Post-cast strip drainage structure

Abstract

The utility model relates to a post-cast strip drainage structure, and belongs to the technical field of post-cast strip construction, the post-cast strip drainage structure comprises a drainage pipe, a transition pipe, a broken stone hardcore and a waterproof layer which are arranged in a post-cast strip, the drainage pipe is arranged in the length direction of the post-cast strip, and the drainage pipe is fixedly arranged on a post-cast strip bottom layer steel bar; the transition pipe is communicated with the drainage pipe and extends into the water collecting well, the broken stone hardcore is laid at the bottom of the post-cast strip and used for burying the drainage pipe, a plurality of water diversion holes are formed in the drainage pipe, and leakage water permeating into the broken stone hardcore enters the drainage pipe through the water diversion holes, then enters the transition pipe and is collected into the water collecting well. The waterproof layer is laid on the top of the broken stone hardcore so as to separate the poured concrete from the broken stone hardcore; the bottom of the transition pipe protrudes downwards and outwards to form a drainage groove, the drainage groove is used for outputting gravel in the transition pipe, and the drainage groove is formed in the length direction of the transition pipe. The method has the advantage of improving the anti-seepage effect of the post-cast strip.

Description

Technical Field

[0001] This application relates to the field of post-cast strip construction technology, and in particular to a post-cast strip drainage structure. Background Technology

[0002] A post-cast strip is a temporary expansion joint retained during construction in a cast-in-place reinforced concrete structure to accommodate temperature, shrinkage, and settlement. Depending on the specific construction conditions, this joint is left in place for a certain period before being filled and compacted with concrete to create a continuous, monolithic structure free from expansion and contraction. The installation of post-cast strips effectively eliminates additional stress caused by deformation of structural members or uneven settlement of the foundation, effectively reducing or preventing the development and propagation of cracks, and is highly beneficial for waterproofing foundations and basements.

[0003] However, leakage in the post-pouring strip of the base slab is also a rather tricky problem. First, leakage in the post-pouring strip will affect the subsequent floor construction and affect the project progress. Second, it will increase construction costs, including grouting repair of the leakage points and secondary rework of the floor caused by leakage. Utility Model Content

[0004] To improve the seepage prevention effect of post-cast strips, this application provides a drainage structure for post-cast strips.

[0005] A drainage structure for a post-cast strip includes a drainage pipe, a transition pipe, a gravel cushion layer, and a waterproof layer disposed within the post-cast strip. The drainage pipe is arranged along the length of the post-cast strip and is fixedly mounted on the bottom reinforcing steel of the post-cast strip. The transition pipe communicates with the drainage pipe and extends into a collection well. The gravel cushion layer is laid at the bottom of the post-cast strip and buries the drainage pipe. The drainage pipe has multiple water inlet holes. Leakage water that has seeped into the gravel cushion layer enters the drainage pipe through the water inlet holes, then enters the transition pipe, and finally collects in the collection well. The waterproof layer is laid on top of the gravel cushion layer to separate the poured concrete from the gravel cushion layer. The bottom of the transition pipe has a downwardly protruding drainage channel for discharging sand and gravel from the transition pipe. The drainage channel is located along the length of the transition pipe.

[0006] Optionally, a waterstop is provided at the connection joint between the post-pouring strip and the main building, with the two sides of the waterstop located within the main building and the post-pouring strip, respectively.

[0007] Optionally, the water inlet holes are arranged in a plum blossom pattern on the water inlet pipe, and the plum blossom pattern of water inlet holes is evenly arranged along the length direction of the inlet pipe.

[0008] Optionally, an alkali-resistant fiberglass mesh is provided on the outside of the drainage tube, and the alkali-resistant fiberglass mesh wraps around the drainage tube and is fixedly installed on the drainage tube.

[0009] Optionally, the connecting section between the transition pipe and the drainage pipe is higher than the outlet end of the transition pipe.

[0010] Optionally, a suction fan is installed inside the transition pipe. The suction fan is used to draw air from the transition pipe and draw in seepage water from the drainage pipe to accelerate its entry into the water collection well.

[0011] Optionally, the outlet end of the transition pipe is provided with an opening and closing device for opening and closing the transition pipe. A circulation pipe is provided between the opening and closing device and the suction fan. One end of the circulation pipe is connected to the transition pipe, and the other end is connected to the adjacent transition pipe. After the opening and closing device closes the transition pipe, the suction fan is started. The suction fan draws in air and introduces it into the circulation pipe and the adjacent transition pipe, and then into the drainage pipe from the transition pipe to dry the gravel cushion layer.

[0012] Optionally, the connecting section between the circulation pipe and the transition pipe is located on the side of the transition pipe.

