Anchoring structure of post-mounted ground anchor and construction method

Abstract

The invention provides an anchoring structure of a post-mounted ground anchor and a construction method, and belongs to the technical field of concrete.The anchoring structure of the post-mounted ground anchor comprises an anchoring ground, anchor bars and anchor rings, a mounting groove is formed in the anchoring ground, an anchor plate is placed in the mounting groove, a horizontal groove is formed in the upper surface of the anchor plate, and the anchor rings are vertically installed in the horizontal groove in a sliding mode; at least two inclined hole channels are evenly distributed between the upper surface and the lower surface of the anchor plate in a radial mode, and the lower ends of the inclined hole channels incline in the direction away from the anchor ring. At least two inclined drill holes are evenly distributed in the groove bottom of the mounting groove, the anchor bars penetrate through the inclined hole channels from top to bottom and then are obliquely inserted into the inclined drill holes, and grouting materials are arranged between the anchor bars and the hole walls of the inclined drill holes and between the anchor bars and the hole walls of the inclined hole channels. The ground anchor has the beneficial effects that anchoring of the ground anchor on the existing airport runway can be achieved, it can be guaranteed that the ground anchor has the high anchoring effect, and meanwhile normal operation of an airport is not affected in the non-use state.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete, and in particular relates to an anchoring structure and a construction method of a post-installed ground anchor. Background Art

[0002] With the development of social economy, the number and scale of existing airports can no longer meet the growing demand for parking, so many airports are facing the need for renovation and expansion.

[0003] At present, during the airport renovation and expansion process, the airport needs to be equipped with ground anchors to realize aircraft mooring operations. That is, when strong winds come, it is necessary to connect the ground anchor to the mooring point of the aircraft parked on the pavement through a mooring rope to prevent the aircraft from moving or tilting and other unexpected situations, thereby ensuring the stability of the aircraft.

[0004] However, the existing ground anchor structure can only be implemented in newly built airport runways with pre-buried steel bars, and is not suitable for subsequent reconstruction of existing airport runways. Figure 1 As shown, the existing ground anchor is a one-time processed component and pre-buried in the concrete layer of the airport runway. The upper section of the ground anchor is a semicircular anchor ring for inserting a steel wire rope to fix the aircraft, and the lower section is an anchoring section for being buried and fixed in the concrete layer. Moreover, since the cement concrete pavement used in the existing airport runway generally consists of a roadbed, a water-stabilizing layer (usually cement mixed with crushed stone) and a concrete layer from bottom to top, and the thickness of the high-strength concrete layer is limited (usually about 230mm), in order to ensure that all the anchor bars are anchored in the high-strength concrete layer, the anchoring section of the existing ground anchor must have a sufficiently long horizontal section in addition to the vertical section to make up for the shortfall in the vertical anchoring length. Therefore, in the subsequent reconstruction and construction of the existing airport runway, since the existing airport runway can only use the post-anchoring technology of straight-line drilling and planting of bars, it is impossible to achieve Figure 1 The ground anchor structure shown in the figure seriously restricts the airport expansion and reconstruction work.

[0005] At the same time, in order to prevent the anchor ring from protruding from the runway and causing inconvenience to the movement of the aircraft on the runway, the existing ground anchor structure generally sets the anchor ring in the anchor pit and sets a cover plate on the top of the pit to achieve the purpose of not affecting the movement of the aircraft. However, this method reduces the elevation of the anchor ring and further reduces the anchor length of the anchor bar. Summary of the invention

[0006] The technical problem solved by the present invention is to provide an anchoring structure and a construction method for a post-installed ground anchor, so that the ground anchor can be anchored at an existing airport runway and can ensure that the ground anchor has a strong anchoring effect and will not affect the normal operation of the aircraft in a non-working state.

