Foundation pit structure and construction method thereof

Abstract

This application relates to a foundation pit structure and its construction method, comprising a foundation pit main body with a support structure installed. The support structure includes a reinforcement component and a drainage component. The drainage component is installed on the reinforcement component and includes a fall arrest net and a drainage pipe. The drainage pipe is installed inside the reinforcement component. One side of the fall arrest net is connected to the reinforcement component. The fall arrest net has multiple water storage channels inside. The bottom of the fall arrest net is in contact with the bottom of the foundation pit main body. The bottom of the fall arrest net is provided with a water-absorbing fixing component, which is driven into the bottom of the foundation pit main body. The reinforcement component includes corner reinforcement components and vertical reinforcement components. The corner reinforcement components are fixed at the corners of the foundation pit main body and fit against the corner walls of the foundation pit main body. The vertical reinforcement components are connected to the corner reinforcement components. The foundation pit structure of this application is robust, less prone to lateral collapse, and facilitates drainage.

Description

Technical Field

[0001] This application relates to the field of foundation pit technology, and in particular to a foundation pit structure and its construction method. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plan dimensions. Before excavation, an excavation plan should be determined based on geological and hydrological data and the condition of nearby buildings, and waterproofing and drainage work should be carried out. For shallow excavations, slope protection can be used to stabilize the soil slope, and the slope should be determined according to relevant construction regulations. For deeper excavations or those near buildings, excavation pit wall support methods, shotcrete wall protection methods, and even methods such as diaphragm walls and interlocking column-type bored piles can be used to prevent the outer soil layer from collapsing. For excavations without the influence of nearby buildings, the wellpoint method can be used to lower the groundwater level, and open excavation with slope protection can be adopted. In cold regions, natural freezing methods can be used for excavation, etc.

[0003] Currently, in related technologies, supported foundation pits are often required in the following three situations, as detailed below:

[0004] 1. The soil of the foundation pit wall is unstable and is affected by groundwater.

[0005] 2. The amount of earthwork excavation for slope protection is too large and uneconomical.

[0006] 3. It is easily restricted by the construction site or nearby buildings, and slope excavation cannot be used.

[0007] However, external rainwater and groundwater have a significant impact on the foundation pit, often resulting in water accumulation within it. The presence of this water adversely affects construction within the foundation pit and may even cause it to collapse. Currently, the support structures in related technologies cannot remove the water from the foundation pit.

[0008] Regarding the aforementioned technologies, the inventors believe that the support structure inside the foundation pit cannot effectively cope with the disadvantage of water inside the foundation pit. Summary of the Invention

[0009] In order to provide support for the foundation pit and to drain any water that may be present in the pit, this application provides a foundation pit structure and its construction method.

[0010] The technical solution for the foundation pit structure and its construction method provided in this application is as follows:

[0011] A foundation pit structure includes a foundation pit body with a support structure installed. The support structure includes a reinforcement component and a drainage component. The drainage component is installed on the reinforcement component and includes a fall arrest net and a drainage pipe. The drainage pipe is installed inside the reinforcement component. One side of the fall arrest net is connected to the reinforcement component. Multiple water storage channels are provided inside the fall arrest net. The bottom of the fall arrest net is in contact with the bottom of the foundation pit body. A water-absorbing fixing component is provided at the bottom of the fall arrest net and is driven into the bottom of the foundation pit body.

[0012] By adopting the above technical solution, the foundation pit of this application is equipped with reinforcement components and drainage components. The reinforcement components are used to reinforce the pit walls, etc., and the drainage components are used to drain the water in the foundation pit. The fall protection net on the drainage components mainly serves to add fall protection for workers. In addition, a water storage channel is set inside the fall protection net. The water storage channel can accumulate external water. After the water is stored inside the fall protection net, it can increase the weight of the fall protection net, so that the fall protection net firmly presses down on the side wall of the foundation pit, further reinforcing the side wall of the foundation pit.

[0013] Preferably, the reinforcement component includes a corner reinforcement component and a vertical reinforcement component. The corner reinforcement component is fixed at the corner of the foundation pit body and fits against the corner wall of the foundation pit body. The vertical reinforcement component is connected to the corner reinforcement component.

