A sliding hinge connection structure for a lightweight wall panel and its construction method

Abstract

A sliding hinge connection structure for a lightweight wall panel and its construction method, including a structural column, a structural beam, a floor slab, and a lightweight wall panel. A top channel steel is provided on the upper side of the top surface of the lightweight wall panel. The lower part of the structural beam is placed in the top channel steel. A top vertical connecting piece is fixedly connected to the lower side surface of the top channel steel. A hook bolt is fixedly connected through a hole drilled through the top end of the lightweight wall panel. The upper end of the lightweight wall panel is slidably connected to the structural beam through the top channel steel. A bottom angle steel is provided at the bottom end of the lightweight wall panel. Bottom vertical connecting pieces are arranged at intervals on the bottom angle steel. The bottom angle steel is fixedly connected to the floor slab through a floor slab embedded component. The lightweight wall panel is flexibly connected to the inner side of the structural column. The present invention proposes to construct the upper and lower boundary conditions of the ALC wall panel into a connection state of one end sliding and one end hinged, realizing the deformation coordination between the ALC wall panel and the steel frame, and having the characteristics of safety, applicability, durability, etc.

Description

Technical Field

[0001] The present invention relates to a connection node between a wall panel and a structure, in particular to a sliding hinge structure between an ALC wall panel and a steel frame suitable for prefabricated steel structure buildings and a construction method thereof. Background Art

[0002] At present, prefabricated buildings are developing rapidly, but many problems need to be studied and solved. Among them, the connection between the enclosure ALC wall panel and the structure is a key content. Due to the good elastoplasticity of the steel frame itself, relatively larger inter-story lateral displacements are allowed compared with reinforced concrete structures. However, the ALC wall panel has a relatively large stiffness, and the allowable bending or shear deformation for the wall panel to crack is small, making it difficult to coordinate and match the lateral displacement stiffness between the steel frame and the ALC wall panel.

[0003] In order to enable the ALC wall panel to well adapt to the lateral displacement deformation of the main structure, adopting "flexible connection" is widely considered to be a reasonable connection method between the wall panel and the main structure. And how to achieve flexible connection while ensuring the safety and reliability of the connection is an important research topic. The relatively advanced and reasonable node form proposed at present is the self-centering seismic rocking node, but its structure is relatively complex, the precision requirements for fabrication and installation are relatively high, and repair treatment is also required at the node part. Summary of the Invention

[0004] The object of the present invention is to provide a sliding hinge connection structure for a lightweight wall panel and a construction method thereof, and to solve the technical problems that the flexible connection nodes for the connection between the existing ALC wall panel and the steel frame are complex in structure, have relatively high precision requirements for fabrication and installation, and need to be repaired at the node part.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A sliding hinge connection structure for a lightweight wall panel includes a structural steel frame formed by enclosing structural columns on the left and right sides, a structural cross beam on the upper side, and a floor slab on the lower side, and further includes a lightweight wall panel located inside the structural steel frame.

[0007] A horizontal top channel steel is provided along the width direction of the top surface of the lightweight wall panel. The opening of the top channel steel faces upward and is centered in the thickness direction of the wall panel. The lower part of the structural beam is placed in the top channel steel and is clamped with it. A group of top vertical connectors are fixedly connected to the lower side surface of the top channel steel at intervals along the length direction of the top channel steel. The outer side of the top end of the lightweight wall panel is closely attached to the inner side surface of the top vertical connector. A hook bolt is fixedly connected through a hole drilled through the top end of the lightweight wall panel. The hook bolt is arranged on the left or right side of the top vertical connector. Both ends of the hook bolt extend out of the inner and outer sides of the lightweight wall panel. The inner end of the hook bolt is anchored by a nut, and the outer end of the hook bolt is bent to form a hook that is stuck on the outer side surface of the top vertical connector. The upper end of the lightweight wall panel is slidably connected to the structural beam through the top channel steel.

