Post-pouring anti-floating anchor rod

Abstract

The post-cast anti-floating anchor rod comprises a plurality of steel bars used for being inserted into external anchor holes and a plurality of first connecting pieces used for positioning the steel bars in the anchor holes, second connecting pieces are arranged at the ends, facing the bottom positions of the external anchor holes, of the steel bars, one ends of the second connecting pieces are connected with the steel bars, and the other ends of the second connecting pieces are connected with the anchor holes. One end of each first connecting piece is inserted into the anchor hole, the other end of each first connecting piece is inserted into the center of the bottom of an external anchor hole, each first connecting piece comprises a plurality of positioning blocks, the positioning blocks are combined to form the first connecting pieces, the first connecting pieces are arranged on the steel bars in a sleeving mode, and the outer peripheral walls of the first connecting pieces abut against the inner peripheral walls of the anchor holes; the anti-floating anchor rod has the advantages that the anti-floating anchor rod can be suitable for anti-floating anchor rods formed by different quantities of steel bars, the anti-floating anchor rod is convenient to mount, the positioning effect of the anchor rod in the anchor hole is good, the anti-floating capability is high, and the structure is simple.

Description

Technical Field

[0001] The invention relates to the technical field of anti-floating anchor rods, in particular to a post-cast anti-floating anchor rod. Background Art

[0002] With the continuous development of urban construction, the development and utilization of underground space are becoming more and more extensive. The anti-floating problem of underground structures such as basements and underground parking lots has become more and more critical. Traditional anti-floating measures have certain limitations, and post-cast anti-floating anchor rods have come into being; it is an anti-floating means installed after the construction of the main structure is completed. After the construction of this main structure is completed, anchor holes for installing anti-floating anchor rods are generally preset inside it. The existing post-cast anti-floating anchor rods generally use three steel bars and positioning parts for positioning the steel bars. This positioning part can be a casing or steel belt with a notch. For example, a Chinese invention patent for a post-cast anti-floating anchor rod (application number: 202211156138.1) includes: a casing, anchor steel bars, a rear grouting pipe, a front grouting pipe and a casting body, the casing The pipe is arranged at the top of the anchor hole in the soil layer and is pre-buried in the waterproof cushion layer and the foundation structure layer. The inner wall of the casing is provided with a stiffening ring plate. The inner side of the stiffening ring plate is provided with three notches for accommodating anchor steel bars, and each notch is distributed at an equal angle on the inner side of the stiffening ring plate; the rear grouting pipe, the front grouting pipe and the three anchor steel bars are arranged in the anchor hole, and each anchor steel bar is connected to the rear grouting pipe by a plurality of hinges. When the anchor steel bars and the rear grouting pipe are fed into the anchor hole, each anchor steel bar is arranged close to the rear grouting pipe. When the anchor steel bars and the rear grouting pipe touch the bottom of the anchor hole, each hinge is unfolded and supports the three anchor steel bars away from the rear grouting pipe, and the tails of the three anchor steel bars are respectively stuck in the three notches, and the connection between the anchor steel bars and the stiffening ring plate is completed by nuts.

[0003] The post-cast anti-floating anchor rod of the above-mentioned invention patent is complicated to install and is only applicable to anti-floating anchor rods with 3 anchor steel bars. Due to the long length of the anchor steel bars, the casing in the above-mentioned invention patent is installed at the top of the anchor hole in the soil layer, and the middle of the anchor steel bar cannot be positioned, and the anchor steel bar cannot be kept in the middle of the anchor hole. The spacing between the anchor steel bar and the inner wall of the anchor hole is prone to deviation. After casting, the anti-floating anchor rod has low strength, poor stability, and poor anti-floating effect. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a post-cast anti-floating anchor rod to solve the problems proposed in the above background technology that the anchor rod is difficult to position in the anchor hole, and the anti-floating anchor rod has low strength, poor stability and poor rehabilitation effect after installation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a post-cast anti-floating anchor rod, comprising a plurality of steel bars for inserting into external anchor holes and a plurality of first connecting pieces for positioning the steel bars in the anchor holes, a second connecting piece is provided at one end of the steel bar facing the bottom position of the external anchor hole, one end of the second connecting piece is connected to the steel bar, and the other end is inserted into the center position of the bottom of the external anchor hole, each of the first connecting pieces comprises a plurality of positioning blocks, a plurality of the positioning blocks are combined to form a first connecting piece, the first connecting piece is sleeved on the steel bar, the outer peripheral wall of the first connecting piece is abutted against the inner peripheral wall of the anchor hole, and the plurality of the positioning blocks are abutted against each other in the axial direction of the first connecting piece, and the first connecting piece cooperates with the second connecting piece to position the steel bar in the anchor hole.

