Fabricated building wall and mounting method thereof

Abstract

The invention discloses an assembly type building wall and a mounting method thereof, and relates to the technical field of assembly type constructions.The assembly type building wall is technically characterized by comprising a foundation and a wall body, a plurality of evenly-distributed pre-buried connecting sleeves are symmetrically mounted at the bottom of the wall body, and steel bar alignment structures are arranged in the pre-buried connecting sleeves located in the end area of the wall body; the steel bar alignment structure comprises a limiting ring coaxially and fixedly installed at a port of the embedded connecting sleeve, the embedded steel bar can be directly and visually calibrated through the alignment cylinder without relying on a reflective mirror, the view blind area and imaging deviation of traditional observation are avoided, and the requirement for experience of operators is lowered; meanwhile, the alignment cylinder can directly serve as a temporary cushion block, and the step of presetting a cushion block in a traditional process is omitted; in addition, when the alignment barrel retracts, the telescopic air bag can be extruded, the edge sealing assembly is driven to stretch out, the alignment barrel is left in the sleeve and is matched with the grouting circulation hole in the sleeve to enable grout to be fully filled, and the connection strength of the wall and the foundation is further enhanced.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, specifically to a prefabricated building wall and its installation method. Background Technology

[0002] Prefabricated buildings are a type of building structure formed by prefabricating components in a factory and assembling them on-site. They possess core advantages such as high construction efficiency, environmental friendliness, and controllable component quality, and have become one of the core directions of building industrialization development. Prefabricated walls, as key enclosure and load-bearing components of prefabricated buildings, directly determine the overall structural stability and construction cycle of the building through their installation accuracy and construction efficiency. The existing standard installation process for prefabricated walls is as follows: after pre-embedding lower reinforcing bars in the corresponding installation area on the foundation, spacers are placed at the pre-set support points; then, using specialized lifting equipment and a crane, the prefabricated wall panel is hoisted directly above the area of ​​the lower embedded reinforcing bars, completing the preparatory work before alignment and placement.

[0003] However, the existing precast wall panel alignment and placement process relies on manual assistance. The specific procedure is as follows: during the wall panel's descent, operators manually make initial corrections to the panel's posture; when the connecting sleeve at the bottom of the precast wall panel approaches the lower embedded reinforcing steel, hoisting is paused, and operators use a reflector to observe the alignment between the connecting sleeve and the lower embedded steel. If the alignment is satisfactory, the wall panel is placed on a support block for temporary support; if the alignment is unsatisfactory, operators must repeatedly observe using the reflector and manually push the wall panel for fine-tuning until the alignment is satisfactory. This operating mode has significant drawbacks: firstly, the reflector has inherent blind spots and angular deviations in imaging, easily leading to misjudgments of alignment; secondly, manual fine-tuning using a reflector is cumbersome, resulting in low construction efficiency and requiring highly experienced operators. Therefore, we propose a new type of prefabricated building wall and its installation method. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a prefabricated building wall and its installation method, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated building wall and its installation method, comprising a foundation and a wall, wherein a plurality of evenly distributed pre-embedded connecting sleeves are symmetrically installed at the bottom of the wall, and a steel reinforcement alignment structure is provided in the pre-embedded connecting sleeve located in the end region of the wall.

[0006] The rebar alignment structure includes a limiting ring coaxially fixedly installed at the port of the pre-embedded connecting sleeve. The inner cavity of the pre-embedded connecting sleeve is slidably connected to an alignment cylinder coaxially adapted to the pre-embedded connecting sleeve. The alignment cylinder is integrally formed from a bottom ring, a connecting cylinder, and a top ring, wherein the bottom ring is located at the bottom of the connecting cylinder, the top ring is located at the top of the connecting cylinder, and the bottom ring, the connecting cylinder, and the top ring are coaxially arranged. A retractable airbag is fixedly installed on the top of the top ring of the alignment cylinder and is fixedly connected to the inner top wall of the pre-embedded connecting sleeve. A one-way valve air guide pipe is fixedly installed on the retractable airbag and communicates with the inner cavity of the retractable airbag. The air outlet port of the one-way valve air guide pipe is provided with an edge sealing auxiliary component located inside the wall.

[0007] Preferably, both the connecting cylinder and the top ring are provided with a plurality of evenly distributed grouting flow holes; the connecting cylinder is adapted to and slidably connected to the limiting ring; the volume of the bottom ring is larger than the volume of the limiting ring and the top ring.

