Foundation pit supporting structure for construction engineering

Abstract

A foundation pit supporting structure of a construction project comprises supporting plates, L-shaped clamping blocks, a strip-shaped fixing plate, a pin, an inclined supporting plate, a positioning frame plate, a sliding pressing plate, a guide sliding rod, a spring, an upper rotating pressing plate and a lower rotating pressing plate, the L-shaped clamping blocks are arranged on the two sides of the supporting plates, the adjacent supporting plates are attached, the side face of the positioning frame plate is attached to the supporting plates, and the lower rotating pressing plate is attached to the side face of the positioning frame plate. The positioning frame plate is provided with a frame plate inner hole, the L-shaped clamping block is matched with the frame plate inner hole, the L-shaped clamping block is inserted into the frame plate inner hole, the positioning frame plate is provided with a plurality of frame plate inner blocks, the frame plate inner blocks are matched with the L-shaped clamping block, the frame plate inner blocks are inserted into the L-shaped clamping block, the sliding pressing plate is matched with the frame plate inner hole, the sliding pressing plate is inserted into the frame plate inner hole, and the sliding pressing plate slides in the frame plate inner hole. The guide sliding rods are connected with the sliding pressing plate, and the guide sliding rods are distributed on the lower portion of the sliding pressing plate.

Description

Technical Field

[0001] This utility model relates to the field of construction engineering, and in particular to a foundation pit support structure for construction engineering. Background Technology

[0002] An existing patent (publication number: CN102587388A) proposes a PRM foundation pit support method, which includes the following steps: based on the actual construction conditions, the stability of the foundation pit wall is calculated and analyzed according to the existing soil stability analysis method to determine the potential sliding surface and the remaining sliding force of the sliding body; the constructed support structure includes a retaining plate, a pressure plate located on the other side of the foundation pit opposite to the retaining plate and connected to the top of the retaining plate, and a fixing structure for fixing the pressure plate. However, this device does not support the bottom of the foundation pit sidewall, which can easily lead to the collapse of the bottom of the foundation pit. Summary of the Invention

[0003] This utility model addresses the aforementioned shortcomings of existing technologies by providing a construction foundation pit support structure that presses the support plates against the sidewalls from three positions (top, middle, and bottom) to prevent soil and rock from rolling off the foundation pit sidewalls during construction foundation pit support. Furthermore, the positioning frame ensures that adjacent support plates are tightly fitted together, preventing them from disconnecting during construction foundation pit support, thus making them an integrated whole and balancing the forces they bear.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A foundation pit support structure for construction projects includes support plates, L-shaped locking blocks, strip fixing plates, pins, inclined support plates, positioning frame plates, sliding pressure plates, guide rods, springs, upper rotating pressure plates, and lower rotating pressure plates. The support plates have multiple L-shaped locking blocks on both sides, with adjacent support plates fitting together. The positioning frame plates have sides that fit against the support plates, and each positioning frame plate has an inner hole. The L-shaped locking blocks are adapted to the inner hole of the frame plate and inserted into it. The positioning frame plate also has multiple inner blocks that are adapted to the L-shaped locking blocks and inserted into them. The sliding pressure plates are adapted to the inner hole of the frame plate and inserted into it, sliding within the inner hole. Guide rods connect to the sliding pressure plates, and a set of guide rods is distributed below the sliding pressure plates.

[0006] The lower part of the positioning frame plate has a strip-shaped protrusion. The guide slide rod passes through the strip-shaped protrusion and slides inside the strip-shaped protrusion. A spring is sleeved on the guide slide rod. One end of the spring abuts against the strip-shaped protrusion, and the other end of the spring abuts against the sliding pressure plate. The upper surface of the sliding pressure plate is in contact with the L-shaped card block.

[0007] The strip fixing plate is connected to the ground by multiple pins. The strip fixing plate has side connecting ears. The upper rotating pressure plate has a pressure plate side groove. The lower rotating pressure plate is adapted to the pressure plate side groove and is inserted into the pressure plate side groove. The lower rotating pressure plate has a lower pressure plate lower sleeve at the bottom. The upper rotating pressure plate has an upper pressure plate lower sleeve at the bottom. The lower pressure plate lower sleeve corresponds to the upper pressure plate lower sleeve. The upper pressure plate lower sleeve and the lower pressure plate lower sleeve are connected to the side connecting ears by a rotating shaft. Beneficial effects

