A connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station

Abstract

The present invention belongs to the technical field of elevated stations, and specifically relates to a connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station, comprising a prefabricated concrete external wall panel and a main structure; the prefabricated concrete external wall panel is a three-dimensional structure, and the outer side of the prefabricated concrete external wall panel protrudes outward, and the inner side is provided with a load-bearing cross beam of the external wall panel; the side beams of the main structure extend outwardly to form a corbel, the bottom of the load-bearing cross beam of the external wall panel is positioned and supported on the top surface of the corbel, and the side of the load-bearing cross beam of the external wall panel is fixedly connected to the top of the side beam of the main structure through a horizontal limiting angle steel. The present invention arranges a corbel on the outer side of the side beam of the main structure to extend into the space behind the prefabricated concrete external wall panel, so that the load-bearing cross beam of the external wall panel of the prefabricated concrete external wall panel falls directly on the corbel, the eccentricity of the center of gravity of the external wall panel from the support point is greatly reduced, and the overturning bending moment caused by the eccentricity is correspondingly reduced, thereby reducing the internal force of the node and improving the reliability of the connection node.

Description

Technical Field

[0001] The invention belongs to the technical field of elevated stations, and in particular relates to a connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station. Background Art

[0002] With the vigorous promotion of prefabricated buildings and people's increasing requirements for building facades, many buildings are now beginning to use prefabricated concrete exterior wall panels for their exterior walls. Prefabricated concrete exterior wall panels are non-load-bearing exterior wall panels that are connected to the main structure and serve as enclosures. The characteristic is that they can be prefabricated into unique shapes according to needs, which can make the building exterior wall have strong expressiveness. Compared with traditional exterior walls, they have the advantages of fast construction, good quality and low maintenance costs.

[0003] The connection form between the external wall panel and the main structure generally refers to the national standard drawing "Precast Concrete External Wall Panel (I)" (16G333), in which the external wall panels 100 are all flat-plate type, and the method of using the hanging panel to extend the bracket and place it on the main structure side beam 200 is as follows. Figure 1 and Figure 2 As shown in Figure 1, this solution arranges the connection nodes on the main structural components, which occupies some indoor space. At present, more than 100 external wall panels of elevated stations are prefabricated into three-dimensional panels, such as Figure 3 As shown, in order to meet the requirements of the facade modeling of the elevated rail transit station, but if this connection form is adopted for the three-dimensional plate and the main structure, the center of gravity will deviate seriously from the main structure, and the overturning condition caused by eccentricity will exist for a long time. The upper support point is mainly used to provide horizontal tension to resist overturning; the supporting nodes on the prefabricated hanging plate resist this horizontal tension for a long time, which is not good for the durability of the node; the prefabricated hanging plate extends out of the hanging ear and is placed on the main structure. It is a key part for transmitting vertical force and the stress is relatively concentrated. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station, which can reduce the overturning moment transmitted from the external wall panel to the connection node between it and the main structure and improve the reliability of the connection node.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is a connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station, comprising a precast concrete external wall panel and a main structure; the precast concrete external wall panel is a three-dimensional structure, and the outer side of the precast concrete external wall panel protrudes outward, and the inner side is provided with an external wall panel load-bearing beam for fixed connection with the main structure; the side beam of the main structure extends outward to form a corbel, and the bottom of the external wall panel load-bearing beam is positioned and supported on the top surface of the corbel, and the side surface of the external wall panel load-bearing beam is fixedly connected to the top of the side beam of the main structure through a horizontal limiting angle steel.

[0006] Furthermore, a screw sleeve is pre-embedded at the bottom of the load-bearing cross beam of the external wall panel, a vertical limiting screw is threadedly connected in the screw sleeve, and the bottom end of the vertical limiting screw is supported on the top surface of the corbel.

[0007] Furthermore, a vertical limit embedded plate is pre-embedded on the top surface of the corbel, and the bottom end of the vertical limit screw is supported on the vertical limit embedded plate.

[0008] Furthermore, anchor bars are fixed on the bottom surface of the vertical limit embedded plate, and the anchor bars are anchored in the concrete of the corbel.

