Tensioning and anchoring device with bonded prestress in post-tensioning method

Abstract

The utility model relates to a post-tensioning method bonded prestress tensioning anchoring device, which belongs to the technical field of tensioning anchorage device installation, and comprises an anchorage device, an installation cylinder, a working clamping piece, a pressing plate and a guide cylinder, the installation cylinder is sleeved outside the anchorage device, the guide cylinder is fixed inside the installation cylinder, the pressing plate and an anchor backing plate are matched with the guide cylinder and positioned inside the guide cylinder, and the working clamping piece is arranged on the working clamping piece. A connecting ring is arranged on the outer side of the pressing plate, the connecting ring is located outside the mounting cylinder, and the connecting ring and the pressing plate are fixedly connected through a connecting column. Through the arrangement of the guide cylinder, the pressing plate and the mounting cylinder, the guide cylinder can be clamped outside the anchor backing plate, the guide cylinder plays a role in guiding the pressing plate, and under the guiding and limiting of the guide cylinder, the pressing plate is extruded to apply horizontal pressure to a plurality of working clamping pieces at the same time, so that the working clamping pieces move synchronously; the working clamping pieces are knocked into the wedge-shaped holes of the anchor plate, so that the working clamping pieces lock the prestressed tendons, the pressing degrees of the anchoring working clamping pieces are the same, and the installation efficiency of the anchorage device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tensioning anchorage device installation technical field, concretely relates to a post tensioning method has the bonding prestressed tensioning anchorage device. BACKGROUND

[0002] The post tensioning method refers to first pouring cement concrete, and after reaching more than 75% of design strength, tensioning prestressed steel to form the construction method of prestressed concrete member, this method is widely used in bridge, large span building, and the bonding prestressed concrete is generally after reaching more than 75% of design strength, tensioning steel bar, and its main tensioning procedure is: burying pipe and making hole-pouring concrete-pulling pipe-maintaining and wearing steel bar tensioning-anchoring-grouting, and its force transmission path is relying on anchorage device to prevent the elastic rebound of steel bar, so that the cross section concrete obtains precompression stress, this method makes steel bar and concrete into a whole, and is called bonding prestressed concrete, and anchoring is a commonly used anchoring method in the construction of bonding prestressed concrete structure.

[0003] The bonding prestressed concrete needs to use tensioning anchorage device when being made, and the existing tensioning anchorage device finds that the installation of anchoring work clamping piece is needed before tensioning prestressed steel bar, the anchoring work clamping piece is in place, and the anchoring work clamping piece needs to be knocked tight, the traditional installation mode adopts iron hammer to knock, and ordinary solid iron hammer can only knock one to two pieces of anchoring work clamping piece at a time, so that the anchoring work clamping pieces are uneven, the installation efficiency is low, meanwhile, the work clamping piece at the inner prestressed steel bar is inconvenient to apply knocking force, the knocking tight effect of the work clamping piece is not ideal, thereby leading to poor practicality. CONTENT OF UTILITY MODEL

[0004] Therefore, the utility model aims at providing a post tensioning method has the bonding prestressed tensioning anchorage device, effectively solve the traditional installation mode adopts iron hammer to knock, ordinary solid iron hammer can only knock one to two pieces of anchoring work clamping piece at a time, so that the anchoring work clamping pieces are uneven, the installation efficiency is low, meanwhile, the work clamping piece at the inner prestressed steel bar is inconvenient to apply knocking force, the knocking tight effect of the work clamping piece is not ideal, thereby leading to poor practicality Problem.

[0005] To realize the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: a post tensioning method has the bonding prestressed tensioning anchorage device, comprising: anchorage device, work clamping piece, installation cylinder, pressing plate and guide cylinder;

[0006] The anchorage device comprises anchor pad, anchor plate and work clamping piece;

[0007] The anchor pad is fixedly installed at the reserved hole at both sides of the prestressed concrete body, and a through hole one matched with the prestressed steel bar is formed in the outer surface of the anchor pad.

[0008] The anchor plate is fixedly connected to the outside of the anchor pad, and a wedge-shaped hole corresponding to the through hole is formed in the outer surface of the anchor plate;

[0009] The working clamping piece is matched with the wedge-shaped hole and is sleeved in the wedge-shaped hole, and a through hole two matched with the prestressed tendon is formed in the working clamping piece;

[0010] The pressing plate is arranged outside the working clamping piece and is in contact with the end of the working clamping piece, and a through hole three matched with the prestressed tendon is formed in the outer surface of the pressing plate;

[0011] The prestressed tendon passes through the reserved hole, the through hole one, the through hole two and the through hole three in sequence;

[0012] The mounting cylinder is sleeved outside the anchor device;

[0013] The guide cylinder is fixed in the mounting cylinder, and the pressing plate and the anchor pad are matched with the guide cylinder and are located in the guide cylinder, and the pressing plate can slide transversely in the guide cylinder.

