Positioning elevation control device for full-bonded prestressed tendons

Abstract

The utility model discloses a full-bonding prestressed tendon positioning elevation control device which comprises a cushion layer, a waterproof layer is arranged at the top of the cushion layer, a round water-permeable hole communicated with the cushion layer is formed in the cushion layer, a prestressed tendon penetrates through the round water-permeable hole, a positioning frame is fixedly connected to the inner wall of the round water-permeable hole, and the inner wall of the positioning frame is fixedly connected with a steel wire rope. A waterproof rubber sleeve is fixedly connected to the cushion layer, the prestressed steel bar penetrates through the waterproof rubber sleeve, a fixing ring is fixedly connected to the outer wall of the prestressed steel bar, a sleeve is connected to the outer wall of the prestressed steel bar, the sleeve is fixedly connected with the cushion layer, and a spiral bar is fixedly connected to the outer wall of the prestressed steel bar. The outer walls of the prestressed steel bars are in threaded connection with matched nuts. According to the device, the thickness of a mortar protection layer can be guaranteed, it is guaranteed that deviation does not occur in the construction process, and adjustment is easy in the pouring process; the elevation is well controlled by adjusting the height of the triangular support, and the top elevation is ensured to be consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a fully bonded prestressed tendon positioning and elevation control device. Background Art

[0002] The construction specifications for anchor rods require that the end of the anchor rod be ≥200mm away from the bottom of the hole. The on-site practice is to use steel bars to support the hole horizontally to ensure the bottom size.

[0003] Since the drill hole size is much larger than the diameter of the steel bar, the design requires a positioning frame to protect the thickness of the mortar. However, since the top cannot be supported and the steel bar is fixed in a relatively simple way with wire ties, it slides downward due to the downward gravity and the elevation above the raft cannot be guaranteed. To solve the above problem, this application proposes a fully-bonded prestressed tendon positioning and elevation control device. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a fully bonded prestressed tendon positioning and elevation control device is proposed, which can not only ensure the thickness of the mortar protective layer, but also ensure that no deviation occurs during construction, and the pouring process is easy to adjust; by adjusting the height of the triangular bracket, the elevation is controlled to ensure that the top elevation is consistent.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fully bonded prestressed tendon positioning and elevation control device comprises a cushion layer, a waterproof layer is provided on the top of the cushion layer, a circular water-permeable hole connected thereto is provided on the cushion layer, a prestressed steel bar is penetrated through the circular water-permeable hole, a positioning frame is fixedly connected to the inner wall of the circular water-permeable hole, a waterproof rubber sleeve is fixedly connected to the cushion layer, the prestressed steel bar penetrates the waterproof rubber sleeve, a fixing ring is fixedly connected to the outer wall of the prestressed steel bar, a sleeve is connected to the outer wall of the prestressed steel bar, the sleeve is fixedly connected to the cushion layer, a spiral tendon is fixedly connected to the outer wall of the prestressed steel bar, and a matching nut is threadedly connected to the outer wall of the prestressed steel bar.

[0007] Preferably, the prestressed steel bars are arranged through the positioning frame.

[0008] Preferably, three brackets are fixedly connected to the outer wall of the sleeve, the three brackets are distributed at equal intervals, and the three brackets are fixedly connected to the cushion layer.

[0009] Preferably, a through hole is penetrated through the matching nut, an outer wall of the prestressed steel bar is provided with an external thread, and an inner wall of the through hole is provided with an internal thread matching the external thread.

[0010] Preferably, the diameter of the circular water-permeable hole is 10MM.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. Effectively control the center position of the steel bars to ensure the thickness of the mortar protective layer.

[0013] 2. Ensure the distance between the end of the prestressed steel bar and the bottom of the hole.

[0014] 3. Ensure the consistency of the elevation of the top of the prestressed steel bars.

[0015] In summary, this device can not only ensure the thickness of the mortar protective layer, but also ensure that there is no deviation during construction, and the pouring process is easy to adjust; by adjusting the height of the triangular bracket, the elevation is controlled to ensure that the top elevation is consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a structural schematic diagram of a fully bonded prestressed tendon positioning and elevation control device.