[0007] In order to solve the above technical problems, on the one hand, the present invention provides an anchoring structure of a post-installed ground anchor, which includes an anchoring ground, anchor bars and an anchor ring. The anchoring ground is provided with an installation groove, an anchor plate is placed inside the installation groove, the upper surface of the anchor plate is flush with the anchoring ground, and a horizontal groove is provided on the upper surface of the anchor plate, an anchor ring is vertically slidably installed in the horizontal groove, and when the anchor ring moves upward, the upper end of the anchor ring can be higher than the anchoring ground, and when the anchor ring moves downward, the upper end of the anchor ring can be lower than the anchoring ground or flush with the anchoring ground; at least two anchor bar channels are evenly distributed radially between the upper and lower surfaces of the anchor plate with the anchor ring as the center, at least two inclined drilled holes are evenly distributed on the bottom of the installation groove, the inclined drilled holes are aligned one by one with the anchor bar channels, the anchor bar passes through the anchor bar channel from top to bottom and is obliquely inserted into the corresponding inclined drilled hole, and grouting material is provided between the anchor bar and the hole wall of the inclined drilled hole.

[0008] Based on this, on the one hand, the present invention can increase the anchoring length of the anchor bar by obliquely post-anchoring the anchor bar in the anchoring ground, thereby overcoming the defect in the post-anchoring technology that the anchoring length cannot be increased by pre-embedded bent steel bars because it can only drill holes in a straight line, and effectively ensure the stability of the entire anchoring structure; on the other hand, the present invention can not only ensure that the entire anchoring structure can achieve the corresponding aircraft mooring operation and will not affect the normal operation of the aircraft in a non-working state by setting an anchor plate flush with the anchoring ground and a vertically slidable anchor ring, but also reduce the depth of the installation groove through the anchor ring fixing structure, thereby further increasing the length of the anchor bar in the concrete layer at the anchoring ground, effectively strengthening the anchoring effect of the anchor bar.

[0009] Furthermore, the anchoring ground is sequentially arranged as a concrete layer, a water-stable layer, and a roadbed from top to bottom, and the lower end of the anchor bar passes through the concrete layer and extends into the water-stable layer. At this time, although the strength and density of the water-stable layer are somewhat different from those of the concrete layer, the present invention can still provide partial anchoring force for the anchor bar through the cooperation of the anchor bar and the water-stable layer after the grouting material is poured, thereby further enhancing the stability of the entire anchoring structure.

[0010] Furthermore, the anchor bar channel is an inclined channel, and the lower end of the inclined channel is inclined in a direction away from the anchor ring to ensure that the anchor bar can be installed after the anchor plate is installed.

[0011] Furthermore, the inclined channel is a stepped hole which is thick at the top and thin at the bottom. An anchor head is provided at the upper end of the anchor bar, and the bottom of the anchor head abuts against the step surface of the channel. The anchor head can be a steel bar pier head or a welded thin auxiliary steel bar, so as to fix the anchor plate through the cooperation between the anchor head and the step surface, thereby preventing the anchor plate from being pulled out of the installation groove.

[0012] Furthermore, the upper end surface of the anchor head is flush with the anchoring ground.

[0013] Furthermore, the anchor bar channel is a conical channel that is larger at the top and smaller at the bottom, and the axis of the conical channel is arranged vertically; a vertical portion that is larger at the top and smaller at the bottom is arranged at the upper end of the anchor bar, and the vertical portion is located in the conical channel; an inclined portion is arranged at the middle part of the anchor bar, and the inclined portion is located in the inclined drilled hole; a thickened portion is arranged at the lower end of the anchor bar, and the thickened portion is located in the water-stabilizing layer after passing through the inclined drilled hole, so that the bearing capacity of the ground anchor can be significantly improved by utilizing the end resistance between the thickened portion at the lower end of the anchor bar and the bottom surface of the concrete.

[0014] Furthermore, at least one vertical channel is passed through between the bottom of the horizontal groove and the bottom surface of the anchor plate, and a receiving groove is provided at the bottom of the installation groove, which is arranged opposite to and connected to all the vertical channels; a connecting portion is provided after the upper end of the anchor ring passes through the vertical channel, and the connecting portion can be located in the horizontal groove; a clamping portion is provided after the lower end of the anchor ring passes through the vertical channel, and the clamping portion can be located in the receiving groove. In this way, when the anchor ring is in a non-working state, it can slide down under the action of its own gravity, and store the clamping portion in the receiving groove, and the connecting portion is stored in the horizontal groove to avoid affecting the operation of the aircraft; on the contrary, when the anchor ring is in a working state, the operator can directly pull the anchor ring upwards and pull the connecting portion out of the horizontal groove to achieve the corresponding aircraft mooring operation, and at the same time, the anchor ring can be prevented from being separated from the anchor plate through the clamping portion.

