Prefabricated building wall and construction method

Abstract

This application relates to a prefabricated building wall and its construction method. The main technical solution is a prefabricated building wall comprising multiple assembly bodies. Each assembly body includes an installation frame, multiple prefabricated wall panels located within the installation frame, and at least two vertically arranged connecting ribs. The sides of adjacent prefabricated wall panels are abutted together. The prefabricated wall panels have through holes for the horizontal insertion of the connecting ribs. The connecting ribs of adjacent assembly bodies are staggered along the thickness direction of the prefabricated wall panels. Each connecting rib has a variable filling steel structure component for abutting against the inner wall of the through hole, and a grout outlet hole located within the through hole. The opposing surfaces and side panels of two adjacent installation frames together form a casting cavity. The ends of the connecting ribs are provided with casting aids for allowing mortar to enter the connecting ribs. This application has the effect of shortening the construction period.

Description

Technical Field

[0001] This application relates to the field of building wall construction, and in particular to a prefabricated building wall and a construction method thereof. Background Technology

[0002] With the continuous development of the housing construction industry, prefabricated buildings are currently a hot topic. This involves combining and assembling prefabricated structures, such as prefabricated wall panels, which are manufactured in a factory beforehand and then transported to the construction site for assembly. These wall panels solve the problem of complex wall construction and can shorten the construction period.

[0003] The existing construction method for prefabricated walls involves hoisting prefabricated wall panels onto the floor slab, then grouting the gaps, binding reinforcing bars in the gaps between two prefabricated wall panels, setting up formwork, and pouring concrete to achieve the connection between the two prefabricated wall panels.

[0004] However, when the building space is large enough that the entire wall is too long, multiple prefabricated wall panels need to be assembled, and multiple steel reinforcement binding and cast-in-place operations are required, which is quite complicated and greatly extends the construction period. Summary of the Invention

[0005] To shorten the construction period, this application provides a prefabricated building wall and a construction method thereof.

[0006] This application provides a prefabricated building wall, which adopts the following technical solution:

[0007] A prefabricated building wall includes multiple assembly bodies. Each assembly body includes an installation frame, multiple prefabricated wall panels located within the installation frame, and at least two vertically arranged connecting ribs. The sides of adjacent prefabricated wall panels are abutted together. The prefabricated wall panels have through holes for the connecting ribs to pass horizontally. The connecting ribs of adjacent assembly bodies are staggered along the thickness direction of the prefabricated wall panels. Each connecting rib has a variable filling steel structure component for abutting against the inner wall of the through hole, and a grout outlet hole located within the through hole. Two side plates are fixed to the outer side of the installation frame and are arranged opposite each other along the thickness direction of the prefabricated wall panels. The distance between the two side plates gradually decreases away from the installation frame. The opposite surfaces of two adjacent installation frames and the side plates together form a casting cavity. The ends of the connecting ribs are located within the casting cavity. The ends of the connecting ribs are provided with casting aids for allowing mortar to enter the connecting ribs. The side plates between two installation frames are fixedly connected by tie bolts.

[0008] By adopting the above technical solution, firstly, multiple precast wall panels are assembled into the installation frame, and then multiple assembly bodies are cast and connected, which greatly reduces the number of cast-in-place pours and shortens the construction cycle; secondly, by connecting the side panels with tie bolts, the side panels can serve as templates, eliminating the step of setting up templates and further shortening the construction cycle; thirdly, by using connecting ribs, a group of precast wall panels can be quickly connected together. Furthermore, through the variable infill steel structure component, the smaller volume of the variable infill steel structure component when the connecting ribs are inserted into the perforations makes the insertion of the connecting ribs easier. After the connecting ribs are inserted, the volume of the variable infill steel structure component increases, making the connection between the connecting ribs and the perforations more stable, thus making the connection between the precast wall panels more stable. Then, with the help of casting aids, mortar is injected into the perforations. The mortar, variable infill steel structure component, and connecting ribs combine to form a reinforcing element, further improving the connection strength between the precast wall panels.

[0009] Optionally, the variable filling steel structure assembly includes a first reinforcing bar and two rotating sleeves. The first reinforcing bar is parallel to the connecting reinforcing tube and connected to the top of the connecting reinforcing tube. The rotating sleeves are rotatably fitted onto the connecting reinforcing tube. The proximal ends of the two rotating sleeves are threaded together. Each rotating sleeve is fixed with a second reinforcing bar. The diameter of the second reinforcing bar is equal to the diameter of the first reinforcing bar. The two second reinforcing bars are located on both sides of the first reinforcing bar. The radius of the perforation is equal to the sum of the radius of the rotating sleeve and the diameter of the second reinforcing bar.

[0010] By adopting the above technical solution, during the process of inserting the connecting rebar into the hole, the second rebar is located on both sides of the first rebar, and both the second and first rebars are higher than the axis of the connecting rebar. This means that the maximum outer diameter of the combined structure is smaller than the inner diameter of the hole, making it easier for the combined structure to be inserted into the hole, thereby reducing the difficulty of installation. After the combined structure has completely passed through the hole, the rotating sleeves on both sides are tightened simultaneously to drive the two second rebars to rotate at a certain angle away from the first rebar, so that the second rebars are lower than the axis of the connecting rebar. In this way, the first and second rebars are located on the upper and lower sides of the connecting rebar, respectively. The maximum outer diameter of the combined structure is equal to the inner diameter of the hole, allowing the combined structure to fill the hole and reduce the loosening of the precast wall panel.

