Anchoring rod for improving stability of super-deep foundation pit support

Abstract

The utility model relates to the technical field of super -deep foundation pit reinforcing anchor rod, concretely just is a kind of anchor rod for improving the stability of super -deep foundation pit support.It includes vertical anchor rod and cable-stayed subassembly, and the front side of super -deep foundation pit side wall is equipped with support subassembly, the cable-stayed subassembly includes two inclined pull rod and fixed seat, the fixed seat is connected with support subassembly, and the end of vertical anchor rod away from support subassembly is equipped with reinforcing subassembly;When installing, reinforcing hole is opened inwards to super -deep foundation pit side wall, the vertical anchor rod is set in reinforcing hole, the end of inclined pull rod away from fixed seat is located in reinforcing hole, and the inside of reinforcing hole is poured with concrete, so that integrated fastening support structure is formed between vertical anchor rod and cable-stayed subassembly.Vertical anchor rod and cable-stayed subassembly form integrated fastening support structure by concrete pouring, significantly improve shear performance, improve lateral bearing capacity, realize force system efficient transmission, reduce stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of anchor bolt technology for reinforcing ultra-deep foundation pits, specifically an anchor bolt for improving the stability of ultra-deep foundation pit support. Background Technology

[0002] In support engineering for ultra-deep foundation pits (depth > 15m), the traditional anchor system is relatively simple. A single vertical anchor is prone to horizontal displacement, resulting in insufficient anchoring reliability. Some vertical anchors and tie rods work independently, and the stress transmission path is discontinuous, which easily forms stress concentration areas at the connection nodes, reducing the overall stability.

[0003] Therefore, this application provides an anchor bolt that improves the stability of ultra-deep foundation pit support, in order to solve the problem of insufficient reliability of existing anchor bolt systems. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an anchor bolt for improving the stability of ultra-deep foundation pit support.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an anchor rod to improve the stability of ultra-deep foundation pit support, including a vertical anchor rod and a diagonal tie assembly. A support assembly is configured on the front side of the ultra-deep foundation pit sidewall. The diagonal tie assembly includes two inclined tie rods and a fixed seat. The fixed seat is connected to the support assembly. A reinforcement assembly is configured on the end of the vertical anchor rod away from the support assembly.

[0006] During installation, reinforcement holes are opened inward through the side wall of the ultra-deep foundation pit. The vertical anchor rod is installed in the reinforcement hole, and the end of the inclined tie rod away from the fixed seat is located in the reinforcement hole. Concrete is poured into the reinforcement hole to form an integrated fastening support structure between the vertical anchor rod and the inclined tie assembly.

[0007] As an optimization, the reinforcement component includes a connecting ring and a V-shaped hinge frame connected between two adjacent connecting rings. Pushing the connecting ring shortens the opening of the V-shaped hinge frame, and the tip of the V-shaped hinge frame is inserted into the inner wall of the reinforcement hole to form a fixed end.

[0008] As an optimization, an installation sleeve is also included, the front end of which forms a push sleeve for pushing the connecting ring to move away from the support assembly.

[0009] As an optimization, the vertical anchor is equipped with a limiting ring, and the front end of the push sleeve forms a limiting opening for accommodating the limiting ring;

[0010] The inner diameter of the push sleeve is larger than the outer diameter of the limiting ring, and the inner diameter of the mounting sleeve is smaller than the outer diameter of the limiting ring.

[0011] As an optimization, the support assembly includes a transverse support plate and a longitudinal support plate. The transverse support plate has connecting ears at both ends, which are connected to the fixing seat. The longitudinal support plate is fixed to the outside of the transverse support plate.

[0012] As an optimization, the fixed base is provided with a first connecting hole and a second connecting hole, and the inclined pull rod includes an upper pull rod and a lower pull rod. The upper pull rod passes through the first connecting hole and extends into the upper reinforcement hole, and the lower pull rod passes through the second connecting hole and extends into the lower reinforcement hole.

[0013] The fixing base has a connecting screw hole in the middle, which is used to fix the support component.

[0014] As an optimization, the end of the vertical anchor rod furthest from the reinforcement component is threaded with a reinforcement end piece, the diameter of which is larger than the inner diameter of the reinforcement hole.

[0015] As an optimization, the end of the tilting rod furthest from the fixed seat is located on the front side of the reinforcement assembly.

[0016] The beneficial effects of this plan are as follows:

[0017] Vertical anchors and inclined tie rods are integrated into a fastened support structure through concrete pouring, which significantly improves shear resistance, increases lateral bearing capacity, achieves efficient force transmission, and reduces stress concentration.

[0018] Pushing the connecting ring causes the tip of the hinged frame to penetrate the hole wall, forming a mechanical interlock in the soft strata, effectively improving the anchoring force of the vertical anchor and ensuring the continuous effectiveness of the prestress. Attached Figure Description

[0019] Figure 1 This is an axonometric view of the present invention.

[0020] Figure 2 This is a schematic diagram of the front view of this utility model.

[0021] Figure 3 This utility model Figure 2 A schematic diagram of the AA cross-section structure.

[0022] Figure 4 This utility model Figure 3 A magnified structural diagram of part B.

