Light steel double-sided waterproof backplate grouting wall and construction method

Abstract

The application discloses a kind of light steel double-side waterproof backboard grouting wall and construction method, including light steel keel, waterproof backplate, grouting concrete, outside plastering layer, the light steel keel is connected with each other, forms the framework of grouting wall, the waterproof backplate is located at the two sides or end of grouting wall's framework, with framework together form a closed grouting cavity, the grouting concrete is filled in the closed grouting cavity between framework and waterproof backplate, the outside plastering layer is located at the outer surface of waterproof backplate.The present application has good heat preservation, heat insulation, sound insulation effect, while having the advantages of strong fire resistance, and the wall self-weight is light, the requirement of low construction technology, support on-site construction and factory prefabrication process, facilitate construction, greatly reduce the construction difficulty, shorten construction time.

Description

Technical Field

[0001] This invention relates to the field of industrialized building wall technology, specifically to a lightweight steel double-sided waterproof back panel grouting wall and its construction method that simultaneously supports on-site construction or prefabricated factory assembly-on-site assembly. Background Technology

[0002] Traditional masonry walls and cast-in-place concrete walls have problems such as long construction period, complicated procedures, poor waterproofing, weak sound insulation, heavy weight, and easy cracking.

[0003] Traditional light steel walls are inadequate in terms of waterproofing, strength, and durability.

[0004] Most existing grouting walls only support on-site formwork construction and have not achieved industrialized prefabrication; some prefabricated walls are also unable to meet the flexible on-site construction requirements.

[0005] Currently, the market lacks an integrated wall system that can be both installed on-site and prefabricated in the factory, while also considering versatility and industrialization. Summary of the Invention

[0006] To address the above problems, this invention provides a lightweight steel double-sided waterproof backing grouting wall and its construction method.

[0007] The technical solution of this invention is: a light steel double-sided waterproof backing grouting wall, comprising a light steel keel, a waterproof backing, grouting concrete, and an outer plaster layer. The light steel keel is interconnected to form the skeleton of the grouting wall. The waterproof backing is disposed on both sides or at the ends of the skeleton of the grouting wall, forming a closed grouting cavity together with the skeleton. The waterproof backing and the light steel keel are connected by fasteners with sealing gaskets. The grouting concrete fills the closed grouting cavity between the skeleton and the waterproof backing. The outer plaster layer is disposed on the outer surface of the waterproof backing.

[0008] Preferably, the waterproof backing includes an insulation layer, with polymer mortar layers on both sides of the insulation layer, and fiberglass mesh laid inside the polymer mortar layer, with the fiberglass mesh located on the side of the polymer mortar layer closest to the insulation layer; wherein, the insulation layer includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board.

[0009] Preferably, the fastener with sealing washer includes a self-tapping screw or a tie rod assembly with sealing washer. The tie rod assembly includes a welded screw, a widened sealing washer and a nut. The welded screw penetrates the wall and tightens and fixes the waterproof backing plates on both sides.

[0010] Preferably, the closed grouting cavity of the grouting wall is provided with threaded steel bars or structural column steel reinforcement components or steel structural members.

[0011] Preferably, a junction box or pipeline is also provided in the closed grouting cavity of the grouting wall, and the junction box is embedded in and fixed in the waterproof backing plate.

[0012] Preferably, the light steel keel includes top and bottom keels, vertical keels, window opening keels or door opening keels. The top and bottom keels are set at the upper or lower end of the grouting wall, the vertical keels are set vertically in the middle or end of the grouting wall, the window opening keels are set around the window opening, and the door opening keels are set around the door opening.

[0013] As a further preferred embodiment, the window or door frame and the waterproof backing form a reinforced support cavity, which is filled with C30 concrete, and the remaining areas of the grouted wall are filled with lightweight concrete.

[0014] As a further preferred option, the junction area where the two grouting walls intersect is filled with C30 concrete and reinforced with threaded steel bars, while the remaining area of ​​the grouting wall is filled with lightweight concrete.

[0015] A construction method for a lightweight steel double-sided waterproof back panel grouting wall includes two approaches: on-site construction and factory prefabrication, comprising the following steps: On-site construction process: S1. On-site keel installation: Combine and fix various types of light steel keels, threaded steel bars, structural column steel reinforcement components, or steel structural parts according to construction requirements to form the skeleton of the grouting wall; S2. On-site fabrication and installation of waterproof backing panels: The insulation layer, polymer mortar, and fiberglass mesh are composited and molded on-site to form a waterproof backing panel. The waterproof backing panel is installed on both sides or ends of the grouting wall frame to ensure a firm connection between the waterproof backing panel and the light steel keel, forming a closed grouting cavity. The insulation layer includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board. S3. Pipeline pre-embedding: Pre-embedding pipelines and junction boxes in the sealed grouting wall according to construction requirements, and completing positioning and fixing; this step is omitted if there is no pre-embedding requirement. S4. Grouting: Grouting concrete is poured into the sealed grouting cavity. During the pouring process, the concrete is vibrated simultaneously to remove air and ensure compaction. After pouring, the concrete is kept moist and cured. S5. Surface painting: Level and paint the outer surface of the waterproof backing to form an outer paint layer. Apply anti-crack mesh tape to the joints of the waterproof backing before painting.

[0016] Factory prefabrication process: S1'. Factory-prefabricated waterproof back panel: The insulation layer, polymer mortar, and fiberglass mesh are composite and pressed into a standardized waterproof back panel in the factory; the insulation layer includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S2'. On-site keel installation: Combine and fix various types of light steel keels, threaded steel bars, structural column steel reinforcement components, or steel structural parts according to construction requirements to form the skeleton of the grouting wall; On-site assembly of waterproof back panels involves assembling and fixing factory-prefabricated waterproof back panels to the sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Pipeline pre-embedding: Pre-embedding pipelines and junction boxes within the enclosed grouting wall according to design requirements, and completing positioning and fixing; this step is omitted if there is no pre-embedding requirement. S4'. Grouting: Grouting concrete is poured into the sealed grouting cavity. Vibration is performed simultaneously during the pouring process to expel air and ensure compaction. Moisture curing is performed after pouring. S5'. Surface painting: Level and paint the outer surface of the waterproof backing to form an outer paint layer. Apply anti-crack mesh tape to the joints of the waterproof backing before painting.