[0008] Preferably, the edge sealing auxiliary component includes an air tank fixedly installed inside the wall body. The air tank is connected to a retractable airbag via an air guide pipe with a one-way valve. A piston plate is slidably and sealingly connected to the inner wall of the air tank. A push rod penetrating the air tank is fixedly installed at the bottom of the piston plate. A rectangular receiving groove is opened at the bottom of the wall body. A rectangular baffle that is slidably connected to the rectangular receiving groove is fixedly installed at the lower end of the push rod. A compartment plate is fixedly installed at the center of the inner wall of the rectangular baffle. A multi-chamber airbag is fixedly installed at the bottom of both the rectangular baffle and the compartment plate.

[0009] Preferably, the multi-chamber airbag has several cavity-type dividing plates fixedly installed inside, which divide the multi-chamber airbag into independent, non-communicating sub-chambers.

[0010] Preferably, the upper and lower ends of several pre-embedded connecting sleeves are interconnected by transverse connecting pipes and longitudinal connecting pipes, wherein the pre-embedded connecting sleeves near the two sides of the compartment plate are not interconnected, and the compartment plate divides the grouting area surrounded by the foundation, wall, compartment plate and multi-cavity airbag into two independent sub-grouting compartments.

[0011] Preferably, an upper grouting pipe and a lower grouting pipe are fixedly installed on the pre-embedded connecting sleeve in the middle area of ​​the sub-grouting chamber from top to bottom.

[0012] Preferably, a number of pre-embedded steel bars corresponding one-to-one with the pre-embedded connecting sleeves are symmetrically installed on the top of the foundation.

[0013] An installation method applicable to the above-mentioned prefabricated building wall, the installation steps of which are as follows: S1. Hoist the wall to the pre-set area of ​​the foundation, and after initially calibrating it to the area where the embedded steel bars are distributed, lower it to a position 30cm-50cm away from the top of the embedded steel bars and then pause. S2. Pull out the alignment sleeve inside the pre-embedded connecting sleeve at the end of the wall, visually observe and make slight horizontal adjustments to the wall so that the pre-embedded steel bars are within the range of the inner wall of the alignment sleeve; S3. Stabilize the wall and slowly lower it so that the pre-embedded steel bars are inserted into the alignment tube until the bottom of the wall fits against the bottom ring to achieve temporary support; S4. By using the retraction of the alignment cylinder to compress the retractable airbag, the rectangular baffle, compartment plate and multi-chamber airbag are driven to extend, so that the multi-chamber airbag fits the foundation surface. S5. After reinforcing the external supports on both sides of the wall, release the hoisting equipment; S6. Apply sealing material to the junction of the wall and the foundation along the area defined by the rectangular baffle; S7. Inject grout into one sub-grouting chamber through the lower grouting pipe until the grout flows out steadily from the corresponding upper grouting pipe without air bubbles, then stop grouting; repeat this process to complete the grouting of the other sub-grouting chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a pull-out alignment sleeve that is coaxially adapted to the pre-embedded connecting sleeve, the relative position of the pre-embedded steel bar and the alignment sleeve can be directly observed visually without relying on a reflector. This avoids the blind spots and imaging deviations of traditional observation, makes the horizontal fine-tuning of the wall operation more convenient, reduces the requirements for the operator's on-site experience, and significantly improves the accuracy of alignment calibration and construction efficiency.

[0015] 2. By setting the bottom ring to have a volume larger than the positioning ring and the top ring, the bottom ring can directly contact the foundation when the wall is placed, acting as a temporary pad to achieve stable support for the wall. This eliminates the need for pre-setting pads in the traditional process and simplifies the construction process.

