A capsule grouting structure of a capsule prestressed anti-floating anchor rod

Abstract

The utility model relates to civil engineering device technical field discloses a capsule body grouting structure of capsule type prestress anti -floating anchor rod, including mounting panel, the outside of mounting panel is provided with anchoring mechanism, the bottom of anchoring mechanism is provided with waterproof mechanism, waterproof mechanism is used for waterproof treatment at device gap, the top of waterproof mechanism is provided with concrete cushion layer, the outside of anchoring mechanism is covered with concrete protective layer, the anchoring mechanism includes fixed socket, the bottom fixed connection of fixed socket in the inside bottom of concrete protective layer, the inside fixed connection of fixed socket has spiral rib. In the utility model, the expansion sealing strip expands when meeting water, the anchor device backing plate supports the bottom of spiral rib, the anchor device sheath wraps the outside protection, ensure that spiral rib installation position is accurate, ensure that the anchoring section of anchor rod is stressed evenly, avoid partial stress concentration and take place failure, improve the durability and reliability of anti -floating effect.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering equipment technology, and in particular to a bladder-type prestressed anti-buoyancy anchor bolt grouting structure. Background Technology

[0002] Prestressed bladder-type anti-buoyancy anchor is an anti-buoyancy support structure. It is an anchor with a rubber bladder. The anchor body is formed by high-pressure grouting into the bladder. After applying prestress, the pull-out resistance is enhanced. It is suitable for anti-buoyancy in underground engineering. It has the characteristics of convenient construction, high bearing capacity and small deformation. It can effectively resist the buoyancy of groundwater on the structure.

[0003] The grouting structure of the capsule is the core of the capsule-type prestressed anti-buoyancy anchor. High-pressure grouting causes the capsule to expand and tightly interlock with the surrounding soil, forming an enlarged end anchor body, which greatly improves the pull-out bearing capacity. The size of the anchor body is controlled by the grouting pressure to ensure uniform stress, reduce deformation, fill soil gaps, enhance the integrity of the anchoring section, adapt to complex geology, and ensure stable and reliable anti-buoyancy effect.

[0004] After the foundation pit is backfilled, the building will float upward due to the buoyancy of groundwater, which will damage the structural stability and threaten the overall safety. In the existing technology, anti-buoyancy anchors can provide downward tension through the anchoring effect between the anchor and the foundation to counteract the buoyancy, prevent the building from floating and ensure structural stability. However, in actual use, the anchoring section of the anchor may fail due to uneven stress distribution, resulting in local stress concentration, which affects the durability and reliability of the anti-buoyancy effect. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a bladder-type prestressed anti-buoyancy anchor bolt grouting structure, which aims to improve the problem that the anchoring section of the existing anchor bolt will fail due to uneven stress distribution, resulting in local stress concentration and affecting the durability and reliability of the anti-buoyancy effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a bladder-type prestressed anti-buoyancy anchor bolt grouting structure, including an installation plate, an anchoring mechanism provided on the outside of the installation plate, a waterproofing mechanism provided at the bottom of the anchoring mechanism, the waterproofing mechanism being used for waterproofing the gaps in the device, a concrete pad layer provided on the top of the waterproofing mechanism, and a concrete protective layer covering the outside of the anchoring mechanism. The anchoring mechanism includes a fixed socket, the bottom end of which is fixedly connected to the inner bottom of the concrete protective layer. A threaded steel bar is fixedly connected to the inner side of the fixed socket. A spring is fixedly connected to the bottom of the outer wall of the threaded steel bar. Two expansion sealing strips are fixedly connected to the inner side of the spring. An anchor pad is fixedly connected to the inner bottom of the concrete protective layer. An anchor sleeve is fixedly connected to the inner side of the concrete protective layer. An installation assembly is provided on the top of the concrete pad. A protective assembly is provided on the top of the installation assembly.