[0015] Furthermore, two vertical channels are penetrated between the bottom of the horizontal groove and the bottom plate of the anchor plate. The anchor ring is a rectangular frame. The two vertical sections of the rectangular frame are vertically slidably installed in the two vertical channels respectively. The upper horizontal section of the rectangular frame is located in the horizontal groove as a connecting part, and the lower horizontal section of the rectangular frame is located below the anchor plate as a clamping part, and can realize the corresponding constraint function.

[0016] Furthermore, an auxiliary groove is provided on the groove wall of the horizontal groove, and the auxiliary groove can facilitate the operator to pull the anchor ring out of the horizontal groove to perform the corresponding aircraft mooring operation.

[0017] On the other hand, the present invention also provides a construction method of a post-installed ground anchor, which comprises the following steps: Step 1: Prepare anchor rings, anchor bars and anchor plates; Step 2: Drill an installation groove at a position where the ground anchor needs to be installed on the anchoring ground, and make the installation groove able to accommodate the anchor plate; Step 3: Drilling a hole obliquely at the bottom of the installation groove at the position for installing the anchor bar to form a corresponding oblique hole; at the same time, the lower end of the oblique hole passes through the concrete layer and extends into the water-stable layer; Step 4: When the anchor bar hole at the anchor plate adopts an inclined hole and the anchor bar adopts a straight structure, proceed to step 5; when the anchor bar hole at the anchor plate adopts a conical hole and the anchor bar adopts a bent structure, proceed to step 6; Step 5: first insert a grouting pipe into the inclined borehole, then use a pressure grouting machine to pour cement-based grouting material into the inclined borehole, and form an expanded grouting body in the water-stable layer; then, before the grouting liquid initially sets, first put the anchor plate into the installation groove, and align the inclined hole on the anchor plate with the inclined borehole at the bottom of the installation groove, align the vertical hole on the anchor plate with the receiving groove at the bottom of the installation groove, and then insert the anchor bar into the inclined hole and the inclined borehole, and make the bottom of the anchor bar extend into the water-stable layer; Step six, first insert the anchor bar into the inclined drilled hole, and make the anchor bar fit the side of the inclined drilled hole close to the anchor plate, and the thickened part of the anchor bar is located in the enlarged head of the channel in the water-stable layer; then pour grouting material into the gap of the inclined drilled hole to fix the anchor bar; then put the anchor plate into the installation groove, and make the vertical part of the anchor bar penetrate into the conical channel of the anchor plate, and then use the wedge-shaped clip to squeeze and fill the gap between the conical channel and the vertical part of the anchor bar.

[0018] Furthermore, in step one, the preparation process of the anchor ring includes the following steps: first, bend the workpiece used to process the anchor ring into the shape of a middle horizontal section and vertical sections at both ends; then, insert the two vertical sections of the workpiece into the two corresponding vertical holes on the anchor plate from top to bottom, and extend the lower end of the workpiece from under the anchor plate; finally, bend the lower ends of the two vertical sections 90 degrees in a direction close to each other to form horizontal sections that overlap each other, and then fix the overlapping parts together to fix the anchor ring at the anchor plate.

[0019] Furthermore, in step three, after the oblique drilling operation is completed, the concrete residue inside the inclined borehole is blown clean with compressed air, and then the anchor plate is placed.