[0011] Optionally, reinforcing cages are pre-embedded on both horizontal sides of the precast wall panel, and a vertically through-hole reserved groove is reserved on the side of the precast wall panel. The horizontal reinforcing bars of the reinforcing cage arranged along the thickness direction of the precast wall panel are exposed in the reserved groove. An installation vertical plate is movably connected in the reserved groove. The surface of the installation vertical plate is provided with multiple post-embedded reinforcing bars arranged along the arrangement direction of the precast wall panel. The post-embedded reinforcing bars are used to extend into the gaps between the horizontal reinforcing bars of the reinforcing cage.

[0012] By adopting the above technical solution, firstly, through the movable connection of the installation vertical plate, the installation vertical plate and the embedded steel bars can be moved to the depth of the reserved groove. Then, when two precast wall panels are assembled close together, the installation vertical plate is moved out, allowing the embedded steel bars to penetrate into the gaps between the horizontal bars, thereby reducing the interference of the embedded steel bars when the precast wall panels are assembled. Secondly, through the staggered arrangement of the embedded steel bars, not only can the connection strength between adjacent precast wall panels be strengthened, but also the cooperation between the embedded steel bars and the horizontal bars can make the force transmission of the steel structure more direct, thereby improving the shear resistance of the precast wall panels.

[0013] Optionally, one of the two opposing mounting vertical plates is a first mounting vertical plate and the other is a second mounting vertical plate. The first mounting vertical plate has a first through hole through which the rotating sleeve passes. The first through hole is a vertically oriented strip hole, and the inner top wall of the first through hole abuts against the top surface of the first reinforcing bar. The second mounting vertical plate has a second through hole through which the rotating sleeve passes. The second through hole is a vertically oriented strip hole, and two clamping rods are vertically fixed to the vertical side wall of the second through hole. The two clamping rods are located above and below the second reinforcing bar, respectively. When the second reinforcing bar moves below the axis of the connecting reinforcing tube as the rotating sleeve rotates, the rotating sleeve drives the first mounting vertical plate to move upward, and the second reinforcing bar drives the second mounting vertical plate to move downward. The embedded reinforcing bars on the first and second mounting vertical plates are vertically clamped to the transverse reinforcing bars of the reinforcing cage.

[0014] By adopting the above technical solution, during the tightening of the rotating sleeve, the second reinforcing bar rotates and moves downward, which in turn drives the second mounting vertical plate to move downward. This causes the embedded reinforcing bars on the second mounting vertical plate to press down on the horizontal reinforcing bars. At the same time, the second reinforcing bar moves downward and supports the connecting pipe and the first reinforcing bar, thereby driving the first mounting vertical plate to move upward. This causes the embedded reinforcing bars on the first mounting vertical plate to push up on the horizontal reinforcing bars. In this way, the embedded reinforcing bars on both sides jointly clamp the horizontal reinforcing bars on the two precast wall panels, thereby connecting the horizontal reinforcing bars on the two precast wall panels and improving the connection strength between the precast wall panels.

[0015] Optionally, the top of the first reinforcing bar is fixed with a pointed protrusion for insertion into the inner wall of the perforation.

[0016] By adopting the above technical solution, firstly, when the connecting tube moves upward under the support of the second reinforcing bar, the first reinforcing bar moves upward accordingly. The pointed protrusion of the first reinforcing bar gradually penetrates the inner wall of the hole, which can fix the position of the first reinforcing bar, thereby reducing the positional displacement of the connecting tube and improving the fixing effect of the connecting tube on the precast wall panel. Secondly, when the connecting tube moves upward under the support of the second reinforcing bar, the two second reinforcing bars are subjected to the reaction force of the inner wall of the hole. The resultant force of the two reaction forces is upward, which can more easily force the pointed protrusion of the first reinforcing bar to penetrate the inner wall of the hole. Thirdly, the first reinforcing bar has the characteristic of prestressed upward movement, that is, the first reinforcing bar has the allowance to move upward. This allowance means that the first mounting vertical plate also has the allowance to move upward. Therefore, the upward movement allowance of the embedded reinforcing bar of the first mounting vertical plate is extremely large, which makes the interference between the embedded reinforcing bar and the horizontal bar greater, thereby improving the clamping effect.

[0017] Optionally, at least two support rods are vertically fixed at the bottom of the first reinforcing bar, and the support rods are vertically slidably connected to the connecting reinforcing tube; a connecting block is fixed at the middle position of the bottom of the first reinforcing bar, and the connecting block has a first guide surface at both ends along the axial direction of the first reinforcing bar; the outer circumferential surface of the rotating sleeve has a protruding ring, and the protruding ring has a second guide surface; when the rotating sleeve rotates, the two rotating sleeves approach each other, and the second guide surface and the first guide surface are attached to each other and force the first reinforcing bar to move upward; the first guide surface has a plurality of first one-way teeth, and the second guide surface has a plurality of second one-way teeth; the first one-way teeth and the second one-way teeth disengage from each other along the tightening direction of the rotating sleeve, and the first one-way teeth and the second one-way teeth remain engaged with each other along the loosening direction of the rotating sleeve.

[0018] By adopting the above technical solution, firstly, when the rotating sleeve is tightened to make the second reinforcing bar move downward, the two rotating sleeves will move closer to each other. The approaching contact force will, through the cooperation of the second guide surface and the first guide surface, make the first reinforcing bar move upward a small distance, so as to force the pointed protrusion of the first reinforcing bar to further penetrate into the inner wall of the hole. Secondly, the mutual meshing of the second one-way tooth and the first one-way tooth will prevent the rotating sleeve from rotating in the loosening direction. That is, the rotating sleeve can only be tightened and cannot be loosened. In this way, the rotation position of the second reinforcing bar is limited, so as to prevent the second reinforcing bar from returning to its original position due to the reaction force of the inner wall of the hole or the rebound force of the embedded reinforcing bar. This maintains the stability of the clamping effect of the embedded reinforcing bar and the filling stability of the variable filling steel structure component.

