Anti-floating anchoring structure based on capsule type expanded body anchor rod

Abstract

The application relates to the technical field of building foundations, and particularly relates to an anti-floating anchoring structure based on a capsule type expanding body anchor rod, which comprises an anchor bar, an expanding extrusion cylinder, an anchor hole grouting body and a capsule bag grouting body; the expanding extrusion cylinder comprises an upper sleeve assembly, a lower sleeve assembly, an isolation support pipe, a folded expanding capsule bag, a locking assembly and a vibrating assembly; the isolation support pipe is arranged between the upper sleeve assembly and the lower sleeve assembly, the anchor bar is arranged in the isolation support pipe, the locking assembly is fixedly connected with the tail end of the anchor rod, and the folded expanding capsule bag is arranged outside the periphery of the isolation support pipe; the vibrating assembly is hinged with the isolation support pipe, the anchor rod is moved to drive the vibrating assembly to vibrate, and the vibrating assembly is used for vibrating grouting liquid in the folded expanding capsule bag. In the embodiment, the vibrating assembly is used for vibrating the grouting liquid in the folded expanding capsule bag, so that the structural strength of the capsule bag grouting body is improved, and the pull-out resistance of the anti-floating anchoring structure is improved.

Description

Technical Field

[0001] This application relates to the field of building technology, and in particular to an anti-buoyancy anchoring structure based on a bladder-type expanded anchor rod. Background Technology

[0002] Anti-buoyancy anchors (also known as anti-buoyancy piles or anti-pull-out anchors) are key load-bearing components used in building engineering to resist the uplift of underground structures (such as basements, underground garages, water tanks, foundation pits, etc.). Their core working principle is to transfer the upward buoyancy force on the structure to the stable stratum through the interaction between the anchor body and the surrounding rock and soil, thereby balancing the buoyancy force and preventing the underground structure from floating or being damaged.

[0003] In existing technologies, anti-buoyancy anchors can be constructed using a bladder-type expanded anchor bolt to improve their pull-out resistance. Bladder-type expanded anchor bolts are created by using mechanical reamers or high-pressure jetting to cut and enlarge the rock and soil at the bottom of the anchor hole. A rod with an expansion cylinder is then placed inside the anchor hole. Subsequently, a measured amount of pressurized grout is injected into the bladder of the expansion cylinder, forming an anchor bolt with a large-diameter expanded anchor section at the bottom.

[0004] In existing technologies, since it is difficult to vibrate the concrete slurry inside the bag, a self-compacting concrete slurry with good fluidity is generally injected into the bag so that the slurry actively fills the bag.

[0005] However, the fluidity and slump retention of self-compacting concrete slurry are quite sensitive to material ratio, ambient temperature, and transportation time. Even small fluctuations in the raw materials (cement fineness, mineral admixture activity, aggregate gradation, etc.) of self-compacting concrete can lead to a sharp drop in the self-compacting property of self-compacting concrete. Furthermore, ambient temperature (low temperature) and extended transportation time can also reduce the fluidity of self-compacting concrete slurry and increase the difficulty of self-filling of self-compacting concrete slurry.

[0006] In the existing technology, the use of self-compacting concrete grout to fill the bag poses risks such as reduced self-compacting properties, making it difficult to completely fill the space inside the bag. This results in localized incomplete filling of the self-compacting concrete inside the bag, weakening the tensile and shear bearing capacity of the anti-buoyancy anchor and affecting its pull-out resistance. Summary of the Invention

[0007] To improve the pull-out resistance of anti-buoyancy anchors, this application provides an anti-buoyancy anchoring structure based on a bladder-type expanded body anchor.

[0008] This application provides an anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt, which adopts the following technical solution:

[0009] An anti-buoyancy anchoring structure based on a bladder-type expanded anchor rod is provided. The anti-buoyancy anchoring structure is set in the anchor hole in the soil layer along the vertical downward direction. The anchor hole includes a narrow anchor hole and an expanded bottom anchor hole.

[0010] The anti-buoyancy anchoring structure includes anchor bars, an expansion extrusion cylinder, an anchor hole grouting body, and a grouting bag. The expansion extrusion cylinder is disposed in the enlarged bottom anchor hole and includes an upper sleeve assembly, a lower sleeve assembly, an isolation support tube, a folded expansion bladder, a locking assembly, and a vibrating assembly. The isolation support tube is disposed between the upper sleeve assembly and the lower sleeve assembly. The anchor bars pass through the isolation support tube. The locking assembly is fixedly connected to the end of the anchor rod. The isolation support tube has several connecting holes in a ring for the grout to pass through. The folded expansion bladder is disposed on the outer periphery of the isolation support tube and is fixedly mounted. Between the upper sleeve assembly and the lower sleeve assembly; the upper sleeve assembly is provided with a first inner grouting pipe and a second inner grouting pipe, the first inner grouting pipe delivers grouting fluid into the isolation support pipe, the second inner grouting pipe delivers grouting fluid into the folded expansion bladder, the grouting fluid hardens into a bladder grout body within the folded expansion bladder, the grouting fluid hardens into an anchor hole grout body within the anchor hole, the vibrating assembly is hinged to the isolation support pipe, the outer diameter of the vibrating assembly when unfolded is larger than the radius of the fine anchor hole, the anchor rod moves to drive the vibrating assembly to vibrate, the vibrating assembly is used to vibrate the grouting fluid within the folded expansion bladder.

