Soil retaining plate structure for protecting soil on inner side of irregular foundation pit

Abstract

The utility model discloses a breast board structure for protecting side soil in an irregular foundation pit, and provides a breast board which is convenient to arrange for the side soil in the irregular foundation pit with more bends. A left upper cantilever block (2) and a left lower cantilever block (3) are fixedly arranged on the left side vertical face of a first box type soil retaining plate (1) in the up-down vertical direction at intervals, a left upper through hole (4) is formed in the left upper cantilever block, a left lower through hole (5) is formed in the left lower cantilever block, and the central axis of the left upper through hole coincides with the central axis of the left lower through hole. Two cantilever blocks on the right side vertical face of a first box type soil retaining plate (1) and two cantilever blocks on the left side vertical face of a second box type soil retaining plate (20) are in butt joint in an up-down corresponding mode, a pin shaft (21) is inserted into the four cantilever blocks, and connection of the two box type soil retaining plates is achieved. The two connected box type soil retaining plates can rotate through the hinge-shaped hinging mechanism so as to adapt to the changing angle of the soil body on the side of the foundation pit.

Description

Technical Field

[0001] The utility model relates to a foundation pit, in particular to a retaining plate structure for protecting soil at the inner side of the foundation pit. Background Art

[0002] In the construction of housing, the foundation pit is first excavated. As the depth of the foundation pit changes, the side of the foundation pit needs to be supported to ensure the safety of the construction in the foundation pit and the surrounding environment of the foundation pit. The retaining plate structure is a common structure in the foundation pit support. The existing retaining plate fixing method is relatively complicated and the installation efficiency is also low; for example, the announcement number CN 216194909 U's patent discloses a foundation pit retaining structure for building construction, providing a structure that uses the deadweight of the foundation pit soil to fix it and flips it through the action of a cylinder to retain the soil of the foundation pit, including a fixing component and a retaining component, the retaining component is hinged on the fixing component, a cylinder is arranged between the retaining component and the fixing component, the cylinder, the fixing component and the retaining component are combined to form a triangle, the fixing component includes a base, a front plug-in plate, an upper plug-in plate, a reinforcing plate, and a fixing seat, the retaining component includes an articulated ear, a main retaining beam, and an auxiliary retaining beam, the bottom of the main retaining beam is provided with an articulated ear, the articulated ear is correspondingly connected to the fixed ear, the main retaining beam is a hollow structure, the auxiliary retaining beam is slidably placed in the main retaining beam, can be quickly inserted and fixed, and is tightened by the deadweight of the soil; but when encountering an irregularly shaped building foundation pit, especially when there are many bends in the soil on the side of the foundation pit, how to conveniently arrange the retaining plate becomes a difficult problem that needs to be solved on the construction site. Summary of the invention

[0003] The utility model provides a retaining plate structure for protecting the side soil in an irregular foundation pit, and provides a retaining plate that is convenient to lay out for the side soil in the irregular foundation pit with many bends.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A retaining plate structure for protecting the soil at the side of an irregular foundation pit, comprising a first box-type retaining plate and a second box-type retaining plate, wherein the structure of the first box-type retaining plate is exactly the same as that of the second box-type retaining plate, wherein an upper left cantilever block and a lower left cantilever block are fixedly arranged at intervals along the vertical direction, an upper left through hole is arranged on the upper left cantilever block, and a lower left through hole is arranged on the lower left cantilever block, wherein the central axis of the upper left through hole coincides with the central axis of the lower left through hole; and an upper right cantilever block and a lower right cantilever block are fixedly arranged at intervals along the vertical direction, an upper right through hole is arranged on the upper right cantilever block, and a lower right through hole is arranged on the lower right cantilever block. Through hole, the central axis of the upper right through hole coincides with the central axis of the lower right through hole, the upper right cantilever block is arranged above the extension surface of the top end surface of the upper left cantilever block, and the lower right cantilever block is arranged between the extension surface of the top end surface of the lower left cantilever block and the extension surface of the bottom end surface of the upper left cantilever block; the lower bottom surface of the first box-type retaining plate is evenly distributed with box-type retaining plate lower inserted steel nails; an oblique support rod is arranged between the inner side facade of the first box-type retaining plate and the bottom of the foundation pit; a second box-type retaining plate is arranged side by side on the right side of the first box-type retaining plate, and the two cantilever blocks on the left side facade of the second box-type retaining plate and the upper right cantilever block and the lower right cantilever block on the right side facade of the first box-type retaining plate are arranged correspondingly up and down, and pins are movably inserted between the four cantilever blocks.

