Anchoring bar for foundation pit support

Abstract

The application relates to the technical field of building construction, in particular to an anchor rod for foundation pit support, which comprises an anchor rod body, the outer wall of the anchor rod body comprises a threaded section and a smooth section, a lead-in conical plate is fixed at one end of the anchor rod body, a reserved port is arranged on the surface of the smooth section of the anchor rod body, a handle is movably inserted into the reserved port, and a pipe is inserted into the anchor rod body; the anchor rod for foundation pit support has the beneficial effects that after the anchor rod body is led into the installation hole of the foundation pit, the pipe is inserted into the anchor rod body, the multiple groups of handles supported by the pipe are inserted into the soil layer of the installation hole, and after the pipe and the anchor rod body are connected through limiting hangers, the pipe is prevented from being separated from the anchor rod body; at this time, the anchor rod body is firmly clamped in the installation hole, the pipe is used to pour filling materials into the anchor rod body, and the filling materials seep between the anchor rod body and the installation hole to fill the joints.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to an anchor rod used for foundation pit support. Background Technology

[0002] A foundation pit is a pit excavated at the foundation design location according to the foundation elevation and foundation plane dimensions. The retaining structures, groundwater control, and environmental protection measures required to ensure the safety and stability of the underground space formed by the excavation from the ground during the construction of the underground structure are called foundation pit engineering.

[0003] In existing technologies, anchor bolts are used for reinforcement during foundation pit construction. Anchor bolts are a fundamental component of roadway support in modern coal mines, reinforcing the surrounding rock and allowing it to support itself. Anchor bolts are not only used in mines but also in engineering projects for the main reinforcement of slopes, tunnels, and dams. As a tension member extending deep into the ground, an anchor bolt is connected to the engineering structure at one end and extends into the ground at the other. The entire anchor bolt is divided into a free section and an anchored section. The free section is the area that transmits the tension at the anchor head to the anchor body; its function is to apply prestress to the anchor bolt.

[0004] However, the anchor rod is only fitted with a top support block at the end. After the anchor rod is inserted into the installation hole of the foundation pit, the top support block is used to push the anchor rod back and lock it in the installation hole to prevent the anchor rod from retreating. However, the limiting effect of a set of top support blocks is not good. Furthermore, because the anchor rod is pulled out of the installation hole by one end, the gap between the anchor rod and the inside of the installation hole becomes larger. Summary of the Invention

[0005] The purpose of this invention is to provide an anchor bolt for foundation pit support, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an anchor bolt for foundation pit support, comprising an anchor bolt body, the outer wall of which includes a threaded section and a smooth section, an inlet cone plate fixed at one end of the anchor bolt body, a pre-reserved opening on the surface of the smooth section of the anchor bolt body, a movably inserted shank inside the pre-reserved opening, an insert tube inserted inside the anchor bolt body, a limiting hanger provided between one end of the insert tube and the anchor bolt body, a washer plate sleeved on the threaded section of the anchor bolt body, a grout stopper fixed on the surface of the washer plate, the grout stopper sleeved on the threaded section of the anchor bolt body, and a nut sleeved and screwed onto the threaded section of the anchor bolt body.

[0007] Preferably, the other end of the anchor rod body is provided with a reserved groove, the insertion tube is movably inserted into the reserved groove, the surface of the reserved groove is fixed with a screw handle, the inner ring surface of the insertion tube is provided with an internal thread, after the insertion tube is inserted into the reserved groove, the insertion tube is sleeved and screwed onto the screw handle, and the surface of the insertion tube is provided with a through hole.

[0008] Preferably, the guide cone plate has a right-angled trapezoidal plate structure, and there are multiple guide cone plates. The multiple guide cone plates are arranged radially around one end center of the anchor rod body. A connecting piece is fixed between two adjacent guide cone plates, and a material clamping groove is opened on the surface of the guide cone plate.

[0009] Preferably, the smooth section of the anchor bolt body has a reserved opening. There are two sets of reserved openings, which are symmetrically distributed about the anchor bolt body. Each set has multiple reserved openings, which are arranged along the long side of the smooth section of the anchor bolt body. The insertion handle corresponds to the reserved opening one by one, and the insertion handle is movably inserted into the reserved opening. The insertion handle is in the shape of an arc block.

