Anchoring structure of prestressed end-bevel to vertical wedge ring

Abstract

The utility model discloses a kind of anchoring structures of prestressed end oblique surface rotation vertical wedge ring, it is related to prestressed anchoring construction structure technical field, including split wedge sleeve, inclined base, concrete inclined column and anchoring piece;The one end of the split wedge sleeve is fixedly connected with the side surface of inclined base;The other side surface of the inclined base is in conformance with concrete inclined column;The anchoring piece sequentially passes through concrete inclined column, inclined base and split wedge sleeve;The split wedge sleeve includes anchor plate, protective cover, fixed block, centering ring, pressure ring sensor and inclined gasket plate.The utility model has beneficial effects: both improve construction efficiency, and guarantee the security of anchoring structure.

Description

Technical Field

[0001] This utility model relates to the field of prestressed anchorage construction structure technology, and more specifically, to an anchorage structure in which a prestressed end inclined plane turns into a vertical wedge ring. Background Technology

[0002] Prestressed concrete technology represents a significant advancement in modern structural engineering. By pre-stressing concrete beams with compressive stress, it actively counteracts the tensile stress generated under service loads, thereby overcoming the inherent weakness of concrete's low tensile strength and significantly improving the crack resistance, stiffness, and load-bearing capacity of structural members. The core implementation of this technology lies in the tensioning and anchoring of high-strength prestressing tendons (such as steel strands).

[0003] Currently, prestressed systems and corresponding end-anchoring technologies have become quite mature and are widely used in various structures such as bridges and buildings. However, existing technologies and product systems are mainly designed and optimized based on conventional working conditions where the prestressing tendons are perpendicular to the anchorage surface. In this case, prestressed concrete beams and columns are usually perpendicular, with the prestressing tendons penetrating vertically into the concrete column. The bearing plate of the end anchor is perpendicular to the end face of the concrete beam and parallel to the column surface. The plate shape is regular (such as square or rectangular), the force transmission path is clear, and construction is simple and reliable. However, with the continuous innovation and development of architectural design concepts, the application of prestressed concrete inclined columns and inclined reinforcement is increasing to meet the needs of large-span, spatially irregular structures, or specific aesthetic requirements. This type of structure breaks the traditional vertical force transmission mode, causing the direction of the prestressing tendons to form an angle with the bearing surface that needs to be anchored (such as the foundation, pier cap, or another component). Traditional anchoring systems exhibit significant compatibility flaws: the inclined column surface and beam end form non-orthogonal inclined planes, preventing the anchor bearing plate from achieving surface contact with the column, resulting in a wedge-shaped gap (e.g., 10-50mm). During construction, it is often necessary to chisel away at parts of the inclined column to create an anchor installation plane, or add irregularly shaped concrete blocks to fill the gap. This not only compromises the structural integrity of the inclined column (e.g., weakening the concrete cover) but also adds complex procedures such as welding positioning and grouting sealing. Actual measurements show stress concentration in the anchoring zone. These makeshift solutions not only affect construction efficiency but also introduce safety hazards such as anchor slippage and concrete chipping.

[0004] Therefore, this utility model provides an anchoring structure with a prestressed end inclined plane turning into a vertical wedge ring, which can effectively reduce the prestress concentration coefficient and shorten the construction cycle, thereby improving construction efficiency and ensuring the safety of the anchoring structure. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides an anchoring structure with a prestressed end inclined plane turning into a vertical wedge ring, which can effectively reduce the prestress concentration coefficient and shorten the construction cycle, thereby improving construction efficiency and ensuring the safety of the anchoring structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is: an anchoring structure for a prestressed end inclined surface turning into a vertical wedge ring, the improvement of which is that the anchoring structure for the prestressed end inclined surface turning into a vertical wedge ring includes a split wedge sleeve, an inclined base, a concrete inclined column, and an anchor; one end of the split wedge sleeve is fixedly connected to one side of the inclined base; the other side of the inclined base is in contact with the concrete inclined column; the anchor passes through the concrete inclined column, the inclined base, and the split wedge sleeve in sequence;

[0007] The split-type wedge sleeve includes an anchor plate, a protective cover, a fixing block, a centering ring, a pressure ring sensor, and an inclined washer plate. The protective cover is installed on the end of the anchor plate away from the inclined base, and the end of the protective cover is fixedly connected to one side of the fixing block. The centering ring is fixedly connected to the end of the anchor plate. The pressure ring sensor and the fixing block are both sleeved on the outside of the anchor plate, and the pressure ring sensor is fixedly connected between the other side of the anchor plate and one side of the inclined washer plate. The inclined washer plate has a wedge-shaped cross-section, and the inclined surface of the inclined washer plate is fixedly connected to the other side of the inclined base.

