Deep foundation pit supporting structure close to subway line

Abstract

The utility model relates to the technical field of constructional engineering, and provides a deep foundation pit supporting structure close to a subway line, which comprises a base, a supporting mechanism and a detection mechanism. Displacement of the sliding block on the sliding groove can be adjusted, the sliding block slides to drive the supporting base to move, the supporting base moves to drive one end of the supporting rod to rotate and move on the third rotating shaft and drive the other end of the supporting rod to rotate on the fourth rotating shaft, and therefore the supporting plate is pulled or pushed to rotate on the second rotating shaft. After the supporting plate is adjusted to be in contact with a supporting face, the L-shaped plate is placed into a proper limiting frame, it is ensured that the L-shaped plate hooks the limiting frame, rotation of the supporting plate is limited, and due to the fact that the supporting rod and the supporting plate form a stable triangular structure, part of loads on the supporting plate can be borne to reduce stress of a wall, and the supporting plate is prevented from being damaged. The soil body is prevented from sliding, collapsing and collapsing, the horizontal pressure of the soil can be resisted, and the stability and safety of the foundation pit are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a deep foundation pit supporting structure adjacent to a subway line. Background Art

[0002] The excavation process of the foundation pit will inevitably cause deformation of the surrounding soil, which will affect the surrounding buildings and underground pipelines, and in serious cases will endanger their normal use or safety. In order to avoid this situation, support structures will be added during deep foundation design and pit construction to stabilize the safety of the foundation pit.

[0003] According to the retrieval of China Utility Model Publication No.: CN218861550U, a deep foundation pit support structure is disclosed, which belongs to the technical field of foundation pit support. It aims at the problem that the side of the deep foundation pit is limited and supported by pillars, so that the stability of the connection between the limiting structure of the side of the foundation pit and the foundation pit is poor, which makes the device unable to effectively support the deep foundation pit stably. It includes a vertical plate, and two inclined columns are fixed on one side of the vertical plate; the utility model is provided with a limiting column, a groove plate, a concave hole, and a slot, and the outer wall of the limiting column is threadedly connected with the inner wall of the concave hole opened at the top of the horizontal plate, the inner wall of the groove plate is clamped with the top of the limiting column, and the outer wall of the clamping block fixed at the top of the pillar is clamped and installed with the slot opened at the bottom of the horizontal plate, so as to further improve the stability of the connection between the bottom end of the horizontal plate and the external ground. It is provided with a connecting column, a groove, a fixing plate, and a cylinder, and the inner wall of the vertical plate is clamped with the outer wall of the rubber block, so as to improve the stability of the connection between the vertical plate and the side of the foundation pit.

[0004] However, when implementing the above technical solutions, there are the following problems: in some areas with complex geological conditions, undulating terrain or restrictive conditions, the design and construction of deep pit roadbed may need to consider a certain slope or inclination angle, and special support mechanisms are required for support. Utility Model Content

[0005] The utility model proposes a deep foundation pit support structure near a subway line, which solves the problem that the design and construction of a deep pit roadbed under some special conditions may need to consider a certain slope or inclination angle, and at this time a special supporting mechanism is needed for support.

[0006] The technical solution of the utility model is as follows: A deep foundation pit support structure adjacent to a subway line, comprising a base, a support mechanism and a detection mechanism, wherein a support mechanism is arranged above the base, and the support mechanism comprises a first bracket, a first rotating shaft, an L-shaped plate, a limit frame, a first fixed block, a second rotating shaft, a support plate, a slide groove, a slider, a support seat, a second bracket, a third rotating shaft, a support rod, a second fixed block, a fourth rotating shaft, a fifth rotating shaft, an anchor block and a ground nail, a protective shell is arranged on the front side of the base, a motor is arranged inside the protective shell, and a detection mechanism is arranged on the front side of the base, and the detection mechanism comprises a sensor, a fixing plate, a water level detector and a warning light.

[0007] Preferably, the top of the base is threadedly connected to a first bracket, the first bracket is internally threadedly connected to a first shaft, the first bracket forms a rotating structure with the L-shaped plate through the first shaft, and one side of the L-shaped plate is clamped with a limiting frame.