[0008] A horizontal bottom angle steel corresponding to the top vertical connector one by one is connected along the width direction of the bottom end of the lightweight wall panel. The opening of the bottom angle steel faces inward. The outer side of the bottom end of the lightweight wall panel is clamped at the inner corner of the bottom angle steel. A group of bottom vertical connectors are fixedly connected to the outer side surface of the bottom angle steel at intervals along the length direction of the bottom angle steel. The bottom angle steel includes a horizontal plate and a vertical plate. The bottom of the bottom vertical connector is closely attached to the outer side surface of the vertical plate and is fixedly connected to it. The top of the bottom vertical connector is closely attached to the outer side surface of the lightweight wall panel and is bolted through a horizontal embedded bolt pre-embedded in the lightweight wall panel.

[0009] The width of the horizontal plate is greater than the width of the lightweight wall panel. The inner end of the horizontal plate extends out of the inner side of the lightweight wall panel to form an extension part. The extension part is fixedly connected to the floor through a floor embedded component. The floor embedded component is arranged corresponding to the bottom vertical connector one by one. The floor embedded component includes a horizontal embedded plate and a vertical connecting bolt. The upper side surface of the outer end of the horizontal embedded plate is fixedly connected to the lower side of the extension part. The inner end of the horizontal embedded plate is fixedly connected to the floor through the vertical connecting bolt passing through the hole.

[0010] A flexible connection filled with elastic material is provided between the outermost lightweight wall panel and the inner side of the structural column. The lower side of the extension part of the bottom angle steel is padded by the horizontal embedded plate to form a gap between the bottom angle steel and the floor. The gap is filled with mortar material.

[0011] The structural beam is an H-shaped steel. The lower flange plate of the H-shaped steel is stuck at the bottom of the groove of the top channel steel. The width of the lower flange plate is adapted to the groove width of the top channel steel.

[0012] The lightweight wall panel is formed by splicing a group of ALC unit walls on the left and right.

[0013] The top vertical connector is made of steel plate, and one is provided for each ALC unit wall.

[0014] The bottom vertical connecting piece is bent from a steel plate into three parts: a top part, a middle part, and a bottom part. The middle part is a transition part between the top part and the bottom part. The bottom vertical connecting piece is directly below the top vertical connecting piece.

[0015] The structural column is an H-shaped steel or a flat steel pipe.

[0016] The bottom angle steel is an unequal-leg angle steel, and the width of the horizontal plate is greater than the height of the vertical plate.

[0017] The elastic material is foaming glue.

[0018] A construction method for a sliding hinge connection structure of a lightweight wall panel is as follows:

[0019] Step 1: Process the structural column, structural beam, lightweight wall panel, top vertical connecting piece, and bottom vertical connecting piece in the factory. At the top of the lightweight wall panel, bolt holes for hook bolts are opened at intervals according to the design requirements and the hook bolts are inserted. At the bottom, the screw rods of the horizontal embedded bolts are buried corresponding to the top. At the same time, process the top vertical connecting piece and weld it to the lower side of the top channel steel. Bolt holes for the horizontal embedded bolts are opened on the bottom vertical connecting piece;

[0020] Step 2: Construct the structural column, structural beam, and floor slab on-site. The screw rods of the vertical connecting bolts are embedded in the floor slab according to the design requirements. Then, the horizontal embedded plate with holes is passed through the screw rods and placed on the upper side of the floor slab and tightened with the nuts of the embedded vertical connecting bolts;

[0021] Step 3: Clamp the top channel steel with the top vertical connecting piece with the opening facing upwards to the lower flange of the structural beam. Press the outer side of the lightweight wall panel against the inner side of the top vertical connecting piece. Then, rotate the screw rod of the hook bolt to find the right angle and tighten the nut on the inner side of the lightweight wall panel to fix it, so that the hook bolt is obliquely stuck on the outer side of the top vertical connecting piece, forming a slidable connection at the top of the wall panel;

[0022] Step 4: Connect the protruding part of the bottom angle steel and the inner end of the horizontal embedded plate by fillet welding to form the foundation for the bottom point-supported hinge rooting of the lightweight wall panel;

[0023] Step 5: Place the bottom of the lightweight wall panel on the bottom angle steel, and the outer corner of the lightweight wall panel closely adheres to the inner side of the bottom angle steel;

[0024] Step 6: Align the horizontal embedded bolts with the bolt holes of the horizontal embedded bolts on the bottom vertical connecting piece and then tighten the nuts of the horizontal embedded bolts to form the upper bolt connection of the bottom vertical connecting piece and the bottom point-supported hinge connection of the lightweight wall panel;

[0025] Step 7: Connect the inner side of the bottom of the bottom vertical connecting piece and the outer side of the vertical plate of the bottom angle steel by fillet welding;

[0026] Step 8: Fill the gaps at the upper and lower connection positions between the lightweight wall panels and the structure with mortar materials.

