Foundation pit wall support structure for complex stratum with soft upper and hard lower layers

Abstract

The application relates to the field of foundation pit supporting, in particular to a soft-over-hard complex stratum foundation pit wall body supporting structure, which comprises a supporting mechanism, a water absorbing mechanism and a drainage mechanism. When the soft-over-hard complex stratum foundation pit is eroded by rain or in a stormy weather, the supporting mechanism can support the foundation pit wall body, no matter how the direction of water and soil loss is, the supporting mechanism can minimize the possibility of the foundation pit wall body deviating, the water absorbing mechanism can quickly and as much as possible absorb the moisture in the soft soil layer, and the moisture absorbed by the water absorbing mechanism can be quickly drained under the action of the drainage mechanism. The application has the effect of solving the problem that the foundation pit deviates due to water and soil loss and the like in the soft-over-hard complex stratum, the foundation pit wall body supporting structure is difficult to be effectively supported, and the building components in the foundation range deviate or settle.

Description

Technical Field

[0001] This application relates to the field of foundation pit support, in particular to a foundation pit wall support structure with soft upper and hard lower complex strata. Background Art

[0002] With the rapid development of my country's construction level, there are more and more high-rise buildings. For high-rise buildings, foundation pit support is usually required. Foundation pit support is a measure of support, reinforcement and protection for the side walls of the foundation pit and the surrounding environment to ensure the safety of underground structure construction and the surrounding environment of the foundation pit. In related technologies, different forms of support for the foundation pit are usually adopted according to the safety level of the building. Existing forms of foundation pit support usually include pile support, underground continuous wall support, cement retaining wall support, shotcrete support, reverse arch wall support and original soil slope support.

[0003] In related technologies, underground continuous wall support is usually used for foundation pits with complex strata that are soft on top and hard on the bottom. During the construction of the underground continuous wall, internal support is usually added to the wall of the underground continuous wall, or anchor cables are added to the outside of the underground continuous wall. This type of temporary support structure enhances the stability of the foundation pit support wall to a certain extent.

[0004] However, for the above-mentioned related technologies, for complex strata with soft upper part and hard lower part, settlement is prone to occur due to reasons such as soil erosion, which may cause severe foundation pit slippage. Foundation pit slippage will make it difficult for the underground continuous wall structure to effectively support the foundation pit, thereby causing the building components within the foundation range to deviate or settle. Summary of the Invention

[0005] In order to solve the problem in the related art that foundation pit slippage is caused by soil erosion and other reasons in complex strata with soft upper part and hard lower part, which makes it difficult for the foundation pit wall support structure to effectively support, and further causes the building components within the foundation range to deflect or settle, the present application provides a foundation pit wall support structure in complex strata with soft upper part and hard lower part.

[0006] The present application provides a foundation pit wall support structure in a complex stratum with soft upper part and hard lower part, which adopts the following technical solution:

[0007] A foundation pit wall support structure in a complex stratum with soft upper part and hard lower part, comprising:

[0008] A support mechanism, comprising a support plate, a support oblique rod, and a support anchor cable, wherein the support plate abuts against a side of the foundation pit wall close to the foundation pit, one end of the support oblique rod is rotatably connected to the support plate, the other end of the support oblique rod abuts against the bottom wall of the foundation pit, one end of the support anchor cable is movably connected to a side of the support plate away from the foundation pit, and the other end of the support anchor cable passes through the foundation pit wall and is inserted into the soft stratum;

[0009] A water suction mechanism, the water suction mechanism is used to suck out water in the soft formation, the water suction mechanism includes a water suction pump, a water suction pipe, and a water suction sac. The water suction pump is arranged on the upper surface of the soft formation, one end of the water suction pipe is connected to the water suction pump, and the other end of the water suction pipe is inserted into the soft formation. The water suction sac is fixedly connected to the end of the water suction pipe located in the soft formation;

[0010] A drainage mechanism is used to discharge water absorbed from the soft formation. The drainage mechanism includes an inlet pipe, an outlet pipe and a water storage tank. One end of the inlet pipe is connected to the water outlet of the suction pump. The water storage tank is located on the upper surface of the soft formation. The other end of the inlet pipe is connected to the water storage tank. The outlet pipe is passed through the water storage tank.