[0020] It can be seen from the above technical solutions that the present invention has the following advantages: 1. The present invention can increase the anchoring length of the anchor bar by obliquely anchoring the anchor bar in the anchoring ground, thereby overcoming the defect of the post-anchoring technology that only straight-line drilling can be performed and the anchoring length cannot be increased by pre-embedded bent steel bars, and effectively ensuring the stability of the entire anchoring structure; 2. The present invention can ensure that the entire anchoring structure can achieve the corresponding aircraft mooring operation and will not affect the normal operation of the aircraft in a non-working state by providing an anchor plate flush with the anchoring ground and an anchor ring that can slide vertically; 3. The present invention inserts the lower end of the anchor bar into the water-stable layer. Although the strength and density of the water-stable layer are somewhat different from those of the concrete layer, the present invention can still provide partial anchoring force for the anchor bar through the cooperation between the anchor bar and the water-stable layer after the grouting material is poured, thereby further enhancing the stability of the entire anchoring structure; 4. The anchor bar in the present invention can significantly improve the anchor bearing capacity of the ground anchor at the junction of the water-stable layer and the concrete layer by using the thickened portion provided at the end of the anchor bar, and the grouting body formed by grouting in the water-stable layer, which is larger than the diameter of the inclined drilled hole in the concrete layer, and the resistance of the concrete bottom surface end; 5. The anchor ring in the present invention adopts a rectangular frame structure, so that it can not only realize the corresponding aircraft mooring operation through its own structure, but also realize the anchoring function between it and the anchor plate through its own structure, and the overall structure is simple and easy to process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 It is an anchoring structure of a pre-buried ground anchor in the prior art; Figure 2 It is a cross-sectional schematic diagram of the anchoring ground in the first embodiment of the present invention; Figure 3 It is a schematic plan view of the anchor plate in the first embodiment of the present invention; Figure 4 is a cross-sectional schematic diagram of an anchor plate in Embodiment 1 of the present invention; Figure 5 It is a schematic diagram of the structure of the anchor bar in the first embodiment of the present invention; Figure 6 This is a schematic diagram of inclined drilling and grouting in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the installation of the anchor plate in the first embodiment of the present invention; Figure 8 Schematic diagram of the installation of anchor bars in Embodiment 1 of the present invention (the anchor ring is in a pulled-out state); Fig. 9 This is a schematic diagram of the installation of anchor bars and anchor plates in the first embodiment of the present invention; Fig.10 is a cross-sectional schematic diagram of an anchor plate in Embodiment 2 of the present invention; Fig.11 It is a schematic diagram of the structure of the anchor bar in the second embodiment of the present invention; Fig.12 This is a schematic diagram of the inclined drilling process in the second embodiment of the present invention; Fig.13 This is a schematic diagram of the installation of anchor bars and anchor plates in the second embodiment of the present invention; Fig.14 It is a schematic diagram of the installation of anchor bars and anchor plates in the second embodiment of the present invention.

[0023] In the figure: 1. Concrete layer; 2. Water-stabilizing layer; 3. Installation groove; 4. Receiving groove; 5. Inclined drill hole; 6. Anchor plate; 7. Inclined channel; 8. Vertical channel; 9. Horizontal groove; 10. Auxiliary groove; 11. Anchor bar; 12. Anchor head; 13. Grouting machine; 14. Grouting pipe; 15. Grouting body in water-stabilizing layer; 16. Anchor ring; 17. Conical channel; 18. Vertical part; 19. Inclined part; 20. Thickened part; 21. Thickened channel; 22. Channel enlargement head; 23. Channel grouting body; 24. Wedge-shaped clip; 25. Vertical section of anchor bar; 26. Horizontal section of anchor bar. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1 like Figures 2 to 9 As shown, the first embodiment provides a first anchoring structure of a post-installed ground anchor, which includes an anchoring ground and anchor bars 11 and an anchor ring 16. Figure 2 As shown, the anchoring ground is sequentially arranged as a concrete layer 1, a water-stable layer 2, and a roadbed from top to bottom, and an installation groove 3 is arranged on the upper surface of the anchoring ground at a position where a ground anchor needs to be arranged, the installation groove 3 is used to place an anchor plate 6, and a receiving groove 4 for avoiding an anchor ring 16 is opened at the center position of the bottom of the installation groove 3, and at least two inclined drill holes are evenly distributed radially at the outer position of the bottom of the installation groove 3 with the receiving groove 4 as the center, the inclined drill holes are used to cooperate with the anchor bars 11, and the depth of the inclined drill holes penetrates into the water-stable layer 2 to a certain depth.

[0026] like Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, the anchor plate 6 is placed in the mounting groove 3, and the upper surface of the anchor plate 6 is flush with the anchoring ground. At the same time, a horizontal groove 9 is provided at the center of the upper surface of the anchor plate 6, and at least one vertical channel 8 is passed through between the bottom of the horizontal groove 9 and the bottom surface of the anchor plate 6, and all the vertical channels 8 are arranged opposite to and connected with the receiving groove 4 provided at the bottom of the mounting groove 3.