[0009] Furthermore, the side surface of the external wall panel load-bearing beam is connected to the vertical part of the horizontal limit angle steel through a horizontal constraint screw; one end of the horizontal constraint screw is pre-embedded in the external wall panel load-bearing beam, and the other end passes through the screw hole on the vertical part of the horizontal limit angle steel and is fixed by a nut.

[0010] Furthermore, an anchor is embedded in the load-bearing beam of the external wall panel, and a nut is provided at one end of the horizontal constraint screw embedded in the load-bearing beam of the external wall panel, and the nut is connected to the anchor.

[0011] Furthermore, a vertical elevation adjustment square steel pipe is fixed on the top surface of the side beam of the main structure, and the top of the vertical elevation adjustment square steel pipe is connected to the horizontal part of the horizontal limit angle steel through an adjustment bolt.

[0012] Furthermore, a horizontal limit embedded plate is embedded on the top surface of the side beam of the main structure, and the bottom of the vertical elevation adjustment square steel pipe is connected to the horizontal limit embedded plate.

[0013] Furthermore, the horizontal limit embedded plate is connected with anchor bars, and the anchor bars are anchored in the concrete of the side beams of the main structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The present invention arranges a corbel on the outside of the side beam of the main structure to support the precast concrete external wall panel, and extends the corbel into the space behind the precast concrete external wall panel, so that the external wall panel load-bearing beam of the precast concrete external wall panel directly falls on the corbel of the main structure, and the eccentricity between the center of gravity of the precast concrete external wall panel and the support point is greatly reduced, and the overturning bending moment of the upper support node caused by the eccentricity is also reduced accordingly, thereby reducing the internal force of the connection node and improving the reliability and durability of the connection node;

[0016] (2) The connection node provided by the present invention is suitable for connecting a three-dimensional precast concrete external wall panel with a main structure. It can make full use of the space inside the three-dimensional precast concrete external wall panel and arrange the node inside the panel, thereby ensuring that the space inside the main structure is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the connection between the flat-plate external wall panel and the side beam of the main structure in the background technology of the present invention;

[0019] Figure 2 It is a schematic diagram of the connection between the flat-plate external wall panel and the side beam of the main structure in the background technology of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection between the three-dimensional plate and the side beam of the main structure in the background technology of the present invention;

[0021] Figure 4 A plan view of the connection between the three-dimensional prefabricated external wall panels of the elevated station provided by the embodiment of the present invention and the main structure;

[0022] Figure 5 An elevation view of the connection between the three-dimensional prefabricated external wall panels of an elevated station provided by an embodiment of the present invention and the main structure;

[0023] Figure 6 A schematic diagram of a connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station provided by an embodiment of the present invention;

[0024] In the figure: 1. Precast concrete external wall panel; 2. Main structure; 3. External wall panel load-bearing beam; 4. Corbel; 5. Horizontal restraining screw; 6. Horizontal limit angle steel; 7. Horizontal limit embedded plate; 8. Vertical limit embedded plate; 9. Vertical limit screw; 10. Screw sleeve; 11. Vertical elevation adjustment square steel pipe; 12. Adjustment bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] like Figure 4-Figure 6 As shown, this embodiment provides a connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station, comprising a precast concrete external wall panel 1 and a main structure 2; the precast concrete external wall panel 1 is a three-dimensional structure, and the outer side of the precast concrete external wall panel 1 protrudes outward, and the inner side is provided with an external wall panel load-bearing beam 3 for fixed connection with the main structure 2; a corbel 4 extends outward from the outer side of the side beam of the main structure 2, and the bottom of the external wall panel load-bearing beam 3 is positioned and supported on the top surface of the corbel 4, and the side of the external wall panel load-bearing beam 3 is fixedly connected to the top of the side beam of the main structure 2 through a horizontal limiting angle steel 6. In this embodiment, a corbel 4 is arranged on the outer side of the side beam of the main structure 2 to extend into the space behind the three-dimensional precast concrete external wall panel 1, so that the external wall panel load-bearing beam 3 of the precast concrete external wall panel 1 directly falls on the corbel 4 of the main structure 2, the structural force form is more reasonable, the eccentricity of the center of gravity of the three-dimensional precast concrete external wall panel 1 from the support point is greatly reduced, and the overturning moment of the upper support node caused by the eccentricity is also reduced accordingly, the internal force of the connection node is reduced, the connection reliability and durability of the external protective structure are improved, and the maintenance cost of the protective structure is reduced; the connection node is suitable for the connection of various three-dimensional precast concrete external wall panels 1 with complex shapes and the main structure 2, and can make full use of the space in the three-dimensional precast concrete external wall panel 1, arrange the node in the precast concrete external wall panel 1, ensure that the three-dimensional space in the main structure 2 is not affected, and has the advantages of simple design, economical and practical, and convenient construction.