[0010] Preferably, the two parallel sidewalls of the reserved opening are provided with side grooves, and a traction piece is slidably connected inside the side groove. The traction piece is fixed to the surface of the insertion handle. A rubber clamp is fixed between the traction piece and the side groove. A pressure relief port is provided on the surface of the rubber clamp. A slot 1 is provided at one end of the insertion handle. The slot 1 is a cross-shaped groove. A perforation is provided on the surface of the slot 1. Two inclined surfaces are symmetrically provided at the other end of the insertion handle.

[0011] Preferably, the limiting device includes an elastic hanging piece, a retaining strip, a second retaining groove, a limiting ring, and a pull ring. The elastic hanging piece has an "L"-shaped plate structure. A retaining strip is fixed to the surface of the elastic hanging piece. The retaining strip is an arc strip with a right-angled trapezoidal cross-section. The retaining strip is inserted into the second retaining groove, which is an annular groove. The second retaining groove is opened on the outer ring surface of the limiting ring. The limiting ring is fixed to the other end of the anchor rod body, and the inner ring diameter of the limiting ring is larger than the diameter of the reserved groove. The pull ring is fixed to the surface of the elastic hanging piece.

[0012] Preferably, the surface of the pad is provided with an embedding groove, which is an annular groove. The surface of the pad is provided with an extension groove, which connects to the embedding groove. There are multiple extension grooves, which are distributed in a cross shape around the embedding groove. A rubber pad is fixed to the surface of the embedding groove. The rubber pad is an annular plate structure. Multiple extension rubber pieces are fixed to the outer ring surface of the rubber pad. The extension rubber pieces correspond one-to-one with the extension grooves, and the extension rubber pieces are fixed in the extension grooves.

[0013] Preferably, the grout stop plug is a truncated tube, and one end of the grout stop plug has an installation groove. The installation groove is an annular groove, and a sealing ring is fixed inside the installation groove. The sealing ring protrudes from the installation groove and is clamped between the installation groove and the threaded section of the anchor rod body.

[0014] Preferably, the outer ring surface of the anchor bolt body is provided with an arc groove. There are two sets of arc grooves, which are symmetrically distributed about the anchor bolt body. Each set of arc grooves has multiple arc grooves, which are arranged along the smooth section of the anchor bolt body.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention proposes an anchor rod for foundation pit support. After the anchor rod body is inserted into the installation hole of the foundation pit, a plug is inserted into the anchor rod body. The plug supports multiple sets of plug handles inserted into the soil layer of the installation hole. After the plug and the anchor rod body are connected by a limiting hanger, the plug is prevented from detaching from the anchor rod body. At this time, the anchor rod body is firmly stuck in the installation hole. Filling material is poured into the anchor rod body through the plug, and the filling material seeps into the gap between the anchor rod body and the installation hole to fill the gap. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

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

[0019] Figure 3 This is a half-sectional schematic diagram of the structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the connection structure between the grout stopper and the gasket of the present invention;

[0021] Figure 5 This is a schematic diagram of the pad structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the insert handle structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the card slot structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the cone-plate structure introduced in this invention;

[0025] Figure 9 This is a schematic diagram of the anchor body structure of the present invention;

[0026] Figure 10 This is a schematic diagram of the cannulation structure of the present invention.

[0027] In the diagram: 1. Anchor bolt body; 2. Reserved groove; 3. Guide cone plate; 4. Connecting piece; 5. Material clamping groove; 6. Reserved opening; 7. Side groove; 8. Insert handle; 9. Traction piece; 10. Rubber clamp block; 11. First groove; 12. Through hole; 13. Inclined surface; 14. Insert tube; 15. Threaded handle; 16. Elastic hanging piece; 17. Clamping strip; 18. Second groove; 19. Limiting ring; 20. Pull ring; 21. Pad; 22. Embedded groove; 23. Rubber gasket; 24. Grout stop plug; 25. Installation groove; 26. Sealing ring; 27. Through hole; 28. Arc groove; 29. ​​Paddle; 30. Nut. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1