[0006] A hinge seat is arranged on the front side elevation of the first box-type retaining plate, the upper end of the diagonal support rod is hinged on the hinge seat, the lower end of the diagonal support rod is connected with a bottom angle block, and the bottom bottom surface of the bottom angle block is evenly distributed with bottom foot block fixing steel nails.

[0007] A telescopic plate is movably inserted in the first box-type earth retaining plate, a telescopic plate fixing pin connection hole is arranged on the telescopic plate, a box-type earth retaining plate fixing pin connection hole is arranged on the first box-type earth retaining plate, and a connecting pin is arranged between the telescopic plate fixing pin connection hole and the box-type earth retaining plate fixing pin connection hole; anti-slip tongues are arranged on both sides of the lower end of the telescopic plate, and limited step plates are arranged on both sides of the top end of the first box-type earth retaining plate.

[0008] The utility model is particularly suitable for foundation pits with irregular shapes. The two connected box-type earth retaining plates can be rotated by a hinge-shaped articulated mechanism to achieve adjustment of various angles to adapt to the changing angle of the soil at the side of the foundation pit, thereby improving the fit between the earth retaining plate structure and the soil at the side of the foundation pit. The plate body is inserted into the soil by steel nails, and the earth retaining plate is supported by diagonal bracing rods at the same time, so that the earth retaining plate can maintain good stability when subjected to lateral pressure, and effectively prevent the collapse of the side wall of the foundation pit; when the depth of the foundation pit is higher than the height of the earth retaining plate, support can be provided by pulling out the telescopic plate, that is, by raising the telescopic plate to a suitable height, the limit bolts are inserted into the corresponding through holes, thereby supporting and stabilizing the side wall of the foundation pit as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model;

[0010] Figure 2 It is a structural schematic diagram of a first box-type earth retaining plate 1 of the utility model;

[0011] Figure 3 It is a schematic structural diagram of the telescopic plate 14 of the utility model. DETAILED DESCRIPTION

[0012] The utility model is described in detail below with reference to the accompanying drawings:

[0013] A retaining plate structure for protecting the soil at the inner side of an irregular foundation pit, comprising a first box-type retaining plate 1 and a second box-type retaining plate 20, wherein the structure of the first box-type retaining plate 1 is completely the same as that of the second box-type retaining plate 20, wherein an upper left cantilever block 2 and a lower left cantilever block 3 are fixedly arranged at intervals along the vertical direction on the left side of the first box-type retaining plate 1, an upper left through hole 4 is arranged on the upper left cantilever block 2, and a lower left through hole 5 is arranged on the lower left cantilever block 3, wherein the central axis of the upper left through hole 4 coincides with the central axis of the lower left through hole 5; On the right side elevation of a box-type retaining plate 1, along the vertical direction, an upper right cantilever block 6 and a lower right cantilever block 7 are fixedly arranged at intervals, an upper right through hole 8 is arranged on the upper right cantilever block 6, and a lower right through hole 9 is arranged on the lower right cantilever block 7. The central axis of the upper right through hole 8 coincides with the central axis of the lower right through hole 9. The upper right cantilever block 6 is arranged above the extension surface of the top end surface of the upper left cantilever block 2, and the lower right cantilever block 7 is arranged between the extension surface of the top end surface of the lower left cantilever block 3 and the extension surface of the bottom end surface of the upper left cantilever block 2; at the lower bottom of the first box-type retaining plate 1 The surface is evenly distributed with steel nails 22 inserted under the box-type retaining plate; an oblique support rod 11 is arranged between the inner side elevation of the first box-type retaining plate 1 and the bottom of the foundation pit; a second box-type retaining plate 20 is arranged side by side on the right side of the first box-type retaining plate 1, and the two cantilever blocks on the left side elevation of the second box-type retaining plate 20 correspond to the upper right cantilever block 6 and the lower right cantilever block 7 on the right side elevation of the first box-type retaining plate 1, and a pin shaft 21 is movably inserted between the four cantilever blocks; during on-site construction, the first box-type retaining plate 1 is first placed on one side of the turning soil body at the side of the foundation pit, The first box-type retaining plate 1 is fixed to the bottom of the pit by inserting steel nails 22 under the box-type retaining plate, and then the second box-type retaining plate 20 is placed in the foundation pit, and the two cantilever blocks on the right side facade of the first box-type retaining plate 1 and the two cantilever blocks on the left side facade of the second box-type retaining plate 20 are connected together correspondingly up and down, and the pin shaft 21 is inserted into the four cantilever blocks to realize the connection of the two box-type retaining plates; then, according to the turning angle of the turning soil body at the side of the foundation pit, the second box-type retaining plate 20 is rotated so that the second box-type retaining plate 20 is abutted against the soil body at the side of the foundation pit after the turn.

