Single-sided prefabricated concrete steel wire grid insulation board wall and construction method thereof

Abstract

The present invention relates to a single-sided precast concrete steel wire grid insulation board wall and a construction method thereof, wherein the wall is provided with a single-sided precast concrete steel wire grid insulation board and a cast-in-place concrete inner leaf wall which are consolidated into one body, wherein the single-sided precast concrete steel wire grid insulation board comprises a steel wire grid sandwich insulation board and a precast concrete outer leaf wall, wherein the precast concrete outer leaf wall forms a semi-wrapped structure at the top and bottom surfaces of the insulation material layer near the outer edge. During on-site construction, the structural steel bars of the single-sided precast concrete steel wire grid insulation board and the inner leaf wall are installed in position, the inner steel mesh of the steel wire grid sandwich insulation board is connected and fixed to the structural steel bars by connecting steel bars, the inner template of the inner leaf wall is installed, and the concrete inner leaf wall is cast-in-place between the insulation material layer and the inner template. Since the main reinforcement of the single-sided precast concrete steel wire grid insulation board and the cast-in-place concrete inner leaf wall is more convenient to connect, the connection is more reliable, and the process control is easier, the construction quality of the corresponding cast-in-place wall can be significantly improved.

Description

Technical Field

[0001] The invention relates to a cast-in-place exterior wall body with a prefabricated exterior wall insulation board and a construction method thereof. Background Art

[0002] At present, the common prefabricated exterior wall insulation panels are three-layer sandwich structures, with a wire mesh sandwich insulation panel in the middle and prefabricated concrete inner and outer leaf walls on the inside and outside, which can achieve structural and insulation integration. Because they are prefabricated in the factory, the quality is stable and the on-site concrete construction hours are saved. However, the disadvantage is that the connection operation between this prefabricated exterior wall insulation panel and the main reinforcement of cast-in-place components such as cast-in-place walls and connecting beams is inconvenient. In order to achieve the connection, some of them embed the connectors in the prefabricated inner leaf wall, and some of them need to reserve holes in the prefabricated inner leaf wall, which increases the manufacturing difficulty of the prefabricated exterior wall insulation panel. In addition, the quality and precision of the connection structure of the prefabricated exterior wall insulation panel involved in the on-site construction of the wall are not easy to guarantee, which makes the corresponding wall construction inconvenient and the quality control of the construction process difficult. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a single-sided prefabricated concrete wire mesh insulation board wall and a construction method thereof. During on-site construction, the connection and fixation of the prefabricated exterior wall insulation boards are more convenient and quick, the construction quality is easier to control, and the processing difficulty of the prefabricated exterior wall insulation boards is greatly reduced.

[0004] The main technical solutions adopted by the present invention are:

[0005] A single-sided precast concrete steel wire mesh insulation board wall, comprising a single-sided precast concrete steel wire mesh insulation board and a cast-in-place concrete inner leaf wall combined into one body, the single-sided precast concrete steel wire mesh insulation board comprising an insulation material layer, an inner steel mesh and an outer steel mesh respectively located on the inner and outer sides of the insulation material layer and spaced apart from the insulation material layer (with a spacing between them), and a plurality of inserted wires passing through the insulation material layer and having two ends respectively welded to the inner steel mesh and the outer steel mesh, the outer side of the insulation material layer is a precast concrete outer leaf wall, and the The precast concrete outer leaf wall forms a semi-edge structure at the top and bottom surfaces of the insulation material layer near the outer edge, the outer steel mesh is fixed inside the precast concrete outer leaf wall, the upper and lower edges of the outer steel mesh are bent 90 degrees inward and embedded in the corresponding semi-edge structure, the cast-in-place concrete inner leaf wall is fixed on the inner side of the insulation material layer, and the cast-in-place concrete inner leaf wall is embedded with wall steel bars and / or connecting beam steel bars, which are all located on the inner side of the inner steel mesh and are connected and fixed to the inner steel mesh by pulling steel bars.

[0006] The single-sided precast concrete steel wire mesh insulation board may include four structural types: structural type one, the precast concrete outer leaf wall forms a semi-edge structure at the left and right sides of the insulation material layer near the outer edge, and the left and right edges of the outer steel wire mesh are bent 90 degrees inward and embedded in the corresponding semi-edge structure; structural type two, the left and right sides of the precast concrete outer leaf wall are respectively flush with the left and right sides of the insulation material layer, the left and right ends of the outer steel wire mesh are respectively exposed and cantilevered on the left and right sides of the precast concrete outer leaf wall, and the outer steel wire mesh is fixedly installed with vertical reinforcing steel bars at the left and right ends near the precast concrete outer leaf wall, and the reinforcing steel bars are embedded in the precast concrete outer leaf wall; structural type three, the precast concrete outer leaf wall forms a semi-edge structure at the right side of the insulation material layer near the outer edge, and the right edge of the outer steel wire mesh is bent 90 degrees inward and embedded in In the semi-wrapped structure, the left side surface of the precast concrete outer leaf wall is flush with the left side surface of the thermal insulation material layer, the left end of the outer steel mesh is exposed and cantilevered from the left side of the precast concrete outer leaf wall, and the outer steel mesh is fixedly installed with vertical reinforcing steel bars near the left end of the precast concrete outer leaf wall, and the reinforcing steel bars are built into the precast concrete outer leaf wall; Structural type four, the precast concrete outer leaf wall forms a semi-wrapped structure at the left side surface of the thermal insulation material layer near the outer edge, the left edge of the outer steel mesh is bent 90 degrees inward and built into the semi-wrapped structure, the right side surface of the precast concrete outer leaf wall is flush with the right side surface of the thermal insulation material layer, the right end of the outer steel mesh is exposed and cantilevered from the right side of the precast concrete outer leaf wall, and the outer steel mesh is fixedly installed with vertical reinforcing steel bars near the right end of the precast concrete outer leaf wall, and the reinforcing steel bars are built into the precast concrete outer leaf wall.

