Anti-floating anchor rod and anti-floating mechanism

Abstract

The application relates to the technical field of building anti-floating technology, and discloses an anti-floating anchor rod and an anti-floating mechanism. The anti-floating anchor rod comprises a plurality of reinforcing bars, a plurality of positioning discs, a plurality of base discs and a grouting pipe. All the reinforcing bars form a base ring array. The positioning discs are fixedly arranged on all the reinforcing bars, and the outer diameter of the positioning discs matches the hole diameter of the anchor rod drilling. A grouting hole is coaxially and throughly arranged in the middle of the positioning disc along the thickness direction. The base discs are fixedly arranged on all the reinforcing bars. A booster hole is coaxially and throughly arranged in the middle of the base disc along the thickness direction. The booster hole is internally threaded. The grouting pipe is coaxially and throughly arranged in all the grouting holes and all the booster holes. A plurality of booster plugs are coaxially and fixedly sleeved on the outer wall of the grouting pipe. The booster plugs correspond to the grouting holes one by one. The booster plugs are circular truncated cone-shaped. A plurality of external threads are arranged on the outer wall of the grouting pipe at intervals, and the external threads correspond to the base discs one by one and are screw-connected with the base discs. The anti-floating anchor rod can solve the problems that the existing anti-floating anchor rod cannot consider the verticality and concentricity of the lower part and the smooth grouting of the concrete.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building anti-floating, and particularly relates to an anti-floating anchor rod and an anti-floating mechanism. BACKGROUND

[0002] Building anti-floating refers to a series of design and construction measures taken in buildings, especially underground buildings or foundation engineering, to resist the uplift force caused by water level changes or groundwater pressure. Such problems usually occur in areas with high water levels or underground building structures, such as underground parking lots, underground warehouses, water pools, etc.

[0003] In building anti-floating design, the common structure form is an anti-floating anchor rod. The anti-floating anchor rod is a measure to enhance the anti-floating capacity by setting anchor rods in the foundation of a building or structure. It fixes the foundation or structure of the building to the underground stratum through the anti-floating anchor rod, thereby resisting the uplift pressure caused by the groundwater uplift force and improving the stability of the building. Specifically, the anti-floating anchor rod forms a tensile force against the uplift force by combining with the underground layer. When the uplift force acts on the foundation, the anchor rod will generate a tensile force to transfer the uplift force to the underground soil layer or rock, thereby effectively preventing the building from floating or tilting.

[0004] When the anti-floating anchor rod is set, a vertical drill is first drilled into the building bottom surface to form an anchor rod drill hole that penetrates the underground layer. Then the anti-floating anchor rod is vertically lowered into the anchor rod drill hole. Next, concrete is poured into the anchor rod drill hole until it overflows. After the concrete is initially set, the anti-floating anchor rod is pre-tensioned. After the concrete is completely set, the anti-floating anchor rod is integrated with the building stratum through the concrete in the anchor rod drill hole. Then the anti-floating anchor rod is further tensioned. Finally, a subsequent cover layer is laid or poured on the building stratum to bury the anti-floating anchor rod and completely integrate it with the bottom of the building.

[0005] The existing anti-floating anchor rod generally has the following problems: In order to successfully lower the anti-floating anchor rod, the maximum diameter of the anti-floating anchor rod is generally smaller than the hole diameter of the anchor rod drill hole. In this case, although the lowering is successful, the anti-floating anchor rod cannot be guaranteed to be coaxially arranged with the anchor rod drill hole after being lowered, resulting in the anti-floating anchor rod being inclined. When tensioned subsequently, the tensile force borne by the anti-floating anchor rod and the concrete poured into the anchor rod drill hole will generate a horizontal component force, which will inevitably affect the structural performance of the anti-floating anchor rod and the concrete and the tight fitting structure between the concrete and the anchor rod drill hole. However, if the maximum diameter of the anti-floating anchor rod is set to match the hole diameter of the anchor rod drill hole, although the verticality and concentricity of the anti-floating anchor rod after being lowered can be guaranteed, the anti-floating anchor rod will cause a large area of obstruction to the anchor rod drill hole, thereby preventing the subsequent pouring of concrete and causing problems such as the inability to smoothly pour into the anchor rod drill hole. In severe cases, an empty space may be formed in the anchor rod drill hole, which will seriously affect the structural performance of the poured concrete and the final anti-floating performance.