[0007] As a further description of the above technical solution: The waterproofing mechanism includes a base waterproofing layer, the bottom of which is fixedly connected to the top of the concrete protective layer. A first waterproof coating is fixedly connected to the bottom of the concrete cushion layer. A second waterproof coating is fixedly connected to the bottom of the first waterproof coating. An additional waterproof layer is fixedly connected to the bottom of the second waterproof coating. A fixing component is provided at the bottom of the concrete cushion layer.

[0008] As a further description of the above technical solution: The anchoring mechanism also includes multiple anti-slip strips, the bottoms of which are fixedly connected to the top of the anchor pad, and the multiple anti-slip strips are arranged at equal intervals.

[0009] As a further description of the above technical solution: The installation assembly includes an anchor seat, the bottom of which is fixedly connected to the top of the concrete pad, and a sleeve is fixedly connected to the inner side of the anchor seat.

[0010] As a further description of the above technical solution: The protective assembly includes a mounting base, the bottom of which is fixedly connected to the top of the anchor seat, and the top edge of the mounting base is chamfered.

[0011] As a further description of the above technical solution: The protective assembly also includes a screw cap, the bottom of which is located on top of the mounting base. The outer side of the screw cap has a hexagonal structure, and the top of the screw cap has a rounded finish.

[0012] As a further description of the above technical solution: The fixing component includes a round steel outer cylinder, the top of which is fixedly connected to the bottom of the concrete cushion layer, and a round steel inner cylinder is fixedly connected to the inner side of the round steel outer cylinder.

[0013] As a further description of the above technical solution: The fixing component also includes asphalt paste, the outer wall and inner side of which are fixedly connected to the inner side of the outer steel cylinder and the outer side of the inner steel cylinder, respectively. The asphalt paste has a ring-shaped structure.

[0014] This utility model has the following beneficial effects: 1. In this utility model, when the threaded steel bar is under stress, the spring at the bottom of the outer wall deforms, and the expansion sealing strip expands when it comes into contact with water, which improves the safety of use. The anchor pad supports the bottom of the threaded steel bar, and the anchor sleeve wraps the outside for protection, ensuring that the installation position of the threaded steel bar is accurate, ensuring that the stress distribution of the anchoring section of the anchor rod is uniform, avoiding local stress concentration and failure, and improving the durability and reliability of the anti-buoyancy effect.

[0015] 2. In this utility model, the waterproof layer of the base plate covers the top of the concrete protective layer. The waterproof coating one and the waterproof coating two are stacked sequentially at the bottom of the concrete cushion layer. The additional waterproof layer is attached to the bottom of the waterproof coating two to fill the gaps. The outer round steel cylinder of the fixing component is fixed to the bottom of the concrete cushion layer, forming a double-layer structure with the inner round steel cylinder. Asphalt mastic is used to fill the gaps, thereby achieving waterproof coverage of the surface, improving the overall waterproof sealing performance, and providing targeted sealing for specific areas. This effectively prevents moisture from penetrating from the bottom and gaps, enhancing the waterproof barrier effect. Attached Figure Description

[0016] Figure 1 This is a perspective view of the grouting structure of a bladder-type prestressed anti-buoyancy anchor bolt proposed in this utility model; Figure 2 This is an exploded view of the waterproofing mechanism in the grouting structure of a bladder-type prestressed anti-buoyancy anchor rod proposed in this utility model; Figure 3 This is a cross-sectional view of the concrete protective layer in the grouting structure of a prestressed anti-buoyancy anchor rod according to the present invention. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is an exploded view of the fixing components in the grouting structure of a bladder-type prestressed anti-buoyancy anchor rod proposed in this utility model. Figure 6 This is an exploded view of the installation components in the grouting structure of a bladder-type prestressed anti-buoyancy anchor rod proposed in this utility model.