[0007] The single-sided precast concrete wire mesh insulation board wall also includes an outer wall corner, which is surrounded by two left and right single-sided precast concrete wire mesh insulation boards at an angle, and is fixedly connected into a whole through a cast-in-place concrete inner leaf wall and an outer cast-in-place concrete layer. The specific structure is: the inner edges of the sides of the two insulation material layers that are close to each other are fitted together, and the inner corners sandwiched by the sides of the two insulation material layers that are close to each other are filled with insulation boards. The space outside the insulation board and within the boundary of the extended intersection of the outer sides of the concrete layers of the two single-sided precast concrete wire mesh insulation boards is the outer cast-in-place concrete layer, and the space within the two insulation material layers is cast-in-place Concrete inner leaf wall, one of the two single-sided precast concrete steel wire mesh insulation panels is of structural type three and the other is of structural type four, or both are of structural type two, or one is of structural type three or four and the other is of structural type two, the outer steel meshes cantilevered to the right and left respectively on the left and right single-sided precast concrete steel wire mesh insulation panels are connected by connecting angle meshes, and reinforcing steel bars are arranged along the folded edges on the inner sides of the folded angles of the connecting angle meshes, and the reinforcing steel bars are fixed to each other and are embedded in the outer cast-in-place concrete layer together with the outer steel meshes cantilevered to the right and left respectively on the left and right single-sided precast concrete steel wire mesh insulation panels.

[0008] Preferably, reinforcing steel bars are arranged along the inner side of the corresponding edge of the outer steel wire mesh which is bent 90 degrees inward, and the reinforcing steel bars are fixedly connected to the outer steel wire mesh and built into the corresponding half-edge structure.

[0009] The precast concrete outer leaf wall is preferably made of fine stone concrete.

[0010] The nominal particle size of the coarse aggregate of the fine stone concrete is preferably not greater than 10 mm.

[0011] The two rows of inserted wires near the top and the bottom of a single-sided prefabricated concrete steel wire grid insulation board are straight inserted wires, and the remaining inserted wires are upper and lower inclined inserted wires.

[0012] The meshes of the outer steel wire mesh are denser than those of the inner steel wire mesh.

[0013] The edge of the thermal insulation material layer may be provided with a notch, and the precast concrete outer leaf wall forms a semi-edge structure on the side of the notch near the outer edge, and the outer wire mesh is arranged along the notch with the edge bent 90 degrees inward and embedded in the corresponding semi-edge structure, and reinforcing steel bars are arranged along the inner side of the 90-degree bend along the folded edge, and the reinforcing steel bars are fixedly connected to the outer wire mesh and embedded in the corresponding semi-edge structure.

[0014] A method for constructing a single-sided precast concrete steel wire grid insulation board wall: the single-sided precast concrete steel wire grid insulation board and the structural steel bars of the inner leaf wall are installed in position, the inner steel mesh of the single-sided precast concrete steel wire grid insulation board is connected and fixed to the structural steel bars by using connecting steel bars, the inner formwork is installed so that the inner formwork and the structural steel bars are kept spaced and relatively fixed, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire grid insulation board and the inner formwork.

[0015] The structural joints (temperature joints) of the wall can be set between two adjacent single-sided precast concrete wire mesh insulation panels, and the distribution and spacing of the structural joints can be based on existing technologies.

[0016] A notch corresponding to the hidden column is provided at the inner end of the single-sided precast concrete wire mesh insulation board adjacent to the hidden column (the notch can usually account for about half of the thickness of the insulation material layer), and a part of the insulation material layer and the concrete layer located outside the insulation material layer (or called precast concrete outer leaf wall) are still retained on the outside of the notch. In the position where the hidden column is provided, the notch corresponding to the hidden column on the single-sided precast concrete wire mesh insulation board adjacent to the hidden column is set at the corresponding position of the casting area of ​​the hidden column, and the structural steel bars of the hidden column are set in the casting area of ​​the hidden column. When pouring concrete, the concrete is simultaneously filled into the casting space including the casting area of ​​the hidden column, and is consolidated in the casting area of ​​the hidden column to form a hidden column integrated with the inner leaf wall.

[0017] A method for constructing a single-sided precast concrete steel wire grid insulation board wall: during the construction of the single-sided wall, the single-sided precast concrete steel wire grid insulation board and the structural steel bars of the inner leaf wall are installed in position, the inner steel mesh of the single-sided precast concrete steel wire grid insulation board is connected and fixed to the structural steel bars by using the connecting steel bars, the inner template is installed so that the inner template and the structural steel bars are kept spaced and relatively fixed, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire grid insulation board and the inner template; the difference between the construction method of the outer wall corner and the single-sided wall is that two left and right single-sided precast concrete steel wire grid insulation boards are arranged to form an angle, one of the two single-sided precast concrete steel wire grid insulation boards is of structural type three and the other is of structural type four, or both are of structural type two, or one is of structural type three or four, The other is structural type two, in which the right overhanging part of the outer steel mesh of the left single-sided precast concrete steel wire grid insulation board and the left overhanging part of the outer steel mesh of the right single-sided precast concrete steel wire grid insulation board are respectively extended to the outer wall corner, so that the inner edges of the sides of the insulation material layers of the left and right single-sided precast concrete steel wire grid insulation boards that are close to each other are fitted together, and insulation boards are additionally filled in the inner corners sandwiched by the sides of the two insulation material layers that are close to each other, and the overhanging parts of the outer steel meshes of the left and right single-sided precast concrete steel wire grid insulation boards that extend to the outer wall corner are connected by connecting angle nets to form the basic shape of the outer wall corner, and reinforcing steel bars are fixedly installed along the folded edge on the inner side of the folded angle of the connecting angle net, inner and outer formworks are installed, and concrete is poured between the insulation material layers of the single-sided precast concrete steel wire grid insulation boards and the inner and outer formworks.