[0011] By adopting the above technical solution, when the workers place the expansion extrusion cylinder and anchor bar into the anchor hole, the anchor bar can be moved using engineering equipment on the ground, and the anchor bar can be used to drive the vibrating component to vibrate; that is, the vibrating component is used to vibrate the grout in the folded expansion bladder to improve the density and structural strength of the grout in the bladder, thereby improving the pull-out resistance of the anti-buoyancy anchoring structure.

[0012] Optionally, the vibratory assembly includes a baffle, a first spring, and a traction rod; the upper end of the baffle is hinged to the isolation support pipe, and the baffle is used to cover the communicating hole; the first spring includes a fixed end and a free end disposed opposite to each other, the fixed end of the first spring is fixedly connected to the upper end of the baffle, the baffle has a through hole for the traction rod to pass through, the first end of the traction rod is disposed inside the isolation support pipe, and the second end of the traction rod is connected to the free end of the first spring; a driving member is provided on the outer periphery of the anchor bar, and the driving member forces the traction rod to pull the first spring, so that the first spring vibrates the grout.

[0013] By adopting the above technical solution, in this embodiment, when the anchor bar is forced to move by the driving member, the end of the first spring member is pulled by the traction rod; that is, the reciprocating deformation of the first spring member itself is used to vibrate the grouting liquid, so as to improve the density and structural strength of the bag grouting body and improve the pull-out resistance of the anti-buoyancy anchoring structure.

[0014] Optionally, the driving component includes a plurality of push plates, which are circumferentially spaced around the outer periphery of the anchor bar. The upper sleeve assembly is provided with a clearance groove to avoid the push plates. The end of the traction rod is disposed between adjacent push plates. When the anchor bar rotates, the push plates force the traction rod to move, thereby forcing the free end of the first spring member to move, so that the first spring member vibrates the grout.

[0015] By adopting the above technical solution, the ground-based engineering equipment is used to rotate the anchor rod, causing the push plate on the anchor rod to periodically move the traction rod, thereby driving the first spring component to vibrate and grout the grout.

[0016] Optionally, the vibrating assembly further includes a fixing rod, which is fixed to the side of the baffle away from the isolation support tube. The fixing rod is hinged to the traction rod, and the distance from the fixing rod to the second end of the traction rod is greater than the distance from the fixing rod to the first end of the traction rod. The traction rod rotates around the fixing rod.

[0017] By adopting the above technical solution and utilizing the "lever principle", when the driving component drives the first end of the traction rod to move, the distance from the fixed rod to the second end of the traction rod is greater than the distance from the first end of the fixed rod, thereby amplifying the movement of the second end of the traction rod and the free end of the first spring component, and improving the vibration effect of the first spring component on the grouting fluid.

[0018] Optionally, the baffle includes a first component and a second component, the first component and the second component are integrally formed, an included angle is provided between the first component and the second component, the fixed end of the first spring is disposed on the first component, the second component is used to cover the communicating hole, the second component has a through hole for the traction rod to pass through, and a clearance gap is provided between the first spring and the second component.

[0019] By adopting the above technical solution, the baffle is set on the first component and the second component, which is conducive to the contact between the first spring component and the grouting liquid, so as to improve the vibration effect of the first spring component on the grouting liquid.

[0020] Optionally, a reinforcing assembly is also included, which is disposed within the folded expansion bladder. The reinforcing assembly includes an annular stirrup and a fixing connecting rope. The annular stirrup is sleeved on the outer periphery of the isolation support tube. The annular stirrup has a major axis and a minor axis. The minor axis of the annular stirrup is smaller than the diameter of the fine anchor hole, and the major axis of the annular stirrup is larger than the diameter of the fine anchor hole. The fixing connecting rope is used to connect the annular stirrup to the isolation support tube. When the expansion extrusion cylinder passes through the fine anchor hole, the annular stirrup is inclinedly disposed on the outer periphery of the isolation support tube. When the expansion extrusion cylinder expands outward, the annular stirrup rotates in the horizontal direction, and the fixing connecting rope is used to pull the annular stirrup so that the major axis of the vertical projection of the annular stirrup is larger than the diameter of the fine anchor hole.

[0021] By adopting the above technical solution, reinforcing components are installed inside the folded expansion bladder, and grout is injected into the folded expansion bladder, causing it to expand and open. Circular stirrups are horizontally positioned within the folded expansion bladder. Thus, when the grout solidifies and hardens into the grout body within the bladder, the circular stirrups provide lateral restraint, thereby improving the compressive strength and shear resistance of the grout body.

[0022] Optionally, the annular stirrup includes a first long axis end and a second long axis end arranged opposite to each other. When the expansion extrusion cylinder passes through the narrow anchor hole, the elevation of the first long axis end is greater than the elevation of the second long axis end. The reinforcement assembly includes a first traction rope and a second traction rope. The first traction rope has a first traction spring section in the middle. One end of the first traction rope is fixedly connected to the first long axis end of the annular stirrup, and the other end of the first traction rope is fixedly connected to the folded expansion bag. The second traction rope has a second traction spring section in the middle. A guide ring is provided on the outer periphery of the isolation support tube. The second traction rope passes through the guide ring. One end of the second traction rope is fixedly connected to the second end of the traction rod, and the other end of the second traction rope is fixedly connected to the second long axis end of the annular stirrup. When the second end of the traction rod pulls the second traction rope to move, the first traction rope and the second traction rope force the annular stirrup to vibrate, and the annular stirrup vibrates to compact the grout.