[0006] As a further improvement of the present invention, the second connecting member includes a connecting bar and an inserted bar corresponding to each steel bar, each of the connecting bars is fixedly connected to a steel bar, several of the connecting bars extend from the direction of the steel bars toward the bottom of the anchor hole and intersect at the axial position of the anchor hole, one end of the inserted bar is fixedly connected to the intersection position of several connecting bars, and the other end is inserted corresponding to the axial position of the bottom of the anchor hole.

[0007] As a further improvement of the present invention, one end of the connecting bar is welded to the steel bar, and the other end is welded to the inserted bar.

[0008] As a further improvement of the present invention, the end of the second connecting piece inserted into the external anchor hole is equidistantly arranged to the end of each steel bar connected to the second connecting piece, and a bottom cavity is formed between the end of the steel bar connected to the second connecting piece and the bottom of the external anchor hole.

[0009] As a further improvement of the present invention, the end of the second connecting piece inserted into the external anchor hole is equidistantly arranged to the end of each steel bar connected to the second connecting piece, and a bottom cavity is formed between the end of the steel bar connected to the second connecting piece and the bottom of the external anchor hole.

[0010] As a further improvement of the present invention, the side of each positioning block has two inner walls and an arc-shaped outer wall for abutting against adjacent positioning blocks, each positioning block is magnetic and can be adsorbed to each other, and two adjacent positioning blocks can be detachably connected.

[0011] As a further improvement of the present invention, the outer wall of each positioning block is provided with threads, and a plurality of positioning blocks are combined to form the first connecting member whose outer peripheral wall has threads.

[0012] As a further improvement of the present invention, at least one first pipe hole for passing a grouting pipe for the first grouting is provided on the positioning block.

[0013] As a further improvement of the present invention, each positioning block is provided with a notch at a position corresponding to the axis, and the notches on a number of positioning blocks are combined to form a second pipe hole for passing a high-pressure grouting pipe for a second grouting.

[0014] As a further improvement of the present invention, a positioning ring for fixing the positioning block on the steel bar is welded on the steel bar.

[0015] Compared with the prior art, the present invention provides a post-cast anti-floating anchor rod, which has the following beneficial effects: the present invention adopts a combination of a plurality of steel bars, a first connecting piece and a second connecting piece to form an anti-floating anchor rod, the first connecting piece is composed of a plurality of positioning blocks, the first connecting piece is used to be installed on the steel bars, different numbers of steel bars can adopt different numbers of fixing blocks, and a steel bar passes through a fixing block, the present invention can be applicable to anti-floating anchor rods with different numbers of steel bars, and the first connecting piece is arranged at different positions of the steel bars so that different positions on the steel bars can be supported, thereby increasing the strength of the steel bars, the outer peripheral wall of the first connecting piece is abutted against the inner peripheral wall of the anchor hole, and the plurality of positioning blocks are all abutted and matched with each other in the axial direction of the first connecting piece, this structure can make the position between the steel bar and the inner peripheral wall of the anchor hole consistent, thereby improving the anti-floating ability of the anti-floating anchor rod after the later casting, the second connecting piece can position the bottom of the plurality of steel bars with the center position of the bottom of the anchor hole, and the second connecting piece cooperates with the first connecting piece to position the plurality of steel bars at the center position of the anchor hole, and it is not easy to shake, and the stability is good after positioning, thereby improving the overall anti-floating ability of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention;

[0017] Figure 2 is a three-dimensional diagram of the first connecting member of the present invention;

[0018] Figure 3 is a three-dimensional diagram of the second connecting member of the present invention;

[0019] Figure 4 is a cross-sectional view of the present invention;

[0020] Figure 5 A top view of another embodiment of the present invention.

