A V-shaped pier prestress tension axis correction type anchor block device

Abstract

An axial correction anchor block device for V-shaped pier prestressing tensioning includes an anchor block body with a first through hole in the middle. A steel strand connecting the V-shaped pier and the anchor block body is installed in the first through hole. The anchor block body includes a fixing plate and an abutment plate, which are connected by several connecting plates. The fixing plate is vertically arranged, and the abutment plate abuts against the side of the V-shaped pier at an angle to the horizontal plane. The first through hole horizontally penetrates the fixing plate and the abutment plate. This anchor block device conforms to the side of the V-shaped pier, thus minimizing the axial deviation between the steel strand passing through the first through hole and the anchor block body. The tensioning direction is adjusted to be horizontally coaxial, increasing tensioning efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering construction technology, and in particular to an axis correction anchor block device for V-shaped pier prestressing tensioning. Background Technology

[0002] In the construction of V-shaped piers, the pier legs are inclined in both directions. During traditional prestressing tensioning, the axis of the anchor block (anchor) forms a spatial angle with the axis of the steel strand, which easily generates lateral force. Current construction data shows that when the axis deviation is ≥3°, the stress loss under the anchor can reach 12-18%, and it is easy to cause slippage of the wedges. Correspondingly, the accident rate will increase by 27%.

[0003] On the one hand, the existing anchor plates used for anchor blocks (anchors) are basically planar structures, which cannot compensate for spatial angular deviations, and eccentric force will lead to excessive local compressive stress in the concrete; on the other hand, complex steering mechanisms can be used to unify the axis of the anchor block (anchor) and the axis of the steel strand, but the construction efficiency will be reduced by 40% when using complex steering mechanisms.

[0004] Based on this, an axis-correcting anchor block device for V-shaped pier prestressing tensioning is designed. Utility Model Content

[0005] The present invention aims to overcome the defects in the prior art and provide an axial correction anchor block device for V-shaped pier prestressing tensioning.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an axial correction anchor block device for V-shaped pier prestressing tensioning, comprising an anchor block body, wherein the anchor block body has a first through hole in the middle, and a steel strand capable of connecting the V-shaped pier and the anchor block body is installed in the first through hole. The anchor block body includes a fixing plate and an abutment plate, and the fixing plate and the abutment plate are connected by a plurality of connecting plates. The fixing plate is vertically arranged, and the abutment plate abuts against the side of the V-shaped pier and is arranged at an angle to the horizontal plane. The first through hole horizontally penetrates the fixing plate and the abutment plate.

[0007] In a preferred embodiment of this utility model, the fixing plate is located in the center of the abutment plate, and the length and width of the fixing plate are at least 1 / 2 of the length and width of the abutment plate.

[0008] As a preferred embodiment of this utility model, the abutment plate is an arc-shaped panel, and the abutment plate has several second through holes around its perimeter for easy hoisting or connection.

[0009] As a preferred embodiment of this utility model, the angle between the abutting plate and the horizontal plane is 20°-80°.

[0010] As a preferred embodiment of this utility model, the diameter of the first through hole is at least 1 / 2 of the length and width of the fixing plate.

[0011] In a preferred embodiment of this utility model, the connecting plate includes a main board, which consists of two main boards symmetrically arranged on both sides of the first through hole. The main board is connected to a fixing plate and an abutment plate, and the main board is perpendicular to the fixing plate and the abutment plate.

[0012] In a preferred embodiment of this utility model, the connecting plate includes a reinforcing plate, which is located between the fixing plate and the abutment plate and is vertically fixed on the main plate. The reinforcing plate includes an upper reinforcing plate, a middle reinforcing plate and a lower reinforcing plate arranged sequentially from top to bottom.

[0013] In a preferred embodiment of this utility model, the connecting plate includes a secondary plate, which includes a primary plate and a secondary plate. The primary plate and the secondary plate are located on the upper and lower sides of the first through hole, and the primary plate and the secondary plate are connected to the main plate which is symmetrically positioned on the left and right sides.

[0014] In a preferred embodiment of this utility model, the connecting plate includes a reinforcing plate, which includes a first reinforcing plate and a second reinforcing plate. The first reinforcing plate connects the first plate and the abutment plate, and the second reinforcing plate connects the second plate and the abutment plate. The first reinforcing plate and the second reinforcing plate are arranged parallel to the main plate.