[0008] 1. In use, this utility model involves laying two adjacent support plates together on the side wall of the foundation pit. Adjacent L-shaped clips are inserted into the inner holes of the frame plate, and the inner block of the frame plate is inserted into the L-shaped clips. The positioning frame plate is installed on the side where the adjacent support plates meet. The positioning frame plate ensures the mating structure of the adjacent L-shaped clips, thus keeping the adjacent support plates aligned. A guide rod passes through a strip-shaped protrusion and is connected to a sliding pressure plate by a spring, allowing elastic movement between the sliding pressure plate and the strip-shaped protrusion. The sliding pressure plate is in contact with the L-shaped clips, causing the inner block of the frame plate to lock into the L-shaped clips. This prevents the inner block of the frame plate from sliding out of the L-shaped clips during foundation pit support, ensuring the connection between the positioning frame plate and the L-shaped clips. A strip fixing plate is installed and fixed to the bottom of the foundation pit by multiple pins. The side of the strip fixing plate is in contact with the support plate, positioning the bottom of the support plate and preventing the side of the support plate from disconnecting from the foundation pit side wall during foundation pit support.

[0009] 2. In this utility model, the upper pressure plate and lower sleeve are connected to the side connecting ears via a rotating shaft, allowing the lower parts of the upper and lower rotating pressure plates to be connected to the strip-shaped fixed plate shaft. Both the upper and lower rotating pressure plates can rotate. A double-threaded rod passes through the inner hole of the lower pressure plate and connects to the inner threaded sleeve. By rotating the double-threaded rod, the pressing ball applies pressure to the lower rotating pressure plate, causing the upper part of the lower rotating pressure plate to press against the middle position of the side of the support plate. The inner threaded sleeve is connected to the double-threaded rod via threads. By rotating the inner threaded sleeve, the sleeve side plate presses against the upper rotating pressure plate, causing the upper part of the upper rotating pressure plate to press against the upper part of the side of the support plate. This device presses against the side of the support plate from three positions: upper, middle, and lower, pressing the support plate firmly against the side wall of the foundation pit. This prevents the soil and rocks from rolling off the side wall of the foundation pit during construction. The positioning frame plate ensures that adjacent support plates fit tightly together, preventing them from disconnecting during construction and ensuring that they are integrated and mutually balanced in terms of force. Attached Figure Description

[0010] Figure 1 This is a left-side axonometric drawing of a foundation pit support structure for a construction project as described in this utility model.

[0011] Figure 2 This is a right-view axonometric drawing of a foundation pit support structure for a construction project according to the present invention.

[0012] Figure 3 This is a front view of a foundation pit support structure for construction projects according to the present invention.

[0013] Figure 4 This is a side view of a foundation pit support structure for construction projects according to the present invention.

[0014] Figure 5 This is a top view of a foundation pit support structure for construction projects according to the present invention.

[0015] Figure 6 This is a schematic diagram of the positioning frame plate structure described in this utility model.

[0016] Figure 7 This is a schematic diagram of the internal threaded sleeve and double-ended threaded rod structure described in this utility model. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0018] Example 1:

[0019] A foundation pit support structure for construction projects includes support plates 01, L-shaped locking blocks 02, strip fixing plates 03, pins 04, inclined support plates 05, positioning frame plates 08, sliding pressure plates 11, guide slide rods 13, springs 14, upper rotating pressure plates 15, and lower rotating pressure plates 17. The support plates 01 have multiple L-shaped locking blocks 02 on both sides. Adjacent support plates 01 are fitted together. In use, two adjacent support plates 01 are laid side-by-side on the sidewall of the foundation pit. The side of the positioning frame plate 08 is fitted with the support plates 01. The positioning frame plate 08 has an inner hole 09, and the L-shaped locking blocks 02 are adapted to the inner hole 09. The inner hole 09 of the frame plate is inserted. The positioning frame plate 08 has multiple inner blocks 10. The inner blocks 10 are adapted to the L-shaped locking blocks 02. The inner blocks 10 are inserted into the L-shaped locking blocks 02, so that the positioning frame plate 08 is installed on the side of the joint of the adjacent support plates 01. The positioning frame plate 08 ensures the docking structure of the adjacent L-shaped locking blocks 02, thereby keeping the adjacent support plates 01 aligned. The sliding pressure plate 11 is adapted to the inner hole 09 of the frame plate. The sliding pressure plate 11 is inserted into the inner hole 09 of the frame plate and slides in the inner hole 09 of the frame plate. The guide slide rod 13 is connected to the sliding pressure plate 11. A set of guide slide rods 13 are distributed under the sliding pressure plate 11.

