Connector for inner and outer leaf wall steel bars of sandwich masonry wall

Abstract

The utility model discloses a connector for inner and outer leaf wall steel bars of a sandwich masonry wall, which comprises a thin steel sheet which can be bent to be used for connecting embedded steel bars of an inner leaf wall and full-length steel bars or meshes in mortar joints of an outer leaf wall, and two end parts of the thin steel sheet are respectively provided with a first hole groove and a second hole groove; the fixing assembly comprises a screw rod and a nut, the screw rod penetrates through the first hole groove and the second hole groove, and the nut is used for tightening the screw rod so as to fix the thin steel sheet; the first hole groove and the second hole groove are thickened; wherein the size of the thin steel sheet is matched with the diameter and the required length of the connected reinforcing steel bar. The structure is simple, the horizontal full-length horizontal steel bars or meshes in mortar joint mortar of the outer wall body are connected with the embedded steel bars on the inner wall body, and the stability, wind resistance and shock resistance of the outer wall body are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection between an outer leaf wall and an inner leaf wall, in particular to a connector for steel bars of inner and outer leaf walls of a sandwich masonry wall. Background Art

[0002] In recent years, sandwich masonry walls with decorative outer walls have been widely used in urban renewal buildings. As one of the key technologies of sandwich masonry walls, the tie between the outer and inner walls is the basis for ensuring the stability, wind resistance and earthquake resistance of the outer wall.

[0003] At present, the inner and outer leaf walls of sandwich masonry walls are mostly tied together in the form of stainless steel anchors, while there are relatively few studies on the use of embedded bars to connect the inner leaf wall with the horizontal full-length steel bars or steel mesh of the outer leaf wall.

[0004] 1. Stainless steel anchor connection

[0005] At present, the anchor connection technology is a relatively mature and most widely used connection technology for the inner and outer leaf walls of sandwich walls. The principle of the anchor connection is to embed one end of the anchor in the masonry mortar joint of the inner leaf wall, and weld the other end to the horizontal full-length steel bar or steel mesh in the mortar joint of the outer leaf wall. When the masonry mortar material hardens, the inner and outer walls are connected together through the anchor. However, this type of connection node has the following main difficulties:

[0006] (1) The tie-in embedded parts need to be pre-embedded, and the civil engineering general contractor needs to embed them during the construction of the second structure. This leads to management difficulties such as process handover and position accuracy, and whether the subsequent exterior wall decoration unit can receive them.

[0007] (2) This process can easily cause great difficulties in exterior wall painting and waterproofing, affecting the control of exterior wall painting flatness and slow effectiveness; the quality of exterior wall waterproofing construction is difficult to ensure, and there is a risk of exterior wall water leakage;

[0008] (3) The anchors need to be welded to the steel mesh inside the decorative outer leaf wall, which has a complex process, slow effect, and correspondingly high construction costs.

[0009] 2. Embedded reinforcement connection: The embedded reinforcement on the inner leaf wall is connected to the full-length reinforcement or reinforcement mesh in the horizontal mortar joint of the leaf wall by binding.

[0010] At present, the inner leaf wall reinforcement connection technology is a new type of connection technology for the inner and outer leaves of sandwich walls. Figure 1As shown in the figure, it has the advantages of convenient construction, faster effect and lower construction cost than the traditional tie-joint connection technology. However, welding cannot be used to connect the inner leaf wall tie-joint steel bars and the full-length steel bars in the horizontal mortar joints of the outer leaf wall or the steel mesh and the full-length steel bars or mesh in the mortar joints of the outer leaf wall. Otherwise, the high temperature generated by welding will damage the anchor glue, thereby affecting the bearing capacity of the inner leaf wall tie-joint steel bars; when binding is used for connection, the steel bars mainly rely on the bond strength of the masonry mortar to provide the tensile strength of the steel bars. Since the mortar is thin, it is difficult to ensure its bond strength, and the quality of steel bar binding is greatly affected by the construction personnel, which has a certain impact on the tensile reliability of the steel bar connection.

[0011] In summary, there is an urgent need to develop an inner and outer leaf wall steel bar connector to effectively solve the connection problem between the full-length steel bars or steel mesh in the horizontal mortar joints of the outer leaf wall of the sandwich masonry wall and the inner leaf wall tie steel bars, meet the horizontal force transmission requirements of the steel bar connection, and control the construction quality to ensure the stability, wind resistance and earthquake resistance of the outer leaf wall. Utility Model Content

[0012] The technical problem to be solved by the present application is that in the prior art, welding cannot be used to connect the inner leaf wall tie steel bars of the sandwich masonry wall with the full-length steel bars or steel mesh in the horizontal mortar joints of the outer leaf wall. When binding is used, it is difficult to ensure the bonding strength due to the thin mortar, and the quality of the steel bar binding is greatly affected by the construction personnel, which has a certain impact on the tensile reliability of the steel bar connection.

