Prestressed beam fixed end node structure

Abstract

The utility model discloses a prestressed beam fixed end node structure which comprises a prestressed beam and a column body connected to a prestressed beam unit. The corrugated pipe is connected into the prestressed beam in a penetrating mode, the steel sleeve is connected to the end portion of the corrugated pipe, the anchoring rib is connected into the corrugated pipe in a penetrating mode and extends towards the top of the column body, the spiral rib is connected to the anchoring rib, the fixing plate is connected to the end portion of the anchoring rib, and the extrusion anchor is fixedly connected to the fixing plate. According to the utility model, through the combined arrangement of the plurality of anchoring ribs, the spiral ribs, the fixing plates and the extrusion anchors, the effective fixation and process constraint of the gradually-expanded anchoring ribs can be ensured; through the arrangement of the corrugated pipe, on one hand, a space is provided for penetrating connection of the anchoring ribs, and on the other hand, follow-up grouting in the hole channel is facilitated through the arrangement of the pipe butt joint opening; and through the arrangement of the plastic pressing plate of the sponge cushion, it is guaranteed that the pipe butt joint opening is evenly stressed.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed beam construction, in particular to a prestressed beam fixed end node structure. Background Art

[0002] In building construction, the setting of prestressed beams is an effective means to improve the performance of beams. However, the prestressing method is generally used for the prestressing of beams. For post-tensioning construction, the specific structural node position needs to be considered. The usual post-tensioning construction is set on the outer side of the beam or column through anchor plates and extrusion anchors for fixed construction. However, when there are multiple anchor bars and the anchor is designed to be inside the structure, it is necessary to carry out targeted design of the anchor end. Utility Model Content

[0003] The utility model provides a prestressed beam fixed end node structure, which is used to solve the technical problems of layout, connection and fixation of anchor bars of prefabricated beams.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A prestressed beam fixed end node structure, comprising a prestressed beam, a column connected to the prestressed beam unit, a corrugated pipe inserted into the prestressed beam, a steel sleeve connected to the end of the corrugated pipe, an anchor bar inserted into the corrugated pipe and extending toward the top of the column, a spiral bar connected to the anchor bar, a fixing plate connected to the end of the anchor bar, and an extrusion anchor fixedly connected to the fixing plate;

[0006] There are more than three anchor bars, and they are arranged in a gradually expanding shape from the steel sleeve to the fixing plate.

[0007] Furthermore, the prestressed beam is vertically connected to the column, and the prestressed beam is arranged on one side of the column; the end of the corrugated tube penetrates into the column.

[0008] Furthermore, the bellows is arranged in a straight line, and a thread is arranged on the outer side of the end of the bellows and is threadedly connected to the steel sleeve.

[0009] Furthermore, the corrugated pipe is provided with pipe joints at intervals, and the pipe joints are connected to the plastic pipe and are connected to the grouting pump through the plastic pipe.

[0010] Furthermore, the tube joint is tubular, and its outer diameter adapts to the inner diameter of the plastic tube; the tube joint penetrates the inside of the plastic tube and the two are fixedly connected by a binding wire arranged on the outside of the plastic tube.

[0011] Furthermore, an arc-shaped plastic pressing plate is connected to the pipe joint, and a sponge pad is arranged between the plastic pressing plate and the corrugated pipe; the outer periphery of the plastic pressing plate and the corrugated pipe are fixedly connected by binding wires.

[0012] Furthermore, the plastic pressing plate is a strip-shaped arc plate, and strip-shaped protrusions are arranged on the top of the arc plate; and binding wires are arranged between the strip-shaped protrusions.

[0013] Furthermore, the anchoring bar is arranged in a gradually expanding trumpet shape from the steel sleeve to the fixing plate, and spiral bars are arranged in at least half of the length of the gradually expanding length.

[0014] Furthermore, the fixing plate is a circular plate, and the fixing plate is provided with through holes to adapt to the number of anchor bars; the fixing plate is fixedly connected with the columnar steel bars around it by welding.

[0015] The beneficial effects of the utility model are embodied in:

[0016] 1) The utility model is conducive to ensuring the effective fixation and process restraint of the gradually expanding anchor bars by jointly setting a plurality of anchor bars, spiral bars, fixing plates and extrusion anchors;

[0017] 2) The utility model provides space for the insertion of anchor bars through the setting of the corrugated pipe, and facilitates the subsequent grouting in the hole through the setting of the pipe joint;

[0018] 3) The utility model is conducive to ensuring uniform force on the pipe interface by setting the plastic pressure plate of the sponge pad;

[0019] Other features and advantages of the utility model will be described in the subsequent description, and in part will become apparent from the description, or be understood by implementing the utility model; the main purpose and other advantages of the utility model can be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the fixed end node structure of the prestressed beam;

[0021] Figure 2 This is a schematic diagram of the bellows and its connection structure. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the bellows and its connection structure. Figure 2 .

[0023] Figure numerals: 1-prestressed beam, 2-column, 3-corrugated pipe, 4-steel sleeve, 5-anchor reinforcement, 6-spiral reinforcement, 7-fixed plate, 8-extrusion anchor, 9-sponge pad, 10-plastic pressure plate, 11-binding wire, 12-pipe docking port, 13-plastic pipe. DETAILED DESCRIPTION

[0024] Taking a certain Internet Industrial Park project as an example, it involves a post-tensioned prestressed beam. In order to ensure the effective fixation of the post-tensioned anchor bars, a prestressed beam fixed end node structure is used for construction. Figures 1 to 3 As shown, the fixed end node structure of the prestressed beam includes a prestressed beam 1, a column 2 connected to the unit of the prestressed beam 1, a corrugated tube 3 inserted into the interior of the prestressed beam 1, a steel sleeve 4 connected to the end of the corrugated tube 3, anchor bars 5 inserted into the interior of the corrugated tube 3 and extending toward the top of the column 2, spiral bars 6 connected to the anchor bars 5, a fixing plate 7 connected to the end of the anchor bars 5, and an extrusion anchor 8 fixedly connected to the fixing plate 7; more than three anchor bars 5 are provided, and are gradually expanded from the steel sleeve 4 to the fixing plate 7.