[0013] Optionally, the opening and closing component includes a sealing plate hinged to the end face of the transition pipe, the hinge axis of the sealing plate being perpendicular to the axial direction of the transition pipe. The sealing plate rotates and fits against the end face of the transition pipe to close the transition pipe. A rubber plate is provided on the end face of the sealing plate facing the transition pipe. The rubber plate is used to enter the transition pipe and seal the outlet of the transition pipe. The opening and closing component also includes a motor provided on the transition pipe for driving the sealing plate to rotate.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. After the post-cast strip backpack structure is completed in stages, the drainage pipe is fixed below the bottom reinforcement and a transition pipe leading to the sump is pre-embedded to form a smooth drainage channel. When leakage occurs in the post-cast strip, the leakage water can be quickly discharged to the sump through the drainage pipe to avoid adverse effects on subsequent construction and building structure.

[0016] 2. The crushed stone cushion layer can collect and filter seepage water, making it easier to collect the seepage water into the drainage pipe and thus facilitate the drainage of the seepage water; at the same time, the crushed stone cushion layer filters the seepage water, reducing the possibility of blockage in the drainage pipe and transition pipe; while the waterproof layer can effectively isolate concrete slurry, reducing the possibility of concrete slurry entering the crushed stone cushion layer, thus ensuring the unobstructed flow of the drainage pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a post-cast strip drainage structure according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the transition pipe structure in a post-cast strip drainage structure according to an embodiment of this application;

[0019] Figure 3This is a schematic diagram of the drying and air circulation of the crushed stone cushion layer in a post-cast strip drainage structure according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached diagram: 1. Drainage pipe; 2. Transition pipe; 3. Crushed stone cushion layer; 4. Waterproof layer; 5. Waterstop strip; 6. Fan; 7. Circulation pipe; 8. Sealing plate; 9. Rubber sheet; 10. Motor; 11. Post-pouring strip. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0022] This application discloses a drainage structure for post-cast strips. (Refer to...) Figure 1 A drainage structure for a post-cast strip includes a drainage pipe 1, a transition pipe 2, a gravel cushion layer 3, and a waterproof layer 4 installed in the post-cast strip 11. The drainage pipe 1 is arranged along the length of the post-cast strip 11 and is fixedly installed on the bottom reinforcement of the post-cast strip 11. The transition pipe 2 is connected to the drainage pipe 1 and extends into the collection well. The gravel cushion layer 3 is laid at the bottom of the post-cast strip 11 and buries the drainage pipe 1. The thickness of the gravel cushion layer 3 is greater than 30mm.

[0023] Reference Figure 1 The drainage pipe 1 has multiple water inlet holes. The seepage water that has penetrated into the crushed stone cushion layer 3 enters the drainage pipe 1 through the water inlet holes, then enters the transition pipe 2, and then collects into the collection well. The waterproof layer 4 is laid on top of the crushed stone cushion layer 3 to separate the poured concrete from the crushed stone cushion layer 3. The waterproof layer 4 is a geotextile isolation layer.

[0024] The bottom of the transition pipe is convex downwards and has a drainage groove, which is used to discharge the sand and gravel inside the transition pipe. The drainage groove is opened along the length of the transition pipe.

[0025] After the post-cast strip 11 backpack structure is completed in stages, the drainage pipe 1 is fixed below the bottom reinforcement and a transition pipe 2 leading to the sump is pre-embedded, forming a smooth drainage channel. When leakage occurs in the post-cast strip 11, the leaked water seeps into the crushed stone cushion layer 3, permeates through the water inlet holes into the water inlet pipe, and then is quickly discharged to the sump through the drainage pipe 1, avoiding adverse effects on subsequent construction and building structure. Under the action of the crushed stone cushion layer 3, the leaked water is collected and filtered, making it easier to collect the leaked water into the drainage pipe 1, thus facilitating the discharge of the leaked water. At the same time, the crushed stone cushion layer 3 filters the leaked water, reducing the possibility of blockage in the drainage pipe 1 and the transition pipe 2. The waterproof layer 4 can effectively isolate the concrete slurry, reducing the possibility of the concrete slurry entering the crushed stone cushion layer 3, and ensuring that the drainage pipe 1 is unobstructed.

[0026] Reference Figure 1To improve the seepage prevention effect of the post-pouring strip 11, a waterstop 5 is installed at the connection joint between the post-pouring strip 11 and the main building. The two sides of the waterstop 5 are located inside the main building and the post-pouring strip 11, respectively. Under the action of the waterstop 5, the connection joint between the post-pouring strip 11 and the main building is horizontally separated, thereby reducing the possibility of leakage water above the waterstop 5 seeping into the interior of the post-pouring strip 11 through the connection joint, thus improving the seepage prevention effect of the post-pouring strip 11.