[0014] By adopting the above technical solution, the corner reinforcement component on the reinforcement assembly is set at the corner of the foundation pit body and fixed in place, which is used to reinforce and protect the corner position of the foundation pit; the vertical reinforcement component is used to play a vertical reinforcement role.

[0015] Preferably, the vertical reinforcement component is located on one side of the corner reinforcement component. The vertical reinforcement component includes a support plate and a support block fixed to the bottom of the pit body. The support block is installed on one side of the support plate by thread engagement and is connected to the side wall of the pit. An installation channel is provided in the support plate, and a drainage pipe is arranged in the installation channel.

[0016] By adopting the above technical solution, the support plate of the vertical reinforcement component is fixed to the ground, while the support block is inserted into the side wall of the pit to reinforce the side wall.

[0017] Preferably, the corner reinforcement component includes a corner reinforcement plate fixed to the bottom of the pit body and a climbing pole for climbing. The climbing pole is fixed to the corner reinforcement plate, and the corner reinforcement plate is attached to the corner wall of the pit body. An opening is provided in the fall arrestor net, and the opening is aligned with the corner reinforcement component.

[0018] By adopting the above technical solution, the climbing pole is used for workers to climb up and down in the foundation pit, and the opening in the fall protection net ensures that the fall protection net will not block the climbing pole.

[0019] Preferably, the drain pipe includes a water storage chamber and a drain channel from the outside to the inside. Both ends of the drain channel are connected to the external environment, and the top of the water storage chamber is connected to the external environment.

[0020] By adopting the above technical solution, the drainage channel of the drainage pipe can be used to pump out the water in the foundation pit; while the water storage channel is used to collect rainwater from the outside.

[0021] Preferably, the fall protection net is made of anti-aging adhesive material, and the fall protection net is provided with water inlet holes for communication with the water storage channel. The fall protection net covers the reinforcement components and extends to the outside of the foundation pit body and is fixed to the ground.

[0022] By adopting the above technical solutions, the fall protection net shields the area near the pit wall, increasing the fall protection for workers and enhancing the safety of pit construction.

[0023] Preferably, the fastener includes a fixing part and a water-absorbing part, one end of the fixing part is connected to the fall protection net, and the water-absorbing part is installed inside the fixing part.

[0024] By adopting the above technical solution, the fastener is used to position and fix the bottom of the fall protection net.

[0025] Preferably, the bottom of the fixing part is formed with a conical surface, and a connecting channel is provided inside the fixing part. The water-absorbing part is fixed in the installation channel and penetrates the fixing part.

[0026] By adopting the above technical solution, the conical surface facilitates the installation of the fixing part into the bottom of the foundation pit. After the fixing part is installed into the bottom of the foundation pit, the water absorption part is also located in the bottom of the foundation pit. If groundwater seeps out from the bottom of the pit, the groundwater can be treated through the water absorption part, reducing the adverse effects of groundwater on the bottom of the foundation pit.

[0027] The fall-prevention net has a water-absorbing channel that is not connected to the water storage channel. One end of the water-absorbing part is inserted into the water-absorbing channel. The water-absorbing part includes a water-absorbing strip and a heat-conducting component. The water-absorbing strip has an internal channel. The heat-conducting component includes an electric heating wire, a heat insulation sleeve, and a heat-conducting sheet. The heat insulation sleeve is fixed to the water-absorbing strip, and the heat-conducting sheet is fixed to the heat insulation sleeve. The electric heating wire is inserted into the internal channel from the outside, and the heat generated by the electric heating wire is used to heat the heat-conducting sheet.

[0028] By adopting the above technical solution, the electric heating wire is connected to an external power source. When the electric heating wire is in working condition, the heat it generates acts on the water absorption channel and is absorbed by the heat-conducting plate in the water absorption channel, causing the heat of the heat-conducting plate to rise. The heat then acts on the bottom of the pit along with the water absorption strip, which helps to keep the bottom of the pit dry.

[0029] The construction steps for the foundation pit structure are as follows:

[0030] S1. First, excavate the main body of the foundation pit, and then install the support components inside the main body of the foundation pit;

[0031] S2. Install the corner reinforcement component of the support assembly at the corner of the foundation pit. After the corner reinforcement plate of the corner reinforcement component is set at the corner, drive the fixing parts into the pit wall of the foundation pit body.

