Single-end tensioning and locking self-adaptive frame beam

Abstract

The utility model provides a single-end tensioning and locking self-adaptive frame beam, which relates to the technical field of external prestressing construction of bridge engineering, and comprises a known reinforcement cage forming the interior of the frame beam, one opposite side surface of the reinforcement cage is provided with a first side strip, and the other opposite side surface of the reinforcement cage is provided with a second side strip. The first side edge strip and the second side edge strip are detachably installed in the frame beam, the second side edge strip and the first side edge strip are both connected with the surface of the reinforcement cage in an inserted mode, and the second side edge strip is arranged in the mode that the second side edge strip faces the tensioned concrete structure body and the second side edge strip is back to the tensioned concrete structure body. The first side strip and the second side strip are self-contained during concrete pouring, the use strength of the first side strip and the second side strip is guaranteed, the position of the strand penetrating plate is adjusted through sliding of the sliding blocks in the sliding grooves, adaptive adjustment can be conducted according to the stretching angle of the prestressed cable, and the tensile strength of the prestressed cable is improved. According to the scheme, under the condition that the frame beam structure is not damaged, connection with the prestressed cable can be achieved by adjusting the position of the strand penetrating plate.

Description

Technical Field

[0001] The utility model relates to the technical field of external prestressed construction of bridge engineering, in particular to a single-end tensioned and locked adaptive frame beam. Background Art

[0002] In previous bridge construction, prestressing cables were mostly made of steel strands, and prestressing was performed on temporary tensioning platforms at both ends. For example, in the construction of temporary prestressing cables for the diagonal legs of a V-shaped pier, the following steps were performed: a temporary tensioning support frame was set up beneath the diagonal legs, with a tensioning platform located above. Jacks were used to tension and lock the steel strands or high-strength rebar.

[0003] The prior art single-end tensioned locking adaptive frame beam, published as CN201381480Y, features two parallel frame beams with a plurality of internal supports positioned between them. The beams are provided with a plurality of symmetrical prestressing holes for inserting prestressed cables. The locations of the prestressing holes on the frame beams correspond to the locations of the prestressed cables on the tensioned concrete structure. A reinforcement plate is welded to the frame beams.

[0004] However, because the positions of the prestressed bundle holes on the frame beam correspond to the positions of the prestressed cables on the tensioned concrete structure, when manufacturing the frame beam, it is also necessary to open holes according to the positions of the prestressed cables on the tensioned concrete structure. The positions of the prestressed cables of different concrete structures are different. Therefore, in actual use, the prestressed bundle holes opened on the frame beam are likely to affect the strength of the frame beam. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art and to propose a single-end tensioned locking adaptive frame beam.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a single-end tensioned locking adaptive frame beam, comprising a known steel cage constituting the interior of the frame beam, wherein one relative side of the steel cage is provided with a first side strip, and the other relative side is provided with a second side strip, the second side strip and the first side strip are both plugged into the surface of the steel cage, and the second side strips are respectively arranged toward and away from the tensioned concrete structure, the two ends of the first side strip are plugged into the adjacent second side strip sides, and the first side strip sides are provided with a sliding groove along the width direction of the steel cage, a slider is slidably connected in the sliding groove toward the tensioned concrete structure, and a bundle-through plate for connecting the prestressed cable is provided through the surface of the slider.

[0007] Preferably, a plurality of plug-ins are provided on the side of the first side strip facing the steel cage, the surface corners of the plug-ins extend outwards to form columnar protrusions and the plug-ins are plugged into the intersections of the surface of the steel cage.

[0008] Preferably, the second side strip surface is provided with a plurality of linearly arrayed notches, and the second side strip is inserted with an insert strip through the notches, the insert strip surface is hollow, and one end of the insert strip extends into the reinforcement cage and is fixedly connected with a clamping strip overlapping the surface reinforcement of the reinforcement cage.

[0009] Preferably, the insert strip surface is threadedly connected with a screw, and the screw is arranged on the side of the second side strip away from the reinforcement cage.

[0010] Preferably, the first side strip end extends to the second side strip end, and the first side strip end is provided with an end plate abutting the side surface of the second side strip, and the end plate surface is welded with an insert block inserted in the notch.

[0011] Preferably, the sliding block and the sliding groove insertion part are T-shaped, and the sliding block is fixed with the first side strip and the penetrating plate by welding.

[0012] Preferably, the two second side strips arranged on the same side of the reinforcement cage are provided with a connecting rib inserted in the hollow surface of the insert strip arranged at the same height.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that,

[0014] 1、In the utility model, the first side strip and the second side strip which can be detachably installed with the reinforcement cage in the frame beam are arranged, and the first side strip and the second side strip are self-integrated when pouring concrete, so that the use strength of the first side strip and the second side strip can be guaranteed, after the concrete is poured and formed, the position of the penetrating plate can be adjusted by the sliding block in the sliding groove, and the adaptive adjustment can be carried out according to the stretching angle of the prestressed cable, so that the position of the penetrating plate can be adjusted to realize the connection with the prestressed cable without damaging the frame beam structure.