[0006] In view of this, the present application is proposed. SUMMARY

[0007] The present application aims to provide an anti-floating anchor rod, which solves the problem that the existing anti-floating anchor rod cannot take into account the verticality and concentricity below and the smooth pouring of concrete.

[0008] The present application is achieved by the following technical solutions:

[0009] An anti-floating anchor rod comprises a plurality of reinforcing bars, all of which are arranged in parallel and uniformly spaced in a ring shape to form a base ring array; a plurality of positioning discs, which are coaxially arranged with the base ring array and fixedly penetrated by all the reinforcing bars, the outer diameter of the positioning disc matches the hole diameter of the anchor rod drill hole, and a grouting hole is coaxially and throughly opened in the middle of the positioning disc along the thickness direction; a plurality of base discs, which are coaxially arranged with the base ring array and fixedly penetrated by all the reinforcing bars, the outer diameter of the base disc is much smaller than the hole diameter of the anchor rod drill hole and slightly larger than the diameter of the base ring array, a booster hole is coaxially and throughly opened in the middle of the base disc along the thickness direction, and the booster hole is internally threaded; and a grouting pipe, which is coaxially sleeved in the base ring array and coaxially penetrates all the grouting holes and all the booster holes, a plurality of booster plugs are coaxially and fixedly sleeved outside the grouting pipe, the booster plugs correspond one-to-one to the grouting holes, the booster plugs are circular truncated cone-shaped, the diameter of the first bottom surface of the booster plug is smaller than the hole diameter of the grouting hole, the diameter of the second bottom surface of the booster plug is larger than the hole diameter of the grouting hole, and the outer wall of the grouting pipe is spaced apart by a plurality of external threads and correspondingly and threadedly connected to the base disc, so that when the grouting pipe rotates, the booster plug can gradually plug into the corresponding grouting hole.

[0010] Optionally, the booster plug is an elastic member; the inner wall of the grouting hole is provided as a conical surface; the taper of the inner wall of the grouting hole is smaller than the taper of the outer wall of the booster plug; the axial length of the booster plug is greater than 2 times the thickness of the positioning disc, and when the booster plug is tightly plugged into the grouting hole, the part of the booster plug close to the second bottom surface is located in the grouting hole.

[0011] Optionally, the positioning discs and the base discs are alternately arranged in pairs, and a base section is clamped between each pair of positioning disc and base disc; an expansion mechanism is coaxially sleeved outside each base section, and when the booster plug is plugged into the grouting hole, the expansion mechanism expands radially and contacts and presses the hole wall of the anchor rod drill hole.

[0012] Optionally, the expansion mechanism comprises a pressing disc, an expansion piece and a plurality of clamping claws; the pressing disc is coaxially arranged with the base ring array and is slidably provided with the plurality of pull bars, the outer diameter of the pressing disc is much smaller than the hole diameter of the anchor rod drill hole and slightly larger than the diameter of the base ring array, a central portion of the pressing disc is coaxially provided with an expansion hole in the thickness direction, the expansion hole is coaxially rotatably connected with the grouting pipe, the grouting pipe is provided with a limiting piece, the limiting piece is capable of axially limiting the pressing disc to move synchronously with the grouting pipe; the expansion piece comprises a cross shaft hinged active expansion rod and a passive expansion rod, one end of the active expansion rod is hingedly connected with the pressing disc, and the same side end of the passive expansion rod is hingedly connected with the corresponding base disc; when the pressing disc gradually approaches the corresponding base disc along the axial direction of the grouting pipe, the included angle between the active expansion rod and the passive expansion rod gradually decreases, so that the free end of the active expansion rod and the free end of the passive expansion rod gradually expand outward; the clamping claws are arranged at the free end of the active expansion rod and the free end of the passive expansion rod, and the clamping claws are used for being inserted into the hole wall of the anchor rod drill hole.

[0013] Optionally, the plane where each pair of the active expansion rod and the passive expansion rod is located is coplanar with the axis of the grouting pipe; when the pressing disc gradually approaches the corresponding positioning disc along the axial direction of the grouting pipe, the active expansion rod and the passive expansion rod gradually tend to be parallel, so that the outer diameter of the entire expansion mechanism is much smaller than the hole diameter of the anchor rod drill hole.

[0014] Optionally, the limiting piece comprises a pair of clamping discs, the pressing disc is clamped between the two clamping discs, the clamping discs are coaxially fixedly connected with the grouting pipe, the outer diameter of the clamping disc is smaller than the inner diameter of the base ring array and larger than the hole diameter of the expansion hole.

