Sleeve type rock anchor rod foundation structure and method

Abstract

The invention discloses a sleeve type rock anchor rod foundation structure and method, and relates to the technical field of rock anchor rod foundations, the sleeve type rock anchor rod foundation structure comprises a foundation platform and a plurality of foundation piles arranged below the foundation platform, and further comprises a plurality of outer sleeves and a plurality of inner sleeves, a plurality of first insertion holes are formed in the periphery of the edge of the surface of the foundation platform at equal intervals, and a plurality of second insertion holes are formed in the periphery of the surface of the foundation platform; by means of threaded connection of the multiple anchor rod bodies and the threaded cylinder and multiple arrangement of the outer sleeve and the inner sleeve, loads are effectively dispersed, the supporting capacity of the foundation to an upper structure is enhanced, and the foundation has the advantages of being simple in structure, convenient to use and high in practicability. The anchor rod can adapt to more complex geological conditions and larger load requirements, all the components are in detachable threaded connection, for example, the anchor rod body is in threaded connection with the threaded barrel, and the outer sleeve and the inner sleeve are installed in an inserted mode, so that the construction process is simpler, more convenient and faster, and meanwhile the construction efficiency is improved. By means of the design, later inspection, maintenance and component replacement are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of rock bolt foundation, and in particular to a casing type rock bolt foundation structure and method. Background Art

[0002] At present, the fixing of frames and towers of large or super-large equipment, including wind turbines, wind power generation lines, street lighting and signal devices, mostly adopts concrete support foundations constructed on site.

[0003] The current rock anchor foundation structure has been found to have at least the following technical problems: the common rock anchor foundation does not perform well in terms of bearing capacity and it is difficult to effectively disperse the load, which causes the foundation structure to be easily deformed or even damaged under greater pressure; in terms of installation and maintenance, the traditional structure is complex in design, the connection of components is not convenient enough, and the construction process is cumbersome, which increases the difficulty and time cost of construction and is not conducive to subsequent inspection, maintenance and component replacement; in addition, the durability of traditional structures needs to be improved and they are easily affected by corrosion and wear, which shortens the service life of the foundation structure; in terms of seismic performance, some foundation structures have insufficient absorption and buffering capacity for seismic energy and are prone to severe damage when an earthquake occurs. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a casing type rock bolt foundation structure and method to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: According to a first aspect of the present invention, a casing-type rock anchor foundation structure is provided, comprising a foundation pedestal and a plurality of foundation piles arranged below the foundation pedestal, and further comprising: a plurality of outer casings and a plurality of inner casings, a plurality of first insertion holes are equidistantly opened on the circumference of the edge of the surface of the foundation pedestal, a second insertion hole communicating with the first insertion hole is opened on the surface of each of the foundation piles, each of the outer casings is inserted from the first insertion hole into the second insertion hole, each of the inner casings is arranged in the outer casing, an anchor body is penetrated in each of the inner casings, a threaded barrel is arranged on the inner wall bottom surface of each of the second insertion holes, threads are arranged on the upper and lower ends of each of the anchor bodies, the lower end of each of the anchor bodies is threadedly connected to the threaded barrel, and an anchor nut is threadedly sleeved on the upper end of each of the anchor bodies.

[0006] Preferably, the bottom end of each outer sleeve is respectively fitted with the upper end of the threaded tube, and the upper end of each outer sleeve is sleeved with a positioning flange.

[0007] Preferably, a plurality of circular grooves are equidistantly provided at the edge of the surface of the base support, each of the circular grooves is concentrically designed with each of the first insertion holes, and each of the positioning flanges is arranged in the circular groove.

[0008] Preferably, the inner wall of each outer sleeve is fixedly provided with a plurality of guide strips at equal intervals around the circumference, the outer surface of each inner sleeve is provided with a plurality of guide grooves at equal intervals around the circumference, and each guide strip is movably inserted into a guide groove.

[0009] Preferably, the inner wall of the outer sleeve is provided with an anti-corrosion coating, and the inner sleeve is made of high-strength plastic.

[0010] Preferably: there is a gap between each foundation pile and the bottom of the foundation pedestal, a rubber pad is provided in the gap, a plurality of circular holes are equidistantly formed on the edge of the surface of the rubber pad, and each outer sleeve movably passes through the circular hole.

