Supporting structure for grouting foundation pit excavation for high slope reinforcement

Abstract

The utility model provides a supporting structure for grouting foundation pit excavation for high slope reinforcement, which relates to the technical field of foundation pit supporting and comprises a slope foundation pit, a positioning mechanism is arranged at the slope top of the slope foundation pit, a supporting mechanism is arranged at one end of the positioning mechanism, and the supporting mechanism is used for fixing a slope. The supporting mechanism and the protection mechanism are matched with each other, so that the slope surface of the slope foundation pit can be supported and protected, the protection area of the slope surface of the slope foundation pit is extended through the protection mechanism, and the situation that the soil of the slope of the slope foundation pit is loose and soft due to excavation construction and blocks collapse is avoided; while the slope surface is prevented from collapsing, gravel and miscellaneous soil which roll down due to construction vibration can be received, and the situation that the gravel and miscellaneous soil roll down, so that construction excavation personnel in a slope foundation pit are injured, and construction operation is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a support structure for grouting foundation pit excavation for high slope reinforcement. Background Art

[0002] The edge of the loess plateau is tree-like and belongs to gully erosion landform, with loess ridges and gullies as the main features. The loess source edge has been eroded by wind and rain for a long time, and gullies have cut the edge of the plateau, forming a high plateau with deep valleys and crisscrossing gullies. There are multi-level terraced landforms such as ridges, flats and rivers of varying sizes. The edge of the city is in a jagged valley, with "U"-shaped and "V"-shaped ditches developed. The gully slope is generally 30° to 70°, and the gully wall is loess and residual slope silt. It is mainly the source erosion of loess gullies, accompanied by the intensification of soil and water loss, resulting in the fragmentation of the slope and collapse. During construction, temporary support structures need to be installed to prevent the loosening and collapse of the soil during construction from causing harm to construction workers and construction equipment. After all the excavation is completed, the temporary support needs to be removed, and piles need to be poured on the slope surface to complete the reinforcement of the foundation pit slope.

[0003] In the existing technology, as the excavation of the high slope foundation pit proceeds, the soil on the high slope surface will become loose and collapse, and it is necessary to temporarily support the slope surface of the excavated high slope foundation pit. The existing temporary support method generally supports the slope surface by installing a fixed rod and tying a wooden frame at one end of the fixed rod. However, this support structure cannot intercept the gravel falling from the slope of the excavated slope foundation pit due to excavation vibration during use. The rolling gravel and soil can easily cause harm to construction workers and affect the construction progress. Moreover, the existing support method relies on the wooden frame tying method for extension, has poor installation firmness, and cumbersome installation operation, which affects construction efficiency. For this reason, we propose a support structure for grouting foundation pit excavation for high slope reinforcement. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a supporting structure for grouting foundation pit excavation for high slope reinforcement.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a support structure for grouting foundation pit excavation for high slope reinforcement, including a slope foundation pit, a positioning mechanism is provided at the top of the slope foundation pit, a support mechanism is provided at one end of the positioning mechanism, the support mechanism is used to consolidate the slope, a limiting mechanism is provided at the bottom end of the support mechanism, the limiting mechanism is used to support and position the support mechanism, a protective mechanism is provided on one side of the support mechanism, and the protective mechanism is used to prevent stones and soil from sliding.

[0006] Preferably, the positioning mechanism includes a positioning plate fixed to the top of the slope foundation pit, a positioning anchor rod is installed on the top of the positioning plate, a threaded pressure ring is rotatably installed on the top of the positioning plate, and the threaded pressure ring is pressed on the top of the positioning anchor rod.

[0007] Preferably, the support mechanism includes a bracket rotatably connected to one end of the positioning anchor rod through a rotating shaft, a fixing groove is provided on the outer wall of the bracket, buckle grooves are provided on both sides of the outer wall of the bracket, the buckle grooves are connected to the interior of the fixing grooves, a limiting splint is snap-fitted on the outer wall of the bracket, a positioning screw is rotatably installed inside the limiting splint, and one end of the positioning screw passes through the bracket and is buckled inside the slope of the foundation pit.

[0008] Preferably, the limiting mechanism includes a base resting against the bottom end of the bracket, and a positioning cone rod is installed through the interior of the base.