[0017] Legend: 1. Concrete protective layer; 2. Concrete cushion layer; 3. Anchoring mechanism; 31. Fixed socket; 32. Threaded steel bar; 33. Anchor sleeve; 34. Anchor pad; 35. Expansion sealing strip; 36. Spring; 37. Anti-slip strip; 38. Installation components; 381. Anchor seat; 382. Sleeve; 39. Protective components; 391. Fixed seat; 392. Cap; 4. Waterproofing mechanism; 41. Base waterproof layer; 42. Waterproof coating one; 43. Waterproof coating two; 44. Additional waterproof layer; 45. Fixed components; 451. Round steel outer cylinder; 452. Round steel inner cylinder; 453. Asphalt sealant; 5. Mounting plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Reference Figure 1 , Figure 3 , Figure 4 and Figure 6 An embodiment of this utility model is provided: a bladder-type prestressed anti-buoyancy anchor bolt bladder grouting structure, including an installation plate 5, an anchoring mechanism 3 is provided on the outside of the installation plate 5, a waterproof mechanism 4 is provided at the bottom of the anchoring mechanism 3, the waterproof mechanism 4 is used for waterproofing the gaps in the device, a concrete pad layer 2 is provided on the top of the waterproof mechanism 4, and a concrete protective layer 1 is provided on the outside of the anchoring mechanism 3. The anchoring mechanism 3 includes a fixed socket 31, the bottom of which is fixedly connected to the inner bottom of the concrete protective layer 1. A threaded steel bar 32 is fixedly connected to the inner side of the fixed socket 31. A spring 36 is fixedly connected to the bottom of the outer wall of the threaded steel bar 32. Two expansion sealing strips 35 are fixedly connected to the inner side of the spring 36. An anchor pad 34 is fixedly connected to the inner bottom of the concrete protective layer 1. An anchor sleeve 33 is fixedly connected to the inner side of the concrete protective layer 1. The anchoring mechanism 3 also includes multiple anti-slip strips 37, the bottom of which are all fixedly connected to the top of the anchor pad 34. The multiple anti-slip strips 37 are arranged at equal intervals. An installation assembly 38 is provided on the top of the soil cushion layer 2. The installation assembly 38 includes an anchor 381. The bottom of the anchor 381 is fixedly connected to the top of the concrete cushion layer 2. A sleeve 382 is fixedly connected to the inner side of the anchor 381. A protective assembly 39 is provided on the top of the installation assembly 38. The protective assembly 39 includes a fixing seat 391. The bottom of the fixing seat 391 is fixedly connected to the top of the anchor 381. The top edge of the fixing seat 391 is chamfered. The protective assembly 39 also includes a cap 392. The bottom of the cap 392 is located on the top of the fixing seat 391. The outer side of the cap 392 is a hexagonal structure. The top of the cap 392 is rounded. Specifically, the fixed socket 31 provides an installation base for the threaded steel bar 32. When the threaded steel bar 32 is under force, the spring 36 at the bottom of the outer wall deforms, and the two expansion sealing strips 35 expand when exposed to water. Through the cooperation of the spring 36 and the expansion sealing strips 35, the connection between the threaded steel bar 32 and the fixed socket 31 is strengthened. The anchor pad 34 provides support for the bottom of the threaded steel bar 32. The anchor sleeve 33 is fixedly connected to the top of the mounting plate 5, providing additional protection for the central spring 36 and the threaded steel bar 32. The anti-slip strip 37 on the top increases the friction with the contact parts. Through the cooperation of the anchor pad 34 and the anti-slip strip 37, the parts are prevented from sliding relative to each other. The anchor sleeve 33 wraps around the outside, forming a protective layer for the internal structure and preventing the external environment from corroding the anchoring parts. In the installation component 38, the anchor 381 is fixed to the top of the concrete pad 2, and the inner sleeve 382 provides a passage for the threaded steel bar 32. The cooperation between the anchor 381 and the sleeve 382 ensures the accuracy of the installation position of the threaded steel bar 32. The fixing seat 391 of the protective component 39 supports the top structure. The chamfering treatment of its top edge avoids damage when in contact. The cap 392 covers the top of the fixing seat 391. The hexagonal structure facilitates the tightening operation, and the smooth treatment of the top improves the safety of use. The cooperation between the fixing seat 391 and the cap 392 forms a closed protection for the top of the installation component 38.