[0013] In order to solve the above-mentioned technical problems, the present application provides a connector for the inner and outer leaf wall steel bars of a sandwich masonry wall, comprising: a thin steel sheet, which can be bent to connect the embedded steel bars of the inner leaf wall and the through-length steel bars or mesh in the mortar joints of the outer leaf wall, and the two ends of the thin steel sheet are respectively provided with a first hole groove and a second hole groove; a fixing component, comprising a screw and a nut, the screw passes through the first hole groove and the second hole groove, and the nut is used to tighten the screw to fix the thin steel sheet; wherein the first hole groove and the second hole groove have a thickened design; wherein the size of the thin steel sheet is adapted to the diameter of the connected steel bars and the required length.

[0014] According to an embodiment of the present application, the thin steel sheet is made of stainless steel or galvanized steel sheet.

[0015] According to the embodiment of the present application, the upper surface of the thin steel sheet is designed to be in a straight line shape, and the thin steel sheet as a whole is thick at both ends and thin in the middle.

[0016] According to an embodiment of the present application, the screw rod is a steel screw rod, and the nut is a steel nut.

[0017] According to an embodiment of the present application, an external thread is provided on the outer side of the screw rod, and an internal thread matching the external thread is provided in the first hole groove and the second hole groove.

[0018] According to an embodiment of the present application, a screw head having a diameter greater than that of the first hole groove and the second hole groove is provided at the top of the screw rod.

[0019] According to an embodiment of the present application, at least two thin steel sheets are arranged on each embedded steel bar.

[0020] According to the embodiment of the present application, the embedded steel bar is parallel to and abuts against the outer longitudinal bars of the full-length steel bar or mesh.

[0021] According to an embodiment of the present application, a thin steel sheet is bent and wrapped around the outer longitudinal bars of the embedded steel bars and the full-length steel bars or mesh, a screw rod passes through the superimposed first and second hole grooves, and a nut is used to tighten the screw rod, thereby forming a tight connection between the embedded steel bars and the outer longitudinal bars of the full-length steel bars or mesh.

[0022] According to the embodiment of the present application, the inner and outer leaf wall steel bars and the thin steel sheets connecting the steel bars are all built in the mortar.

[0023] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0024] 1. The utility model thin steel sheet steel bar connector realizes the reliable connection between the through-length horizontal steel bars or mesh in the mortar joints of the outer leaf wall and the embedded steel bars on the inner leaf wall, so as to ensure that the horizontal forces such as wind load and earthquake action of the outer leaf wall are transmitted to the inner leaf wall and the main structure.

[0025] 2. The utility model adopts a thin steel sheet with a hole groove as a bendable connecting piece. The steel sheet is partially thickened at the hole groove to ensure the shear strength and rigidity when it is connected with the steel screw and steel nut. The structure is simple and the processing is convenient.

[0026] 3. The embedded steel bars of the inner leaf wall are placed parallel to the outer longitudinal bars of the full-length steel bars or steel mesh in the horizontal mortar joints of the outer leaf wall. The thin steel sheet is bent and wrapped around the embedded steel bars, full-length steel bars or steel mesh that need to be connected. The steel screw passes through the holes in the thin steel sheet and the steel nut is tightened. The steel bar connection construction is convenient, and it is easy to check the construction quality of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present application, rather than limiting the present application.

[0028] Figure 1 It is a schematic diagram of the inner and outer leaf wall planting connection and the steel bar binding connection of the sandwich masonry wall in the prior art;

[0029] Figure 2 A top view of a connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to an example of the utility model;

[0030] Figure 3 A side view of a connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to an example of the utility model;

[0031] Figure 4 This is an application scenario diagram of a connector for inner and outer leaf wall reinforcements of a sandwich masonry wall as exemplified by the utility model;

[0032] Figure 5 The utility model is a schematic diagram of the connection structure of the connector and the steel bars of the inner and outer leaf walls of a sandwich masonry wall exemplified by the present invention.