[0021] Reference numerals: 1, steel bar; 2, first connecting piece; 3, second connecting piece; 4, anchor hole; 5, bottom cavity; 6, positioning ring; 21, positioning block; 22, first pipe hole; 23, second pipe hole; 24, inner wall; 25, outer wall; 251, thread; 31, connecting bar; 32, inserted bar; DETAILED DESCRIPTION

[0022] The present invention will be further described below in detail with reference to the embodiments shown in the accompanying drawings.

[0023] As shown in the drawings, the present invention provides a post-cast anti-floating anchor rod, comprising a plurality of steel bars 1 for inserting into external anchor holes 4 and a plurality of first connecting members 2 for positioning the steel bars 1 in the anchor holes 4, a second connecting member 3 is provided at one end of the steel bars 1 facing the bottom position of the external anchor hole 4, one end of the second connecting member 3 is connected to the steel bars 1, and the other end is inserted into the center position of the bottom of the external anchor hole 4, each of the first connecting members 2 comprises a plurality of positioning blocks 21, a plurality of the positioning blocks 21 are combined to form a first connecting member 2, the first connecting member 2 is sleeved on the steel bars 1, the outer peripheral wall of the first connecting member 2 is abutted against the inner peripheral wall of the anchor hole 4, a plurality of the positioning blocks 21 are abutted against each other in the axial direction of the first connecting member 2, and the first connecting member 2 cooperates with the second connecting member 3 to position the steel bars 1 in the anchor hole 4.

[0024] By the above technical scheme, the first connecting piece 2 and the second connecting piece 3 are arranged to cooperate to position the steel bar 1 in the anchor hole 4. The technical scheme adopts a combination of several positioning blocks 21 to form the first connecting piece 2, and each positioning block 21 is set corresponding to one steel bar 1, that is, one positioning block 21 is set corresponding to one steel bar 1. When there are three steel bars 1, the first connecting piece 2 is divided into three positioning blocks 21, and they are respectively set on three steel bars 1. When there are four steel bars 1, the first connecting piece 2 is divided into four positioning blocks 21, and they are respectively set on four steel bars 1. By analogy, this scheme can be applicable to anchor rods composed of different numbers of steel bars 1. When implementing this scheme, those skilled in the art can first determine the number of steel bars 1 of the anchor rod, and then use the first connecting piece 2 that is equally divided as the number of steel bars 1 to set with the steel bars 1. At this time, the first connecting piece 2 formed by the combination of the positioning blocks 21 can leave a gap between each steel bar 1, which can facilitate the later pouring. The first connecting piece formed by the combination of multiple positioning blocks 21 in this scheme The outer peripheral wall of the connecting piece 2 can be abutted against the inner wall 24 of the anchor hole 4, so that the anchor rod can be positioned more stably in the anchor hole 4 and is not easy to shake. When inserting the anchor rod, the technical personnel in this field need to first place the second connecting piece 3 corresponding to the center position of the bottom of the anchor hole 4. At this time, since the outer peripheral wall of the first connecting piece 2 can contact the inner peripheral wall of the anchor hole 4, the second connecting piece 3 can be more easily inserted into the center position of the bottom of the anchor hole 4, and the positioning is more accurate. When the first connecting piece 2 contacts the inner wall 24 of the anchor hole 4, the technical personnel in this field can continue to insert the anchor rod into the anchor hole 4 by rotating or pressing until the second connecting piece 3 is plugged into and positioned with the bottom of the anchor hole 4. The number of first connecting pieces 2 in this solution is several, and the technical personnel in this field can increase or decrease the number of first connecting pieces 2 according to the actual length of the anchor rod, and the first connecting piece 2 is arranged at intervals on the anchor rod. The second connecting piece 3 in this solution is one, and is arranged at one end of the anchor rod facing the bottom of the anchor hole 4, for being plugged into and positioned with the bottom position of the anchor hole 4.