[0016] 3. By setting a retractable alignment cylinder, the retraction process compresses the expandable airbag, which drives the rectangular baffle, compartment plate and multi-chamber airbag of the edge sealing auxiliary component to extend. The multi-chamber airbag adaptively fits the foundation to improve the sealing of the joint, and the rectangular baffle can also limit the sealing range. The alignment cylinder is finally left in the pre-embedded connecting sleeve, and the grouting flow hole on it allows the grout to fully fill the gap between the sleeve and the steel bar, further enhancing the structural strength of the wall and foundation joint. Attached Figure Description

[0017] Figure 1 This is a complete structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the pre-embedded reinforcing bars of the present invention; Figure 3 For the present invention Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A above; Figure 5 This is a schematic diagram of the bottom structure of the wall of the present invention; Figure 6 This is a schematic diagram of the distribution structure of the transverse and longitudinal connecting pipes within the wall of the present invention; Figure 7 This is a schematic diagram of the alignment cylinder of the present invention; Figure 8 For the present invention Figure 7 Another perspective structural diagram; Figure 9 This is a schematic diagram of the internal structure of the multi-cavity airbag of the present invention; Figure 10 For the present invention Figure 9 A magnified structural diagram of point B above.

[0018] In the picture: 1. Foundation; 2. Wall; 3. Embedded connecting sleeve; 4. Reinforcing steel alignment structure; 41. Limiting ring; 42. Alignment cylinder; 421. Bottom ring; 422. Connecting cylinder; 423. Top ring; 43. Telescopic airbag; 44. Air guide pipe with one-way valve; 45. Edge sealing auxiliary component; 451. Air tank; 452. Piston plate; 453. Push rod; 454. Rectangular baffle; 455. Compartment plate; 456. Multi-chamber airbag; 5. Horizontal connecting pipe; 6. Longitudinal connecting pipe; 7. Sub-grouting chamber; 8. Upper grouting pipe; 9. Lower grouting pipe; 10. Embedded reinforcing steel. Detailed Implementation

[0019] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0020] This invention provides a technical solution: Please see Figures 1-10 A prefabricated building wall includes a foundation 1 and a wall 2. Several evenly distributed pre-embedded connecting sleeves 3 are symmetrically installed at the bottom of the wall 2. A steel reinforcement alignment structure 4 is provided in the pre-embedded connecting sleeves 3 located in the end area of ​​the wall 2.

[0021] The rebar alignment structure 4 includes a limiting ring 41 coaxially fixedly installed at the port of the pre-embedded connecting sleeve 3. The inner cavity of the pre-embedded connecting sleeve 3 is slidably connected to an alignment cylinder 42 coaxially adapted to the pre-embedded connecting sleeve 3. The alignment cylinder 42 is integrally formed by a bottom ring 421, a connecting cylinder 422, and a top ring 423. The bottom ring 421 is located at the bottom of the connecting cylinder 422, and the top ring 423 is located at the top of the connecting cylinder 422. The bottom ring 421, the connecting cylinder 422, and the top ring 423 are coaxially arranged. A retractable airbag 43 is fixedly installed on the top of the top ring 423 of the alignment cylinder 42 and is fixedly connected to the inner top wall of the pre-embedded connecting sleeve 3. A one-way valve air pipe 44 is fixedly installed on the retractable airbag 43 and communicates with the inner cavity of the retractable airbag 43. The air outlet of the one-way valve air pipe 44 is provided with a sealing auxiliary component 45 located inside the wall 2.

[0022] After the wall 2 is hoisted to the preset position, the alignment cylinder 42, which is adapted to the limiting ring 41, is pulled out from the pre-embedded connecting sleeve 3. The wall 2 is then horizontally fine-tuned by visual observation so that the pre-embedded steel bar 10 is located within the inner wall range of the alignment cylinder 42. When the wall 2 descends, the pre-embedded steel bar 10 is inserted into the alignment cylinder 42, and the bottom ring 421 contacts the foundation 1 to provide temporary support. When the alignment cylinder 42 retracts, the top ring 423 compresses the retractable airbag 43, and the gas is introduced into the sealing auxiliary component 4 through the air guide pipe 44 with a one-way valve. 5 drives it to extend and fit the foundation 1; wherein the limiting ring 41 limits the sliding stroke of the alignment cylinder 42, the alignment cylinder 42 avoids traditional observation deviation, reduces the requirements of operation experience and eliminates the step of preset pad block, the telescopic airbag 43 transmits the retraction pressure, the air guide pipe 44 with one-way valve realizes directional air guide, the sealing auxiliary component 45 improves the connection sealing performance and limits the sealing range, and the alignment cylinder 42 cooperates with the grouting flow hole to allow the grout to be fully filled, enhancing the connection strength between the wall 2 and the foundation 1.

[0023] In some embodiments, the connecting cylinder 422 and the top ring 423 are each provided with a plurality of evenly distributed grouting flow holes; the connecting cylinder 422 is adapted to and slidably connected to the limiting ring 41; the volume of the bottom ring 421 is greater than the volume of the limiting ring 41 and the top ring 423.