[0023] By adopting the above technical solution, when the end of the traction rod moves, in addition to pulling the first spring member to vibrate the grout, the traction rod also pulls the first traction rope. Since the first traction rope has a first traction spring section in its middle and the second traction rope has a second traction spring section in its middle, both the first and second traction ropes possess a certain degree of elasticity. Therefore, when the traction rod pulls the first traction rope, the combined action of the first and second traction ropes causes the annular stirrup to vibrate. This allows the annular stirrup to vibrate and compact the grout inside and outside the folded expansion bag, further improving the density and structural strength of the grout in the bag and enhancing the pull-out resistance of the anti-buoyancy anchor structure.

[0024] Optionally, along the length of the anchor bar, the reinforcing assembly is provided with multiple reinforcements at intervals, and the long axes of the several annular stirrups have included angles.

[0025] By adopting the above technical solution, the long axes of several annular stirrups are angled along the length of the anchor bar; this allows the several annular stirrups to have a good lateral restraint effect on the grouting body in multiple directions, thereby further improving the structural strength of the grouting body.

[0026] Optionally, the vibrating assembly further includes a second spring member, one end of which is connected to the lower end of the baffle, and the other end of which is connected to the isolation support tube. The second spring member forces the baffle away from the isolation support tube.

[0027] By adopting the above technical solution, a second spring is set between the baffle and the isolation support tube, so that when the folding collision bag expands outward, the second spring will force the baffle to expand outward, thereby improving the stability of the expansion extrusion cylinder operation.

[0028] Optionally, the expansion extrusion cylinder further includes a fixing block, which is fixed to the outer periphery of the isolation support tube and is used for magnetic fixation with the second component.

[0029] By adopting the above technical solution, the second component of the fixing member and the baffle are magnetically fixed to fix the baffle position; thereby facilitating the traction rod to pull the first spring member, so as to improve the vibration effect of the first spring member on the grouting liquid.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. When the workers place the expansion extrusion cylinder and anchor bar into the anchor hole, the anchor bar can be moved using engineering equipment on the ground, and the anchor bar can be used to drive the vibrating assembly to vibrate; that is, the vibrating assembly is used to vibrate the grout in the folded expansion bladder to improve the density and structural strength of the grout in the bladder, thereby improving the pull-out resistance of the anti-buoyancy anchoring structure.

[0032] 2. Utilizing the "lever principle", when the driving component drives the first end of the traction rod to move, the distance from the fixed rod to the second end of the traction rod is greater than the distance from the first end of the fixed rod, thereby amplifying the movement of the second end of the traction rod and the free end of the first spring component, thus improving the vibration effect of the first spring component on the grouting fluid.

[0033] 3. When the end of the traction rod moves, in addition to pulling the first spring member to vibrate the grout, the traction rod also pulls the first traction rope. Since the first traction rope has a first traction spring section in its middle and the second traction rope has a second traction spring section in its middle, both traction ropes possess a certain degree of elasticity. Therefore, when the traction rod pulls the first traction rope, the combined action of the first and second traction ropes causes the annular stirrups to vibrate. This allows the annular stirrups to vibrate and compact the grout inside and outside the folded expansion bag, further improving the density and structural strength of the grout in the bag and enhancing the pull-out resistance of the anti-buoyancy anchor structure. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the existing bladder-type expanded-base anchor bolt.

[0035] Figure 2 This is a schematic diagram of the anti-buoyancy anchoring structure in Example 1.

[0036] Figure 3 This is a schematic diagram of the expansion extrusion cylinder in Example 1.

[0037] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0038] Figure 5 yes Figure 3 Enlarged view of point B in the middle.

[0039] Figure 6 This is a schematic diagram of the vibrating assembly in Example 1.

[0040] Figure 7 This is a schematic diagram of the internal structure of the vibrating assembly in Example 1.

[0041] Figure 8 yes Figure 3 Enlarged view of point C in the middle.

[0042] Figure 9 yes Figure 8 Enlarged view of point D in the middle.

[0043] Figure 10 This is a structural schematic diagram of the stiffening component in Example 2.

[0044] Figure 11This is a structural schematic diagram of the stiffening component in Example 2.

[0045] Figure 12 This is a structural schematic diagram of the stiffening component in Example 2.

