Drainage system around bearing platform and construction method of drainage system

Abstract

The drainage system comprises water collecting ditches formed in the periphery of the bearing platform, and the water collecting ditches are arranged on the bearing platform in an end-to-end surrounding mode; the water collecting device is used for collecting water in the water collecting gutter, the water collecting device is arranged in the water collecting gutter, and a water collecting opening communicated with the outside is formed in the water collecting device; the drainage device is used for pumping and draining water in the water collecting device and comprises a water pumping end and a drainage end, the water pumping end is communicated with the water collecting device, and the drainage end extends out of the ground elevation. The water collecting ditch is formed in the periphery of the bottom of the bearing platform to collect seepage water in peripheral cracks, the seepage water in the water collecting ditch is collected through the water collecting device, water in the water collecting device is discharged through the water discharging device, and water discharging of the periphery of the bottom of the bearing platform is achieved. And construction can be conducted together with a bearing platform, the construction process is simple, and an original natural foundation cannot be damaged.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a drainage system around a cap and a construction method thereof. Background Art

[0002] In some areas, there are irregularly distributed cracks in the weathered mudstone, and a large amount of water will be stored in the cracks after rain. If the cracks around the bottom of the pedestal continue to seep water outward, the bottom of the foundation pit pedestal will easily be soaked in water, making it impossible to carry out the construction of waterproof membrane laying. Summary of the invention

[0003] The present invention can collect seepage water around the foundation and discharge it in time, has a simple construction process and high drainage efficiency, and causes little damage to the original foundation.

[0004] The present invention provides a drainage system around a pedestal, comprising: a water collecting ditch arranged around the pedestal along the outer circumference of the pedestal in a foundation pit; a water collecting device for collecting water in the water collecting ditch, the water collecting device being arranged in the water collecting ditch, and a water collecting port connected with the water collecting ditch being arranged on the water collecting device; a drainage device for pumping out and discharging water in the water collecting device, the drainage device comprising a pumping end and a drainage end, the pumping end being connected with the water collecting device, and the drainage end extending above the ground elevation.

[0005] A further improvement of the present invention is that a first filtering device for filtering water in the water collecting ditch is provided at the water collecting port.

[0006] A further improvement of the present invention is that the water pumping end of the drainage device is provided with a second filtering device for filtering the water in the water collecting device.

[0007] A further improvement of the present invention is that the water collecting device includes a plurality of water collecting pipes connected end to end along the water collecting ditch, each water collecting pipe is evenly provided with at least one water collecting port, and the pumping end of the drainage device is connected to at least one water collecting pipe.

[0008] A further improvement of the present invention is that the drainage device includes a drainage pipe and a water pump, the drainage pipe is connected to the two water collecting pipes through a four-way sleeve, the four-way sleeve includes a vertical pipe and two horizontal pipes vertically connected to the vertical pipe and on the same horizontal plane, the two horizontal pipes are respectively connected to the two water collecting pipes; the upper end of the drainage pipe is not lower than the ground elevation, the lower part of the drainage pipe is passed through the vertical pipe and a connecting port connected to the two horizontal pipes is opened at a position corresponding to the two horizontal pipes, the lower end of the drainage pipe is closed and buried deep in the foundation pit soil, and the space below the connecting port in the drainage pipe forms a water accumulation space; the water pump is arranged in the drainage pipe, the water suction port of the water pump extends into the water accumulation space as the water suction end, and the water outlet of the water pump extends upward from the upper end of the drainage pipe as the drainage end.

[0009] A further improvement of the present invention is that a gravel layer is also laid in the water collection ditch, and the water collection device is buried in the gravel layer.

[0010] A construction method for constructing a drainage system around the cap comprises the following steps:

[0011] S1, excavating a circle of the water collection ditch along the outer periphery of the cap;

[0012] S2, placing the water collection device into the water collection ditch;

[0013] S3. Connect the drainage device to the water collecting device, and extend the drainage end of the water collecting device upward to above the ground level.

[0014] A further improvement of the present invention is that before the water collecting device is placed in the water collecting ditch, the water collecting ditch is first filled with gravel; after the water collecting device is placed in, the water collecting ditch is further filled with gravel until it is filled to the bottom elevation of the pedestal, and the top elevation of the water collecting device is lower than the bottom elevation of the pedestal.