[0020] Example 2:

[0021] The positioning frame plate 08 of this utility model has a strip-shaped protrusion 12 at its lower part. A guide slide rod 13 passes through the strip-shaped protrusion 12 and slides within the strip-shaped protrusion 12. A spring 14 is sleeved on the guide slide rod 13. One end of the spring 14 abuts against the strip-shaped protrusion 12, and the other end of the spring 14 abuts against the sliding pressure plate 11. The upper surface of the sliding pressure plate 11 is in contact with the L-shaped locking block 02. The guide slide rod 13 passes through the strip-shaped protrusion 12 and the spring 14, connecting the sliding pressure plate 11, so that there is elastic movement between the sliding pressure plate 11 and the strip-shaped protrusion 12. The sliding pressure plate 11 is in contact with the L-shaped locking block 02, so that the inner block 10 of the frame plate is locked with the L-shaped locking block 02. During the foundation pit support of the construction project, the inner block 10 of the frame plate is prevented from sliding out of the L-shaped locking block 02, ensuring the connection state between the positioning frame plate 08 and the L-shaped locking block 02.

[0022] Example 3:

[0023] The strip fixing plate 03 of this utility model is connected to the ground by multiple pins 04. The strip fixing plate 03 is installed and fixed at the bottom of the foundation pit by multiple pins 04. The strip fixing plate 03 has a side connecting lug 07. The upper rotating pressure plate 15 has a pressure plate side groove 16. The lower rotating pressure plate 17 is adapted to the pressure plate side groove 16 and is inserted into the pressure plate side groove 16. The lower part of the lower rotating pressure plate 17 has a lower pressure plate lower sleeve 24. The lower part of the upper rotating pressure plate 15 has an upper pressure plate lower sleeve 23. The lower pressure plate lower sleeve 24 corresponds to the upper pressure plate lower sleeve 23. The upper pressure plate lower sleeve 23 and the lower pressure plate lower sleeve 24 are connected to the side connecting lug 07 by a rotating shaft 25, so that the lower parts of the upper rotating pressure plate 15 and the lower rotating pressure plate 17 are axially connected to the strip fixing plate 03. Both the upper rotating pressure plate 15 and the lower rotating pressure plate 17 can rotate.

[0024] Example 4:

[0025] The strip-shaped fixing plate 03 of this utility model has an inclined support plate 05, an internal threaded sleeve 06, a lower rotating pressure plate 17 with a lower pressure plate inner hole 18, a double-ended threaded rod 21 passing through the lower pressure plate inner hole 18, and the lower part of the double-ended threaded rod 21 being threadedly connected to the internal threaded sleeve 06. The double-ended threaded rod 21 has a clamping ball 22, and the upper surface of the lower rotating pressure plate 17 is in contact with the clamping ball 22. By rotating the double-ended threaded rod 21, the clamping ball 22 applies pressure to the lower rotating pressure plate 17, causing the upper part of the lower rotating pressure plate 17 to press against the middle position of the side of the support plate 01. The upper part of the double-ended threaded rod 21 is threadedly connected to an internal threaded sleeve 19, which is inserted into the pressure plate side groove 16. The upper part of the internal threaded sleeve 19 has a sleeve side plate 20, and the lower surface of the sleeve side plate 20 is in contact with the upper rotating pressure plate 15. By rotating the internal threaded sleeve 19, pressure is applied to the lower rotating pressure plate 15. The sleeve side plate 20 presses against the upper rotating pressure plate 15, and the upper part of the upper rotating pressure plate 15 presses against the upper side of the support plate 01. The upper side of the lower rotating pressure plate 17 is in contact with the support plate 01. The upper side of the upper rotating pressure plate 15 is in contact with the support plate 01. The side of the strip fixing plate 03 is in contact with the support plate 01. The strip fixing plate 03 positions the bottom of the support plate 01. During the foundation pit support of the construction project, it prevents the side of the support plate 01 from disconnecting from the foundation pit sidewall. This device presses the side of the support plate 01 from three positions: upper, middle and lower, pressing the support plate 01 tightly onto the foundation pit sidewall. During the foundation pit support of the construction project, it prevents the soil and rocks on the foundation pit sidewall from rolling down. The positioning frame plate 08 makes the adjacent support plates 01 tightly fit together, preventing the two from disconnecting during the foundation pit support of the construction project, so that the two are integrated and the forces they are subjected to are balanced.