[0046] Explanation of reference numerals in the attached drawings: 1. Anchor hole; 11. Narrow anchor hole; 12. Expanded bottom anchor hole; 2. Anchor bar; 21. Push plate; 3. Expansion extrusion cylinder; 31. Upper sleeve assembly; 311. First inner grouting pipe; 312. Second inner grouting pipe; 313. Union joint; 314. One-way grouting valve; 315. Exhaust valve; 316. External grouting pipe; 32. Lower sleeve assembly; 33. Isolation support pipe; 331. Connecting hole; 332. Guide ring; 34. Folded expansion bladder; 35. Locking assembly; 351. First locking nut; 352. Fixing bolt; 353. Washer; 354. Fixing nut; 36. Vibration assembly; 361. Baffle; 3611. First component 3612, Second component; 36121, Through hole; 362, First spring component; 363, Traction rod; 364, Fixing rod; 37, Second spring component; 38, Fixing block; 39, Second locking nut; 4, Anchor hole grouting body; 5, Bag grouting body; 6, Reinforcing assembly; 61, Circular stirrup; 611, First long shaft end; 612, Second long shaft end; 62, Fixed connecting rope; 621, Fixed steel strand; 622, Fixed spring section; 63, First traction rope; 631, First traction steel strand; 632, First traction spring section; 64, Second traction rope; 641, Second traction steel strand; 642, Second traction spring section; 7, Guide head. Detailed Implementation

[0047] The following is in conjunction with the appendix Figure 1 -12 provides further details regarding this application. Example 1

[0048] Reference Figure 1 In existing technology, a bladder-type expanded anchor bolt includes an anchor bar 2 and an expansion compression cylinder 3. The anchor bar 2 passes through the expansion compression cylinder 3 and is fixedly connected to it. Workers cut an anchor hole 1 in the soil layer, vertically downwards. The anchor hole 1 includes a narrow anchor hole 11 and an expanded-bottom anchor hole 12, with the expansion compression cylinder 3 placed in the expanded-bottom anchor hole 12. An anchor hole grouting body 4 is provided in the anchor hole 1, enclosing the anchor bar 2 and the expansion compression cylinder 3; a bladder-type grouting body 5 is provided inside the expansion compression cylinder 3. Bladder-type expanded anchor bolts are widely used in existing technology, and this application does not describe the specific structure of the bladder-type expanded anchor bolt in detail. In existing technology, the bladder-type grouting body 5 inside the expansion compression cylinder 3 is made of self-compacting concrete.

[0049] However, the fluidity and slump retention of self-compacting concrete are highly sensitive to material ratios, ambient temperature, and transportation time. This leads to risks such as reduced self-compacting properties and difficulty in fully filling the internal space of the expansion compression cylinder 3. Consequently, the self-compacting concrete inside the bladder may be partially incompletely filled, resulting in lower structural strength of the grouting body 5. This weakens the tensile and shear bearing capacity of the bladder-type expanded anchor and affects its pull-out resistance. Therefore, the proposed embodiment further improves upon the existing bladder-type expanded anchor.

[0050] This application discloses an anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt. (Refer to...) Figure 2 The anti-buoyancy anchoring structure is set in the anchor hole 1 in the soil layer, in the vertical downward direction. The anchor hole 1 includes a narrow anchor hole 11 and an enlarged bottom anchor hole 12.

[0051] Reference Figure 1 The anti-buoyancy anchoring structure based on the bladder-type expanded anchor bolt includes an anchor bar 2, an expansion compression cylinder 3, an anchor hole grouting body 4, and a bladder-type grouting body 5. In this embodiment, the anchor bar 2 is a finely rolled threaded steel bar that has undergone anti-corrosion treatment.

[0052] Reference Figures 3 to 6 The expansion extrusion cylinder 3 is installed in the expanded bottom anchor hole 12. The expansion extrusion cylinder 3 includes an upper sleeve assembly 31, a lower sleeve assembly 32, an isolation support tube 33, a folded expansion bladder 34, a locking assembly 35, and a vibrating assembly 36.

[0053] Reference Figure 4 The isolation support pipe 33 is located between the upper sleeve assembly 31 and the lower sleeve assembly 32. The anchor bar 2 passes through the isolation support pipe 33. The locking assembly 35 is fixedly connected to the end of the anchor rod. The isolation support pipe 33 has several connecting holes 331 for grouting liquid to pass through in a ring.

[0054] Reference Figure 3 A foldable expansion bag 34 is disposed on the outer periphery of the isolation support tube and is fixed between the upper sleeve assembly 31 and the lower sleeve assembly 32. The foldable expansion bag 34 is a flexible cloth bag. After the foldable expansion bag 34 is folded and stored, tape is also wrapped around the foldable expansion bag 34 to make the expansion extrusion cylinder 3 a cylindrical structure with a small diameter, so that the expansion extrusion cylinder 3 can be inserted into the fine anchor hole 11.

[0055] Reference Figure 4The upper sleeve assembly 31 is provided with a first inner grouting pipe 311, a second inner grouting pipe 312, and an exhaust valve 315. The first inner grouting pipe 311 and the second inner grouting pipe 312 are connected to the outer grouting pipe 316 through a union joint 313. Both the first inner grouting pipe 311 and the second inner grouting pipe 312 are provided with one-way grouting valves 314. The first inner grouting pipe delivers grouting fluid into the isolation support pipe 33, and the second inner grouting pipe 312 delivers grouting fluid into the folded expansion bladder 34. The grouting fluid hardens into the bladder grouting body 5 in the folded expansion bladder 34, and hardens into the anchor hole grouting body 4 in the anchor hole 1. In the prior art, the upper sleeve assembly 31 of the expansion extrusion cylinder 3 has been widely used, and the upper sleeve assembly 31 is not the inventive point of this application. Therefore, this embodiment will not describe the upper sleeve assembly 31 in more detail.