[0011] By adopting the above technical scheme, the supporting mechanism, the water absorbing mechanism and the drainage mechanism are arranged, so that when the complex stratum with soft upper part and hard lower part encounters heavy rain or heavy rain, resulting in soil erosion, firstly, the supporting mechanism can support the foundation pit wall, and no matter the direction of soil erosion is toward the foundation pit or away from the foundation pit, the foundation pit wall can be effectively supported; secondly, the water absorbing mechanism can quickly and as much as possible absorb the water in the soft soil layer; thirdly, the drainage mechanism can discharge the water absorbed by the water absorbing mechanism, thereby reducing the water in the soft soil layer, thereby reducing the damage caused by soil erosion to the soil around the foundation pit, and also reducing the possibility of settlement or displacement of the upper soft soil. The present application solves to a certain extent the problem in the related art that the foundation pit slips due to soil erosion and other reasons in the complex stratum with soft upper part and hard lower part, resulting in the difficulty of effective support of the foundation pit wall support structure, thereby causing displacement or settlement of building components within the foundation range.

[0012] Optionally, a plurality of the supporting oblique rods and a plurality of the supporting anchor cables are provided on one of the supporting plates, and the plurality of the supporting oblique rods correspond to the plurality of the supporting anchor cables one to one.

[0013] By adopting the above technical solution, a support plate is provided with a plurality of supporting diagonal rods and a plurality of supporting anchor cables, thereby making the foundation pit wall support structure of the present application more stable.

[0014] Optionally, a consolidation mechanism is further included, which includes a blower fan blade, a gear pump group, a blower pipe and a drying box. The blower fan blade is rotatably connected to the gear pump group, one end of the blower pipe is passed through the supporting anchor cable, and the other end of the blower pipe is fixedly connected to the gear pump group. The blower fan blade is covered by the blower pipe, and the drying box contains drying powder. The drying box is located on the side of the blower pipe away from the gear pump group.

[0015] By adopting the above technical solution, the consolidation mechanism is set as a combination of a blower blade, a gear pump group, a blower pipe and a drying box. When the complex stratum with soft upper part and hard lower part is invaded by rainwater, the gear pump group drives the blower blade, and the blower blade rotates, which will blow the dry powder in the drying box, causing the dry powder to move toward the soft soil layer in the blower pipe, thereby absorbing the moisture in the soft soil layer.

[0016] Optionally, the gear pump group includes a gear box, a first gear and a second gear, one end of the gear box is connected to the water outlet pipe, and a water outlet is provided on the end of the gear box opposite to the water outlet pipe. The first gear and the second gear are both rotatably connected in the gear box, the first gear is meshed with the second gear, the gear shaft of the first gear passes through the gear box, and the blower blade is coaxially arranged with the gear shaft of the first gear.

[0017] By adopting the above technical solution, the gear pump group is arranged as a combination of a gear box, a first gear and a second gear, so that the consolidation mechanism can effectively utilize the water flow discharged by the drainage mechanism to drive the rotation of the gear pump group. At the same time, since the first gear can only rotate in one direction, the blower blades can effectively blow the blower pipe stably.

[0018] Optionally, an enlarged portion is provided at one end of the support anchor cable away from the support plate, and the enlarged portion is provided in a porous spherical shape.

[0019] By adopting the above technical solution, the magnifying part is set to be a porous spherical shape, so that most of the soil will be blocked outside the magnifying part, but the porous setting can enable the drying powder to fully contact with the moisture in the soil, thereby enhancing the absorption of moisture in the soil by the drying powder.

[0020] Optionally, a pulling claw is further provided at one end of the support anchor cable away from the support plate, and the enlarged portion is located between the pulling claw and the support anchor cable.

[0021] By adopting the above technical solution and setting the pull-catch, when the upper soft soil flows toward the foundation pit wall, the pull-catch can minimize the possibility of the foundation pit wall sliding toward the foundation pit.

[0022] Optionally, the water-absorbing sac is made of a single-sided water-permeable material.

[0023] By adopting the above technical solution, the water absorption bag is set to be permeable on the side close to the soil and waterproof on the side away from the soil, so that the moisture in the upper soft soil can be collected as much as possible, thereby facilitating the water absorption mechanism to absorb the moisture in the upper soft soil as much as possible.

[0024] Optionally, the drying box is provided with a material drawer, and a plurality of material discharge ports are opened on the bottom wall of the material drawer.