[0014] Further, the inlet of the guide cylinder is provided with an inclined groove.

[0015] Further, the outer side of the pressing plate is provided with a connecting ring, the prestressed tendon passes through the connecting ring, and the connecting ring and the pressing plate are fixedly connected through a connecting column.

[0016] Further, the connecting ring is fixedly connected with a knocking plate on both sides.

[0017] Further, the knocking plate and the connecting ring are fixedly connected with a reinforcing rib.

[0018] The beneficial effects of the above technical scheme are:

[0019] The guide cylinder, the pressing plate and the mounting cylinder are arranged, the guide cylinder is clamped outside the anchor pad, the guide cylinder plays a guiding role on the pressing plate, under the guiding and limiting of the guide cylinder, the extrusion of the pressing plate can simultaneously exert horizontal pressure on multiple working clamping pieces, the synchronous movement of the working clamping pieces is realized, the working clamping pieces are knocked into the wedge-shaped hole of the anchor plate, the working clamping pieces are locked with the prestressed tendon, the pressing degree of the working clamping pieces is the same, the knocking effect on the working clamping pieces is ideal, the installation efficiency of the anchor device is improved, the connecting ring, the connecting column and the knocking plate are designed, the knocking plate can be knocked outside the mounting cylinder, the knocking force is transmitted to the pressing plate through the connecting column and the connecting ring, the knocking force is easily applied, the reinforcing rib is fixedly connected between the knocking plate and the connecting ring, and the connection stability of the knocking plate and the connecting ring is improved through the reinforcing rib. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is an installation schematic view of the utility model.

[0021] Fig. 2 is a schematic view of the utility model;

[0022] Fig. 3 is a schematic view of the utility model.

[0023] Reference signs: 1, prestressed concrete main body; 2, anchor pad; 3, prestressed tendon; 4, anchor plate; 5, pressing plate; 6, installation cylinder; 7, working clamp piece; 8, connecting column; 9, connecting ring; 10, knocking plate; 11, guide cylinder; 12, inclined chute; 13, reinforcing rib. DETAILED DESCRIPTION

[0024] The utility model will be described in further detail below in combination with the drawings and specific embodiments:

[0025] Referring to Figs. 1-3 A post-tensioning method bonded prestressed tensioning and anchoring device, including anchor, installation cylinder 6, working clamp piece 7, pressing plate 5 and guide cylinder 11, anchor is the prior art finished product, anchor includes anchor pad 2, anchor plate 4, working clamp piece 7 and the spiral rib setting in prestressed concrete main body 1, spiral rib both ends are connected with anchor pad 2 and prestressed tendon 3, this device is no longer described.

[0026] Anchor pad 2 is fixedly installed at the reserved hole outside prestressed concrete main body 1 by bolt, prestressed tendon 3 is arranged in the reserved hole, the outer surface of anchor pad 2 is provided with the through hole one matched with prestressed tendon 3, the both ends of prestressed tendon 3 pass through the through hole one, anchor plate 4 is fixedly connected to the outside of anchor pad 2, the outer surface of anchor plate 4 is provided with the wedge-shaped hole corresponding with the through hole one, working clamp piece 7 is matched with the wedge-shaped hole and is sleeved in the wedge-shaped hole, working clamp piece 7 is the prior art standard piece, and the whole is sleeve-shaped, the inside of working clamp piece 7 is provided with the through hole two matched with prestressed tendon 3, prestressed tendon 3 passes through the through hole two, by working clamp piece 7 and the wedge-shaped hole cooperation, working clamp piece 7 can be clamped prestressed tendon 3, and the fixed effect is played.

[0027] The pressing plate 5 is arranged outside the working clamp 7, the outer surface of the pressing plate 5 is provided with a through hole three matched with the prestressed tendon 3, the two ends of the prestressed tendon 3 pass through the through hole three, the pressing plate 5 is in contact with the end of the working clamp 7, the mounting cylinder 6 is sleeved outside the anchorage device, the guide cylinder 11 is fixed inside the mounting cylinder 6, the pressing plate 5 and the anchor pad 2 are matched with the guide cylinder 11 and are located inside the guide cylinder 11, the inlet of the guide cylinder 11 is provided with an inclined groove 12, the guide cylinder 11 is clamped outside the anchor pad 2 through the arranged inclined groove 12, the fixed anchor pad 2 can position the guide cylinder 11, preventing the guide cylinder 11 from moving along the radial direction, the pressing plate 5 can slide horizontally in the guide cylinder 11, under the guidance and limiting of the guide cylinder 11, the extrusion of the pressing plate 5 can simultaneously apply horizontal pressure to multiple working clamps 7, the synchronous movement of the working clamps 7, the pressing of the working clamps into the wedge-shaped holes in the anchor plate 2, the locking of the working clamps to the prestressed tendon, the same pressing degree of the anchoring working clamps 7 and the improved installation efficiency of the anchorage device.