[0056] Reference Figure 5 In this embodiment, a second locking nut 39 is provided on the side of the upper sleeve assembly 31 away from the lower sleeve assembly 32. The second locking nut 39 is threadedly connected and fixed to the anchor bar 2. The worker first fixes the second locking nut 39 to the anchor bar 2, and then puts the expansion compression cylinder 3 on the anchor bar 2.

[0057] Reference Figure 6 The locking assembly 35 is located on the side of the lower sleeve assembly 32 away from the upper sleeve assembly 31. The locking assembly 35 includes a first locking nut 351, a fixing bolt 352, a fixing nut 354, and a washer 353. The first locking nut 351 is threadedly connected and fixed to the anchor bar 2. The washer 353 is located on the side of the first locking nut 351 away from the lower sleeve assembly 32, and the washer 353 is sleeved on the fixing bolt 352. The position of the washer 353 is fixed by the cooperation of the fixing nut 354 and the fixing bolt 352. At the same time, the expansion extrusion cylinder 3 also includes a guide head 7, which covers the end of the anchor bar 2 and the locking assembly 35, and is fixedly connected to the lower sleeve assembly 32. In the prior art, the locking assembly 35 and the lower sleeve assembly 32 have been widely used, and the locking assembly 35 and the lower sleeve assembly 32 are not the inventive point of this application. This embodiment will not provide further details about the locking assembly 35 and the lower sleeve assembly 32.

[0058] Reference Figure 6 and Figure 7 The vibrating assembly 36 is hinged to the isolation support pipe 33. The outer diameter of the vibrating assembly 36 when unfolded is larger than the radius of the fine anchor hole 11. The anchor rod moves to drive the vibrating assembly 36 to vibrate. The vibrating assembly 36 is used to vibrate the grout in the folded expansion bag 34 to improve the compactness and structural strength of the bag grout body 5.

[0059] Reference Figure 6 and Figure 7In this embodiment, the vibrating assembly 36 includes a baffle 361, a first spring member 362, and a traction rod 363. The baffle 361 includes a first component 3611 and a second component 3612, which are integrally formed and have an included angle. The upper end of the second component 3612 of the baffle 361 is hinged to the isolation support tube 33 and is used to cover the connecting hole 331. The first spring member 362 includes a fixed end and a free end that are arranged opposite to each other. The first spring member 362 is vertically arranged, and the fixed end of the first spring member 362 is fixedly connected to the first component 3611 at the upper end of the baffle 361. The free end of the first spring member 362 cantilevered outside the first component 3611 of the baffle 361, and a clearance gap is provided between the first spring member 362 and the second component 3612. The second component 3612 of the baffle 361 has a through hole 36121 for the traction rod 363 to pass through. The first end of the traction rod 363 is located inside the isolation support tube 33, and the second end of the traction rod 363 is connected to the free end of the first spring member 362.

[0060] Reference Figure 8 and Figure 9 An anchor bar 2 is provided with a driving component on its outer periphery. In this embodiment, the driving component includes several push plates 21, which are circumferentially spaced on the outer periphery of the anchor bar 2. The upper sleeve assembly 31 is provided with a clearance groove to avoid the push plates 21. The end of the traction rod 363 is located between adjacent push plates 21. When the anchor bar 2 rotates, the push plates 21 force the free end of the first spring member 362 of the traction rod 363 to move, so that the first spring member 362 vibrates the grouting liquid in the folded expansion bag 34. The baffle 361 is provided on the first component 3611 and the second component 3612, which facilitates the contact between the first spring member 362 and the grouting liquid, thereby improving the vibration effect of the first spring member 362 on the grouting liquid.

[0061] Reference Figure 8 and Figure 9 In addition, the vibratory assembly 36 also includes a fixed rod 364, which is fixed to the side of the baffle 361 away from the isolation support pipe 33. The fixed rod 364 is hinged to the traction rod 363. The distance from the fixed rod 364 to the second end of the traction rod 363 is greater than the distance from the fixed rod 364 to the first end of the traction rod 363. The traction rod 363 rotates around the fixed rod 364. In this embodiment, utilizing the "lever principle," when the driving member drives the first end of the traction rod 363 to move, the distance from the fixed rod 364 to the second end of the traction rod 363 is greater than the distance from the first end of the fixed rod 364, thus amplifying the movement of the second end of the traction rod 363 and the free end of the first spring member 362, thereby improving the vibration effect of the first spring member 362 on the grouting fluid.

[0062] Reference Figure 6and Figure 7 The vibratory assembly 36 also includes a second spring 37. One end of the second spring 37 is connected to the lower end of the baffle 361, and the other end is connected to the isolation support tube 33. The second spring 37 forces the baffle 361 away from the isolation support tube 33. By setting the second spring 37 between the baffle 361 and the isolation support tube 33, when the folded expansion bag 34 is folded, the folded expansion bag 34 presses the baffle 361 inward, causing the baffle 361 to approach the isolation support tube 33, and the baffle 361 forces the second spring 37 to compress and deform. When grout is injected into the folded expansion bag 34, the grout forces the tape on the outer periphery of the folded expansion bag 34 to break; thus, when the folded expansion bag 34 expands outward, the second spring 37 forces the baffle 361 to expand outward, thereby improving the stability of the expansion extrusion cylinder 3 during operation.