[0030] Please see Figures 1 to 3 This invention provides a technical solution: an anchor bolt for foundation pit support, comprising an anchor bolt body 1. The outer wall of the anchor bolt body 1 includes a threaded section and a smooth section. One end of the anchor bolt body 1 is fixed with an inlet cone plate 3. A pre-reserved opening 6 is provided on the surface of the smooth section of the anchor bolt body 1. An insert 8 is movably inserted into the pre-reserved opening 6. An insert tube 14 is inserted into the inside of the anchor bolt body 1. A limiting hanger is provided between one end of the insert tube 14 and the anchor bolt body 1. A pad 21 is fitted on the threaded section of the anchor bolt body 1. A grout stop plug 24 is fixed on the surface of the pad 21. The grout stop plug 24 is fitted onto the threaded section of the anchor bolt body 1. On the threaded section of the anchor body 1, a nut 30 is fitted and screwed onto the threaded section of the anchor body 1; after the anchor body 1 is inserted into the installation hole of the foundation pit, the insertion tube 14 is inserted into the anchor body 1, the insertion tube 14 supports multiple sets of insertion handles 8 inserted into the soil layer of the installation hole, and after the insertion tube 14 and the anchor body 1 are connected by a limiting hanger, the insertion tube 14 is prevented from detaching from the anchor body 1. At this time, the anchor body 1 is firmly stuck in the installation hole, and filling material is poured into the interior of the anchor body 1 through the insertion tube 14. The filling material seeps into the gap between the anchor body 1 and the installation hole to fill the gap.

[0031] Example 2

[0032] See attached document Figure 8 and Figure 9 Based on Embodiment 1, in order to achieve the material-locking function after the anchor bolt body 1 is introduced into the foundation pit installation hole, the guide cone plate 3 is a right-angled trapezoidal plate structure. There are multiple guide cone plates 3, which are arranged radially around one end center of the anchor bolt body 1. A connecting piece 4 is fixed between two adjacent guide cone plates 3, and a material-locking groove 5 is opened on the surface of the guide cone plate 3. An arc groove 28 is opened on the outer ring surface of the anchor bolt body 1. There are two sets of arc grooves 28, which are symmetrically distributed about the anchor bolt body 1. There are multiple arc grooves 28 in each set, and the multiple arc grooves 28 are arranged along the smooth section of the anchor bolt body 1.

[0033] Example 3

[0034] See attached document Figure 6 and Figure 7Based on Embodiment 2, in order to limit the anchor body 1 of the anchor rod body 1 that is inserted into the foundation pit installation hole, a reserved groove 2 is provided at the other end of the anchor body 1. The insertion tube 14 is movably inserted into the reserved groove 2. A screw shank 15 is fixed on the surface of the reserved groove 2. The inner ring surface of the insertion tube 14 is provided with an internal thread. After the insertion tube 14 is inserted into the reserved groove 2, the insertion tube 14 is sleeved and screwed onto the screw shank 15. A through hole 27 is provided on the surface of the insertion tube 14. A reserved opening 6 is provided on the smooth section of the anchor body 1. There are two sets of reserved openings 6. The two sets of reserved openings 6 are symmetrically distributed about the anchor body 1. Each set of reserved openings 6 has multiple reserved openings. The multiple reserved openings 6 are arranged along the long side of the smooth section of the anchor body 1. The insertion shank 8 corresponds one-to-one with the reserved opening 6. The insertion shank 8 is movably inserted into the reserved opening 6. The insertion shank 8 is an arc-shaped block. Side grooves 7 are provided on the two parallel side walls of the reserved opening 6. A traction piece 9 is slidably connected inside the side groove 7. The pull plate 9 is fixed to the surface of the insertion handle 8. A rubber clamp 10 is fixed between the pull plate 9 and the side groove 7. The surface of the rubber clamp 10 is provided with a pressure relief port. One end of the insertion handle 8 is provided with a slot 11, which is a cross-shaped groove. The surface of the slot 11 is provided with a through hole 12. The other end of the insertion handle 8 is provided with two symmetrical bevels 13. The limiting device includes an elastic hanging plate 16, a locking strip 17, a second locking groove 18, a limiting ring 19, and a pull ring 20. The elastic hanging piece 16 has an "L"-shaped plate structure. A retaining strip 17 is fixed on the surface of the elastic hanging piece 16. The retaining strip 17 is an arc strip with a right-angled trapezoidal cross section. The retaining strip 17 is inserted into the retaining groove 18. The retaining groove 18 is an annular groove. The retaining groove 18 is opened on the outer ring surface of the limiting ring 19. The limiting ring 19 is fixed to the other end of the anchor rod body 1. The inner ring diameter of the limiting ring 19 is larger than the diameter of the reserved groove 2. The pull ring 20 is fixed on the surface of the elastic hanging piece 16.