[0025] By adopting the above technical solution, a material drawer is placed in the drying box, so that the staff can replace the dry powder in time after the dry powder is used up. At the same time, the provision of several discharge openings allows the dry powder to fall from the discharge openings, thereby ensuring that the dry powder can be blown by the blower blades so that the dry powder can circulate in the blower pipe.

[0026] Optionally, an anti-blocking component is provided in the material holding drawer, and the anti-blocking component includes an anti-blocking gear, an anti-blocking rack and a brush plate. The anti-blocking gear is rotatably connected to the inner side wall of the material holding drawer, and the anti-blocking rack is slidably connected to the inner side wall of the material holding drawer. The anti-blocking gear is meshed with the anti-blocking rack, and the brush plate is fixedly connected to the anti-blocking rack. The brush plate can clean the bottom wall of the material holding drawer.

[0027] By adopting the above technical solution, the anti-blocking component is set as a combination of an anti-blocking gear, an anti-blocking rack and a brush plate, so that when the material drawer is blocked, the staff can rotate the anti-blocking gear to drive the anti-blocking rack to move horizontally, and then the brush plate can clean the bottom wall of the material drawer to reduce the possibility of the discharge port being blocked.

[0028] Optionally, a sewage treatment tank is further included, which is used to treat the sewage flowing out of the water outlet, and the sewage treatment tank discharges the treated sewage into the municipal pipe network.

[0029] By adopting the above technical solution and setting up the sewage treatment tank, the possibility of sewage flowing back to the upper soft soil is effectively reduced, and secondary pollution caused by sewage is also prevented.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. Through the setting of the supporting mechanism, the water absorption mechanism and the drainage mechanism, when the upper soft and lower hard complex stratum encounters heavy rain or more rain, causing water and soil loss, in addition to the foundation pit wall being able to support the soil, it can be further supported, the supporting mechanism can support the foundation pit wall, the water absorption mechanism can quickly and as much as possible absorb the water in the soft soil layer to reduce the water and soil loss speed of the upper soft soil, the drainage mechanism can drain the water absorbed by the water absorption mechanism, so that the water in the soft soil layer is less, thereby reducing the damage caused by water and soil loss to the soil around the foundation pit, the application solves the problem of foundation pit sliding caused by water and soil loss in the upper soft and lower hard complex stratum in the related art, which causes the foundation pit wall supporting structure to be difficult to effectively support, and further causes the building components within the foundation to be offset or settled;

[0032] 2. Through the setting of the consolidation mechanism, the consolidation mechanism is set to be a combination of a blowing fan blade, a gear pump set, a blowing pipe and a drying box, so that when the upper soft and lower hard complex stratum is attacked by rain, the gear pump set drives the blowing fan blade to rotate, which blows the drying powder in the drying box to move in the blowing pipe towards the soft soil layer, thereby absorbing the water in the soft soil layer;

[0033] 3. Through the setting of the anti-blocking assembly, the anti-blocking assembly is set to be a combination of an anti-blocking gear, an anti-blocking rack and a brush plate, so that when the material containing drawer is blocked, the staff can rotate the anti-blocking gear to drive the anti-blocking rack to move horizontally, and then the brush plate can clean the bottom wall of the material containing drawer to reduce the possibility of the discharge port being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the overall structure schematic diagram of the upper soft and lower hard complex stratum foundation pit wall supporting structure of the embodiment of the application.

[0035] Figure 2 It is Figure 1 The structure schematic diagram after hiding the stratum and the foundation pit wall.

[0036] Figure 3 It is the structure schematic diagram of the supporting anchor cable in the upper soft and lower hard complex stratum foundation pit wall supporting structure of the embodiment of the application.

[0037] Figure 4 It is the structure schematic diagram of the blowing fan blade and the gear pump set in the upper soft and lower hard complex stratum foundation pit wall supporting structure of the embodiment of the application.

[0038] Figure 5 It is the structure schematic diagram of the drying and in the upper soft and lower hard complex stratum foundation pit wall supporting structure of the embodiment of the application.

[0039] Description of reference numerals:

[0040] 1. Support mechanism; 11. Support plate; 12. Support diagonal rod; 13. Support anchor cable; 2. Foundation pit wall; 3. Water suction mechanism; 31. Water suction pump; 32. Water suction pipe; 33. Water suction sac; 4. Drainage mechanism; 41. Water inlet pipe; 42. Water outlet pipe; 43. Water storage tank; 5. Consolidation mechanism; 51. Blower blades; 52. Gear pump assembly; 521. Gear box; 522. First gear; 523. Second gear; 53. Drying box; 6. Amplifying part; 7. Pull claw; 8. Material drawer; 9. Discharge port; 10. Anti-blocking assembly; 101. Anti-blocking gear; 102. Anti-blocking rack; 103. Brush plate; 14. Sewage treatment tank. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-5 This application is described in further detail.

