Flexible temporary foundation pit supporting device

Abstract

The utility model discloses a flexible temporary foundation pit supporting device, which relates to the technical field of building construction and comprises a strip-shaped foundation, a breast board assembly is arranged at the upper end of the strip-shaped foundation, and a fixing assembly used for fixing the breast board assembly is arranged at the upper end of the breast board assembly. The soil retaining plate assembly comprises a plurality of stand columns arranged at the upper end of the strip-shaped foundation at intervals, a cross beam is detachably arranged between every two adjacent stand columns, and a flexible soil retaining layer is detachably arranged on the soil retaining side of a plane formed by the stand columns and the cross beams. The fixing assembly comprises a tensioning piece connected to the upper end of the stand column, and a fixing column used for being fixed to the ground is arranged at the end, away from the stand column, of the tensioning piece. The stable soil retaining effect can be achieved in the simple assembling process, the whole device can be installed and disassembled on site, repeated use can be achieved, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a flexible temporary foundation pit supporting device. Background Art

[0002] Foundation pit refers to the space below the ground excavated for the construction of buildings and structures. It is a temporary project, and its purpose is to provide a space so that the foundation of the building and structure and its own masonry work can be carried out in the position specified by the design. Some shallow foundation pits are mainly temporarily supported by slope excavation, sprayed anchor support, etc. according to the specific conditions of the soil quality and construction space.

[0003] Although the construction method of slope excavation has a simple process, in actual operation, the amount of earth excavation is relatively large. If the slope is steep, landslides are likely to occur. If the slope is gentle, the amount of excavation and backfilling will be large to a certain extent, increasing the construction cost.

[0004] Sprayed anchor support is a support measure using anchor rods and shotcrete. The main function of the anchor rod is to enhance the friction between the joint surface and the rock and soil layer and enhance the stability of the soil layer. The function of shotcrete is to reinforce the soil and prevent it from peeling off or falling. However, there are problems such as anchor rods, wire mesh, shotcrete, etc. that cannot be recycled and the construction cost is high. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the technical problem to be solved by the utility model is: how to reduce the foundation pit support cost on the basis of ensuring construction stability.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] The flexible temporary foundation pit support device comprises a strip foundation, a retaining plate assembly is arranged at the upper end of the strip foundation, and a fixing assembly for fixing the retaining plate assembly is arranged at the upper end of the retaining plate assembly;

[0008] The retaining plate assembly comprises a plurality of columns spaced apart at the upper end of the strip foundation, a plurality of beams are detachably provided between two adjacent columns, the plurality of columns and the plurality of beams form a planar retaining frame, and the retaining frame is detachably provided with a flexible retaining layer;

[0009] The fixing assembly comprises a tensioning member connected to the upper end of the column, and one end of the tensioning member away from the column is provided with a fixing column for fixing on the ground.

[0010] Furthermore, the retaining layer is made of fiber cloth.

[0011] Furthermore, a first fixing member is provided between the retaining layer and the column, and a second fixing member is provided between the retaining layer and the beam.

[0012] Furthermore, the first fixing member includes a column sleeve connected to the retaining layer, the column sleeve is sleeved on the outer side of the column, the column sleeve is provided with a first break parallel to the axis, and multiple first binding holes are provided on both sides of the first break; the second fixing member includes a beam sleeve connected to the retaining layer, the beam sleeve is sleeved on the outer side of the beam, the beam sleeve is provided with a second break parallel to the axis, and multiple second binding holes are provided on both sides of the second break.

[0013] Furthermore, a plurality of corresponding channel steels are arranged on two opposite surfaces of two adjacent columns, the channel steels are provided with screw holes, and both ends of the crossbeam are respectively fixed to the two channel steels on the corresponding sides by bolt structures.

[0014] Furthermore, the tensioning member is a cable fixedly connected to the top of the column, and one end of the cable away from the column is connected to the fixed column.

[0015] Furthermore, the column is provided with an air-facing side and a retaining side, the fixed columns are arranged at intervals on the retaining side of the column, and the extension path of the tension member is perpendicular to the retaining layer.