[0011] Preferably: a plurality of connecting screws are equidistantly arranged on the central circumference of the foundation platform, a plurality of connecting rings are pre-buried inside the foundation platform, each of the connecting screws passes through the connecting ring, and a plurality of reinforcing rods are equidistantly arranged on the outer end of each connecting ring.

[0012] In a second aspect, the present invention provides a method for constructing the above-mentioned casing type rock bolt foundation structure, comprising the steps of: A plurality of first insertion holes are provided at equal intervals around the edge of the surface of the foundation platform; A second insertion hole communicating with the first insertion hole is provided on the surface of the foundation pile; Insert the outer sleeve from the first insertion hole into the second insertion hole, so that the bottom end of the outer sleeve fits with the upper end of the threaded tube on the bottom surface of the inner wall of the second insertion hole; The inner sleeve is installed in the outer sleeve, and the guide strip on the inner wall of the outer sleeve cooperates with the guide groove on the outer surface of the inner sleeve to ensure the accuracy and stability of the installation of the inner sleeve; The anchor rod body is passed through the inner casing, the lower end of the anchor rod body is threadedly connected with the threaded barrel, the anchor rod body is firmly fixed in the threaded barrel by rotating it, and the upper end of the anchor rod body is threadedly sleeved with an anchor rod nut to further strengthen the fixation; A rubber pad is arranged at the bottom gap between the foundation pile and the foundation cap, and the positioning flange at the upper end of the outer sleeve is placed in the circular groove on the surface of the foundation cap; The connecting screws arranged equidistantly on the central circumference of the foundation cap penetrate the pre-buried connecting ring, and the reinforcing rods at the outer ends of the connecting ring enhance the overall stability of the foundation structure; The design of the guide strip and the guide groove ensures the accuracy of the installation of the inner sleeve, and the cooperation of the positioning flange and the circular groove ensures the position accuracy of the outer sleeve.

[0013] Compared with the prior art, the beneficial effects of this solution are as follows: The guide strip on the inner wall of the outer sleeve cooperates with the guide groove on the outer surface of the inner sleeve to ensure the accuracy and stability of the installation of the inner sleeve. Then the anchor body is passed through the inner sleeve, and the lower end of the anchor body is threadedly connected to the threaded barrel. The anchor body is rotated to make it firmly fixed in the threaded barrel. The upper end of the anchor body is threadedly sleeved with an anchor nut to further strengthen the fixation. Through the threaded connection of multiple anchor bodies and the threaded barrel, and the multiple settings of the outer sleeve and the inner sleeve, the load is effectively dispersed, the supporting capacity of the foundation to the superstructure is enhanced, and it can adapt to more complex geological conditions and greater load requirements. The components are connected by detachable threaded connections, such as the threaded connection between the anchor body and the threaded barrel, and the insert-type installation method of the outer sleeve and the inner sleeve, which makes the construction process simpler and faster. At the same time, this design is also convenient for inspection, maintenance and replacement of parts in the later stage.

[0014] The anti-corrosion coating on the inner wall of the outer casing can effectively prevent corrosion, and the inner casing is made of high-strength plastic, which can resist wear and chemical attack, extending the service life of the foundation structure and reducing maintenance costs.

[0015] The use of detachable threaded connections between the components, such as the threaded connection between the anchor body and the threaded barrel, and the insertion installation method of the outer sleeve and the inner sleeve, makes the construction process simpler and faster. At the same time, this design also facilitates inspection, maintenance and replacement of components in the later stage.

[0016] The design of the guide strip and guide groove ensures the accuracy of the installation of the inner sleeve, and the cooperation of the positioning flange and the circular groove ensures the position accuracy of the outer sleeve, thereby reducing errors in construction and improving the quality of the foundation structure.

[0017] The setting of rubber pads can absorb and buffer earthquake energy, reduce earthquake damage to the foundation structure, improve the overall seismic performance, and enhance the safety of buildings during earthquakes.