[0015] Optionally, the thickness of the positioning disc gradually decreases in the direction of radially outward, so that the opposite two surfaces of the outer ring of the positioning disc are both inclined surfaces or smooth curved surfaces.

[0016] Optionally, the top end of the grouting pipe is provided with a screwing part, and the screwing part is in the shape of a prism.

[0017] An anti-floating mechanism comprises: a prefabricated base comprising a pressure bearing layer, a filling layer and a cover layer which are sequentially stacked from bottom to top, the prefabricated base is used for being pre-buried in a building foundation; an anchor rod drill hole vertically provided in a stratum, a top end of the anchor rod drill hole penetrates through the pressure bearing layer; any one of the anti-floating anchor rods, the anti-floating anchor rod is vertically inserted into the anchor rod drill hole, and the outer diameter of the positioning disc matches the hole diameter of the anchor rod drill hole; the anchor rod drill hole is poured with concrete, and the anti-floating anchor rod is connected with the prefabricated base into an integrated whole through the concrete.

[0018] Optionally, the top end cover of the anchor rod borehole is provided with a bottom bearing plate, the size of the bottom bearing plate is larger than the aperture of the anchor rod borehole; the top end of the base ring array penetrates through the bottom bearing plate and is connected with a top tension seat in penetration, the bottom bearing plate is vertically connected with a plurality of tension rods, all the tension rods are arranged in a ring shape, the top end of the tension rod penetrates through the filling layer; the top surface of the filling layer is paved with a top bearing plate, the top end of the tension rod penetrates through the top bearing plate and is fixedly connected with the top bearing plate; the top surface of the filling layer is embedded with a bearing net layer, the area of the bearing net layer is much larger than the area of the top bearing plate, the top end of the tension rod is arranged in the bearing net layer, and the top bearing plate is located above the bearing net layer.

[0019] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0020] The anti-floating anchor rod provided by the application comprises a plurality of base rings and a plurality of positioning discs, the base rings are arranged in an array and are fixedly arranged in a plurality of anchor rod drill holes, the positioning discs are coaxially arranged in the base ring array, the outer diameter of the positioning disc is matched with the hole diameter of the anchor rod drill hole, the grouting hole is arranged in the middle of the positioning disc along the thickness direction and is coaxially arranged with the grouting pipe, the concrete can be directly and smoothly poured into the bottom of the anchor rod drill hole, the concrete can be easily poured from the grouting hole, the problem that the concrete is difficult to pour and is easy to produce a cavity to affect the performance of the concrete structure and the anti-floating performance of the anti-floating anchor rod is effectively avoided, the plurality of pressure boosting plugs are fixedly arranged on the grouting pipe, the pressure boosting plug is matched with the grouting hole, the shape of the pressure boosting plug is arranged, the grouting pipe is axially moved after the concrete is poured, the pressure boosting plug is gradually inserted into the corresponding grouting hole, the pressure of the concrete in the space between the two adjacent positioning discs is gradually increased, the pressure between the concrete and the hole wall of the anchor rod drill hole is increased, the friction between the two is increased after the concrete is solidified, the structural performance and the anti-floating performance of the anti-floating anchor rod structure are improved, the plurality of base discs are arranged, the base disc is fixedly arranged in the base ring array, the pressure boosting hole is arranged in the middle of the base disc along the thickness direction and is arranged with internal threads, a plurality of external threads are arranged on the outer wall of the grouting pipe, the grouting pipe is screwed with the base disc, the pressure boosting plug is smoothly inserted into the grouting hole, the anti-floating anchor rod can effectively solve the problem that the existing anti-floating anchor rod cannot consider the verticality and the concentricity and the concrete is smoothly poured. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0022] Figure 1 A front view of the anti-floating anchor rod provided by the embodiments of the application;

[0023] Figure 2 A top view of the positioning disc of the anti-floating anchor rod provided by the embodiments of the application;

[0024] Figure 3A partial view of the positioning disc, base disc, grouting pipe and pressure boosting plug of the anti-floating anchor rod provided by the embodiment of the present application;

[0025] Figure 4 and Figure 5 The front view schematic diagrams of the initial state and the expanded state of the expansion mechanism of the anti-floating anchor rod provided by the embodiment of the present application, respectively;

[0026] Figure 6 The top view schematic diagram of the pressure disc of the anti-floating anchor rod provided by the embodiment of the present application;

[0027] Figure 7 The front view schematic diagram of the anti-floating mechanism provided by the embodiment of the present application;

[0028] Figure 8 The partial enlarged schematic diagram of the prefabricated base of the anti-floating mechanism provided by the embodiment of the present application.