[0018] The beneficial effects of the present invention are:

[0019] Since there is no obstruction of the prefabricated concrete inner leaf wall, the inner wire mesh of the single-sided prefabricated concrete steel wire grid insulation board can be directly and unobstructedly tied and fixed to the steel bars of the cast-in-place exterior wall, connecting beams, etc. during on-site construction. Compared with the positioning and connection operation through upper and lower screw holes on the inner leaf wall of the existing prefabricated exterior wall insulation board, the operation is more convenient, the connection quality is easier to control, and the connection is more reliable. It can ensure that the single-sided prefabricated concrete steel wire grid insulation board is consolidated into a whole with the cast-in-place exterior wall, cast-in-place connecting beam, cast-in-place floor slab and structural column, which not only further improves the quality of the single-sided prefabricated concrete steel wire grid insulation board wall, but also the integrity of the main bearing structure of the entire building is very good.

[0020] Since there is no need to prefabricate inner leaf walls or reserve holes for pulling and connecting the inner wire mesh during construction, the prefabrication method and process of the single-sided prefabricated concrete wire mesh insulation board are greatly simplified, and the weight is lighter and convenient to carry.

[0021] The setting of the semi-wrapped structure improves the bonding strength between the precast concrete outer leaf wall and the insulation material layer in the single-sided precast concrete wire mesh insulation board, and also effectively protects the edge of the insulation material layer.

[0022] The provision of the reinforcing steel bars improves the structural strength of the precast concrete outer leaf wall in the single-sided precast concrete wire mesh insulation board, especially the structural strength of the corners.

[0023] Since the single-sided precast concrete wire mesh insulation board has a variety of structural types to choose from, the insulation board can be used to build various exterior walls in different positions and shapes, while maintaining convenient and quick connection with the main reinforcement of the wall in various positions, making the installation and fixation of both the precast exterior wall insulation board and the reinforcement more efficient and reliable during the construction of the corresponding wall.

[0024] Since the inner leaf walls of the exterior walls are cast in place as a whole, and the joints between the walls and beams, floor slabs, structural columns, etc. are also cast in place as a whole, there are no joint gaps, which can completely eliminate the hidden dangers of leakage and seepage in the assembled walls made of the existing three-layer sandwich prefabricated exterior wall insulation panels. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the longitudinal section structure of the single-sided prefabricated concrete steel wire grid insulation board;

[0026] Figure 2 It is a horizontal cross-sectional schematic diagram of the first embodiment of the single-sided prefabricated concrete steel wire grid insulation board (structural type 1);

[0027] Figure 3 It is a horizontal cross-sectional schematic diagram of a second embodiment of the single-sided prefabricated concrete steel wire grid insulation board (structural type 2);

[0028] Figure 4 A horizontal cross-sectional schematic diagram of a third embodiment of the single-sided prefabricated concrete steel wire mesh insulation board (structural type three);

[0029] Figure 5 This is a structural schematic diagram of the single-sided prefabricated concrete steel wire grid insulation board wall;

[0030] Figure 6 It is a schematic diagram of the structure of the outer wall corner of the single-sided precast concrete steel wire grid insulation board wall;

[0031] Figure 7 It is a structural diagram involving wall structural joints (expansion joints);

[0032] Figure 8 It is a structural diagram involving hidden columns in walls;

[0033] Fig. 9 It is a partial structural schematic diagram of a single-sided precast concrete wire mesh insulation board adjacent to a concealed column. DETAILED DESCRIPTION

[0034] The present invention discloses a single-sided prefabricated concrete steel wire grid insulation board wall (hereinafter referred to as wall), such as Figure 5 As shown, the wall body includes a single-sided prefabricated concrete steel wire mesh insulation board and a cast-in-place concrete inner leaf wall 8 that are integrated into one. Figure 1-4 As shown, the single-sided precast concrete steel wire mesh insulation board includes a steel wire mesh sandwich insulation board and a precast concrete outer leaf wall 1. The precast concrete outer leaf wall 1 is cast in situ in the factory. The steel wire mesh sandwich insulation board includes an insulation material layer 2, an inner steel mesh 3 and an outer steel mesh 4 located on the inner and outer sides of the insulation material layer and separated from the insulation material layer, and a plurality of inserted wires 5 passing through the insulation material layer and welded to the inner steel mesh and the outer steel mesh at both ends. The precast concrete outer leaf wall 1 is fixed to the outer side surface of the insulation material layer and forms a semi-wrapped edge structure 6 at the top and bottom surfaces of the insulation material layer near the outer edge. The distance from the outer steel mesh to the outer side surface of the insulation material layer is less than the thickness of the precast concrete outer leaf wall (referring to the board surface direction perpendicular to the insulation material layer), and the upper and lower edges of the outer steel mesh are bent 90 degrees inward and built into the corresponding semi-wrapped edge structure. The cast-in-place concrete inner leaf wall 8 is fixed on the inner side of the thermal insulation material layer 2, and wall steel bars and / or connecting beam steel bars 9 are built into the cast-in-place concrete inner leaf wall. The wall steel bars and / or connecting beam steel bars 9 are located on the inner side of the inner steel wire mesh and are connected and fixed to the inner steel wire mesh by tensioning steel bars 10.

[0035] The single-sided precast concrete steel wire mesh insulation board is usually used as an external insulation board for external walls and external wall connecting beams, and can also be used as a non-dismantling external support template for cast-in-place walls, and has directionality. Since the inner steel wire mesh is directly exposed to the outside, the inner steel wire mesh can be directly connected and fixed to the main reinforcement of the cast-in-place wall and beam, so the operation is convenient during construction, the connection is reliable, the quality of the formed wall is more guaranteed, and the occurrence of external wall insulation breakage and detachment under normal use conditions can be prevented.