[0018] The connecting screws equidistantly arranged on the central circumference of the foundation pedestal penetrate the pre-buried connecting ring. The reinforcement rods at the outer ends of the connecting rings enhance the overall stability of the foundation structure. The connecting screws are connected and fixed to the flanges of the equipment, so that the entire foundation structure can stably support the upper equipment or buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1A structural diagram of an overall casing type rock bolt foundation structure in an embodiment of the present invention; Figure 2 A structural diagram of a circular groove in an embodiment of the present invention; Figure 3 A structural diagram of a connecting ring in an embodiment of the present invention; Figure 4 It is a structural diagram of a cutaway foundation pile in an embodiment of the present invention; Figure 5 A structural diagram of an outer sleeve in an embodiment of the present invention; Figure 6 A structural diagram of a guide bar in an embodiment of the present invention; Figure 7 This is a structural diagram of an inner sleeve in an embodiment of the present invention; Figure 8 It is a structural diagram of a rubber pad in an embodiment of the present invention; Fig. 9 It is a structural diagram of a reinforcement rod in an embodiment of the present invention; Fig.10 It is a structural diagram of the anchor rod body in an embodiment of the present invention; Fig.11 It is a structural diagram of a threaded barrel in an embodiment of the present invention; Fig.12 2 is a structural diagram of a connecting screw in an embodiment of the present invention.

[0021] Legend: 1. Foundation pedestal; 11. First insertion hole; 12. Circular groove; 2. Foundation pile; 21. Threaded barrel; 22. Second insertion hole; 3. Outer sleeve; 31. Inner sleeve; 32. Anchor body; 33. Positioning flange; 34. Anchor nut; 35. Guide groove; 36. Guide strip; 4. Connecting ring; 41. Connecting screw; 42. Reinforcement rod; 5. Rubber pad; 51. Round hole. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1 like Figure 1 to Figure 12 As shown, the present invention provides a casing type rock anchor foundation structure, including a foundation cap 1 and a plurality of foundation piles 2 arranged below the foundation cap 1, and also including: a plurality of outer sleeves 3 and a plurality of inner sleeves 31, a plurality of first insertion holes 11 are equidistantly opened at the edge of the surface of the foundation cap 1, a second insertion hole 22 communicating with the first insertion hole 11 is opened on the surface of each foundation pile 2, each outer sleeve 3 is inserted from the first insertion hole 11 to the second insertion hole 22, each inner sleeve 31 is arranged in the outer sleeve 3, an anchor body 32 is penetrated in each inner sleeve 31, a threaded barrel 21 is arranged on the inner wall bottom surface of each second insertion hole 22, the upper end and the lower end of each anchor body 32 are provided with threads, the lower end of each anchor body 32 is threadedly connected to the threaded barrel 21, and the upper end of each anchor body 32 is threadedly sleeved with an anchor nut 34.

[0027] The bottom end of each outer sleeve 3 is respectively fitted with the upper end of the threaded tube 21, and the upper end of each outer sleeve 3 is sleeved with a positioning flange 33. A plurality of circular grooves 12 are equidistantly provided at the edge of the surface of the base support 1, and each circular groove 12 is concentrically designed with each first insertion hole 11. Each positioning flange 33 is respectively arranged in the circular groove 12, and a plurality of guide strips 36 are fixedly provided at equidistant intervals on the inner wall of each outer sleeve 3, and a plurality of guide grooves 35 are equidistantly provided on the outer surface of each inner sleeve 31, and each guide strip 36 is movably inserted into the guide groove 35.

[0028] The inner wall of the outer sleeve 3 is provided with an anti-corrosion coating, and the inner sleeve 31 is made of high-strength plastic. There is a gap between each foundation pile 2 and the bottom of the foundation platform 1, and a rubber pad 5 is arranged in the gap. A plurality of circular holes 51 are equidistantly provided at the edge of the surface of the rubber pad 5. Each outer sleeve 3 is movable through the circular hole 51, and a plurality of connecting screws 41 are equidistantly provided on the central circumference of the foundation platform 1, and a plurality of connecting rings 4 are pre-buried inside the foundation platform 1.