[0019] Optionally, an installation gap is formed between two adjacent transverse reinforcement bars. At least two upwardly inclined guide rods are fixed to the outer side of the mounting frame. A guide sleeve is fixed to the side of the mounting vertical plate. The guide sleeve is slidably fitted onto the guide rod. The embedded reinforcement bar is parallel to the guide rod. When the mounting vertical plate moves along the direction of the guide rod, the embedded reinforcement bar is inserted into the installation gap of the transverse reinforcement bars of two adjacent reinforcement cages in succession.

[0020] By adopting the above technical solution, when the sides of the two precast wall panels abut each other, and during the process of the two precast wall panels being lowered into the installation frame together, the installation vertical plate contacts the bottom of the installation frame one step ahead of the precast wall panels, serving as a support for the installation vertical plate. As the precast wall panels continue to fall, the installation vertical plate moves upward relative to the precast wall panels. Then, guided by the guide rod, the installation vertical plate moves upward at an angle relative to the precast wall panels, and the embedded steel bars move upward at an angle through the installation gap, thereby completing the connection between adjacent precast wall panels, which is more efficient.

[0021] Secondly, since the embedded steel bars and horizontal bars are inclined together, when one of the precast wall panels is subjected to vertical vibration force, the force will be transmitted to the other precast wall panel through the horizontal bars and embedded steel bars. That is, the two precast wall panels share the force, and the force is transmitted downwards. Therefore, the cantilever effect is reduced, and the load-bearing capacity of the precast wall panels themselves can be used more to offset the force, which means that the force transmission is more efficient.

[0022] Optionally, the pouring auxiliary component includes two rubber plugs, a branch pipe, and a grouting hose. The rubber plugs are embedded in the end of the connecting rib pipe. The end of the rubber plug away from the connecting rib pipe is provided with a spring for abutting against the outer side of the mounting frame. The grout outlet end of the branch pipe is connected through the rubber plug. One end of the grouting hose is detachably connected to the grout inlet end of the branch pipe.

[0023] By adopting the above technical solution, firstly, by setting a spring, the elastic force of the spring will force the rubber plug to be inserted more tightly into the end of the connecting pipe, so as to achieve a seal; secondly, mortar can be injected into the rubber plug through the grouting hose and the branch pipe, and then injected into the connecting pipe through the rubber plug, and enters the perforation through the grout outlet hole of the connecting pipe. After the grouting is completed, the connection between the grouting hose and the branch pipe can be disconnected, and the branch pipe and the rubber plug remain permanently in the pouring cavity, which is convenient and quick.

[0024] Optionally, the casting cavity is provided with vertical ribs, and the vertical ribs are fixed with a plurality of vertically spaced support plates, the upper and lower sides of the support plates respectively abutting against two vertically distributed connecting ribs.

[0025] By adopting the above technical solution, firstly, by setting vertical ribs and support plates, a skeleton structure can be formed inside the casting cavity to enhance the strength of the casting structure; secondly, by the contact between the support plate and the connecting rib tube, the casting structure has extremely strong load-bearing capacity.

[0026] This application also provides a construction method for prefabricated building walls, which adopts the following technical solution:

[0027] A construction method for prefabricated building walls includes the following steps: First, prefabricated wall panels are installed into an installation frame, so that the prefabricated wall panels are arranged side by side. Then, connecting pipes and variable infill steel structure components are inserted together into the perforations to connect the prefabricated wall panels with the installation frame in series. At this time, the ends of the connecting pipes are located between the two side panels. Then, the variable infill steel structure components are adjusted so that they abut against the inner wall of the perforation. The casting auxiliary components are installed at the ends of the connecting pipes to complete the assembly of the main body. The main body is hoisted onto the floor slab, ensuring that the two main bodies are arranged side by side. Then, tie bolts are used to complete the fixed connection of the side panels between the two installation frames. Mortar is injected into the connecting pipes through the casting auxiliary components. The mortar fills the perforations and connecting pipes. Then, concrete is poured into the casting cavity to complete the connection between the main bodies.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By setting up an installation frame, connecting ribs, variable-fill steel structure components, and casting aids, multiple precast wall panels are assembled into the installation frame, and then multiple assembly bodies are cast and connected, which greatly reduces the number of cast-in-place times and shortens the construction cycle; in addition, mortar, variable-fill steel structure components, and connecting ribs are combined to form reinforcements, which further improves the connection strength between precast wall panels.

[0030] 2. By setting up reserved slots, installing vertical plates and embedding reinforcing bars, not only can the connection strength between adjacent precast wall panels be strengthened, but also the cooperation between the embedded reinforcing bars and horizontal bars can make the force transmission of the steel structure more direct, thereby improving the shear resistance of the precast wall panels. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0032] Figure 2 This is a partial sectional view of Example 1, illustrating the connection relationship between the connecting ribs and the precast wall panel.

[0033] Figure 3 This is a schematic diagram of Example 1 illustrating the variable-fill steel structure component in an expanded state.

[0034] Figure 4 This is a top view of Embodiment 1, illustrating the connection between two adjacent assembly bodies.