[0015] 2、In the utility model, the insert, the insert strip and the clamping strip are arranged, the relative position of the first side strip and the reinforcement cage can be preliminarily fixed by the insert, the relative position of the second side strip and the reinforcement cage can be preliminarily fixed by the insert strip and the clamping strip, and the relative position of the first side strip and the second side strip can be fixed by the end plate on one side, so that the first side strip and the second side strip cannot be loosened when pouring concrete. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic view of the utility model is provided for single-end tension locking self-adaptive frame beam;

[0017] Figure 2 A structure schematic view of the second side strip of the utility model is provided for single-end tension locking self-adaptive frame beam.

[0018] Figure 3 This is a schematic diagram of the exploded structure of the second side strip of the single-end tensioned and locked adaptive frame beam proposed in the utility model;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0020] Legend: 1. Steel cage; 2. First side strip; 3. Second side strip; 4. End plate; 5. Insert strip; 6. Clamp strip; 7. Plug-in strip; 8. Notch; 9. Connecting rib; 10. Screw; 11. Slider; 12. Through-beam plate; 13. Insert block; 14. Slide groove. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] like Figures 1-4 As shown, the single-end tensioned locking adaptive frame beam includes a steel cage 1 that is known to constitute the interior of the frame beam. According to the existing construction method, the strength of the frame beam itself can be ensured by adding the steel cage 1 to the part of the frame beam close to the beam and then pouring concrete. One of the opposite sides of the steel cage 1 is provided with a first side strip 2, and the other opposite side is provided with a second side strip 3. By installing the first side strip 2 and the second side strip 3 on the steel cage 1, when pouring concrete later, it can be completely embedded in the frame beam and form a whole with the frame beam without damaging the overall structure of the frame beam. The second side strip 3 and the first side strip 2 are both plugged into the surface of the steel cage 1, and the second side strip 3 are respectively It is arranged toward and away from the tensioned concrete structure, and the two ends of the first side strip 2 are plugged into the sides of the adjacent second side strip 3 and a slide groove 14 is provided on the side of the first side strip 2 along the width direction of the steel cage 1. A slider 11 is slidably connected in the slide groove 14 facing the tensioned concrete structure, and a through-beam 12 for connecting the prestressed cable is penetrated through the surface of the slider 11. When pouring concrete in the later stage, the side of the first side strip 2 with the slide groove 14 is exposed to the outside, so that personnel can install the slider 11 from the outside, and then adjust the position of the slider 11 in the slide groove 14 according to the length and angle of the prestressed cable to ensure that the prestressed cable is smoothly connected to the through-beam 12 on the slider 11.

[0024] Furthermore: a plurality of plug-ins 7 are provided on the side of the first side strip 2 facing the steel cage 1, and the surface corners of the plug-ins 7 extend outward to form columnar protrusions and the plug-ins 7 are plugged into the intersection of the surface of the steel cage 1. The provided plug-ins 7 are independent individuals. During actual assembly, the lengths of the first side strip 2 and the second side strip 3 are adaptively cut according to the width of the bundled steel cage 1 and the position of the intersection, and the plug-ins 7 are rigidly fixed to the side of the first side strip 2 by welding or bolts, and the position of the first side strip 2 is fixed by plugging the plug-ins 7 into the intersection of the surface of the steel cage 1.

[0025] Furthermore: the surface of the second side strip 3 is provided with a plurality of slots 8 distributed in a linear array and the second side strip 3 is connected with an insertion strip 5 through the slot 8. The surface of the insertion strip 5 is hollowed out and one end extends into the steel cage 1 and is fixedly connected with a clamping strip 6 that overlaps the steel bars on the surface of the steel cage 1. The hollow part of the surface of the insertion strip 5 is threadedly connected with a screw 10, and the screw 10 is set on the side of the second side strip 3 facing away from the steel cage 1. Similarly, according to the bundling size of the steel cage 1 on site, the personnel cuts the insertion strip 5 and welds the clamping strip 6 to the end of the insertion strip 5. The insertion strip 5 is passed through the slot 8 at the corresponding position to realize that the clamping strip 6 is clamped to the inner wall of the steel cage 1, so that the relative position of the second side strip 3 and the steel cage 1 can be fixed. The set screw 10 can fix the relative position of the insertion strip 5 and the second side strip 3 after the clamping strip 6 is pressed against the inner wall of the steel cage 1, and the second side strip 3 is pressed against the outer wall of the steel cage 1.

