Water-rich complex geological foundation pit supporting system

Abstract

The utility model discloses a water-rich complex geology foundation pit supporting system, and particularly relates to the field of constructional engineering, the water-rich complex geology foundation pit supporting system comprises an underground diaphragm wall, a plurality of convex blocks are arranged at the top end of the outer side of the underground diaphragm wall, each convex block is fixedly connected with a group of clamping mechanisms, and the convex blocks are clamped by the clamping mechanisms. Each set of clamping mechanism is fixedly connected with an extending plate, each extending plate is in threaded connection with a vertical adjusting screw rod, the bottom of each adjusting screw rod is rotationally connected with a T-shaped inserting block, the two sides of the top of each T-shaped inserting block are rotationally connected with a folding plate respectively, and each folding plate is overturned to be horizontal in a limited mode. Due to the fact that the posture of the underground diaphragm wall is adjusted with different protruding blocks as stress points, the safety and stability of the whole foundation pit can be effectively guaranteed, and the construction progress is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of construction engineering, and in particular relates to a water-rich complex geological foundation pit support system. Background Art

[0002] With the development of science and technology, the construction industry is also developing rapidly, and there are more and more large buildings. The application of deep foundation pit support construction technology in construction projects is becoming more frequent. Due to the geological characteristics of some soft soil areas, such as high groundwater level, low soft soil bearing capacity, and poor self-stability, the foundation pit support structure will sink and tilt.

[0003] Due to the construction in water-rich and complex geological areas, the foundation pit support structure will sink and tilt over time, making it difficult to ensure the subsequent foundation pit excavation and building construction, affecting the construction progress and safety. Therefore, a new type of foundation pit support system with water-rich and complex geological conditions is needed. Utility Model Content

[0004] In order to solve the above problems, the utility model discloses a water-rich complex geological foundation pit support system.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A water-rich complex geological foundation pit support system includes an underground continuous wall, wherein a plurality of protrusions are arranged on the outer top of the underground continuous wall, each of the protrusions is fixedly connected to a group of clamping mechanisms, and the protrusions are clamped by the clamping mechanisms, each group of the clamping mechanisms is fixedly connected to an extension plate, each of the extension plates is threadedly connected to a vertical adjusting screw, the bottom of each adjusting screw is rotatably connected to a T-shaped plug, and the top two sides of each T-shaped plug are respectively rotatably connected to a folding plate, and each folding plate is limited and flipped to the horizontal.

[0007] As a preferred technical solution of the utility model, the underground continuous wall is square, and the protrusions are arranged on the top of the four corners of the underground continuous wall.

[0008] As a preferred technical solution of the utility model, each group of the clamping mechanism includes: a mounting shell in contact with the top of the protrusion, an extrusion block is vertically slidably installed in the inner cavity of the mounting shell, and the extrusion block is provided with two inclined surfaces distributed in an eight-shaped pattern, the bottom of the mounting shell is horizontally slidably connected to a clamping block with two clamping protrusions, and the inclined surfaces at the top of the two clamping blocks are slidably fitted with the inclined surfaces of the extrusion blocks, the two clamping blocks are commonly connected to a spring, and the spring is in a compressed state, the top of the extrusion block is rotatably connected to a driving screw, and the driving screw is threadedly connected to the mounting shell.

[0009] As a preferred technical solution of the utility model, each of the clamping blocks is provided with a circular hole, and the circular hole is adapted to the end of the inserted spring, and a groove horizontally slidably connected to the mounting shell is opened in the middle of each of the clamping blocks.

[0010] As a preferred technical solution of the utility model, the protrusion narrows from top to bottom, and the bottom of the clamping block fits the outer surface of the protrusion.

[0011] As a preferred technical solution of the utility model, two rotating shafts are fixedly installed at the lower end of the horizontal plate of each T-shaped plug block, and the two rotating shafts fixedly connected to the same T-shaped plug block are symmetrically arranged about the vertical plate of the T-shaped plug block, and each of the rotating shafts is rotatably connected to a folding plate.

[0012] The beneficial effects of the utility model are:

[0013] 1. After the underground continuous wall and the protrusion are built, a T-shaped plug is inserted into the ground next to the protrusion. The folding plate connected to the T-shaped plug is turned over to fit the ground surface horizontally to increase the contact area between the T-shaped plug and the ground surface. At the same time, the adjacent protrusion is clamped by a clamping mechanism. Then, a manual wrench or mechanical device can be used to rotate the adjustment screw. The T-shaped plug remains fixed. The adjustment screw drives the protrusion to move up and down through the extension plate and the clamping mechanism to adjust the posture deviation of the underground continuous wall during the water-rich and complex geological settlement process. Thanks to the underground continuous wall using different protrusions as the force points for posture adjustment, the inclination of the foundation pit support structure is reduced, which can effectively ensure the overall safety and stability of the foundation pit and ensure the construction progress.