[0029] Each connecting screw 41 passes through the connecting ring 4, and a plurality of reinforcing rods 42 are equidistantly arranged on the outer end of each connecting ring 4. When the foundation structure needs to be constructed, a plurality of first insertion holes 11 are equidistantly arranged on the edge of the surface of the foundation pedestal 1, and a second insertion hole 22 communicating with the first insertion hole 11 is opened on the surface of the foundation pile 2. The outer sleeve 3 is inserted from the first insertion hole 11 into the second insertion hole 22, and the bottom end of the outer sleeve 3 is fitted with the upper end of the threaded tube 21 on the bottom surface of the inner wall of the second insertion hole 22. Then, the inner sleeve 31 is installed in the outer sleeve 3, and the guide strip 36 on the inner wall of the outer sleeve 3 cooperates with the guide groove 35 on the outer surface of the inner sleeve 31 to ensure the accuracy and stability of the installation of the inner sleeve 31.

[0030] Then, the anchor rod body 32 is passed through the inner sleeve 31, and the lower end of the anchor rod body 32 is threadedly connected to the threaded tube 21. The anchor rod body 32 is rotated to be firmly fixed in the threaded tube 21, and the upper end of the anchor rod body 32 is threadedly sleeved with an anchor rod nut 34 to further strengthen the fixation.

[0031] Through the threaded connection between multiple anchor rod bodies 32 and the threaded barrel 21, and the multiple settings of the outer sleeve 3 and the inner sleeve 31, the load is effectively dispersed, the supporting capacity of the foundation for the superstructure is enhanced, and it can adapt to more complex geological conditions and greater load requirements. The components are connected by detachable threaded connections, such as the threaded connection between the anchor rod body 32 and the threaded barrel 21, and the plug-in installation method of the outer sleeve 3 and the inner sleeve 31, making the construction process simpler and faster. At the same time, this design is also convenient for inspection, maintenance and replacement of parts in the later stage. A rubber pad 5 is set in the bottom gap between the foundation pile 2 and the foundation pedestal 1 to play a buffering and protective role.

[0032] The positioning flange 33 at the upper end of the outer sleeve 3 is placed in the circular groove 12 on the surface of the foundation base 1 to ensure the accurate position of the outer sleeve 3. The connecting screws 41 equidistantly arranged on the central circumference of the foundation base 1 pass through the pre-buried connecting ring 4. The reinforcing rod 42 at the outer end of the connecting ring 4 enhances the overall stability of the foundation structure. The connecting screws 41 are connected and fixed to the flange of the equipment so that the entire foundation structure can stably support the upper equipment or building. The anti-corrosion coating on the inner wall of the outer sleeve 3 can prevent corrosion. The inner sleeve 31 is made of high-strength plastic and has good performance and durability. The anti-corrosion coating on the inner wall of the outer sleeve 3 can effectively prevent corrosion. The inner sleeve 31 is made of high-strength plastic and can resist wear and chemical erosion, thereby extending the service life of the foundation structure and reducing maintenance costs.

[0033] The design of the guide strip 36 and the guide groove 35 ensures the accuracy of the installation of the inner sleeve 31. The cooperation of the positioning flange 33 and the circular groove 12 ensures the position accuracy of the outer sleeve 3, thereby reducing errors in construction and improving the quality of the foundation structure. The setting of the rubber pad 5 can absorb and buffer earthquake energy, reduce earthquake damage to the foundation structure, improve the overall seismic performance, and enhance the safety of the building during an earthquake.

[0034] Working principle: The first step is to open a plurality of first insertion holes 11 equidistantly around the edge of the surface of the foundation platform 1, and open a second insertion hole 22 on the surface of the foundation pile 2 that communicates with the first insertion hole 11. Insert the outer sleeve 3 from the first insertion hole 11 into the second insertion hole 22, and fit the bottom end of the outer sleeve 3 with the upper end of the threaded tube 21 on the bottom surface of the inner wall of the second insertion hole 22. Then install the inner sleeve 31 in the outer sleeve 3, and cooperate with the guide strip 36 on the inner wall of the outer sleeve 3 and the guide groove 35 on the outer surface of the inner sleeve 31 to ensure the accuracy and stability of the installation of the inner sleeve 31. Then, pass the anchor rod body 32 through the inner sleeve 31, and the lower end of the anchor rod body 32 is threadedly connected with the threaded tube 21. The anchor rod body 32 is rotated to be firmly fixed in the threaded barrel 21, and the upper end of the anchor rod body 32 is threadedly sleeved with an anchor rod nut 34 to further strengthen the fixation. Through the threaded connection of multiple anchor rod bodies 32 and the threaded barrel 21, and the multiple settings of the outer sleeve 3 and the inner sleeve 31, the load is effectively dispersed, and the supporting capacity of the foundation to the superstructure is enhanced. It can adapt to more complex geological conditions and greater load requirements. The components are connected by detachable threaded connections, such as the threaded connection of the anchor rod body 32 and the threaded barrel 21, and the plug-in installation method of the outer sleeve 3 and the inner sleeve 31, which makes the construction process simpler and faster. At the same time, this design is also convenient for inspection, maintenance and replacement of parts in the later stage.