[0035] Figure 5 This is a schematic diagram of one side of the adjacent assembly body in Embodiment 1.

[0036] Figure 6 This is a schematic diagram of Example 1 illustrating the changing process of the variable-fill steel structure component.

[0037] Figure 7 This is a top view of the prefabricated wall panel of Example 2.

[0038] Figure 8 This is a partial schematic diagram of the connection relationship between adjacent precast wall panels in Example 2.

[0039] Figure 9 This is a partial sectional view of the connection relationship between adjacent precast wall panels in Example 2.

[0040] Figure 10 This is a partial sectional view of the connection relationship between adjacent precast wall panels in Example 3.

[0041] Figure 11 This is a schematic diagram of Embodiment 4 illustrating the connection relationship between the first reinforcing bar and the first mounting vertical plate.

[0042] Figure 12 This is a schematic diagram of Example 4 illustrating the connection between the second reinforcing bar and the second mounting vertical plate.

[0043] Figure 13 This is a schematic diagram of Example 4 illustrating the process of the second reinforcing bar driving the second mounting plate to move downwards.

[0044] Figure 14 This is a schematic diagram of Embodiment 4 illustrating the vertical movement of the first mounting plate and the second mounting plate.

[0045] Figure 15 This is a schematic diagram of Embodiment 5 illustrating the mating relationship between the first guide surface and the second guide surface.

[0046] Figure 16 This is a schematic diagram of Embodiment 5 illustrating the first unidirectional tooth and the second unidirectional tooth.

[0047] Explanation of reference numerals in the attached drawings: 1. Precast wall panel; 2. Installation frame; 3. Connecting reinforcing pipe; 4. Casting auxiliary component; 10. Assembly body; 11. Perforation; 12. Reinforcing cage; 13. Horizontal reinforcement; 131. Installation gap; 15. Reserved groove; 16. Installation vertical plate; 161. First installation vertical plate; 162. Second installation vertical plate; 17. Embedded reinforcing bar; 171. Guide rod; 172. Guide sleeve; 18. Through hole; 181. First through hole; 182. Second through hole; 183. Clamping rod; 20. Casting cavity; 21. Side channel steel; 211 1. Side plate; 212. Tie bolt; 22. Bottom channel steel; 23. Vertical reinforcement; 24. Support plate; 31. Rotating sleeve; 311. Clearance strip hole; 32. First reinforcement bar; 321. Pointed protrusion; 322. Connecting block; 323. First guide surface; 324. First one-way tooth; 33. Second reinforcement bar; 34. Grout outlet hole; 35. Support rod; 36. Convex ring; 361. Second one-way tooth; 362. Inclined surface; 363. Wedge; 37. Second guide surface; 41. Rubber plug; 42. Spring; 43. Branch pipe; 44. Grouting hose. Detailed Implementation

[0048] The following is in conjunction with the appendix Figure 1-16 This application will be described in further detail.

[0049] Embodiment 1 of this application discloses a prefabricated building wall.

[0050] Reference Figure 1 The prefabricated building wall includes multiple prefabricated main bodies 10, which are arranged along the length of the wall to form a large-area whole wall.

[0051] like Figure 1 , Figure 2 As shown, the assembly body 10 includes an installation frame 2, multiple prefabricated wall panels 1 located within the installation frame 2, and at least two vertically arranged connecting ribs 3. The installation frame 2 includes a bottom channel steel 22 and two side channel steels 21. The side channel steels 21 are vertically arranged, and the lower ends of the two side channel steels 21 are fixedly connected to the two ends of the bottom channel steel 22, respectively. The openings of the side channel steels 21 and the bottom channel steel 22 both face the center of the installation frame 2. A first hole (not shown in the figure) is opened at the bottom of the bottom channel steel 22, and a second hole (not shown in the figure) is opened on the side channel steel 21 for the connecting ribs 3 to pass through.

[0052] Each precast wall panel 1 is arranged along the wall surface within the installation frame 2, with the vertical sides of adjacent precast wall panels 1 fitting together, and the sides of the precast wall panels 1 respectively inserted into the grooves of the bottom channel steel 22 and the side channel steel 21.

[0053] At least two through holes 11 are provided in the precast wall panel 1. The through holes 11 are parallel to the bottom channel steel 22. The through holes 11 are arranged vertically at intervals. The through holes 11 of the same assembly body 10 are connected. The through holes 11 correspond to the second hole. Furthermore, the through holes 11 of two adjacent assembly bodies 10 are staggered along the thickness direction of the precast wall panel 1.

[0054] like Figure 2 , Figure 3 As shown, the connecting rib 3 is equipped with a variable filling steel structure assembly, which includes a first reinforcing bar 32 and two rotating sleeves 31. The first reinforcing bar 32 is parallel to the connecting rib 3 and is located directly above the connecting rib 3. The rotating sleeves 31 are rotatably fitted onto the connecting rib 3, and the near ends of the two rotating sleeves 31 are threaded together. The rotating sleeves 31 are provided with a clearance strip hole 311, which is arranged around the circumference of the rotating sleeves 31. The connecting rib 3 is fixed with two support rods 35, which are located in the clearance strip hole 311. The upper end of the support rod 35 is fixedly connected to the first reinforcing bar 32. By setting the clearance strip hole 311, it can be ensured that when the rotating sleeve 31 rotates relative to the connecting rib 3, the rotating sleeve 31 will not interfere with the support rod 35.

[0055] Meanwhile, the connecting tube 3 is also provided with a slurry outlet hole 34, which is connected to the clearance strip hole 311.