[0027] Compared with the prior art, the present invention has the following features and beneficial effects:

[0028] The sliding hinge connection structure of the present invention includes the top end of the ALC wall panel. The wall panel is connected to the structural cross beam through a channel steel and a hook bolt, abandoning the technology in the prior art where the U-shaped opening of the channel steel faces downward to clamp the ALC wall panel. Instead, the U-shaped opening of the channel steel faces upward to clamp the lower flange of the structural cross beam, so that the ALC wall panel can slide and swing freely along the cross beam; at the bottom end of the ALC wall panel, the wall panel and the floor slab form a point-supported hinge connection through a bottom vertical connecting piece, a bottom angle steel and a floor slab embedded component, so that the upper and lower boundary conditions of the ALC wall panel form a connection state of one end sliding and one end hinged.

[0029] For the ALC wall panel adjacent to the structural column in the present invention, an elastic sealing material such as foaming glue is filled between the column and the wall panel to form a flexible connection. In this way, the ALC wall panel can well adapt to a large lateral displacement between structural layers, preventing the wall from cracking when the inter-story displacement angle is large and affecting the use function.

[0030] The present invention provides a new connection technology between ALC wall panels and the structure for prefabricated buildings, especially prefabricated steel structure buildings, clearly proposing to construct the upper and lower boundary conditions of the ALC wall panel into a connection state of one end sliding and one end hinged, clearly realizing the deformation coordination between the ALC wall panel and the steel frame, and having the characteristics of safety, applicability, durability, etc. It has good promotion and practical value, and good economic benefits will be generated after extensive promotion and application. Description of the Drawings

[0031] The following further describes the present invention in detail with reference to the drawings.

[0032] Figure 1 It is a schematic diagram of the connection between the lightweight wall panel and the steel frame of the present invention.

[0033] Figure 2 is Figure 1 An enlarged view of the sliding connection at A in

[0034] Figure 3 is Figure 2 A schematic structural diagram of the C-C section in

[0035] Figure 4 is Figure 1 An enlarged view of the hinged connection at B in

[0036] Figure 5 is Figure 4 A schematic structural diagram of the D-D section in

[0037] Figure 6 is Figure 5 The structural schematic diagram of the E-E section in it.

[0038] Reference numerals in the drawings: 1 - Structural column, 2 - Structural cross beam, 3 - Top channel steel, 4 - Hook bolt, 5 - Top vertical connecting piece, 6 - Elastic material, 7 - Lightweight wall panel, 8 - Bottom vertical connecting piece, 9 - Bottom angle steel, 91 - Horizontal plate, 92 - Vertical plate, 10 - Floor slab, 11 - Horizontal embedded bolt, 12 - Horizontal embedded plate, 13 - Vertical connecting bolt, 14 - Mortar material. Specific implementation mode

[0039] See the embodiment in Figures 1-6 As shown, a sliding hinge connection structure for a lightweight wall panel includes a structural steel frame formed by enclosing a structural column 1 on the left and right sides, a structural cross beam 2 on the upper side, and a floor slab 10 on the lower side, and further includes a lightweight wall panel 7 located inside the structural steel frame. The lightweight wall panel 7 is formed by splicing a group of ALC unit walls on the left and right. In this embodiment, there are a total of five unit wall panels.

[0040] A horizontal top channel steel 3 is provided along the width direction of the top surface of the lightweight wall panel 7 throughout the length. The opening of the top channel steel 3 faces upward and is centered in the thickness direction of the wall panel. The lower part of the structural cross beam 2 is placed in the top channel steel 3 and is clamped with it. A group of top vertical connecting pieces 5 arranged at intervals along the length direction of the top channel steel 3 are fixedly connected to the lower surface of the top channel steel 3. The outer side of the top end of the lightweight wall panel 7 is closely attached to the inner surface of the top vertical connecting piece 5. A hook bolt 4 is fixedly connected through a hole drilled through the top end of the lightweight wall panel 7. The hook bolt 4 is arranged on the left or right side of the top vertical connecting piece 5. Both ends of the hook bolt 4 extend out of the inner and outer sides of the lightweight wall panel. The inner end of the hook bolt 4 is anchored by a nut, and the outer end of the hook bolt is bent to form a hook stuck on the outer surface of the top vertical connecting piece 5. The upper end of the lightweight wall panel 7 is slidably connected to the structural cross beam 2 through the top channel steel.