[0029] The marks in the drawings and the corresponding names of the parts:

[0030] 1-Pressure bearing layer; 2-Filling layer; 3-Cover layer; 4-Anchor rod borehole; 5-Bottom bearing plate; 6-Top tensioning seat; 7-Tensioning rod; 8-Top bearing plate; 9-Tensioning net layer; 10-Tensioning bar; 20-Positioning disc; 21-Grouting hole; 30-Base disc; 31-Pressure boosting hole; 40-Grouting pipe; 41-Pressure boosting plug; 42-Limiting part; 43-Twisting part; 50-Pressure disc; 501-Expansion hole; 51-Expansion part; 511-Active expansion rod; 512-Passive expansion rod; 52-Catch. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below in combination with the embodiments and the drawings, the schematic embodiments of the present application and the description thereof are only used to explain the present application, and do not limit the present application.

[0032] Please refer to Figures 1 to 6The embodiment of the present application provides an anti-floating anchor rod, which comprises a plurality of reinforcing bars 10, all the reinforcing bars 10 are arranged in parallel and are uniformly distributed in a ring shape to form a base ring array, a plurality of positioning discs 20 are coaxially arranged with the base ring array and are fixedly penetrated by all the reinforcing bars 10, the outer diameter of the positioning disc 20 matches the hole diameter of an anchor rod drilling hole, a grouting hole 21 is coaxially and throughly formed in the middle of the positioning disc 20 along the thickness direction, a plurality of base discs 30 are coaxially arranged with the base ring array and are fixedly penetrated by all the reinforcing bars 10, the outer diameter of the base disc 30 is much smaller than the hole diameter of the anchor rod drilling hole and is slightly larger than the diameter of the base ring array, a booster hole 31 is coaxially and throughly formed in the middle of the base disc 30 along the thickness direction, the booster hole 31 is internally threaded, a grouting pipe 40 is coaxially sleeved in the base ring array and is coaxially through all the grouting holes 21 and all the booster holes 31, a plurality of booster plugs 41 are coaxially and fixedly sleeved outside the grouting pipe 40, the booster plug 41 corresponds to the grouting hole 21 one by one, the booster plug 41 is in a circular truncated cone shape, the diameter of the first bottom surface of the booster plug 41 is smaller than the hole diameter of the grouting hole 21, the diameter of the second bottom surface of the booster plug 41 is larger than the hole diameter of the grouting hole 21, a plurality of external threads are formed on the outer wall of the grouting pipe 40 at intervals and are screwed with the base disc 30 one by one to enable the booster plug 41 to be gradually plugged into the corresponding grouting hole 21 when the grouting pipe 40 rotates.

[0033] The anti-floating anchor provided by the embodiment comprises a plurality of reinforcing bars 10 arranged to form a base ring array, thereby forming a main tension structure of the anti-floating anchor; a plurality of positioning discs 20 are arranged to be fixedly penetrated by the base ring array; the outer diameter of the positioning disc 20 is matched with the hole diameter of the anchor hole; when the anti-floating anchor is lowered, the positioning disc 20 can fully ensure the verticality of the anti-floating anchor and the concentricity with the anchor hole; a grouting hole 21 is arranged in the middle of the positioning disc 20 and penetrates the thickness direction, and a grouting pipe 40 is coaxially penetrated, concrete can be directly and smoothly poured into the bottom of the anchor hole by the operation of the grouting pipe 40, and gradually poured up at the bottom of the anchor hole, in the process, although it is difficult for the concrete to pass through the edge of the positioning disc 20, it can easily flow up from the grouting hole 21, thereby effectively avoiding the problem that the concrete is difficult to pour and is easy to produce a cavity, thereby affecting the performance of the concrete structure and the anti-floating performance of the anti-floating anchor; a plurality of pressure boosters 41 are fixedly sleeved on the grouting pipe 40, the pressure boosters 41 are one-to-one corresponding to the grouting holes 21, and the shape of the pressure boosters 41 is arranged; after the concrete pouring is completed, the grouting pipe 40 is axially oriented and moved, so that the pressure boosters 41 are gradually inserted into the corresponding grouting holes 21, thereby the volume of the pressure boosters 41 and the volume of the original concrete in the grouting hole 21 are both pressed into the space between the adjacent two positioning discs 20, and the edge of the positioning disc 20 and the hole wall of the anchor hole are sealed, therefore the pressure of the concrete in the space between the adjacent two positioning discs 20 will gradually increase with the insertion of the pressure boosters 41, thereby the pressure between the concrete and the hole wall of the anchor hole is increased, thereby the friction between the two is increased after the concrete is solidified, thereby the final structural performance and anti-floating performance of the anti-floating anchor structure are improved; a plurality of base discs 30 are arranged to be fixedly penetrated by the base ring array, a pressure boosting hole 31 is arranged in the middle of the base disc 30 and penetrates the thickness direction, and an internal thread is arranged, at the same time, a plurality of external threads are arranged on the corresponding positions of the outer wall of the grouting pipe 40, so that the grouting pipe 40 is screwed with the base disc 30, thereby the axial movement of the grouting pipe 40 is realized by screwing, so that the pressure boosters 41 can be smoothly inserted into the grouting holes 21; through the cooperation of the above-mentioned features, the anti-floating anchor can effectively solve the problem that the existing anti-floating anchor cannot consider the verticality and concentricity below and the concrete is smoothly poured.