[0017] Preferably, in step S4 or S4', when zonal grouting is required, an immersion vibrator is used to focus on vibrating along the reinforced area and the junction of the zones, supplemented by a plate vibrator for leveling; the concrete surface is vibrated until grout appears and no obvious air bubbles overflow; curing is carried out by covering with a plastic film to keep it moist.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the present invention has good heat insulation, sound insulation and heat insulation effects, and also has the advantages of strong fire resistance. Moreover, the wall is lightweight and has low requirements for construction technology. It supports on-site construction and factory prefabrication processes, which facilitates construction, greatly reduces construction difficulty and shortens construction time.

[0019] Dual-system compatibility: It supports both on-site construction and factory prefabrication and assembly, making it suitable for all project scenarios.

[0020] Excellent waterproof and moisture-proof properties: Double-sided sealed structure, seamless overall, preventing moisture and mold growth.

[0021] Excellent thermal insulation: The core material of the extruded polystyrene board has a low thermal conductivity, so no additional insulation layer is required.

[0022] Excellent sound insulation: The entire structure is densely poured, with no mortar joints to prevent sound leakage.

[0023] Excellent fire resistance: entirely non-combustible and with a long fire resistance time.

[0024] Lightweight and high-strength: Its weight is much lower than that of brick walls, reducing the building load.

[0025] Earthquake and crack resistance: monolithic structure, eliminating the risk of cracking at joints.

[0026] Highly efficient construction: On-site construction is faster than traditional masonry; prefabricated construction reduces the construction period by more than 3 times.

[0027] Stable quality: High precision in factory prefabrication and simple on-site construction process.

[0028] Green and environmentally friendly: dust-free, low-waste, low-carbon and energy-saving. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall wall structure of Embodiment 1 of the present invention.

[0030] Figure 2 This is a schematic diagram of the wall structure in Embodiment 1 of the present invention.

[0031] Figure 3 This is a schematic diagram of the layered structure of the waterproof backing plate of the present invention.

[0032] Figure 4 This is a schematic diagram of the cross-sectional structure of the wall in Embodiment 1 of the present invention.

[0033] Figure 5 This is a schematic diagram of the connection frame between the wall and the cement column in Embodiment 2 of the present invention.

[0034] Figure 6 This is a schematic diagram of the overall wall structure of Embodiment 3 of the present invention.

[0035] Figure 7 This is a partial structural diagram of the junction box installation according to Embodiment 3 of the present invention.

[0036] Figure 8 This is a schematic diagram of the skeleton structure of the window opening in Embodiment 4 of the present invention.

[0037] Figure 9 This is a schematic diagram of the skeleton structure of the doorway in Embodiment 4 of the present invention.

[0038] Figure 10 This is a cross-sectional schematic diagram of the reinforced support cavity area for door and window openings in Embodiment 4 of the present invention.

[0039] Figure 11 This is a schematic diagram of adding a threaded steel frame to the door and window openings in Embodiment 5 of the present invention.

[0040] Figure 12 This is a cross-sectional schematic diagram of the reinforced support cavity area for door and window openings in Embodiment 5 of the present invention.

[0041] Figure 13 This is a schematic diagram of the L-shaped wall junction area structure in Embodiment 6 of the present invention.

[0042] Figure 14 This is a schematic diagram of the T-shaped wall junction area structure in Embodiment 7 of the present invention.

[0043] Figure 15 This is a schematic diagram of the cross-shaped wall junction area structure in Embodiment 8 of the present invention.

[0044] Figure 16 This is a schematic diagram of the structural column region of Embodiment 9 of the present invention.

[0045] Figure 17 This is a schematic diagram of the I-beam connection structure wall using a planar connection method in Embodiment 10 of the present invention.

[0046] Figure 18 This is a schematic diagram of the structure of the I-beam connection wall using the concave connection method in Embodiment 11 of the present invention.

[0047] Label Explanation 1-Light steel keel; 2-Grouted concrete; 3-Waterproof backing board; 31-Insulation layer; 32-Polymer mortar layer; 33-Fiber mesh; 4-Outer plaster layer; 5-Structural column; 6-Threaded steel tie rod; 7-Top and bottom keels; 8-Vertical keel; 9-Welded bolt; 10-Nut; 11-Sealing washer; 12-Pipeline; 13-Junction box; 14-Structural column reinforcement assembly; 15-Door opening; 16-Door opening keel; 17-Window opening; 18-Window opening keel; 19-Lightweight concrete; 20-Reinforced support cavity; 21-Boundary area; 22-Threaded steel; 23-Self-tapping screw; 24-Spacer block; 25-Wooden formwork; 26-Connecting plate; 27-Structural column area; 28-I-beam; 29-Keel fixing bracket plate. Detailed Implementation

[0048] Example 1

[0049] The basic wall (the on-site construction process and the factory prefabrication process are both applicable), the waterproof back panel 3 can be made on-site or prefabricated in the factory, and assembled with the keel to form a closed grouting cavity, and then grouted and formed.

[0050] like Figure 1-4 As shown, a lightweight steel double-sided waterproof backing grouting wall includes a lightweight steel keel 1, a waterproof backing 3, grouting concrete 2, and an outer plaster layer 4. The lightweight steel keels 1 are interconnected to form the skeleton of the grouting wall. The waterproof backing 3 is located on both sides or at the ends of the skeleton, forming a closed grouting cavity together with the skeleton. The waterproof backing 3 and the lightweight steel keel 1 are connected by fasteners with sealing gaskets 11. The grouting concrete 2 fills the closed grouting cavity between the skeleton and the waterproof backing 3. The outer plaster layer 4 is located on the outer surface of the waterproof backing 3. The waterproof backing 3 is a composite panel fabricated on-site or a prefabricated composite panel in a factory.

[0051] In this embodiment, the waterproof backing plate 3 includes an insulation layer 31. Polymer mortar layers 32 are provided on both sides of the insulation layer 31, and fiberglass mesh 33 is laid within the polymer mortar layer 32, located on the side of the polymer mortar layer 32 closest to the insulation layer 31. The insulation layer 31 has excellent thermal insulation performance, eliminating the need for an additional insulation layer outside the wall. The fiberglass mesh 33 and polymer mortar layer 32 replace the traditional wire mesh and plastering steps in the production process, reducing the technical requirements for workers, minimizing processing steps, and lowering production costs. The insulation layer can include high-density extruded polystyrene (XPS) board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board. These different materials can be selected as the insulation layer according to the actual working conditions. High-density extruded polystyrene (XPS) board is a rigid closed-cell foam board made from polystyrene resin through extrusion molding, belonging to organic insulation materials. TEPS homogeneous board is made of EPS polystyrene foam particles wrapped in inorganic fireproof slurry under negative pressure, with an organic core encased in an inorganic fireproof shell, rated A2 non-combustible. Foamed ceramic insulation board is made from tailings / clay / fly ash, sintered at 1200℃ to form closed-cell ceramic, purely inorganic, rated A1 non-combustible. Foamed glass insulation board is made from waste glass pulverizer and foaming agent, molten and foamed at high temperature, with a fully closed-cell glass structure, rated A1 non-combustible, entirely inorganic. ASG inorganic composite insulation board consists of a central graphite aerogel particle insulation core, double-sided inorganic mortar protective layers, and a prefabricated composite board with fiberglass mesh, rated A2 fireproof.