[0014] Second, the clamping mechanism is used to clamp the protrusion for adjustment. After the construction is completed, the clamping mechanism, extension plate, adjustment screw, T-shaped plug, folding plate and rotating shaft can be recovered, which improves the versatility of the construction equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the underground continuous wall and the protrusions in the embodiment of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the clamping mechanism, the extension plate, the adjusting screw, the T-shaped plug and the folding plate of the embodiment of the utility model;

[0018] Figure 4 An exploded view of the clamping mechanism, the extension plate, the T-shaped plug block, the folding plate and the rotating shaft of the embodiment of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the clamping mechanism of an embodiment of the utility model;

[0020] Figure 6 This is an exploded view of the clamping mechanism of the embodiment of the utility model without the mounting shell.

[0021] List of Figure Symbols:

[0022] 1. Underground continuous wall; 2. Bump;

[0023] 3. Clamping mechanism; 301. Mounting shell; 302. Extrusion block; 303. Clamping block; 304. Spring; 305. Driving screw;

[0024] 4. Extension plate; 5. Adjusting screw; 6. T-shaped plug; 7. Folding plate; 8. Rotating shaft. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0026] See also Figure 1-6 A water-rich complex geological foundation pit support system includes an underground continuous wall 1, and a plurality of protrusions 2 are arranged on the outer top of the underground continuous wall 1. The protrusions 2 are protrusions extending from the underground continuous wall 1 cast by reinforced concrete. The shape of the underground continuous wall 1 is determined by the shape of the foundation pit, and the protrusions 2 are distributed as evenly as possible on the top of the underground continuous wall 1. When a square foundation pit is excavated, the underground continuous wall 1 is square, and the protrusions 2 are arranged on the top of the four corners of the underground continuous wall 1.

[0027] Each protrusion 2 is fixedly connected to a group of clamping mechanisms 3, and the protrusion 2 is clamped by the clamping mechanisms 3. Each group of clamping mechanisms 3 is fixedly connected to an extension plate 4, and each extension plate 4 is threadedly connected to a vertical adjustment screw 5. A hexagonal groove is provided on the top of each adjustment screw 5, which is convenient for rotating the adjustment screw 5 using a manual wrench or a mechanical device. The bottom of each adjustment screw 5 is rotatably connected to a T-shaped plug 6. A folding plate 7 is rotatably connected to both sides of the top of each T-shaped plug 6, and each folding plate 7 is limited and flipped to the horizontal. Two rotating shafts 8 are fixedly installed at the lower end of the horizontal plate of each T-shaped plug 6, and the two rotating shafts 8 fixedly connected to the same T-shaped plug 6 are symmetrically arranged about the vertical plate of the T-shaped plug 6, and each rotating shaft 8 is rotatably connected to a folding plate 7. When the T-shaped plug 6 is not inserted into the ground, the folding plate 7 hangs vertically. After the T-shaped plug 6 is inserted into the ground, the folding plate 7 connected to the T-shaped plug 6 is turned over to fit the ground surface horizontally, thereby increasing the contact area between the T-shaped plug 6 and the ground surface and reducing the probability of the T-shaped plug 6 sinking in water-rich and complex geology. The vertical plate of the T-shaped plug 6 is flat, and after being inserted into the ground, the T-shaped plug 6 can be prevented from rotating together with the adjusting screw 5 when it is rotated.

[0028] Each set of clamping mechanisms 3 includes: a mounting shell 301 in contact with the top of the protrusion 2. An extrusion block 302 is vertically slidably mounted in the inner cavity of the mounting shell 301, and the extrusion block 302 is provided with two inclined surfaces distributed in an eight-shaped pattern. The bottom of the mounting shell 301 is horizontally slidably connected with two clamping blocks 303 for clamping the protrusion 2, and the inclined surfaces at the tops of the two clamping blocks 303 are slidably fitted with the inclined surfaces of the extrusion block 302. When the extrusion block 302 moves vertically downward, its two inclined surfaces can squeeze the two clamping blocks 303 close to each other to clamp the protrusion 2. The two clamping blocks 303 are connected together with a spring 304, and the spring 304 is in a compressed state. After the extrusion block 302 moves vertically upward, the spring 304 pushes the two clamping blocks 303 to separate from each other and release the clamping of the protrusion 2. The top of the extrusion block 302 is rotatably connected with a drive screw 305, and the drive screw 305 is threadedly connected to the mounting shell 301. Each driving screw 305 has a hexagonal groove at the top, which is convenient for using a human wrench or a mechanical device to rotate the driving screw 305. Rotating the driving screw 305 can drive the extrusion block 302 to move vertically.