[0016] The beneficial effects of the utility model are:

[0017] The flat foundation pit side wall retaining structure composed of strip foundations, columns, beams and retaining layers can ensure a stable retaining effect during a relatively simple assembly process, and the entire device can be installed and disassembled on site and can be used repeatedly, thereby reducing construction costs and improving economic benefits. In addition, the tensioning parts and fixed columns can ensure that the entire device has good compressive resistance and supporting strength, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the right side view of the utility model;

[0019] Figure 2 It is the front view of the utility model;

[0020] Figure 3 This is a schematic diagram of the channel steel structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the first fixing member of the utility model;

[0022] Figure 5 It is a schematic diagram of the second fixing member of the utility model;

[0023] Markings in the figure are, 1-strip foundation, 2-column, 3-crossbeam, 4-retaining layer, 5-column sleeve, 6-first fracture, 7-first binding hole, 8-second fracture, 9-second binding hole, 10-tensioning piece, 11-fixed column, 12-air side, 13-retaining side, 14-channel steel. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] according to Figure 1 , Figure 2 As shown, the embodiment of the present application proposes a flexible temporary foundation pit support device, including a strip foundation 1, a retaining plate assembly is arranged at the upper end of the strip foundation 1, and a fixing assembly for fixing the retaining plate assembly is arranged at the upper end of the retaining plate assembly. The retaining plate assembly includes a plurality of columns 2 arranged at intervals at the upper end of the strip foundation 1, a plurality of beams 3 are detachably arranged between two adjacent columns 2, a retaining frame formed by the plurality of columns 2 and the plurality of beams 3 is detachably provided with a flexible retaining layer 4. The fixing assembly includes a tensioning member 10 connected to the upper end of the column 2, and a fixing column 11 for fixing to the ground is arranged at one end of the tensioning member 10 away from the column 2.

[0026] It should be noted that the planar foundation pit side wall retaining structure composed of strip foundation 1, columns 2, beams 3 and retaining layer 4 can ensure a stable retaining effect during a relatively simple assembly process, and the entire device can be installed and disassembled on site and can be used repeatedly, thereby reducing construction costs and improving economic benefits. In addition, the tensioning members 10 and fixed columns 11 can ensure that the entire device has good compressive resistance and supporting strength, thereby improving stability.

[0027] Specifically, the strip foundation 1 can be a prefabricated foundation or a cast-in-place concrete foundation. The columns 2 can achieve a stable fixing effect by extending reinforcing bars or bolt structures into the strip foundation 1, ensuring that the columns 2 will not be displaced or shaken at will. At the same time, the columns 2 can be round steel or square steel, which is convenient for processing or purchasing. The crossbeam 3 can be an angle steel or a square steel, and can be easily assembled on site by being detachably arranged. The detachable method can be an inlaid clamping structure or a bolted connection structure.

[0028] like Figure 3 As shown, a plurality of corresponding channel steels 14 are arranged on two opposite surfaces of two adjacent columns 2, and screw holes are opened in the channel steels 14. The two ends of the beam 3 are respectively fixed to the two corresponding channel steels 14 on both sides by a bolt structure. The channel body size of the channel steel 14 is adapted to the size of the beam 3, which can ensure accurate positioning of the beam 3, and the bolt structure can achieve the effect of easy installation and disassembly.

[0029] Moreover, the flexible retaining layer 4 in this embodiment can be realized as a fiber cloth, which has good strength and supporting performance, and prevents tearing or plastic deformation when subjected to a large side pressure of the retaining side 13. Moreover, the fiber cloth of the flexible material is convenient and light in weight, and is easy to unfold and fold during installation and disassembly, thereby improving efficiency. In order to improve the installation stability of the retaining layer 4, a first fixing member is provided between the retaining layer 4 and the column 2, and a second fixing member is provided between the retaining layer 4 and the beam 3.

[0030] Specifically, Figure 4 , Figure 5 As shown, the first fixing member includes a column sleeve 5 connected to the retaining layer 4, the column sleeve 5 is sleeved on the outside of the column 2, the column sleeve 5 is provided with a first break 6 parallel to the axis, and a plurality of first lashing holes 7 are provided on both sides of the first break 6; the second fixing member includes a beam sleeve connected to the retaining layer 4, the beam sleeve is sleeved on the outside of the cross beam 3, the beam sleeve is provided with a second break 8 parallel to the axis, and a plurality of second lashing holes 9 are provided on both sides of the second break 8; that is, the column sleeve 5 and the The beam sleeve is stably connected by socketing the column 2 and the beam 3 and passing the wire through the first binding hole and the second binding hole, so that the column sleeve 5 is stably socketed and fixed at the specified position of the column 2, and the beam sleeve is stably socketed and connected to the specified position of the beam 3, so that the entire retaining layer 4 is deployed and fixed effectively. In order to improve the connection stability of the retaining layer 4, multiple column sleeves 5 and beam sleeves are evenly spaced to ensure that the fixing points of the entire retaining layer 4 are uniform. Moreover, the column sleeves 5 and beam sleeves are also made of fiber cloth material and can be an integrated structure with the retaining layer 4.