[0052] In this embodiment, the fastener with sealing washer 11 includes a self-tapping screw 23 with sealing washer 11. Figure 2 ) or tie rod assembly ( Figure 4 When using self-tapping screws 23 with sealing washers 11 for connection ( Figure 2 Simply screw the self-tapping screw 23 into the outer side of the waterproof backing plate 3 and connect it to the light steel keel 1. When using a tie rod assembly ( Figure 4 The tie rod assembly includes a welded screw 9, a widened sealing washer 11, and a nut 10. The welded screw 9 penetrates the wall and tightens and fixes the waterproof backing plates 3 on both sides.

[0053] In this embodiment, the light steel keel 1 includes top and bottom keels 7 and vertical keels 8; the top and bottom keels 7 are located at the upper or lower end of the grouting wall, and the vertical keels 8 are vertically located in the middle or end of the grouting wall, with the upper and lower ends respectively connected to the top and bottom keels 7.

[0054] A construction method for a lightweight steel double-sided waterproof back panel grouting wall includes two approaches: on-site construction and factory prefabrication, comprising the following steps: On-site construction process: S1. Installation of light steel keel 1: Combine and fix the top and bottom keels 7 and vertical keels 8 according to the construction requirements to form the skeleton of the grouting wall; S2. On-site fabrication and installation of waterproof backing panels: On-site, the insulation layer 31, polymer mortar, and fiberglass mesh are compositely molded to form the waterproof backing panel 3. The waterproof backing panel 3 is installed on both sides or ends of the grouting wall frame to ensure that the waterproof backing panel 3 is firmly connected to the light steel keel 1 to form a closed grouting cavity. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S3. Grouting: Pour 2 grouting concrete into the sealed grouting cavity. Vibrate simultaneously during the pouring process to remove air and ensure compaction. After pouring, keep the concrete moist and cure. S4. Surface painting: Level and paint the outer surface of the waterproof backing board 3 to form the outer paint layer 4; if the wall area is too large and more than two waterproof backing boards 3 are needed, apply anti-crack mesh tape to the joint of the waterproof backing board 3 before painting.

[0055] Factory prefabrication process: S1'. Factory prefabricated waterproof back panel: The insulation layer 31, polymer mortar, and fiberglass mesh 33 are compositely pressed and molded in the factory to form a standardized waterproof back panel 3; wherein, the insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S2'. On-site keel installation: Combine and fix various types of light steel keels 1 according to construction requirements to form the skeleton of the grouting wall; The waterproof backing plate 3 is assembled on site. The prefabricated waterproof backing plate 3 is assembled and fixed to the two sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Grouting: Pour grouting concrete 2 into the sealed grouting cavity. Vibrate simultaneously during the pouring process to remove air and ensure compaction. After pouring, keep the cavity moist and cure. S4'. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0056] The type of grouting concrete 2 can be selected according to actual needs, such as lightweight concrete 19, C30 concrete, etc.

[0057] Compared to the traditional brick wall construction method, the present invention has simpler processing steps, significantly reduces construction difficulty and reliance on manual labor, reduces the self-weight of the wall, and makes construction simpler.

[0058] Example 2

[0059] Walls connected to structural columns (both on-site construction and factory prefabrication processes are applicable) This embodiment adds a threaded steel tie rod 6 to the structure column 5, based on embodiment 1, to improve the overall integrity.

[0060] like Figure 5 As shown, a light steel double-sided waterproof backing grouting wall includes a light steel keel 1, a waterproof backing 3, grouting concrete 2, and an outer plaster layer 4. The light steel keels 1 are interconnected to form the skeleton of the grouting wall. The waterproof backing 3 is located on both sides or at the ends of the skeleton of the grouting wall, forming a closed grouting cavity together with the skeleton. The grouting concrete 2 fills the closed grouting cavity between the skeleton and the waterproof backing 3. The outer plaster layer 4 is located on the outer surface of the waterproof backing 3.

[0061] In this embodiment, the light steel keel 1 includes top and bottom keels 7 and vertical keels 8; the top and bottom keels 7 are located at the upper or lower end of the grouting wall, and the vertical keels 8 are vertically located in the middle or end of the grouting wall, with the upper and lower ends respectively connected to the top and bottom keels 7.

[0062] In this embodiment, threaded steel tie bars 6 are installed inside the closed grouting cavity of the grouting wall.

[0063] In this embodiment, the grouting wall is located next to the structural column 5. One end of the threaded steel tie rod 6 is located inside the structural column 5, and the other end extends into the framework of the grouting wall, exceeding at least the second vertical joist 8. The threaded steel tie rod 6 and the second vertical joist 8 are tied together with steel wire ties. The vertical joists 8 of the grouting wall near the structural column 5 need to be fixed to the structural column 5. The fixing methods include, but are not limited to, using gunpowder nails, pneumatic nails, expansion bolts, etc.

[0064] In this embodiment, the waterproof backing 3 includes an insulation layer 31, and polymer mortar layers 32 are provided on both sides of the insulation layer 31. Fiberglass mesh 33 is laid inside the polymer mortar layer 32, and the fiberglass mesh 33 is located on the side of the polymer mortar layer 32 closest to the insulation layer 31. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board.

[0065] In this embodiment, the waterproof backing plate 3 and the light steel keel 1 are connected by fasteners with sealing washers 11.