[0036] The precast concrete outer leaf wall is cast in situ during prefabrication in the factory. The precast concrete outer leaf wall at the semi-enclosed edge structure 6 usually covers 30%-50% of the thickness of the insulation material layer, and the thickness of the semi-enclosed edge structure along the insulation material board surface is close to or slightly less than the thickness of the precast concrete outer leaf wall.

[0037] The single-sided precast concrete steel wire grid insulation board can be arranged into the following four structural types:

[0038] Structural type 1, such as Figure 2As shown, the precast concrete outer leaf wall 1 forms a semi-edge structure 6 on the left and right sides of the thermal insulation material layer 2 near the outer edge, and the left and right edges of the outer steel wire mesh are bent 90 degrees inward and embedded in the corresponding semi-edge structure.

[0039] Structural type 2, such as Figure 3 As shown, the left and right side surfaces of the precast concrete outer leaf wall 1 are flush with the left and right side surfaces of the thermal insulation material layer 2. The left and right side surfaces of the precast concrete outer leaf wall 1 are rough surfaces. The left and right ends of the outer steel mesh are exposed and overhanging on the left and right sides of the precast concrete outer leaf wall. The outer steel mesh is fixedly installed with vertical reinforcing steel bars 7 at the left and right ends close to the precast concrete outer leaf wall. The height of the reinforcing steel bars is slightly smaller than the height of the precast concrete outer leaf wall at the corresponding position, and the reinforcing steel bars are integrally built into the precast concrete outer leaf wall.

[0040] Structural type three, such as Figure 4 As shown, the precast concrete outer leaf wall 1 forms a semi-edging structure 6 on the right side of the thermal insulation material layer 2 near the outer edge, and the right edge of the outer steel mesh is bent 90 degrees inward and built into the semi-edging structure. The left side of the precast concrete outer leaf wall is flush with the left side of the thermal insulation material layer, and the left side of the precast concrete outer leaf wall is a rough surface. The left end of the outer steel mesh is exposed and overhangs the left side of the precast concrete outer leaf wall. A vertical reinforcing steel bar 7 is fixedly installed on the outer steel mesh near the left end of the precast concrete outer leaf wall, and the height of the reinforcing steel bar is slightly smaller than the height of the precast concrete outer leaf wall at the corresponding position, and the reinforcing steel bar is integrally built into the precast concrete outer leaf wall.

[0041] Structural type four, the precast concrete outer leaf wall 1 forms a semi-edging structure 6 on the left side of the thermal insulation material layer 2 near the outer edge, and the left edge of the outer steel mesh is bent 90 degrees inward and built into the semi-edging structure. The right side of the precast concrete outer leaf wall is flush with the right side of the thermal insulation material layer, and the right side of the precast concrete outer leaf wall is a rough surface. The right end of the outer steel mesh is exposed and overhangs the right side of the precast concrete outer leaf wall. A vertical reinforcing steel bar 7 is fixedly installed on the outer steel mesh near the right end of the precast concrete outer leaf wall, and the height of the reinforcing steel bar is slightly smaller than the height of the precast concrete outer leaf wall at the corresponding position, and the reinforcing steel bar is integrally built into the precast concrete outer leaf wall. Structural type four is exactly opposite to structural type three in the left and right edge structural styles of the concrete layer and the outer steel mesh.

[0042] Structural types 2, 3 and 4 are mainly used at the corners of the exterior walls. The left edge and / or right edge of the exterior steel mesh passes through the corresponding side precast concrete outer leaf wall and the part that overhangs to the left and right is mainly used to serve as the steel structure skeleton of the outer cast-in-place concrete layer at the corner of the exterior wall and for connecting and fixing the skeletons.

[0043] The single-sided prefabricated concrete steel wire grid insulation board wall may also include external wall corners, such as Figure 6 As shown, the outer wall corner is surrounded by two left and right single-sided precast concrete wire mesh insulation boards arranged at an angle, and fixedly connected into a whole by the cast-in-place concrete inner leaf wall 14 and the outer cast-in-place concrete layer 11. The specific structure is: the inner edges of the sides of the two insulation material layers close to each other are fitted together, and the inner corner sandwiched by the sides of the two insulation material layers close to each other is filled with insulation board 13. The so-called filling means that the two adjacent sides of the insulation board are respectively fitted with the sides of the two insulation material layers close to each other. The space outside the insulation board and within the boundary of the extended intersection of the outer sides of the concrete layers of the two single-sided precast concrete wire mesh insulation boards is the outer cast-in-place concrete layer 11. The inner leaf wall 14 of the two insulation material layers is the cast-in-place concrete.

[0044] The two single-sided precast concrete steel wire mesh insulation panels at the outer wall corners are one of structural type three and the other of structural type four, or both of them are of structural type two, or one of them is of structural type three or four and the other of structural type two. In short, the outer wire mesh of each single-sided precast concrete steel wire mesh insulation panel is exposed and cantilevered on the side of the concrete layer and is arranged near the corner.

[0045] The outer steel meshes 4 cantilevered to the right and left on the left and right single-sided precast concrete steel wire mesh insulation boards are connected by a connecting angle mesh 12. A reinforcing steel bar 7 is arranged along the folded edge on the inner side of the folded angle of the connecting angle mesh. The reinforcing steel bar is fixed to the connecting angle mesh and is built into the outer cast-in-place concrete layer 11 together with the outer steel meshes cantilevered to the right and left on the left and right single-sided precast concrete steel wire mesh insulation boards. The connecting angle mesh 12, the reinforcing steel bar 7 and the cantilevered parts of the left and right outer steel meshes 4 together serve as the steel skeleton of the cast-in-place concrete layer 11. The mesh specifications of the connecting angle mesh can be the same as those of the outer steel mesh, and the lengths of the left and right sides of the connecting angle mesh are close to the lengths of the exposed cantilevered parts of the outer steel mesh.