[0035] In the second step, a rubber pad 5 is arranged at the bottom gap between the foundation pile 2 and the foundation pedestal 1 to play a role of buffering and protection. The positioning flange 33 at the upper end of the outer sleeve 3 is placed in the circular groove 12 on the surface of the foundation pedestal 1 to ensure the accurate position of the outer sleeve 3. The connecting screws 41 equidistantly arranged on the central circumference of the foundation pedestal 1 pass through the pre-buried connecting ring 4. The reinforcing rod 42 at the outer end of the connecting ring 4 enhances the overall stability of the foundation structure. The connecting screws 41 are connected and fixed to the flange of the equipment so that the entire foundation structure can stably support the upper equipment or building. The anti-corrosion coating on the inner wall of the outer sleeve 3 can prevent corrosion. The inner sleeve 31 is made of high-strength plastic and has good performance and durability. The anti-corrosion coating on the inner wall of the outer sleeve 3 can effectively prevent corrosion. The inner sleeve 31 is made of high-strength plastic and can resist wear and chemical erosion, thereby extending the service life of the foundation structure and reducing maintenance costs.

[0036] In the third step, the design of the guide strip 36 and the guide groove 35 ensures the accuracy of the installation of the inner sleeve 31, and the cooperation of the positioning flange 33 and the circular groove 12 ensures the position accuracy of the outer sleeve 3, thereby reducing errors in construction and improving the quality of the foundation structure.

[0037] The fourth step is that the rubber pad 5 can absorb and buffer the earthquake energy, reduce the damage of the earthquake to the foundation structure, improve the overall earthquake resistance, and enhance the safety of the building during an earthquake.

[0038] Example 2 A method for constructing a casing type rock bolt foundation structure comprises the following steps: 1.1) A plurality of first insertion holes 11 are provided at equal intervals on the edge of the surface of the foundation platform 1; 1.2) A second insertion hole 22 communicating with the first insertion hole 11 is provided on the surface of the foundation pile 2; 1.3) Insert the outer sleeve 3 from the first insertion hole 11 into the second insertion hole 22, so that the bottom end of the outer sleeve 3 fits with the upper end of the threaded tube 21 on the bottom surface of the inner wall of the second insertion hole 22; 1.4) Install the inner sleeve 31 in the outer sleeve 3, and ensure the accuracy and stability of the installation of the inner sleeve 31 by the cooperation between the guide strip 36 on the inner wall of the outer sleeve 3 and the guide groove 35 on the outer surface of the inner sleeve 31; 1.5) The anchor rod body 32 is passed through the inner sleeve 31, and the lower end of the anchor rod body 32 is threadedly connected with the threaded tube 21. The anchor rod body 32 is rotated to be firmly fixed in the threaded tube 21, and the upper end of the anchor rod body 32 is threadedly sleeved with an anchor rod nut 34 to further strengthen the fixation; 2) A rubber pad 5 is arranged at the bottom gap between the foundation pile 2 and the foundation cap 1, and the positioning flange 33 at the upper end of the outer sleeve 3 is placed in the circular groove 12 on the surface of the foundation cap 1; 3) The connecting screws 41 equidistantly arranged on the central circumference of the foundation platform 1 penetrate the pre-buried connecting ring 4, and the reinforcing rods 42 at the outer ends of the connecting ring 4 enhance the overall stability of the foundation structure; 4) The design of the guide strip 36 and the guide groove 35 ensures the accuracy of the installation of the inner sleeve 31 , and the cooperation of the positioning flange 33 and the circular groove 12 ensures the position accuracy of the outer sleeve 3 .