[0015] In a preferred embodiment of this utility model, the main board, reinforcing plate, secondary plate and reinforcement plate are welded together.

[0016] The beneficial effects of this utility model are: 1. The anchor block device of this utility model can fit the side of the V-shaped pier, thereby making the axial deviation between the steel strand passing through the first through hole and the anchor block body smaller, adjusting the tensioning direction to be horizontal and coaxial, increasing the tensioning efficiency and safety.

[0017] 2. By setting up a main plate, a reinforcing plate, a secondary plate, and a strengthening plate, this utility model ensures that the anchor block body can always abut against the side of the V-shaped pier by setting up a main plate, a reinforcing plate, a secondary plate, and a strengthening plate. This ensures that the axis of the anchor block body is basically consistent with the axis of the steel strand, avoiding the formation of a spatial angle between the axis of the anchor block body and the axis of the steel strand during prestressing tension, which would generate a lateral force and thus increase the accident rate. On the other hand, it also protects the inside of the first through hole, enhances the strength of the anchor block body, and improves the service life of the anchor block body.

[0018] 3. This utility model can achieve quick assembly and disassembly, adapting to different working conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention AA; Figure 3 This is a schematic diagram of the structure of the abutment plate of this utility model; Figure 4 This is a cross-sectional view of the present invention BB; Figure 5 This is a structural schematic diagram of the fixing plate of this utility model; Figure 6 This is a schematic diagram of the structure of the motherboard of this utility model; Figure 7 This is a schematic diagram of the upper reinforcing plate of this utility model; Figure 8 This is a schematic diagram of the reinforcing plate in this utility model; Figure 9 This is a schematic diagram of the structure of the lower reinforcing plate of this utility model; Figure 10 This is a schematic diagram of the structure of the first plate of this utility model; Figure 11 This is a schematic diagram of the structure of the second plate of this utility model; Figure 12 This is a structural schematic diagram of the first reinforcing plate of this utility model; Figure 13 This is a schematic diagram of the structure of the second reinforcing plate of this utility model; Figure 14 This is an installation diagram of this utility model; The attached diagram is labeled as follows: 1. Anchor block body; 2. Steel strand; 11. First through hole; 12. Fixing plate; 13. Abutment plate; 14. Connecting plate; 131. Second through hole; 141. Main plate; 142. Reinforcing plate; 143. Secondary plate; 144. Strengthening plate; 1421. Upper reinforcing plate; 1422. Middle reinforcing plate; 1423. Lower reinforcing plate; 1431. First plate; 1432. Second plate; 1441. First reinforcing plate; 1442. Second reinforcing plate. Detailed Implementation

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-14As shown, an axial correction anchor block device for V-shaped pier prestressing tensioning includes an anchor block body 1. The anchor block body 1 has a first through hole 11 in the middle. A steel strand 2 that can connect the V-shaped pier and the anchor block body 1 is installed in the first through hole 11. The anchor block body 1 includes a fixing plate 12 and an abutment plate 13. The fixing plate 12 and the abutment plate 13 are connected by a plurality of connecting plates 14. The fixing plate 12 is vertically arranged. The abutment plate 13 abuts against the side of the V-shaped pier and is arranged at an angle to the horizontal plane. The first through hole 11 horizontally penetrates the fixing plate 12 and the abutment plate 13.

[0022] The abutment plate 13 is an arc-shaped panel, and the angle between the abutment plate 13 and the horizontal plane is 20°-80°. The abutment plate 13 has several second through holes 131 around its perimeter for easy hoisting or connection.

[0023] Specifically, the abutment plate 13 of the anchor block body 1 can abut against the side of the V-shaped pier, and the climbing cone can connect the anchor block body 1 with the side of the V-shaped pier through the second through hole 131 of the abutment plate 13. Furthermore, after the two anchor block bodies 1 are symmetrically arranged and fixed on the V-shaped pier, the steel strand 2 passes through the V-shaped pier and the horizontally arranged first through hole 11 to tension the V-shaped pier.