[0027] Reference Figure 1 In this embodiment, the water inlet holes are arranged in a plum blossom pattern on the water inlet pipe, and the plum blossom pattern of water inlet holes is evenly arranged along the length direction of the drainage pipe 1; the plum blossom pattern of water inlet holes increases the drainage area and efficiency of the water inlet pipe, thereby facilitating the rapid discharge of seepage water in the post-pouring strip 11.

[0028] Reference Figure 1 In this embodiment, an alkali-resistant fiberglass mesh is provided on the outside of the drainage pipe 1. The alkali-resistant fiberglass mesh wraps around the drainage pipe 1 and is fixedly installed on the drainage pipe 1. Under the action of the alkali-resistant fiberglass mesh, the water inlet is blocked, reducing the possibility of gravel entering the water pipe through the water inlet, and reducing the possibility of blockage of the water pipe and the transition pipe 2. Moreover, after the alkali-resistant fiberglass mesh is firmly tied, the strength and durability of the drainage pipe 1 are improved, and the possibility of damage to the water pipe during construction is reduced.

[0029] Reference Figure 1 To facilitate the rapid discharge of leaked water from the water inlet pipe through the transition pipe 2, the connecting section between the transition pipe 2 and the water outlet pipe 1 is higher than the outlet end of the transition pipe 2; the leaked water is discharged rapidly along the inclined direction of the transition pipe, thereby accelerating the flow efficiency of the leaked water.

[0030] Reference Figure 2 To further accelerate the drainage efficiency of seepage water, a suction fan 6 is installed inside the transition pipe 2. The suction fan 6 is used to extract air from the transition pipe 2 and draw in seepage water from the drainage pipe 1 to accelerate its entry into the collection well. When seepage water flows out of the transition pipe 2, the suction fan 6 is activated. The suction fan 6 extracts air from the transition pipe 2 and discharges it. The discharged air exerts a pulling force on the seepage water, thus accelerating its drainage. At the same time, when the suction fan 6 extracts air, it removes moisture from the crushed stone cushion layer 3 from the drainage pipe 1 and the transition pipe 2, further improving the seepage prevention effect of the post-cast strip 11. Meanwhile, during the process of the suction fan 6 extracting air from the crushed stone cushion layer 3, the crushed stone cushion layer 3 is dried to improve its load-bearing capacity.

[0031] Reference Figure 2 and Figure 3To improve the drying effect of the suction fan 6 on the crushed stone cushion layer 3, an opening and closing device for opening and closing the transition pipe 2 is provided at the outlet end of the transition pipe 2. A circulation pipe 7 is provided between the opening and closing device and the suction fan 6. One end of the circulation pipe 7 is connected to the transition pipe 2, and the other end is connected to the adjacent transition pipe 2. Before drying the crushed stone cushion layer 3, the transition pipe 2 is closed by the opening and closing device, and then the suction fan 6 is started. The suction fan 6 draws in the air and introduces it into the circulation pipe 7 and the adjacent transition pipe 2. The air then enters the drainage pipe 1 from the transition pipe 2 and is discharged from the water inlet. The air used to dry the crushed stone cushion layer 3 is then guided by the suction fan 6 into the water inlet pipe and then returns to the transition pipe 2, thus forming a circulation and improving the drying effect of the crushed stone cushion layer 3.

[0032] Reference Figure 2 and Figure 3 In this embodiment, the opening and closing device includes a sealing plate 8 hinged to the end face of the transition pipe 2. The hinge axis of the sealing plate 8 is perpendicular to the axis of the transition pipe 2. The sealing plate 8 rotates and fits against the end face of the transition pipe 2 to close the transition pipe 2. A rubber plate 9 is provided on the end face of the sealing plate 8 facing the transition pipe 2. The rubber plate 9 is used to enter the transition pipe 2 and seal the outlet of the transition pipe 2. The opening and closing device also includes a motor 10 provided on the transition pipe 2 to drive the sealing plate 8 to rotate. When the transition pipe 2 is closed, the motor 10 is started, and the motor 10 drives the sealing plate 8 to rotate. The sealing plate 8 rotates towards the port of the transition pipe 2 and drives the sealing plate into the transition pipe 2, thereby sealing the transition pipe 2. The operation is simple and convenient.

[0033] Reference Figure 2 and Figure 3 To reduce leakage water from entering the circulation pipe 7 through the transition pipe 2, the connecting section between the circulation pipe 7 and the transition pipe 2 is located on the side of the transition pipe 2.