[0009] Preferably, the protective mechanism includes a side guard frame that is inserted into the buckle groove, an adjusting screw is rotatably installed inside the side guard frame, the bottom end of the adjusting screw is fixedly connected to an extension plate through a rotating shaft, the extension plate is located at the bottom end of the side guard frame, and a guide rod is slidably installed between the extension plate and the side guard frame.

[0010] Preferably, the side guard frame is arranged in an inclined shape, and both ends of the side guard frame are fixedly connected with a clamping protrusion, the outer wall of the side guard frame is fixedly connected with a supporting bucket, and the side guard frame and the supporting bucket are an integrated structure.

[0011] Preferably, the buckle grooves on both sides of the bracket are arranged in a staggered shape, and the size of the buckle grooves is larger than the size of the clamping protrusions at both ends of the side guard frame.

[0012] Preferably, a collodion pad is fixedly connected to the bottom end of the bracket, and a hooking slot is provided at the top end of the positioning screw.

[0013] Beneficial effects:

[0014] 1. The utility model can support and protect the slope surface of the slope foundation pit through the cooperation of the supporting mechanism and the protective mechanism. The setting of the protective mechanism extends the protection area of the slope foundation pit, avoiding the block collapse caused by the soft soil of the slope foundation pit due to excavation construction. While preventing the slope from collapsing, it can also carry the gravel and soil rolled down due to construction vibration, avoiding the rolling of gravel and soil to cause injuries to the construction excavators in the slope foundation pit and affect the construction operation.

[0015] 2. The utility model provides a limiting mechanism at the bottom end of the support mechanism, which can cooperate with the positioning mechanism to generate a pulling force on the support mechanism, thereby enhancing the support positioning effect and installation efficiency of the support mechanism, meeting the needs of rapid installation of temporary supports, and avoiding the situation where the support mechanism is tilted and displaced due to force, thereby affecting the slope support effect. Since the size of the supporting bucket on the outer wall of the side guard frame at the bottom of the bracket is larger than the size of the supporting bucket on the outer wall of the side guard frame at the top of the bracket, when gravel and soil roll down, they will first roll into the supporting bucket on the outer wall of the top side guard frame. When the volume of the gravel is too large and it rolls too fast to pass the supporting bucket on the outer wall of the side guard frame at the top of the bracket, it will fall into the supporting bucket on the outer wall of the side guard frame at the bottom of the bracket, which can block the rolling gravel and perform segmented support to reduce the impact force of the rolling gravel.

[0016] 3. The utility model facilitates the connection of the other end of the side guard frame by means of staggered buckle grooves, thereby improving the load-bearing strength and firmness of the side guard frame, and also facilitates the splicing and combination of multiple sets of brackets and side guard frames to extend the protection distance. Moreover, the connection method is fast and convenient, which greatly improves the speed of protection extension and thus improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first perspective;

[0018] Figure 2 This is a schematic diagram of the third perspective structure of the present invention;

[0019] Figure 3 Schematic diagram of the cross-sectional structure of the positioning mechanism;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the positioning mechanism.

[0021] Legend:

[0022] 1. Slope foundation pit; 2. Positioning mechanism; 3. Support mechanism; 4. Limiting mechanism; 5. Protection mechanism; 6. Positioning plate; 7. Positioning anchor rod; 8. Threaded pressure ring; 9. Bracket; 10. Fixing groove; 11. Buckle groove; 12. Limiting splint; 13. Positioning screw; 14. Base; 15. Positioning cone rod; 16. Side guard frame; 17. Adjusting screw; 18. Extension plate; 19. Guide rod; 20. Loading bucket. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0024] The specific embodiments of the present utility model are described below with reference to the accompanying drawings.