[0046] Furthermore, preferably, there is a gap in the horizontal and vertical directions between the precast concrete outer leaf wall of any one of the single-sided precast concrete steel wire grid insulation panels on the wall and other precast panel components (including but not limited to the single-sided precast concrete steel wire grid insulation panels) and the cast-in-place concrete layer located adjacent to the same side wall. The gap can be used as a deformation joint, and the deformation joint can be filled with a foamed polyethylene backing tube or backing rod, and the opening of the deformation joint can be sealed with an elastic sealant.

[0047] The precast concrete outer leaf wall is preferably made of fine stone concrete, and the thickness is preferably 60 mm.

[0048] The nominal particle size of the coarse aggregate of the fine stone concrete is preferably not greater than 10 mm.

[0049] The mesh of the outer steel mesh is denser than that of the inner steel mesh, for example, the mesh size of the outer steel mesh is 50mm×50mm, and the mesh size of the inner steel mesh is 100mm×100mm. The distance from the outer steel mesh to the insulation material layer is preferably greater than the distance from the inner steel mesh to the insulation material layer. The inner and outer steel meshes are preferably made of galvanized steel wire with a diameter of 3-5mm.

[0050] The inserted wires are preferably made of stainless steel wires with a diameter of 4 mm. The two rows of inserted wires near the top and bottom of the single-sided precast concrete steel wire mesh insulation board are straight inserted wires, and the remaining inserted wires are upper and lower inclined inserted wires. In the same longitudinal section, the inclined directions of two adjacent inclined inserted wires are opposite. The truss skeleton formed by the inner and outer steel wire meshes and the inserted wires has better stability.

[0051] The thermal insulation material board is preferably a graphite polystyrene board or an extruded polystyrene board, and the board thickness may be 120-200 mm.

[0052] Preferably, reinforcing steel bars 7 are arranged along the inner side of the corresponding edge of the outer wire mesh that is bent 90 degrees inward. The length of the reinforcing steel bars is slightly shorter than the length of the folded edge. The reinforcing steel bars are fixedly connected to the outer wire mesh and built into the corresponding half-edge structure.

[0053] The simplest form is that the thermal insulation material layer is a complete rectangular plate, and the corresponding precast concrete outer leaf wall is also rectangular and slightly larger than the thermal insulation material layer. On this basis, the edge of the thermal insulation material layer can be reserved with a notch as needed. In this case, the precast concrete outer leaf wall should form a semi-edging structure on the side of the notch near the outer edge, and the outer steel wire mesh is set along the notch to be bent 90 degrees toward the inside and built into the corresponding semi-edging structure, that is, the precast concrete outer leaf wall also forms a notch at the corresponding position. The inner side of the 90-degree bend is preferably provided with reinforcing steel bars along the folded edge, and the reinforcing steel bars are fixedly connected to the outer steel wire mesh and built into the corresponding semi-edging structure. The semi-edging structure and parameters at the notch can be completely referred to the semi-edging structure 6 at the edges of the surrounding sides of the thermal insulation material layer. In addition, holes (through the thermal insulation material layer and the precast concrete outer leaf wall) can also be reserved on the board surface of the single-sided precast concrete wire mesh insulation board as needed.

[0054] All of the above-mentioned reinforcing steel bars preferably have a diameter of 6 mm or at least not less than 6 mm.

[0055] Usually, the height of this single-sided precast concrete wire mesh insulation board corresponds to the floor height, and the width can be several standard widths. The joints between the boards are connected in two different ways according to the wall requirements. For the gaps between the boards without structural joints (temperature joints), they are prefabricated into several standard widths. For the gaps between panels without structural joints (lateral adjacent parts), insulation materials of the same or similar properties can be filled between the insulation material layers (when the single-sided precast concrete wire mesh insulation board is provided with a semi-half-edge structure on the corresponding side, it refers to the insulation material layers exposed outside the semi-edge structure), and concrete mortar can be filled between the precast concrete layers (the concrete layers on the single-sided precast concrete wire mesh insulation board) to achieve consolidation between the precast concrete layers. The transverse wires of the inner steel wire mesh can be welded to each other or anchored in the cast-in-place concrete layer (the inner concrete layer of the wall). It is preferred to have a certain overlapping range in the horizontal direction or to separately set transverse connecting ribs with a certain overlapping area with the two inner steel wire meshes at both ends. The outer steel wire mesh is not connected (there is no overlapping area in the horizontal direction and no transverse connecting ribs are provided, for example, when the adjacent sides of the two panels are provided with a semi-edge structure) or is connected in the same way as the inner steel wire mesh.

[0056] See also Figure 7The structural seam (temperature seam) of the wall can be set between two adjacent single-sided precast concrete steel wire grid insulation boards. The single-sided precast concrete steel wire grid insulation board is preferably provided with a half-edge structure on the side where the structural seam is set. The adjacent insulation material layers at the structural seam (when the single-sided precast concrete steel wire grid insulation board is provided with a half-half-edge structure on the corresponding side, it refers to the insulation material layers exposed outside the half-edge structure) are filled with the same or similar insulation material 15, and the structural seam filling material 16 is filled between the precast concrete layers, such as asphalt hemp or asphalt mortar, etc., and the second filling material 17 with good waterproof performance such as epoxy resin putty can be filled in the outer area of ​​the structural seam, such as epoxy resin putty, and the outer surface is covered with aluminum plate or other seam covering strips, and the filling material in the structural seal is bonded to the adjacent precast concrete layer and the insulation material. When multiple filling materials are provided, the various filling materials are bonded to each other. When seam covering strips are provided, the seam covering strips are bonded to the filling material on the inside.

