Masonry type cast-in-place wall structure free of formwork removal

Abstract

The utility model discloses a masonry type cast-in-place wall structure free of formwork removal, relates to the field of buildings, and aims to improve the stability between an outer structure layer on the outer side of cast-in-place concrete in the wall structure and the cast-in-place concrete. According to the technical scheme, the masonry type formwork-removal-free cast-in-place wall structure comprises a formwork formed by hollow building blocks in a masonry mode and an outer structure layer tightly attached to the outer side face of the formwork, each hollow building block comprises two parallel plate faces, and at least one connecting rib is arranged between the two plate faces; core-grouted concrete formed by cast-in-place is filled in an inner cavity of the formwork, the formwork and the core-grouted concrete form a structural layer of the wall, a connecting piece is embedded in the core-grouted concrete, one end of the connecting piece penetrates out of the outer side face of the formwork from a joint between the hollow building blocks, and an outer structural layer is fixedly installed on the outer side face of the formwork through the connecting piece. The wall body is constructed in a prefabrication and cast-in-place mode, and the wall body is used for construction of a wall body capable of bearing loads.

Description

Technical Field

[0001] The utility model relates to the field of buildings, in particular to a wall structure constructed by combining masonry and cast-in-place methods. Background Art

[0002] From the inside to the outside, the building exterior wall can generally be divided into: the interior decoration layer, the structural layer, the fireproof and thermal insulation layer, and the exterior decoration layer. In order to avoid the separation of the fireproof and thermal insulation layer and the exterior decoration layer, the exterior decoration layer and the fireproof and thermal insulation layer are pre-anchored to form an integrated thermal insulation and decoration board. The integrated thermal insulation and decoration board, as a whole, has the functions of decoration, fireproofing, and thermal insulation, which can not only simplify the structure of the building exterior wall, but also simplify the construction process of the two-layer structure.

[0003] The structural layer of the building's exterior wall can be made of prefabricated hollow walls. The prefabricated hollow walls have a reserved cast-in-place cavity. During on-site construction, concrete is poured into the cast-in-place cavity, and the concrete and the prefabricated hollow walls form an integral structure. Prefabricated hollow walls are a form of prefabricated building walls, also called composite walls, which are divided into single-sided composite walls and double-sided composite walls. Existing prefabricated hollow walls generally include two parallel and vertically placed wall panels. The two wall panels are connected by connecting ribs to form a cast-in-place cavity. The wall panels are prefabricated in the factory and assembled on site. Since different buildings have different requirements for the size of wall panels, wall panels often need to be customized, resulting in high production and management costs. In addition, the wall panels are flat plates, which are suitable for forming flat-shaped walls. It is not convenient or impossible to directly form T-shaped, cross-shaped, arc-shaped and other special-shaped walls.

[0004] The fireproof and thermal insulation layer and the outer decorative layer of the building's exterior wall are installed after the construction of the structural layer is completed. Generally, the fireproof and thermal insulation layer is fixed with rivets on the outside of the structural layer, and then the outer decorative layer is constructed on the outside of the fireproof and thermal insulation layer, or the warm decorative integrated panel is fixed with rivets directly on the outside of the structural layer. Rivets can cause puncture damage to the fireproof and thermal insulation layer and the outer decorative layer, as well as to the warm decorative integrated panel. The puncture site is easily damaged and prone to water seepage, affecting the durability and stability of the structure on the outside of the structural layer, and may even easily fall off. In addition, the construction process of rivets is cumbersome, and the fixing quality is difficult to control; rivets are generally made of metal, such as stainless steel or iron parts after anti-corrosion treatment. Rivets have high thermal conductivity and are prone to forming more wall cold bridges. Utility Model Content

[0005] The utility model provides a masonry type cast-in-place wall structure without removing the formwork, aiming at improving the stability between the outer structural layer outside the cast-in-place concrete in the wall structure and the cast-in-place concrete.