[0008] Preferably, two groups of first fixing blocks are welded on the top of the base, a second rotating shaft is embedded in one side of the two groups of first fixing blocks, and the first fixing blocks form a rotating structure with the support plate through the second rotating shaft.

[0009] Preferably, four groups of slide grooves are provided on the top of the base, and the base forms a sliding structure with the slider through the slide grooves, the top of the slider is threadedly connected to a support seat, the top of the support seat is threadedly connected to a second bracket, the second bracket is internally threadedly connected to a third rotating shaft, the second bracket forms a rotating structure with the support rod through the third rotating shaft, two groups of second fixed blocks are welded on the front side of the support plate, a fourth rotating shaft is threadedly connected to one side of the second fixed block, and the support rod and the second fixed block form a rotating structure through the fourth rotating shaft.

[0010] Preferably, four groups of fifth rotating shafts are threadedly connected around the base, and the base forms a rotating structure with the anchor block through the fifth rotating shafts.

[0011] Preferably, a plurality of groups of ground nails are welded to the bottom of the base, and the material of the ground nails is glass fiber geogrid ground nails.

[0012] Preferably, a protective shell is threadedly connected to the front of the base, a motor is threadedly connected inside the protective shell, a sensor is threadedly connected to the front of the base, two groups of fixing plates are welded on the same side of the base, a water level detector is threadedly connected between the two groups of fixing plates, and a warning light is threadedly connected to the top of the support plate.

[0013] The working principle and beneficial effects of the utility model are:

[0014] By setting a support mechanism, the displacement of the slider on the slide groove can be adjusted, and the sliding of the slider drives the support seat to move. The movement of the support seat drives one end of the support rod to rotate and displace on the third rotating shaft, and drives the other end of the support rod to rotate on the fourth rotating shaft, thereby pulling or pushing the support plate to rotate on the second rotating shaft, thereby realizing the angle adjustment of the support plate. After the support plate is adjusted to contact with the supporting surface, the L-shaped plate is placed in a suitable limit frame, and ensure that the L-shaped plate hooks the limit frame to limit the rotation of the support plate. Since the support rod and the support plate form a stable triangular structure, they can bear part of the load on the support plate to reduce the force on the wall. The support plate can effectively keep the soil within the range of the foundation pit to prevent the soil from slipping, collapsing and collapse, and can resist the horizontal pressure of the soil to ensure the stability and safety of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0018] Figure 3 It is a schematic diagram of the overall bottom structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the protective shell of the utility model;

[0020] In the figure: 1. base; 2. supporting mechanism; 201. first bracket; 202. first rotating shaft; 203. L-shaped plate; 204. limiting frame; 205. first fixed block; 206. second rotating shaft; 207. supporting plate; 208. slide groove; 209. slider; 210. supporting seat; 211. second bracket; 212. third rotating shaft; 213. supporting rod; 214. second fixed block; 215. fourth rotating shaft; 216. fifth rotating shaft; 217. anchor block; 218. ground nail; 3. protective shell; 4. motor; 5. detection mechanism; 501. sensor; 502. fixing plate; 503. water level detector; 504. warning light. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution for a deep foundation pit support structure near a subway line: it includes a base 1, a support mechanism 2 and a detection mechanism 5. The support mechanism 2 is arranged above the base 1. The support mechanism 2 includes a first bracket 201, a first rotating shaft 202, an L-shaped plate 203, a limit frame 204, a first fixed block 205, a second rotating shaft 206, a support plate 207, a slide groove 208, a slider 209, a support seat 210, a second bracket 211, a third rotating shaft 212, a support rod 213, a second fixed block 214, a fourth rotating shaft 215, a fifth rotating shaft 216, an anchor block 217 and a ground nail 218. A protective shell 3 is arranged on the front of the base 1, and a motor 4 is arranged inside the protective shell 3. A detection mechanism 5 is arranged on the front of the base 1, and the detection mechanism 5 includes a sensor 501, a fixing plate 502, a water level detector 503 and a warning light 504.