[0057] To set up the hidden column in the wall, the area corresponding to the hidden column 18 at the inner end of the single-sided precast concrete steel wire grid insulation board can be removed, that is, a notch 19 corresponding to the hidden column is provided at the inner end of the single-sided precast concrete steel wire grid insulation board adjacent to the hidden column (see Fig. 9 ), the gap usually occupies about half of the thickness of the insulation material layer, and part of the insulation material layer and the concrete layer (or precast concrete outer leaf wall) located outside the insulation material layer are still retained outside the gap. During construction, the gap corresponding to the hidden column on the single-sided precast concrete wire mesh insulation board adjacent to the hidden column is set at the corresponding position of the casting area of ​​the hidden column 18 (see Figure 8 ), and set the structural steel bars of the hidden column in the casting area of ​​the hidden column. The structural steel bars of the hidden column are set according to the conventional method. If necessary, they can be tied and connected with the steel bars on the single-sided precast concrete wire mesh insulation board. The corresponding inner formwork is still set on the inner side of the wall. When pouring concrete, the concrete is filled into the pouring space including the casting area of ​​the hidden column at the same time. After consolidation, the wall structure including the hidden column is formed.

[0058] The present invention also discloses a construction method for the above-mentioned single-sided prefabricated concrete steel wire grid insulation board wall, such as Figure 5 As shown, the single-sided precast concrete steel wire mesh insulation board and the structural steel bars of the inner leaf wall (i.e., wall steel bars and / or connecting beam steel bars 9) are first installed in position, the inner steel mesh of the single-sided precast concrete steel wire mesh insulation board is connected and fixed to the structural steel bars by using the connecting steel bars 10, the inner formwork is installed so that the inner formwork and the structural steel bars are kept spaced and relatively fixed, concrete is poured between the insulation material layer of the single-sided precast concrete steel wire mesh insulation board and the inner formwork, and after curing, the inner formwork is removed to obtain the single-sided precast concrete steel wire mesh insulation board wall.

[0059] When the single-sided precast concrete steel wire mesh insulation board is at different positions on the wall, the components formed by the cast-in-place concrete may include more than just the inner leaf wall, but may also include one or more of the connecting beams, floor slabs, and structural columns. Of course, correspondingly, when installing the above-mentioned structural steel bars, the built-in steel bars of the connecting beams, floor slabs, or structural columns are also installed at the same time, and when installing the above-mentioned inner side formwork, the inner side formwork for the connecting beams and structural columns and the upper and lower formwork for the floor slabs are also installed at the same time. The inner leaf wall and other adjacent cast-in-place concrete components are usually an integrally cast structure, so there is no problem of water leakage or seepage.

[0060] The diameter of the tie steel bar is preferably not less than 6 mm. The distance between two adjacent tie steel bars in the longitudinal and transverse directions should not exceed 600 mm. When the width or height of the single-sided precast concrete steel wire mesh insulation board is less than 600 mm, there are no less than 2 tie steel bars in the corresponding direction.

[0061] The gap between the sides of the insulation material layer of two adjacent single-sided prefabricated concrete wire mesh insulation panels on the same side wall that are not blocked by the concrete layer can be filled with rock wool.

[0062] For the exterior corners, Figure 6 As shown, the construction includes two parts, the inner side and the outer side of the wall corner. The inner side is actually the boundary of two different walls, and is the overlapping area when the two walls are constructed. Therefore, the construction method is the above-mentioned construction method for single-sided walls, and the cast-in-place concrete inner leaf wall 14 formed is the above-mentioned cast-in-place concrete inner leaf wall 8. The difference between the construction of the outer side of the wall corner and the construction method of the single-sided wall is that the left and right two pieces of the single-sided precast concrete steel wire mesh insulation panels are arranged at an angle according to the design parameters of the outer wall corner, wherein one of the two single-sided precast concrete steel wire mesh insulation panels is of structural type three and the other is of structural type four, or both are of structural type two, or one is of structural type three or four and the other is of structural type two.

[0063] The right overhanging part of the outer steel wire mesh of the left single-sided precast concrete steel wire frame insulation board and the left overhanging part of the outer steel wire mesh of the right single-sided precast concrete steel wire frame insulation board are respectively extended to the outer corner of the wall, so that the inner edges of the sides of the insulation material layers of the left and right single-sided precast concrete steel wire frame insulation boards that are close to each other are affixed (usually the specifications of the components of the left and right single-sided precast concrete steel wire frame insulation boards are the same), and the inner corner sandwiched by the sides of the two insulation material layers that are close to each other is filled with an insulation board 13, and the insulation board 13 and the insulation material layer can be bonded and fixed. The exposed overhanging parts of the outer steel wire mesh of the left and right single-sided precast concrete steel wire frame insulation boards that extend to the outer corner of the wall are connected by a connecting angle net 12 to form the basic shape of the outer corner of the wall. The horizontal cross-section of the connecting angle net is L-shaped, which just connects the left and right outer steel wire meshes into a whole and forms a closed structure at the junction. A reinforcing steel bar 7 is fixedly installed along the folded edge on the inner side of the folded corner of the connecting angle net. Finally, the outer formwork is installed, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire mesh insulation board and the outer formwork, and after curing, an outer cast-in-place concrete layer 11 is formed. The pouring of the cast-in-place concrete inner leaf wall and the outer cast-in-place concrete layer can also be carried out in the same construction step.

[0064] The up, down, left, and right referred to herein refer to the up, down, left, and right when the single-sided precast concrete steel wire grid insulation board is used on a wall and viewed from the outside to the inside.