[0006] The technical scheme adopted by the utility model is: a masonry-type cast-in-situ wall structure without formwork removal, comprising a formwork shell formed by masonry of hollow building blocks and an outer structural layer closely attached to the outer side surface of the formwork shell, the hollow building blocks comprising two mutually parallel plate surfaces, the two plate surfaces as two bottom surfaces corresponding to the polyhedron are regular prisms, at least one connecting rib is arranged between the two plate surfaces, the two ends of the connecting rib are respectively fixedly connected to the two plate surfaces or each connecting rib is an integral part of the two plate surfaces; the inner cavity of the formwork shell is filled with cast-in-situ core concrete, the formwork shell and the core concrete form the structural layer of the wall, a connecting piece is embedded in the core concrete, one end of the connecting piece passes through the outer side surface of the formwork shell from the joint between the hollow building blocks, and the outer structural layer is fixedly installed on the outer side surface of the formwork shell through the connecting piece.

[0007] The two panels of the hollow block are spliced ​​together to form the inner and outer sides of the mold shell. Specifically: the shape of the panel of the hollow block is a polygon. For example, the shape of the panel of the hollow block is a rectangle, a regular hexagon or a trapezoid. For another example, the two panels of the hollow block are both rectangular, the long side of the rectangle corresponds to the horizontal direction of the mold shell, the short side of the rectangle corresponds to the vertical direction of the mold shell, and two connecting ribs are connected between the two panels.

[0008] In order to accurately position and interlock the hollow blocks, increase the masonry speed of the formwork and ensure the stability of the formwork, the joints between the hollow blocks are arranged in at least two directions, and a positioning structure is provided at the joints arranged in at least one direction. For example, mutually matching grooves and bosses are provided on both sides of the joints, or mutually matching steps are provided on both sides of the joints.

[0009] In order to improve the strength of the core-cast concrete, further: steel bars are inserted into the inner cavity of the mold shell, and the core-cast concrete is reinforced concrete.

[0010] In order to position the steel bars in the core concrete, further: the connecting bars in the inner cavity of the mold shell are arranged in a matrix, the connecting bars are provided with positioning holes or positioning grooves, and the steel bars are passed through the positioning holes or positioning grooves.

[0011] The connector plays a role in fixing the outer structural layer, and the connector can be either flexible or hard. For example, the connector is made of a hard material, and the connector is in an inverted T shape on a vertical section perpendicular to its length direction, and the connector has two inner corners, and the outer structural layer is a rectangular plate-like structure, and the four corners of the outer structural layer are respectively located in the inner corners of the connector.

[0012] In order to reduce the cold bridge of the wall, the connecting piece is preferably made of a material with low thermal conductivity, for example, the connecting piece is made of fiber reinforced plastic.

[0013] The outer structure layer plays at least one of the following functions: leveling, heat preservation, fire prevention, decoration, etc. Specifically, the outer structure layer includes a fireproof layer and a finishing layer outside the fireproof layer, and the inner side of the fireproof layer is attached to the formwork; or, the outer structure layer is an integrated heat preservation and decoration board attached to the formwork.

[0014] The hollow block acts as a template and is combined with the core concrete to bear the force as a whole. Specific: The material of the hollow block is concrete or brick.

[0015] The beneficial effects of the utility model are as follows: the formwork is formed by the masonry of hollow blocks, so that walls of different sizes and shapes can be flexibly formed, not only plane walls can be formed, but also T-shaped, cross-shaped, arc-shaped and other special-shaped walls can be formed. The formwork is a cast-in-place template for core-cast concrete, which realizes cast-in-place without removing the formwork, and during the solidification of the concrete, the formwork itself also has a certain bearing capacity, and other construction can be carried out, thereby saving construction time. The core-cast concrete and the formwork form an integral structure, which can be used as a load-bearing wall. The connector is embedded in the core-cast concrete and passes through the outer side of the formwork from the joints between the hollow blocks. The connector is firmly connected to the core-cast concrete, and there is no need to open holes in the hollow blocks, which avoids damage and reduces construction steps. The outer structural layer is fixedly installed by the connector. Since the connector is embedded in the core-cast concrete, the connector itself has good stability, so the stability and durability of the outer structural layer can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of an embodiment of a masonry type formwork-free cast-in-place wall structure.