[0034] The implementation principle of a post-cast strip drainage structure in this application is as follows:

[0035] After the post-cast strip 11 backpack structure is completed in stages, the drainage pipe 1 is fixed below the bottom reinforcement and a transition pipe 2 leading to the sump is pre-embedded, forming a smooth drainage channel. When leakage occurs in the post-cast strip 11, the leaked water seeps into the crushed stone cushion layer 3, permeates through the water inlet holes into the water inlet pipe, and then is quickly discharged to the sump through the drainage pipe 1, avoiding adverse effects on subsequent construction and building structure. Under the action of the crushed stone cushion layer 3, the leaked water is collected and filtered, making it easier to collect the leaked water into the drainage pipe 1, thus facilitating the discharge of the leaked water. At the same time, the crushed stone cushion layer 3 filters the leaked water, reducing the possibility of blockage in the drainage pipe 1 and the transition pipe 2. The waterproof layer 4 can effectively isolate the concrete slurry, reducing the possibility of the concrete slurry entering the crushed stone cushion layer 3, and ensuring that the drainage pipe 1 is unobstructed.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A post-cast strip drainage structure, characterized in that: The system includes a drainage pipe (1), a transition pipe (2), a crushed stone cushion layer (3), and a waterproof layer (4) installed within the post-cast strip (11). The drainage pipe (1) is arranged along the length of the post-cast strip (11) and is fixedly installed on the bottom reinforcement of the post-cast strip (11). The transition pipe (2) is connected to the drainage pipe (1) and extends into the sump. The crushed stone cushion layer (3) is laid at the bottom of the post-cast strip (11) and buries the drainage pipe (1). Multiple water inlet holes are provided. Leakage water that has seeped into the crushed stone cushion layer (3) enters the drainage pipe (1) through the water inlet holes, then enters the transition pipe (2), and then collects in the collection well. The waterproof layer (4) is laid on top of the crushed stone cushion layer (3) to separate the poured concrete from the crushed stone cushion layer (3). The bottom of the transition pipe (2) is formed with a drainage groove protruding downwards. The drainage groove is used to output the sand and gravel in the transition pipe (2). The drainage groove is opened along the length of the transition pipe (2).

2. The drainage structure for post-cast strips according to claim 1, characterized in that: A waterstop (5) is provided at the connection joint between the post-pouring strip (11) and the main building body. The two sides of the waterstop (5) are located in the main building body and the post-pouring strip (11), respectively.

3. The post-cast strip drainage structure according to claim 1, characterized in that: The water inlet holes are arranged in a plum blossom pattern on the water inlet pipe, and the plum blossom pattern of water inlet holes is evenly arranged along the length direction of the inlet pipe (1).

4. The post-cast strip drainage structure according to claim 1, characterized in that: An alkali-resistant fiberglass mesh is provided on the outside of the drainage tube (1). The alkali-resistant fiberglass mesh wraps around the drainage tube (1) and is fixedly installed on the drainage tube (1).

5. The post-cast strip drainage structure according to claim 1, characterized in that: The connecting section between the transition pipe (2) and the drainage pipe (1) is higher than the outlet end of the transition pipe (2).

6. The post-cast strip drainage structure according to claim 1, characterized in that: A suction fan (6) is installed inside the transition pipe (2). The suction fan (6) is used to extract air from the transition pipe (2) and draw in seepage water from the drainage pipe (1) to accelerate its entry into the water collection well.

7. The post-cast strip drainage structure according to claim 6, characterized in that: The outlet end of the transition pipe (2) is provided with an opening and closing device for opening and closing the transition pipe (2). A circulation pipe (7) is provided between the opening and closing device and the suction fan (6). One end of the circulation pipe (7) is connected to the transition pipe (2), and the other end is connected to the adjacent transition pipe (2). After the opening and closing device closes the transition pipe (2), the suction fan (6) is started. The suction fan (6) draws in the air and introduces it into the circulation pipe (7), and into the adjacent transition pipe (2), and then into the drainage pipe (1) from the transition pipe (2) to dry the gravel cushion layer (3).

8. A post-cast strip drainage structure according to claim 7, characterized in that: The connecting section between the circulation pipe (7) and the transition pipe (2) is located on the side of the transition pipe (2).

9. A post-cast strip drainage structure according to claim 7, characterized in that: The opening and closing component includes a sealing plate (8) hinged to the end face of the transition pipe (2). The hinge axis of the sealing plate (8) is perpendicular to the axial direction of the transition pipe (2). The sealing plate (8) rotates and fits against the end face of the transition pipe (2) to close the transition pipe (2). A rubber plate (9) is provided on the end face of the sealing plate (8) facing the transition pipe (2). The rubber plate (9) is used to enter the transition pipe (2) and seal the outlet of the transition pipe (2). The opening and closing component also includes a motor (10) provided on the transition pipe (2) for driving the sealing plate (8) to rotate.

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