Pressure type prestress pre-tensioning anchor rod structure

Abstract

The utility model discloses a pressure type prestress pre-tensioning anchor rod structure, and relates to the technical field of building structures. Comprising the following steps: tensioning anchor rods; the pre-tensioning positioning anchorage device, the pre-tensioning locking anchorage device and the anchor rod sleeve are arranged on the tensioning anchor rod. By optimizing the structure of the pressure type prestress pre-tensioning anchor rod, the pressure type prestress pre-tensioning anchor rod can be constructed through a pre-tensioning method in the using process, tensioning of a parallel construction tensioning anchor rod and parallel construction of a foundation slab can be achieved in the anchor rod construction process, and the construction efficiency is effectively improved; the upper end of the tensioning anchor rod does not penetrate through the foundation slab, so that the later construction of a concrete anchor sealing layer can be reduced, the construction procedures are reduced, and the construction efficiency is improved; the problems that a traditional pressure type pre-stressed anchor rod is subjected to post-tensioning flow construction, the construction procedure is complex, and the construction period is long are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building structure, specifically relates to a pressure type prestressed pre-tensioned anchor rod structure. BACKGROUND

[0002] In the building construction process, the prestressed anchor rod is widely used in the slope reinforcement and the floor slab anti-floating process due to its good reinforcement effect and low cost. Through the use of the prestressed anchor rod, the floor structure can be closely connected with the underlying foundation structure to balance the buoyancy of underground water, thereby avoiding the building floor floating caused by the buoyancy of underground water and ensuring the use and structural safety of the building structure.

[0003] At present, the prestressed anchor rod applied to the anti-floating use mainly includes the uplift anchor rod, the counterweight is installed at the lower end of the uplift anchor rod, and the anchor rod is cast in the underlying structure of the floor, so that the anchor rod is connected with the floor, and then the anchor rod and the floor form an integral whole to prevent the floor from floating. The pressure type prestressed anchor rod is an anchor rod structure which needs to be locked in the structure and the anchor rod anchoring body is subjected to pressure throughout the process. During construction, the traditional pressure type prestressed anchor rod generally adopts the post-tensioning method for tensioning, that is, after the foundation slab is poured, the prestressed tendon anchor and the anchoring tendon are installed outside the foundation slab to tension the prestressed anchor rod, and after tensioning is completed, the prestressed steel bar is cut off, and the concrete layer is poured on the foundation slab to seal the anchor, which needs to wait for the tensioning force of the prestressed anchor rod to be stable and rechecked to be qualified before pouring the concrete sealing layer. In the construction process, the construction process of flow construction cannot realize rapid tensioning of the prestressed anchor rod and parallel construction in the construction process, the process is complex, the construction period is long, and the construction efficiency is seriously affected.

[0004] Based on this, the utility model provides a novel pressure type prestressed anchor rod to solve the problems existing in the prior art. UTILITY MODEL CONTENTS

[0005] Therefore, the main purpose of the utility model is to provide a pressure type prestressed pre-tensioned anchor rod structure to solve the problems of the traditional pressure type prestressed anchor rod using the post-tensioning method flow construction, complex construction process, and long construction period.

[0006] To achieve the above purpose, the basic concept of the technical scheme adopted by the utility model is:

[0007] A pressure type prestressed pre-tensioned anchor rod structure comprises:

[0008] a tensioning anchor rod;

[0009] and a tensioning device arranged on the tensioning anchor rod.

[0010] The pre-tension positioning anchor is arranged at the upper end anchoring end of the tensioning anchor rod and is located in the foundation bottom plate.

[0011] The pre-tension locking anchor is arranged on the tensioning anchor rod below the pre-tension positioning anchor, is located above the waterproof protection layer and is matched with the anchor rod sleeve.

[0012] The anchor rod sleeve is sleeved outside the lower end of the tensioning anchor rod and is matched with the drill hole.

[0013] In a preferred embodiment, the upper end anchoring end of the tensioning anchor rod does not penetrate the foundation bottom plate.

[0014] In a preferred embodiment, the anchor rod sleeve is sleeved outside the lower end of the tensioning anchor rod, and non-solidified asphalt is poured in the gap between the anchor rod sleeve and the tensioning anchor rod.

[0015] In a preferred embodiment, the outer side of the anchor rod sleeve is further segmented and arranged with a steel bar positioning support matched with a limiting convex ring arranged outside the anchor rod sleeve.

[0016] In a preferred embodiment, a waterproof rubber ring is further arranged at the upper end opening of the anchor rod sleeve.