[0025] As an improved specific embodiment, the second connecting member 3 includes a connecting bar 31 and an inserted bar 32 arranged corresponding to each steel bar 1, each of the connecting bars 31 is fixedly connected to a steel bar 1, and several of the connecting bars 31 extend from the direction of the steel bar 1 toward the bottom of the anchor hole 4 and intersect at the axial position of the anchor hole 4. One end of the inserted bar 32 is fixedly connected to the intersection position of several connecting bars 31, and the other end is inserted corresponding to the axial position of the bottom of the anchor hole 4.

[0026] The above technical scheme provides connecting bars 31 and inserted bars 32, wherein the connecting bars 31 are used to connect the steel bar 1 with the inserted bars 32, and the inserted bars 32 are used to connect with the anchor holes 4. When the scheme is implemented, the technicians in this field first weld the connecting bars 31 with the steel bar 1. The number of connecting bars 31 is the same as that of the steel bar 1. One steel bar 1 is welded with one connecting bar 31. During welding, the end of the connecting bar 31 facing the bottom of the anchor hole 4 needs to be inclined toward the axial direction of the anchor hole 4. When several connecting bars 31 are fixed to the steel bar 1, one end of the connecting bar 31 can intersect with the axial position of the anchor hole 4. At this time, the technicians in this field fix the inserted bars 32 corresponding to the intersection position. The fixed structure can be a fixed structure such as welding and clamping. After the second connecting piece 3 is installed, the technicians in this field only need to insert the inserted bars 32 corresponding to the axial position of the bottom of the anchor hole 4, and then cooperate with the positioning of the first connecting piece 2 to make the anchor rod be in the center position of the anchor hole 4. The connection method is simple, the operation is convenient, and the positioning effect is good.

[0027] As an improved specific implementation, one end of the connecting bar 31 is welded to the steel bar 1 , and the other end is welded to the inserted bar 32 .

[0028] Through the above technical solution, welding is preferably used, and welding has higher connection strength, better stability, and simpler connection.

[0029] As an improved specific embodiment, the end of the second connecting member 3 inserted into the external anchor hole 4 is equidistantly arranged to the end of each steel bar 1 connected to the second connecting member 3, and a bottom cavity 5 is formed between the end of the steel bar 1 connected to the second connecting member 3 and the bottom of the external anchor hole 4.

[0030] When implementing this solution, technical personnel in this field adopt the method of equidistantly arranging the end of the second connecting piece 3 that is inserted into the external anchor hole 4 to the end of each steel bar 1 that is connected to the second connecting piece 3, so that the position of the steel bar 1 is not easy to deviate after being connected to the second connecting piece 3, and the length of the steel bar 1 is not easy to be uneven, which is more convenient for welding. After the anchor rod is manufactured and formed, it is more in line with the standards and beautiful. The bottom of the anchor hole 4 in this solution has a bottom cavity 5. When technical personnel in this field cast the anchor hole 4, the bottom cavity 5 at the bottom can be injected with slurry, so that the bottom of the anchor hole 4 can be injected with slurry to improve the strength of the anchor hole 4 and the anti-floating ability of the anchor rod. In addition, the connecting bar 31 and the inserted bar 32 in this solution are welded together to increase the connection strength between the anchor hole 4 and the anchor rod through grouting, so that the overall strength is improved.

[0031] As an improved specific embodiment, the end of the second connecting member 3 inserted into the external anchor hole 4 is equidistantly arranged to the end of each steel bar 1 connected to the second connecting member 3, and a bottom cavity 5 is formed between the end of the steel bar 1 connected to the second connecting member 3 and the bottom of the external anchor hole 4.