[0023] When in use, first select the location that needs support, then place the device in the support area, and ensure that the ground nail 218 is inserted into the ground. The ground nail 218 can provide sufficient tensile strength and rigidity to resist the horizontal and vertical loads in the deep foundation pit project, and can effectively share the horizontal pressure of the soil and reduce the load of the supporting structure. Then, the anchor block 217 is rotated to fit on the ground, and then the anchor block 217 is hammered into the ground with an external hammer or other tools. The anchor block 217 disperses the load into the soil through the large area of ​​its base surface, thereby reducing the pressure concentration effect of the underground structure on the soil, helping to reduce the settlement and deformation of the soil, maintaining the stability of the surrounding soil, and reducing the impact of the foundation pit on the adjacent subway line. Then, the slider 209 is adjusted to move on the slide 208, and the slider 209 slides to drive the support seat 210 to move, and the movement of the support seat 210 drives one end of the support rod 213 to move on the third shaft 212 The support plate 207 rotates and moves upward, and drives the other end of the support rod 213 to rotate on the fourth rotating shaft 215, thereby pulling or pushing the support plate 207 to rotate on the second rotating shaft 206, so as to achieve the angle adjustment of the support plate 207. After the support plate 207 is adjusted to contact with the supporting surface, the L-shaped plate 203 is placed in a suitable limit frame 204, and ensure that the L-shaped plate 203 hooks the limit frame 204, thereby limiting the rotation of the support plate 207. The support plate 207 can effectively keep the soil within the range of the foundation pit to prevent the soil from slipping, collapsing and collapse, and can resist the horizontal pressure of the soil to ensure the stability and safety of the foundation pit. During use, if groundwater appears and accumulates, the water level detector 503 will detect that the water level has reached a certain height, and will transmit information through the sensor 501 and turn on the warning light 504, thereby reminding the staff of groundwater infiltration and warning the staff to take corresponding measures in time.

[0024] Specifically, the top of the base 1 is threadedly connected to the first bracket 201, and the internal thread of the first bracket 201 is threadedly connected to the first shaft 202. The first bracket 201 forms a rotating structure with the L-shaped plate 203 through the first shaft 202. One side of the L-shaped plate 203 is clamped with a limit frame 204. When the support plate 207 is adjusted to contact the supporting surface, the L-shaped plate 203 can be placed in a suitable limit frame 204, and ensure that the L-shaped plate 203 hooks the limit frame 204, thereby limiting the rotation of the support plate 207.

[0025] Specifically, two groups of first fixed blocks 205 are welded on the top of the base 1, and a second rotating shaft 206 is embedded in one side of the two groups of first fixed blocks 205. The first fixed block 205 forms a rotating structure with the support plate 207 through the second rotating shaft 206. The support rod 213 can pull or push the support plate 207 to rotate on the second rotating shaft 206, thereby realizing the angle adjustment of the support plate 207, so that the device can cope with different usage environments.

[0026] Specifically, four groups of slide grooves 208 are opened on the top of the base 1, and the base 1 forms a sliding structure with the slider 209 through the slide grooves 208. The top of the slider 209 is threadedly connected to the support seat 210, and the top of the support seat 210 is threadedly connected to the second bracket 211. The second bracket 211 is internally threadedly connected to the third rotating shaft 212. The second bracket 211 forms a rotating structure with the support rod 213 through the third rotating shaft 212. Two groups of second fixed blocks 214 are welded on the front of the support plate 207, and the fourth rotating shaft 215 is threadedly connected to one side of the second fixed block 214. The support rod 213 and the second fixed block 214 form a rotating structure through the fourth rotating shaft 215. Since the support rod 213 and the support plate 207 form a stable triangular structure, they can bear part of the load on the support plate 207 to reduce the force on the wall, reduce the deformation of the support wall and enhance the stability of the support wall.

[0027] Specifically, four groups of fifth rotating shafts 216 are threadedly connected around the base 1. The base 1 forms a rotating structure with the anchor block 217 through the fifth rotating shaft 216. The anchor block 217 is rotated to fit on the ground, and then the anchor block 217 is hammered into the ground with an external hammer or other tools. The anchor block 217 disperses the load into the soil through the large area of ​​its base surface, thereby reducing the pressure concentration effect of the underground structure on the soil, helping to reduce the settlement and deformation of the soil, maintaining the stability of the surrounding soil, and reducing the impact of the foundation pit on the adjacent subway lines.

