pipeline body 101. The pipeline body 101 is towed by a Bailey beam. The static distance between the bottom plane of the foundation pit 1 and the pipeline body 101 is 2.0m to 2.5m, preferably 2.5m. A water-stop curtain 103 is arranged in the foundation pit 1. The water-stop curtain 103 is composed of adjacently connected mixing piles. The diameter of the mixing piles is larger than the width of the existing pipeline body 101 and the Bailey beam. An I-beam is arranged on the vertical axis of the mixing piles. The bottom depth of the water-stop curtain 103 exceeds the design depth of the caisson by 2.5m to 3.0m, and A blade foot 102 is provided in the foundation pit 1, and the blade foot 102 is cast with concrete, with a height range of 1.5m-2m, preferably 1.5m, and also includes: a well wall 2 symmetrically arranged on the blade foot 102, symmetrical about the pipeline body 101, the well wall 2 is an arc-shaped structure, and transverse reinforcement is fixedly arranged at the notches 201 of the two groups of well walls 2. The two groups of well walls 2 can be connected by welding the middle reinforcement, and the connecting rod 302 can be welded to the middle reinforcement. A notch 201 is formed between the two groups of well walls 2, and the width of the notch 201 is greater than the width of the pipeline body 101 and the Bailey beam; respectively used to block the groove The first baffle 3 and the second baffle 301 on both sides of the opening 201 have a T-shaped cross section, and the height range of the first baffle 3 and the second baffle 301 is: 0.3m-1m, preferably 1m, the static distance between the bottom plane and the pipeline body 101 is 2.5m, and the height of the blade foot 102 is 1.5m, so the first baffle 3 and the second baffle 301 can be directly transferred to the foundation pit 1 and installed at the notch 201 in the foundation pit 1. The first baffle 3 and the second baffle 301 will not interfere with the pipeline body 101. After the well wall 2 drops to a certain depth, generally less than 1m, the other baffle 3 and the second baffle 301 can be installed. An outer group of first baffles 3 and second baffles 301 are superimposed on the top of the current first baffles 3 and second baffles 301 for use, the second baffle 301 is used to block the outer side of the slot 201, and the first baffle 3 is used to block the inner side of the slot 201, wherein the first baffle 3 is fixedly connected to the second baffle 301 through a connecting rod 302, and the connecting rod 302 is provided with multiple groups, from two to six groups, preferably four groups, the first baffle 3 and the second baffle 301 are both in an arc structure, and the outer wall radius of the first baffle 3 is equal to the inner wall radius of the well wall 2, and the outer wall radius of the second baffle 301 is equal to the outer wall radius of the well wall 2.

[0034] When in use, by respectively arranging the first baffle 3 and the second baffle 301 on both sides of the slot 201, it is possible to reduce the amount of mud entering the slot 201, thereby reducing the difficulty of cleaning, and preventing the mud from affecting the welding effect, thereby reducing the welding strength, and further improving the pouring quality of concrete; by stacking the first baffle 3 and the second baffle 301, it is possible to completely cover both sides of the slot 201. On the one hand, it is possible to reduce the time for setting up the formwork, facilitate pouring the slot 201, and improve the pouring efficiency; on the other hand, as the well wall 2 settles, it is possible to reduce the amount of mud entering the slot 201, thereby improving the use effect.

[0035] Reference Figure 2 , plug holes 305 are respectively provided at one end of the first baffle plate 3 and the second baffle plate 301, and plug rods 304 are fixedly arranged at the other ends of the first baffle plate 3 and the second baffle plate 301, and the plug rods 304 are coaxially arranged with the corresponding plug holes 305, and the plug holes 305 are symmetrically arranged in two groups, and the plug rods 304 correspond to the plug holes 305. When in use, the plug holes 305 are provided on the first baffle plate 3 and the second baffle plate 301, and the plug rods 304 are fixedly arranged at the other end, so that the first baffle plate 3 and the second baffle plate 301 can be stacked for use conveniently, thereby improving the use effect, and when the blade foot 102 is cast, the plug rods 304 on the bottom first baffle plate 3 and the second baffle plate 301 are cast together on the blade foot 102, so that the bottom first baffle plate 3 and the second baffle plate 301 are fixed on the blade foot 102, so that the subsequent stacking of the first baffle plate 3 and the second baffle plate 301 is convenient, thereby improving the connection effect.