[0024] In this embodiment, after pulling out the alignment sleeve 42, the embedded steel bar 10 can be visually calibrated. When the wall 2 descends, the bottom ring 421 contacts the foundation 1 to form a temporary support. During the grouting stage, the grouting flow holes on the connecting sleeve 422 and the top ring 423 allow the grout to pass smoothly and fully fill the gap between the embedded connecting sleeve 3 and the embedded steel bar 10. The matching sliding of the connecting sleeve 422 and the limiting ring 41 ensures the expansion and contraction stability of the alignment sleeve 42. The large volume of the bottom ring 421 eliminates the need for the pre-set pad step. The grouting flow holes ensure that the grout is evenly distributed, further enhancing the connection strength between the wall 2 and the foundation 1.

[0025] Please see Figure 4 , Figure 5 , Figure 9 and Figure 10 The edge sealing auxiliary component 45 includes an air tank 451 fixedly installed inside the wall 2. The air tank 451 is connected to the retractable airbag 43 through an air guide pipe 44 with a one-way valve. A piston plate 452 is slidably and sealingly connected to the inner wall of the air tank 451. A push rod 453 penetrating the air tank 451 is fixedly installed at the bottom of the piston plate 452. A rectangular receiving groove is opened at the bottom of the wall 2. A rectangular baffle 454 slidably connected to the rectangular receiving groove is fixedly installed at the lower end of the push rod 453. A compartment plate 455 is fixedly installed at the center of the inner wall of the rectangular baffle 454. A multi-chamber airbag 456 is fixedly installed at the bottom of both the rectangular baffle 454 and the compartment plate 455.

[0026] When the retractable airbag 43 is pressurized, gas is introduced into the air tank 451 inside the wall 2 through the air guide pipe 44 with a one-way valve. This pushes the piston plate 452 inside the air tank 451 downward, which in turn drives the push rod 453 to push the rectangular baffle 454, the compartment plate 455, and the multi-chamber airbag 456 out of the rectangular receiving groove at the bottom of the wall 2, so that the multi-chamber airbag 456 fits against the surface of the foundation 1. The multi-chamber airbag 456 can adapt to the flatness of the foundation 1 to achieve a tight fit, improving the sealing performance at the junction of the wall 2 and the foundation 1. The rectangular baffle 454 can limit the sealing range, and the compartment plate 455 divides the space into independent sub-grouting chambers 7 to ensure grouting quality and simplify the sealing operation.

[0027] In some embodiments, a plurality of cavity partition plates are fixedly installed inside the multi-cavity airbag 456, which divide the multi-cavity airbag 456 into independent, non-communicating sub-cavities.

[0028] In this embodiment, when the edge sealing auxiliary component 45 is activated, the multi-cavity airbag 456 extends out along with the rectangular baffle 454 and the compartment plate 455 to fit the foundation 1. The cavity-type dividing plate inside divides the multi-cavity airbag 456 into independent, non-interconnected sub-air chambers. Each sub-air chamber can adaptively deform according to the flatness of the foundation 1 surface; enhance the sound insulation and heat preservation performance at the junction of the wall 2 and the foundation 1, and the damage to a single sub-air chamber does not affect the overall sealing effect, ensuring the edge sealing quality and the stability of subsequent grouting.

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 Several pre-embedded connecting sleeves 3 are interconnected at both ends by transverse connecting pipes 5 and longitudinal connecting pipes 6. The pre-embedded connecting sleeves 3 near the two sides of the compartment plate 455 are not interconnected. The compartment plate 455 divides the grouting area surrounded by the foundation 1, wall 2, compartment plate 455 and multi-cavity airbag 456 into two independent sub-grouting compartments 7.

[0030] During grouting, the grout can flow between the pre-embedded connecting sleeves 3 in the corresponding sub-grouting chamber 7 through the connecting pipe; the horizontal connecting pipe 5 and the vertical connecting pipe 6 enable the grout to spread rapidly, and the independent sub-grouting chambers 7 divided by the compartment plate 455 avoid mutual interference of the grout during grouting, ensuring that each area is grouted evenly and fully.