[0019] Reference Figure 1 , Figure 2 and Figure 5The waterproofing mechanism 4 includes a base waterproofing layer 41, the bottom of which is fixedly connected to the top of the concrete protective layer 1. A waterproof coating 42 is fixedly connected to the bottom of the concrete cushion layer 2. A waterproof coating 43 is fixedly connected to the bottom of the waterproof coating 42. An additional waterproofing layer 44 is fixedly connected to the bottom of the waterproof coating 43. A fixing component 45 is provided at the bottom of the concrete cushion layer 2. The fixing component 45 includes a round steel outer cylinder 451, the top of which is fixedly connected to the bottom of the concrete cushion layer 2. A round steel inner cylinder 452 is fixedly connected to the inner side of the round steel outer cylinder 451. The fixing component 45 also includes asphalt paste 453, the outer wall and inner side of which are fixedly connected to the inner side of the round steel outer cylinder 451 and the outer side of the round steel inner cylinder 452, respectively. The asphalt paste 453 has a ring structure. Specifically, the base waterproof layer 41 covers the top of the concrete protective layer 1, forming the first waterproof barrier to prevent moisture from penetrating from the bottom. Waterproof coating 42 and waterproof coating 43 are layered sequentially on the bottom of the concrete cushion layer 2. Waterproof coating 42 uses a cement-based penetrating crystallizing slurry and a non-curing rubber asphalt waterproof coating. These two layers enhance the waterproof barrier effect. An additional waterproof layer 44 is attached to the bottom of waterproof coating 43 to fill any gaps. Through the combined effect of waterproof coating 42, waterproof coating 43, and additional waterproof layer 44, the overall waterproof sealing is improved. In the fixing component 45, the outer cylindrical steel cylinder 451 is fixed to the bottom of the concrete pad 2, and the inner cylindrical steel cylinder 452 on the inner side forms a double-layer structure with the outer cylindrical steel cylinder 451. The annular asphalt paste 453 is filled between the two. Through the cooperation of the outer cylindrical steel cylinder 451, the inner cylindrical steel cylinder 452 and the asphalt paste 453, the gaps in the cylindrical structure are sealed to prevent water from seeping along the gaps, thus achieving waterproof coverage of the foundation surface. Through the cooperation of the double-layer cylindrical structure of the fixing component 45 and the asphalt paste 453, targeted sealing of specific parts is achieved, effectively preventing water intrusion.

[0020] Working principle: The foundation concrete is poured using C20 plain concrete. The surface of the concrete foundation 2 within a 300mm radius around the anchoring mechanism 3 is smoothed and finished. After the concrete foundation 2 has completely solidified, two coats of waterproof coating 42 (a cement-based penetrating crystallizing grout) are evenly applied to the 300mm radius around the anchoring mechanism 3. Waterproof coating 42 is then applied again to the same area using waterproof coating 43 (a non-curing rubber asphalt waterproof coating) to form a waterproof layer. Next, the anchor plates 34 and fastening nuts of the anchoring mechanism 3 are installed, and the system is then tensioned according to the specified parameters. The design requires the application of prestress for anchor sealing, which must be carried out after the grouting strength of the anchor body reaches 90% of the design strength. Then, the outer round steel cylinder 451 and the inner round steel cylinder 452 of the fixing component 45 are installed at the root of the threaded steel bar 32. The outer round steel cylinder 451 is filled with asphalt paste 453, which is made of non-curing rubber asphalt. Then, the waterproof additional layer 44 is constructed. A 600mm wide and 3mm thick SBS additional layer is fully adhered around the anchoring mechanism 3. Then, the bottom waterproof layer 41 is laid, which is made of modified asphalt waterproof layer. Finally, a 50mm thick C20 fine stone concrete protective layer 1 is poured to complete the construction of the concrete protective layer 1. The fixed socket 31 secures the threaded steel bar 32, the spring 36 and the expansion sealing strip 35 enhance the tightness of the connection, the anchor sleeve 33 protects the internal structure, the anti-slip strip 37 prevents the components from sliding, the installation component 38 ensures the accurate position of the threaded steel bar 32, and the protective component 39 forms a closed protection, realizing the stable anchoring and effective waterproofing of the bladder-type prestressed anti-buoyancy anchor rod, meeting the design requirements of anti-buoyancy and waterproofing.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bladder-type prestressed anti-buoyancy anchor bolt grouting structure, comprising an mounting plate (5), characterized in that: An anchoring mechanism (3) is provided on the outside of the mounting plate (5). A waterproofing mechanism (4) is provided at the bottom of the anchoring mechanism (3). The waterproofing mechanism (4) is used for waterproofing the gaps in the device. A concrete pad layer (2) is provided on the top of the waterproofing mechanism (4). A concrete protective layer (1) covers the outside of the anchoring mechanism (3). The anchoring mechanism (3) includes a fixed socket (31), the bottom end of which is fixedly connected to the inner bottom of the concrete protective layer (1). A threaded steel bar (32) is fixedly connected to the inner side of the fixed socket (31). A spring (36) is fixedly connected to the bottom of the outer wall of the threaded steel bar (32). Two expansion sealing strips (35) are fixedly connected to the inner side of the spring (36). An anchor pad (34) is fixedly connected to the inner bottom of the concrete protective layer (1). An anchor sleeve (33) is fixedly connected to the inner side of the concrete protective layer (1). An installation component (38) is provided on the top of the concrete pad (2). A protective component (39) is provided on the top of the installation component (38).