[0033] The following are the descriptions of the reference numerals:

[0034] 1. Inner leaf masonry wall, 2. Outer leaf masonry wall, 3. Embedded steel bars, 4. Full-length steel bars or mesh, 5. Steel bar connectors, 6. Steel bar binding, 10. Thin steel sheet, 11. First hole slot, 12. Second hole slot, 13. Screw, 14. Nut. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme of the embodiment of the present application will be clearly and completely described in conjunction with the drawings of the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0036] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which this application belongs. The words "first", "second" and similar words used in the patent application specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "an" do not indicate a quantity limitation, but indicate the existence of at least one.

[0037] like Figures 2 to 5 As shown, a connector for the inner and outer leaf wall steel bars of a sandwich masonry wall as exemplified by the utility model comprises a thin steel sheet 10 with holes and grooves at both ends, the thin steel sheet 10 can be bent to wrap the two steel bars to be connected, the steel screw passes through the groove of the thin steel sheet 10, and the steel nut is tightened to achieve effective connection of the steel bars. Aiming at the weak point that the embedded steel bars on the outer leaf wall and the inner leaf wall of the above sandwich masonry wall are connected by steel bar binding 6, the present application uses the steel bar connector 5 to connect the horizontal through-length horizontal steel bars or mesh in the mortar of the outer leaf wall and the embedded steel bars 3 on the inner leaf wall, so as to achieve reliable transmission of horizontal forces such as wind loads and earthquake effects of the outer leaf wall, so as to ensure the stability, wind resistance and earthquake resistance of the outer leaf wall.

[0038] In this embodiment, the thin steel sheet 10 can be bent to connect the embedded steel bars 3 of the inner leaf masonry wall 1 and the full-length steel bars or mesh 4 in the mortar joints of the outer leaf masonry wall 2. The two ends of the thin steel sheet 10 are respectively provided with a first hole groove 11 and a second hole groove 12.

[0039] Furthermore, the thin steel sheet 10 is made of stainless steel or galvanized steel to meet durability requirements.

[0040] Furthermore, the first hole slot 11 and the second hole slot 12 have a thickened design, and the steel sheet at the hole slot is partially thickened to ensure the shear strength and rigidity when connected with the steel screw and steel nut.

[0041] Furthermore, if Figure 2 , Figure 3 As shown, the upper surface of the thin steel sheet 10 is designed to be in a straight line shape, and the thin steel sheet 10 as a whole is thick at both ends and thin in the middle. The size of the thin steel sheet 10 is processed into a straight line shape by the factory according to the diameter of the connected steel bar and the required length of the connection, that is, the size of the thin steel sheet 10 is compatible with the diameter of the connected steel bar and the required length, and the processing is convenient.

[0042] In this embodiment, the fixing assembly includes a screw rod 13 and a nut 14 . The screw rod 13 passes through the first hole slot 11 and the second hole slot 12 . The nut 14 is used to tighten the screw rod 13 , thereby fixing the thin steel sheet 10 .

[0043] Furthermore, the screw rod 13 is a steel screw rod, and the nut 14 is a steel nut. The steel screw rod and the steel nut mainly bear the shear force and fasten the thin steel sheet 10.

[0044] Furthermore, an outer side of the screw rod 13 is provided with an external thread, and the first hole groove 11 and the second hole groove 12 are provided with an internal thread matching the external thread.

[0045] Furthermore, a screw head having a diameter greater than that of the first hole slot 11 and the second hole slot 12 is provided at the top of the screw rod 13. At the actual construction site, after visually checking that the screw head of the steel screw rod 13 exceeds the steel nut, it indicates that the steel screw rod and the nut 14 have reached the requirement of reliable force transmission, and mortar can be spread for laying the next layer of wall tiles.

[0046] Furthermore, the embedded steel bar 3 is parallel to and abuts against the outer longitudinal bars of the through-length steel bar or mesh 4. At least two thin steel sheets 10 are arranged on each embedded steel bar 3. The number of thin steel sheets 10 can be set according to the length of the steel bar connection to ensure that the steel bar connection is stable, non-deformed and evenly stressed.

[0047] Furthermore, if Figure 5As shown, the thin steel sheet 10 is bent and wrapped around the outer longitudinal bars of the embedded steel bars 3 and the full-length steel bars or the mesh 4, the screw rod 13 passes through the superimposed first hole groove 11 and the second hole groove 12, and the nut 14 is used to tighten the screw rod 13, thereby forming a tight connection between the embedded steel bars 3 and the outer longitudinal bars of the full-length steel bars or the mesh 4.