[0034] In order to further improve the pressure boosting effect of the pressure boosters 41, the pressure boosters 41 are elastic members; the inner wall of the grouting hole 21 is arranged as a conical surface; the taper of the inner wall of the grouting hole 21 is smaller than the taper of the outer wall of the pressure boosters 41; the axial length of the pressure boosters 41 is greater than 2 times the thickness of the positioning disc 20; when the pressure boosters 41 are tightly inserted into the grouting hole 21, the part of the pressure boosters 41 close to the second bottom surface is located in the grouting hole 21.

[0035] By setting the booster plug 41 as an elastic member, setting the inner wall of the grouting hole 21 as a conical surface, and the taper being smaller than the taper of the booster plug 41, the small-diameter end of the booster plug 41 can directly pass through the large-diameter end of the grouting hole 21 and be inserted into the small-diameter end of the grouting hole 21, directly sealing the grouting hole 21. Then, since the booster plug 41 is an elastic member, and considering the difference in taper, the booster plug 41 will continue to gradually penetrate into the grouting hole 21 and deform, thereby gradually increasing the sealing performance between the two through the inclined surface cooperation while increasing the depth of insertion. Cooperating, the length of the booster plug 41 is much longer than the thickness of the positioning disc 20, so that the booster plug 41 can be inserted a large amount, thereby significantly increasing the pressure of the concrete and improving the pressure between the concrete and the hole wall of the anchor hole, thereby improving the friction between the two, thereby improving the structural performance and anti-floating performance of the anti-floating anchor.

[0036] In order to further improve the pressure between the anti-floating anchor and the hole wall of the anchor hole, the positioning disc 20 and the base disc 30 are alternately arranged in pairs, and one base section is clamped between each pair of positioning disc 20 and base disc 30; each base section is coaxially sleeved with an expansion mechanism, and when the booster plug 41 is inserted into the grouting hole 21, the expansion mechanism expands radially and contacts and extrudes the hole wall of the anchor hole.

[0037] In order to further explain the specific structure of the expansion mechanism, the expansion mechanism includes a pressure disc 50, an expansion member 51, and a plurality of clamping claws 52; the pressure disc 50 is coaxially arranged with the base ring array and is slidably provided with all the reinforcing ribs, the outer diameter of the pressure disc 50 is much smaller than the hole diameter of the anchor hole and slightly larger than the diameter of the base ring array, the middle part of the pressure disc 50 is coaxially provided with an expansion hole 501 in the thickness direction, and the pressure disc 50 is coaxially rotatably connected with the grouting pipe 40 through the expansion hole 501, the grouting pipe 40 is provided with a limiting member 42, the limiting member 42 can axially limit the pressure disc 50, so that the pressure disc 50 and the grouting pipe 40 move synchronously in the axial direction; the expansion member 51 includes a driving expansion rod 511 and a driven expansion rod 512, one end of the driving expansion rod 511 is hinged with the pressure disc 50, and the same side end of the driven expansion rod 512 is hinged with the corresponding base disc 30; when the pressure disc 50 gradually approaches the corresponding base disc 30 along the axial direction with the grouting pipe 40, the included angle between the driving expansion rod 511 and the driven expansion rod 512 gradually decreases, so that the free end of the driving expansion rod 511 and the free end of the driven expansion rod 512 gradually expand outward; the clamping claws 52 are arranged at the free end of the driving expansion rod 511 and the free end of the driven expansion rod 512, and the clamping claws 52 are used for inserting into the hole wall of the anchor hole.