[0035] Example 4

[0036] See attached document Figure 4 and Figure 5 Based on Embodiment 3, in order to seal the foundation pit hole for installing the anchor bolt body 1, the surface of the pad 21 is provided with an embedding groove 22, which is an annular groove. The surface of the pad 21 is provided with an extension groove, which connects to the embedding groove 22. There are multiple extension grooves, which are distributed in a "+" shape around the embedding groove 22. A rubber gasket 23 is fixed on the surface of the embedding groove 22. The rubber gasket 23 is an annular plate structure. Multiple extension rubber pieces are fixed on the outer ring surface of the rubber gasket 23. The extension rubber pieces correspond one-to-one with the extension grooves and are fixed in the extension grooves. The grout stop plug 24 is a trapezoidal tube. One end of the grout stop plug 24 is provided with an installation groove 25, which is an annular groove. A sealing ring 26 is fixed inside the installation groove 25. The sealing ring 26 protrudes from the installation groove 25 and is clamped between the installation groove 25 and the threaded section of the anchor bolt body 1.

[0037] In actual use, installation holes are pre-drilled on the surface of the foundation pit. The anchor rod body 1 is first inserted into the installation hole, and the guide cone plate 3 is inserted into the end of the installation hole by pushing the anchor rod body 1. Soil is present on both sides of the connecting piece 4, forming a pre-embedded anti-detachment structure at the connecting piece 4. Soil is also filled into the surface of the clamping groove 5 and the arc groove 28, forming a clamping structure to prevent the anchor rod body 1 from retracting. At this time, the insertion handle 8 is inside the reserved opening 6. The insertion tube 14 is inserted into the reserved groove 2. After the insertion tube 14 is pushed to one end of the reserved groove 2, the insertion tube 14 is screwed onto the screw handle 15. During this process, the inclined surface of the clamping strip 17 is supported by the limiting ring 19, and the elastic hanging piece 16 deforms. As the insertion tube 14 is pushed forward, when the clamping strip 17 is opposite to the second clamping groove 18, the elastic hanging piece 16 rebounds and drives the clamping strip 17 into the second clamping groove 18. At this time, the insertion tube 14 will not be withdrawn from the anchor rod body 1, that is, the insertion tube 14 and the screw handle 15 are locked together. The screw connection of the handle 15 will not loosen, and during the process of inserting the tube 14 into the reserved slot 2, the tube 14 presses the handle 8 along the inclined surface 13, and the handle 8 moves to the outside of the reserved opening 6. The handle 8 drives the traction plate 9 to compress the rubber clamp 10 and deform it. One end of the handle 8 is inserted into the surface of the installation hole. The tube 14 prevents the handle 8 from retracting, so that the anchor body 1 is firmly installed in the installation hole. The grout stop plug 24 and the pad 21 are put on the anchor body 1. The nut 30 is tightened to push the pad 21 to move towards the foundation pit until the grout stop plug 24 is inserted into the installation hole, so as to achieve a firm installation of the anchor body 1. Filling material is injected into the anchor body 1 through the tube 14. The filling material flows into the anchor body 1 through the through hole 27, and the filling material seeps into the space between the anchor body 1 and the installation hole through the through hole 12. After the filling material solidifies, the firmness of the anchor body 1 in the installation hole is reinforced.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anchor bolt for foundation pit support, comprising an anchor bolt body (1), characterized in that: The outer wall of the anchor body (1) includes a threaded section and a smooth section. One end of the anchor body (1) is fixed with an inlet cone plate (3). A reserved opening (6) is opened on the surface of the smooth section of the anchor body (1). A plug handle (8) is movably inserted into the reserved opening (6). A plug tube (14) is inserted into the inside of the anchor body (1). A limiting hanger is provided between one end of the plug tube (14) and the anchor body (1). A pad plate (21) is fitted on the threaded section of the anchor body (1). A grout stop plug (24) is fixed on the surface of the pad plate (21). The grout stop plug (24) is fitted on the threaded section of the anchor body (1). A nut (30) is fitted and screwed onto the threaded section of the anchor body (1). The smooth section of the anchor body (1) is provided with a reserved opening (6). There are two sets of reserved openings (6), which are symmetrically distributed about the anchor body (1). Each set of reserved openings (6) has multiple openings. The multiple reserved openings (6) are arranged along the long side of the smooth section of the anchor body (1). The insertion handle (8) corresponds to the reserved opening (6) one by one. The insertion handle (8) is movably inserted into the reserved opening (6). The insertion handle (8) is an arc-shaped block. The two parallel side walls of the reserved opening (6) are provided with openings. There is a side groove (7), and a traction piece (9) is slidably connected inside the side groove (7). The traction piece (9) is fixed on the surface of the plug handle (8). A rubber clamp (10) is fixed between the traction piece (9) and the side groove (7). A pressure relief port is opened on the surface of the rubber clamp (10). A slot 1 (11) is opened at one end of the plug handle (8). The slot 1 (11) is a cross-shaped groove. A perforation (12) is opened on the surface of the slot 1 (11). Two inclined surfaces (13) are symmetrically opened at the other end of the plug handle (8).