[0031] The column 2 is provided with an air-facing side 12 and a retaining side 13, the fixing columns 11 are arranged at intervals on the retaining side 13 of the column 2, and the extension path of the tensioning member 10 is perpendicular to the retaining layer 4, so that vertical tensioning can be ensured and the best fixing effect can be ensured. In order to improve the performance of the tensioning member 10 for easy installation, the tensioning member 10 is a cable fixedly connected to the top of the column 2, and one end of the cable away from the column 2 is connected to the fixing column 11, and a positioning pull ring is provided at the top of the column 2, and the cable can be fixedly tied to the position of the positioning pull ring.

[0032] During the construction process, the first step is to excavate and cast the strip foundation 1 at the corresponding position of the column 2 and install bolts to fix it; the second step is to connect the column 2 and the beam 3 into a frame body; the third step is to fix the retaining layer 4 with the column sleeve 5 and the beam sleeve on the column 2 and the beam 3 through binding belts; the fourth step is to excavate the soil between the column 2 and the beam 3; the fifth step is to place the frame body; the sixth step is to connect the frame body with the fixed column 2 through cables to form an effective retaining system.

[0033] In summary, the utility model proposes a flexible temporary foundation pit support device, including a strip foundation 1, a retaining plate assembly is arranged on the upper end of the strip foundation 1, and a fixing assembly for fixing the retaining plate assembly is arranged on the upper end of the retaining plate assembly; the retaining plate assembly includes a plurality of columns 2 arranged at intervals on the upper end of the strip foundation 1, a cross beam 3 is detachably arranged between two adjacent columns 2, and a retaining side 13 of a plane formed by the plurality of the columns 2 and the plurality of the cross beams 3 is detachably provided with a flexible retaining layer 4; the fixing assembly includes a tensioning member 10 connected to the upper end of the column 2, and a fixing column 11 for fixing to the ground is arranged at one end of the tensioning member 10 away from the column 2. The planar foundation pit side wall retaining structure composed of strip foundation 1, columns 2, beams 3 and retaining layer 4 can ensure a stable retaining effect during a relatively simple assembly process, and the entire device can be installed and disassembled on site and can be used repeatedly, thereby reducing construction costs and improving economic benefits. In addition, the tensioning members 10 and fixed columns 11 can ensure that the entire device has good compressive resistance and supporting strength, thereby improving stability.

Claims

1. Flexible temporary foundation pit support device, characterized in that: It comprises a strip foundation (1), the upper end of the strip foundation (1) is provided with a retaining plate assembly, and the upper end of the retaining plate assembly is provided with a fixing assembly for fixing the retaining plate assembly; The retaining plate assembly comprises a plurality of columns (2) arranged at intervals on the upper end of the strip foundation (1), a plurality of cross beams (3) are detachably arranged between two adjacent columns (2), a planar retaining frame formed by the plurality of columns (2) and the plurality of cross beams (3), and the retaining frame is detachably provided with a flexible retaining layer (4); The fixing assembly comprises a tensioning member (10) connected to the upper end of the column (2); an end of the tensioning member (10) away from the column (2) is provided with a fixing column (11) for fixing to the ground.

2. The flexible temporary foundation pit supporting device according to claim 1 is characterized in that: The material of the retaining layer (4) is fiber cloth.

3. The flexible temporary foundation pit supporting device according to claim 1 is characterized in that: A first fixing member is provided between the retaining layer (4) and the upright column (2), and a second fixing member is provided between the retaining layer (4) and the crossbeam (3).

4. The flexible temporary foundation pit supporting device according to claim 3 is characterized in that: The first fixing member comprises a column sleeve (5) connected to the retaining layer (4), the column sleeve (5) being sleeved on the outside of the column (2), the column sleeve (5) being provided with a first break (6) parallel to the axis, and a plurality of first binding holes (7) being provided on both sides of the first break (6); the second fixing member comprises a beam sleeve connected to the retaining layer (4), the beam sleeve being sleeved on the outside of the cross beam (3), the beam sleeve being provided with a second break (8) parallel to the axis, and a plurality of second binding holes (9) being provided on both sides of the second break (8).

5. The flexible temporary foundation pit supporting device according to claim 1, characterized in that: A plurality of corresponding channel steels (14) are arranged on two opposite surfaces of two adjacent columns (2), the channel steels (14) are provided with screw holes, and the two ends of the crossbeam (3) are respectively fixed to the two corresponding channel steels (14) on both sides by means of a bolt structure.

6. The flexible temporary foundation pit supporting device according to claim 1, characterized in that: The tensioning member (10) is a cable fixedly connected to the top of the column (2), and one end of the cable away from the column (2) is connected to the fixed column (11).

7. The flexible temporary foundation pit supporting device according to claim 1, characterized in that: The column (2) is provided with an air-facing side (12) and a retaining side (13), the fixed column (11) is arranged at intervals on the retaining side (13) of the column (2), and the extension path of the tension member (10) is perpendicular to the retaining layer (4).

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