[0063] Reference Figure 6 and Figure 7 The expansion extrusion cylinder 3 also includes a fixing block 38, which is fixed to the outer periphery of the isolation support tube 33. The fixing block 38 is used to magnetically fix the second component 3612. The fixing block is magnetically fixed to the second component 3612 of the baffle 361 to fix the position of the baffle 361; thereby facilitating the traction rod 363 to pull the first spring component 362, so as to improve the vibration effect of the first spring component 362 on the grouting liquid.

[0064] The implementation principle of an anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt in this application embodiment is as follows:

[0065] Reference Figure 2 and Figure 3 Therefore, when the fluidity and self-compacting properties of the grout (self-compacting concrete grout) decrease due to factors such as material ratio, ambient temperature, and transportation time, workers can simultaneously inject the grout into the vibratory folded expansion bag 34 while using ground-based engineering equipment to drive the anchor bar 2 to rotate. This causes the push plate 21 on the anchor rod to periodically actuate the traction rod 363, using the traction rod 363 to pull the end of the first spring member 362, and using the reciprocating deformation of the first spring member 362 itself to vibrate the grout.

[0066] That is, the anchor bar 2 is used to drive the vibrating component 36 to vibrate, so that the vibrating component 36 vibrates the grouting liquid inside the folded expansion bag 34, thereby improving the density and structural strength of the bag grouting body 5, and thus improving the pull-out resistance of the anti-buoyancy anchoring structure.

[0067] Reference Figure 8 and Figure 9By setting a fixed rod 364 between the traction rod 363 and the baffle 361, the position of the free end of the first spring member 362 is amplified by utilizing the "lever principle". That is, when the driving member drives the first end of the traction rod 363 to move, since the distance from the fixed rod 364 to the second end of the traction rod 363 is greater than the distance from the first end of the fixed rod 364, the movement of the second end of the traction rod 363 and the free end of the first spring member 362 is amplified, thereby improving the vibration effect of the first spring member 362 on the grouting fluid.

[0068] Compared to existing technologies, the anchor bar 2 is fixedly connected to the expansion extrusion cylinder 3 through the locking component 35 at the end; in this embodiment, the anchor bar 2 in the folded expansion bladder 34 is engaged with the grouting body 5 of the bladder through the connecting hole 331, thereby improving the connection strength between the anchor rod and the expansion extrusion cylinder 3, so as to further improve the tensile strength and bearing capacity of the anchor rod and improve the pull-out resistance of the anchor rod. Example 2

[0069] The difference between Example 2 and Example 1 is as follows:

[0070] Reference Figure 10 and Figure 11 The anti-buoyancy anchoring structure also includes a reinforcing component 6, which is disposed inside the folded expansion bladder 34. The reinforcing component 6 includes annular stirrups 61, a fixed connecting rope 62, a first traction rope 63, and a second traction rope 64.

[0071] Reference Figure 10 and Figure 11 The annular stirrup 61 is sleeved on the outer periphery of the isolation support pipe 33. The annular stirrup 61 has a major axis and a minor axis. The minor axis of the annular stirrup 61 is smaller than the diameter of the fine anchor hole 11, and the major axis of the annular stirrup 61 is larger than the diameter of the fine anchor hole 11. The fixing connecting rope 62 is used to connect the annular stirrup 61 and the isolation support pipe 33.

[0072] Reference Figure 10 and Figure 11 The annular stirrup 61 includes a first long axis end 611 and a second long axis end 612 arranged opposite to each other. When the expansion extrusion cylinder 3 passes through the narrow anchor hole 11, the elevation of the first long axis end 611 is greater than the elevation of the second long axis end 612; that is, when the expansion extrusion cylinder 3 passes through the narrow anchor hole 11, the annular stirrup 61 is inclinedly arranged on the outer periphery of the isolation support pipe 33. When the folded expansion bag 34 is injected with grout, after the folded expansion bag 34 expands outward, the folded expansion bag 34 pulls the annular stirrup 61 through the first traction rope 63, causing the annular stirrup 61 to rotate in the horizontal direction. The fixed connecting rope 62 is used to pull the annular stirrup 61 so that the long axis of the vertical projection of the annular stirrup 61 is greater than the diameter of the narrow anchor hole 11. In this embodiment, the fixed connecting rope 62 includes a fixed steel strand 621 and a fixed spring section 622, with the fixed spring section 622 disposed between the fixed steel strands 621.

[0073] Reference Figure 10 and Figure 11 The first traction rope 63 includes a first traction steel strand 631 and a first traction spring section 632 connected together. The first traction spring section 632 is located in the middle of the first traction rope 63. One end of the first traction rope 63 is fixedly connected to the first long shaft end 611 of the annular stirrup 61, and the other end of the first traction rope 63 is fixedly connected to the folded expansion bag 34.