[0023] Figure 5 This is a cross-sectional view of the installation state of this utility model.

[0024] Figure 6 This utility model Figure 5 A magnified structural diagram of part C.

[0025] Figure 7 This is a schematic diagram of the mounting sleeve shaft side of this utility model.

[0026] Figure 8 This is a side view of the fixed seat of this utility model.

[0027] Among them, 1. Vertical anchor rod, 2. Inclined tie rod, 3. Fixed seat, 4. Reinforcing hole, 5. Connecting ring, 6. V-shaped hinge frame, 7. Installation sleeve, 8. Push sleeve, 9. Limiting ring, 10. Horizontal support plate, 11. Longitudinal support plate, 12. Connecting lug, 13. First connecting hole, 14. Second connecting hole, 15. Connecting screw hole, 16. Reinforcing end piece. Detailed Implementation

[0028] like Figures 1-8 As shown, an anchor bolt for improving the stability of ultra-deep foundation pit support includes a vertical anchor bolt 1 and a diagonal tie assembly. A support assembly is configured on the front side of the ultra-deep foundation pit sidewall. The diagonal tie assembly includes two inclined tie rods 2 and a fixing seat 3. The fixing seat 3 is connected to the support assembly. A reinforcement assembly is configured on the end of the vertical anchor bolt 1 away from the support assembly.

[0029] During installation, a reinforcement hole 4 is opened inward through the side wall of the ultra-deep foundation pit. The vertical anchor rod 1 is installed in the reinforcement hole 4. The end of the inclined tie rod 2 away from the fixed seat 3 is located in the reinforcement hole 4. Concrete is poured into the reinforcement hole 4 to form an integrated fastening support structure between the vertical anchor rod 1 and the inclined tie assembly.

[0030] Vertical anchor rod 1 is made of high-strength alloy steel, and its length is customized according to the depth of the foundation pit. Inclined tie rod 2 is connected between the front side of the ultra-deep foundation pit sidewall and the front side of the reinforcement component to form a deep reinforcement structure.

[0031] The reinforcement hole 4 is used to accommodate the vertical anchor rod 1 and the poured concrete. At the same time, an inclined placement hole is opened between two adjacent reinforcement holes 4. The inclined placement hole is used to accommodate the inclined tie rod 2. A fixing groove is provided at the front end of the inclined placement hole. The fixing groove is used to accommodate the fixing seat 3.

[0032] like Figure 3 and Figure 6 As shown, the reinforcement component includes a connecting ring 5 and a V-shaped hinge frame 6 connected between two adjacent connecting rings 5. Pushing the connecting ring 5 causes the opening of the V-shaped hinge frame 6 to shorten, and the tip of the V-shaped hinge frame 6 is inserted into the inner wall of the reinforcement hole 4 to form a fixed end.

[0033] The connecting ring 5 can move along the vertical anchor rod 1. The opening of the V-shaped hinge frame 6 faces the vertical anchor rod 1. At least two V-shaped hinge frames 6 are configured between two adjacent connecting rings 5. Pushing the connecting ring 5 causes multiple V-shaped hinge frames 6 to retract simultaneously.

[0034] like Figures 5-7 As shown, it also includes an installation sleeve 7, the front end of which forms a push sleeve 8, which is used to push the connecting ring 5 to move away from the support assembly.

[0035] The axis of the mounting sleeve 7 can accommodate the vertical anchor rod 1 to pass through. The mounting sleeve 7 is fitted onto the outside of the vertical anchor rod 1. Pushing the mounting sleeve 7 will cause the mounting sleeve 7 to push the reinforcement component to deform.

[0036] like Figure 6 As shown, the vertical anchor rod 1 is equipped with a limiting ring 9, and the front end of the push sleeve 8 forms a limiting opening, which is used to accommodate the limiting ring 9;

[0037] The inner diameter of the pushing sleeve 8 is larger than the outer diameter of the limiting ring 9, and the inner diameter of the mounting sleeve 7 is smaller than the outer diameter of the limiting ring 9.

[0038] like Figure 1 As shown, the support assembly includes a transverse support plate 10 and a longitudinal support plate 11. The transverse support plate 10 has connecting ears 12 at both ends, which are connected to the fixing seat 3. The longitudinal support plate 11 is fixed to the outside of the transverse support plate 10.

[0039] The longitudinal support plates 11 and the transverse support plates 10 are set vertically to provide efficient support for the sidewalls of ultra-deep foundation pits. Depending on the spacing between the transverse support plates 10 and the spacing between the longitudinal support plates 11, an appropriate number of transverse support plates 10 or longitudinal support plates 11 can be added.

[0040] like Figure 3 and Figure 4 As shown, the fixed base 3 has a first connecting hole 13 and a second connecting hole 14. The inclined pull rod 2 includes an upper pull rod and a lower pull rod. The upper pull rod passes through the first connecting hole 13 and extends into the upper reinforcing hole 4. The lower pull rod passes through the second connecting hole 14 and extends into the lower reinforcing hole 4.

[0041] The fixing base 3 has a connecting screw hole 15 in the middle, which is used to fix the support component.