[0028] The outer side of the pressing plate 5 is provided with a connecting ring 9, the connecting ring 9 is located outside the mounting cylinder 6, the prestressed tendon 3 passes through the connecting ring 9, the connecting ring 9 and the pressing plate 5 are fixedly connected through the connecting column 8, the two sides of the connecting ring 9 are fixedly connected with a knocking plate 10, through the design of the connecting ring 9, the connecting column 8 and the knocking plate 10, the knocking plate 10 can be knocked outside the mounting cylinder 6, the knocking force can be transmitted to the pressing plate 5 through the connecting column 8 and the connecting ring 9, the knocking force is easily applied, the knocking plate 10 and the connecting ring 9 are fixedly connected with a reinforcing rib 13, through the arrangement of the reinforcing rib 13, the connection stability of the knocking plate 10 and the connecting ring 9 can be improved.

[0029] Working principle: firstly, the prestressed tendon 3 is arranged in the reserved hole of the prestressed concrete main body 1, the two sides of the prestressed tendon 3 are exposed outside the reserved hole, the prestressed tendon 3 passes through the through hole one and the through hole two of the anchorage device, then the anchorage device is placed at the reserved hole, the anchor pad 2 is fixedly connected to the outer side of the prestressed concrete main body 1 through bolts, the preliminary fixation of the anchorage device is completed, then the prestressed tendon 3 passes through the through hole three of the pressing plate 5 in the mounting cylinder 6, the mounting cylinder 6 is pressed on the side wall of the prestressed concrete main body 1, so that the guide cylinder 11 is clamped outside the anchor pad 2, then the two prestressed tendons 3 are pulled to be taut through the external jack, one hand applies pressing force to the mounting cylinder 6 towards the prestressed concrete main body 1, keeping the mounting cylinder 6 stationary, the other hand knocks the knocking plate 10, under the action of the pressing plate 5, the working clamp 7 can be pressed into the wedge-shaped hole in the anchor plate 4, so that the working clamp 7 locks the prestressed tendon 3, after locking, the mounting cylinder 6 and the guide cylinder 11 can be taken out.

Claims

1. A post-tensioned bonded prestressed tensioning anchorage device, characterized by, Include: Anchorage, working clamp (7), installation cylinder (6), pressing plate (5) and guide cylinder (11); The anchorage comprises anchor pad (2), anchor plate (4), working clamp (7); The anchor pad (2) is fixedly installed at the reserved hole of the prestressed concrete body (1), and the outer surface of the anchor pad (2) is provided with a through hole one matched with the prestressed tendon (3); The anchor plate (4) is fixedly connected to the outer side of the anchor pad (2), and the outer surface of the anchor plate (4) is provided with a wedge-shaped hole corresponding to the through hole one; The working clamp (7) is matched with the wedge-shaped hole and is sleeved in the wedge-shaped hole, and the working clamp (7) is provided with a through hole two matched with the prestressed tendon (3) in the inside; The pressing plate (5) is arranged outside the working clamp (7) and in contact with the end of the working clamp (7), and the outer surface of the pressing plate (5) is provided with a through hole three matched with the prestressed tendon (3); The prestressed tendon (3) passes through the reserved hole, the through hole one, the through hole two and the through hole three in sequence; The installation cylinder (6) is sleeved outside the anchorage; The guide cylinder (11) is fixed in the installation cylinder (6), the pressing plate (5) and the anchor pad (2) are matched with the guide cylinder (11) and located in the guide cylinder (11), and the pressing plate (5) can slide horizontally in the guide cylinder (11).

2. A post-tensioning bonded prestressed tensioning and anchoring device according to claim 1, characterized in that: The inlet of the guide cylinder (11) is provided with an inclined groove (12).

3. A post-tensioning bonded pre-stressed tensioning and anchoring device as claimed in claim 1, wherein: The outer side of the pressing plate (5) is provided with a connecting ring (9), the prestressed tendon (3) passes through the connecting ring (9), and the connecting ring (9) and the pressing plate (5) are fixedly connected through the connecting column (8).

4. A post-tensioning bonded pre-stressed tensioning and anchoring device as claimed in claim 3, wherein: The connecting ring (9) is fixedly connected with the knocking plate (10) on both sides.

5. A post-tensioning bonded pre-stressed tensioning and anchoring device as claimed in claim 4, wherein: The knocking plate (10) and the connecting ring (9) are fixedly connected with the reinforcing rib (13).

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