2. The anchor bolt for foundation pit support according to claim 1, characterized in that: The other end of the anchor body (1) is provided with a reserved groove (2), and the insertion tube (14) is movably inserted into the reserved groove (2). The surface of the reserved groove (2) is fixed with a screw handle (15). The inner ring surface of the insertion tube (14) is provided with an internal thread. After the insertion tube (14) is inserted into the reserved groove (2), the insertion tube (14) is sleeved and screwed onto the screw handle (15), and the surface of the insertion tube (14) is provided with a through hole (27).

3. The anchor bolt for foundation pit support according to claim 1, characterized in that: The guide cone plate (3) has a right-angled trapezoidal plate structure. Multiple guide cone plates (3) are provided. Multiple guide cone plates (3) are arranged radially around one end center of the anchor rod body (1). A connecting piece (4) is fixed between two adjacent guide cone plates (3), and a material clamping groove (5) is opened on the surface of the guide cone plate (3).

4. An anchor bolt for foundation pit support according to claim 2, characterized in that: The limiting device includes an elastic hanging piece (16), a locking strip (17), a second locking groove (18), a limiting ring (19), and a pull ring (20). The elastic hanging piece (16) has an "L"-shaped plate structure. The locking strip (17) is fixed on the surface of the elastic hanging piece (16). The locking strip (17) is an arc strip with a right-angled trapezoidal cross section. The locking strip (17) is inserted into the second locking groove (18). The second locking groove (18) is an annular groove. The second locking groove (18) is opened on the outer ring surface of the limiting ring (19). The limiting ring (19) is fixed to the other end of the anchor rod body (1), and the inner ring diameter of the limiting ring (19) is larger than the diameter of the reserved groove (2). The pull ring (20) is fixed on the surface of the elastic hanging piece (16).

5. An anchor bolt for foundation pit support according to claim 1, characterized in that: The surface of the pad (21) is provided with an embedding groove (22), which is an annular groove. The surface of the pad (21) is provided with an extension groove, which is connected to the embedding groove (22). There are multiple extension grooves, which are distributed in a cross shape around the embedding groove (22). A rubber pad (23) is fixed on the surface of the embedding groove (22). The rubber pad (23) is an annular plate structure. Multiple extension rubber pieces are fixed on the outer ring surface of the rubber pad (23). The extension rubber pieces and the extension grooves correspond one-to-one, and the extension rubber pieces are fixed in the extension grooves.

6. An anchor bolt for foundation pit support according to claim 1, characterized in that: The grout stop plug (24) is a truncated tube. One end of the grout stop plug (24) is provided with an installation groove (25). The installation groove (25) is an annular groove. A sealing ring (26) is fixed inside the installation groove (25). The sealing ring (26) protrudes from the installation groove (25) and is clamped between the installation groove (25) and the threaded section of the anchor rod body (1).

7. An anchor bolt for foundation pit support according to claim 1, characterized in that: The outer ring surface of the anchor body (1) is provided with an arc groove (28). There are two sets of arc grooves (28). The two sets of arc grooves (28) are symmetrically distributed about the anchor body (1). Each set of arc grooves (28) has multiple arc grooves. The multiple arc grooves (28) are arranged along the smooth section of the anchor body (1).

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