[0042] The embodiment of the present application discloses a foundation pit wall support structure in a complex stratum with soft upper part and hard lower part.

[0043] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] It should also be noted that regarding the foundation pit slippage in this application, when the buildings in the foundation pit have not yet been constructed, the slippage of the foundation pit due to the damage of the support structure can be intuitively seen; for the buildings in the foundation pit that have been constructed or completed, the most intuitive judgment is basement leakage, road cracks, etc.

[0045] Reference Figure 1The supporting structure of the foundation pit wall in the complex stratum with soft upper part and hard lower part includes a supporting mechanism 1, a water absorption mechanism 3 and a drainage mechanism 4. When the foundation pit in the complex stratum with soft upper part and hard lower part encounters rain erosion or rainstorm weather, the supporting mechanism 1 can support the foundation pit wall 2. No matter what the direction of soil erosion is, the supporting mechanism 1 can minimize the possibility of the foundation pit wall 2 shifting. The water absorption mechanism 3 can quickly and as much as possible absorb the moisture in the soft soil layer. The moisture absorbed by the water absorption mechanism 3 will be quickly discharged under the action of the drainage mechanism 4. The present application solves to a certain extent the problem that the foundation pit slips due to soil erosion and other reasons in the related technology in the complex stratum with soft upper part and hard lower part, resulting in the difficulty of the supporting structure of the foundation pit wall 2 to effectively support it, thereby causing the building components within the foundation range to shift or settle.

[0046] Reference Figure 2 The supporting mechanism 1 includes a supporting plate 11, a supporting diagonal rod 12 and a supporting anchor cable 13. The supporting plate 11 is in contact with the side of the foundation pit wall 2 close to the foundation pit. One end of the supporting diagonal rod 12 is rotatably connected to the supporting plate 11, and the other end of the supporting diagonal rod 12 is in contact with the bottom wall of the foundation pit. One end of the supporting anchor cable 13 is movably connected to the side of the supporting plate 11 away from the foundation pit, and the other end of the supporting anchor cable 13 passes through the foundation pit wall 2 and is inserted into the soft stratum.

[0047] A support plate 11 is provided with multiple diagonal support rods 12 and multiple support anchor cables 13, with each of the multiple diagonal support rods 12 corresponding to each of the multiple support anchor cables 13. In the embodiment of the present application, a support plate 11 is provided with three support rods and three support anchor cables 13. In other embodiments, a support plate 11 may be provided with other numbers of support rods and support anchor cables 13, which is also a preferred embodiment of the present application.

[0048] A plurality of supporting diagonal rods 12 and a plurality of supporting anchor cables 13 are correspondingly provided on a supporting plate 11, thereby making the supporting structure of the foundation pit wall 2 of the present application more stable.

[0049] Reference Figure 2 An enlarged portion 6 is provided at one end of the support anchor cable 13 away from the support plate 11, and the enlarged portion 6 is provided in a porous spherical shape.

[0050] The magnifying part 6 is configured to be a porous spherical shape, so that most of the soil is blocked outside the magnifying part 6. However, the porous configuration enables the drying powder to fully contact the moisture in the soil, thereby enhancing the absorption of moisture in the soil by the drying powder.

[0051] A pulling claw 7 is further provided on one end of the supporting anchor cable 13 away from the supporting plate 11 , and the enlarged portion 6 is located between the pulling claw 7 and the supporting anchor cable 13 .

[0052] The arrangement of the pull-catch can minimize the possibility of the foundation pit wall 2 sliding toward the foundation pit when the upper soft soil flows toward the foundation pit wall 2 .

[0053] It should be noted that, regarding how to drive the support anchor cable 13 into the soft soil layer, it is necessary to use a drilling rig to drill a hole in the soft soil layer that can support the anchor cable 13, and then drive the support anchor cable 13 into the soft soil layer. This is a conventional method in the field and is therefore not described in detail in the embodiments of this application. At the same time, it is also necessary to reserve a hole in the foundation pit wall 2 for the support anchor cable 13 to pass through, which is also a conventional construction method in the field.

