Angle adjustable support system for anchor rod tensioning

Abstract

The application provides an angle-adjustable support system for anchor rod tensioning, which comprises a fixing base, an angle adjusting part and a pressure bearing assembly, the fixing base is fixedly connected with a supporting structure, the angle adjusting part is hinged to a cross beam of the fixing base through a hinge shaft, an adjusting hole is formed in the cross beam, at least two positioning holes are formed in the angle adjusting part, the relative angle between the angle adjusting part and the cross beam is adjusted by allowing a positioning bolt to pass through different positioning holes, so that the anchor rod with different inclination angles can be adapted; the pressure bearing assembly is installed at the top of the angle adjusting part and is used for providing counterforce support for the tensioning of the anchor rod; the angle adjusting part and the pressure bearing assembly are both provided with an anchor rod channel through which the anchor rod passes. The angle adjusting part can rotate in a large angle range of 50-90 degrees, can be adjusted in a stepped manner according to the inclination angle of the anchor rod, improves the adaptability of the support system, effectively reduces the number of the support system, and can be mass-produced and the difficulty of equipment management is reduced.

Description

Technical Field

[0001] This invention relates to the fields of geotechnical engineering and building engineering, specifically to an angle-adjustable support system for anchor bolt tensioning. Background Technology

[0002] In deep foundation pit and high slope support engineering, the support method combining pile (or sheet pile) and prestressed anchor bolts is widely used due to its high reliability and wide applicability. During anchor bolt construction, the anchor bolts need to be tensioned to inflate them and improve their deformation resistance. Tensioning requires supports, with tensioning mechanisms such as through-hole jacks resting on these supports. Since the axial direction of the anchor bolts needs to be set according to requirements, and the inclination angle varies in different construction areas, corresponding supports are required for anchor bolts with different angles. This results in a large number of support models with varying support angles, leading to difficulties in equipment management and hindering mass production of the supports.

[0003] Therefore, it is necessary to reduce the number of stent models and provide stent compatibility in order to reduce the management difficulty of stents. Summary of the Invention

[0004] To address the issue of low adaptability of existing anchor tensioning supports, this application proposes an angle-adjustable support system for anchor tensioning, comprising:

[0005] The anchor, angle adjustment component, and pressure-bearing assembly are provided. The anchor is fixedly connected to the support structure. The anchor includes a crossbeam. The angle adjustment component is hinged to the crossbeam via a hinge shaft. An adjustment hole is provided on the crossbeam. At least two positioning holes are provided on the angle adjustment component. Positioning bolts can pass through the positioning holes and the adjustment holes to fix the relative position of the angle adjustment component and the crossbeam. The relative angle between the angle adjustment component and the crossbeam can be adjusted by passing the positioning bolts through different positioning holes to accommodate anchors with different inclination angles.

[0006] The pressure-bearing assembly is mounted on top of the angle adjustment member and is used to provide reaction force support for the tensioning of the anchor bolt; both the angle adjustment member and the pressure-bearing assembly have anchor bolt channels through which the anchor bolt passes.

[0007] The angle adjustment component in this application is hinged to the crossbeam of the fixed base. The angle adjustment component can rotate within a large angle range of 50-90°, allowing the angle adjuster to be adjusted in stages according to different tilt angles of the anchor rod, thereby improving the adaptability of the support system, effectively reducing the number of support system models, enabling mass production of the support system, and reducing the difficulty of equipment management.

[0008] Specifically, the angle adjusting component includes a downward-facing U-shaped member with two parallel, vertically extending upright plates. A crossbeam is slidably inserted into the cavity between the two upright plates. A pressure-bearing assembly is fixed to the top of the two upright plates, and positioning holes are formed on the upright plates. This design allows the angle adjusting component to have a hollow box-like structure, enabling it to straddle the crossbeam via the two upright plates, thus improving its stability on the crossbeam.

[0009] Furthermore, to ensure the stability between the angle adjustment component and the crossbeam and reduce the shear force on the positioning bolts, when the positioning bolts are tightened, the crossbeam and the vertical plate are pressed tightly together, and the contact surfaces of the crossbeam and the vertical plate form a friction-type high-strength bolt connection node with an anti-slip coefficient ≥0.45.