[0027] The anchor ring 16 is vertically slidably installed on the anchor plate 6 through the vertical hole 8, and the upper end of the anchor ring 16 is provided with a connecting portion for connecting the wire rope after passing through the vertical hole 8, and the lower end of the anchor ring 16 is provided with a clamping portion after passing through the vertical hole 8, and when the anchor ring 16 moves upward, the connecting portion at the upper end of the anchor ring 16 can be higher than the anchoring ground to perform the corresponding aircraft mooring operation; when the anchor ring 16 moves downward, the clamping portion at the lower end of the anchor ring 16 can be placed in the accommodating groove 4, and the connecting portion at the upper end of the anchor ring 16 can be lower than the anchoring ground or flush with the anchoring ground, so as to be hidden in the horizontal groove 9 to avoid affecting the normal operation of the aircraft.

[0028] Specifically, in this embodiment, two vertical channels 8 are penetrated between the bottom of the horizontal groove 9 and the bottom plate of the anchor plate 6, and the shape of the anchor ring 16 is a rectangular frame. At this time, the two vertical sections of the rectangular frame are respectively slidably installed in the two vertical channels 8, the upper horizontal section of the rectangular frame is located in the horizontal groove 9 as a connecting part, and the lower horizontal section of the rectangular frame is located below the anchor plate 6 as a clamping part, and can achieve the corresponding function. And as a preference, in this embodiment, an auxiliary groove 10 can be opened at the groove wall of the horizontal groove 9, and the depth of the auxiliary groove 10 is greater than the thickness of the upper horizontal section of the rectangular frame, so that when it is necessary to pull the anchor ring 16, the operator can use the tool inserted into the auxiliary groove 10 to pull the anchor ring 16 out of the horizontal groove 9 to perform the corresponding aircraft mooring operation.

[0029] In addition, at least two inclined channels 7 are evenly distributed radially between the upper and lower surfaces of the anchor plate 6 with the anchor ring 16 as the center. The lower ends of the inclined channels 7 are inclined in the direction away from the anchor ring 16, and each inclined channel 7 is aligned with the inclined drilled holes provided at the bottom of the installation groove 3. The anchor bar 11 passes through the inclined channel 7 from top to bottom and is obliquely inserted into the corresponding inclined drilled hole, and grouting material is provided between the anchor bar 11 and the wall of the inclined drilled hole and between the anchor bar 11 and the wall of the inclined channel 7. In this way, the first embodiment of the present invention can increase the anchoring length of the anchor bar 11 by obliquely anchoring the anchor bar 11 in the anchoring ground, thereby overcoming the defect of the post-anchoring technology that the anchoring length cannot be increased by pre-embedded bent steel bars because only straight drilling can be performed, and effectively ensuring the stability of the entire anchoring structure. Moreover, as a preference, the present embodiment 1 can set the inclined channel 7 as a stepped hole which is thick at the top and thin at the bottom, and set the anchor head 12 at the upper end of the anchor bar 11 by using a steel bar pier or welding a thin auxiliary steel bar, so that the bottom of the anchor head 12 abuts against the step surface of the channel, so as to fix the anchor plate 6 through the cooperation between the anchor head 12 and the step surface, thereby preventing the anchor plate 6 from being pulled out.

[0030] Embodiment 2 The second embodiment provides a construction method of a post-installed ground anchor, which is used to complete the anchoring structure of the post-installed ground anchor described in the first embodiment, and includes the following steps: Step 1: prepare anchor ring 16, anchor bar 11 and anchor plate 6; Step 2: Drill an installation groove 3 at the position where the ground anchor needs to be installed on the anchoring ground, and make the installation groove 3 able to accommodate the anchor plate 6; Step 3: Drill an oblique hole at the bottom of the installation groove 3 at the position for installing the anchor bar 11 to form a corresponding inclined hole 5; at the same time, the lower end of the inclined hole 5 passes through the concrete layer and extends into the water-stable layer; Step 4: first insert a grouting pipe into the inclined borehole, then use a pressure grouting machine to pour cement-based grouting material into the inclined borehole, and form an expanded grouting body in the water-stable layer, that is, Figure 6 The grouting body 15 in the water-stable layer is shown in the figure; then, before the grouting liquid initially sets, the anchor plate 6 is first placed inside the mounting groove 3, and the inclined channel 7 on the anchor plate 6 is aligned with the inclined drilled hole at the bottom of the mounting groove 3, and the vertical channel on the anchor plate 6 is aligned with the receiving groove 4 at the bottom of the mounting groove 3, and then the anchor bar 11 is inserted into the inclined channel 7 and the inclined drilled hole 5, and the bottom of the anchor bar 11 extends into the grouting body 15 in the water-stable layer.