[0032] S3. Install the vertical reinforcement components at the bottom of the foundation pit body;

[0033] S4. Install the fall protection net. After connecting the fall protection net to the support block, rotate the support block and insert it into the pit wall. Install the fixing part at the bottom of the fall protection net into the bottom of the pit body and fix it.

[0034] In summary, this application includes at least one of the following beneficial technical effects:

[0035] 1. The foundation pit structure of this application is provided with a support structure. The support and reinforcement include a reinforcement component for reinforcing the foundation pit and a drainage component for draining water from the foundation pit. The reinforcement component mainly reinforces the side walls and corners of the foundation pit, while the drainage component is used to drain water present in the foundation pit and to prevent and remove groundwater and other liquids appearing at the bottom of the foundation pit in a timely manner, which facilitates the work inside the foundation pit.

[0036] 2. The foundation pit structure of this application has high safety. The foundation pit is equipped with a fall protection net, which increases the protection of workers from falling. The fall protection net is equipped with a water storage channel. Rainwater from the outside enters into the fall protection net through the water inlet, which increases the weight of the fall protection net. The fall protection net firmly presses against the pit wall, making the foundation pit more capable of coping with heavy rainfall and making the sides of the foundation pit less likely to collapse.

[0037] 3. The foundation pit structure of this application is equipped with a reinforcement component, which contains a water-absorbing part that can be heated and a fixing part. The water-absorbing part and the fixing part are driven into the bottom of the foundation pit. The water-absorbing part that can be heated dries and dehumidifies the bottom of the foundation pit, which can effectively deal with the adverse effects of groundwater on the foundation pit. Attached Figure Description

[0038] Figure 1 This is a structural diagram of the application without a fall protection net.

[0039] Figure 2 This is an overall structural diagram of this application.

[0040] Figure 3 This is a connection diagram of the support plate and the support block.

[0041] Figure 4 This is a partial structural diagram of the drainage pipe of this application.

[0042] Figure 5 This is a partial enlarged view of the fall protection net of this application.

[0043] Figure 6 This is a partial sectional view of this application.

[0044] Figure 7 This is a partial top view of the fall protection net of this application.

[0045] Figure 8 This is a partial front view of the fall protection net of this application.

[0046] Figure 9 This application is Figure 8 Enlarged view of point A in the middle.

[0047] Figure 10 This application is Figure 8 Enlarged view of point B in the middle.

[0048] Figure 11 This is a connection diagram of the water storage channel and water intake channel in this application.

[0049] Explanation of reference numerals in the attached drawings: 1. Main body of the foundation pit; 2. Reinforcement components; 201. Corner reinforcement component; 2011. Corner reinforcement plate; 2012. Climbing pole; 202. Vertical reinforcement component; 2021. Support plate; 2022. Support block; 3. Drainage components; 301. Fall protection net; 3011. Water storage channel; 3012. Opening; 3013. Water inlet; 3014. Water suction channel; 302. Drainage pipe; 3021. Water storage chamber; 3022. Drainage channel; 4. Fixing component; 401. Fixing part; 402. Water suction part; 4021. Water suction strip; 40221. Electric heating wire; 40222. Heat insulation sleeve; 40223. Heat conducting sheet; 5. Installation channel; 6. Internal channel; 7. Connection channel. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0051] This application discloses a foundation pit structure and its construction method.

[0052] refer to Figures 1 to 2 The foundation pit structure includes a foundation pit body 1 with a support structure installed. The support structure includes a reinforcement component 2 and a drainage component 3. The drainage component 3 is installed on the reinforcement component 2. The drainage component 3 includes a fall protection net 301 and a drainage pipe 302. The drainage pipe 302 is installed inside the reinforcement component 2. One side of the fall protection net 301 is connected to the reinforcement component 2. Multiple water storage channels 3011 are provided inside the fall protection net 301. The bottom of the fall protection net 301 is in contact with the bottom of the foundation pit body 1. A water-absorbing fixing component 4 is provided at the bottom of the fall protection net 301. The fixing component 4 is driven into the bottom of the foundation pit body 1.