[0048] Furthermore, the steel bars of the inner leaf masonry wall 1 and the outer leaf masonry wall 2 and the thin steel sheets 10 connecting the steel bars are all built in the mortar.

[0049] In this embodiment, the application process of a connector for inner and outer leaf wall steel bars of a sandwich masonry wall is as follows:

[0050] Step 1: At the construction site, the sandwich masonry wall is built to the elevation, the inner leaf wall is rebar-planted, the outer longitudinal bars of the through-length steel bars or steel mesh in the horizontal mortar joints of the outer leaf wall are flatly connected, and the open-hole slot thin steel sheet 10 of the steel bar connector 5 is bent and passed through the two steel bars to be connected;

[0051] Step 2: The thin steel sheet 10 is bent into shape;

[0052] Step 3: The steel screw passes through the hole of the thin steel sheet 10;

[0053] Step 4: Tighten the steel nut;

[0054] Step 5: After the construction of the steel bar connector 5 is completed and the head of the steel screw 13 is visually checked to be beyond the steel nut, mortar can be spread to lay the next layer of wall tiles.

[0055] In summary, the technical solution of this application has the following beneficial effects:

[0056] 1. The utility model thin steel sheet steel bar connector realizes the reliable connection between the through-length horizontal steel bars or mesh in the mortar joints of the outer leaf wall and the embedded steel bars on the inner leaf wall, so as to ensure that the horizontal forces such as wind load and earthquake action of the outer leaf wall are transmitted to the inner leaf wall and the main structure.

[0057] 2. The utility model adopts a thin steel sheet with a hole groove as a bendable connecting piece. The steel sheet is partially thickened at the hole groove to ensure the shear strength and rigidity when it is connected with the steel screw and steel nut. The structure is simple and the processing is convenient.

[0058] 3. The embedded steel bars of the inner leaf wall are placed parallel to the outer longitudinal bars of the full-length steel bars or steel mesh in the horizontal mortar joints of the outer leaf wall. The thin steel sheet is bent and wrapped around the embedded steel bars, full-length steel bars or steel mesh that need to be connected. The steel screw passes through the holes in the thin steel sheet and the steel nut is tightened. The steel bar connection construction is convenient, and it is easy to check the construction quality of the connector.

[0059] The above are merely exemplary embodiments of the present application and are not intended to limit the protection scope of the present application. The protection scope of the present application is determined by the appended claims.

Claims

1. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall, characterized in that: include: A thin steel sheet can be bent to connect the embedded steel bars of the inner leaf wall and the through-length steel bars or mesh in the mortar joint of the outer leaf wall, and the two ends of the thin steel sheet are respectively provided with a first hole groove and a second hole groove; A fixing assembly, comprising a screw and a nut, wherein the screw passes through the first hole slot and the second hole slot, and the nut is used to tighten the screw to fix the thin steel sheet; Wherein, the first hole slot and the second hole slot have a thickened design; The size of the thin steel sheet is adapted to the diameter and required length of the connected steel bars.

2. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The thin steel sheet is made of stainless steel or galvanized steel sheet.

3. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The upper surface of the thin steel sheet is designed to be in a straight line shape, and the thin steel sheet as a whole is thick at both ends and thin in the middle.

4. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The screw rod is a steel screw rod, and the nut is a steel nut.

5. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The outer side of the screw rod is provided with an external thread, and the first hole groove and the second hole groove are provided with an internal thread matched with the external thread.

6. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The top of the screw rod is provided with a screw head with a diameter larger than the diameters of the first hole groove and the second hole groove.

7. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 1, characterized in that: At least two thin steel sheets are arranged on each of the embedded steel bars.

8. A connector for inner and outer leaf reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The embedded steel bars are parallel to and abut against the outer longitudinal bars of the full-length steel bars or mesh.

9. A connector for inner and outer leaf wall reinforcements of a sandwich masonry wall according to claim 8, characterized in that: The thin steel sheet is bent and wrapped around the outer longitudinal bars of the embedded steel bars and the full-length steel bars or mesh, the screw rod passes through the superimposed first and second hole slots, and the nut is used to tighten the screw rod, thereby forming a tight connection between the embedded steel bars and the outer longitudinal bars of the full-length steel bars or mesh.

10. A connector for inner and outer leaf reinforcements of a sandwich masonry wall according to claim 1, characterized in that: The inner and outer leaf wall reinforcements and the thin steel sheets connecting the reinforcements are all built in the mortar.

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