Claims

1. Single-sided prefabricated concrete steel wire grid insulation board wall, characterized by The invention comprises a single-sided precast concrete steel wire mesh insulation board and a cast-in-place concrete inner leaf wall which are combined into one body, wherein the single-sided precast concrete steel wire mesh insulation board comprises a steel wire mesh sandwich insulation board and a precast concrete outer leaf wall, wherein the steel wire mesh sandwich insulation board comprises an insulation material layer, an inner steel mesh and an outer steel mesh which are respectively located at the inner and outer sides of the insulation material layer and are spaced apart from the insulation material layer, and a plurality of inserted wires which pass through the insulation material layer and are respectively welded to the inner steel mesh and the outer steel mesh at both ends, wherein the precast concrete outer leaf wall is located at the outer side of the insulation material layer The concrete outer leaf wall forms a semi-edge structure at the top and bottom surfaces of the insulation material layer near the outer edge, the outer steel wire mesh is fixed in the precast concrete outer leaf wall, the upper and lower edges of the outer steel wire mesh are bent 90 degrees inward and embedded in the corresponding semi-edge structure, the cast-in-place concrete inner leaf wall is fixed on the inner side of the insulation material layer, and the cast-in-place concrete inner leaf wall is embedded with wall steel bars and / or connecting beam steel bars, which are all located on the inner side of the inner steel wire mesh and are connected and fixed to the inner steel wire mesh by pulling steel bars.

2. The single-sided precast concrete steel wire grid insulation board wall according to claim 1, characterized in that The single-sided precast concrete steel wire mesh insulation board includes four structural types: structural type one, the precast concrete outer leaf wall forms a semi-edge structure at the left and right sides of the insulation material layer near the outer edge, and the left and right edges of the outer steel wire mesh are bent 90 degrees inward and embedded in the corresponding semi-edge structure; structural type two, the left and right sides of the precast concrete outer leaf wall are respectively flush with the left and right sides of the insulation material layer, the left and right ends of the outer steel wire mesh are respectively exposed and cantilevered on the left and right sides of the precast concrete outer leaf wall, and the outer steel wire mesh is fixedly installed with vertical reinforcing steel bars at the left and right ends near the precast concrete outer leaf wall, and the reinforcing steel bars are embedded in the precast concrete outer leaf wall; structural type three, the precast concrete outer leaf wall forms a semi-edge structure at the right side of the insulation material layer near the outer edge, and the right edge of the outer steel wire mesh is bent 90 degrees inward and embedded in the In the semi-wrapped edge structure, the left side surface of the precast concrete outer leaf wall is flush with the left side surface of the thermal insulation material layer, the left end of the outer steel mesh is exposed and cantilevered from the left side of the precast concrete outer leaf wall, and the outer steel mesh is fixedly installed with vertical reinforcing steel bars near the left end of the precast concrete outer leaf wall, and the reinforcing steel bars are built into the precast concrete outer leaf wall; Structural type four, the precast concrete outer leaf wall forms a semi-wrapped edge structure at the left side surface of the thermal insulation material layer near the outer edge, the left edge of the outer steel mesh is bent 90 degrees inward and built into the semi-wrapped edge structure, the right side surface of the precast concrete outer leaf wall is flush with the right side surface of the thermal insulation material layer, the right end of the outer steel mesh is exposed and cantilevered from the right side of the precast concrete outer leaf wall, and the outer steel mesh is fixedly installed with vertical reinforcing steel bars near the right end of the precast concrete outer leaf wall, and the reinforcing steel bars are built into the precast concrete outer leaf wall.

3. The single-sided precast concrete steel wire grid insulation board wall according to claim 2, characterized in that It also includes an outer wall corner, which is surrounded by two left and right single-sided precast concrete wire mesh insulation panels arranged at an angle, and is fixedly connected into a whole through a cast-in-place concrete inner leaf wall and an outer cast-in-place concrete layer. The specific structure is: the inner edges of the sides of the two insulation material layers that are close to each other are fitted together, and the inner corners sandwiched by the sides of the two insulation material layers that are close to each other are filled with insulation boards. The space outside the insulation board and within the boundary of the extended intersection of the outer sides of the precast concrete layers of the two single-sided precast concrete wire mesh insulation panels is the outer cast-in-place concrete layer, and the inside of the two insulation material layers is the cast-in-place concrete inner leaf wall. The two insulation material layers are One of the single-sided precast concrete steel wire mesh insulation panels is of structural type three, and the other is of structural type four, or both are of structural type two, or one is of structural type three or four, and the other is of structural type two. The outer steel meshes cantilevered to the right and left respectively on the left and right single-sided precast concrete steel wire mesh insulation panels are connected by connecting angle meshes, and reinforcing steel bars are arranged along the folded edges on the inner sides of the folded angles of the connecting angle meshes. The reinforcing steel bars are fixed to the connecting angle meshes and are embedded in the outer cast-in-place concrete layer together with the outer steel meshes cantilevered to the right and left respectively on the left and right single-sided precast concrete steel wire mesh insulation panels.

4. The single-sided precast concrete steel wire grid insulation board wall according to claim 1, 2 or 3, characterized in that A corresponding edge of the outer steel wire mesh is bent 90 degrees inwardly and provided with reinforcing steel bars along the inner side of the folded edge. The reinforcing steel bars are fixedly connected to the outer steel wire mesh and built into the corresponding half-edge structure.

5. The single-sided precast concrete steel wire grid insulation board wall according to claim 1, 2 or 3, characterized in that The two rows of inserted wires near the top and the bottom of a single-sided prefabricated concrete steel wire grid insulation board are straight inserted wires, and the remaining inserted wires are upper and lower inclined inserted wires.

6. The single-sided precast concrete steel wire grid insulation board wall according to claim 1, 2 or 3, characterized in that The meshes of the outer steel wire mesh are denser than those of the inner steel wire mesh.