[0053] refer to Figure 1 and Figure 2 The reinforcement component 2 includes a corner reinforcement component 201 and a vertical reinforcement component 202. The corner reinforcement component 201 is fixed at the corner of the foundation pit body 1 and is attached to the corner wall of the foundation pit body 1. The vertical reinforcement component 202 is connected to the corner reinforcement component 201. The corner is shielded and protected by the attached corner reinforcement component 201, and the corner position is firmly pressed, so that the corner position is not easy to collapse.

[0054] refer to Figure 2 and Figure 3 The vertical reinforcement component 202 is located on one side of the corner reinforcement component 201. The vertical reinforcement component 202 includes a support plate 2021 fixed to the bottom of the pit body 1 and a support block 2022. The support block 2022 is installed on one side of the support plate 2021 by thread engagement and is connected to the side wall of the pit. An installation channel 5 is provided in the support plate 2021. The drainage pipe 302 is arranged in the installation channel 5. After the drainage pipe is inserted into the support plate 2021, the weight of the drainage pipe 302 can make the support plate 2021 more firmly pressed against the bottom of the pit.

[0055] refer to Figure 2 The corner reinforcement component 201 includes a corner reinforcement plate 2011 fixed to the bottom of the pit body 1 and a climbing pole 2012 for climbing. The climbing pole 2012 is fixed to the corner reinforcement plate 2011, and the corner reinforcement plate 2011 is attached to the corner wall of the pit body 1. An opening 3012 is provided on the fall protection net 301, and the opening 3012 is aligned with the corner reinforcement component 201. Workers can climb up and down in the pit through the opening and the climbing pole 2012. The fall protection net 301 increases the fall protection of the edge of the pit, making it less likely for workers to fall into the pit from the side.

[0056] The support plate 2021 and the corner reinforcement plate 2011 are fixed together by screws or other structural components, and the support plate 2021 and the corner reinforcement plate 2011 can be disassembled.

[0057] refer to Figure 4The drainage pipe 302 includes a water storage chamber 3021 and a drainage channel 3022 from the outside to the inside. Both ends of the drainage channel 3022 are connected to the external environment. The top of the water storage chamber 3021 is also connected to the external environment. The water storage chamber 3021 is connected to the external environment. In rainy weather, rainwater can directly enter the water storage chamber 3021 for storage, which increases the weight of the drainage pipe 302 and makes the support plate 2021 more stable when fixed in the foundation pit. One end of the drainage pipe 302 is connected to a booster pump. When drainage is needed, the booster pump is started, and the drainage channel in the drainage pipe pumps out the water in the foundation pit under the action of the booster pump.

[0058] refer to Figure 5 and Figure 6 The fall arresting net 301 is made of anti-aging rubber material, making it more durable. The fall arresting net 301 is provided with water inlet holes 3013 for communicating with the water storage channel 3011. The fall arresting net 301 covers the reinforcement component 2 and extends to the outside of the foundation pit body 1 and is fixed to the ground. Multiple water storage channels 3011 are provided inside the fall arresting net 301. Damage to one water storage channel 3011 will not affect another water storage channel 3011.

[0059] refer to Figure 10 The fastener 4 includes a fixing part 401 and a water-absorbing part 402. One end of the fixing part 401 is connected to the fall protection net 301. The water-absorbing part 402 is installed inside the fixing part 401. The fixing part is made of metal. After the end of the fall protection net 301 is inserted into the fixing part 401, it is sealed and fixed by waterproof glue. The fastener increases the firmness of the bottom installation of the fall protection net 301.

[0060] refer to Figure 10 The bottom of the fixing part 401 has a conical surface. The fixing part 401 can be driven into the bottom of the pit by a hammer or other structure for fixing. A connecting channel 7 is provided inside the fixing part 401. The water-absorbing part 402 is fixed in the connecting channel 7 and penetrates the fixing part 401.