[0041] In this embodiment, the structural column 1 is an H-shaped steel or a flat steel pipe. The structural cross beam 2 is an H-shaped steel. The lower flange plate of the H-shaped steel is clamped at the bottom of the top channel steel 3, and the width of the lower flange plate is adapted to the groove width of the top channel steel 3. The top vertical connecting piece 5 is made of a steel plate, and one is provided for each ALC unit wall, with a total of five.

[0042] At the bottom end of the lightweight wall panel 7, a horizontal bottom angle steel 9 corresponding to the top vertical connecting member 5 one by one is connected longitudinally along the width direction of the wall panel. The opening of the bottom angle steel 9 faces inward. The outer side of the bottom end of the lightweight wall panel 7 is clamped at the inner corner of the bottom angle steel 9. A group of bottom vertical connecting members 8 are fixedly connected to the outer surface of the bottom angle steel 9 at intervals along the length direction of the bottom angle steel 9. The bottom angle steel 9 includes a horizontal plate 91 and a vertical plate 92. The bottom of the bottom vertical connecting member 8 closely adheres to the outer surface of the vertical plate 92 and is fixedly connected thereto. The top of the bottom vertical connecting member 8 closely adheres to the outer surface of the lightweight wall panel 7 and is bolted through a horizontal embedded bolt 11 pre-embedded in the lightweight wall panel.

[0043] In this embodiment, the bottom angle steel 9 is an unequal angle steel, and the width of the horizontal plate 91 is greater than the height of the vertical plate 92.

[0044] In this embodiment, the bottom vertical connecting member 8 is bent from a steel plate into three parts: a top, a middle, and a bottom. The middle part is a transition part between the top and the bottom. The bottom vertical connecting member 8 is directly below the top vertical connecting member 5. One is provided for each ALC unit wall, and there are five in total.

[0045] The width of the horizontal plate 91 is greater than the width of the lightweight wall panel 7. The inner end of the horizontal plate 91 extends out of the inner side of the lightweight wall panel to form an extended part. The extended part is fixedly connected to the floor slab 10 through a floor slab embedded component. The floor slab embedded component is provided corresponding to the bottom vertical connecting member 8 one by one. The floor slab embedded component includes a horizontal embedded plate 12 and a vertical connecting bolt 13. The upper side surface of the outer end of the horizontal embedded plate 12 is fixedly connected to the lower side of the extended part. The inner end of the horizontal embedded plate 12 is fixedly connected to the floor slab 10 through the vertical connecting bolt 13 passing through an opening. In this embodiment, there are five floor slab embedded components in total.

[0046] Between the innermost lightweight wall panel 7 and the inner side of the structural column 1 is a flexible connection filled with an elastic material 6. The lower side of the extended part of the bottom angle steel 9 is padded by the horizontal embedded plate 12 to form a gap between the bottom angle steel 9 and the floor slab 10. The gap is filled with a mortar material 14. The elastic material 6 is foaming glue.

[0047] The construction method of this sliding hinge connection structure of the lightweight wall panel is as follows:

[0048] Step 1: Process the structural column 1, structural beam 2, lightweight wall panel 7, top vertical connecting member 5, and bottom vertical connecting member 8 in the factory. At the top of the lightweight wall panel 7, bolt holes for the hook bolts 4 are opened at intervals according to the design requirements and the hook bolts are inserted. At the bottom, the screw rods of the horizontal embedded bolts 11 are buried corresponding to the top. At the same time, process the top vertical connecting member 5 and weld it to the lower side of the top channel steel 3. Process the bottom vertical connecting member 8 and open the bolt holes for the horizontal embedded bolts 11.

[0049] Step 2: For the on-site construction of structural columns 1, structural beams 2 and floor slabs 10, embed the screw rods of the vertical connecting bolts 13 in the floor slab 10 according to the design requirements. Then, pass the holes in the horizontal embedded plate 12 through the screw rods and place it on the upper side of the floor slab 10, and tighten it with the nuts of the embedded vertical connecting bolts 13.