[0056] Two rotating sleeves 31 are each fixed with a second reinforcing bar 33. The second reinforcing bar 33 is parallel to the connecting reinforcing bar 3. The diameter of the second reinforcing bar 33 is equal to the diameter of the first reinforcing bar 32. The two second reinforcing bars 33 are located on both sides of the first reinforcing bar 32. The radius of the through hole 11 is equal to the sum of the radius of the rotating sleeve 31 and the diameter of the second reinforcing bar 33.

[0057] like Figure 4 As shown, two side plates 211 are fixed on the outer side of the side channel steel 21. The two side plates 211 are arranged opposite each other along the thickness direction of the precast wall panel 1. The distance between the two side plates 211 gradually decreases along the direction away from the mounting frame 2. The opposite surfaces of the two adjacent mounting frames 2 and the side plates 211 together form a casting cavity 20. After the connecting rib 3 passes through the through hole 11, the end of the connecting rib 3 is located inside the casting cavity 20.

[0058] like Figure 4 , Figure 5 As shown, the pouring cavity 20 is provided with a pouring auxiliary component 4, a vertical bar 23 and a support plate 24. The pouring auxiliary component 4 is used to allow mortar to enter the connecting bar pipe 3, and the mortar will flow through the grout outlet 34 into the perforation 11, thereby strengthening the connection strength between the connecting bar pipe 3 and the precast wall panel 1.

[0059] Specifically, the casting auxiliary component 4 includes two rubber plugs 41, a branch pipe 43, and a grouting hose 44. The rubber plugs 41 are embedded in the end of the connecting rib pipe 3. The rubber plugs 41 have flow channels inside. A spring 42 is fixed to the end of the rubber plug 41 away from the connecting rib pipe 3. When the two assembly bodies 10 are spliced ​​together, the side plates 211 of the two mounting frames 2 are fixed by tie bolts 212, and the spring 42 abuts against the outer side of the mounting frame 2. The elastic force of the spring 42 forces the rubber plugs 41 to be more tightly embedded in the connecting rib pipe 3.

[0060] The branch pipe 43 can be a flexible hose or a metal pipe. The branch pipe 43 has one grout inlet end and two grout outlet ends. The grout outlet end of the branch pipe 43 is connected to the flow channel of the rubber stopper 41. One end of the grouting hose 44 is detachably connected to the grout inlet end of the branch pipe 43. The other end of the grouting hose 44 extends upward to the outside of the pouring cavity 20. This detachable connection can be an elastic interference fit, that is, the end of the grouting hose 44 elastically wraps around the grout inlet end of the branch pipe 43. After the grouting is completed, the grouting hose 44 is pulled forcefully to detach the grouting hose 44 from the branch pipe 43.

[0061] like Figure 5 As shown, the vertical rib 23 is vertically inserted into the casting cavity 20. Multiple support plates 24 are provided. One side of the support plate 24 is welded to the vertical rib 23. Each support plate 24 is arranged vertically at intervals. The upper and lower sides of the support plate 24 respectively abut against two vertically distributed connecting ribs 3. That is, the end positions of the connecting ribs 3, the support plate 24 and the vertical rib 23 can serve as the skeleton of the casting cavity 20 to improve the structural strength of the cast-in-place location.

[0062] Example 1 also discloses a construction method for prefabricated building walls, including the following steps: First, prefabricated wall panels 1 are sequentially installed into the installation frame 2, with the vertical sides of adjacent prefabricated wall panels 1 fitting together, and the sides of the prefabricated wall panels 1 respectively inserted into the grooves of the bottom channel steel 22 and the side channel steel 21. Then, the connecting reinforcing pipe 3 and the variable filling steel structure component first pass through the second hole and then through the through hole 11 to connect each prefabricated wall panel 1 with the installation frame 2 in series.

[0063] Before the connecting rebar 3 is inserted into the through hole 11, the second rebar 33 is located on both sides of the first rebar 32, and both the second rebar 33 and the first rebar 32 are higher than the axis of the connecting rebar 3 (see...). Figure 6 At this point, the maximum outer diameter of the combined structure is smaller than the inner diameter of the perforation 11, making it easier for the combined structure to be inserted into the perforation 11, thereby reducing the difficulty of insertion.

[0064] After the combined structure has completely passed through the perforation 11, the ends of the connecting tube 3 and the rotating sleeve 31 are both located inside the casting cavity 20. The rubber plug 41 is inserted into the end of the connecting tube 3, and then the rotating sleeves 31 on both sides are simultaneously tightened. This causes the two second reinforcing bars 33 to rotate at a certain angle away from the first reinforcing bar 32, so that the second reinforcing bars 33 are lower than the axis of the connecting tube 3 (see...). Figure 6 At this time, the first reinforcing bar 32 and the second reinforcing bar 33 are located on the upper and lower sides of the connecting reinforcing tube 3, respectively. The maximum outer diameter of the combined structure is equal to the inner diameter of the perforation 11, so that the variable filling steel structure component can fill the perforation 11 to reduce the loosening of the prefabricated wall panel 1 and complete the installation of the assembly body 10.

[0065] Then, the assembly body 10 is hoisted to the installation position of the floor slab. The assembly body 10 is initially installed on the floor slab by cooperating with the pre-embedded steel bars of the floor slab and the first hole. The gap between the assembly body 10 and the floor slab is filled with grout to complete the installation. Then, the branch pipe 43 and the grouting hose 44 are installed in sequence.

[0066] After the two adjacent assembly bodies 10 are installed, ensure that the spring 42 is in contact, and then use the tie bolts 212 to complete the fixed connection of the side plates 211 between the two mounting frames 2.