[0038] Through the above arrangement, when the concrete pouring is completed, gradually rotate the grouting pipe 40 to drive the pressure plug 41 to gradually plug into the grouting hole 21 to pressurize the concrete, at the same time, the grouting pipe 40 synchronously drives the pressure plate 50 to gradually approach the corresponding base plate 30, thereby extruding the expansion piece 51, gradually changing the angle between the active expansion rod 511 and the passive expansion rod 512, and thereby expanding the free ends of the two to outwardly expand until the claws 52 at the free ends of the active expansion rod 511 and the passive expansion rod 512 contact the hole wall of the anchor rod hole and are further gradually inserted into the hole wall to further improve the connection performance between the anti-floating anchor rod and the anchor rod hole. Synchronously, the pressurized concrete will also cover the active expansion rod 511, the passive expansion rod 512 and the claws 52 and seep into the insertion of the claws 52 under the action of pressure, thereby further greatly improving the connection performance between the anti-floating anchor rod and the anchor rod hole and the structural performance of the claws 52.

[0039] In order to avoid the claws 52 scratching the hole wall of the anchor rod hole when the anti-floating anchor rod is lowered and to avoid hindering the concrete pouring, the plane where each pair of the active expansion rod 511 and the passive expansion rod 512 is located is coplanar with the axis of the grouting pipe 40; when the pressure plate 50 gradually approaches the corresponding positioning plate 20 along the axial direction with the grouting pipe 40, the active expansion rod 511 and the passive expansion rod 512 gradually tend to be parallel, so that the outer diameter of all the expansion mechanisms is much smaller than the hole diameter of the anchor rod hole.

[0040] In order to further explain the specific mechanism of the limiting piece 42 to explain the rotating cooperation and axial limiting relationship between the pressure plate 50 and the grouting pipe 40, the limiting piece 42 includes a pair of clamping plates, the pressure plate 50 is clamped between the two clamping plates, the clamping plates are coaxially fixedly connected with the grouting pipe 40, the outer diameter of the clamping plate is smaller than the inner diameter of the base ring array and larger than the hole diameter of the expansion hole 501.

[0041] In order to avoid scratching the hole wall of the anchor rod hole during the lowering of the anti-floating anchor rod, the thickness of the positioning plate 20 gradually decreases in the direction of radially outward, so that the opposite two surfaces of the outer ring of the positioning plate 20 are both inclined surfaces or smooth curved surfaces.

[0042] In order to facilitate the screwing of the grouting pipe 40, the top end of the grouting pipe 40 is provided with a screwing part 43, and the screwing part 43 is in the shape of a prism.

[0043] It should be noted that a screwing device matched with the screwing part 43 can be provided to replace the manual screwing of the grouting pipe 40.

[0044] Please further refer to Figures 1 to 6 , on the basis of Figure 7 and Figure 8The embodiment of the present application also provides an anti-floating mechanism, comprising: a prefabricated base, which comprises a pressure bearing layer 1, a filling layer 2 and a cover layer 3 which are sequentially stacked from bottom to top, and is used for being embedded in a building foundation; a second anchor rod drill hole 4 which is vertically formed in the stratum, and the top end of the anchor rod drill hole 4 penetrates through the pressure bearing layer 1; a third anti-floating anchor rod, which is any one of the anti-floating anchor rods, and is vertically inserted into the anchor rod drill hole 4, and the outer diameter of the positioning disc 20 matches the hole diameter of the anchor rod drill hole 4; and the anchor rod drill hole 4 is poured with concrete, and the anti-floating anchor rod is connected with the prefabricated base by the concrete to be integrated.

[0045] In order to further improve the structural strength and structural integrity, the top end of the anchor rod drill hole 4 is provided with a bottom bearing plate 5, the size of the bottom bearing plate 5 is greater than the hole diameter of the anchor rod drill hole 4; the top end of the base ring array penetrates through the bottom bearing plate 5 and is connected with a top tension seat 6, a plurality of tension rods 7 are vertically connected to the bottom bearing plate 5, all the tension rods 7 are arranged in a ring shape, and the top end of the tension rod 7 penetrates through the filling layer 2; the top surface of the filling layer 2 is paved with a top bearing plate 8, the top end of the tension rod 7 penetrates through the top bearing plate 8 and is fixedly connected with the top bearing plate 8; and a bearing net layer 9 is embedded on the top surface of the filling layer 2, the area of the bearing net layer 9 is much greater than the area of the top bearing plate 8, the top end of the tension rod 7 is arranged in the bearing net layer 9, and the top bearing plate 8 is located above the bearing net layer 9.