[0054] Reference Figure 2 The water suction mechanism 3 is used to suck out the moisture in the soft formation. The water suction mechanism 3 includes a water suction pump 31, a water suction pipe 32, and a water suction sac 33. The water suction pump 31 is arranged on the upper surface of the soft formation. One end of the water suction pipe 32 is connected to the water suction pump 31, and the other end of the water suction pipe 32 is inserted into the soft formation. The water suction sac 33 is fixedly connected to the end of the water suction pipe 32 located in the soft formation. In the embodiment of the present application, one water suction pump 31 is correspondingly provided with three water suction pipes 32, and each water suction pipe 32 is provided with a water suction sac 33. In other embodiments, the water suction pipes 32 can also be correspondingly provided in numbers of two, four, five, etc., which are all preferred embodiments of the present application. The number of water suction pipes provided is mainly determined by the rainfall in the area, etc.

[0055] In the embodiment of the present application, the water-absorbing bag 33 is made of a single-sided water-permeable material.

[0056] The water absorbing bag 33 is configured to be water-permeable on the side close to the soil and waterproof on the side away from the soil, so that the moisture in the upper soft soil can be collected as much as possible, thereby facilitating the water absorbing mechanism 3 to absorb the moisture in the upper soft soil as much as possible.

[0057] Reference Figure 2 The drainage mechanism 4 is used to discharge the water absorbed from the soft formation. The drainage mechanism 4 includes an inlet pipe 41, an outlet pipe 42 and a water tank 43. One end of the inlet pipe 41 is connected to the water outlet of the suction pump 31. The water tank 43 is located on the upper surface of the soft formation. The other end of the inlet pipe 41 is connected to the water tank 43, and the outlet pipe 42 is passed through the water tank 43.

[0058] It should be noted that, as to how the water absorption mechanism 3 and the water drainage mechanism 4 in the present application are arranged, in order to facilitate use, the water absorption mechanism 3 and the water drainage mechanism 4 in the present application are arranged above the soft soil layer, that is, on the road surface beside the building after the building is completed, which is more in line with the actual engineering and is more convenient for the use and maintenance of the water absorption mechanism 3 and the water drainage mechanism 4 by the staff in the later period. As to what type of product the water absorption mechanism 3 uses and what type of product the water drainage mechanism 4 uses, it is a relatively conventional means for those skilled in the art, and therefore will not be described in detail in the embodiments of the present application.

[0059] With reference to Figure 3 and Figure 4 , the upper-soft lower-hard complex stratum foundation pit wall supporting structure of the present application further comprises a consolidation mechanism 5, the consolidation mechanism 5 comprises a blowing fan blade 51, a gear pump set 52, a blowing pipe and a drying box 53, the blowing fan blade 51 is rotationally connected to the gear pump set 52, one end of the blowing pipe is arranged in the support anchor cable 13, the other end of the blowing pipe is fixedly connected to the gear pump set 52, the blowing pipe covers the blowing fan blade 51, the drying box 53 contains dry powder and is located on the side of the blowing pipe away from the gear pump set 52.

[0060] The consolidation mechanism 5 is arranged in the combination of the blowing fan blade 51, the gear pump set 52, the blowing pipe and the drying box 53, so that when the upper-soft lower-hard complex stratum is affected by rainwater, the gear pump set 52 drives the blowing fan blade 51 to rotate, which blows the dry powder in the drying box 53, so that the dry powder moves in the blowing pipe towards the soft soil layer, thereby absorbing the water in the soft soil layer.

[0061] It should be noted that the blowing pipe is actually a layer of circular pipe inlaid in the inner side wall of the support anchor cable 13, and therefore the blowing pipe is not shown in the drawings of the embodiments of the present application.

[0062] With reference to Figure 4 , the gear pump set 52 comprises a gear box 521, a first gear 522 and a second gear 523, one end of the gear box 521 is connected to the water outlet pipe 42, a water outlet is formed in the end of the gear box 521 opposite to the water outlet pipe 42, the first gear 522 and the second gear 523 are both rotationally connected in the gear box 521, the first gear 522 and the second gear 523 are engaged, the gear shaft of the first gear 522 penetrates out of the gear box 521, and the blowing fan blade 51 is coaxially arranged with the gear shaft of the first gear 522. In the embodiments of the present application, the blowing fan blade 51 is coaxially arranged with the first gear 522, and in other embodiments, the blowing fan blade 51 can also be coaxially arranged with the second gear 523.