[0031] Please see Figure 1 , Figure 2 , Figure 5 and Figure 6 The upper grouting pipe 8 and the lower grouting pipe 9 are fixedly installed on the pre-embedded connecting sleeve 3 in the middle area of ​​the sub-grouting chamber 7 from top to bottom.

[0032] During the grouting stage, grout is continuously injected into the sub-grouting chamber 7 through the lower grouting pipe 9 on the pre-embedded connecting sleeve 3 in the middle area of ​​the sub-grouting chamber 7. When the grout overflows steadily from the corresponding upper grouting pipe 8 without air bubbles, it indicates that the grouting is full, and the grouting operation of the sub-grouting chamber 7 is then stopped.

[0033] Please see Figures 1-6 Several pre-embedded steel bars 10, corresponding one-to-one with the pre-embedded connecting sleeves 3, are symmetrically installed on the top of the foundation 1.

[0034] After the hoisted wall 2 is initially aligned directly above the distribution area of ​​the pre-embedded steel bars 10, the wall 2 is visually fine-tuned by pulling out the alignment sleeve 42 inside the pre-embedded connecting sleeve 3, so that the pre-embedded steel bars 10 are accurately inserted into the alignment sleeve 42.

[0035] An installation method applicable to the above-mentioned prefabricated building wall, the installation steps of which are as follows: S1. Hoist the wall 2 to the pre-set area above the foundation 1, and after initially calibrating it to the area above the distribution area of ​​the pre-embedded steel bars 10, lower it to a distance of 30cm-50cm from the top of the pre-embedded steel bars 10 and pause. S2. Pull out the alignment sleeve 42 inside the pre-embedded connecting sleeve 3 at the end of the wall 2, visually observe and make slight horizontal adjustments to the wall 2 so that the pre-embedded steel bar 10 is located within the inner wall range of the alignment sleeve 42. S3. Stabilize the wall 2 and slowly lower it so that the pre-embedded steel bar 10 is inserted into the alignment tube 42 until the bottom of the wall 2 is attached to the bottom ring 421 to achieve temporary support. S4. By retracting and squeezing the retractable airbag 43 with the help of the alignment cylinder 42, the rectangular baffle 454, the compartment plate 455 and the multi-chamber airbag 456 are driven to extend, so that the multi-chamber airbag 456 fits against the surface of the foundation 1. S5. After reinforcing the external supports on both sides of wall 2, release the hoisting equipment; S6. Apply sealing material to the junction of wall 2 and foundation 1 along the area defined by rectangular baffle 454; S7. Inject grout into one sub-grouting chamber 7 through the lower grouting pipe 9 until the grout overflows steadily from the corresponding upper grouting pipe 8 without air bubbles, then stop grouting; repeat this process to complete the grouting of the other sub-grouting chamber 7.

[0036] In practical use, the working principle of this invention is as follows: When assembling the building wall, the wall 2 is smoothly hoisted to the designated area above the foundation 1 using professional hoisting equipment according to specifications. Maintaining a vertical position, it is slowly lowered. Operators use visual inspection and simple distance measuring tools to initially align the wall 2 directly above the distribution area of ​​the embedded steel bars 10, avoiding excessive initial deviation. The wall 2 is then lowered to a point 30-50cm from the top of the embedded steel bars 10 and paused—this height allows operators to easily reach the alignment sleeve 42 while clearly observing the position of the embedded steel bars 10 below, providing operational space for precise alignment (non-load-bearing enclosure walls: thickness is typically 100mm-200mm. Load-bearing walls: thickness is mostly 200mm-400mm). The embedded connecting sleeve 3 at the bottom of the wall 2 is lowered to near the top of the embedded steel bars 10. Due to the wall thickness, the embedded connecting sleeve 3 cannot be directly seen; therefore, a reflector is needed for observation.

[0037] At this point, there is no need to rely on a traditional reflector. The alignment cylinder 42 inside the pre-embedded connecting sleeve 3 at the end of the wall 2 can be pulled out directly. Since the alignment cylinder 42 and the pre-embedded connecting sleeve 3 adopt a strict coaxial centerline design, and the connecting cylinder 422, the inner wall of the pre-embedded connecting sleeve 3, and the limiting ring 41 are all precisely sliding and adapted, the retractable airbag 43 deforms elastically in sync during the pulling process, which will not hinder the operation. The alignment cylinder 42 that is finally pulled out can remain completely coaxial with the pre-embedded connecting sleeve 3, and its central axis is completely coincident with the central axis of the pre-embedded connecting sleeve 3. This is equivalent to extending the "alignment reference" of the pre-embedded connecting sleeve 3 directly to the height that the operator can see directly (the pre-embedded connecting sleeve 3 may slide out automatically during transportation. A shell removal limit strip can be set at the bottom of the wall. When using, the limit strip can be removed in advance).