[0008] In the above structure, the anchor includes a steel strand and a corrugated pipe; the corrugated pipe passes through the concrete inclined column and the inclined base in sequence; the steel strand passes through the corrugated pipe and the anchor plate in sequence.

[0009] In the above structure, a transverse diaphragm is pre-embedded in the concrete inclined column. The transverse diaphragm is close to the end of the concrete inclined column away from the inclined base, and the corrugated pipe passes through the transverse diaphragm.

[0010] In the above structure, a total of 37 steel strands are provided, including 36 anchor steel strands and 1 detection steel strand.

[0011] In the above structure, the end of the protective cover away from the fixed block is provided with an outlet, and the end of the detection steel strand away from the concrete inclined column is fixedly installed with an optical fiber sensor, and the signal line of the optical fiber sensor passes through the outlet.

[0012] In the above structure, the anchor plate is sleeve-shaped, and the end of the anchor plate is provided with a grouting hole, a venting hole, and a steel strand fixing hole, wherein the steel strand fixing hole is located between the venting hole and the grouting hole.

[0013] In the above structure, the split wedge sleeve also includes a steel clamp, which is embedded in the fixed installation hole, and both the detection steel strand and the anchoring steel strand are clamped in the fixed installation hole by the steel clamp.

[0014] In the above structure, the end of the protective cover is provided with a fixing hole, and the split wedge sleeve also includes a fixing bolt, which passes through the fixing hole and is inserted into the fixing block.

[0015] The beneficial effects of this utility model are as follows: This utility model eliminates the wedge-shaped gap between the traditional anchoring system and the inclined concrete column by fitting the inclined base with the inclined concrete column. Furthermore, the wedge-shaped structure design of the inclined pad ring plate of the split wedge-shaped ring sleeve allows the inclined surface of the pad ring plate to fit seamlessly with the inclined base, achieving a transition from an inclined structure to a vertical structure at the prestressing end. The fixed connection between the inclined base and the split wedge-shaped ring sleeve can withstand the oblique component force, converting it into a horizontal axial force, achieving a "slanted in, straight out" force transmission path to avoid excessive prestress concentration. Compared to traditional anchoring systems, this solution eliminates the need for chiseling or adding irregularly shaped concrete blocks to fill gaps in the inclined concrete column, thus optimizing and shortening the construction cycle. Therefore, this utility model effectively reduces the prestress concentration coefficient and shortens the construction cycle, thereby improving construction efficiency and ensuring the safety of the anchoring structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the anchoring structure of the prestressed end inclined surface to vertical wedge ring of the present invention.

[0017] Figure 2 This is a schematic diagram of the steel strand cross-section of an anchoring structure for a prestressed end inclined plane turning into a vertical wedge ring according to the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0020] Reference Figure 1As shown, this utility model discloses an anchoring structure for a prestressed end inclined surface turning into a vertical wedge ring. The anchoring structure includes a split wedge sleeve, an inclined surface base 2, a concrete inclined column 1, and anchors. One end of the split wedge sleeve is fixedly connected to one side of the inclined surface base 2; the other side of the inclined surface base 2 is in contact with the concrete inclined column 1; the anchors pass sequentially through the concrete inclined column 1, the inclined surface base 2, and the split wedge sleeve. The split wedge sleeve includes an anchor plate 4, a protective cover 3, and a fixed anchor. The anchor plate 4 consists of a fixed block 5, a centering ring 7, a pressure ring sensor 6, and an inclined pad ring plate 8. The protective cover 3 is installed on the end of the anchor plate 4 away from the inclined base 2, and the end of the protective cover 3 is fixedly connected to one side of the fixed block 5. The centering ring 7 is fixedly connected to the end of the anchor plate 4. The pressure ring sensor 6 and the fixed block 5 are both sleeved on the outside of the anchor plate 4, and the pressure ring sensor 6 is fixedly connected between the other side of the anchor plate and one side of the inclined pad ring plate 8. The inclined pad ring plate 8 has a wedge-shaped cross-section, and the inclined surface of the inclined pad ring plate 8 is fixedly connected to the other side of the inclined base 2.