[0017] Figure 2 yes Figure 1 Schematic diagram of the disassembly of the embodiment shown.

[0018] Figure 3 yes Figure 1 A schematic structural diagram of a single hollow building block in the illustrated embodiment.

[0019] Figure 4 yes Figure 1 A schematic diagram of the structure of the mold shell and the connecting parts in the embodiment shown.

[0020] Figure numerals: hollow building block 1, plate surface 11, connecting rib 12, step 13, outer structural layer 2, fireproof layer 21, finishing layer 22, connecting piece 3. DETAILED DESCRIPTION

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] See also Figures 1 to 4The utility model of the masonry type cast-in-place wall structure without formwork removal comprises a formwork shell formed by masonry of hollow blocks 1 and an outer structural layer 2 closely attached to the outer side of the formwork shell. The two plate surfaces 11 of the hollow block 1 are spliced ​​together to form the inner and outer side surfaces of the formwork shell, and the inner and outer side surfaces of the formwork shell are both continuous planes or curved surfaces. The hollow block 1 comprises two parallel plate surfaces 11, and the positional relationship of the two plate surfaces 11 is: the polyhedron corresponding to the two bottom surfaces of the two plate surfaces 11 is a regular prism. At least one connecting rib 12 is arranged between the two plate surfaces 11 of the hollow block 1, and the function of the connecting rib 12 is to connect and fix the two plate surfaces 11, and the two ends of the connecting rib 12 are respectively fixedly connected to the two plate surfaces 11 or each connecting rib 12 is an integral part of the two plate surfaces 11. The shape of the plate surface 11 of the hollow block 1 can be whatever as long as it can be spliced ​​to form a continuous and complete inner and outer side surface of the formwork shell. In order to facilitate the production of the hollow building block 1, the shape of the plate surface 11 of the hollow building block 1 is polygonal, such as a rectangle, a regular hexagon or a trapezoid, so that the hollow building blocks 1 can be laid layer by layer from bottom to top. In order to improve the strength of the formwork, the hollow building blocks 1 are laid in a staggered manner to form the formwork. For example, Figure 3 As shown, the two panels 11 of the hollow building block 1 are both rectangular, the long side of the rectangle corresponds to the horizontal direction of the formwork, and the short side of the rectangle corresponds to the vertical direction of the formwork. Two connecting ribs 12 are connected between the two panels 11, and the two panels 11 and the two connecting ribs 12 are a whole. The hollow building block 1 can be formed into a formwork with the help of mortar masonry. In order to reduce the construction difficulty, increase the construction speed, and improve the stability of the formwork, the joints between the hollow building blocks 1 are arranged in at least two directions, and a positioning structure is set at the joints arranged in at least one direction. The positioning structure is used to accurately position the panels 11 of the hollow building blocks 1 and engage with each other. For example, see Figure 3 , mutually matching steps 13 are respectively arranged on both sides of the joint. In addition, the positioning structure can also be: mutually matching grooves and bosses are respectively arranged on both sides of the joint.