[0042] The outer end of the inclined tie rod 2 is fixed by a fastening nut, and the other end of the inclined tie rod 2 is connected and fixed to the reinforcement hole 4 by concrete.

[0043] like Figure 1 and Figure 3 As shown, the end of the vertical anchor rod 1 furthest from the reinforcement component is threadedly connected to a reinforcement end piece 16, the diameter of which is larger than the inner diameter of the reinforcement hole 4.

[0044] The outer end of the reinforcement hole 4 is sealed by the reinforcement end piece 16 to prevent concrete from flowing out.

[0045] like Figure 3 As shown, the end of the inclined tie rod 2 away from the fixed base 3 is located on the front side of the reinforcement assembly.

[0046] When the device is used, a crawler drilling rig is used to drill reinforcement holes 4 on the side wall of the foundation pit. The vertical anchor rod 1 is placed inside the reinforcement hole 4. The push sleeve 8 is moved forward to push the connecting ring 5 to compress the V-shaped hinge frame 6. The tip of the frame is inserted into the hole wall, so that the reinforcement component and the reinforcement hole 4 form a mechanical interlock.

[0047] After the end of the diagonal tie rod extends into the corresponding reinforcement hole 4, C40 micro-expansion concrete is poured into the reinforcement hole 4 and vibrated to ensure that it covers the vertical anchor rod 1 and the end of the diagonal tie rod, forming an integral truss structure.

[0048] Tighten the reinforcing end piece 16 to lock the vertical anchor rod 1;

[0049] The support plate and the fixed base 3 can be fastened with high-strength bolts through the connecting screw holes 15.

[0050] The V-shaped hinged frame 6 penetrates the hole wall to form a preliminary anchor. After the concrete is poured, a secondary gripping force is generated, which comprehensively improves the overall pull-out resistance of the device.

[0051] The above-described specific embodiments are merely specific examples of this utility model. The patent protection scope of this utility model includes, but is not limited to, the product form and style of the above-described specific embodiments. Any anchor bolt that improves the stability of ultra-deep foundation pit support in accordance with the claims of this utility model, and any appropriate changes or modifications made to it by those skilled in the art, shall fall within the patent protection scope of this utility model.

Claims

1. An anchor bolt for improving the stability of ultra-deep foundation pit support, characterized in that: It includes a vertical anchor (1) and a diagonal tie assembly. A support assembly is provided on the front side of the ultra-deep foundation pit sidewall. The diagonal tie assembly includes two inclined tie rods (2) and a fixed seat (3). The fixed seat (3) is connected to the support assembly. A reinforcement assembly is provided at the end of the vertical anchor (1) away from the support assembly. During installation, a reinforcement hole (4) is opened inward through the side wall of the ultra-deep foundation pit. The vertical anchor rod (1) is set in the reinforcement hole (4). The end of the inclined tie rod (2) away from the fixed seat (3) is located in the reinforcement hole (4). Concrete is poured into the reinforcement hole (4) so ​​that the vertical anchor rod (1) and the inclined tie assembly form an integrated fastening support structure.

2. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 1, characterized in that: The reinforcement component includes a connecting ring (5) and a V-shaped hinge frame (6) connected between two adjacent connecting rings (5). Pushing the connecting ring (5) shortens the opening of the V-shaped hinge frame (6), and the tip of the V-shaped hinge frame (6) is inserted into the inner wall of the reinforcement hole (4) to form a fixed end.

3. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 2, characterized in that: It also includes an installation sleeve (7), the front end of which forms a push sleeve (8), which is used to push the connecting ring (5) to move away from the support assembly.

4. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 3, characterized in that: The vertical anchor rod (1) is equipped with a limiting ring (9), and the front end of the push sleeve (8) forms a limiting opening, which is used to accommodate the limiting ring (9); The inner diameter of the push sleeve (8) is greater than the outer diameter of the limiting ring (9), and the inner diameter of the mounting sleeve (7) is smaller than the outer diameter of the limiting ring (9).

5. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 1, characterized in that: The support assembly includes a transverse support plate (10) and a longitudinal support plate (11). The transverse support plate (10) has connecting ears (12) at both ends. The connecting ears (12) are connected to the fixing seat (3). The longitudinal support plate (11) is fixed to the outside of the transverse support plate (10).

6. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 1, characterized in that: The fixed base (3) has a first connecting hole (13) and a second connecting hole (14). The inclined pull rod (2) includes an upper pull rod and a lower pull rod. The upper pull rod passes through the first connecting hole (13) and extends into the upper reinforcing hole (4). The lower pull rod passes through the second connecting hole (14) and extends into the lower reinforcing hole (4). The fixing base (3) has a connecting screw hole (15) in the middle, which is used to fix the support component.

7. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 1, characterized in that: The vertical anchor rod (1) has a threaded end piece (16) at the end away from the reinforcement component. The diameter of the reinforcement end piece (16) is larger than the inner diameter of the reinforcement hole (4).

8. The anchor bolt for improving the stability of ultra-deep foundation pit support according to claim 1, characterized in that: The end of the inclined tie rod (2) away from the fixed seat (3) is located on the front side of the reinforcement assembly.

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