[0021] It should be noted that, in this embodiment, the inclined base 2 is an inclined steel plate that can seamlessly fit with the surface of the concrete inclined column 1 (inclination angle 0°–45°). Its fit with the surface of the concrete inclined column 1 ensures full contact force transmission and protects the structural integrity of the concrete inclined column 1. The split wedge sleeve is used to cooperate with the inclined base 2 to realize the conversion of the prestressed end from an inclined structure to a vertical structure and to avoid excessive prestress concentration. Specifically, the split wedge sleeve includes an anchor plate 4, a protective cover 3, a fixing block 5, a centering ring 7, a pressure ring sensor 6, and an inclined washer ring plate 8. The anchor plate 4 is used to fix the anchor to ensure anchoring. The structure is stable; the protective cover 3 and anchor plate 4 are used to protect the anchor plate 4 and anchors from the influence of the external environment, increasing the service life of the anchoring system; the fixing block 5 is used to provide necessary mechanical support and mounting surface for the installation of pressure ring sensor 6 and protective cover 3. As a preferred embodiment, the end of the protective cover 3 is provided with a fixing mounting hole. The split wedge sleeve also includes a fixing bolt 13, which passes through the fixing mounting hole and is inserted into the fixing block 5; the design of the centering ring 7 is to ensure that the various components of the anchoring structure remain in a centered state, so that the prestress is transmitted more evenly and misalignment is avoided; the pressure ring sensor 6 is used for real-time monitoring of the pressure state of the prestressed anchorage structure to ensure the safety and stability of the system operation; the inclined pad ring plate 8, by being tightly fitted with the inclined base 2, improves the force transmission efficiency and uniformity; the anchor is used to apply and transmit prestress to the entire anchorage structure to ensure the stability of the entire anchorage structure; in the specific implementation of this utility model, the anchorage structure of the prestressed end inclined surface turning into a vertical wedge ring is fitted with the concrete inclined column 1 through the inclined base 2 to eliminate the wedge-shaped gap generated between the traditional anchorage system and the concrete inclined column 1, and through the wedge structure design of the inclined pad ring plate 8 of the split wedge ring sleeve, the inclined pad The inclined surface of the ring plate 8 can fit seamlessly with the inclined base 2 to realize the transformation of the prestressed end from an inclined structure to a vertical structure. The fixed connection between the inclined base 2 and the split wedge-shaped ring sleeve can withstand the inclined component force and convert it into a horizontal axial force, realizing a "slanted in and straight out" force transmission path to avoid excessive prestress concentration. Compared with the traditional anchoring system, this solution does not require local chiseling of the concrete inclined column 1 or the addition of irregular concrete blocks to fill the gaps, thus optimizing and shortening the construction cycle. Therefore, this utility model can effectively reduce the prestress concentration coefficient and shorten the construction cycle, thereby improving construction efficiency and ensuring the safety of the anchoring structure.

[0022] Reference Figure 1 and Figure 2As shown, the anchor includes steel strands and corrugated pipes 9; the corrugated pipes 9 pass through the concrete inclined column 1 and the inclined base 2 in sequence; the steel strands pass through the corrugated pipes 9 and the anchor plate 4 in sequence; a transverse diaphragm 12 is pre-embedded in the concrete inclined column 1, the transverse diaphragm 12 is close to the end of the concrete inclined column 1 away from the inclined base 2, and the corrugated pipes 9 pass through the transverse diaphragm 12; a total of 37 steel strands are provided, including 36 anchor steel strands 10 and 1 detection steel strand 11.

[0023] It should be noted that in this embodiment, the steel strands, which serve as the carrier for applying and transmitting prestress, are made of high-strength steel and generate enormous tensile force when tensioned. A total of 37 strands are designed, of which 36 anchor steel strands 10 serve as the main body for applying prestress, and one detection steel strand 11 is used to monitor its own strain changes, thereby more accurately calculating the stress state of the entire anchoring system and cross-checking the data with the pressure ring sensor 6 to improve monitoring reliability. The corrugated pipe 9 is used to provide prestressing channels, which are embedded in the concrete and form channels for the steel strands to pass through during pouring. After tensioning, grouting can be performed to bond the steel strands to the concrete and prevent corrosion.

[0024] Reference Figure 1 As shown, the protective cover 3 has an outlet 16 at the end away from the fixing block 5, and an optical fiber sensor is fixedly installed at the end of the detection steel strand 11 away from the concrete inclined column 1. The signal line 17 of the optical fiber sensor passes through the outlet 16.