[0031] Moreover, in step one, the preparation process of the anchor ring 16 includes the following steps: first, the workpiece used to process the anchor ring 16 is bent into the shape of a middle horizontal section and vertical sections at both ends; then, the two vertical sections of the workpiece are inserted from top to bottom into the two corresponding vertical channels 8 on the anchor plate 6, and the lower end of the workpiece is extended from under the anchor plate 6; finally, the lower ends of the two vertical sections are bent 90 degrees in a direction close to each other to form horizontal sections that overlap each other, and then the overlapping parts are fixed together to achieve the fixation of the anchor ring 16 at the anchor plate 6.

[0032] In step 3 and step 4, after the oblique drilling operation is completed, the concrete residue inside the oblique drilled hole is first blown clean with compressed air, and then the anchor plate 6 is placed.

[0033] Based on this, on the one hand, the second embodiment of the present invention can increase the anchoring length of the anchor bar 11 by obliquely anchoring the anchor bar 11 in the anchoring ground, thereby overcoming the defect in the post-anchoring technology that only straight-line drilling can be performed and the anchoring length cannot be increased by pre-embedded bent steel bars, and effectively ensure the stability of the entire anchoring structure; on the other hand, the second embodiment of the present invention can ensure that the entire anchoring structure can achieve the corresponding aircraft mooring operation and will not affect the normal operation of the aircraft when not in operation by setting an anchor plate 6 flush with the anchoring ground and a vertically slidable anchor ring 16.

[0034] Embodiment 3 like Figures 10 to 14 As shown, the third embodiment provides a second anchoring structure of a post-installed ground anchor. Compared with the first embodiment, the third embodiment is different in that the shape of the anchor bar and the shape of the anchor bar hole at the anchor plate for fixing the anchor bar in the third embodiment are changed.

[0035] Specifically, Fig.10 As shown, the anchor bar channel in the third embodiment is a conical channel 17 which is larger at the top and smaller at the bottom, and the axis of the conical channel 17 is arranged vertically; a vertical portion which is larger at the top and smaller at the bottom is arranged at the upper end of the anchor bar, and the vertical portion can be located in the conical channel; an inclined portion is arranged at the middle part of the anchor bar, and the inclined portion is located in the thickened channel located in the concrete layer part in the inclined drilled hole; a thickened portion is arranged at the lower end of the anchor bar, and the thickened portion is located in the channel enlargement head in the water-stable layer after passing through the inclined drilled hole.

[0036] In this way, when using the fixing structure of the post-installed ground anchor provided by the third embodiment, in addition to having the functions described in the first embodiment, the third embodiment can also utilize the thickened portion provided at the end of the anchor bar at the junction of the water-stable layer and the concrete layer, and the grouting body formed by grouting in the water-stable layer and having a size larger than the inclined drilled hole diameter of the concrete layer, and the resistance of the bottom surface of the concrete to significantly improve the anchor bearing capacity of the ground anchor.

[0037] Embodiment 4 The fourth embodiment provides a construction method of a post-installed ground anchor, which is used to complete the anchoring structure of the post-installed ground anchor described in the third embodiment, and includes the following steps: Step 1: prepare anchor ring 16, anchor bar 11 and anchor plate 6; Step 2: Drill an installation groove 3 at the position where the ground anchor needs to be installed on the anchoring ground, and make the installation groove 3 able to accommodate the anchor plate 6; Step 3: Drill an oblique hole at the bottom of the installation groove 3 at the position for installing the anchor bar 11 to form a corresponding inclined hole 5; at the same time, the lower end of the inclined hole 5 passes through the concrete layer and extends into the water-stable layer; Step four, first insert the anchor bar 11 into the inclined drilled hole 5, and make the anchor bar 11 fit the side of the inclined drilled hole 5 close to the anchor plate 6, and the thickened part of the anchor bar 11 is located in the enlarged head of the channel in the water-stable layer; then pour grouting material into the gap of the inclined drilled hole 5 to fix the anchor bar 11; then put the anchor plate 6 into the installation groove, and make the vertical part of the anchor bar 11 penetrate into the conical channel of the anchor plate 6, and then use a wedge-shaped clip to squeeze and fill the gap between the conical channel and the vertical part of the anchor bar 11.