[0063] The gear pump group 52 is configured as a combination of a gear box 521, a first gear 522 and a second gear 523, so that the consolidation mechanism 5 can effectively utilize the water flow discharged by the drainage mechanism 4 to drive the rotation of the gear pump group 52. At the same time, since the first gear 522 can only rotate in one direction, the blower blades 51 can effectively and stably blow air to the blower pipe.

[0064] Reference Figure 4 and Figure 5 The drying box 53 is provided with a material drawer 8, and a plurality of discharge openings 9 are provided on the bottom wall of the material drawer 8. In the embodiment of the present application, holes are provided on both side walls of the material drawer 8, so that the fan can blow the dry powder in the material drawer 8. The provision of the discharge openings 9 is to blow as much dry powder as possible to the amplifying portion 6 over a large area.

[0065] A material drawer 8 is placed in the drying box 53, so that the staff can replace the dry powder in time after use. At the same time, the provision of a plurality of discharge ports 9 allows the dry powder to fall from the discharge ports 9, thereby ensuring that the dry powder can be blown by the blower blades 51 so that the dry powder can circulate in the blower pipe.

[0066] Reference Figure 5 An anti-blocking component 10 is provided in the material drawer 8, and the anti-blocking component 10 includes an anti-blocking gear 101, an anti-blocking rack 102 and a brush plate 103. The anti-blocking gear 101 is rotatably connected to the inner side wall of the material drawer 8, and the anti-blocking rack 102 is slidably connected to the inner side wall of the material drawer 8. The anti-blocking gear 101 is engaged with the anti-blocking rack 102, and the brush plate 103 is fixedly connected to the anti-blocking rack 102. The brush plate 103 can clean the bottom wall of the material drawer 8.

[0067] The anti-blocking component 10 is configured as a combination of an anti-blocking gear 101, an anti-blocking rack 102 and a brush plate 103, so that when the material drawer 8 is blocked, the staff can rotate the anti-blocking gear 101 to drive the anti-blocking rack 102 to move horizontally, and then the brush plate 103 can clean the bottom wall of the material drawer 8 to reduce the possibility of the discharge port 9 being blocked.

[0068] Referring to the figure, a sewage treatment tank 14 is also included. The sewage treatment tank 14 is used to treat the sewage flowing out of the water outlet. The sewage treatment tank 14 discharges the treated sewage into the municipal pipe network.

[0069] The provision of the sewage treatment tank 14 effectively reduces the possibility of sewage flowing back to the upper soft soil, and also prevents the sewage from causing secondary pollution.

[0070] The implementation principle of the base pit wall supporting structure of the upper-soft and lower-hard complex stratum is as follows: when the upper-soft and lower-hard complex stratum encounters heavy rain or more rain, causing water and soil loss, first, the supporting mechanism 1 can support the base pit wall 2, no matter the direction of water and soil loss is toward the base pit or away from the base pit, the base pit wall 2 can be effectively supported; second, the water absorbing mechanism 3 can quickly and as much as possible absorb the water in the soft soil layer; third, the drainage mechanism 4 can drain the water absorbed by the water absorbing mechanism 3, so that the water in the soft soil layer is less, thereby reducing the damage of water and soil loss to the soil around the base pit, and reducing the possibility of settlement or deviation of the upper soft soil, the application solves the problem that the base pit slips due to water and soil loss and the like in the upper-soft and lower-hard complex stratum in the related art, the base pit wall 2 supporting structure is difficult to be effectively supported, and the building components in the foundation range deviate or settle.

[0071] The above are preferred embodiments of the application, and are not intended to limit the protection scope of the application, therefore: any equivalent changes made on the structure, shape, principle of the application shall be covered within the protection scope of the application.