[0010] Furthermore, to reduce or eliminate the strength reduction caused by the opening, a reinforcing plate is welded to the outside of the upright plate. The reinforcing plate is located in the opening area of ​​the positioning hole, and the positioning hole penetrates the reinforcing plate.

[0011] Specifically, the pressure-bearing assembly includes a pressure-bearing member located at the top of the angle adjustment member and a pad located on the upper side of the pressure-bearing member. The pad is used to support the tensioner or anchor bolt lock. The pressure-bearing member mainly acts as a load-bearing beam to ensure that the tension generated by the anchor bolt is evenly distributed to the entire angle adjustment member, while the pad is used to ensure that the tensioner or anchor bolt lock is subjected to uniform force.

[0012] Specifically, for ease of construction, the crossbeam is made of H-beams with vertical flanges. One end of the crossbeam is fixedly connected to the support structure, and adjustment holes are opened on the flanges of the H-beams.

[0013] Furthermore, to improve the support strength of the fixing base, the fixing base also includes a steel bracket, one end of which is bolted to an H-beam, and the other end of which is fixed to the support structure. The steel bracket can be designed using existing technology, without any other special requirements.

[0014] Furthermore, to improve the support strength of the H-beam flange, a reinforcing rib is welded into the groove on the lower side of the H-beam, and the reinforcing rib is located at the connection between the steel bracket and the H-beam.

[0015] Furthermore, to facilitate the positioning of the pressure-bearing component, a limiting groove is provided on the top of the angle adjustment component, and the pressure-bearing component is installed in this limiting groove. For ease of operation, the pressure-bearing component usually needs to be movably placed on top of the angle adjustment component first, and then adjusted according to the specific position of the anchor rod. After setting the limiting groove, the pressure-bearing component can be effectively prevented from slipping off due to the tilt of the top of the angle adjustment component. Attached Figure Description

[0016] Figure 1This is the first state diagram of the angle-adjustable support system.

[0017] Figure 2 This is a schematic diagram of the angle adjustment component.

[0018] Figure 3 for Figure 2 The left view.

[0019] Figure 4 This is a schematic diagram of the fixed base.

[0020] Figure 5 This is a bottom view of the beam.

[0021] Figure 6 This is the second state diagram for the angle-adjustable support system.

[0022] Figure 7 This is the third state diagram for the angle-adjustable support system.

[0023] Figure 8 This is the fourth state diagram for the angle-adjustable support system. Detailed Implementation

[0024] The following describes the angle-adjustable support system for anchor bolt tensioning in this application. Please refer to [link / reference]. Figure 1 The support system includes: a fixing base 50, an angle adjustment component 10, and a pressure-bearing assembly 30, wherein the fixing base 50 is fixedly connected to the support structure 60. Please refer to... Figure 4 and Figure 5 The fixing base 50 includes a crossbeam 51 and a steel bracket 56. A first end plate 52 is welded to one end of the crossbeam. The first end plate is bolted to the side wall of the support structure 60, meaning one end of the crossbeam is fixedly connected to the support structure via the first end plate, and the other end of the crossbeam is a free end. In this embodiment, the crossbeam is horizontally arranged and is made of a first H-beam. The flanges of the first H-beam are vertically arranged, so that the web 510 of the first H-beam is horizontally arranged.

[0025] The steel bracket 56 is made of second H-beam and is inclined. A head plate 57 is welded to the upper end of the steel bracket. A first bolt hole 512 is opened on the web of the first H-beam, and a second bolt hole is opened on the head plate 57. Bolts are passed through the second bolt hole and the first bolt hole from bottom to top and then screwed on, fixing the upper end of the steel bracket to the lower side of the crossbeam. A second end plate 58 is welded to the lower end of the steel bracket and is fixed to the side wall of the support structure by bolts, thereby fixing the steel bracket to the side wall of the support structure.

[0026] To improve support strength, in this embodiment, a reinforcing rib plate 511 is welded into the groove on the lower side of the first H-beam. This reinforcing rib plate is located at the connection between the steel bracket and the first H-beam. In this embodiment, the steel bracket is made of a second H-beam. Both the first and second H-beams are H-beams, and their models can be the same or different. The prefixes "first" and "second" are only for ease of description and have no other meaning.