[0024] The anchor block device of this utility model can fit the side of the V-shaped pier, thereby making the axial deviation between the steel strand 2 passing through the first through hole 11 and the anchor block body 1 small, eliminating the need for a complex steering mechanism and making it less likely to generate lateral force.

[0025] Furthermore, the specific structures of the fixing plate 12 and the abutment plate 13 are described in detail.

[0026] The fixing plate 12 is located in the center of the abutment plate 13. The length and width of the fixing plate 12 are at least 1 / 2 of the length and width of the abutment plate 13. The appropriate position and size facilitate the positioning and installation between the fixing plate 12 and the abutment plate 13.

[0027] The diameter of the first through hole 11 is at least half the length and width of the fixing plate 12. The first through hole 11 is relatively large to facilitate the passage and tensioning of the steel strand 2.

[0028] Furthermore, the specific structure of the connecting plate 14 will be described in detail.

[0029] The connecting plate 14 includes a main board 141, which consists of two main boards 141 arranged symmetrically on both sides of the first through hole 11. The main board 141 connects to the fixing plate 12 and the abutment plate 13, and is arranged perpendicular to the fixing plate 12 and the abutment plate 13.

[0030] The connecting plate 14 includes a reinforcing plate 142, which is located between the fixing plate 12 and the abutment plate 13 and is vertically fixed to the main plate 141. The reinforcing plate 142 includes an upper reinforcing plate 1421, a middle reinforcing plate 1422 and a lower reinforcing plate 1423 arranged sequentially from top to bottom. The upper reinforcing plate 1421, the middle reinforcing plate 1422 and the lower reinforcing plate 1423 have different sizes due to the change in the distance between the fixing plate 12 and the abutment plate 13. The upper reinforcing plate 1421, the middle reinforcing plate 1422 and the lower reinforcing plate 1423 are used to enhance the strength of the anchor block body 1.

[0031] The connecting plate 14 includes a secondary plate 143, which includes a primary plate 1431 and a secondary plate 1432. The primary plate 1431 and the secondary plate 1432 are located on the upper and lower sides of the first through hole 11. The primary plate 1431 and the secondary plate 1432 are connected to the left and right symmetrical primary plate 141. The primary plate 1431 and the secondary plate 1432 have different dimensions due to the change in the distance between the fixing plate 12 and the abutment plate 13.

[0032] The connecting plate 14 includes a reinforcing plate 144, which includes a first reinforcing plate 1441 and a second reinforcing plate 1442. The first reinforcing plate 1441 connects the first plate 1431 and the abutment plate 13, and the second reinforcing plate 1442 connects the second plate 1432 and the abutment plate 13. The first reinforcing plate 1441 and the second reinforcing plate 1442 are arranged parallel to the main plate 141. The first reinforcing plate 1441 and the second reinforcing plate 1442 have different dimensions due to the change in the distance between the fixing plate 12 and the abutment plate 13.

[0033] The main board 141, the reinforcing plate 142, the secondary plate 143, and the reinforcement plate 144 are welded together.

[0034] Specifically, the main plate 141 and the secondary plate 143 are the main connecting components for the fixing plate 12 and the abutment plate 13. At the same time, the main plate 141 and the secondary plate 143 surrounding the first through hole 11 not only position the first through hole 1, but also prevent other external substances from entering the first through hole 11 and thus affecting the tensioning effect of the steel strand 2. The reinforcing plate 142 is used to reinforce the three components of the main plate 141, the fixing plate 12, and the abutment plate 13, and the reinforcing plate 144 is used to reinforce the three components of the secondary plate 143, the fixing plate 12, and the abutment plate 13, further improving the strength of the anchor block body 1 and enabling the anchor block device to achieve a better effect.

[0035] This utility model, by setting up a main plate 141, a reinforcing plate 142, a secondary plate 143, and a reinforcing plate 144, on the one hand, connects and limits the position of the fixing plate 12 and the abutment plate 13 to ensure that the anchor block body 1 can always abut against the side of the V-shaped pier, thereby ensuring that the axis of the anchor block body 1 is basically consistent with the axis of the steel strand 2, avoiding the formation of a spatial angle between the axis of the anchor block body 1 and the axis of the steel strand 2 during prestressing tension, which would generate lateral force and thus increase the accident rate; on the other hand, it protects the inside of the first through hole 11, also enhances the strength of the anchor block body 1, and improves the service life of the anchor block body 1.