Claims

1. A foundation pit wall support structure with soft upper and hard lower complex strata, characterized in that: include: A support mechanism (1), the support mechanism (1) comprising a support plate (11), a support inclined rod (12) and a support anchor cable (13), the support plate (11) abutting against a side of a foundation pit wall (2) close to the foundation pit, one end of the support inclined rod (12) being rotatably connected to the support plate (11), the other end of the support inclined rod (12) abutting against the bottom wall of the foundation pit, one end of the support anchor cable (13) being movably connected to a side of the support plate (11) away from the foundation pit, the other end of the support anchor cable (13) passing through the foundation pit wall (2) and inserted into the soft stratum; A water suction mechanism (3), the water suction mechanism (3) is used to suck out water in the soft formation, the water suction mechanism (3) comprises a water suction pump (31), a water suction pipe (32), and a water suction sac (33), the water suction pump (31) is arranged on the upper surface of the soft formation, one end of the water suction pipe (32) is connected to the water suction pump (31), the other end of the water suction pipe (32) is inserted into the soft formation, and the water suction sac (33) is fixedly connected to the end of the water suction pipe (32) located in the soft formation; A drainage mechanism (4), the drainage mechanism (4) is used to discharge water absorbed from the soft stratum, the drainage mechanism (4) includes a water inlet pipe (41), a water outlet pipe (42) and a water storage tank (43), one end of the water inlet pipe (41) is connected to the water outlet of the water suction pump (31), the water storage tank (43) is located on the upper surface of the soft stratum, the other end of the water inlet pipe (41) is connected to the water storage tank (43), and the water outlet pipe (42) is provided on the water storage tank (43); The consolidation mechanism (5) further comprises a blast fan blade (51), a gear pump group (52), a blast pipe and a drying box (53), wherein the blast fan blade (51) is rotatably connected to the gear pump group (52), one end of the blast pipe is passed through the support anchor cable (13), and the other end of the blast pipe is fixedly connected to the gear pump group (52), the blast fan blade (51) is covered on the blast pipe, and the drying box (53) contains drying powder, and the drying box (53) is located on a side of the blast pipe away from the gear pump group (52); The gear pump assembly (52) includes a gear box (521), a first gear (522) and a second gear (523). One end of the gear box (521) is connected to the water outlet pipe (42). An outlet is provided on the end of the gear box (521) opposite to the water outlet pipe (42). The first gear (522) and the second gear (523) are both rotatably connected in the gear box (521). The first gear (522) is meshed with the second gear (523). The gear shaft of the first gear (522) passes through the gear box (521). The blower blade (51) is coaxially arranged with the gear shaft of the first gear (522).

2. The foundation pit wall support structure with soft upper and hard lower complex strata according to claim 1 is characterized in that: A plurality of the supporting oblique rods (12) and a plurality of the supporting anchor cables (13) are provided on one supporting plate (11), and the plurality of the supporting oblique rods (12) and the plurality of the supporting anchor cables (13) correspond one to one.

3. The foundation pit wall support structure with soft upper and hard lower complex strata according to claim 1 is characterized in that: An enlarged portion (6) is provided at one end of the support anchor cable (13) away from the support plate (11), and the enlarged portion (6) is provided in a porous spherical shape.

4. The foundation pit wall support structure in a complex stratum with soft upper part and hard lower part according to claim 3 is characterized in that: A pulling claw (7) is further provided at one end of the support anchor cable (13) away from the support plate (11), and the enlarged portion (6) is located between the pulling claw (7) and the support anchor cable (13).

5. The foundation pit wall support structure with soft upper and hard lower complex strata according to claim 1 is characterized in that: The water-absorbing sac (33) is made of a single-sided water-permeable material.

6. The foundation pit wall support structure with soft upper and hard lower complex strata according to claim 1 is characterized in that: The drying box (53) is provided with a material holding drawer (8), and a plurality of material discharge openings (9) are provided on the bottom wall of the material holding drawer (8).

7. The foundation pit wall support structure in a complex stratum with soft upper part and hard lower part according to claim 6 is characterized in that: An anti-blocking assembly (10) is provided in the material holding drawer (8), and the anti-blocking assembly (10) includes an anti-blocking gear (101), an anti-blocking rack (102) and a brush plate (103). The anti-blocking gear (101) is rotatably connected to the inner wall of the material holding drawer (8), and the anti-blocking rack (102) is slidably connected to the inner wall of the material holding drawer (8). The anti-blocking gear (101) is meshed with the anti-blocking rack (102), and the brush plate (103) is fixedly connected to the anti-blocking rack (102). The brush plate (103) can clean the bottom wall of the material holding drawer (8).

8. The foundation pit wall support structure with soft upper and hard lower complex strata according to claim 1 is characterized in that: It also includes a sewage treatment tank (14), which is used to treat sewage flowing out of the water outlet, and the sewage treatment tank (14) discharges the treated sewage into the municipal pipe network.

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