[0015] The present invention arranges a water collecting ditch around the bottom of the pedestal to collect seepage water in the surrounding cracks, collects the seepage water in the water collecting ditch through a water collecting device, and discharges the water in the water collecting device through a drainage device to achieve drainage around the bottom of the pedestal. The present invention can timely eliminate the seepage water around the bottom of the pedestal, and can be constructed together with the pedestal. The construction process is simple and will not damage the original foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a cross-sectional view of the drainage system of the present invention;

[0017] Figure 2 A three-dimensional diagram of the drainage system of the present invention;

[0018] Figure 3 It is a schematic diagram of the drainage device and the water collection device of the present invention;

[0019] Figure 4 It is a schematic diagram of the connection between the drainage device and the water collection device of the present invention;

[0020] In the figure: 1. drainage device; 2. drainage ditch; 3. foundation pit; 101. drainage pipe; 102. four-way casing; 103. filter pipe; 104. drainage pipe; 105. connecting casing; 106. water collection port; 4. water pump; 5. natural foundation; 6. backfill soil; 107. filter cotton; 108. filter plate; 201. gravel; 202. fine mesh. DETAILED DESCRIPTION

[0021] like Figure 2 to Figure 4As shown, a drainage system around a pedestal comprises: a water collecting ditch 2 which is opened on the outer periphery of the pedestal and surrounds the pedestal; a water collecting device for collecting water in the water collecting ditch 2, the water collecting device is arranged in the water collecting ditch 2, and a water collecting port 106 which is connected with the external water collecting ditch 2 is opened on the water collecting device; a drainage device 1 which is used to pump out and discharge the water in the water collecting device, the drainage device 1 comprises a pumping end and a drainage end, the pumping end is connected with the water collecting device, and the drainage end extends out of the ground.

[0022] like Figure 1 As shown, a first filtering device for filtering water in the water collecting ditch 2 is provided at the water collecting port.

[0023] like Figure 1 As shown, the pumping end of the drainage device 1 is provided with a second filtering device for filtering the water in the water collecting device.

[0024] like Figure 2 to Figure 4 As shown, the water collecting device is a water collecting pipe 104 connected end to end. The shape and length of the water collecting pipe 104 are the same as those of the water collecting ditch 2. The water collecting pipe 104 is placed in the water collecting ditch 2 along the shape of the water collecting ditch 2.

[0025] Preferably, if Figure 1 and Figure 4 As shown, the water collection port 106 in this embodiment is a water collection hole, and a plurality of water collection holes are densely opened on the surface of the water collection pipe 104 to allow seepage water from various places to flow in.

[0026] In this embodiment, the water collecting ditch 2 is rectangular and surrounds the base. The distance between the water collecting ditch 2 and the base is maintained at more than 20 cm. The shape and size of the water collecting ditch 2 can be adaptively adjusted according to the size and shape of the base.

[0027] In this embodiment, Figure 1 to Figure 4 As shown, the drainage device 1 includes: a drainage pipe 101 and a water pump 4. The drainage pipe 101 is connected to two water collecting pipes 104 through a four-way sleeve 102. The four-way sleeve 102 includes a vertical pipe and two horizontal pipes vertically connected to the vertical pipe and on the same horizontal plane. The two horizontal pipes are respectively connected to the two water collecting pipes 104; the upper end of the drainage pipe 101 is not lower than the ground elevation, the lower part of the drainage pipe 101 is penetrated through the vertical pipe and a connecting port connected to the two horizontal pipes is opened at a position corresponding to the two horizontal pipes. The lower end of the drainage pipe 101 is closed and buried deep into the foundation pit soil. The space below the four-way sleeve 102 in the drainage pipe 101 forms a water accumulation space; the water pump 4 is arranged in the drainage pipe 101, and the water suction port of the water pump 4 extends into the water accumulation space as a water suction end, and the water outlet of the water pump 4 extends upward from the upper end of the drainage pipe 101 as a drainage end.

[0028] Preferably, the water collecting pipe 104 and the drainage pipe 101 in this embodiment are both PVC pipes.

[0029] In this embodiment, Figure 1 As shown, the first filtering device is a dense mesh net 202, which is wrapped around the outside of the water collecting pipe 104 and fastened by wire tying.

[0030] In this embodiment, Figure 1 As shown, the second filtering device includes a filter tube 103, which is fixed in two horizontal pipe openings of the four-way sleeve 102, one end of which is connected to the water collecting pipe 104, and the other end of which is connected to the water pumping pipe 101; filter cotton 107 filled in the filter tube 103; and a filter plate 108 fixed to one end of the filter cotton 107 close to the water pumping pipe 101. By arranging the first filtering device and the second filtering device, impurities such as sand and gravel in the seepage water can be effectively filtered, and the water collecting port 106, the water collecting pipe 104 and the water pumping pipe 101 can be effectively prevented from being blocked.

[0031] like Figure 1 to Figure 4 As shown, the construction method of the drainage system around the cap includes the following steps:

[0032] S1, dig a circle of drainage ditch 2 along the outer perimeter of the cap;

[0033] S2, placing the water collection device into the water collection ditch 2;

[0034] S3. Connect the drainage device 1 to the water collecting device, and extend the drainage end of the water collecting device upward to above the ground level.

[0035] In this embodiment, during construction, excavation is first performed to 20 cm above the bottom elevation of the cap, and then a 1:0.75 slope is placed around the periphery to form the cap pit 3, and then the bottom is manually cleared to the bottom elevation of the cap.