[0029] Furthermore, a screw sleeve 10 is pre-embedded at the bottom of the external wall panel load-bearing beam 3, and a vertical limiting screw rod 9 is threadedly connected in the screw sleeve 10, and the bottom end of the vertical limiting screw rod 9 is supported on the top surface of the corbel 4. In this embodiment, the top end of the vertical limiting screw rod 9 is threadedly connected to the screw sleeve 10 in the external wall panel load-bearing beam 3, and the bottom end is supported on the corbel 4, so as to adjust and position the precast concrete external wall panel 1 in the vertical direction.

[0030] Furthermore, a vertical limit embedded plate 8 is embedded on the top surface of the corbel 4, and the bottom end of the vertical limit screw 9 is supported on the vertical limit embedded plate 8. Furthermore, anchor bars are fixed on the bottom surface of the vertical limit embedded plate 8, and the anchor bars are anchored in the concrete of the corbel 4. In this embodiment, the vertical limit embedded plate 8 is anchored to the top surface of the corbel 4 by anchor bars, so that the bottom end of the vertical limit screw 9 can be against the vertical limit embedded plate 8, thereby improving the accuracy of vertical positioning and avoiding damage to the concrete structure. The anchor bar can adopt a C-shaped structure, and the open end of the C-shape is downward, and the top end surface is welded to the vertical limit embedded plate 8 to improve the anchoring stability.

[0031] Furthermore, the side surface of the external wall panel load-bearing beam 3 is connected to the vertical portion of the horizontal limit angle steel 6 through a horizontal constraint screw 5; one end of the horizontal constraint screw 5 is embedded in the external wall panel load-bearing beam 3, and the other end is fixed by a nut after passing through the screw hole on the vertical portion of the horizontal limit angle steel 6. In this embodiment, a screw hole for the horizontal constraint screw 5 to pass through is provided on the vertical portion of the horizontal limit angle steel 6. By embedding one end of the horizontal constraint screw 5 in the external wall panel load-bearing beam 3, and the other end is fixed by passing through the screw hole on the vertical portion of the horizontal limit angle steel 6 through a nut, a fixed connection between the horizontal limit angle steel 6 and the external wall panel load-bearing beam 3 is achieved; a gasket can also be added between the nut and the vertical portion of the horizontal limit angle steel 6 and sleeved on the horizontal constraint screw 5.

[0032] Furthermore, an anchor is embedded in the external wall panel load-bearing beam 3, and a nut is provided at one end of the horizontal constraint screw 5 embedded in the external wall panel load-bearing beam 3, and the nut is connected to the anchor. In this embodiment, the anchor is connected to the nut of the horizontal constraint screw 5, thereby improving the anchoring stability of the nut end of the horizontal constraint screw 5.

[0033] Furthermore, a vertical elevation adjustment square steel pipe 11 is fixed on the top surface of the side beam of the main structure 2, and the top of the vertical elevation adjustment square steel pipe 11 is connected to the horizontal part of the horizontal limit angle steel 6 through an adjustment bolt 12. Figure 6As shown, in this embodiment, a vertical elevation adjustment square steel tube 11 is fixed on the top surface of the side beam of the main structure 2, and the vertical elevation adjustment square steel tube 11 has a hollow portion along the length direction of the side beam, and bolt holes are correspondingly provided on the top plate of the vertical elevation adjustment square steel tube 11 and the horizontal portion of the horizontal limit angle steel 6. The threaded end of the adjusting bolt 12 passes through the bolt hole on the horizontal portion of the horizontal limit angle steel 6 and is connected to the threaded hole on the vertical elevation adjustment square steel tube 11, thereby realizing the connection between the horizontal limit angle steel 6 and the side beam of the main structure 2.