[0026] Furthermore: the end of the first side strip 2 extends to the end of the second side strip 3 and the end of the first side strip 2 is provided with an end plate 4 that fits with the side of the second side strip 3, and the surface of the end plate 4 is welded with an insert 13 that is plugged into the slot 8. By plugging the insert 13 into the slot 8 and connecting and fixing the end plate 4 to the first side strip 2 and the second side strip 3 through welding, the relative position of the end of the first side strip 2 and the second side strip 3 can be fixed, and by removing an end plate 4 in advance, personnel can send the slider 11 into the slide groove 14 from the side of the first side strip 2.

[0027] Furthermore: the connecting part between the slider 11 and the slide groove 14 is T-shaped, and the slider 11 is fixed to the first side strip 2 and the beam-through plate 12 by welding, which can ensure that the slider 11 will not separate from the slide groove 14, and the relative position of the slider 11 and the first side strip 2 and the beam-through plate 12 is fixed by welding, so that the overall position of the slider 11 is fixed.

[0028] Furthermore: there are two second side strips 3 located on the same side of the steel cage 1, and a connecting rib 9 is provided between the two second side strips 3 and inserted into the hollowed-out surface of the insertion strip 5 set at the same height. This scheme is a pre-selected scheme. The two second side strips 3 can be installed using the connecting rib 9, and welding can be selected to fix the connecting rib 9 and the insertion strip 5. That is, the stability of the installation can be ensured by installing two second side strips 3 on the side of the steel cage 1.

[0029] The construction method is that the size of the steel cage 1 will be designed on site according to the shape and size of the beam, and after the steel cage 1 is assembled, the second side strip 3 is installed on the side of the steel cage 1 using the insert strip 5 and the clamping strip 6, and the first side strip 2 is installed on the other side of the steel cage 1 using the plug-in 7. When placing the steel cage 1, ensure that the first side strip 2 on one side faces the tensioned concrete structure. After the formwork is installed and the concrete is poured, the slider 11 is sent in from the slide groove 14 port on one side of the first side strip 2, the position of the slider 11 is adjusted and the relative position of the slider 11 and the first side strip 2 and the beam plate 12 is fixed by welding, and then the end plate 4 is installed at the adjacent ends of the first side strip 2 and the second side strip 3 and fixed by welding to realize the installation of the entire device. Finally, the prestressed cable on the tensioned concrete structure can be passed through the beam plate 12.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A single-end tensioned locking adaptive frame beam, comprising a known steel cage (1) constituting the interior of the frame beam, characterized in that: The steel cage (1) is provided with a first side strip (2) on one of its opposite sides and a second side strip (3) on the other opposite side. The second side strip (3) and the first side strip (2) are both plugged into the surface of the steel cage (1), and the second side strip (3) is respectively arranged toward and away from the tensioned concrete structure. The two ends of the first side strip (2) are plugged into the side of the adjacent second side strip (3), and a sliding groove (14) is provided on the side of the first side strip (2) along the width direction of the steel cage (1). A slider (11) is slidably connected in the sliding groove (14) toward the tensioned concrete structure, and a bundle-piercing plate (12) for connecting the prestressed cable is provided through the surface of the slider (11).

2. The single-end tensioned and locked adaptive frame beam according to claim 1, characterized in that: A plurality of plug-ins (7) are provided on the side of the first side strip (2) facing the steel cage (1), the surface corners of the plug-ins (7) extend outwards to form columnar protrusions, and the plug-ins (7) are plugged into intersections with the surfaces of the steel cage (1).

3. The single-end tensioned and locked adaptive frame beam according to claim 1, characterized in that: The surface of the second side strip (3) is provided with a plurality of slots (8) distributed in a linear array, and the second side strip (3) is connected with an inserting strip (5) through the slot (8); the surface of the inserting strip (5) is hollowed out, and one end of the inserting strip extends into the steel cage (1) and is fixedly connected with a clamping strip (6) overlapped with the steel bars on the surface of the steel cage (1).

4. The single-end tensioned and locked adaptive frame beam according to claim 3, characterized in that: The hollowed portion of the surface of the insert strip (5) is threadedly connected with a screw (10), and the screw (10) is arranged on the side of the second side strip (3) facing away from the steel cage (1).

5. The single-end tensioned and locked adaptive frame beam according to claim 1, characterized in that: The end of the first side strip (2) extends to the end of the second side strip (3), and the end of the first side strip (2) is provided with an end plate (4) that is in contact with the side of the second side strip (3), and the surface of the end plate (4) is welded with an insert (13) that is plugged into the notch (8).

6. The single-end tensioned and locked adaptive frame beam according to claim 1, characterized in that: The connecting portion between the slider (11) and the slide groove (14) is T-shaped, and the slider (11) is fixed to the first side strip (2) and the beam-through plate (12) by welding.

7. The single-end tensioned and locked adaptive frame beam according to claim 1, characterized in that: Two second side strips (3) are provided on the same side of the steel cage (1), and a connecting rib (9) is provided between the two second side strips (3) and is inserted into the hollowed-out portion of the surface of the insert strips (5) provided at the same height.

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