[0017] In the figure: 1 cushion layer, 2 waterproof layer, 3 circular water-permeable holes, 4 prestressed steel bars, 5 positioning frames, 6 waterproof rubber sleeves, 7 fixing rings, 8 sleeves, 9 spiral bars, and 10 matching nuts. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1 A fully bonded prestressed tendon positioning and elevation control device includes a cushion layer 1, below the cushion layer 1 is a soil foundation pit, a waterproof layer 2 is provided on the top of the cushion layer 1, and a circular water permeable hole 3 connected to the cushion layer 1 is provided on the cushion layer 1. The diameter of the circular water permeable hole 3 is 10MM, and the circular water permeable hole 3 is set on the soil foundation pit.

[0020] A prestressed steel bar 4 is penetrated through the circular water-permeable hole 3, a positioning frame 5 is fixedly connected to the inner wall of the circular water-permeable hole 3, the prestressed steel bar 4 penetrates the positioning frame 5, a waterproof rubber sleeve 6 is fixedly connected to the cushion layer 1, the prestressed steel bar 4 penetrates the waterproof rubber sleeve 6, a fixing ring 7 is fixedly connected to the outer wall of the prestressed steel bar 4, a sleeve 8 is connected to the outer wall of the prestressed steel bar 4, the sleeve 8 is fixedly connected to the cushion layer 1, and three brackets are fixedly connected to the outer wall of the sleeve 8. The lengths of the three brackets can be pre-cut and adjusted, the three brackets are distributed at equal intervals, and the three brackets are all fixedly connected to the cushion layer 1. By adjusting the height of the triangular bracket, the elevation is controlled to ensure that the top elevation is consistent.

[0021] The outer wall of the prestressed steel bar 4 is fixedly connected with a spiral rib 9, the outer wall of the prestressed steel bar 4 is threadedly connected with a matching nut 10, a through hole is penetrated through the matching nut 10, the outer wall of the prestressed steel bar 4 is provided with an external thread, and the inner wall of the through hole is provided with an internal thread matching the external thread.

[0022] In the utility model, the device is used for effective drainage in foundation pits such as sump pits and drop plates. The material is stainless steel, a rectangle with a length and width of 1000mm, a height of 30mm, a width of 50mm, and circular water-permeable holes with a diameter of 10mm are arranged around it, so that the water in the foundation pit can effectively enter the drainage trough and flow into the rectangular mouth of the external water pumping port. The accumulated water is discharged by a self-priming pump outside to ensure the normal construction of the waterproof membrane.

[0023] The bracket is positioned in the center: the position of the prestressed steel bar 4 can be fixed by the bracket to ensure the thickness of the mortar protective layer.

[0024] Elevation control: The elevation is controlled by the matching nut 10 on the bracket. After it is screwed to the designed elevation, the raft slab is poured to ensure consistent elevation.

Claims

1. A fully bonded prestressed tendon positioning and elevation control device, comprising a cushion layer (1), characterized in that: A waterproof layer (2) is provided on the top of the cushion layer (1), and a circular water-permeable hole (3) communicating with the cushion layer (1) is provided on the cushion layer (1), a prestressed steel bar (4) is penetrated through the circular water-permeable hole (3), a positioning frame (5) is fixedly connected to the inner wall of the circular water-permeable hole (3), a waterproof rubber sleeve (6) is fixedly connected to the cushion layer (1), the prestressed steel bar (4) penetrates the waterproof rubber sleeve (6), a fixing ring (7) is fixedly connected to the outer wall of the prestressed steel bar (4), a sleeve (8) is connected to the outer wall of the prestressed steel bar (4), and the sleeve (8) is fixedly connected to the cushion layer (1), a spiral rib (9) is fixedly connected to the outer wall of the prestressed steel bar (4), and a matching nut (10) is threadedly connected to the outer wall of the prestressed steel bar (4).

2. A fully bonded prestressed tendon positioning and elevation control device according to claim 1, characterized in that: The prestressed steel bars (4) are arranged to penetrate the positioning frame (5).

3. A fully bonded prestressed tendon positioning and elevation control device according to claim 1, characterized in that: Three brackets are fixedly connected to the outer wall of the sleeve (8), the three brackets are distributed at equal intervals, and the three brackets are all fixedly connected to the cushion layer (1).

4. The fully bonded prestressed tendon positioning and elevation control device according to claim 1, characterized in that: The matching nut (10) is provided with a through hole, the outer wall of the prestressed steel bar (4) is provided with an external thread, and the inner wall of the through hole is provided with an internal thread matching the external thread.

5. The fully bonded prestressed tendon positioning and elevation control device according to claim 1 is characterized in that: The diameter of the circular water-permeable hole (3) is 10 mm.

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