[0038] Moreover, in step one, the preparation process of the anchor ring 16 includes the following steps: first, the workpiece used to process the anchor ring 16 is bent into the shape of a middle horizontal section and vertical sections at both ends; then, the two vertical sections of the workpiece are inserted from top to bottom into the two corresponding vertical channels 8 on the anchor plate 6, and the lower end of the workpiece is extended from under the anchor plate 6; finally, the lower ends of the two vertical sections are bent 90 degrees in a direction close to each other to form horizontal sections that overlap each other, and then the overlapping parts are fixed together to achieve the fixation of the anchor ring 16 at the anchor plate 6.

[0039] In step 3, during the oblique drilling operation, the hole of the oblique drilling in the concrete layer is preferably set to be a thickened hole with a diameter of at least 2 times the diameter of the anchor bar, and the hole of the oblique drilling in the water-stable layer is preferably set to be a hole enlargement head with a diameter of 4 times the diameter of the anchor bar and a length slightly larger than the thickened part of the anchor bar. In step 4, after the oblique drilling operation is completed, compressed air is used to blow away the concrete residue inside the inclined borehole, and then the anchor bar 11 is placed. During the placement of the anchor bar, if necessary, thin steel bars can be used to intersperse back and forth in the gap outside the hole to achieve anchor bar positioning.

[0040] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0041] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anchoring structure for a post-installed ground anchor, comprising an anchoring ground, anchor bars (11), and an anchor ring (16), wherein the anchoring ground is provided with an installation groove (3); characterized in that: An anchor plate (6) is placed inside the installation groove (3), the upper surface of the anchor plate (6) is flush with the anchoring ground, and a horizontal groove (9) is provided on the upper surface of the anchor plate (6), an anchor ring (16) is vertically slidably installed in the horizontal groove (9), and when the anchor ring (16) moves upward, the upper end of the anchor ring (16) can be higher than the anchoring ground, and when the anchor ring (16) moves downward, the upper end of the anchor ring (16) can be lower than the anchoring ground or flush with the anchoring ground; at least two anchor bar channels are evenly distributed radially between the upper and lower surfaces of the anchor plate (6) with the anchor ring (16) as the center, at least two inclined drilled holes (5) are evenly distributed on the bottom of the installation groove (3), the inclined drilled holes (5) are aligned one by one with the anchor bar channels, the anchor bar (11) passes through the anchor bar channel from top to bottom and is obliquely inserted into the corresponding inclined drilled hole (5), and grouting material is provided between the anchor bar (11) and the hole wall of the inclined drilled hole (5).

2. The anchoring structure of the post-installed ground anchor according to claim 1, characterized in that: The anchoring ground is sequentially arranged from top to bottom as a concrete layer (1), a water-stable layer (2), and a roadbed, and the lower end of the anchor bar (11) passes through the concrete layer (1) and extends into the water-stable layer (2).

3. The anchoring structure of the post-installed ground anchor according to claim 2, characterized in that: The anchor bar channel is an inclined channel (7), and the lower end of the inclined channel (7) is inclined in a direction away from the anchor ring (16).

4. The anchoring structure of the post-installed ground anchor according to claim 3, characterized in that: The inclined hole (7) is a stepped hole which is thick at the top and thin at the bottom. An anchor head (12) is provided at the upper end of the anchor bar (11), and the bottom of the anchor head (12) abuts against the stepped surface of the hole.

5. The anchoring structure of the post-installed ground anchor according to claim 2, characterized in that: The anchor bar channel is a conical channel (17) that is larger at the top and smaller at the bottom, and the axis of the conical channel (17) is arranged vertically; the upper end of the anchor bar (11) is provided with a vertical portion that is larger at the top and smaller at the bottom, and the vertical portion is located in the conical channel (17); the middle part of the anchor bar (11) is provided with an inclined portion, and the inclined portion is located in the inclined drilled hole (5); the lower end of the anchor bar (11) is provided with a thickened portion, and the thickened portion is located in the channel enlargement head in the water-stable layer after passing through the inclined drilled hole (5).