[0034] Furthermore, a horizontal limit embedded plate 7 is embedded on the top surface of the side beam of the main structure 2, and the bottom of the vertical elevation adjustment square steel pipe 11 is connected to the horizontal limit embedded plate 7. Furthermore, anchor bars are connected to the horizontal limit embedded plate 7, and the anchor bars are anchored in the concrete of the side beam of the main structure 2. In this embodiment, the horizontal limit embedded plate 7 is anchored to the top surface of the side beam of the main structure 2 by anchor bars, and the bottom of the vertical elevation adjustment square steel pipe 11 is welded to the horizontal limit embedded plate 7, so as to ensure the stability of the vertical elevation adjustment square steel pipe 11 on the side beam of the main structure 2, thereby improving the reliability of the connection node.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A connection node between a three-dimensional prefabricated external wall panel and a main structure of an elevated station, characterized in that: The invention comprises a precast concrete external wall panel and a main structure; the precast concrete external wall panel is a three-dimensional structure, and the outer side of the precast concrete external wall panel protrudes outward, and the inner side is provided with an external wall panel load-bearing beam for fixed connection with the main structure; the side beam of the main structure extends outward to form a corbel, the bottom of the external wall panel load-bearing beam is positioned and supported on the top surface of the corbel, and the side surface of the external wall panel load-bearing beam is fixedly connected to the top of the side beam of the main structure through a horizontal limiting angle steel; the bottom of the external wall panel load-bearing beam is pre-embedded with a screw sleeve A vertical limit screw is threadedly connected in the threaded sleeve, and the bottom end of the vertical limit screw is supported on the top surface of the corbel; a vertical elevation adjustment square steel pipe is fixed on the top surface of the side beam of the main structure, and the top of the vertical elevation adjustment square steel pipe is connected to the horizontal part of the horizontal limit angle steel by an adjusting bolt; bolt holes are correspondingly provided on the top plate of the vertical elevation adjustment square steel pipe and the horizontal part of the horizontal limit angle steel, and the threaded end of the adjusting bolt passes through the bolt hole on the horizontal part of the horizontal limit angle steel and is connected to the threaded hole on the vertical elevation adjustment square steel pipe.

2. The connection node between the three-dimensional prefabricated external wall panel and the main structure of an elevated station as claimed in claim 1, characterized in that: A vertical limit embedded plate is pre-embedded on the top surface of the corbel, and the bottom end of the vertical limit screw is supported on the vertical limit embedded plate.

3. The connection node between the three-dimensional prefabricated external wall panel and the main structure of an elevated station as claimed in claim 2, characterized in that: Anchor bars are fixed on the bottom surface of the vertical limit embedded plate, and the anchor bars are anchored in the concrete of the corbel.

4. The connection node between the three-dimensional prefabricated external wall panel and the main structure of an elevated station as claimed in claim 1, characterized in that: The side surface of the external wall panel load-bearing beam is connected to the vertical part of the horizontal limit angle steel through a horizontal constraint screw; one end of the horizontal constraint screw is pre-embedded in the external wall panel load-bearing beam, and the other end passes through the screw hole on the vertical part of the horizontal limit angle steel and is fixed by a nut.

5. The connection node between the three-dimensional prefabricated external wall panel and the main structure of an elevated station as claimed in claim 4, characterized in that: An anchor is pre-buried in the load-bearing cross beam of the external wall panel, and a nut is provided at one end of the horizontal constraint screw pre-buried in the load-bearing cross beam of the external wall panel, and the nut is connected to the anchor.

6. The connection node between the three-dimensional prefabricated external wall panel and the main structure of an elevated station as claimed in claim 1, characterized in that: A horizontal limit embedded plate is embedded on the top surface of the side beam of the main structure, and the bottom of the vertical elevation adjustment square steel pipe is connected to the horizontal limit embedded plate.

7. The connection node between the three-dimensional prefabricated external wall panel and the main structure of an elevated station as claimed in claim 6, characterized in that: The horizontal limit embedded plate is connected with anchor bars, and the anchor bars are anchored in the concrete of the side beams of the main structure.

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