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A casing type rock bolt foundation structure, comprising a foundation cap (1) and a plurality of foundation piles (2) arranged below the foundation cap (1), characterized in that: Also includes: A plurality of outer sleeves (3) and a plurality of inner sleeves (31); A plurality of first insertion holes (11) are equidistantly provided at the edge of the surface of the foundation platform (1), a second insertion hole (22) communicating with the first insertion hole (11) is provided on the surface of each foundation pile (2), each outer sleeve (3) is inserted from the first insertion hole (11) into the second insertion hole (22), and each inner sleeve (31) is arranged in the outer sleeve (3); Each of the inner sleeves (31) is penetrated by an anchor rod body (32), the inner wall bottom surface of each of the second insertion holes (22) is provided with a threaded tube (21), the upper end and the lower end of each of the anchor rod bodies (32) are provided with threads, the lower end of each of the anchor rod bodies (32) is threadedly connected to the threaded tube (21), and the upper end of each of the anchor rod bodies (32) is threadedly sleeved with an anchor rod nut (34).

2. A casing type rock bolt foundation structure according to claim 1, characterized in that: The bottom end of each outer sleeve (3) is respectively fitted with the upper end of the threaded tube (21).

3. A casing type rock bolt foundation structure according to claim 2, characterized in that: The upper end portion of each outer sleeve (3) is sleeved with a positioning flange (33).

4. A casing type rock bolt foundation structure according to claim 3, characterized in that: A plurality of circular grooves (12) are equidistantly provided at the edge of the surface of the foundation platform (1); Wherein, each of the circular grooves (12) is designed to be concentric with each of the first insertion holes (11).

5. A casing type rock bolt foundation structure according to claim 4, characterized in that: Each of the positioning flanges (33) is respectively arranged in the circular groove (12).

6. A casing type rock bolt foundation structure according to claim 5, characterized in that: The inner wall of each outer sleeve (3) is provided with a plurality of guide strips (36) fixedly arranged at equal intervals around the circumference.

7. A casing type rock bolt foundation structure according to claim 6, characterized in that: The outer surface of each inner sleeve (31) is provided with a plurality of guide grooves (35) at equal intervals around the circumference; Wherein, each of the guide strips (36) is movably inserted into the guide groove (35).

8. A casing type rock bolt foundation structure according to claim 7, characterized in that: The inner wall of the outer sleeve (3) is provided with an anti-corrosion coating; Wherein, the inner sleeve (31) is made of high-strength plastic.

9. A casing type rock bolt foundation structure according to claim 8, characterized in that: There is a gap between each foundation pile (2) and the bottom of the foundation platform (1), and a rubber pad (5) is provided in the gap; wherein a plurality of circular holes (51) are equidistantly provided at the edge of the surface of the rubber pad (5), and each of the outer sleeves (3) is movably inserted through the circular hole (51); A plurality of connecting screws (41) are equidistantly arranged on the central circumference of the foundation support (1), a plurality of connecting rings (4) are pre-buried inside the foundation support (1), and each of the connecting screws (41) passes through the connecting ring (4); wherein a plurality of reinforcing rods (42) are equidistantly arranged on the outer end of each connecting ring (4).

10. A method for constructing the casing type rock bolt foundation structure according to claim 9, characterized in that: The following steps are involved: A plurality of first insertion holes (11) are provided at equal intervals around the edge of the surface of the foundation platform (1); A second insertion hole (22) communicating with the first insertion hole (11) is provided on the surface of the foundation pile (2); Inserting the outer sleeve (3) from the first insertion hole (11) into the second insertion hole (22), so that the bottom end of the outer sleeve (3) fits with the upper end of the threaded tube (21) on the bottom surface of the inner wall of the second insertion hole (22); The inner sleeve (31) is installed in the outer sleeve (3), and the guide strip (36) on the inner wall of the outer sleeve (3) cooperates with the guide groove (35) on the outer surface of the inner sleeve (31); The anchor rod body (32) is passed through the inner sleeve (31), the lower end of the anchor rod body (32) is threadedly connected to the threaded tube (21), the anchor rod body (32) is fixed in the threaded tube (21) by rotating it, and the upper end of the anchor rod body (32) is threadedly sleeved with an anchor rod nut (34); A rubber pad (5) is arranged at the bottom gap between the foundation pile (2) and the foundation cap (1), and a positioning flange (33) at the upper end of the outer sleeve (3) is placed in a circular groove (12) on the surface of the foundation cap (1).

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