[0046] Through the above setting, during preparation, the pressure bearing layer 1 (generally, the pressure bearing layer 1 is a reinforced concrete layer or other material with strong structural performance) is paved on the building stratum, then the anchor rod drill hole 4 is formed by drilling and digging, then the anti-floating anchor rod is lowered, the bottom bearing plate 5 and the top tension seat 6 are installed, then the concrete is poured through the grouting pipe 40 until the concrete overflows from the anchor rod drill hole 4, then the grouting pipe 40 is screwed to make the pressure plug 41 inserted into the grouting hole 21 to increase the pressure, and at the same time, the expansion mechanism is expanded to make the clamping jaw 52 open and inserted into the hole wall of the anchor rod drill hole 4, after the concrete is solidified to a preset degree, the nut at the top end of the tension rod 10 is screwed to be preliminarily tensioned, after the concrete is completely solidified, the nut at the top end of the tension rod 10 is screwed again to be subsequently tensioned, after completion, the filling layer 2 (generally, the filling layer 2 is a material with large structural strength and certain elasticity or plasticity) is paved, then the bearing net layer 9 is embedded, the top bearing plate 8 is installed, the nut at the top end of the tension rod 7 is screwed again to be tensioned, and then the cover layer 3 is paved.

[0047] The above detailed description of the specific embodiments of the present application has been given to understand the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-floating anchor rod, characterized by, The utility model relates to a kind of anchor grouting device, including: Multiple reinforcing bars (10), all the reinforcing bars (10) are arranged in parallel, and are evenly spaced in ring shape to form a base ring array; Multiple positioning discs (20), the positioning disc (20) is coaxially arranged with the base ring array, and is fixedly penetrated with all the reinforcing bars (10), the outer diameter of the positioning disc (20) matches the aperture of anchor rod drilling, and the middle part of the positioning disc (20) is coaxially provided with grouting hole (21) along the thickness direction; Multiple base discs (30), the base disc (30) is coaxially arranged with the base ring array, and is fixedly penetrated with all the reinforcing bars (10), the outer diameter of the base disc (30) is much smaller than the aperture of anchor rod drilling and slightly larger than the diameter of the base ring array, the middle part of the base disc (30) is coaxially provided with booster hole (31) along the thickness direction, and the booster hole (31) is internally threaded; Grouting pipe (40), the grouting pipe (40) is coaxially sleeved in the base ring array, and is coaxially penetrated through all the grouting holes (21) and all the booster holes (31), the grouting pipe (40) is coaxially fixedly sleeved with multiple booster plugs (41) outside, the booster plug (41) corresponds to the grouting hole (21) one by one, the booster plug (41) is circular truncated cone, the diameter of the first bottom surface of the booster plug (41) is smaller than the aperture of the grouting hole (21), the diameter of the second bottom surface of the booster plug (41) is greater than the aperture of the grouting hole (21), and the outer wall of the grouting pipe (40) is spaced apart multiple external threads, and is correspondingly screwed with the base disc (30) to make the booster plug (41) gradually plug into the corresponding grouting hole (21) when the grouting pipe (40) rotates.

2. Anti-floating anchor rod according to claim 1, characterized in that The booster plug (41) is an elastic member; The inner wall of the grouting hole (21) is provided as a conical surface; The taper of the inner wall of the grouting hole (21) is smaller than the taper of the outer wall of the booster plug (41); The axial length of the booster plug (41) is greater than 2 times the thickness of the positioning disc (20), when the booster plug (41) is tightly plugged into the grouting hole (21), the part close to the second bottom surface of the booster plug (41) is located in the grouting hole (21).

3. Anti-floating anchor rod according to claim 2, characterized in that The positioning disc (20) and the base disc (30) are alternately arranged in pairs, and a base section is clamped between each pair of positioning disc (20) and base disc (30); Each base section coaxially sleeved with an expansion mechanism, when the booster plug (41) is plugged into the grouting hole (21), the expansion mechanism is radially expanded, and is in contact with the hole wall of anchor rod drilling and is extruded.

