Full-prefabricated lattice type thermal insulation layer fabricated composite wallboard and construction method thereof

Abstract

The invention discloses a full-prefabricated lattice type thermal insulation layer fabricated composite wallboard and a construction mode thereof.The full-prefabricated lattice type thermal insulation layer fabricated composite wallboard comprises a wall body of a three-layer structure and H-shaped steel hidden beams, the wall body sequentially comprises an outer page concrete layer, a lattice type thermal insulation layer and an inner page concrete layer from outside to inside, and the lattice type thermal insulation layer takes a metal three-dimensional truss as a supporting framework; the truss cavity is filled with a vacuum heat insulation plate and a rock wool plate, the outer concrete layer and the inner concrete layer are formed by pouring concrete through built-in steel bar meshes, shear-resistant studs are arranged at the top ends and the bottom ends of the outer concrete layer and the inner concrete layer at intervals, and the wall is anchored with hidden beams at the top and the bottom through the shear-resistant studs. The structure is fully prefabricated in a factory, on-site cast-in-place connection is not needed, the structure has the heat preservation performance and the shear resistance performance, and the structure is particularly suitable for scenes with high requirements for efficient construction, structural stability and energy-saving performance in industrial buildings.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated buildings, and in particular to a fully prefabricated thermal insulation layer prefabricated composite wall panel, which is fully prefabricated in a factory and does not require on-site cast-in-place connection. Background Art

[0002] The existing assembled sandwich wall panels have the following technical defects: Insulation layer structural stability is insufficient: The insulation layer of traditional sandwich wall panels is mostly a flat filling structure, lacking three-dimensional support, and is prone to cracking or deformation due to stress concentration; The on-site construction process is complicated: the existing wall panels need to be connected by secondary pouring or welding, which takes a long time and relies on manual operation, resulting in low efficiency; Difficulties in handling pre-buried pipelines and connection parts: The joints between wall panels and pipelines, hidden beams and other components require on-site post-pour of concrete, which is a cumbersome process and difficult to control quality. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides a fully prefabricated thermal insulation layer assembled composite wall panel, which achieves efficient construction and comprehensive improvement of structural performance through factory integrated prefabrication and dry connection technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: The fully prefabricated lattice insulation layer assembled composite wall panel includes a three-layer wall structure and an I-beam hidden beam. The wall is composed of an outer concrete layer, a lattice insulation layer and an inner concrete layer from the outside to the inside. The lattice insulation layer is supported by a metal three-dimensional truss, and the truss cavity is filled with vacuum insulation panels and rock wool boards. The outer concrete layer and the inner concrete layer are respectively formed by pouring concrete with built-in steel mesh. Shear studs are arranged at intervals at the top and bottom of the outer concrete layer and the inner concrete layer. The shear studs anchor the wall to the top and bottom hidden beams.

[0005] A further improvement is that steel pipes are embedded in the top and bottom sides of the outer concrete layer and the inner concrete layer respectively, and protruding connecting bolts are embedded in the other side, and the connecting bolts of adjacent wall panels are inserted into the steel pipes to connect the adjacent wall panels.

[0006] A further improvement is that holes are opened on the concealed beams for connecting the wall panels with the upper and lower building panels.

[0007] A further improvement is that the outer page concrete layer and the inner page concrete layer are cast and formed by C30 concrete.

[0008] A further improvement is that the metal three-dimensional truss is welded with Q235 cold-bent steel.

[0009] A further improvement is that the metal three-dimensional truss has frame edges around it, making the structure more stable and greatly improving the shear resistance and deformation resistance.

[0010] A further improvement is that the shear stud spacing is ≤300 mm.

[0011] A further improvement is that the vacuum insulation panel is located on the outside close to the outer concrete layer, and the rock wool panel is located on the inside of the vacuum insulation panel.

[0012] Construction method of fully prefabricated lattice insulation layer assembled composite wall panel, (1) Prefabricated outer concrete layer: The internal steel mesh is cast by concrete. During the process, shear studs are buried at intervals at the top and bottom of the outer concrete layer, steel pipes are buried at the top and bottom sides of the outer concrete layer, and connecting bolts are buried at the corresponding positions on the other side; (2) Assembling the lattice insulation layer: first weld the cold-bent steel into a three-dimensional truss, place it on the solidified outer concrete layer, and fill the truss cavity with vacuum insulation panels and rock wool boards; (3) Casting the inner concrete layer: The lattice insulation layer is cast with concrete and a steel mesh is built in. During the process, shear bolts are buried at intervals at the top and bottom of the inner concrete layer, steel pipes are buried at the top and bottom sides of the inner concrete layer, and connecting bolts are buried at the corresponding positions on the other side. (4) Connecting I-beam hidden beams: Place the I-beams at the top and bottom ends, and use shear bolts to anchor the I-beams to the outer and inner concrete layers. Beneficial Effects

[0013] 1. The metal trusses of the lattice insulation layer provide three-dimensional support, greatly improving the shear and deformation resistance. The truss cavity is filled with vacuum insulation panels and rock wool panels to form a composite structure with both thermal insulation and shear resistance, which is energy-saving and quality-controlled.

[0014] Second, the factory fully prefabricates the integrated production of wall panels, concealed beams and connectors. Only bolt connections are required on site, reducing on-site operation time by more than 80% and ensuring the accuracy of pipeline pre-embedding and node strength.