[0025] It should be noted that, in this embodiment, by installing an optical fiber sensor (such as a fiber optic grating) on ​​the steel strand 11, the strain of the steel strand itself can be measured more accurately. Furthermore, the signal line 17 of the optical fiber sensor is led out to an external acquisition device through the optical fiber outlet 16, and the data is cross-checked with the data of the pressure ring sensor 6, forming a dual monitoring system to improve reliability.

[0026] Continue to refer to Figure 1 As shown, the anchor plate 4 is sleeve-shaped, and the end of the anchor plate 4 is provided with a grouting hole 14, a vent hole 15, and a steel strand fixing hole. The steel strand fixing hole is located between the vent hole 15 and the grouting hole 14. The split wedge sleeve also includes a steel clamp 18, which is embedded in the fixing hole. The detection steel strand 11 and the anchoring steel strand 10 are both clamped in the fixing hole by the steel clamp 18.

[0027] It should be noted that in this embodiment, the steel clamp 18 cooperates with the steel strand fixing hole to lock the steel strand after prestressing. As a preferred embodiment, the steel clamp 18 is composed of three toothed wedge-shaped blocks, the outer conical surface of which is adapted to the steel strand fixing hole, and the inner hole is used to clamp the steel strand. When the steel strand is tensioned, the steel clamp 18 is brought into the steel strand fixing hole of the anchor plate 4 and tightens as it is pulled. The wedge principle generates huge friction force, thereby locking the steel strand. The grouting hole 14 and the vent hole 15 are used to pour concrete into the inside of the anchor plate 4 after tensioning and to vent air to ensure that there is no corrosive environment inside, so as to ensure the sealing and stability of the anchoring structure.

[0028] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An anchoring structure for a prestressed end inclined plane turning into a vertical wedge-shaped ring, characterized in that, The anchoring structure of the prestressed end inclined surface to vertical wedge ring includes a split wedge sleeve, an inclined base, a concrete inclined column, and an anchor; one end of the split wedge sleeve is fixedly connected to one side of the inclined base; the other side of the inclined base is in contact with the concrete inclined column; the anchor passes through the concrete inclined column, the inclined base, and the split wedge sleeve in sequence. The split-type wedge sleeve includes an anchor plate, a protective cover, a fixing block, a centering ring, a pressure ring sensor, and an inclined washer plate. The protective cover is installed on the end of the anchor plate away from the inclined base, and the end of the protective cover is fixedly connected to one side of the fixing block. The centering ring is fixedly connected to the end of the anchor plate. The pressure ring sensor and the fixing block are both sleeved on the outside of the anchor plate, and the pressure ring sensor is fixedly connected between the other side of the fixing block and one side of the inclined washer plate. The inclined washer plate has a wedge-shaped cross-section, and the inclined surface of the inclined washer plate is fixedly connected to the other side of the inclined base.

2. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge-shaped ring according to claim 1, characterized in that, The anchor includes a steel strand and a corrugated pipe; the corrugated pipe passes through the concrete inclined column and the inclined base in sequence; the steel strand passes through the corrugated pipe and the anchor plate in sequence.

3. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge ring according to claim 2, characterized in that, A transverse diaphragm is pre-embedded in the inclined concrete column. The transverse diaphragm is located near the end of the inclined concrete column away from the inclined base, and the corrugated pipe passes through the transverse diaphragm.

4. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge ring according to claim 2, characterized in that, The steel strands consist of 37 strands in total, including 36 anchoring steel strands and 1 testing steel strand.

5. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge ring according to claim 4, characterized in that, The protective cover has an outlet at the end away from the fixed block, and an optical fiber sensor is fixedly installed at the end of the detection steel strand away from the concrete inclined column. The signal line of the optical fiber sensor passes through the outlet.

6. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge ring according to claim 1, characterized in that, The anchor plate is sleeve-shaped, and the end of the anchor plate is provided with a grouting hole, a venting hole and a steel strand fixing hole, wherein the steel strand fixing hole is located between the venting hole and the grouting hole.

7. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge ring according to claim 6, characterized in that, The split wedge sleeve also includes steel clamps, which are embedded in the fixed installation hole, and both the detection steel strand and the anchoring steel strand are clamped in the fixed installation hole by the steel clamps.

8. The anchoring structure for a prestressed end inclined plane turning into a vertical wedge-shaped ring according to claim 1, characterized in that, The end of the protective cover is provided with a fixing hole, and the split wedge sleeve also includes a fixing bolt, which passes through the fixing hole and is inserted into the fixing block.

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