[0025] Reference Figure 1-Figure 4 A supporting structure for grouting foundation pit excavation for reinforcing high slopes includes a slope foundation pit 1, a positioning mechanism 2 is provided on the top of the slope foundation pit 1, a supporting mechanism 3 is provided at one end of the positioning mechanism 2, and the supporting mechanism 3 is used to fix the slope; a limiting mechanism 4 is provided at the bottom of the supporting mechanism 3, and the limiting mechanism 4 is used to support and position the supporting mechanism 3; a protective mechanism 5 is provided on one side of the supporting mechanism 3, and the protective mechanism 5 is used to prevent stones and soil from sliding. The supporting mechanism 3 can be suspended by the provided positioning mechanism 2, so that the supporting mechanism 3 is attached to the outer wall of the slope of the slope foundation pit 1, and at the same time, a pulling force is provided to the supporting mechanism 3 to prevent the supporting mechanism 3 from being forced away from the slope. The slope of the foundation pit 1 can be supported by the supporting mechanism 3 at the same time to prevent the large-scale collapse of the slope. Moreover, the protective mechanism 5 set on one side of the supporting mechanism 3 can increase the protection area of the slope of the foundation pit 1 along the side slope. While preventing the slope from collapsing, it can also carry the rolling gravel and soil to avoid the rolling of gravel and soil causing injuries to the construction excavation personnel in the slope foundation pit 1 and affecting the construction operation. The limiting mechanism 4 set at the bottom end of the supporting mechanism 3 can support and position the supporting mechanism 3 to avoid the supporting mechanism 3 from tilting and displacing due to force, which affects the slope support effect.

[0026] like Figure 1-Figure 4 As shown, the positioning mechanism 2 includes a positioning plate 6 fixed to the top of the slope foundation pit 1, and a positioning anchor rod 7 is installed with a buckle on the top of the positioning plate 6. A threaded pressure ring 8 is rotatably installed on the top of the positioning plate 6, and the threaded pressure ring 8 is pressed on the top of the positioning anchor rod 7. The threaded pressure ring 8 is rotatably installed on the top of the positioning plate 6, and the positioning anchor rod 7 can be pressurized to make it fit with the top of the slope foundation pit 1, thereby improving the stability of the positioning anchor rod 7. At the same time, the setting of the positioning plate 6 can position the positioning anchor rod 7 to prevent the positioning anchor rod 7 from moving toward the slope of the slope foundation pit 1, thereby driving the support mechanism 3 to be displaced, causing a situation that affects the stability of the support mechanism 3.

[0027] like Figure 3-Figure 4As shown, the support mechanism 3 includes a bracket 9 that is connected to one end of the positioning anchor rod 7 by rotating through a rotating shaft. A fixing groove 10 is provided on the outer wall of the bracket 9. Buckle grooves 11 are provided on both sides of the outer wall of the bracket 9. The buckle grooves 11 are connected to the inside of the fixing groove 10. A limiting splint 12 is installed on the outer wall of the bracket 9 by snap-fitting. A positioning screw 13 is rotatably installed inside the limiting splint 12. One end of the positioning screw 13 passes through the bracket 9 and is buckled inside the slope of the slope foundation pit 1. The bracket 9 that is connected to one end of the positioning anchor rod 7 by rotating through a rotating shaft can be adjusted to the slope. The slope of the slope foundation pit 1 is supported against the support to prevent the slope of the slope foundation pit 1 from collapsing on a large scale. At the same time, the positioning screw 13 rotatably installed inside the limiting splint 12 can be inserted into the slope of the slope foundation pit 1 to prevent the positioning screw 13 from lateral displacement, thereby improving the firmness of the entire bracket 9. Through the setting of the limiting splint 12, the fixing groove 10 opened on the outer wall of the bracket 9 can also be blocked to avoid the situation where the structure inside the fixing groove 10 is forced to separate from the fixing groove 10 and the buckle groove 11.

[0028] like Figure 3-Figure 4 As shown, the limiting mechanism 4 includes a base 14 resting against the bottom end of the bracket 9, and a positioning cone rod 15 is installed inside the base 14. The base 14 resting against the bottom end of the bracket 9 can provide support to the bracket 9 while positioning the bracket 9, which can increase the load-bearing strength of the bracket 9 and prevent the bracket 9 from being displaced toward the outside of the slope of the slope foundation pit 1 due to the longitudinal force.