[0017] In a preferred embodiment, the pre-tension locking anchor comprises:

[0018] The first anti-floating plate is located on the upper surface of the waterproof protection layer, and the lower surface of the first anti-floating plate is matched with the top of the anchor rod sleeve.

[0019] The anchor rod locking piece is threadedly connected with the tensioning anchor rod and is located on the upper surface of the first anti-floating plate.

[0020] In a preferred embodiment, the pre-tension positioning anchor comprises:

[0021] The lower adjusting anchor is threadedly connected below the second anti-floating plate.

[0022] The second anti-floating plate is movably sleeved on the tensioning anchor rod.

[0023] The upper adjusting anchor is threadedly connected on the tensioning anchor rod above the second anti-floating plate.

[0024] Compared with the prior art, the pressure type pre-tension anchor rod structure has the following beneficial effects:

[0025] 1. By optimizing the pressure type pre-tension anchor rod structure, the pressure type pre-tension anchor rod can be constructed by the pre-tension method during use, the tensioning of the tensioning anchor rod and the parallel construction of the foundation bottom plate can be realized during the anchor rod construction process, and the construction efficiency is effectively improved.

[0026] 2. By setting the upper end of the tension anchor rod not to penetrate the foundation bottom plate, the post-construction concrete anchor sealing layer can be reduced, the construction process is reduced, and the construction efficiency is improved; the problems of complex construction process and long construction period of the traditional pressure type prestressed anchor rod using the post-tensioning method are solved. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, a brief introduction will be given below to the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 is a use state diagram of the pressure type prestressed pre-tensioning anchor rod structure of the present application;

[0029] Figure 2 is a structure schematic diagram of the pressure type prestressed pre-tensioning anchor rod structure of the present application;

[0030] Figure 3 is a sectional view of the pressure type prestressed pre-tensioning anchor rod structure A-A of the present application;

[0031] Figure 4 is a structure schematic diagram of the pressure type prestressed pre-tensioning anchor rod structure of the present application; Figure 2 is a local enlarged view of A in the present application;

[0032] Figure 5 is a local enlarged view of B in the present application; Figure 2 is a local enlarged view of B in the present application;

[0033] Figure 6 is a structure schematic diagram of the limiting blade of the present application.

[0034]

MAIN COMPONENT SYMBOL DESCRIPTION

[0035] 1, tension anchor rod; 2, anchor rod sleeve; 3, waterproof rubber ring; 4, cement crystal; 5, first anti-floating plate; 6, anchor rod locking piece; 7, lower adjusting anchor; 8, upper adjusting anchor; 9, steel positioning support; 10, drill hole; 11, limiting convex ring; 12, grouting hole; 13, foundation bottom plate; 14, waterproof protective layer; 15, foundation cushion layer; 16, upper row of main reinforcement; 17, bent reinforcement; 18, lower row of main reinforcement; 19, second anti-floating plate; 20, waterproof rubber ring. DETAILED DESCRIPTION

[0036] The structure of the pressure type prestressed anchor rod will be further described in detail below in combination with the drawings and the embodiments of the present application.

[0037] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments of the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the use of the term "comprise" and / or "include" in the specification indicates the presence of features, steps, operations, devices, components and / or their combinations.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] For ease of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0041] The following will be described in combination with Figures 1 to 6 The pressure type prestressed pretension anchor rod structure of the present application is described.

[0042] In one embodiment, a pressure type prestressed pre-tension anchor rod structure is constructed by pre-tension method, comprising a non-bonding tension anchor rod 1, the upper end of the tension anchor rod 1 does not penetrate the foundation bottom plate 13, and a pre-tension positioning anchor, a pre-tension locking anchor and an anchor rod sleeve 2 are arranged on the tension anchor rod 1; the pre-tension positioning anchor is arranged at the upper end anchoring end of the tension anchor rod 1 and is located in the foundation bottom plate 13, and is used to fix the position of the upper end anchoring end of the tension anchor rod 1 in the foundation bottom plate 13 after pouring the foundation bottom plate 13, and simultaneously has the secondary tensioning effect on the tension anchor rod 1; the pre-tension locking anchor is arranged on the tension anchor rod 1 below the pre-tension positioning anchor and is located above the waterproof protective layer 14, and is matched with the tension anchor rod 1 and the anchor rod sleeve 2, and is used to lock the tension anchor rod 1 after tensioning before pouring the foundation bottom plate 13, and before locking, the steel bar binding process of the foundation bottom plate 13 can be constructed in parallel on the upper side of the waterproof protective layer 14, thereby improving the construction efficiency; the anchor rod sleeve 2 is sleeved on the outer side of the lower end of the tension anchor rod 1 and is matched with the drill hole 10 arranged on the waterproof protective layer 14, the foundation cushion layer 15 and the underlying structure, and in use, the anchor rod sleeve 2 is poured in the drill hole 10 by using concrete to fix the anchor rod sleeve 2.