[0066] A construction method for a lightweight steel double-sided waterproof backing grouting wall includes the following steps: S1. Installation of light steel keel 1: Combine the top and bottom keels 7 and vertical keels 8 according to the construction requirements to form the skeleton of the grouting wall, and tie them with the threaded steel tie rod 6. The vertical keel 8 at one end of the grouting wall is fixedly connected to the structural column 5. S2. On-site fabrication and installation of waterproof backing panels: On-site, the insulation layer 31, polymer mortar, and fiberglass mesh are compositely molded to form the waterproof backing panel 3. The waterproof backing panel 3 is installed on both sides or ends of the grouting wall frame to ensure that the waterproof backing panel 3 is firmly connected to the light steel keel 1 to form a closed grouting cavity. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S3. Grouting: According to the construction requirements, pour grouting concrete 2 into the sealed grouting cavity. Vibrate simultaneously during the pouring process to remove air and ensure compaction. After pouring, keep the cavity moist and curing. S4. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0067] Factory prefabrication process: S1'. Factory prefabricated waterproof back panel: The insulation layer 31, polymer mortar, and fiberglass mesh 33 are compositely pressed and molded in the factory to form a standardized waterproof back panel 3; wherein, the insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S2'. On-site keel installation: Combine the top and bottom keels 7 and vertical keels 8 according to the construction requirements to form the skeleton of the grouting wall, and tie them with the threaded steel tie rods 6. The vertical keel 8 at one end of the grouting wall is fixedly connected to the structural column 5. On-site assembly of waterproof back panels involves assembling and fixing the factory-prefabricated waterproof back panels 3 to the sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Grouting: Pour grouting concrete 2 into the sealed grouting cavity. Vibrate simultaneously during the pouring process to remove air and ensure compaction. After pouring, keep the cavity moist and cure. S4'. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0068] Example 3

[0069] Embedded pipeline wall (on-site construction process and factory prefabrication process are both applicable) This embodiment adds a pre-embedded pipeline 12 and a junction box 13 to the embodiment 1.

[0070] The waterproof backplate 3 can be pre-drilled at the factory or on-site to assemble the pipeline 12 and junction box 13.

[0071] like Figure 6-7As shown, a light steel double-sided waterproof backing grouting wall includes a light steel keel 1, a waterproof backing 3, grouting concrete 2, and an outer plaster layer 4. The light steel keels 1 are interconnected to form the skeleton of the grouting wall. The waterproof backing 3 is located on both sides or at the ends of the skeleton of the grouting wall, forming a closed grouting cavity together with the skeleton. The grouting concrete 2 fills the closed grouting cavity between the skeleton and the waterproof backing 3. The outer plaster layer 4 is located on the outer surface of the waterproof backing 3.

[0072] In this embodiment, the waterproof backing 3 includes an insulation layer 31, and polymer mortar layers 32 are provided on both sides of the insulation layer 31. Fiberglass mesh 33 is laid inside the polymer mortar layer 32, and the fiberglass mesh 33 is located on the side of the polymer mortar layer 32 closest to the insulation layer 31. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board.

[0073] In this embodiment, the waterproof backing plate 3 and the light steel keel 1 are connected by fasteners with sealing washers 11.

[0074] In this embodiment, a junction box 13 or a pipeline 12 is also provided in the closed grouting cavity of the grouting wall. The junction box 13 is embedded in the inner side of the waterproof backing plate 3 and fixed.

[0075] Pipeline 12 is inserted between the light steel keel 1 and connected to the framework of the grouting wall. Pipeline 12 is pre-embedded and vertically laid along the inner side of the vertical keel 8. Pipeline 12 is connected to junction box 13. An opening to accommodate junction box 13 is reserved on the waterproof back plate 3, and the position of the opening corresponds to the pre-embedded junction box 13. The junction box 13 is embedded in the inner side of the waterproof back plate 3 and is abutted against the surface of junction box 13 by wooden template 25. The two ends of the wooden template 25 are connected to the waterproof back plate 3 by fasteners, and a pad 24 is set at the connection to adjust the height of junction box 13. In this embodiment, the light steel keel 1 includes top and bottom keels 7 and vertical keels 8; the top and bottom keels 7 are located at the upper or lower end of the grouting wall, and the vertical keels 8 are vertically located in the middle or end of the grouting wall, with the upper and lower ends respectively connected to the top and bottom keels 7.

[0076] A construction method for a lightweight steel double-sided waterproof backing grouting wall includes the following steps: On-site construction process: S1. On-site keel installation: Combine and fix various types of light steel keels 1 according to construction requirements to form the skeleton of the grouting wall; S2. On-site fabrication and installation of waterproof backing panels: On-site, the insulation layer 31, polymer mortar, and fiberglass mesh are compositely molded to form the waterproof backing panel 3. The waterproof backing panel 3 is installed on both sides or ends of the grouting wall frame to ensure that the waterproof backing panel 3 is firmly connected to the light steel keel 1 to form a closed grouting cavity. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S3. Pipeline 12 is pre-embedded. According to the design requirements, pipeline 12 and junction box 13 are pre-embedded in the closed grouting wall and positioned and fixed. The junction box 13 is embedded inside the waterproof backing plate 3 and a wooden template 25 is used to abut against the surface of the junction box 13. The two ends of the wooden template 25 are connected to the waterproof backing plate 3 by fasteners, and a pad 24 is set at the connection to adjust the height of the junction box 13. S4. Grouting: Pour 2 grouting concrete into the sealed grouting cavity. Vibrate the concrete simultaneously during the pouring process to remove air and ensure compaction. After pouring, keep the concrete moist and cure it. S5. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0077] Factory prefabrication process: S1'. Factory-prefabricated waterproof back panel: The insulation layer 31, polymer mortar, and fiberglass mesh 33 are compositely pressed and molded in the factory to form a standardized waterproof back panel 3, and holes corresponding to the positions of the pre-embedded junction box 13 are opened; wherein, the insulation layer 31 includes high-density extruded board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board; S2'. On-site keel installation: Combine and fix various types of light steel keels 1 according to construction requirements to form the skeleton of the grouting wall; On-site assembly of waterproof back panels involves assembling and fixing the factory-prefabricated waterproof back panels 3 to the sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Pipeline 12 is pre-embedded. According to the design requirements, pipeline 12 and junction box 13 are pre-embedded in the closed grouting wall and positioned and fixed. The junction box 13 is embedded inside the waterproof backing plate 3 and a wooden template 25 is used to abut against the surface of the junction box 13. The two ends of the wooden template 25 are connected to the waterproof backing plate 3 by fasteners, and a pad 24 is set at the connection to adjust the height of the junction box 13. S4'. Grouting: Pour grouting concrete 2 into the sealed grouting cavity. Vibrate simultaneously during the pouring process to remove air and ensure compaction. After pouring, keep the cavity moist and cure. S5'. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0078] Example 4

[0079] This embodiment adds a door opening joist 16 or a window opening joist 18 to the structure where the wall needs to have a window or door. The reinforced area of ​​the wall at the door and window openings (using both on-site construction and factory prefabrication methods) is filled with C30 concrete to ensure strength.