[0061] refer to Figure 9 and Figure 11The fall protection net 301 has a water absorption channel 3014 that is not connected to the water storage channel 3011. One end of the water absorption part 402 is inserted into the water absorption channel 3014. The water absorption channel 3014 is connected to the connecting channel 7. The water absorption part 402 includes a water absorption strip 4021 and a heat conduction component 4022. The water absorption strip 4021 has an internal channel 6. The heat conduction component 4022 includes an electric heating wire 40221, a heat insulation sleeve 40222, and a heat conduction plate 40223. The heat insulation sleeve 40222 is fixed on the water absorption strip 4021, and the heat conduction plate 40223 is fixed on the heat insulation sleeve 40222. The electric heating wire 40221 is inserted from the outside into the internal channel 6. The heat generated by the electric heating wire 40221 is used to heat the heat conduction plate 40223.

[0062] Among them, the heat-conducting sheet 40223 is made of heat-conducting metal. The heat-conducting sheet 40223 is fixed to the heat insulation sleeve 40222 by waterproof adhesive. The heat insulation sleeve 40222 is made of heat insulation material, such as Dike aluminum foil heat insulation roll.

[0063] The working principle of the foundation pit structure in this application:

[0064] A construction method for a foundation pit structure, comprising the following steps: A support structure is installed within the foundation pit for reinforcement, protection, and drainage; the corner reinforcement component 201 of the reinforcement component 2 reinforces the corner portion of the foundation pit, and the vertical reinforcement component 202 provides vertical support and reinforcement; the drainage component 3 includes a drainage pipe 302 and a fall arrest net 301, the drainage pipe 302 being inserted into the vertical reinforcement component 202 to increase its structural strength, and cement can be injected into the drainage pipe 302 for further reinforcement; the fall arrest net 301 can be used for worker fall protection, and it is in close contact with the sidewall of the foundation pit, providing protection against falls. The sidewalls of the foundation pit are supported and protected, while the fall arrest net 301 has a liquid storage function. In case of rain, rainwater can be collected in the water storage channel 3011 of the fall arrest net 301, which increases the weight of the fall arrest net 301 and makes the connection between the fall arrest net 301 and the pit wall more tight. The bottom of the fall arrest net 301 is fixed with a fixing part 4. Under the action of the electric heating wire 40221, the heat conduction plate 40223 on the fixing part 4 can heat up. The heating part of the fixing part 4 is driven into the bottom of the foundation pit. The heat generated by the heating part can effectively improve the situation of dampness and liquid (such as groundwater) at the bottom of the foundation pit and can effectively deal with the seepage of groundwater.

[0065] S1. First, excavate the main body of the foundation pit 1, and then install the support components inside the main body of the foundation pit 1;

[0066] S2. Install the corner reinforcement component 201 of the support assembly at the corner position of the foundation pit body 1. After the corner reinforcement plate 2011 of the corner reinforcement component is set at the corner position, a positioning component is driven into the corner reinforcement plate 2011. The positioning component can be a fixing pin or a positioning column, etc. After being driven into the pit wall of the foundation pit, the corner reinforcement plate 2011 is fixed, which can maintain the stability of the corner reinforcement plate 2011. The positioning component is inserted into the pit wall of the foundation pit body 1.

[0067] S3. Install the vertical reinforcement component 202 at the bottom of the pit body 1;

[0068] S4. Install the fall protection net 301. After the fall protection net 301 is connected to the support block 2022, rotate the support block 2022 and insert the support block 2022 into the pit wall. Install the fixing part 401 at the bottom of the fall protection net 301 into the bottom of the pit body 1 and fix it.

[0069] The implementation principle of a foundation pit structure and its construction method in this application embodiment is as follows: the foundation pit is provided with a structure.