[0043] In the above description, the foundation cushion layer 15 is located below the waterproof protective layer 14, a waterproof layer is arranged between the foundation cushion layer 15 and the waterproof protective layer 14, and the waterproof protective layer 14 is located below the foundation bottom plate 13. In the above description, after the pouring of the waterproof protective layer 14 is completed, the tensioning of the tension anchor rod 1 can be performed, the steel bar structure of the foundation bottom plate 13 is bound after tensioning, parallel construction is realized, and the construction efficiency is improved; meanwhile, after the positioning of the pre-tension positioning anchor is completed, the pre-tension positioning anchor can be bound with the internal steel bar of the foundation bottom plate 13 after the tensioning and locking of the tension anchor rod 1, the integrity of the structure is improved, the anchor rod structure does not protrude from the foundation cushion layer 15, the concrete anchor sealing layer in the later construction can be reduced, the construction process is reduced, and the construction efficiency is improved.

[0044] As shown in Figure 1 , Figure 2 and Figure 3 , the anchor rod sleeve 2 is a high-density polyethylene sleeve pipe, which is sleeved on the outer side of the lower end of the tension anchor rod 1 and mainly plays a protection role on the tension anchor rod 1 to reduce and avoid the erosion and corrosion of concrete on the tension anchor rod 1; and in order to ensure the integrity of the anchor rod sleeve 2 and the tension anchor rod 1, non-solidified asphalt is poured in the gap between the anchor rod sleeve 2 and the tension anchor rod 1 to connect the anchor rod sleeve 2 and the tension anchor rod 1 and ensure the integrity of the anchor rod sleeve 2 and the tension anchor rod 1.

[0045] As shown in Figure 2 , Figure 3 and Figure 6As shown, the outer side of the anchor rod sleeve 2 is also segmented with a steel bar positioning support 9, which is a support structure formed by welding steel bars, used to limit the position of the anchor rod sleeve 2 in the drill hole 10 through the steel bar positioning support 9, and cooperates with the limiting convex ring 11 arranged on the outer side of the anchor rod sleeve 2 to fix the position of the steel bar positioning support 9 on the anchor rod sleeve 2.

[0046] As shown in Figure 2 and Figure 5 , a waterproof rubber ring 20 is arranged at the upper end opening of the anchor rod sleeve 2, which seals the upper end opening of the anchor rod sleeve 2.

[0047] As shown in Figure 1 , Figure 2 and Figure 5 , the pre-tensioning locking anchor is located on the upper surface of the waterproof protection layer 14, including a first anti-floating plate 5 and an anchor rod locking piece 6, the first anti-floating plate 5 is laid on the upper surface of the waterproof protection layer 14, and the lower surface of the first anti-floating plate 5 cooperates with the top of the anchor rod sleeve 2 and is pressed on the upper end surface of the anchor rod sleeve 2 to limit the position of the anchor rod sleeve 2 and facilitate tensioning the anchor rod 1; the anchor rod locking piece 6 is threadedly connected with the tensioning anchor rod 1 and is located on the upper surface of the first anti-floating plate 5. After tensioning and stabilizing, the anchor rod locking piece 6 is tightened to lock the tensioning anchor rod 1, and the first anti-floating plate 5 is tightly pressed on the anchor rod sleeve 2 and the upper end of the waterproof protection layer 14, which can fix the position of the first anti-floating plate 5 under the action of the first anti-floating plate 5, facilitating tensioning the tensioning anchor rod 1.

[0048] As shown in Figure 1 , Figure 2 and Figure 4 , the pre-tensioning positioning anchor is arranged in the foundation bottom plate 13 and cooperates with the tensioning anchor rod 1, including a lower adjusting anchor 7, a second anti-floating plate 19 and an upper adjusting anchor 8, the lower adjusting anchor 7 is threadedly connected to the lower side of the second anti-floating plate 19 for limiting the second anti-floating plate 19, the second anti-floating plate 19 is movably sleeved on the tensioning anchor rod 1 for increasing the contact area, and the upper adjusting anchor 8 is threadedly connected to the tensioning anchor rod 1 on the upper side of the second anti-floating plate 19, for connecting the upper end anchoring end of the tensioning anchor rod 1 with the foundation bottom plate 13 through the adjusting action of the lower adjusting anchor 7 and the upper adjusting anchor 8, and enhancing the integrity of the structure.