[0032] When implementing this solution, technical personnel in this field adopt the method of equidistantly arranging the end of the second connecting piece 3 that is inserted into the external anchor hole 4 to the end of each steel bar 1 that is connected to the second connecting piece 3, so that the position of the steel bar 1 is not easy to deviate after being connected to the second connecting piece 3, and the length of the steel bar 1 is not easy to be uneven, which is more convenient for welding. After the anchor rod is manufactured and formed, it is more in line with the standards and beautiful. The bottom of the anchor hole 4 in this solution has a bottom cavity 5. When technical personnel in this field cast the anchor hole 4, the bottom cavity 5 at the bottom can be injected with slurry, so that the bottom of the anchor hole 4 can be poured with slurry to improve the strength of the anchor hole 4 and the anti-floating ability of the anchor rod.

[0033] As an improved specific embodiment, the side of each positioning block 21 has two inner walls 24 and an arc-shaped outer wall 25 for abutting against adjacent positioning blocks 21. Each positioning block 21 is a magnetic positioning block 21 that can be adsorbed to each other, and two adjacent positioning blocks 21 can be detachably connected.

[0034] When the present scheme is implemented, the positioning block 21 is provided with an arc-shaped outer wall 25. After several positioning blocks 21 are combined, the first connecting member 2 is cylindrical, and the arc-shaped outer wall 25 can be against the inner wall 24 of the anchor hole 4. The inner wall 24 is provided, and each positioning block 21 is magnetic. When two positioning blocks 21 are close to each other, the two inner walls 24 can attract each other, making it easier to combine and form several positioning blocks 21. The magnetic positioning block 21 does not need to be operated by construction personnel in the anchor hole 4, and does not consume manpower. The magnetic positioning block 21 in the present scheme needs to be installed before the anchor rod enters the anchor hole 4 and then placed in the anchor hole 4. If the anchor rod needs to be adjusted later, the anchor rod can also be adjusted by removing the positioning block 21. The number of positioning blocks 21 can be changed, but its adsorption capacity will not change.

[0035] As an improved specific implementation, the outer wall 25 of each positioning block 21 is provided with a thread 251 , and a plurality of positioning blocks 21 are combined to form the first connecting member 2 whose outer peripheral wall has a thread 251 .

[0036] When the present solution is implemented, a thread 251 is set on the outer wall of the re-positioning block 21. When several positioning blocks 21 are combined to form a complete first connecting member 2, the outer wall of the first connecting member 2 will also have a complete thread 251. At this time, when the technicians in this field install the positioning block 21 and insert the anchor rod into the anchor hole 4, they can insert it into the anchor hole 4 by rotating it. The thread 251 can draw a thread 251 mark that matches the inner wall 24 of the anchor hole 4. The anchor rod in the anchor hole 4 with the thread 251 is not easy to fall out of the anchor hole 4, and the connection strength is higher and the anti-floating ability is better.

[0037] As an improved specific implementation, the positioning block 21 is provided with at least one first pipe hole 22 for passing a grouting pipe for the first grouting.

[0038] When implementing the present scheme, at least one first pipe hole 22 for passing the grouting pipe is set on the positioning block 21. It is mentioned in the prior art that a front grouting pipe and a rear grouting pipe are generally used when grouting in the anchor hole 4. The front grouting pipe is grouted first, and the rear grouting pipe fills the ungrouted gap generated by the front grouting pipe during grouting by high-pressure grouting after the former is completed, so as to improve the overall connection strength.

[0039] As an improved specific implementation, each positioning block 21 is provided with a notch at a position corresponding to the axis, and the notches on a number of positioning blocks 21 are combined to form a second pipe hole 23 for passing a high-pressure grouting pipe for the second grouting.

[0040] When implementing this solution, a notch is opened at the axial position of the anchor hole 4 corresponding to the positioning block 21. The notches are combined to form a second pipe hole 23. This second pipe hole 23 is used to pass the high-pressure grouting pipe. The second pipe hole 23 formed by the combination of four fixing blocks has higher strength and is more suitable for high-pressure grouting pipe operations.

[0041] As an improved specific implementation, a positioning ring 6 for fixing the positioning block 21 on the steel bar 1 is welded on the steel bar 1 .