[0038] The operator stands to the side of wall 2 and can directly observe without any auxiliary tools: using the inner wall edge or central axis of the alignment cylinder 42 as a reference, compare whether the top of the corresponding pre-embedded steel bar 10 is below the alignment cylinder 42. If the top of the steel bar deviates from the inner wall range of the alignment cylinder 42, it means that it is not aligned. At this time, since wall 2 is in a suspended state, the lateral movement resistance is very small. The operator can gently push wall 2 to make fine adjustments, and observe while moving until the pre-embedded steel bar 10 is within the inner wall range of the alignment cylinder 42 (the alignment cylinder 42 is made of a material with wear resistance, rigidity and lightweight properties, such as glass fiber reinforced nylon or polycarbonate integral molding).

[0039] Since the alignment sleeve 42 and the pre-embedded connecting sleeve 3 are completely coaxial, when the alignment sleeve 42 is precisely aligned with the pre-embedded steel bar 10, the pre-embedded connecting sleeve 3 at the bottom of the wall 2 is also aligned with the pre-embedded steel bar 10 at the same time. This avoids the blind spots and imaging deviations of traditional reflectors. Even inexperienced personnel can quickly complete the alignment through intuitive visual comparison without repeated verification.

[0040] After the alignment adjustment is completed, the operators stabilize the wall 2 from both sides to prevent it from swaying left and right during descent. Then, they control the hoisting equipment to descend slowly and uniformly, so that the pre-embedded steel bars 10 on the foundation 1 are smoothly inserted into the alignment sleeve 42 at the bottom end of the wall 2. (It should be noted that the pre-embedded connecting sleeve 3 with the steel bar alignment structure 4 should avoid the four corners of the wall 2, and is preferably placed in a suitable area away from the four corners at the end of the wall 2 to avoid subsequent stress concentration that may cause cracking at the end of the wall 2.) The hoisting equipment continues to lower the wall 2. When the bottom ring 421 of the alignment sleeve 42 contacts the surface of the foundation 1, the foundation 1 generates an upward reaction force on the bottom ring 421, forcing the alignment sleeve 42 to slide upward along the inner wall of the pre-embedded connecting sleeve 3 until the bottom of the wall 2 is completely in contact with the bottom ring 421. At this time, the bottom ring 421 acts as a temporary pad to achieve stable support for the wall 2, replacing the step of pre-setting pads in the traditional process and simplifying the construction process.

[0041] During the retraction of the alignment cylinder 42 into the pre-embedded connecting sleeve 3, the top ring 423 at the top of the alignment cylinder 42 will continuously squeeze the retractable airbag 43 (the retractable airbag 43 can be made of nitrile rubber or silicone rubber as the base material and the inner wall is reinforced with polyester fiber). The gas pre-filled in the retractable airbag 43 is squeezed due to pressure and flows into the air tank 451 inside the wall 2 through the air guide pipe 44 with one-way valve (the direction of the one-way valve is to only allow the gas in the retractable airbag 43 to flow to the sealing auxiliary component 45, and prevent the gas from flowing back). After the gas enters the gas tank 451, it pushes the piston plate 452 to slide downward along the inner wall of the gas tank 451. The piston plate 452 drives the push rod 453, which is fixedly connected to it, to move downward in sync, thereby pushing the rectangular baffle 454, the compartment plate 455 and the multi-chamber airbag 456 to extend downward along the rectangular receiving groove at the bottom of the wall 2 until the multi-chamber airbag 456 is completely attached to the surface of the foundation 1 (the multi-chamber airbag 456 is filled with gas). Because the multi-cavity airbag 456 is divided into multiple independent and non-connected sub-cavities by a cavity-type partition plate, each sub-cavity can adaptively deform according to the flatness of the foundation 1 surface after being compressed, ensuring a tight fit between the multi-cavity airbag 456 and the foundation 1. This effectively solves the problem of poor sealing at the junction of the wall and the foundation in traditional construction, thereby improving the sound insulation and thermal insulation performance of the wall, reducing energy loss during winter heating and summer cooling, and achieving energy saving (sound insulation and noise reduction: the independent sub-cavities of the multi-cavity airbag can adapt to the flatness of the foundation to achieve a seamless fit and block sound transmission through gaps; sound waves need to penetrate multiple sub-cavities and partition plates, and the energy is attenuated multiple times, and the damage to a single sub-cavity does not affect the overall sound insulation effect, which is better than the problem of easy sound leakage and failure when damaged in a single cavity. Thermal insulation: the independent sub-cavities restrict air convection and reduce heat exchange; the seamless fit blocks the penetration of gaps, and the multi-layer air cavities increase the thermal conduction resistance. Compared with the defects of strong convection and a lot of heat leakage in single cavities, the thermal insulation effect of the multi-cavity structure is better).