2. The grouting structure of the prestressed anti-buoyancy anchor bolt according to claim 1, characterized in that: The waterproofing mechanism (4) includes a base waterproofing layer (41), the bottom of which is fixedly connected to the top of the concrete protective layer (1), the bottom of the concrete cushion layer (2) is fixedly connected to a first waterproof coating (42), the bottom of the first waterproof coating (42) is fixedly connected to a second waterproof coating (43), the bottom of the second waterproof coating (43) is fixedly connected to a third waterproof coating (44), and the bottom of the concrete cushion layer (2) is provided with a fixing component (45).

3. The grouting structure of the bladder-type prestressed anti-buoyancy anchor bolt according to claim 1, characterized in that: The anchoring mechanism (3) also includes multiple anti-slip strips (37), the bottom of which is fixedly connected to the top of the anchor pad (34), and the multiple anti-slip strips (37) are arranged at equal intervals.

4. The grouting structure of the bladder-type prestressed anti-buoyancy anchor bolt according to claim 1, characterized in that: The installation assembly (38) includes an anchor (381), the bottom of which is fixedly connected to the top of the concrete pad (2), and a sleeve (382) is fixedly connected to the inner side of the anchor (381).

5. The grouting structure of the bladder-type prestressed anti-buoyancy anchor bolt according to claim 4, characterized in that: The protective component (39) includes a fixing seat (391), the bottom of which is fixedly connected to the top of the anchor (381), and the top edge of the fixing seat (391) is chamfered.

6. The grouting structure of the bladder-type prestressed anti-buoyancy anchor bolt according to claim 5, characterized in that: The protective component (39) also includes a screw cap (392), the bottom of which is located on the top of the fixing base (391), the outer side of which is a hexagonal structure, and the top of which is rounded.

7. The grouting structure of the bladder-type prestressed anti-buoyancy anchor bolt according to claim 2, characterized in that: The fixing component (45) includes a round steel outer cylinder (451), the top of which is fixedly connected to the bottom of the concrete pad (2), and a round steel inner cylinder (452) is fixedly connected to the inner side of the round steel outer cylinder (451).

8. The grouting structure of the prestressed anti-buoyancy anchor bolt according to claim 7, characterized in that: The fixing component (45) also includes asphalt paste (453), the outer wall and inner side of which are fixedly connected to the inner side of the outer steel cylinder (451) and the outer side of the inner steel cylinder (452), respectively. The asphalt paste (453) has a ring structure.

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