[0036] In one embodiment of this utility model, the pier inclination angle is 69°, the steel strand specification is 15-Φs15.2 steel strand, the designed tension force is 1600kN, and the tensioning is performed through the anchor block body 1 of this utility model. The tensioning time of a single strand is shortened to 45 minutes (105 minutes in the traditional process), the anchor retraction is ≤4mm (the standard allowable value is 6mm), ultrasonic testing shows no cracking of the concrete, the effective tensioning efficiency coefficient is increased from 0.82 to 0.96, the tensioning qualification rate is increased from 83% to 98%, the prestress loss is reduced by 15%, the amount of steel strand used is saved, and the overall construction cost is reduced.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0038] Although this document frequently uses reference numerals from the figures: 1. Anchor block body, 2. Steel strand, 11. First through hole, 12. Fixing plate, 13. Abutment plate, 14. Connecting plate, 131. Second through hole, 141. Main plate, 142. Reinforcing plate, 143. Secondary plate, 144. Strengthening plate, 1421. Upper reinforcing plate, 1422. Middle reinforcing plate, 1423. Lower reinforcing plate, 1431. First plate, 1432. Second plate, 1441. First strengthening plate, 1442. Second strengthening plate, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any kind of additional limitation would contradict the spirit of this utility model.

Claims

1. An axis-correcting anchor block device for V-shaped pier prestressing tensioning, characterized in that, The system includes an anchor block body (1), which has a first through hole (11) in the middle. A steel strand (2) that can connect the V-shaped pier and the anchor block body (1) is installed in the first through hole (11). The anchor block body (1) includes a fixing plate (12) and an abutment plate (13). The fixing plate (12) and the abutment plate (13) are connected by several connecting plates (14). The fixing plate (12) is vertically arranged, and the abutment plate (13) abuts against the side of the V-shaped pier and is set at an angle to the horizontal plane. The first through hole (11) horizontally penetrates the fixing plate (12) and the abutment plate (13).

2. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 1, characterized in that, The fixing plate (12) is located in the center of the abutment plate (13), and the length and width of the fixing plate (12) are at least 1 / 2 of the length and width of the abutment plate (13).

3. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 1, characterized in that, The abutment plate (13) is an arc panel, and the abutment plate (13) has several second through holes (131) around its perimeter for easy hoisting or connection.

4. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 3, characterized in that, The angle between the abutment plate (13) and the horizontal plane is 20°-80°.

5. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 1, characterized in that, The diameter of the first through hole (11) is at least half the length and width of the fixing plate (12).

6. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 1, characterized in that, The connecting plate (14) includes a main board (141), which consists of two main boards (141) arranged symmetrically on both sides of the first through hole (11). The main board (141) connects the fixing plate (12) and the abutment plate (13). The main board (141) is arranged perpendicular to the fixing plate (12) and the abutment plate (13).

7. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 6, characterized in that, The connecting plate (14) includes a reinforcing plate (142), which is located between the fixing plate (12) and the abutment plate (13) and is vertically fixed on the main plate (141). The reinforcing plate (142) includes an upper reinforcing plate (1421), a middle reinforcing plate (1422) and a lower reinforcing plate (1423) arranged sequentially from top to bottom.

8. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 6, characterized in that, The connecting plate (14) includes a secondary plate (143), which includes a first plate (1431) and a second plate (1432). The first plate (1431) and the second plate (1432) are located on the upper and lower sides of the first through hole (11). The first plate (1431) and the second plate (1432) are connected to the left and right symmetrical main plate (141).

9. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 8, characterized in that, The connecting plate (14) includes a reinforcing plate (144), which includes a first reinforcing plate (1441) and a second reinforcing plate (1442). The first reinforcing plate (1441) connects the first plate (1431) and the abutment plate (13), and the second reinforcing plate (1442) connects the second plate (1432) and the abutment plate (13). The first reinforcing plate (1441) and the second reinforcing plate (1442) are arranged parallel to the main plate (141).

10. The axial correction anchor block device for V-shaped pier prestressing tensioning according to claim 6, characterized in that, The main board (141), reinforcing plate (142), secondary plate (143) and reinforcement plate (144) are welded together.

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