[0023] The space between the two panels 11 of the hollow building block 1 except for the connecting ribs 12 is the inner cavity of the hollow building block 1, and the inner cavity of each hollow building block 1 directly forms the inner cavity of the formwork. The inner cavity of the formwork is used for cast-in-place concrete. The cast-in-place concrete solidifies into core concrete and combines with the formwork as a whole. The formwork and the core concrete form the structural layer of the wall. The hollow building block 1 acts as a template and is also combined with the core concrete as a whole to bear the force. The material of the hollow building block 1 is concrete or brick. The core concrete can be plain concrete or reinforced concrete. When the core concrete is reinforced concrete, steel bars are inserted into the inner cavity of the formwork, and then cast-in-place construction can be carried out. In order to facilitate the arrangement of the steel bars of the core concrete, the connecting ribs 12 inside the formwork are preferably arranged in a matrix, see Figure 1 , Figure 2 and Figure 4The connecting bars 12 are arranged in rows and columns, the connecting bars 12 in the same row are located in the same horizontal plane, and the connecting bars 12 in the same column are located in the same vertical plane. In order to facilitate the positioning of the steel bars in the core concrete, the connecting bars 12 in the inner cavity of the mold shell are arranged in a matrix, and the connecting bars 12 are provided with positioning holes or positioning grooves, and the steel bars are inserted into the positioning holes or positioning grooves.

[0024] A connector 3 is embedded in the core concrete. The connector 3 is pre-fixed in the inner cavity of the formwork before pouring the core concrete. One end of the connector 3 passes through the outer side of the formwork from the joint between the hollow blocks 1. The outer structure layer 2 is fixed to the outer side of the formwork through the connector 3. The connector 3 plays a role in fixing the outer structure layer 2. The connector 3 can be either flexible or hard. For example, see Figure 2 and Figure 4 , the connector 3 is made of a hard material, and the connector 3 is in an inverted T-shape on a vertical section perpendicular to its length direction, and the connector 3 has two inner corners, and the outer structural layer 2 is a rectangular plate-like structure, and the four corners of the outer structural layer 2 are respectively located in the inner corners of the connector 3. An end plate can also be fixedly set at the end of the connector 3, and the plane corresponding to the end plate is perpendicular to the length direction of the connector 3, and the end plate plays a role in limiting the outer structural layer 2. Another embodiment of the connector 3 is provided below. When the connector 3 is made of a hard material, the connector 3 is in a cross shape on a vertical section perpendicular to its length direction, and the connector 3 has four inner corners, and the outer structural layer 2 is a rectangular plate-like structure, and the four corners of the outer structural layer 2 are respectively located in the inner corners of the connector 3. The connector 3 is in an inverted T-shape or a cross shape on a vertical section perpendicular to its length direction, and has the characteristics of large bending stiffness and high bearing capacity, and can be effectively used as an embedded part for the subsequent hanging of the outer structural layer 2. The connector 3 is inserted into the gap between the hollow blocks 1, and no additional holes are required, which will not damage the structural layer of the wall. In order to reduce the cold bridge of the wall, the connector 3 is preferably made of a material with low thermal conductivity. For example, the material of the connector 3 is fiber reinforced plastic, that is, the material of the connector 3 is FRP. In order to avoid the disturbance of the connector 3 by the cast-in-place core concrete, ensure that the length direction of the connector 3 is perpendicular to the inner and outer sides of the mold shell, and the end of the connector 3 corresponding to the inner side of the mold shell is also preferably located in the joint between the hollow blocks 1 and flush with the inner side of the mold shell.

[0025] The outer structure layer 2 is a general term for the structure located on the outer side of the mold shell, which can be a single-layer structure or a multi-layer structure. The outer structure layer 2 plays at least one of the following functions: leveling, heat preservation, fire prevention, decoration, etc. For example, see Figure 1 and Figure 2, the outer structure layer 2 includes a fireproof layer 21 and a finishing layer 22 outside the fireproof layer 21, and the inner side of the fireproof layer 21 is attached to the formwork; or, the outer structure layer 2 is a thermal insulation decorative integrated board attached to the formwork, and the thermal insulation decorative integrated board integrates the functions of thermal insulation, fire prevention and decoration. When the outer structure layer 2 includes a fireproof layer 21 and a finishing layer 22 outside the fireproof layer 21, the finishing layer 22 is a rectangular plate and is fixed to the connecting member 3, a cavity is formed between the finishing layer 22 and the outer side of the formwork, and the fireproof layer 21 can be constructed by over-injection in the cavity.