[0027] Please also refer to Figure 2 and Figure 3 The angle adjustment component 10 includes a U-shaped component 101 with its opening facing downwards. The U-shaped component 101 includes two parallel vertical plates 11 and an intermediate plate connecting the two vertical plates 11. The two ends of the intermediate plate are respectively connected to the upper ends of one of the vertical plates. A crossbeam is slidably inserted into the cavity between the two vertical plates, so that the two vertical plates are located on opposite sides of the crossbeam. In this embodiment, three intermediate plates are provided: a first intermediate plate 121, a second intermediate plate 122, and a third intermediate plate 123. All three intermediate plates are located on the upper side of the U-shaped component. Corresponding to each intermediate plate, a slot is provided on each vertical plate. The two ends of the intermediate plate are inserted into the corresponding slots, and the two ends of the intermediate plate are welded to a vertical plate. In this embodiment, the U-shaped component is made of steel plates. It can be understood that in another embodiment, it can also be made by bending a whole steel plate and strengthening certain parts.

[0028] A first hinge hole 513 is provided on each of the two flanges of the first H-beam, and the two first hinge holes are arranged opposite to each other. A second hinge hole 142 is provided on each vertical plate. The hinge shaft 16 passes through the second hinge hole and the first hinge hole and is locked with a nut so that the angle adjustment component is hinged to the crossbeam via the hinge shaft 16.

[0029] An adjustment hole 514 is provided on each of the two flanges of the first H-beam. The two adjustment holes 514 are arranged opposite each other, and both adjustment holes are located on the side of the first hinge hole away from the support structure. Four positioning holes 141 are provided on each of the two upright plates. The positioning holes on the two upright plates correspond one-to-one, and the corresponding positioning holes are arranged opposite each other. The positioning bolts 17 can pass through the positioning holes and adjustment holes to fix the relative position of the angle adjustment component and the crossbeam. By allowing the positioning bolts to pass through different positioning holes, the relative angle between the angle adjustment component and the crossbeam can be adjusted to accommodate anchor bolts 100 with different inclination angles. Each positioning hole is located on the side of the second hinge hole 142 away from the support structure. The positioning holes on the same upright plate are located on the same circle with the central axis of the second hinge hole as the central axis. In this embodiment, the angle between the line connecting the center point of two adjacent positioning holes and the center point of the second hinge hole on the same positioning plate is 8°, so that the angle adjustment component can rotate and be positioned relative to the crossbeam at an angle of 8°.

[0030] A limiting groove 15 is formed on the top of each of the two upright plates 11. The pressure-bearing component 30 is installed in the limiting groove, so that the pressure-bearing component is installed on the top of the angle adjusting member and is used to provide reaction force support for the tensioning of the anchor rod. The space between the two upright plates forms a first anchor rod channel for the anchor rod to pass through. The pressure-bearing component 30 includes a pressure-bearing member located on the top of the angle adjusting member and a pad 32 located on the upper side of the pressure-bearing member. In this embodiment, the pressure-bearing member is formed by two channel steels 31 with opposite groove openings. The two ends of the two channel steels 31 are respectively supported on the bottom surface of the two limiting grooves 15. The two channel steels are spaced apart. An anchor rod hole is formed on the pad. The gap between the two channel steels and the anchor rod hole together form a second anchor rod channel of the pressure-bearing component. The anchor body of the anchor bolt passes through the first and second anchor bolt channels sequentially from bottom to top and is then locked by the anchor bolt locking device. In this embodiment, the anchor body is specifically made of precision-rolled bolt steel, and the anchor bolt locking device is specifically a precision-rolled nut 41. The precision-rolled nut 41 is screwed onto the anchor body and supported on the upper side of the pad, locking the anchor body and thus locking the anchor bolt. It can be understood that during the tensioning process of the anchor bolt, the tensioner is supported on the pad. The two channel steels can be separate or connected into a whole using steel plates or other steel structures, prioritizing ease of operation during construction.