[0015] 3. Dry connection system: Adjacent wall panels are connected to steel pipes through high-strength connecting bolts, and hidden beams are used to connect the wall panels to the upper and lower building floors, without the need for grouting or welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view structural schematic diagram of the present invention; Figure 2 Schematic diagram of the truss of the lattice insulation layer. DETAILED DESCRIPTION

[0017] like Figure 1 , Figure 2 As shown, the fully prefabricated lattice insulation layer assembled composite wall panel of the present invention includes a three-layer wall and an I-beam hidden beam. The wall is composed of an outer concrete layer 1, a lattice insulation layer 2 and an inner concrete layer 3 from the outside to the inside. The lattice insulation layer 2 is supported by a metal three-dimensional truss 21, and the truss cavity is filled with a vacuum insulation board 22 and a rock wool board 23. The outer concrete layer 1 and the inner concrete layer 3 are respectively cast with concrete using an internal steel mesh 11. Shear bolts 12 are arranged at intervals at the top and bottom of the outer concrete layer and the inner concrete layer. The shear bolts 12 anchor the wall to the top and bottom hidden beams 4. The outer concrete layer 1 and the inner concrete layer 2 are respectively pre-buried with steel pipes 13 on the top and bottom sides, and the other side is pre-buried with protruding connecting bolts. The connecting bolts of adjacent wall panels are inserted into the steel pipes to connect the adjacent wall panels. The hidden beam 4 has holes for connecting the wall panels to the upper and lower building layers.

[0018] Taking the production of a wall panel of standard size (length × height × thickness: 3000mm × 2800mm × 200mm) as an example, the implementation steps are as follows: (1) Prefabricated outer concrete layer: The internal steel mesh is cast with C30 concrete with a thickness of 50 mm. During the process, shear bolts are buried at intervals at the top and bottom of the outer concrete layer. The shear bolts are Φ12 bolts with a spacing of 300 mm. Steel pipes are buried at the top and bottom sides of the outer concrete layer, and connecting bolts are buried at the corresponding position on the other side. (2) Assembling the lattice insulation layer: First, weld Q235 cold-formed steel into a three-dimensional truss, place it on the solidified outer concrete layer, and fill the truss cavity with vacuum insulation panels (60 mm thick) and rock wool boards (40 mm thick); (3) Casting the inner concrete layer: Q235 concrete is cast on the lattice insulation layer, with a built-in steel mesh. During the process, shear bolts are buried at intervals at the top and bottom of the inner concrete layer. The bolts are Φ12 and 300 mm apart. Steel pipes are buried on the top and bottom sides of the inner concrete layer, and connecting bolts are buried at the corresponding positions on the other side. (4) Connecting I-beam hidden beams: Place I-beams (specifications H200×200×8×12) at the top and bottom, and drill holes corresponding to the positions of shear studs. The shear studs anchor the I-beams to the outer and inner concrete layers.

[0019] On-site installation: hoist the composite wall panel to the designated location, insert the high-strength connecting bolt (8.8 grade, M30) into the steel pipe connector of the adjacent wall panel to fix the two wall panels, and control the torque to 400N·m; open a hole on the hidden beam 4, and connect the hidden beam to connect the wall panel with the upper and lower building layers through the expansion bolts.

[0020] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. Fully prefabricated lattice insulation layer assembled composite wall panel, characterized by: The invention comprises a three-layer wall and an I-beam concealed beam. The wall comprises, from the outside to the inside, an outer concrete layer (1), a lattice insulation layer (2) and an inner concrete layer (3). The lattice insulation layer (2) is supported by a metal three-dimensional truss (21). The truss cavity is filled with a vacuum insulation board (22) and a rock wool board (23). The outer concrete layer (1) and the inner concrete layer (3) are respectively formed by pouring concrete with an internal steel mesh (11). Shear studs (12) are arranged at intervals at the top and bottom of the outer concrete layer and the inner concrete layer. The shear studs (12) anchor the wall to the concealed beams (4) at the top and bottom.

2. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The outer concrete layer (1) and the inner concrete layer (2) are respectively pre-buried with steel pipes (13) on the top and bottom sides, and the other sides are pre-buried with protruding connecting bolts, and the connecting bolts of adjacent wall panels are inserted into the steel pipes to connect the adjacent wall panels.

3. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The concealed beam (4) has holes formed therein for connecting the wall panels with the upper and lower building panels.

4. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The outer page concrete layer and the inner page concrete layer are cast and formed by C30 concrete.

5. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The metal three-dimensional truss is welded with Q235 cold-bent steel.

6. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The metal three-dimensional truss is provided with frame edges around it.

7. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The shear stud spacing is ≤300mm.

8. The fully prefabricated lattice insulation layer assembled composite wall panel according to claim 1, characterized in that: The vacuum insulation panel is located on the outer side close to the outer concrete layer, and the rock wool board is located on the inner side of the vacuum insulation panel.

9. The construction method of the fully prefabricated lattice insulation layer assembled composite wall panel is characterized by: (1) Prefabricated outer concrete layer: The internal steel mesh is cast by concrete. During the process, shear studs are buried at intervals at the top and bottom of the outer concrete layer, steel pipes are buried at the top and bottom sides of the outer concrete layer, and connecting bolts are buried at the corresponding positions on the other side; (2) Assembling the lattice insulation layer: first weld the cold-bent steel into a three-dimensional truss, place it on the solidified outer concrete layer, and fill the truss cavity with vacuum insulation panels and rock wool boards; (3) Casting the inner concrete layer: The lattice insulation layer is cast with concrete and a steel mesh is built in. During the process, shear bolts are buried at intervals at the top and bottom of the inner concrete layer, steel pipes are buried at the top and bottom sides of the inner concrete layer, and connecting bolts are buried at the corresponding positions on the other side. (4) Connecting I-beam hidden beams: Place the I-beams at the top and bottom ends, and use shear bolts to anchor the I-beams to the outer and inner concrete layers.

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