[0042] When the present solution is implemented, a positioning ring 6 is welded on the steel bar 1, and the positioning ring 6 is used to fix the positioning block 21 on the steel bar 1. When implemented, the technicians in this field first set a positioning ring 6 at the position on the steel bar 1 closest to the bottom of the anchor hole 4, and then install the positioning block 21 on the steel bar 1 in sequence to form a first connecting member 2, and then set a positioning ring 6 on the upper end of the first connecting member 2. The upper and lower fixed positioning blocks 21 are more stable, and the positioning blocks 21 are not easy to deviate from the work position. In the present solution, a positioning ring 6 is set at the upper and lower ends of each positioning block 21. In other embodiments, the technicians in this field can also set a thread 251 on the steel bar 1, set a thread 251 hole on the positioning block 21, and make the two cooperate, so that the positioning block 21 can rotate on the steel bar 1 with the thread 251 and reach the specified position. The present solution preferably adopts the method of setting a positioning ring 6.

[0043] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A post-cast anti-floating anchor, characterized in that: It includes a plurality of steel bars for inserting into external anchor holes and a plurality of first connecting pieces for positioning the steel bars in the anchor holes, a second connecting piece is provided at one end of the steel bars facing the bottom of the external anchor hole, one end of the second connecting piece is connected to the steel bars, and the other end is inserted into the center position of the bottom of the external anchor hole, each of the first connecting pieces includes a plurality of positioning blocks, and a plurality of the positioning blocks are combined to form a first connecting piece, the first connecting piece is sleeved on the steel bars, the outer peripheral wall of the first connecting piece is abutted against the inner peripheral wall of the anchor hole, and the plurality of positioning blocks are abutted against each other toward the axial direction of the first connecting piece, and the first connecting piece cooperates with the second connecting piece to position the steel bars in the anchor holes.

2. The post-cast anti-floating anchor rod according to claim 1, characterized in that: The second connecting member includes a connecting bar and an inserted bar corresponding to each steel bar, each of the connecting bars is fixedly connected to a steel bar, several of the connecting bars extend from the steel bar direction toward the bottom of the anchor hole and intersect at the axial position of the anchor hole, one end of the inserted bar is fixedly connected to the intersection position of several connecting bars, and the other end is inserted corresponding to the axial position of the bottom of the anchor hole.

3. The post-cast anti-floating anchor rod according to claim 2 is characterized in that: One end of the connecting bar is welded to the steel bar, and the other end is welded to the inserted bar.

4. The post-cast anti-floating anchor rod according to claim 1, 2 or 3, characterized in that: One end of the second connecting piece inserted into the external anchor hole is equidistantly arranged to one end of each steel bar connected to the second connecting piece, and a bottom cavity is formed between one end of the steel bar connected to the second connecting piece and the bottom of the external anchor hole.

5. The post-cast anti-floating anchor rod according to claim 1, characterized in that: One end of the second connecting piece inserted into the external anchor hole is equidistantly arranged to one end of each steel bar connected to the second connecting piece, and a bottom cavity is formed between one end of the steel bar connected to the second connecting piece and the bottom of the external anchor hole.

6. The post-cast anti-floating anchor rod according to claim 1, 2, 3 or 5, characterized in that: The side surface of each positioning block has two inner walls for abutting against the adjacent positioning blocks and an arc-shaped outer wall. Each positioning block is magnetic and can be adsorbed to each other. Two adjacent positioning blocks can be detachably connected.

7. The post-cast anti-floating anchor rod according to claim 6, characterized in that: The outer wall of each positioning block is provided with threads, and a plurality of positioning blocks are combined to form the first connecting member whose outer peripheral wall has threads.

8. The post-cast anti-floating anchor rod according to claim 1, 2, 3 or 5, characterized in that: The positioning block is provided with at least one first pipe hole for penetrating a grouting pipe used for the first grouting.

9. The post-cast anti-floating anchor rod according to claim 8, characterized in that: Each positioning block is provided with a notch at a position corresponding to the axis, and the notches on a plurality of positioning blocks are combined to form a second pipe hole for passing a high-pressure grouting pipe for the second grouting.

10. The post-cast anti-floating anchor rod according to claim 1, 2, 3 or 5, characterized in that: A positioning ring for fixing the positioning block on the steel bar is welded on the steel bar.

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