[0036] Reference Figure 2 A positioning block 303 is fixedly provided on one end of the plug-in rod 304 away from the first baffle 3 and the second baffle 301 respectively, and the positioning block 303 is matched with the plug-in hole 305. When in use, by fixing the positioning block 303 on the plug-in rod 304, the connection effect of the upper and lower baffles can be improved and the verticality can be ensured.

[0037] Reference Figure 1 , Figure 2 and Figure 4 A channel 306 is respectively provided on the inner wall of the first baffle plate 3 and the second baffle plate 301, and one end of the channel 306 is connected to the plug hole 305. The channel 306 is provided in multiple groups, two to four groups, preferably two groups. When in use, when pouring the notch 201, concrete can enter the plug hole 305 through the channel 306, fix the plug rod 304 in the current plug hole 305, and improve the connection strength.

[0038] Reference Figure 1 and Figure 2A first connecting groove 202 is opened on the well wall 2, and a second connecting groove is opened on the first baffle plate 3. The inner wall of the first connecting groove 202 is abutted against the inner wall of the second connecting groove. When in use, the first connecting groove 202 is opened on the well wall 2, and the second connecting groove is opened on the first baffle plate 3, which facilitates the installation of the first baffle plate 3 and improves the use effect.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A closed caisson after leaving a groove for a transverse pipeline, comprising a pipeline body (101) and a foundation pit (1) located below the pipeline body (101), wherein a water-stop curtain (103) is arranged in the foundation pit (1), and a blade foot (102) is arranged in the foundation pit (1), characterized in that: Also includes: Well walls (2) are symmetrically arranged on the blade feet (102), a notch (201) is formed between two groups of the well walls (2), and the width of the notch (201) is greater than the width of the pipeline body (101); A first baffle (3) and a second baffle (301) respectively used to shield two sides of the notch (201), The first baffle (3) is fixedly connected to the second baffle (301) via a connecting rod (302); the first baffle (3) and the second baffle (301) are both arc-shaped structures; and the outer wall radius of the first baffle (3) is equal to the inner wall radius of the well wall (2).

2. The closed caisson after leaving a groove for a transverse pipeline according to claim 1 is characterized in that: One end of the first baffle plate (3) and the second baffle plate (301) is respectively provided with a plug-in hole (305), and the other end of the first baffle plate (3) and the second baffle plate (301) is respectively fixedly provided with a plug-in rod (304), and the plug-in rod (304) is coaxially arranged with the corresponding plug-in hole (305).

3. The closed caisson after leaving a groove for a transverse pipeline according to claim 2 is characterized in that: A positioning block (303) is fixedly arranged on the plug-in rod (304), and the positioning block (303) matches the plug-in hole (305).

4. The closed caisson after leaving a groove for a transverse pipeline according to claim 3 is characterized in that: The inner walls of the first baffle plate (3) and the second baffle plate (301) are respectively provided with channels (306), and one end of the channel (306) is connected to the plug hole (305).

5. The closed caisson after leaving a groove for a transverse pipeline according to claim 1 is characterized in that: The height range of the first baffle (3) and the second baffle (301) is 0.3m-1m.

6. The closed caisson after leaving a groove for a transverse pipeline according to claim 1 is characterized in that: A first connecting groove (202) is provided on the well wall (2), a second connecting groove is provided on the first baffle (3), and the inner wall of the first connecting groove (202) abuts against the inner wall of the second connecting groove.

7. The closed caisson after leaving a groove for a transverse pipeline according to claim 1 is characterized in that: The first baffle (3) and the second baffle (301) are both in an arc-shaped structure.

8. The closed caisson after leaving a groove for a transverse pipeline according to claim 7 is characterized in that: The radius of the outer wall of the first baffle (3) is equal to the radius of the inner wall of the well wall (2).

9. The closed caisson after leaving a groove for a transverse pipeline according to claim 7 is characterized in that: The outer wall radius of the second baffle (301) is equal to the outer wall radius of the well wall (2).

10. The closed caisson after leaving a groove for a transverse pipeline according to claim 2, characterized in that: The plug holes (305) are symmetrically arranged in two groups.

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