[0029] Each clamping block 303 is provided with a circular hole, and the circular hole is adapted to the end of the inserted spring 304. The end of the spring 304 is inserted into the circular hole to avoid displacement. A groove is provided in the middle of each clamping block 303 to be horizontally slidably connected to the mounting shell 301.

[0030] When the two clamping blocks 303 of the clamping mechanism 3 clamp the convex block 2, the bottom of the clamping block 303 fits the outer surface of the convex block 2, so that the underground continuous wall 1 is adjusted with the convex block 2 as the force point.

[0031] Working principle:

[0032] During construction, a special excavation equipment (such as a chain bucket excavator, a grab bucket or a slot milling machine) is used to dig a deep and narrow trench at a predetermined position, and then reinforced concrete is poured in the trench to form an underground continuous wall 1 and a protrusion 2. The underground continuous wall 1 is constructed in sections to reduce the probability of trench collapse. After the concrete solidifies, a T-shaped plug 6 is inserted into the ground next to the protrusion 2, and a folding plate 7 rotatably connected to the T-shaped plug 6 is turned over to fit the ground surface horizontally, thereby increasing the contact area between the T-shaped plug 6 and the ground surface. At the same time, a clamping mechanism 3 is used to clamp the adjacent protrusion 2, and then a manual wrench or a mechanical device can be used to rotate the adjusting screw 5, and the T-shaped plug 6 remains fixed. The adjusting screw 5 drives the protrusion 2 to move up and down through the extension plate 4 and the clamping mechanism 3, so as to adjust the posture deviation of the underground continuous wall 1 during the water-rich complex geological settlement process. Finally, a foundation pit can be excavated in the center of the underground continuous wall 1 under the support of the underground continuous wall 1;

[0033] When the clamping mechanism 3 clamps the adjacent protrusion 2, a manual wrench or mechanical device is used to rotate the driving screw 305, and the driving screw 305 drives the extrusion block 302 to move vertically downward. Under the extrusion of the inclined surface of the extrusion block 302, the two clamping blocks 303 in contact with the extrusion block 302 approach each other to clamp the protrusion 2.

[0034] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A water-rich complex geological foundation pit support system, comprising an underground continuous wall (1), characterized in that: A plurality of protrusions (2) are arranged at the top of the outer side of the underground continuous wall (1), each of the protrusions (2) is fixedly connected to a group of clamping mechanisms (3), and the protrusions (2) are clamped by the clamping mechanisms (3), each group of the clamping mechanisms (3) is fixedly connected to an extension plate (4), each of the extension plates (4) is threadedly connected to a vertical adjustment screw (5), the bottom of each adjustment screw (5) is rotatably connected to a T-shaped plug (6), and the top two sides of each T-shaped plug (6) are respectively rotatably connected to a folding plate (7), and each folding plate (7) is limited to flip to the horizontal.

2. A water-rich complex geological foundation pit support system according to claim 1, characterized in that: The underground continuous wall (1) is square, and the protrusions (2) are arranged on the tops of the four corners of the underground continuous wall (1).

3. A water-rich complex geological foundation pit support system according to claim 1, characterized in that: Each group of the clamping mechanisms (3) comprises: a mounting shell (301) in contact with the top of the protrusion (2); an extrusion block (302) is vertically slidably mounted in the inner cavity of the mounting shell (301); and the extrusion block (302) is provided with two inclined surfaces distributed in an "eight" shape; the bottom of the mounting shell (301) is horizontally slidably connected with two clamping blocks (303) for clamping the protrusion (2); and the inclined surfaces at the tops of the two clamping blocks (303) are slidably fitted with the inclined surfaces of the extrusion blocks (302); the two clamping blocks (303) are commonly connected with a spring (304), and the spring (304) is in a compressed state; the top of the extrusion block (302) is rotatably connected with a driving screw (305), and the driving screw (305) is threadedly connected to the mounting shell (301).

4. A water-rich complex geological foundation pit support system according to claim 3, characterized in that: Each of the clamping blocks (303) is provided with a circular hole, and the circular hole is adapted to the end of the inserted spring (304), and a groove is provided in the middle of each of the clamping blocks (303) for horizontal sliding connection with the mounting shell (301).

5. The water-rich complex geological foundation pit support system according to claim 3 is characterized in that: The protrusion (2) narrows from top to bottom, and the bottom of the clamping block (303) fits the outer surface of the protrusion (2).

6. A water-rich complex geological foundation pit support system according to claim 1, characterized in that: Two rotating shafts (8) are fixedly mounted at the lower end of the horizontal plate of each T-shaped plug block (6), and the two rotating shafts (8) fixedly connected to the same T-shaped plug block (6) are symmetrically arranged with respect to the vertical plate of the T-shaped plug block (6), and each rotating shaft (8) is rotatably connected to a folding plate (7).

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