[0028] Specifically, a plurality of groups of ground nails 218 are welded to the bottom of the base 1. The material of the ground nails 218 is glass fiber geogrid ground nails. The device is placed in the support area and the ground nails 218 are ensured to be inserted into the ground. The ground nails 218 can provide sufficient tensile strength and rigidity to resist the horizontal and vertical loads in the deep foundation pit project, and can effectively share the horizontal pressure of the soil and reduce the load on the supporting structure.

[0029] Specifically, the front side of the base 1 is threadedly connected to a protective shell 3, the inside of the protective shell 3 is threadedly connected to a motor 4, the front side of the base 1 is threadedly connected to a sensor 501, two sets of fixing plates 502 are welded on the same side of the base 1, a water level detector 503 is threadedly connected between the two sets of fixing plates 502, and the top of the support plate 207 is threadedly connected to a warning light 504. During use, if groundwater appears and accumulates, the water level detector 503 will detect that the water level has reached a certain height, and then it will transmit information through the sensor 501 and turn on the warning light 504, thereby reminding the staff that groundwater infiltration has occurred and warning the staff to take corresponding measures in time.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 deep foundation pit support structure near a subway line, comprising a base (1), a support mechanism (2) and a detection mechanism (5), characterized in that: A support mechanism (2) is arranged above the base (1), and the support mechanism (2) comprises a first bracket (201), a first rotating shaft (202), an L-shaped plate (203), a limit frame (204), a first fixed block (205), a second rotating shaft (206), a support plate (207), a slide groove (208), a slider (209), a support seat (210), a second bracket (211), a third rotating shaft (212), a support rod (213), a second fixed block (214), a fourth rotating shaft (215), a fifth rotating shaft (216), an anchor block (217) and a ground nail (218); a protective shell (3) is arranged on the front of the base (1), and a motor (4) is arranged inside the protective shell (3); a detection mechanism (5) is arranged on the front of the base (1), and the detection mechanism (5) comprises a sensor (501), a fixing plate (502), a water level detector (503) and a warning light (504).

2. The deep foundation pit support structure near a subway line according to claim 1 is characterized in that: The top of the base (1) is threadedly connected to a first bracket (201), the interior of the first bracket (201) is threadedly connected to a first rotating shaft (202), the first bracket (201) forms a rotating structure with an L-shaped plate (203) via the first rotating shaft (202), and one side of the L-shaped plate (203) is clamped with a limiting frame (204).

3. The deep foundation pit support structure near a subway line according to claim 1 is characterized in that: Two groups of first fixing blocks (205) are welded above the base (1), a second rotating shaft (206) is embedded in one side of the two groups of first fixing blocks (205), and the first fixing blocks (205) form a rotating structure with the support plate (207) via the second rotating shaft (206).

4. The deep foundation pit support structure near a subway line according to claim 1, characterized in that: The top of the base (1) is provided with four groups of slide grooves (208), and the base (1) forms a sliding structure with a slider (209) through the slide grooves (208); the top of the slider (209) is threadedly connected to a support seat (210), and the top of the support seat (210) is threadedly connected to a second bracket (211); the second bracket (211) is internally threadedly connected to a third rotating shaft (212); the second bracket (211) forms a rotating structure with a support rod (213) through the third rotating shaft (212); two groups of second fixed blocks (214) are welded on the front of the support plate (207); one side of the second fixed block (214) is threadedly connected to a fourth rotating shaft (215); and the support rod (213) and the second fixed block (214) form a rotating structure through the fourth rotating shaft (215).

5. The deep foundation pit support structure near a subway line according to claim 1, characterized in that: Four groups of fifth rotating shafts (216) are threadedly connected around the base (1), and the base (1) forms a rotating structure with the anchor block (217) via the fifth rotating shafts (216).

6. The deep foundation pit support structure near a subway line according to claim 1, characterized in that: A plurality of groups of ground nails (218) are welded to the bottom of the base (1), and the material of the ground nails (218) is glass fiber geogrid ground nails.

7. The deep foundation pit support structure adjacent to a subway line according to claim 1, characterized in that: The front side of the base (1) is threadedly connected to a protective shell (3), the interior of the protective shell (3) is threadedly connected to a motor (4), the front side of the base (1) is threadedly connected to a sensor (501), two groups of fixing plates (502) are welded on the same side of the base (1), a water level detector (503) is threadedly connected between the two groups of fixing plates (502), and the top of the support plate (207) is threadedly connected to a warning light (504).

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