4. Anti-floating anchor rod according to claim 3, characterized in that The expansion mechanism includes a pressure plate (50), an expansion member (51) and multiple clamping claws (52). The pressing disc (50) is coaxially arranged with the base ring array and is slidably provided with the tension bars, the outer diameter of the pressing disc (50) is much smaller than the hole diameter of the anchor rod drill hole and is slightly larger than the diameter of the base ring array, a middle part of the pressing disc (50) is coaxially and throughly provided with an expansion hole (501) in the thickness direction, and the expansion hole (501) is coaxially and rotationally connected with the grouting pipe (40), the grouting pipe (40) is provided with a limiting piece (42), the limiting piece (42) can axially limit the pressing disc (50) to move synchronously with the grouting pipe (40). The expansion piece (51) comprises a driving expansion rod (511) and a passive expansion rod (512), one end of the driving expansion rod (511) is pivotally connected with the pressing disc (50), and the same side end of the passive expansion rod (512) is pivotally connected with the corresponding base disc (30); when the pressing disc (50) gradually approaches the corresponding base disc (30) along the axial direction with the grouting pipe (40), the included angle between the driving expansion rod (511) and the passive expansion rod (512) gradually decreases, so that the free end of the driving expansion rod (511) and the free end of the passive expansion rod (512) gradually expand outward. The claw (52) is arranged at the free end of the driving expansion rod (511) and the free end of the passive expansion rod (512), and the claw (52) is used for being inserted into the hole wall of the anchor rod drill hole.

5. Anti-floating anchor rod according to claim 4, characterized in that The plane where each pair of the driving expansion rod (511) and the passive expansion rod (512) is located is coplanar with the axis of the grouting pipe (40). When the pressing disc (50) gradually approaches the corresponding positioning disc (20) along the axial direction with the grouting pipe (40), the driving expansion rod (511) and the passive expansion rod (512) gradually tend to be parallel, so that the outer diameter of the expansion mechanism is much smaller than the hole diameter of the anchor rod drill hole.

6. The anti-floating anchor of claim 4, wherein, The limiting piece (42) comprises a pair of clamping discs, the pressing disc (50) is clamped between the two clamping discs, the clamping discs are coaxially and fixedly connected with the grouting pipe (40), the outer diameter of the clamping disc is smaller than the inner diameter of the base ring array and is larger than the hole diameter of the expansion hole (501).

7. The anti-float anchor of claim 1, wherein, The thickness of the positioning disc (20) gradually decreases in the direction of radially outward, so that the opposite two surfaces of the outer ring of the positioning disc (20) are both inclined surfaces or smooth curved surfaces.

8. The anti-float anchor of claim 1, wherein, The top end of the grouting pipe (40) is provided with a screwing part (43), and the screwing part (43) is in the shape of a prism.

9. An anti-floating mechanism, characterized by, The precast base comprises a pressure bearing layer (1), a filling layer (2) and a cover layer (3) which are sequentially stacked from bottom to top, and the precast base is used for pre-embedding in a building foundation; An anchor rod drill hole (4) is vertically provided in the stratum, and the top end of the anchor rod drill hole (4) penetrates through the pressure bearing layer (1); The anti-floating anchor rod according to any one of claims 1-8 is vertically inserted into the anchor rod drill hole (4), and the outer diameter of the positioning disc (20) matches the hole diameter of the anchor rod drill hole (4); The anti-floating anchor rod according to any one of claims 1-8 is vertically inserted into the anchor rod drill hole (4), and the outer diameter of the positioning disc (20) matches the hole diameter of the anchor rod drill hole (4); The anchor rod bore (4) is poured with concrete, and the anti-floating anchor rod is integrated with the prefabricated foundation through the concrete.

10. The anti-floating mechanism of claim 9, wherein, The top end cover of the anchor rod bore (4) is provided with a bottom bearing plate (5), and the size of the bottom bearing plate (5) is greater than the hole diameter of the anchor rod bore (4); The top end of the base ring array penetrates through the bottom bearing plate (5) and is connected with a top tension seat (6) in penetration, the bottom bearing plate (5) is vertically connected with a plurality of tension rods (7), all the tension rods (7) are arranged in a ring shape, and the top end of the tension rod (7) penetrates through the filling layer (2); The top surface of the filling layer (2) is paved with a top bearing plate (8), the top end of the tension rod (7) penetrates through the top bearing plate (8) and is fixedly connected with the top bearing plate (8); The top surface of the filling layer (2) is embedded with a bearing net layer (9), the area of the bearing net layer (9) is much greater than the area of the top bearing plate (8), the top end of the tension rod (7) is provided in the bearing net layer (9), and the top bearing plate (8) is located above the bearing net layer (9).

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