[0080] like Figure 8-10 As shown, a light steel double-sided waterproof backing grouting wall includes a light steel keel 1, a waterproof backing 3, grouting concrete 2, and an outer plaster layer 4. The light steel keels 1 are interconnected to form the skeleton of the grouting wall. The waterproof backing 3 is located on both sides or at the ends of the skeleton of the grouting wall, forming a closed grouting cavity together with the skeleton. The grouting concrete 2 fills the closed grouting cavity between the skeleton and the waterproof backing 3. The outer plaster layer 4 is located on the outer surface of the waterproof backing 3.

[0081] In this embodiment, the waterproof back panel 3 includes an insulation layer 31, and polymer mortar layers 32 are provided on both sides of the insulation layer 31. Fiberglass mesh 33 is laid inside the polymer mortar layer 32, and the fiberglass mesh 33 is located on the side of the polymer mortar layer 32 closest to the insulation layer 31. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board.

[0082] In this embodiment, the waterproof backing plate 3 and the light steel keel 1 are connected by fasteners with sealing washers 11.

[0083] In this embodiment, the light steel keel 1 includes top and bottom keels 7, vertical keels 8, window opening keels 18, or door opening keels 16. The top and bottom keels 7 are located at the upper or lower end of the grouting wall, the vertical keels 8 are vertically installed in the middle or end of the grouting wall, the window opening keels 18 are arranged around the window opening, and the door opening keels 16 are arranged around the door opening. The spacing of the light steel keels 1 above the window opening 17 or door opening 15 is ≤30mm; the ends of the window opening keels 18 and door opening keels 16 are reliably connected to the top and bottom keels 7 or the vertical keels 8.

[0084] In this embodiment, each window frame 18 or door frame 16 must form a reinforced support cavity 20 with the waterproof backing plate 3. The reinforced support cavity 20 formed by the window frame 18 or door frame 16 and the waterproof backing plate 3 is filled with C30 concrete, while the remaining areas of the grouted wall are filled with lightweight concrete 19. The use of different grouted concrete 2 in the two areas ensures the support strength around the door openings 15 and window openings 17, while maintaining the lightweight nature of the rest of the wall.

[0085] A construction method for a lightweight steel double-sided waterproof back panel grouting wall includes two approaches: on-site construction and factory prefabrication, comprising the following steps: On-site construction process: S1. Installation of light steel keel 1: Combine or bundle various types of light steel keel 1 according to construction requirements to form the skeleton of the grouting wall; S2. On-site fabrication and installation of waterproof backing panels: On-site, the insulation layer 31, polymer mortar, and fiberglass mesh are compositely molded to form the waterproof backing panel 3. The waterproof backing panel 3 is installed on both sides or ends of the grouting wall frame to ensure that the waterproof backing panel 3 is firmly connected to the light steel keel 1 to form a closed grouting cavity. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S3. Pouring Grouting Concrete 2: According to construction requirements, grouting concrete 2 is poured into the sealed grouting cavity. Vibration is performed simultaneously during pouring to expel air from the grouting concrete 2 and ensure compaction. The grouting concrete 2 filling the reinforced support cavity 20 formed by the window frame 18 or door frame 16 and the waterproof backing plate 3 is C30 concrete. The grouting concrete 2 filling the remaining sealed grouting cavities is lightweight concrete 19, requiring zoned filling. The waterproof backing plate 3 serves as a temporary partition between the filled C30 concrete and the adjacent lightweight concrete 19. An immersion vibrator is used to focus on vibrating the perimeter and junctions of the reinforced support cavity 20 to ensure compaction and avoid honeycomb, pitting, and cold joint defects. The vibration time should be until the surface of the grouting concrete 2 shows slurry and no obvious air bubbles escape. A plate vibrator is used to perform secondary leveling of the grouting concrete 2 area. After vibration, a plastic film is promptly covered for moisture retention and curing.

[0086] S4. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0087] Factory prefabrication process: S1'. Factory prefabricated waterproof back panel: The insulation layer 31, polymer mortar, and fiberglass mesh 33 are compositely pressed and molded in the factory to form a standardized waterproof back panel 3; wherein, the insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S2'. On-site keel installation: Combine and fix various types of light steel keels 1 according to construction requirements to form the skeleton of the grouting wall; On-site assembly of waterproof back panels involves assembling and fixing the factory-prefabricated waterproof back panels 3 to the sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Grouting: Pour grouting concrete 2 into the sealed grouting cavity. Vibrate simultaneously during pouring to expel air and ensure compaction. After pouring, keep the concrete moist and curing. When zonal grouting is required, use an immersion vibrator to focus on vibrating along the reinforced area and the junction of the zones, and use a plate vibrator to level it. Vibrate until the concrete surface is covered with grout and no obvious air bubbles escape. Curing is done by covering with plastic film to keep it moist.

[0088] S4'. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0089] Example 5

[0090] Reinforced wall with large openings (on-site construction and factory prefabrication processes are both applicable) Based on Example 4, this embodiment adds a threaded steel bar 22 above the opening, which improves the shear and bending resistance when the door opening 15 or window opening 17 is larger.

[0091] like Figure 11-12 As shown, based on embodiment 4, a threaded steel bar 22 is horizontally inserted above the door opening 15 or window opening 17. The diameter can be selected as 8mm, or it can be adjusted according to the actual construction needs. The threaded steel bar 22 is fixed by binding it with the light steel keel 1.