[0070] 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 foundation pit structure, comprising a foundation pit body (1) with a support structure installed, characterized in that: The support structure includes a reinforcement component (2) and a drainage component (3). The drainage component (3) is installed on the reinforcement component (2). The drainage component (3) includes a fall arrest net (301) and a drainage pipe (302). The drainage pipe (302) is installed inside the reinforcement component (2). One side of the fall arrest net (301) is connected to the reinforcement component (2). Multiple water storage channels (3011) are provided inside the fall arrest net (301). The bottom of the fall arrest net (301) and the main body of the foundation pit (1) are connected. The bottom of the fall arresting net (301) is in contact with the bottom of the pit. The bottom of the fall arresting net (301) is provided with a water-absorbing fastener (4). The fastener (4) is driven into the bottom of the pit body (1). The fastener (4) includes a fixing part (401) and a water-absorbing part (402). One end of the fixing part (401) is connected to the fall arresting net (301), and the water-absorbing part (402) is installed in the fixing part (401). The bottom of the fixing part (401) is formed with a conical surface. The fixing part (401) is located inside the water-absorbing part. A connecting channel (7) is provided, and the water-absorbing part (402) is fixed in the connecting channel (7) and penetrates the fixing part (401); the fall-prevention net (301) is provided with a water-absorbing channel (3014) that is not connected to the water storage channel (3011), and one end of the water-absorbing part (402) is inserted into the water-absorbing channel (3014). The water-absorbing part (402) includes a water-absorbing strip (4021) and a heat-conducting component (4022). The water-absorbing strip (4021) has an internal channel. (6) The heat-conducting component (4022) includes an electric heating wire (40221), a heat insulation sleeve (40222) and a heat-conducting sheet (40223). The heat insulation sleeve (40222) is fixed on the water-absorbing strip (4021), and the heat-conducting sheet (40223) is fixed on the heat insulation sleeve (40222). The electric heating wire (40221) is inserted from the outside into the internal channel (6), and the heat generated by the electric heating wire (40221) is used to heat the heat-conducting sheet (40223).

2. The foundation pit structure according to claim 1, characterized in that: The reinforcement component (2) includes a corner reinforcement component (201) and a vertical reinforcement component (202). The corner reinforcement component (201) is fixed at the corner of the foundation pit body (1) and fits against the corner wall of the foundation pit body (1). The vertical reinforcement component (202) is connected to the corner reinforcement component (201).

3. The foundation pit structure according to claim 2, characterized in that: The vertical reinforcement component (202) is located on one side of the corner reinforcement component (201). The vertical reinforcement component (202) includes a support plate (2021) fixed to the bottom of the pit body (1) and a support block (2022). The support block (2022) is installed on one side of the support plate (2021) by thread engagement and is connected to the side wall of the pit. An installation channel (5) is provided in the support plate (2021), and a drainage pipe (302) is arranged in the installation channel (5).

4. The foundation pit structure according to claim 2, characterized in that: The corner reinforcement component (201) includes a corner reinforcement plate (2011) fixed to the bottom of the pit body (1) and a climbing pole (2012) for climbing. The climbing pole (2012) is fixed on the corner reinforcement plate (2011). The corner reinforcement plate (2011) and the corner wall of the pit body (1) are attached and fixed. An opening (3012) is provided on the fall protection net (301), and the opening (3012) is aligned with the corner reinforcement component (201).

5. The foundation pit structure according to claim 1, characterized in that: The drain pipe (302) includes a water storage chamber (3021) and a drain channel (3022) from the outside to the inside. Both ends of the drain channel (3022) are connected to the external environment, and the top of the water storage chamber (3021) is connected to the external environment.

6. The foundation pit structure according to claim 1, characterized in that: The fall protection net (301) is made of anti-aging adhesive material. The fall protection net (301) is provided with water inlet holes (3013) for communicating with the water storage channel (3011). The fall protection net (301) shields the reinforcement component (2) and extends to the outside of the pit body (1) and is fixed on the ground.

7. A construction method for a foundation pit structure, characterized in that: The foundation pit structure includes any one of claims 1 to 6, and the construction method steps for the foundation pit structure are as follows: S1. First, excavate the main body of the foundation pit (1), and then install the support components inside the main body of the foundation pit (1); S2. Install the corner reinforcement component (201) of the support assembly at the corner position of the foundation pit body (1). After the corner reinforcement plate (2011) of the corner reinforcement component (201) is set at the corner position, drive the fixing part (4) into the corner reinforcement plate (2011) and insert the fixing part (4) into the pit wall of the foundation pit body (1). S3. Install the vertical reinforcement component (202) at the bottom of the pit body (1); S4. Install the fall protection net (301). After the fall protection net (301) is connected to the support block (2022), rotate the support block (2022) and insert the support block (2022) into the pit wall. Install the fixing part (401) at the bottom of the fall protection net (301) into the pit bottom of the foundation pit body (1) and fix it.

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