[0074] Reference Figure 10 and Figure 11 The second traction rope 64 includes a second traction steel strand 641 and a second traction spring section 642 connected together. The second traction spring section 642 is located in the middle of the second traction rope 64. A guide ring 332 is provided on the outer periphery of the isolation support tube 33. The second traction rope 64 passes through the guide ring 332. One end of the second traction rope 64 is fixedly connected to the second end of the traction rod 363, and the other end of the second traction rope 64 is fixedly connected to the second long shaft end 612 of the annular stirrup 61. When the second end of the traction rod 363 pulls the second traction rope 64 to move, the first traction rope 63 and the second traction rope 64 force the annular stirrup 61 to vibrate, and the annular stirrup 61 vibrates to compact the grout.

[0075] The implementation principle of an anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt in this application embodiment is as follows:

[0076] Reference Figure 10 and Figure 11 By installing reinforcing components 6 inside the folded expansion bag 34, grout is injected into the folded expansion bag 34, causing it to expand and open. Annular stirrups 61 are horizontally positioned within the folded expansion bag 34. Thus, when the grout solidifies and hardens into the bag grout body 5, the annular stirrups 61 provide lateral restraint to the bag grout body 5, thereby improving its compressive strength and shear resistance.

[0077] In this embodiment, when the grouting fluid inside the folded expansion bag 34 squeezes the folded expansion bag 34 outward, and the folded expansion bag 34 pulls the annular hoop 61 to a horizontal position through the first traction rope 63, the first traction spring segment 632 of the first traction rope 63, the second traction spring segment 642 of the second traction rope 64, and the fixed spring segment 622 of the second traction rope 64 are all in a stretched state; thereby making the first traction rope 63, the second traction rope 64, and the second traction rope 64 in a taut state.

[0078] Reference Figure 10 and Figure 11Therefore, when the end of the traction rod 363 moves, in addition to pulling the first spring member 362 to vibrate the grout, the traction rod 363 also pulls the first traction rope 63. Since the first traction rope 63 has a first traction spring section 632 in the middle and the second traction rope 64 has a second traction spring section 642 in the middle, the first traction rope 63 and the second traction rope 64 have a certain elasticity. Therefore, when the traction rod 363 pulls the first traction rope 63, under the combined action of the first traction rope 63 and the second traction rope 64, the annular stirrup 61 will vibrate. This allows the annular stirrup 61 to vibrate the grout inside the folded expansion bag 34. Moreover, the vibration area of ​​the annular stirrup 61 for the grout is different from the vibration area of ​​the vibration component 36, thereby further improving the density and structural strength of the bag grout 5 and improving the pull-out resistance of the anti-buoyancy anchor structure. Example 3

[0079] The difference between Example 3 and Example 2 is as follows:

[0080] Reference Figure 12 Along the length of the anchor bar 2, multiple reinforcing assemblies 6 are spaced apart, and the major axes of the several annular stirrups 61 are at an angle to each other. In this embodiment, two reinforcing assemblies 6 are provided, and the two reinforcing assemblies 6 are arranged perpendicularly.

[0081] The implementation principle of an anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt in this application embodiment is as follows:

[0082] Reference Figure 12 Along the length of the anchor bar 2, the long axes of the two annular stirrups 61 are set perpendicular to each other; so that the several annular stirrups 61 have a good lateral restraint effect on the grouting body 5 in multiple directions, thereby further improving the structural strength of the grouting body 5.

[0083] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A buoyancy-resistant anchoring structure based on a bladder-type expanded anchor bolt, wherein the buoyancy-resistant anchoring structure is disposed in an anchor hole (1) in the soil layer, in a vertically downward direction, wherein the anchor hole (1) includes a narrow anchor hole (11) and an expanded-bottom anchor hole (12); characterized in that: The anti-buoyancy anchoring structure includes an anchor bar (2), an expansion extrusion cylinder (3), an anchor hole grouting body (4), and a bladder grouting body (5); the expansion extrusion cylinder (3) is disposed in the expanded bottom anchor hole (12), and the expansion extrusion cylinder (3) includes an upper sleeve assembly (31), a lower sleeve assembly (32), an isolation support pipe (33), a folded expansion bladder (34), a locking assembly (35), and a vibrating assembly (36); the isolation support pipe (33) is disposed between the upper sleeve assembly (31) and the lower sleeve assembly (32), the anchor bar (2) passes through the isolation support pipe (33), the locking assembly (35) is fixedly connected to the end of the anchor rod, and the isolation support pipe (33) has several connecting holes (331) for grout to pass through in a ring; the folded expansion bladder (34) is disposed on the outer periphery of the isolation support pipe (33), and the folded expansion bladder ( 34) Fixed between the upper sleeve assembly (31) and the lower sleeve assembly (32); the upper sleeve assembly (31) is provided with a first inner grouting pipe (311) and a second inner grouting pipe (312). The first inner grouting pipe (311) delivers grouting liquid into the isolation support pipe (33), and the second inner grouting pipe (312) delivers grouting liquid into the folded expansion bladder (34). The grouting liquid hardens into a bladder grouting body (5) in the folded expansion bladder (34), and the grouting liquid hardens into an anchor hole grouting body (4) in the anchor hole (1). The vibrating assembly (36) is hinged to the isolation support pipe (33). The outer diameter of the vibrating assembly (36) is larger than the radius of the fine anchor hole (11). The anchor rod moves to drive the vibrating assembly (36) to vibrate. The vibrating assembly (36) is used to vibrate the grouting liquid in the folded expansion bladder (34).

2. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 1, characterized in that: The vibratory assembly (36) includes a baffle (361), a first spring (362), and a traction rod (363). The upper end of the baffle (361) is hinged to the isolation support tube (33), and the baffle (361) is used to cover the connecting hole (331). The first spring (362) includes a fixed end and a free end arranged opposite to each other. The fixed end of the first spring (362) is fixedly connected to the upper end of the baffle (361). The baffle (361) has a through hole (36121) for the traction rod (363) to pass through. The first end of the traction rod (363) is located inside the isolation support tube (33), and the second end of the traction rod (363) is connected to the free end of the first spring (362). The anchor bar (2) is provided with a driving member on its outer periphery. The driving member forces the traction rod (363) to pull the first spring (362), so that the first spring (362) vibrates the grout.

3. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 2, characterized in that: The driving component includes a plurality of push plates (21), which are arranged in a ring at intervals around the outer periphery of the anchor bar (2). The upper sleeve assembly (31) is provided with a relief groove to avoid the push plates (21). The first end of the traction rod (363) is disposed between adjacent push plates (21). When the anchor bar (2) rotates, the push plates (21) force the traction rod (363) to move, and the traction rod (363) forces the free end of the first spring member (362) to move, so that the first spring member (362) vibrates the grout.

4. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 3, characterized in that: The vibrating assembly (36) further includes a fixing rod (364), which is fixed to the side of the baffle (361) away from the isolation support pipe (33). The fixing rod (364) is hinged to the traction rod (363). The distance from the fixing rod (364) to the second end of the traction rod (363) is greater than the distance from the fixing rod (364) to the first end of the traction rod (363). The traction rod (363) rotates around the fixing rod (364).

5. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 2, characterized in that: The baffle (361) includes a first component (3611) and a second component (3612). The first component (3611) and the second component (3612) are integrally formed. An included angle is provided between the first component (3611) and the second component (3612). The fixed end of the first spring (362) is provided on the first component (3611). The second component (3612) is used to cover the connecting hole (331). The second component (3612) has a through hole (36121) for the traction rod (363) to pass through. A clearance gap is provided between the first spring (362) and the second component (3612).

6. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 3, characterized in that: It also includes a reinforcing assembly (6), which is disposed inside the folded expansion bladder (34); the reinforcing assembly (6) includes annular stirrups (61) and fixing connecting ropes (62), the annular stirrups (61) are sleeved on the outer periphery of the isolation support tube (33), the annular stirrups (61) have a major axis and a minor axis, the minor axis of the annular stirrups (61) is smaller than the diameter of the fine anchor hole (11), and the major axis of the annular stirrups (61) is larger than the diameter of the fine anchor hole (11), the fixing connecting ropes (62) 62) Used to connect the annular stirrup (61) and the isolation support tube (33); when the expansion extrusion cylinder (3) passes through the fine anchor hole (11), the annular stirrup (61) is inclinedly arranged on the outer periphery of the isolation support tube (33); when the expansion extrusion cylinder (3) expands outward, the annular stirrup (61) rotates in the horizontal direction, and the fixed connecting rope (62) is used to pull the annular stirrup (61) so that the long axis of the vertical projection of the annular stirrup (61) is greater than the diameter of the fine anchor hole (11).

7. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 6, characterized in that: The annular stirrup (61) includes a first long shaft end (611) and a second long shaft end (612) arranged opposite to each other. When the expansion extrusion cylinder (3) passes through the narrow anchor hole (11), the elevation of the first long shaft end (611) is greater than the elevation of the second long shaft end (612). The reinforcing assembly (6) includes a first traction rope (63) and a second traction rope (64). The first traction rope (63) has a first traction spring section (632) in the middle. One end of the first traction rope (63) is fixedly connected to the first long shaft end (611) of the annular stirrup (61), and the other end of the first traction rope (63) is fixedly connected to the folded expansion bladder (34). The second traction... The rope (64) has a second traction spring section (642) in the middle. The isolation support tube (33) is provided with a guide ring (332) on its outer periphery. The second traction rope (64) passes through the guide ring (332). One end of the second traction rope (64) is fixedly connected to the second end of the traction rod (363). The other end of the second traction rope (64) is fixedly connected to the second long shaft end (612) of the annular stirrup (61). When the second end of the traction rod (363) pulls the second traction rope (64) to move, the first traction rope (63) and the second traction rope (64) force the annular stirrup (61) to vibrate. The annular stirrup (61) vibrates to tamp the grout.

8. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 6, characterized in that: Along the length of the anchor bar (2), the reinforcement assembly (6) is provided with multiple, and the long axes of the several annular stirrups (61) have included angles.

9. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 2, characterized in that: The vibrating assembly (36) further includes a second spring (37), one end of which is connected to the lower end of the baffle (361), and the other end of which is connected to the isolation support tube (33). The second spring (37) forces the baffle (361) away from the isolation support tube (33).

10. The anti-buoyancy anchoring structure based on a bladder-type expanded anchor bolt according to claim 5, characterized in that: The expansion extrusion cylinder (3) also includes a fixing block (38), which is fixed to the outer periphery of the isolation support tube (33) and is used to magnetically fix it to the second component (3612).

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