[0050] Step 3: Hold the top channel steel 3 with the top vertical connector 5 facing upwards and clamp the lower flange of the structural beam 2. Keep the outer side of the lightweight wall panel 7 close to the inner side of the top vertical connector 5. Then, rotate the screw rod of the hook bolt 4 to find the right angle and tighten the nut on the inner side of the lightweight wall panel 7 to fix it, so that the hook bolt 4 is obliquely clamped on the outer side of the top vertical connector 5, forming a slidable connection at the top of the wall panel.

[0051] Step 4: Connect the extended part of the bottom angle steel 9 and the inner end of the horizontal embedded plate 12 by fillet welding to form the foundation for the bottom point-supported hinged root of the lightweight wall panel.

[0052] Step 5: Place the bottom of the lightweight wall panel 7 on the bottom angle steel, and make the outer corner of the lightweight wall panel close to the inner side of the bottom angle steel.

[0053] Step 6: Align the horizontal embedded bolts 11 with the bolt holes of the horizontal embedded bolts 11 on the bottom vertical connector 8, and then tighten the nuts of the horizontal embedded bolts 11 to form the upper bolt connection of the bottom vertical connector 8 and the bottom point-supported hinged connection of the lightweight wall panel 7.

[0054] Step 7: Connect the inner side of the bottom of the bottom vertical connector 8 and the outer side of the vertical plate 92 of the bottom angle steel 9 by fillet welding.

[0055] Step 8: Fill the gaps at the upper and lower connection positions between the lightweight wall panel 7 and the structure with mortar material 14.

Claims

1. A sliding hinge connection structure for a lightweight wall panel, comprising a structural steel frame formed by structural columns (1) on the left and right sides, a structural cross beam (2) on the upper side, and a floor slab (10) on the lower side, and further comprising a lightweight wall panel (7) located inside the structural steel frame. Characterized in that: A horizontal top channel steel (3) is provided along the entire width direction of the lightweight wall panel (7) on the upper side of the top end face. The opening of the top channel steel (3) faces upward and is centered in the thickness direction of the wall panel. The lower part of the structural cross beam (2) is placed in the top channel steel (3) and is clamped with it. A group of top vertical connectors (5) are fixedly connected to the lower side surface of the top channel steel (3) at intervals along the length direction of the top channel steel (3). The outer side of the top end part of the lightweight wall panel (7) is closely attached to the inner surface of the top vertical connector (5). A hook bolt (4) is fixedly connected through a hole drilled through the top end part of the lightweight wall panel (7). The hook bolt (4) is arranged on the left or right side of the top vertical connector (5). Both ends of the hook bolt (4) respectively extend out of the inner and outer sides of the lightweight wall panel. The inner end of the hook bolt (4) is anchored by a nut, and the outer end of the hook bolt is bent to form a hook that is stuck on the outer surface of the top vertical connector (5). The upper end part of the lightweight wall panel (7) is slidably connected to the structural cross beam (2) through the top channel steel. A horizontal bottom angle steel (9) corresponding to each top vertical connector (5) is connected along the entire width direction of the lightweight wall panel (7) at the bottom end part. The opening of the bottom angle steel (9) faces inward. The outer side of the bottom end part of the lightweight wall panel (7) is clamped at the inner corner of the bottom angle steel (9). A group of bottom vertical connectors (8) are fixedly connected to the outer side of the bottom angle steel (9) at intervals along the length direction of the bottom angle steel (9). The bottom of the bottom vertical connector (8) is closely attached to the outer side of the vertical plate (92) of the bottom angle steel (9) and is fixedly connected to it. The top of the bottom vertical connector (8) is closely attached to the outer side of the lightweight wall panel (7) and is bolted through a horizontal embedded bolt (11) pre-embedded in the lightweight wall panel (7). The width of the horizontal plate (91) of the bottom angle steel (9) is greater than the width of the lightweight wall panel (7). The inner end part of the horizontal plate (91) extends out of the lightweight wall panel and is fixedly connected to the floor slab (10) through a horizontal embedded plate (12) corresponding to each bottom vertical connector (8). The upper side of the outer end part of the horizontal embedded plate (12) is fixedly connected to the lower side of the horizontal plate (91). The inner end part of the horizontal embedded plate (12) is fixedly connected to the floor slab (10) through a vertical connecting bolt (13). The connection between the outermost lightweight wall panel (7) and the structural column (1) is a flexible connection filled with an elastic material (6). The gap between the bottom angle steel (9) and the floor slab (10) is filled with a mortar material (14). The lightweight wall panel (7) is formed by splicing a group of ALC unit walls on the left and right. The top vertical connector (5) is made of a steel plate, and one is provided for each ALC unit wall. The structural cross beam (2) is an H-shaped steel, the lower flange plate of the H-shaped steel is clamped at the bottom of the top channel steel (3), and the width of the lower flange plate is adapted to the groove width of the top channel steel (3).