[0067] Grout is injected into the connecting pipe 3 by grouting the grouting hose 44. Then, the grouting outlet 34 of the connecting pipe 3 and the clearance strip hole 311 of the rotating sleeve 31 flow into the perforation 11 to fill the perforation 11. After the grout has solidified, the grouting hose 44 can be pulled out or directly placed into the pouring cavity 20.

[0068] Then, the vertical rib 23 and the support plate 24 are lowered into the casting cavity 20, and the vertical rib 23 is rotated so that the upper and lower sides of the support plate 24 abut against the two vertically distributed connecting ribs 3 respectively.

[0069] Finally, concrete is poured into the casting cavity 20 to complete the connection between the two assembly bodies 10.

[0070] The implementation principle of Example 1 is as follows: First, multiple prefabricated wall panels 1 are assembled into the installation frame 2, and then multiple assembly bodies 10 are cast and connected, which can greatly reduce the number of cast-in-place times and shorten the construction cycle.

[0071] Secondly, by connecting the side plate 211 with tie bolts 212, the side plate 211 can be used as a template, eliminating the need for the template erection step and further shortening the construction cycle.

[0072] Furthermore, by combining the connecting reinforcing tubes 3, the variable filling steel structure components, and mortar to form reinforcements, the connection strength between the precast wall panels 1 is further improved.

[0073] Example 2

[0074] The difference between Example 2 and Example 1 is that, as Figure 7 , Figure 8 As shown, steel cages 12 are embedded on both horizontal sides of the precast wall panel 1, and a vertical through-groove 15 is reserved on the side of the precast wall panel 1. The horizontal bars 13 of the steel cages 12, which are arranged along the thickness direction of the precast wall panel 1, are exposed in the reserved groove 15.

[0075] When the precast wall panel 1 is manufactured, steel cages 12 are placed in the mold on both sides in advance, and then mold strips are placed in the pre-formed reserved grooves 15 on both sides of the mold. The mold strips can be made of foam material. The mold strips are tied and fixed to the horizontal bars 13 of the steel cages 12. Then concrete is poured into the mold. After solidification, the mold is removed and the mold strips are knocked off to expose the reserved grooves 15 and the horizontal bars 13.

[0076] like Figure 9 As shown, a mounting vertical plate 16 is movably connected within the reserved groove 15. In this embodiment, the movable connection is a sliding connection, meaning that the mounting vertical plate 16 can slide relative to the precast wall panel 1 along the direction of the groove opening, either close to or far from the reserved groove 15. The surface of the mounting vertical plate 16 is provided with multiple embedded reinforcing bars 17 arranged along the layout direction of the precast wall panel 1. The mounting vertical plate 16 has a through hole 18, the diameter of which is greater than or equal to the virtual outer diameter enclosed by the first reinforcing bar 32 and the second reinforcing bar 33. That is, the through hole 18 allows the connecting reinforcing tube 3 and the variable filling steel structure component to pass through.

[0077] When adjacent precast wall panels 1 are assembled into the installation frame 2, the installation vertical plate 16 is placed into the reserved groove 15, and then the connecting steel pipe 3 and the variable filling steel structure component are installed. Finally, the installation vertical plate 16 is moved horizontally so that the two opposite installation vertical plates 16 are close to each other, and the post-embedded steel bars 17 on them pass through the gap of the horizontal bars 13 of the steel cages on both sides 12.

[0078] In this way, by using the staggered embedded steel bars 17, not only can the connection strength between adjacent precast wall panels 1 be strengthened, but also the cooperation between the embedded steel bars 17 and the horizontal bars 13 can make the force transmission of the steel structure more direct, thereby improving the shear resistance of the precast wall panels 1.

[0079] Of course, in order to further improve the connection strength between adjacent precast wall panels 1, concrete can be poured in the reserved groove 15 to strengthen the connection. Although this increases the number of pouring times, the construction cycle will not increase much because the reserved groove 15 is small in volume and does not require formwork or steel reinforcement.

[0080] Example 3

[0081] The difference between Example 3 and Example 2 is that, as Figure 10 As shown, an installation gap 131 is formed between two adjacent horizontal reinforcing bars 13. The installation gap 131 is equal to the diameter of the embedded reinforcing bar 17. At the same time, the through hole 18 is a vertical strip hole, which allows the installation vertical plate 16 to move vertically relative to the connecting reinforcing bar 3.

[0082] At least two guide rods 171 are fixed on the outer side of the side channel steel 21. The guide rods 171 are inclined upward. A guide sleeve 172 is fixed on the side of the mounting vertical plate 16. The guide sleeve 172 is slidably sleeved on the guide rod 171, so that the mounting vertical plate 16 can slide upward relative to the side channel steel 21. Then the embedded reinforcing bar 17 is parallel to the guide rod 171.

[0083] When the sides of the two precast wall panels 1 abut against each other, and during the process of the two precast wall panels 1 being lowered into the installation frame 2 (at this time, the lowest point of the installation vertical plate 16 is lower than the precast wall panel 1), the installation vertical plate 16 contacts the bottom of the installation frame 2 one step before the precast wall panel 1. The bottom channel steel 22 provides support and backing for the installation vertical plate 16. Therefore, as the precast wall panel 1 continues to fall into the installation frame 2, the installation vertical plate 16 will move upward relative to the precast wall panel 1. Then, guided by the guide rod 171, the installation vertical plate 16 moves upward at an angle relative to the precast wall panel 1. The embedded steel bar 17 then moves upward at an angle through the installation gap 131, thus completing the connection between the adjacent precast wall panels 1.