[0026] The utility model constructs the wall by prefabrication and cast-in-place, and adopts the formwork formed by masonry of hollow blocks 1 as a non-disassembly formwork, which improves production efficiency. At the same time, the formwork itself can also be stressed, so it can be constructed during the solidification period of the core concrete. The outer structure layer 2 is anchored by the connector 3, avoiding the installation of the keel and reducing the construction process. The outer structure layer 2 is an integrated insulation and decoration panel. Compared with the concrete outer blade of the sandwich insulation, the integrated insulation and decoration panel is lighter. Compared with the reverse external insulation, the integrated insulation and decoration panel has better insulation performance and smaller wall thickness. At the same time, because the integrated insulation and decoration panel is produced in the factory, its quality is better than the external decorative layer obtained by on-site construction.

Claims

1. Masonry-type cast-in-place wall structure without formwork removal, characterized by: The invention comprises a formwork formed by masonry of hollow building blocks (1) and an outer structural layer (2) closely attached to the outer side surface of the formwork, wherein the hollow building blocks (1) comprise two mutually parallel plate surfaces (11), the two plate surfaces (11) being a polyhedron corresponding to two bottom surfaces forming a regular prism, at least one connecting rib (12) being arranged between the two plate surfaces (11), the two ends of the connecting rib (12) being respectively fixedly connected to the two plate surfaces (11) or each connecting rib (12) and the two plate surfaces (11) forming a whole; the inner cavity of the formwork is filled with cast-in-place core concrete, the formwork and the core concrete forming a structural layer of the wall, a connecting piece (3) being embedded in the core concrete, one end of the connecting piece (3) passing through the outer side surface of the formwork from the joint between the hollow building blocks (1), and the outer structural layer (2) being fixedly mounted on the outer side surface of the formwork via the connecting piece (3).

2. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 1, characterized in that: The shape of the plate surface (11) of the hollow building block (1) is polygonal.

3. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 2, characterized in that: The two plate surfaces (11) of the hollow building block (1) are both rectangular, the long side of the rectangle corresponds to the horizontal direction of the mold shell, and the short side of the rectangle corresponds to the vertical direction of the mold shell. Two connecting ribs (12) are connected between the two plate surfaces (11).

4. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 1, characterized in that: The joints between the hollow building blocks (1) are arranged in at least two directions, and a locking structure is provided at the joints arranged in at least one direction.

5. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 4, characterized in that: Mutually adapted grooves and bosses are respectively arranged on both sides of the joint, or mutually adapted steps (13) are respectively arranged on both sides of the joint.

6. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 1, characterized in that: Steel bars are inserted into the inner cavity of the mold shell, and the core concrete is reinforced concrete.

7. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 6, characterized in that: The connecting ribs (12) in the inner cavity of the mold shell are arranged in a matrix, and the connecting ribs (12) are provided with positioning holes or positioning grooves, and the steel bars are passed through the positioning holes or positioning grooves.

8. The masonry type cast-in-place wall structure without formwork removal according to any one of claims 1 to 7, characterized in that: The connecting piece (3) is made of a hard material. The connecting piece (3) is in an inverted T-shape in a vertical section perpendicular to its length direction. The connecting piece (3) has two inner corners. The outer structural layer (2) is a rectangular plate-like structure. The four corners of the outer structural layer (2) are respectively located in the inner corners of the connecting piece (3).

9. The masonry type cast-in-place wall structure without formwork removal as claimed in claim 8, characterized in that: The material of the connecting piece (3) is fiber reinforced plastic.

10. The masonry type cast-in-place wall structure without formwork removal according to any one of claims 1 to 7, characterized in that: The hollow building block (1) is made of concrete or brick; the outer structural layer (2) comprises a fireproof layer (21) and a finishing layer (22) outside the fireproof layer (21); the inner side of the fireproof layer (21) is bonded to the formwork; or the outer structural layer (2) is a thermal insulation decorative integrated board bonded to the formwork.

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