[0092] In this embodiment, two door opening joists 16 or window opening joists 18 are installed opposite each other next to the door opening 15 or window opening 17, forming a reinforced support cavity 20 with the waterproof backing plate 3. The grouting concrete 2 filled in the reinforced support cavity 20 is C30 concrete, and the grouting concrete 2 filled in the remaining closed grouting cavities is lightweight concrete 19. A construction method for a lightweight steel double-sided waterproof back panel grouting wall includes two approaches: on-site construction and factory prefabrication, comprising the following steps: On-site construction process: S1. Installation of light steel keel 1: Combine or bundle various types of light steel keel 1 or threaded steel 22 into the framework of the grouting wall according to the construction requirements. S2. On-site fabrication and installation of waterproof backing panels: On-site, the insulation layer 31, polymer mortar, and fiberglass mesh are compositely molded to form the waterproof backing panel 3. The waterproof backing panel 3 is installed on both sides or ends of the grouting wall frame to ensure that the waterproof backing panel 3 is firmly connected to the light steel keel 1 to form a closed grouting cavity. The insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S3. Pouring Grouting Concrete 2: According to construction requirements, grouting concrete 2 is poured into the sealed grouting cavity, and vibrated simultaneously to expel air from the grouting concrete 2 and ensure compaction. The grouting concrete 2 filling the reinforced support cavity 20 formed by the window frame 18 or door frame 16 and the waterproof backing plate 3 is C30 concrete, while the grouting concrete 2 filling the remaining sealed grouting cavities is lightweight concrete 19, which needs to be filled in sections. The waterproof backing plate 3 serves as a temporary partition between the filled C30 concrete and the adjacent lightweight concrete 19, and an immersion vibrator is used to focus on vibrating along the perimeter and junction of the reinforced support cavity 20 to ensure compaction and avoid defects such as honeycomb, pitting, and cold joints. The vibration time should be until the surface of the grouting concrete 2 shows slurry and no obvious air bubbles escape, and a plate vibrator is used to perform secondary leveling of the grouting concrete 2 area. After vibration, the area is covered with plastic film for moisture retention and curing.

[0093] S4. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0094] Factory prefabrication process: S1'. Factory prefabricated waterproof back panel: The insulation layer 31, polymer mortar, and fiberglass mesh 33 are compositely pressed and molded in the factory to form a standardized waterproof back panel 3; wherein, the insulation layer 31 includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S2'. On-site keel installation: Combine and fix various types of light steel keels 1 or threaded steel 22 according to construction requirements to form the skeleton of the grouting wall; On-site assembly of waterproof back panels involves assembling and fixing the factory-prefabricated waterproof back panels 3 to the sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Grouting: Pour grouting concrete 2 into the sealed grouting cavity. Vibrate simultaneously during pouring to expel air and ensure compaction. After pouring, keep the concrete moist and curing. When zonal grouting is required, use an immersion vibrator to focus on vibrating along the reinforced area and the junction of the zones, and use a plate vibrator to level it. Vibrate until the concrete surface is covered with grout and no obvious air bubbles escape. Curing is done by covering with plastic film to keep it moist.

[0095] S4'. Surface painting: Level and paint the outer surface of the waterproof backing plate 3 to form the outer paint layer 4. After the anti-crack mesh tape is pasted at the joint of the waterproof backing plate 3, it is then painted.

[0096] Example 6

[0097] L-shaped corner wall (common to both on-site construction and factory prefabrication processes). This embodiment, based on Embodiment 1, adopts the "L" structure construction method, with corner assembly reinforcement, L-shaped steel bars, and overall grouting to construct an L-shaped wall, suitable for parapet walls or walls with a height > 3.5m.

[0098] In this embodiment, as Figure 13 As shown, based on Example 1, an L-shaped threaded steel bar 22 is installed inside the closed grouting cavity of the grouting wall.

[0099] In this embodiment, an L-shaped wall is formed by combining two grouting walls. The framework of the two grouting walls is constructed using top and bottom joists 7 and vertical joists 8, respectively. Two opposing vertical joists 8 are joined to form a boundary area 21. The two opposing vertical joists 8 are connected by a waterproof partition 3 and self-tapping screws 23. An L-shaped threaded steel bar 22 is inserted; the threaded steel bar 22 can be 8mm in size or adjusted according to actual processing needs. Both ends of the L-shaped threaded steel bar 22 are located within one wall and extend beyond the second vertical joist 8. The L-shaped threaded steel bar 22 is fixedly connected to the vertical joists 8 by steel wire ties. The grouting wall adopts a monolithic grouting method. Depending on the actual working conditions, if it is necessary to increase the wall's support strength, a partitioned grouting method can be adopted. In the case of partitioned grouting, a waterproof backing plate 3 is added in the junction area 21 to separate the two different types of concrete.

[0100] The construction method is the same as in Example 5. In the installation of the light steel keel 1, the L-shaped threaded steel 22 needs to be tied and connected to the skeleton of the grouting wall according to the design requirements to form an L-shaped wall.

[0101] Example 7

[0102] T-shaped wall (combines on-site construction and factory prefabrication processes) Based on Example 1, the "T" structure construction method is adopted, with reinforcement added to the T-shaped intersection and C30 concrete poured. This creates a T-shaped wall, suitable for parapet walls or walls with a height > 3.5m.

[0103] In this embodiment, as Figure 14 As shown, based on Example 1, a threaded steel bar 22 is provided inside the closed grouting cavity of the grouting wall.

[0104] In this embodiment, a T-shaped wall is formed by combining two grouting walls. The framework of the two grouting walls is constructed using top and bottom joists 7 and vertical joists 8, respectively. Two opposing vertical joists 8 are joined to form a boundary area 21. The two opposing vertical joists 8 are connected by a waterproof backing plate 3 and self-tapping screws 23. Two threaded steel bars 22 are inserted into the two grouting walls to form a T-shape. One end of one threaded steel bar 22 is tied to the middle of the other threaded steel bar 22. The threaded steel bars 22 can be 8mm in size, or adjusted according to actual processing needs. The threaded steel bars 22 are located within the two walls and extend beyond the second vertical joist 8. The threaded steel bars 22 and the vertical joists 8 are fixedly connected by steel wire ties. The grouting concrete 2 filling the boundary area 21 is C30 concrete, while the grouting concrete 2 filling the remaining enclosed grouting cavities is lightweight concrete 19.

[0105] The construction method is the same as in Example 5. In the installation of the light steel keel 1, the threaded steel 22 needs to be tied and connected to the skeleton of the grouting wall according to the design requirements to form a T-shaped wall.

[0106] Example 8

[0107] Example 8: Cross-shaped wall (common to both on-site construction and factory prefabrication processes) This embodiment, based on Embodiment 1, adopts the "+" structural construction method, with cross-shaped reinforcement at the intersection of the crosses and integral casting to construct a cross-shaped wall, which is suitable for parapet walls or walls with a height > 3.5m.

[0108] In this embodiment, as Figure 15 As shown, based on Example 1, a threaded steel bar 22 is provided inside the closed grouting cavity of the grouting wall.