[0029] like Figure 3-Figure 4 As shown, the protection mechanism 5 includes a side guard frame 16 that is inserted into the buckle groove 11, and an adjusting screw 17 is rotatably installed inside the side guard frame 16. The bottom end of the adjusting screw 17 is fixedly connected to an extension plate 18 through a rotating shaft. The extension plate 18 is located at the bottom end of the side guard frame 16, and a guide rod 19 is slidably installed between the extension plate 18 and the side guard frame 16. By inserting and installing the side guard frame 16 inside the buckle groove 11, the support area of the entire device on the slope surface of the slope foundation pit 1 can be extended. This improves the stability of the slope of the side slope foundation pit 1 and avoids the block collapse caused by the soft soil of the side slope foundation pit 1 due to excavation construction. By adjusting the extension plate 18 fixedly connected to the bottom end of the screw 17 through the rotating shaft, the adjusting screw 17 is rotated and the guide rod 19 is used to push the extension plate 18 to move so that it fits the slope surface of the side slope foundation pit 1, reducing the gap between the bottom end of the side guard frame 16 and the slope surface of the side slope foundation pit 1, and improving the fit between the side guard frame 16 and the slope of the side slope foundation pit 1.

[0030] like Figure 1-Figure 4As shown, the side guard frame 16 is arranged in an inclined shape, and both ends of the side guard frame 16 are fixedly connected with a clamping protrusion, and the outer wall of the side guard frame 16 is fixedly connected with a supporting bucket 20. The side guard frame 16 and the supporting bucket 20 are an integrated structure. Through the clamping protrusions fixedly connected at both ends of the side guard frame 16, the side guard frame 16 can be quickly plugged and installed in the buckle groove 11 on both sides of the bracket 9, and the supporting bucket 20 fixedly connected to the outer wall of the side guard frame 16 can carry the gravel and soil sliding down the slope of the slope foundation pit 1. The side guard frame 16 arranged in an inclined shape can guide the sliding gravel and soil, and can buffer the impact force generated by the sliding gravel and soil, and prevent the gravel and soil from directly rolling down with strong impact force, thereby causing The utility model can prevent the construction workers from being injured and hitting the slope surface of the slope foundation pit 1, causing large-scale collapse of the slope of the slope foundation pit 1. The weight of the gravel and soil can also be transferred to the bracket 9 to avoid the side guard frame 16 from being bent and deformed due to excessive force. There are at least two groups of buckle grooves 11 on both sides of the outer wall of the bracket 9 in the utility model, and then the number of installed side guard frames 16 is at least two groups. The size of the supporting bucket 20 on the outer wall of the side guard frame 16 at the bottom of the bracket 9 is larger than the size of the supporting bucket 20 on the outer wall of the side guard frame 16 at the top of the bracket 9. When the gravel rolls down, the two groups of supporting buckets 20 can block the rolling gravel and carry out segmented support to reduce the impact force of the rolling gravel.

[0031] like Figure 1-Figure 4 As shown, the buckle grooves 11 on both sides of the bracket 9 are arranged in a staggered shape, and the size of the buckle grooves 11 is larger than the size of the clamping protrusions at both ends of the side guard frame 16. The buckle grooves 11 arranged in a staggered shape are convenient for clamping the other end of the side guard frame 16, thereby improving the load-bearing strength and firmness of the side guard frame 16, and also facilitating the splicing and combination of multiple groups of brackets 9 and side guard frames 16 to extend the protection distance. The buckle grooves 11, which are larger than the size of the clamping protrusions at both ends of the side guard frame 16, facilitate the quick insertion of the two ends of the side guard frame 16 into the buckle grooves 11.

[0032] like Figure 1-Figure 4 As shown, the bottom end of the bracket 9 is fixedly connected with a rubber cotton pad, and the top of the positioning screw 13 is provided with a hook and hanging slot. The bottom end of the bracket 9 is fixedly connected with the rubber cotton pad, which can fill the gap between the slope surface of the slope foundation pit 1 and the bottom end of the bracket 9, enhance the friction between the slope foundation pit 1 and the bracket 9, improve the installation stability of the bracket 9, and also protect the bracket 9 to avoid direct friction between the bracket 9 and the slope surface of the slope foundation pit 1, causing corrosion and wear, and affecting the service life. In addition, the top end of the positioning screw 13 is provided with a hook and hanging slot, which can be used to hook and fix the anti-falling stone net according to needs during the construction process.