[0014] A hinge seat 10 is arranged on the front side facade of the first box-type retaining plate 1, the upper end of the diagonal support rod 11 is hinged on the hinge seat 10, and a bottom angle block 12 is connected to the lower end of the diagonal support rod 11. The bottom bottom surface of the bottom angle block 12 is evenly distributed with bottom foot block fixing steel nails 13; a through hole can be arranged in the middle of the bottom angle block 12. When the bottom angle block 12 is positioned, a large pin is driven into the bottom ground of the foundation pit through the through hole to further stabilize the bottom foot block.

[0015] A telescopic plate 14 is movably inserted in the first box-type earth retaining plate 1, a telescopic plate fixing pin connection hole 15 is arranged on the telescopic plate 14, a box-type earth retaining plate fixing pin connection hole 16 is arranged on the first box-type earth retaining plate 1, and a connecting pin 17 is arranged between the telescopic plate fixing pin connection hole 15 and the box-type earth retaining plate fixing pin connection hole 16; anti-slip tongues 18 are arranged on both sides of the lower end of the telescopic plate 14, and limiting step plates 19 are arranged on both sides of the top end of the first box-type earth retaining plate 1 to prevent the telescopic plate 14 from slipping out of the first box-type earth retaining plate 1 when the telescopic plate 14 is pulled up.

Claims

1. A retaining plate structure for protecting the inner side soil of an irregular foundation pit, comprising a first box-type retaining plate (1) and a second box-type retaining plate (20), wherein the structure of the first box-type retaining plate (1) is completely the same as the structure of the second box-type retaining plate (20), and is characterized in that: On the left side elevation of the first box-shaped earth retaining plate (1), an upper left cantilever block (2) and a lower left cantilever block (3) are fixedly arranged at intervals along the vertical direction; an upper left through hole (4) is arranged on the upper left cantilever block (2); a lower left through hole (5) is arranged on the lower left cantilever block (3); the central axis of the upper left through hole (4) coincides with the central axis of the lower left through hole (5); on the right side elevation of the first box-shaped earth retaining plate (1), an upper right cantilever block (6) and a lower right cantilever block (7) are fixedly arranged at intervals along the vertical direction; an upper right through hole (8) is arranged on the upper right cantilever block (6); a lower right through hole (9) is arranged on the lower right cantilever block (7); the central axis of the upper right through hole (8) coincides with the central axis of the lower right through hole (9); the upper right cantilever block (6) is arranged above the extended surface of the top end surface of the upper left cantilever block (2), and the lower right cantilever block (7) is arranged between the extended surface of the top end surface of the lower left cantilever block (3) and the extended surface of the bottom end surface of the upper left cantilever block (2); box-type retaining plate lower inserting steel nails (22) are evenly distributed on the lower bottom surface of the first box-type retaining plate (1); an oblique support rod (11) is arranged between the inner side vertical surface of the first box-type retaining plate (1) and the bottom of the foundation pit; a second box-type retaining plate (20) is arranged side by side on the right side of the first box-type retaining plate (1), and the two cantilever blocks on the left side vertical surface of the second box-type retaining plate (20) and the upper right cantilever block (6) and the lower right cantilever block (7) on the right side vertical surface of the first box-type retaining plate (1) are arranged in correspondence with each other, and a pin shaft (21) is movably inserted between the four cantilever blocks.

2. The retaining plate structure for protecting the soil at the inner side of an irregular foundation pit according to claim 1 is characterized in that: A hinge seat (10) is provided on the front side elevation of the first box-shaped earth retaining plate (1), the upper end of the diagonal brace (11) is hinged on the hinge seat (10), the lower end of the diagonal brace (11) is connected to a bottom angle block (12), and bottom foot block fixing steel nails (13) are evenly distributed on the lower bottom surface of the bottom angle block (12).

3. A retaining plate structure for protecting the inner side soil of an irregular foundation pit according to claim 1 or 2, characterized in that: A telescopic plate (14) is movably inserted in the first box-shaped retaining plate (1), a telescopic plate fixing pin connection hole (15) is provided on the telescopic plate (14), a box-shaped retaining plate fixing pin connection hole (16) is provided on the first box-shaped retaining plate (1), and a connection pin (17) is provided between the telescopic plate fixing pin connection hole (15) and the box-shaped retaining plate fixing pin connection hole (16); anti-slip tongues (18) are provided on both sides of the lower end of the telescopic plate (14), and limited step plates (19) are provided on both sides of the top end of the first box-shaped retaining plate (1).

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