[0049] The construction process of the pressure type pre-tensioning anchor rod structure comprises:

[0050] Step 1: construction preparation, greasing the outer surface of the tension anchor rod 1, and sleeving the anchor rod sleeve 2 (PE sleeve) on the outer side of the lower end of the tension anchor rod 1, and installing the pretensioning positioning anchor device and the pretensioning locking anchor device on the tension anchor rod 1, completing the assembly of the pressure type prestressed anchor rod;

[0051] Step 2: RTK surveying and locating anchor rod points, and after drilling is completed, drilling construction is carried out to obtain the drill hole 10, the pressure type prestressed anchor rod is installed in the drill hole 10, then the foundation cushion layer 15 is poured, and non-solidified asphalt is poured between the tension anchor rod 1 and the anchor rod sleeve 2 (cut off the PE sleeve with a diameter of 40 mm at a position higher than the cushion layer by 2-3 centimeters), then cement crystallization 4 (500*500mm) is brushed around the tension anchor rod 1, waterproof base construction is carried out, waterproof rubber sleeve 3 (thickness 6, d=75) is installed, waterproof and waterproof protection layer 14 construction is carried out, and the tension anchor rod 1 is cut to a position below the top elevation of the foundation bottom plate 13;

[0052] Step 3: tensioning the tension anchor rod 1 on the upper side of the waterproof protection layer 14, and after tensioning, the upper row of main reinforcement 16, the bent-up bar 17 and the lower row of main reinforcement 18 of the foundation bottom plate 13 are bound and constructed, and during the steel bar binding process, when the detected tension of the tension anchor rod 1 reaches the design requirement and is stable, the non-solidified asphalt is poured again, and the tension anchor rod 1 is locked by the pretensioning locking anchor device;

[0053] Step 4: after the tension anchor rod 1 is locked, the lower adjusting anchor device 7, the second anti-floating plate 19 and the upper adjusting anchor device 8 are installed at a position 250mm below the upper end of the tension anchor rod 1 (anchoring end), and finally the concrete of the foundation bottom plate 13 is poured.

[0054] The above only describes preferred embodiments of the present application, and is not intended to limit the protection scope of the present application.

Claims

1. A pressure-type prestressed pre-tensioned anchor structure, characterized in that, include: Tensioning anchor bolt (1); And the anchors installed on the tensioning anchors (1): The pre-tensioned positioning anchor is set at the upper anchoring end of the tensioning anchor (1) and located inside the foundation slab (13); The pre-tensioned locking anchor is set on the tensioning anchor (1) below the pre-tensioned positioning anchor, located on the upper side of the waterproof protective layer (14), and matched with the anchor sleeve (2); Anchor sleeve (2) is fitted on the outer side of the lower end of the tension anchor (1) and matches the borehole (10).

2. The pressure-type prestressed pre-tensioned anchor structure as described in claim 1, characterized in that, The upper anchoring end of the tensioning anchor (1) does not penetrate the foundation slab (13).

3. The pressure-type prestressed pre-tensioned anchor structure as described in claim 1, characterized in that, The anchor sleeve (2) is fitted on the lower outer side of the tension anchor (1), and non-curing asphalt is injected into the gap between the anchor sleeve (2) and the tension anchor (1).

4. The pressure-type prestressed pre-tensioned anchor structure as described in claim 1, characterized in that, The outer side of the anchor sleeve (2) is also provided with steel bar positioning brackets (9) in sections, and the steel bar positioning brackets (9) are matched with the limiting protrusions (11) set on the outer side of the anchor sleeve (2).

5. A pressure-type prestressed pre-tensioned anchor bolt structure as described in claim 1, characterized in that, A waterproof rubber ring (20) is also provided at the upper opening of the anchor sleeve (2).

6. The pressure-type prestressed pre-tensioned anchor structure as described in claim 1, characterized in that, The pre-tensioned locking anchor includes: The first anti-buoyancy plate (5) is located on the upper surface of the waterproof protective layer (14), and the lower surface of the first anti-buoyancy plate (5) matches the top of the anchor sleeve (2); Anchor bolt locking member (6) is threadedly connected to tension anchor bolt (1) and is located on the upper surface of the first anti-buoyancy plate (5).

7. A pressure-type prestressed pre-tensioned anchor structure as described in claim 1, characterized in that, The pre-tensioned positioning anchor includes: The lower adjusting anchor (7) is threadedly connected to the lower side of the second anti-buoyancy plate (19); The second anti-buoyancy plate (19) is movably sleeved on the tensioning anchor rod (1); The upper adjusting anchor (8) is threadedly connected to the tensioning anchor (1) on the upper side of the second anti-buoyancy plate (19).

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