[0042] Subsequently, external support equipment is used to reinforce both sides of wall 2 to ensure that wall 2 remains vertically stable during subsequent construction. At this point, the hoisting equipment can be released, completing the temporary fixation of the wall. Next, edge sealing is performed. The operator uses a scraper to apply edge sealing material to the junction of wall 2 and foundation 1. Since the rectangular baffle 454 forms a clear edge sealing boundary, it can effectively limit the application range of the edge sealing material, preventing excessive edge sealing material from flowing into the sub-grouting chamber 7 and affecting the subsequent grouting quality. No additional edge sealing tools are needed to limit the area, simplifying the edge sealing operation.

[0043] After the sealing process is completed, the external grouting equipment is started, and the output port of the grouting equipment is connected to the lower grouting pipe 9 at the bottom of one of the sub-grouting chambers 7 to continuously inject grout into the sub-grouting chamber 7. After the grout enters the sub-grouting chamber 7 through the lower grouting pipe 9, it fills the internal space of the sub-grouting chamber 7 on one hand, and on the other hand, it spreads rapidly to all the pre-embedded connecting sleeves 3 in the sub-grouting chamber 7 through the transverse connecting pipe 5 and the longitudinal connecting pipe 6 on the pre-embedded connecting sleeve 3 (it should be noted that the compartment plate 455 divides the grouting area surrounded by the foundation 1, wall 2, rectangular baffle 454 and multi-cavity airbag 456 into two independent sub-grouting chambers 7, and the pre-embedded connecting sleeves 3 on both sides of the compartment plate 455 are not connected to each other). Meanwhile, since the connecting cylinder 422 and the top ring 423 of the alignment cylinder 42 are both provided with uniformly distributed grouting flow holes, the grout can pass smoothly through these flow holes and completely fill the inner cavity of the pre-embedded connecting sleeve 3, ensuring that the gap between the pre-embedded steel bar 10 and the pre-embedded connecting sleeve 3 is fully filled by the grout. After the grout fills the entire sub-grouting chamber 7 and all the corresponding pre-embedded connecting sleeves 3, it will continuously overflow from the upper grouting pipe 8 at the top of the sub-grouting chamber 7. When the overflowing grout flow is stable and no air bubbles are generated, it indicates that the grouting is full. At this time, the grouting operation is stopped, and the grouting process of the sub-grouting chamber is completed. Then, the same process is followed to grout another sub-grouting chamber 7, and finally a firm connection between the wall 2 and the foundation 1 is achieved.

[0044] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A prefabricated building wall, comprising a foundation (1) and a wall (2), wherein a plurality of evenly distributed pre-embedded connecting sleeves (3) are symmetrically installed at the bottom of the wall (2), characterized in that: A steel reinforcement alignment structure (4) is provided in the pre-embedded connecting sleeve (3) located in the end area of ​​the wall (2); The rebar alignment structure (4) includes a limiting ring (41) coaxially fixedly installed at the port of the pre-embedded connecting sleeve (3). The inner cavity of the pre-embedded connecting sleeve (3) is slidably connected to an alignment sleeve (42) coaxially adapted to the pre-embedded connecting sleeve (3). The alignment sleeve (42) is integrally formed from a bottom ring (421), a connecting sleeve (422), and a top ring (423). The bottom ring (421) is located at the bottom of the connecting sleeve (422), and the top ring (423) is located at the top of the connecting sleeve (422). The ring (421), connecting cylinder (422) and top ring (423) are coaxially arranged; the top ring (423) of the alignment cylinder (42) is fixedly installed with a retractable airbag (43) that is fixedly connected to the inner top wall of the pre-embedded connecting sleeve (3); the retractable airbag (43) is fixedly installed with a one-way valve air pipe (44) that communicates with the inner cavity of the retractable airbag (43); the air outlet of the one-way valve air pipe (44) is provided with an edge sealing auxiliary component (45) located inside the wall (2).