[0025] In this embodiment, the prestressed beam 1 is vertically connected to the column 2, and the prestressed beam 1 is arranged on one side of the column 2; the end of the corrugated pipe 3 penetrates into the column 2. The corrugated pipe 3 is arranged in a straight line, and the outer side of the end of the corrugated pipe 3 is provided with a thread and is threadedly connected to the steel sleeve 4. The corrugated pipe 3 is provided with a pipe joint 12 at intervals, and the pipe joint 12 is connected to the plastic pipe 13 and is connected to the grouting pump through the plastic pipe 13.

[0026] In this embodiment, the pipe joint 12 is tubular, and its outer diameter is adapted to the inner diameter of the plastic pipe 13; the pipe joint 12 penetrates the inside of the plastic pipe 13 and the two are fixedly connected by a binding wire 11 arranged on the outside of the plastic pipe 13. An arc-shaped plastic pressing plate 10 is also connected to the pipe joint 12, and a sponge pad 9 is also arranged between the plastic pressing plate 10 and the corrugated pipe 3; the outer periphery of the plastic pressing plate 10 is fixedly connected to the corrugated pipe 3 by the binding wire 11.

[0027] In this embodiment, the plastic pressing plate 10 is a strip-shaped arc plate, and a strip-shaped protrusion is arranged on the top of the arc plate; and a binding wire 11 is arranged between the strip-shaped protrusions. The anchoring bar 5 is arranged in a gradually expanding trumpet shape from the steel sleeve 4 to the fixing plate 7, and the spiral bar 6 is arranged at least half of the length of the gradually expanding length.

[0028] In this embodiment, the fixing plate 7 is a circular plate, and through holes are arranged on the fixing plate 7 to adapt to the number of anchor bars 5; the fixing plate 7 is fixedly connected to the steel bars of the columns 2 around it by welding.

[0029] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field thinks of within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A prestressed beam fixed end node structure, characterized in that: It comprises a prestressed beam (1), a column (2) connected to the prestressed beam (1) unit, a corrugated pipe (3) inserted into the prestressed beam (1), a steel sleeve (4) connected to the end of the corrugated pipe (3), an anchoring bar (5) inserted into the corrugated pipe (3) and extending toward the top of the column (2), a spiral bar (6) connected to the anchoring bar (5), a fixing plate (7) connected to the end of the anchoring bar (5), and an extrusion anchor (8) fixedly connected to the fixing plate (7); The anchor bars (5) are provided in a number of three or more and are provided in a gradually expanding shape from the steel sleeve (4) to the fixing plate (7).

2. A prestressed beam fixed end node structure as claimed in claim 1, characterized in that: The prestressed beam (1) is vertically connected to the column (2), and the prestressed beam (1) is arranged on one side of the column (2); the end of the corrugated pipe (3) penetrates into the column (2).

3. A prestressed beam fixed end node structure as claimed in claim 2, characterized in that: The bellows (3) is arranged in a straight line, and a thread is arranged on the outer side of the end of the bellows (3) and is threadedly connected to the steel sleeve (4).

4. A prestressed beam fixed end node structure as claimed in claim 1, characterized in that: The corrugated pipe (3) is provided with pipe joints (12) at intervals, and the pipe joints (12) are connected to a plastic pipe (13) and are connected to a grouting pump via the plastic pipe (13).

5. A prestressed beam fixed end node structure as claimed in claim 4, characterized in that: The pipe joint (12) is tubular, and its outer diameter is adapted to the inner diameter of the plastic pipe (13); the pipe joint (12) penetrates the interior of the plastic pipe (13), and the two are fixedly connected by a binding wire (11) arranged on the outside of the plastic pipe (13).

6. A prestressed beam fixed end node structure as claimed in claim 5, characterized in that: An arc-shaped plastic pressing plate (10) is also connected to the pipe joint (12), and a sponge pad (9) is also provided between the plastic pressing plate (10) and the corrugated pipe (3); the outer periphery of the plastic pressing plate (10) and the corrugated pipe (3) are fixedly connected by a binding wire (11).

7. A prestressed beam fixed end node structure as claimed in claim 6, characterized in that: The plastic pressing plate (10) is a strip-shaped arc-shaped plate, and strip-shaped protrusions are arranged on the top of the arc-shaped plate; binding wires (11) are arranged between the strip-shaped protrusions.

8. A prestressed beam fixed end node structure as claimed in claim 1, characterized in that: The anchoring ribs (5) are arranged in a gradually expanding trumpet shape from the steel sleeve (4) to the fixing plate (7), and spiral ribs (6) are arranged in at least half of the gradually expanding length.

9. A prestressed beam fixed end node structure as claimed in claim 1, characterized in that: The fixing plate (7) is a circular plate, and the fixing plate (7) is provided with through holes adapted to the number of anchor bars (5); the fixing plate (7) is fixedly connected to the steel bars of the surrounding columns (2) by welding.

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