[0084] Example 4

[0085] The difference between Example 4 and Example 2 is that, as Figure 11 , Figure 12 As shown, one of the two opposing mounting vertical plates 16 is designated as the first mounting vertical plate 161, and the other is designated as the second mounting vertical plate 162. The through hole 18 on the first mounting vertical plate 161 is designated as the first through hole 181, and the through hole 18 on the second mounting vertical plate 162 is designated as the second through hole 182. The first through hole 181 is a vertically arranged strip hole, and the inner top wall of the first through hole 181 abuts against the top surface of the first reinforcing bar 32. The second through hole 182 is a vertically arranged strip hole, and two clamping rods 183 are vertically fixed to the vertical side wall of the second through hole 182. The two clamping rods 183 are located on the upper and lower sides of the second reinforcing bar 33, respectively.

[0086] like Figure 13 , Figure 14As shown, the precast wall panel 1 is located inside the installation frame 2, and after the connecting reinforcing tube 3 is installed, the rotating sleeve 31 is tightened to rotate the second reinforcing bar 33. During this process, the second reinforcing bar 33 rotates and moves downward. Through the cooperation between the second reinforcing bar 33 and the clamping rod 183, the displacement of the second reinforcing bar 33 drives the clamping rod 183 to move downward, thereby driving the second installation vertical plate 162 to move downward. When the second reinforcing bar 33 moves below the axis of the connecting reinforcing tube 3 as the rotating sleeve 31 rotates, the embedded reinforcing bar 17 on the second installation vertical plate 162 presses down on the horizontal reinforcing bar 13.

[0087] As the second reinforcing bar 33 moves downward, it supports the connecting reinforcing tube 3 and the first reinforcing bar 32. The first reinforcing bar 32 then moves the first mounting vertical plate 161 upward, causing the embedded reinforcing bars 17 on the first mounting vertical plate 161 to push against the horizontal reinforcing bars 13. In this way, the embedded reinforcing bars 17 on both sides jointly clamp the horizontal reinforcing bars 13 on the two precast wall panels 1, so as to connect the horizontal reinforcing bars 13 on the two precast wall panels 1, thereby improving the connection strength between the precast wall panels 1.

[0088] Example 5

[0089] Example 5 is based on Example 4 with the following settings, such as... Figure 15 , Figure 16 As shown, the support rod 35 of the first reinforcing bar 32 passes through the connecting reinforcing tube 3, so that the support rod 35 can slide vertically relative to the connecting reinforcing tube 3, and the top of the first reinforcing bar 32 is fixed with multiple pointed protrusions 321.

[0090] A connecting block 322 is fixed at the middle position of the bottom of the first reinforcing bar 32. Both ends of the connecting block 322 along the axial direction of the first reinforcing bar 32 are provided with a first guide surface 323. The outer peripheral surface of the rotating sleeve 31 has a protruding ring 36. The protruding ring 36 is provided with a second guide surface 37. The first guide surface 323 is provided with a plurality of first one-way teeth 324. The second guide surface 37 is provided with a plurality of second one-way teeth 361. The first one-way teeth 324 and the second one-way teeth 361 are both provided with a chamfer 362 and a wedge 363.

[0091] When the connecting tube 3 is installed and it is necessary to control the vertical movement of the first mounting plate 161 and the second mounting plate 162, first tighten the rotating sleeve 31 (the rotating sleeve 31 drives the second reinforcing bar 33 to move downward to control the vertical movement of the first mounting plate 161 and the second mounting plate 162). At this time, due to the threaded connection, the two rotating sleeves 31 will approach each other along the axial direction of the connecting tube 3. At this time, the second guide surface 37 and the first guide surface 323 will come into contact and force the first reinforcing bar 32 to move upward. The approaching contact force will, through the cooperation of the second guide surface 37 and the first guide surface 323, cause the first reinforcing bar 32 to move upward a small distance, so as to force the pointed protrusion 321 of the first reinforcing bar 32 to further penetrate into the inner wall of the perforation 11, so as to strengthen the connection between the first reinforcing bar 32 and the precast wall panel 1.

[0092] Furthermore, during the tightening process of the rotating sleeve 31, the inclined surfaces 362 of the second one-way tooth 361 and the first one-way tooth 324 move away from each other, thus not affecting the tightening action of the rotating sleeve 31. When the rotating sleeve 31 is loosened, the wedges 363 of the second one-way tooth 361 and the wedges 363 of the first one-way tooth 324 will mesh with each other, that is, the first one-way tooth 324 and the second one-way tooth 361 maintain meshing with each other along the loosening direction of the rotating sleeve 31. This biting force will prevent the action of the rotating sleeve 31 during loosening. Therefore, this biting force will prevent the second reinforcing bar 33 from reversing due to the reaction force of the inner wall of the perforation 11, and prevent the first mounting vertical plate 161 and the second mounting vertical plate 162 from reversing due to the rebound force when the rear-embedded reinforcing bar 17 is clamped with the horizontal bar 13. That is, by setting the one-way biting structure, the stability of the clamping effect of the rear-embedded reinforcing bar 17 and the filling stability of the variable filling steel structure component can be maintained.