2. The prefabricated building wall according to claim 1, characterized in that: The connecting cylinder (422) and the top ring (423) are each provided with a number of evenly distributed grouting flow holes; the connecting cylinder (422) is adapted to and slidably connected to the limiting ring (41); the volume of the bottom ring (421) is greater than the volume of the limiting ring (41) and the top ring (423).

3. A prefabricated building wall according to claim 1, characterized in that: The edge sealing auxiliary component (45) includes an air tank (451) fixedly installed inside the wall (2). The air tank (451) is connected to a retractable airbag (43) through an air guide pipe (44) with a one-way valve. A piston plate (452) is slidably and sealed to the inner wall of the air tank (451). A push rod (453) penetrating the air tank (451) is fixedly installed at the bottom of the piston plate (452). A rectangular receiving groove is opened at the bottom of the wall (2). A rectangular baffle (454) slidably connected to the rectangular receiving groove is fixedly installed at the lower end of the push rod (453). A compartment plate (455) is fixedly installed at the center of the inner wall of the rectangular baffle (454). A multi-chamber airbag (456) is fixedly installed at the bottom of both the rectangular baffle (454) and the compartment plate (455).

4. A prefabricated building wall according to claim 3, characterized in that: The multi-chamber airbag (456) has several cavity-type dividing plates fixedly installed inside, which divide the multi-chamber airbag (456) into independent, non-communicating sub-chambers.

5. A prefabricated building wall according to claim 1, characterized in that: Several of the pre-embedded connecting sleeves (3) are connected to each other at both ends by a transverse connecting pipe (5) and a longitudinal connecting pipe (6). The pre-embedded connecting sleeves (3) near the two sides of the compartment plate (455) are not connected to each other. The compartment plate (455) divides the grouting area surrounded by the foundation (1), the wall (2), the compartment plate (455) and the multi-cavity airbag (456) into two independent sub-grouting compartments (7).

6. A prefabricated building wall according to claim 5, characterized in that: The upper grouting pipe (8) and the lower grouting pipe (9) are fixedly installed on the pre-embedded connecting sleeve (3) in the middle area of ​​the sub-grouting chamber (7) from top to bottom.

7. A prefabricated building wall according to claim 1, characterized in that: The top of the foundation (1) is symmetrically equipped with several pre-embedded steel bars (10) that correspond one-to-one with the pre-embedded connecting sleeves (3).

8. An installation method applicable to the prefabricated building wall according to any one of claims 1-7, wherein the installation steps are as follows: S1. Hoist the wall (2) to the area directly above the foundation (1) preset area, initially calibrate it to the area directly above the distribution area of ​​the embedded steel bars (10), and then lower it to a position 30cm-50cm away from the top of the embedded steel bars (10) and pause. S2. Pull out the alignment sleeve (42) inside the pre-embedded connecting sleeve (3) at the end of the wall (2), visually observe and make slight horizontal adjustments to the wall (2) so that the pre-embedded steel bar (10) is located within the inner wall range of the alignment sleeve (42); S3. Stabilize the wall (2) and slowly lower it so that the pre-embedded steel bar (10) is inserted into the alignment tube (42) until the bottom of the wall (2) is attached to the bottom ring (421) to achieve temporary support; S4. By using the alignment cylinder (42) to retract and squeeze the retractable airbag (43), the rectangular baffle (454), the compartment plate (455) and the multi-chamber airbag (456) are driven to extend, so that the multi-chamber airbag (456) fits against the surface of the foundation (1). S5. After reinforcing the external supports on both sides of the wall (2), loosen the hoisting equipment; S6. Apply sealing material to the junction of the wall (2) and the foundation (1) along the area defined by the rectangular baffle (454); S7. Inject grout into one sub-grouting chamber (7) through the lower grouting pipe (9) until the grout overflows steadily from the corresponding upper grouting pipe (8) without any air bubbles, then stop grouting; repeat this process to complete the grouting of the other sub-grouting chamber (7).

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