7. The single-sided precast concrete steel wire grid insulation board wall according to claim 4, characterized in that A notch is provided at the edge of the thermal insulation material layer, and the precast concrete outer leaf wall forms a semi-edge structure on the side of the notch near the outer edge, and the outer steel wire mesh is arranged along the notch with the edge bent 90 degrees inward and embedded in the corresponding semi-edge structure, and reinforcing steel bars are arranged along the folded edge on the inner side of the 90-degree bend, and the reinforcing steel bars are fixedly connected to the outer steel wire mesh and embedded in the corresponding semi-edge structure.

8. The construction method of the single-sided precast concrete steel wire grid insulation board wall according to any one of claims 1 to 7, characterized in that The single-sided precast concrete steel wire mesh insulation board is installed in position, the structural steel bars of the inner leaf wall are arranged, the inner steel mesh of the single-sided precast concrete steel wire mesh insulation board is connected and fixed to the structural steel bars of the inner leaf wall by using the connecting steel bars, the inner formwork is installed so that the inner formwork and the structural steel bars maintain a set interval and are relatively fixed, the single-sided precast concrete steel wire mesh insulation board is used as a permanent outer formwork, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire mesh insulation board and the inner formwork.

9. The construction method of the single-sided precast concrete steel wire grid insulation board wall according to claim 8, characterized in that A notch corresponding to the hidden column is provided at the inner end of the single-sided precast concrete wire mesh insulation board adjacent to the hidden column. In the position where the hidden column is provided, the notch corresponding to the hidden column is set on the single-sided precast concrete wire mesh insulation board adjacent to the hidden column at the corresponding position of the casting area of ​​the hidden column, and the structural steel bars of the hidden column are set in the casting area of ​​the hidden column. When pouring concrete, the concrete is simultaneously filled into the casting space including the casting area of ​​the hidden column, and is consolidated in the casting area of ​​the hidden column to form a hidden column integrated with the inner leaf wall.

10. The construction method of the single-sided precast concrete steel wire grid insulation board wall according to any one of claims 8 to 9, characterized in that During the construction of a single-sided wall, the single-sided precast concrete steel wire grid insulation board is installed in position, and two left and right single-sided precast concrete steel wire grid insulation boards are arranged at an angle to form a surround at the outer wall corner. One of the two single-sided precast concrete steel wire grid insulation boards is of structural type three and the other is of structural type four, or both are of structural type two, or one is of structural type three or four and the other is of structural type two, so that the right overhanging part of the outer steel wire mesh of the left single-sided precast concrete steel wire grid insulation board and the left overhanging part of the outer steel wire mesh of the right single-sided precast concrete steel wire grid insulation board respectively extend to the outer wall corner, so that the inner edges of the sides of the insulation material layers of the left and right single-sided precast concrete steel wire grid insulation boards that are close to each other are fitted together, and the inner corner sandwiched by the sides of the two insulation material layers that are close to each other is additionally filled with insulation. The single-sided precast concrete steel wire frame insulation board is a panel, and the overhanging parts of the outer steel wire meshes extending to the outer wall corners of the left and right single-sided precast concrete steel wire frame insulation boards are connected by connecting angle meshes to form the basic shape of the outer wall corners, and reinforcing steel bars are fixedly installed along the folded edges on the inner side of the folded angles of the connecting angle meshes; the structural steel bars of the inner leaf wall are arranged, and the inner steel wire meshes of the single-sided precast concrete steel wire frame insulation board are connected and fixed to the structural steel bars of the inner leaf wall by connecting steel bars, and the inner template is installed so that the inner template and the structural steel bars are kept at a set interval and relatively fixed, and the single-sided precast concrete steel wire frame insulation board is used as a permanent outer template, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire frame insulation board and the inner template; the outer template is installed, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire frame insulation board and the outer template.

11. The construction method of a single-sided precast concrete steel wire grid insulation board wall according to any one of claims 1 to 7, characterized in that During the construction of a single-sided wall, the single-sided precast concrete steel wire grid insulation board is installed in position, and two left and right single-sided precast concrete steel wire grid insulation boards are arranged at an angle to form a surround at the outer wall corner. One of the two single-sided precast concrete steel wire grid insulation boards is of structural type three and the other is of structural type four, or both are of structural type two, or one is of structural type three or four and the other is of structural type two, so that the right overhanging part of the outer steel wire mesh of the left single-sided precast concrete steel wire grid insulation board and the left overhanging part of the outer steel wire mesh of the right single-sided precast concrete steel wire grid insulation board respectively extend to the outer wall corner, so that the inner edges of the sides of the insulation material layers of the left and right single-sided precast concrete steel wire grid insulation boards that are close to each other are fitted together, and the inner corner sandwiched by the sides of the two insulation material layers that are close to each other is additionally filled with insulation. The single-sided precast concrete steel wire frame insulation board is a panel, and the overhanging parts of the outer steel wire meshes extending to the outer wall corners of the left and right single-sided precast concrete steel wire frame insulation boards are connected by connecting angle meshes to form the basic shape of the outer wall corners, and reinforcing steel bars are fixedly installed along the folded edges on the inner side of the folded angles of the connecting angle meshes; the structural steel bars of the inner leaf wall are arranged, and the inner steel wire meshes of the single-sided precast concrete steel wire frame insulation board are connected and fixed to the structural steel bars of the inner leaf wall by connecting steel bars, and the inner template is installed so that the inner template and the structural steel bars are kept at a set interval and relatively fixed, and the single-sided precast concrete steel wire frame insulation board is used as a permanent outer template, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire frame insulation board and the inner template; the outer template is installed, and concrete is poured between the insulation material layer of the single-sided precast concrete steel wire frame insulation board and the outer template.

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