6. The anchoring structure of the post-installed ground anchor according to any one of claims 1 to 5, characterized in that: At least one vertical channel (8) is penetrated between the bottom of the horizontal groove (9) and the bottom surface of the anchor plate (6); a receiving groove (4) is provided at the bottom of the mounting groove (3); the receiving groove (4) is arranged opposite to and communicates with all the vertical channels (8); the upper end of the anchor ring (16) is provided with a connecting portion after penetrating the vertical channel (8), and the connecting portion can be located in the horizontal groove (9); the lower end of the anchor ring (16) is provided with a clamping portion after penetrating the vertical channel (8), and the clamping portion can be located in the receiving groove (4).

7. The anchoring structure of the post-installed ground anchor according to claim 6, characterized in that: Two vertical holes (8) are inserted between the bottom of the horizontal groove (9) and the bottom plate of the anchor plate (6). The anchor ring (16) is a rectangular frame. Two vertical sections of the rectangular frame are respectively slidably mounted vertically in the two vertical holes (8). The upper horizontal section of the rectangular frame is located in the horizontal groove (9) as a connecting portion, and the lower horizontal section of the rectangular frame is located below the anchor plate (6) as a clamping portion.

8. The anchoring structure of the post-installed ground anchor according to claim 6, characterized in that: An auxiliary groove (10) is provided on the groove wall of the horizontal groove (9).

9. A construction method for post-installed ground anchors, characterized in that: The following steps are involved: Step 1: preparing an anchor ring (16), anchor bars (11) and an anchor plate (6); Step 2: drilling an installation groove (3) at a position on the anchoring ground where the ground anchor needs to be installed, and making the installation groove (3) able to accommodate the anchor plate (6); Step three, drilling obliquely at the position at the bottom of the installation groove (3) for installing the anchor bar (11) to form a corresponding inclined drill hole; at the same time, the lower end of the inclined drill hole passes through the concrete layer and extends into the water-stable layer; Step 4: when the anchor bar hole at the anchor plate (6) is an inclined hole and the anchor bar (11) is a straight structure, proceed to step 5; when the anchor bar hole at the anchor plate (6) is a conical hole (17) and the anchor bar (11) is a bent structure, proceed to step 6; Step 5: first insert a grouting pipe into the inclined borehole (5), then use a pressure grouting machine to inject cement-based grouting material into the inclined borehole (5), and form an expanded grouting body in the water-stable layer; then, before the grouting liquid initially sets, first place the anchor plate (6) into the installation groove (3), and align the inclined hole (7) on the anchor plate (6) with the inclined borehole at the bottom of the installation groove (3), and align the vertical hole on the anchor plate (6) with the receiving groove (4) at the bottom of the installation groove (3), and then insert the anchor bar (11) into the inclined hole (7) and the inclined borehole (5), and make the bottom of the anchor bar (11) extend into the water-stable layer; Step six, first insert the anchor bar (11) into the inclined borehole (5), and make the anchor bar (11) fit the side of the inclined borehole (5) close to the anchor plate (6), and the thickened part of the anchor bar (11) is located in the hole enlargement head in the water-stable layer; then pour grouting material into the gap of the inclined borehole (5) to fix the anchor bar (11); then put the anchor plate (6) into the installation groove, and make the vertical part of the anchor bar (11) penetrate into the conical hole of the anchor plate (6), and then use a wedge-shaped clamp to squeeze and fill the gap between the conical hole and the vertical part of the anchor bar (11).

10. The construction method of post-installed ground anchor according to claim 9, characterized in that: In step one, the preparation process of the anchor ring (16) comprises the following steps: first, the workpiece used for processing the anchor ring (16) is bent into a shape of a middle horizontal section and two vertical sections at both ends; then, the two vertical sections of the workpiece are inserted from top to bottom into two corresponding vertical channels (8) on the anchor plate (6), and the lower end of the workpiece is extended from the bottom of the anchor plate (6); finally, the lower ends of the two vertical sections are bent 90 degrees in a direction close to each other to form horizontal sections that overlap each other, and then the overlapping parts are fixed together.

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