[0033] The working principle of the present invention is as follows: during the excavation of the slope foundation pit 1, after excavating a certain distance, a positioning plate 6 is driven into the matching position of the top of the slope foundation pit 1 according to the length of the positioning anchor rod 7, and then the positioning anchor rod 7 is buckled inside the positioning plate 6, and the positioning anchor rod 7 is limited and fixed by the threaded pressure ring 8, and then the bracket 9 is turned over and placed on the outer wall of the slope foundation pit 1, and then the base 14 and the bottom end of the bracket 9 are pressed against each other to fix the bracket 9, and the block protrusion at one end of the side guard frame 16 is buckled into the buckle groove 11 and the fixing groove 10 on the outer wall of the bracket 9, and then the limiting splint 12 is fitted with the bracket 9. Snap buckle, use the positioning screw 13 that is rotatably installed inside the limiting splint 12 to insert into the slope of the slope foundation pit 1 to complete the fixation of the limiting splint 12 and the bracket 9, and finally displace the base 14 again so that it is tightly against the bottom end of the bracket 9, and insert the positioning cone rod 15 through the base 14 into the soil inside the bottom of the slope foundation pit 1 to complete the installation of the entire device. In the subsequent excavation process of the slope foundation pit 1, repeat the above operation after a certain distance, and use the staggered buckle grooves 11 to snap into the other end of the side guard frame 16. Multiple groups of brackets 9 and side guard frames 16 can be spliced and combined to extend the protection distance.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A supporting structure for grouting foundation pit excavation for high slope reinforcement, characterized by: It comprises a slope foundation pit (1), wherein a positioning mechanism (2) is provided at the top of the slope foundation pit (1), a supporting mechanism (3) is provided at one end of the positioning mechanism (2), and the supporting mechanism (3) is used for consolidating the slope; A limiting mechanism (4) is provided at the bottom end of the support mechanism (3), and the limiting mechanism (4) is used to support and position the support mechanism (3); A protection mechanism (5) is provided on one side of the support mechanism (3), and the protection mechanism (5) is used to prevent rocks and soil from sliding.

2. A supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 1, characterized in that: The positioning mechanism (2) comprises a positioning plate (6) fixed to the top of the slope foundation pit (1), a positioning anchor rod (7) being buckled and installed on the top of the positioning plate (6), a threaded pressure ring (8) being rotatably installed on the top of the positioning plate (6), and the threaded pressure ring (8) being buckled on the top of the positioning anchor rod (7).

3. A supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 2, characterized in that: The support mechanism (3) includes a bracket (9) rotatably connected to one end of a positioning anchor rod (7) via a rotating shaft, a fixing groove (10) is provided on the outer wall of the bracket (9), buckle grooves (11) are provided on both sides of the outer wall of the bracket (9), the buckle grooves (11) are interconnected with the interior of the fixing groove (10), a limiting clamp (12) is buckled and installed on the outer wall of the bracket (9), a positioning screw (13) is rotatably installed inside the limiting clamp (12), and one end of the positioning screw (13) passes through the bracket (9) and is buckled inside the slope of the slope foundation pit (1).

4. A supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 3, characterized in that: The limiting mechanism (4) comprises a base (14) resting against the bottom end of the bracket (9), and a positioning cone rod (15) is installed through the interior of the base (14).

5. The supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 3, characterized in that: The protection mechanism (5) includes a side guard frame (16) inserted into the buckle groove (11), an adjusting screw (17) is rotatably installed inside the side guard frame (16), and the bottom end of the adjusting screw (17) is fixedly connected to an extension plate (18) through a rotating shaft. The extension plate (18) is located at the bottom end of the side guard frame (16), and a guide rod (19) is slidably installed between the extension plate (18) and the side guard frame (16).

6. A supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 5, characterized in that: The side guard frame (16) is arranged in an inclined shape, and both ends of the side guard frame (16) are fixedly connected with a clamping protrusion, and the outer wall of the side guard frame (16) is fixedly connected with a supporting bucket (20), and the side guard frame (16) and the supporting bucket (20) are an integrated structure.

7. A supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 6, characterized in that: The buckle slots (11) on both sides of the bracket (9) are arranged in a staggered manner, and the size of the buckle slots (11) is larger than the size of the clamping protrusions at both ends of the side guard frame (16).

8. The supporting structure for grouting foundation pit excavation for high slope reinforcement according to claim 3, characterized in that: The bottom end of the bracket (9) is fixedly connected to a rubber pad, and the top end of the positioning screw (13) is provided with a hooking slot.

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