2. The sliding hinge connection structure of the lightweight wall panel according to claim 1, characterized in that: The bottom vertical connecting piece (8) is bent by a steel plate into three parts: the top, the middle and the bottom. The middle part is the transition part between the top and the bottom. The bottom vertical connecting piece (8) is directly below the top vertical connecting piece (5).

3. The sliding hinge connection structure of the lightweight wall panel according to claim 1, characterized in that: The structural column (1) is an H-shaped steel or a flat steel pipe.

4. The sliding hinge connection structure of the lightweight wall panel according to claim 1, characterized in that: The bottom angle steel (9) is an unequal angle steel, and the width of the horizontal plate (91) is greater than the height of the vertical plate (92).

5. The sliding hinge connection structure of the lightweight wall panel according to claim 1, characterized in that: The elastic material (6) is foaming glue.

6. A construction method for the sliding hinge connection structure of the lightweight wall panel according to any one of claims 1-5, characterized in that, the construction steps are as follows: Step 1, process the structural column (1), the structural cross beam (2), the lightweight wall panel (7), the top vertical connecting piece (5) and the bottom vertical connecting piece (8) in the factory. The top of the lightweight wall panel (7) is provided with bolt holes for the hook bolts (4) at intervals according to the design requirements and the hook bolts are inserted. The screw rods of the horizontal embedded bolts (11) are buried at the bottom corresponding to the top; at the same time, process the top vertical connecting piece (5) and weld it on the lower side of the top channel steel (3); process the bottom vertical connecting piece (8) and open the bolt holes for the horizontal embedded bolts (11). Step 2, construct the structural column (1), the structural cross beam (2) and the floor slab (10) on site. The screw rods of the vertical connecting bolts (13) are embedded in the floor slab (10) according to the design requirements. Then, the opening on the horizontal embedded plate (12) is passed through the screw rod and placed on the upper side of the floor slab (10) and tightened by the nuts of the embedded vertical connecting bolts (13). Step 3, the top channel steel (3) with the top vertical connecting piece (5) is placed with the opening facing up and clamped on the lower flange of the structural cross beam (2). The outer side of the lightweight wall panel (7) is closely attached to the inner side of the top vertical connecting piece (5). Then, rotate the screw rod of the hook bolt (4) to find the angle and tighten the nut on the inner side of the lightweight wall panel (7) to fix it, so that the hook bolt (4) is obliquely clamped on the outer side of the top vertical connecting piece (5) to form a slidable connection at the top of the wall panel. Step 4, connect the extending part of the bottom angle steel (9) and the inner end part of the horizontal embedded plate (12) by fillet welding to form the foundation for the bottom point-supported hinge rooting of the lightweight wall panel. Step 5, place the bottom of the lightweight wall panel (7) on the bottom angle steel, and the outer corner of the lightweight wall panel is closely attached to the inner side of the bottom angle steel. Step 6: Align the horizontal embedded bolts (11) with the bolt holes of the horizontal embedded bolts (11) on the bottom vertical connector (8), and then tighten the nuts of the horizontal embedded bolts (11) to form the upper bolt connection of the bottom vertical connector (8), and the bottom of the lightweight wall panel (7) is connected by point support hinge; Step 7: Connect the inner side of the bottom of the bottom vertical connector (8) and the outer side of the vertical plate (92) of the bottom angle steel (9) by fillet welding; Step 8: Fill the gap at the upper and lower connection positions between the lightweight wall panel (7) and the structure with mortar material (14).

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