[0109] In this embodiment, two grouting walls are combined to form a cross-shaped wall. The framework of the two intersecting grouting walls is constructed using top and bottom joists 7 and vertical joists 8, respectively. The boundary area 21 is formed by splicing two opposing vertical joists 8. The two opposing vertical joists 8 are connected on both sides by waterproof backing plates 3 and self-tapping screws 23. Two intersecting threaded steel bars 22 are inserted to form a cross shape. The middle of the two threaded steel bars 22 are crossed and tied together. The threaded steel bars 22 can be 8mm in size, or can be adjusted according to actual processing needs. The threaded steel bars 22 are located in one wall and extend beyond the second vertical joist 8. The intersection of the two threaded steel bars 22 is located in the boundary area 21. The threaded steel bars 22 and the vertical joists 8 are fixedly connected by steel wire ties. The grouting wall adopts a monolithic grouting method. Depending on the actual working conditions, if it is necessary to increase the supporting strength of the wall, a zoned grouting method can be adopted. The grouting concrete 2 filled in the junction area 21 is C30 concrete, and the grouting concrete 2 filled in the remaining closed grouting cavities is lightweight concrete 19. In the case of zoned grouting, a waterproof backing plate 3 is added in the junction area 21 to separate the two different types of concrete.

[0110] The construction method is the same as in Example 5. In the installation of the light steel keel 1, the threaded steel 22 needs to be tied and connected to the skeleton of the grouting wall according to the design requirements to form a cross-shaped wall.

[0111] Example 9

[0112] Structural columns reinforce the wall (both on-site construction and factory prefabrication processes are applicable). This embodiment adds structural column reinforcement to the original embodiment 1. A structural column area is set in the middle, and steel bars are assembled and C30 concrete is poured. It is suitable for high-rise and high-load walls.

[0113] In this embodiment, as Figure 16 As shown, based on Embodiment 1, the closed grouting cavity of the grouting wall is provided with threaded steel bars 22 or structural column steel reinforcement components 14.

[0114] In this embodiment, at least six vertical light steel keels 1 are provided within the framework of the grouting wall. The two middle vertical light steel keels 1 are arranged opposite each other to form a structural column area 27. A structural column reinforcement assembly 14 is vertically installed within this area. The threaded steel bar 22 is located within the closed grouting cavity, horizontally inserted into the structural column reinforcement assembly 14, and extends outward beyond the second vertical keel 8. The threaded steel bar 22 and the vertical keel 8 are fixedly connected by steel wire ties. The two vertical keels 8 within the structural column area 27 are equipped with waterproof backing plates 3. The grouting concrete 2 within the structural column area 27 is C30 concrete, while the grouting concrete 2 filling the remaining closed grouting cavities is lightweight concrete 19.

[0115] The construction method is the same as in Example 5. In the installation of the light steel keel 1, the threaded steel 22 and the structural column steel reinforcement assembly 14 need to be tied and connected to the skeleton of the grouting wall according to the design requirements to form the structural column area 27.

[0116] Example 10

[0117] The wall is connected to the structural steel using a planar connection method (the on-site construction process and the factory prefabrication process are both applicable). This embodiment adds a threaded steel tie rod 6 and a structural steel bar 28 to the embodiment 2, and involves the connection with the structural steel bar 28 to improve the overall integrity. This embodiment uses an I-beam as an example for illustration. In actual construction, other forms of structural steel may be used depending on the actual working conditions.

[0118] like Figure 17 As shown, based on Example 2, the closed grouting wall of the grouting wall described above is provided with threaded steel tie bars 6 or I-beams (a type of structural steel 28).

[0119] In this embodiment, the light steel keel 1 includes top and bottom keels 7 and vertical keels 8; the top and bottom keels 7 are located at the upper or lower end of the grouting wall, and the vertical keels 8 are vertically located in the middle or end of the grouting wall, with the upper and lower ends respectively connected to the top and bottom keels 7.

[0120] In this embodiment, the grouting wall is located next to the I-beam and connected to the plane of the I-beam. One end of the threaded steel tie rod 6 is connected to the I-beam, and the other end extends into the framework of the grouting wall, exceeding at least the second vertical joist 8. The threaded steel tie rod 6 and the second vertical joist 8 are tied together with steel wire ties. The first vertical joist is fixedly connected to the I-beam, including but not limited to the use of gunpowder nails, pneumatic nails, expansion bolts, etc. The front and rear sides of the grouting wall and the ends of the wall are fixedly covered with waterproof backing plates, and an outer plaster layer is applied to the surface.

[0121] The construction method is the same as in Example 2. In the installation of the light steel keel 1, the threaded steel tie rods and structural steel 28 need to be tied and connected to the skeleton of the grouting wall according to the design requirements to form a connecting wall.

[0122] Example 11

[0123] The wall is connected to the structural steel using a concave connection method (the on-site construction process and the factory prefabrication process are both applicable). This embodiment adds a threaded steel tie rod 6 and a structural steel bar 28 to the embodiment 2, and involves the connection with the structural steel bar 28 to improve the overall integrity. This embodiment uses an I-beam as an example for illustration. In actual construction, other forms of structural steel may be used depending on the actual working conditions.

[0124] like Figure 17As shown, based on Example 2, the grouting wall is provided with threaded steel tie rods 6 or I-beams (a type of structural steel 28) inside the closed grouting wall.

[0125] In this embodiment, the light steel keel 1 includes top and bottom keels 7 and vertical keels 8; the top and bottom keels 7 are located at the upper or lower end of the grouting wall, and the vertical keels 8 are vertically located in the middle or end of the grouting wall, with the upper and lower ends respectively connected to the top and bottom keels 7.

[0126] In this embodiment, the grouting wall is located next to the I-beam and connected to its concave surface. At regular intervals along the vertical direction on the concave surface of the I-beam, keel fixing brackets 29 are installed. One end of a threaded steel tie rod 6 is connected to the keel fixing bracket 29, and the other end extends into the framework of the grouting wall, exceeding at least the second vertical keel 8. The threaded steel tie rod 6 is tied to the second vertical keel 8 with steel wire ties. The first vertical keel is fixedly connected to the keel fixing bracket 29, including but not limited to using gunpowder nails, pneumatic nails, expansion bolts, etc. The front and rear sides of the grouting wall, as well as the ends of the wall, are fixedly covered with a waterproof backing plate, and an outer plaster layer is applied to the surface.

[0127] The construction method is the same as in Example 2. In the installation of the light steel keel 1, the threaded steel tie rod, structural steel 28, and keel fixing bracket 29 need to be connected to the skeleton of the grouting wall to form a connecting wall according to the design requirements.