[0036] In this embodiment, when constructing the water collection ditch 2, a cylindrical pit is further excavated below the bottom elevation of the pedestal at the location where the drainage device 1 is to be constructed later, so as to provide a space for accumulating water.

[0037] like Figure 1 As shown, before placing the water collecting device into the water collecting ditch 2, the water collecting ditch 2 is first filled with gravel 201; after placing the water collecting device, the water collecting ditch 2 is again filled with gravel 201 until it is filled to the bottom elevation of the pedestal, and the top elevation of the water collecting device is lower than the bottom elevation of the pedestal.

[0038] like Figure 1 As shown, in this embodiment, the bottom of the pedestal is located at the natural foundation 5, and the drainage ditch 2 is also opened on the natural foundation 5. The present invention only needs to open the drainage ditch 2 on the natural foundation 5, which causes less damage to the natural foundation 5 than the drainage pit or precipitation well in the traditional technology.

[0039] When the present invention is in use, the seepage water in the soil around the pedestal will flow into the water collection port 106 to enter the water collection pipe 104. When the water level in the water collection pipe 104 rises, the water level in the water accumulation space connected thereto will also rise. When the water level in the water accumulation space rises to a preset height, the water pump 4 in the drainage pipe 101 can be turned on to pump the seepage water out of the ground. In this embodiment, in order to prevent the bottom of the foundation pit pedestal from being soaked in water, the preset height is set to be the same as the elevation of the bottom of the pedestal. When the seepage water level reaches the elevation of the bottom of the pedestal, the water pump 4 can be turned on to pump water. In actual use, the preset height can be customized according to the usage scenario, such as Figure 1 As shown, after the drainage system and the foundation are constructed and the drainage is completed, a waterproof layer is constructed at the bottom of the foundation, and after the construction is completed, backfill soil 6 is filled above the drainage system and the foundation until the ground level.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drainage system around a cap, the cap being located in a foundation pit, characterized in that: include: A water collection ditch is provided in the foundation pit along the outer periphery of the cap and surrounds the cap; A water collecting device for collecting water in the water collecting ditch, the water collecting device is arranged in the water collecting ditch, and a water collecting port connected with the water collecting ditch is opened on the water collecting device; a drainage device for pumping out and discharging the water in the water collecting device, the drainage device includes a pumping end and a drainage end, the pumping end is connected to the water collecting device, and the drainage end extends above the ground elevation.

2. The drainage system around the platform as claimed in claim 1, characterized in that: The water collection port is provided with a first filtering device for filtering water in the water collection ditch.

3. The drainage system around the platform as claimed in claim 1, characterized in that: The water pumping end of the drainage device is provided with a second filtering device for filtering the water in the water collecting device.

4. The drainage system around the platform as claimed in claim 1, characterized in that: The water collecting device comprises a plurality of water collecting pipes connected end to end along the water collecting ditch, each of the water collecting pipes is evenly provided with at least one water collecting port, and the water pumping end of the drainage device is connected to at least one of the water collecting pipes.

5. The drainage system around the platform as claimed in claim 4, characterized in that: The drainage device includes a drainage pipe and a water pump. The drainage pipe is connected to the two water collecting pipes through a four-way sleeve. The four-way sleeve includes a vertical pipe and two horizontal pipes vertically connected to the vertical pipe and on the same horizontal plane. The two horizontal pipes are respectively connected to the two water collecting pipes. The upper end of the drainage pipe is not lower than the ground elevation. The lower part of the drainage pipe is passed through the vertical pipe and a connecting port connected to the two horizontal pipes is opened at a position corresponding to the two horizontal pipes. The lower end of the drainage pipe is closed and buried deep in the foundation pit soil. The space below the connecting port in the drainage pipe forms a water accumulation space. The water pump is arranged in the drainage pipe, and the water suction port of the water pump extends into the water accumulation space as the water suction end, and the water outlet of the water pump extends upward from the upper end of the drainage pipe as the drainage end.

6. The drainage system around the platform as claimed in claim 1, characterized in that: A gravel layer is also laid in the water collection ditch, and the water collection device is buried in the gravel layer.

7. A construction method for constructing a drainage system around a cap according to claim 1, characterized in that: The following steps are involved: S1. Dig a circle of the water collection ditch along the outer periphery of the cap; S2, placing the water collection device into the water collection ditch; S3. Connect the drainage device to the water collecting device, and extend the drainage end of the water collecting device upward to above the ground level.

8. The construction method of the drainage system around the platform as claimed in claim 7, characterized in that: Before placing the water collecting device into the water collecting ditch, the water collecting ditch is first filled with gravel; after placing the water collecting device, the water collecting ditch is further filled with gravel until it is filled to the bottom elevation of the pedestal, and the top elevation of the water collecting device is lower than the bottom elevation of the pedestal.

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