[0026] Example 5:

[0027] The installation steps of this utility model are as follows: First, insert the lower sleeve 23 of the upper pressure plate into the side groove 16 of the pressure plate. Connect the lower sleeve 23 of the upper pressure plate and the lower sleeve 24 of the lower pressure plate to the side connecting ear 07 through the rotating shaft 25. Insert the sliding pressure plate 11 into the inner hole 09 of the frame plate. Connect the guide slide rod 13 through the strip protrusion 12 and the spring 14 to the sliding pressure plate 11. Lay the adjacent support plates 01 together on the side wall of the foundation pit. Insert the adjacent L-shaped locking blocks 02 into the inner hole 09 of the frame plate, so that the inner block 10 of the frame plate is inserted into the L-shaped locking block 09. L-shaped locking block 02, the upper surface of sliding pressure plate 11 is attached to L-shaped locking block 02, strip fixing plate 03 is connected to the ground by multiple pins 04, double-headed threaded rod 21 is passed through the inner hole 18 of lower pressure plate and connected to inner threaded sleeve 06, the upper part of double-headed threaded rod 21 is connected to inner threaded sleeve 19 by thread, so that the lower surface of sleeve side plate 20 is attached to upper rotating pressure plate 15, and the upper side of upper rotating pressure plate 15 and lower rotating pressure plate 17 are attached to support plate 01.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A foundation pit support structure for construction projects, characterized in that: The system includes a support plate (01), L-shaped locking blocks (02), strip fixing plates (03), pins (04), inclined support plates (05), positioning frame plates (08), sliding pressure plates (11), guide slide rods (13), springs (14), upper rotating pressure plates (15), and lower rotating pressure plates (17). The support plate (01) has multiple L-shaped locking blocks (02) on both sides, with adjacent support plates (01) fitting together. The side of the positioning frame plate (08) fits into the support plate (01), and the positioning frame plate (08) has an inner hole (09). The L-shaped locking blocks (02) are connected to the frame... The inner hole (09) of the plate is adapted to the L-shaped card block (02) inserted into the inner hole (09) of the frame plate. The positioning frame plate (08) has multiple inner blocks (10) of the frame plate. The inner blocks (10) of the frame plate are adapted to the L-shaped card block (02). The inner blocks (10) of the frame plate are inserted into the L-shaped card block (02). The sliding pressure plate (11) is adapted to the inner hole (09) of the frame plate. The sliding pressure plate (11) is inserted into the inner hole (09) of the frame plate. The sliding pressure plate (11) slides in the inner hole (09) of the frame plate. The guide slide rod (13) is connected to the sliding pressure plate (11). A set of guide slide rods (13) are distributed in the lower part of the sliding pressure plate (11).

2. The foundation pit support structure for construction projects according to claim 1, characterized in that: The lower part of the positioning frame plate (08) has a strip-shaped protrusion (12), the guide slide rod (13) passes through the strip-shaped protrusion (12), the guide slide rod (13) slides inside the strip-shaped protrusion (12), the spring (14) is sleeved on the guide slide rod (13), one end of the spring (14) abuts against the strip-shaped protrusion (12), the other end of the spring (14) abuts against the sliding pressure plate (11), and the upper surface of the sliding pressure plate (11) is in contact with the L-shaped card block (02).

3. The foundation pit support structure for construction projects according to claim 2, characterized in that: The strip fixing plate (03) is connected to the ground by multiple pins (04). The strip fixing plate (03) has a side connecting ear (07). The upper rotating pressure plate (15) has a pressure plate side groove (16). The lower rotating pressure plate (17) is adapted to the pressure plate side groove (16). The lower rotating pressure plate (17) is inserted into the pressure plate side groove (16). The lower rotating pressure plate (17) has a lower pressure plate sleeve (24) at the bottom. The upper rotating pressure plate (15) has an upper pressure plate sleeve (23) at the bottom. The lower pressure plate sleeve (24) corresponds to the upper pressure plate sleeve (23). The upper pressure plate sleeve (23) and the lower pressure plate sleeve (24) are connected to the side connecting ear (07) by a rotating shaft (25).

4. The foundation pit support structure for construction projects according to claim 3, characterized in that: The strip-shaped fixing plate (03) has an inclined support plate (05), the inclined support plate (05) has an internal thread sleeve (06), the lower rotating pressure plate (17) has a lower pressure plate inner hole (18), the double-headed threaded rod (21) passes through the lower pressure plate inner hole (18), the lower part of the double-headed threaded rod (21) is connected to the internal thread sleeve (06) by a thread, the double-headed threaded rod (21) has a pressing ball (22), the upper surface of the lower rotating pressure plate (17) is in contact with the pressing ball (22), the upper part of the double-headed threaded rod (21) is connected to the internal thread sleeve (19) by a thread, and the internal thread sleeve (19) is inserted into the pressure plate side groove (16).

5. A foundation pit support structure for construction projects according to claim 1, characterized in that: The upper part of the internal threaded sleeve (19) has a sleeve side plate (20). The lower surface of the sleeve side plate (20) is in contact with the upper rotating pressure plate (15). The upper side of the lower rotating pressure plate (17) is in contact with the support plate (01). The upper side of the upper rotating pressure plate (15) is in contact with the support plate (01). The side of the strip fixing plate (03) is in contact with the support plate (01).

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