[0128] In the description of this invention, it should be understood that the terms "both sides", "end", "above", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0129] In this invention, unless otherwise explicitly specified and limited, the term "connection" and other such terms should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0130] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lightweight steel double-sided waterproof backing grouting wall, characterized in that... The structure includes a light steel keel (1), a waterproof backing plate (3), grouting concrete (2), and an outer plaster layer (4). The light steel keels (1) are connected to each other to form the skeleton of the grouting wall. The waterproof backing plate (3) is located on both sides or at the ends of the skeleton of the grouting wall, forming a closed grouting cavity together with the skeleton. The waterproof backing plate (3) and the light steel keel (1) are connected by fasteners with sealing gaskets (11). The grouting concrete (2) fills the closed grouting cavity between the skeleton and the waterproof backing plate (3). The outer plaster layer (4) is located on the outer surface of the waterproof backing plate (3).

2. A lightweight steel double-sided waterproof back panel grouting wall according to claim 1, characterized in that... The waterproof back panel (3) includes an insulation layer (31), and polymer mortar layers (32) are provided on both sides of the insulation layer (31). Fiberglass mesh (33) is laid inside the polymer mortar layer (32), and the fiberglass mesh (33) is located inside the polymer mortar layer (32) on the side close to the insulation layer (31). The insulation layer (31) includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foamed glass insulation board, and ASG inorganic composite insulation board.

3. A lightweight steel double-sided waterproof backing grouting wall according to claim 1, characterized in that... The fasteners with sealing washers (11) include self-tapping screws (23) with sealing washers (11) or tie rod assemblies. The tie rod assemblies include welded screws (9), widened sealing washers (11) and nuts (10). The welded screws (9) penetrate the wall and tighten and fix the waterproof backing plates (3) on both sides.

4. A lightweight steel double-sided waterproof backing grouting wall according to claim 1, characterized in that... The enclosed grouting cavity is provided with threaded steel bars (22) or structural column steel reinforcement components (14) or steel structural components.

5. A lightweight steel double-sided waterproof backing grouting wall according to claim 1, characterized in that... A junction box (13) or pipeline (12) is pre-embedded in the closed grouting cavity. The junction box (13) is embedded in the waterproof back plate (3) and fixed.

6. A lightweight steel double-sided waterproof backing grouting wall according to claim 1, characterized in that... The light steel keel (1) includes top and bottom keels (7), vertical keels (8), window keels (18) or door keels (16). The top and bottom keels (7) are located at the upper or lower end of the grouting wall. The vertical keels (8) are vertically located in the middle or at the end of the grouting wall. The window keels (18) are arranged around the window openings. The door keels (16) are arranged around the door openings.

7. A lightweight steel double-sided waterproof backing grouting wall according to claim 6, characterized in that... The window frame (18) or door frame (16) and the waterproof backing (3) form a reinforced support cavity (20), which is filled with C30 concrete, and the remaining area of ​​the grouting wall is filled with lightweight concrete (19).

8. A lightweight steel double-sided waterproof backing grouting wall according to claim 1, characterized in that... The junction area (21) where the two grouting walls are connected is filled with C30 concrete and reinforced with threaded steel bars (22). The remaining area of ​​the grouting wall is filled with lightweight concrete (19).

9. A construction method for a grouting wall using a light steel double-sided waterproof backing panel as described in any one of claims 1-8, characterized in that... It includes two approaches: on-site construction and factory prefabrication, and includes the following steps: On-site construction process: S1. On-site keel installation: Combine and fix various types of light steel keels (1) or threaded steel (22) or structural column steel reinforcement components (14) or steel structural components according to construction requirements to form the skeleton of the grouting wall; S2. On-site waterproof backing board fabrication and installation: On-site, the insulation layer (31), polymer mortar, and fiberglass mesh are compositely molded to form a waterproof backing board (3). The waterproof backing board (3) is installed on both sides or ends of the grouting wall frame to ensure that the waterproof backing board (3) is firmly connected to the light steel keel (1) to form a closed grouting cavity. The insulation layer (31) includes high-density extruded polystyrene board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S3. Pipeline (12) pre-embedding: According to the design requirements, pipeline (12) and junction box (13) are pre-embedded in the closed grouting wall and the positioning and fixing are completed; this step is omitted if there is no pre-embedding requirement. S4. Grouting: Grouting concrete (2) is poured into the sealed grouting cavity. During the pouring process, the concrete is vibrated simultaneously to remove air and ensure compaction. After pouring, the concrete is kept moist and cured. S5. Surface painting: Level and paint the outer surface of the waterproof backing (3) to form an outer paint layer (4). Apply anti-crack mesh tape to the joint of the waterproof backing (3) before painting. Factory prefabrication process: S1'. Factory prefabricated waterproof back panel: The insulation layer (31), polymer mortar, and fiberglass mesh (33) are composite and pressed into a standardized waterproof back panel (3) in the factory; wherein, the insulation layer (31) includes high-density extruded board, TEPS homogeneous board, foamed ceramic insulation board, foam glass insulation board, and ASG inorganic composite insulation board. S2'. On-site keel installation: Combine and fix various types of light steel keels (1) or threaded steel (22) or structural column steel reinforcement components (14) or steel structural components according to construction requirements to form the skeleton of the grouting wall; On-site assembly of waterproof back panels: The prefabricated waterproof back panels (3) are assembled and fixed on both sides or ends of the grouting wall frame to form a closed grouting cavity. S3'. Pipeline (12) pre-embedded: According to the design requirements, pipeline (12) and junction box (13) are pre-embedded in the closed grouting wall and the positioning and fixing are completed; this step is omitted if there is no pre-embedding requirement. S4'. Grouting, pour grouting concrete (2) into the closed grouting cavity, vibrate simultaneously during the pouring process, remove air and ensure compaction, and keep moist after pouring. S5'. Surface painting: Level and paint the outer surface of the waterproof backing (3) to form an outer paint layer (4). Apply anti-crack mesh tape to the joint of the waterproof backing (3) and then paint.

10. A construction method for a lightweight steel double-sided waterproof backing grouting wall according to claim 9, characterized in that... In step S4 or S4', when zonal grouting is required, use an immersion vibrator to focus on vibrating along the reinforced area and the junction of the zones, and use a plate vibrator to level it; vibrate until the concrete surface is covered with grout and no obvious air bubbles escape. Maintenance involves covering the area with a plastic film to retain moisture.

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