[0031] Please see Figure 1 as well as Figures 6-8 , Figure 1 as well as Figures 6-8 The different tilt angles of the angle adjustment component are shown to accommodate different tilt angles of the anchor bolts. In this embodiment, the support structure is vertically arranged, according to... Figure 1 , Figure 6 , Figure 7 and Figure 8 The order of the anchor bolts is as follows: the angles of the anchor bolts relative to the horizontal plane are 66°, 74°, 82° and 90° respectively.

[0032] To reinforce the opening area, a first reinforcing plate 131 and a second reinforcing plate 132 are welded to the outside of the upright plate. The first reinforcing plate 131 is located in the opening area of ​​the positioning hole, and the positioning hole penetrates through the first reinforcing plate. The second reinforcing plate is located in the opening area of ​​the second hinge hole, and the second hinge hole penetrates through the second reinforcing plate.

[0033] To improve the stability of the angle adjustment component 10 relative to the crossbeam, in this embodiment, the contact surfaces of the crossbeam and the vertical plate are sandblasted to achieve a cleanliness level of Sa2.5, and coated with inorganic zinc-rich paint, so that the contact surfaces of the crossbeam and the vertical plate form a friction-type high-strength bolt connection node. When the positioning bolts are tightened, the crossbeam and the vertical plate are pressed tightly together, and the anti-slip coefficient of the contact surface is ≥0.45.

Claims

1. An angle-adjustable support system for anchor bolt tensioning, characterized in that, include: The anchor, angle adjustment component, and pressure-bearing assembly are provided. The anchor is fixedly connected to the support structure. The anchor includes a crossbeam. The angle adjustment component is hinged to the crossbeam via a hinge shaft. An adjustment hole is provided on the crossbeam. At least two positioning holes are provided on the angle adjustment component. Positioning bolts can pass through the positioning holes and the adjustment holes to fix the relative position of the angle adjustment component and the crossbeam. The relative angle between the angle adjustment component and the crossbeam can be adjusted by passing the positioning bolts through different positioning holes to accommodate anchors with different inclination angles. The pressure-bearing assembly is mounted on top of the angle adjustment member and is used to provide reaction force support for the tensioning of the anchor bolt; both the angle adjustment member and the pressure-bearing assembly have anchor bolt channels through which the anchor bolt passes.

2. The angle-adjustable support system according to claim 1, characterized in that, The angle adjustment component includes a U-shaped component with an opening facing downwards. The U-shaped component has two parallel vertical plates that extend in a vertical direction. A crossbeam is slidably inserted into the cavity between the two vertical plates. A pressure-bearing component is fixed to the top of the two vertical plates, and positioning holes are opened on the vertical plates.

3. The angle-adjustable support system according to claim 2, characterized in that, When the positioning bolts are tightened, the crossbeam and the vertical plate are pressed tightly together, and the contact surfaces of the crossbeam and the vertical plate form a friction-type high-strength bolt connection node with an anti-slip coefficient ≥0.

45.

4. The angle-adjustable support system according to claim 2, characterized in that, A reinforcing plate is welded to the outside of the upright plate. The reinforcing plate is located in the opening area of ​​the positioning hole, and the positioning hole passes through the reinforcing plate.

5. The angle-adjustable support system according to claim 1, characterized in that, The pressure-bearing assembly includes a pressure-bearing member located on top of the angle adjustment member and a pad located on the upper side of the pressure-bearing member, which is used to support the tensioner or anchor bolt lock.

6. The angle-adjustable support system according to claim 1, characterized in that, The crossbeam is made of H-beams with vertical flanges. One end of the crossbeam is fixedly connected to the support structure, and adjustment holes are opened on the flanges of the H-beams.

7. The angle-adjustable support system according to claim 6, characterized in that, The mounting bracket also includes a steel bracket, one end of which is bolted to an H-beam, and the other end of which is fixed to the support structure.

8. The angle-adjustable support system according to claim 7, characterized in that, A reinforcing rib is welded into the groove on the lower side of the H-beam, and the reinforcing rib is located at the connection between the steel bracket and the H-beam.

9. The angle-adjustable support system according to claim 1, characterized in that, The angle adjustment component has a limiting groove at its top, and the pressure-bearing component is installed in the limiting groove.

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