[0093] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fabricated building wall, characterized by: The assembly includes multiple assembly bodies (10), each assembly body (10) including an installation frame (2), multiple precast wall panels (1) located within the installation frame (2), and at least two vertically arranged connecting ribs (3). The sides of two adjacent precast wall panels (1) are attached to each other. The precast wall panels (1) have through holes (11) for the connecting ribs (3) to pass through horizontally. The connecting ribs (3) of two adjacent assembly bodies (10) are staggered along the thickness direction of the precast wall panels (1). The pipe (3) is provided with a variable filling steel structure assembly for abutting against the inner wall of the perforation (11), and the connecting rib pipe (3) is provided with a grout outlet (34) located in the perforation (11); the outer side of the mounting frame (2) is fixed with two side plates (211) arranged opposite to each other along the thickness direction of the precast wall panel (1), the distance between the two side plates (211) gradually decreases along the direction away from the mounting frame (2), and the opposite surfaces of two adjacent mounting frames (2) and the side plates (211) together form a casting cavity (20), so The end of the connecting rib (3) is located inside the casting cavity (20); the end of the connecting rib (3) is provided with a casting auxiliary component (4), which is used to allow mortar to enter the connecting rib (3); the side plates (211) between the two mounting frames (2) are fixedly connected by tie bolts (212); the variable filling steel structure assembly includes a first reinforcing bar (32) and two rotating sleeves (31), the first reinforcing bar (32) being parallel to the connecting rib (3), the first reinforcing bar (32) The rotating sleeve (31) is rotatably sleeved with the connecting tube (3) and connected to the top of the connecting tube (3). The two rotating sleeves (31) are threaded together at their near ends. Each of the two rotating sleeves (31) is fixed with a second steel bar (33). The diameter of the second steel bar (33) is equal to the diameter of the first steel bar (32). The two second steel bars (33) are located on both sides of the first steel bar (32). The radius of the through hole (11) is equal to the sum of the radius of the rotating sleeve (31) and the diameter of the second steel bar (33).

2. The fabricated building wall of claim 1, wherein: The precast wall panel (1) has steel cages (12) embedded on both horizontal sides. The side of the precast wall panel (1) has a reserved groove (15) that is vertically through. The horizontal bars (13) of the steel cage (12) arranged along the thickness direction of the precast wall panel (1) are exposed in the reserved groove (15). The reserved groove (15) is movably connected to the mounting plate (16). The surface of the mounting plate (16) is provided with multiple post-embedded steel bars (17) arranged along the arrangement direction of the precast wall panel (1). The post-embedded steel bars (17) are used to extend into the gap of the horizontal bars (13) of the steel cage (12).

3. The fabricated building wall of claim 2, wherein: One of the two opposing mounting vertical plates (16) is a first mounting vertical plate (161), and the other is a second mounting vertical plate (162). The first mounting vertical plate (161) has a first through hole (181) through which the rotating sleeve (31) passes. The first through hole (181) is a vertically oriented strip hole, and the inner top wall of the first through hole (181) abuts against the top surface of the first reinforcing bar (32). The second mounting vertical plate (162) has a second through hole (182) through which the rotating sleeve (31) passes. The second through hole (182) is a vertically oriented strip hole. Two clamping rods (183) are vertically fixed to the vertical sidewall of the two through holes (182). The two clamping rods (183) are located on the upper and lower sides of the second reinforcing bar (33), respectively. When the second reinforcing bar (33) moves below the axis of the connecting reinforcing tube (3) as the rotating sleeve (31) rotates, the rotating sleeve (31) drives the first mounting vertical plate (161) to move upward, and the second reinforcing bar (33) drives the second mounting vertical plate (162) to move downward. The embedded reinforcing bars (17) on the first mounting vertical plate (161) and the second mounting vertical plate (162) are vertically clamped to the horizontal reinforcing bar (13) of the reinforcing cage (12).

4. The fabricated building wall of claim 3, wherein: The top of the first reinforcing bar (32) is fixed with a pointed protrusion (321) for insertion into the inner wall of the perforation (11).

5. The fabricated building wall of claim 3 or 4, wherein: At least two support rods (35) are vertically fixed at the bottom of the first reinforcing bar (32), and the support rods (35) are vertically slidably connected to the connecting reinforcing tube (3); a connecting block (322) is fixed at the middle position of the bottom of the first reinforcing bar (32), and the two ends of the connecting block (322) along the axial direction of the first reinforcing bar (32) are provided with a first guide surface (323). The outer peripheral surface of the rotating sleeve (31) has a protruding ring (36), and the protruding ring (36) is provided with a second guide surface (37). When the rotating sleeve (31) rotates, the two rotating sleeves (31) approach each other, and the second guide surface (37) and the first guide surface (323) are attached and merged to force the first reinforcing bar (32) to move upward. The first guide surface (323) is provided with a plurality of first one-way teeth (324), and the second guide surface (37) is provided with a plurality of second one-way teeth (361). The first one-way teeth (324) and the second one-way teeth (361) disengage from each other along the tightening direction of the rotating sleeve (31), and the first one-way teeth (324) and the second one-way teeth (361) remain engaged with each other along the loosening direction of the rotating sleeve (31).

6. The fabricated building wall of claim 2, wherein: An installation gap (131) is formed between two adjacent horizontal reinforcing bars (13). At least two inclined upward guide rods (171) are fixed on the outer side of the mounting frame (2). A guide sleeve (172) is fixed on the side of the mounting vertical plate (16). The guide sleeve (172) is slidably sleeved on the guide rod (171). The embedded reinforcing bar (17) is parallel to the guide rod (171). When the mounting vertical plate (16) moves along the direction of the guide rod (171), the embedded reinforcing bar (17) is inserted into the installation gap (131) of the horizontal reinforcing bars (13) of two adjacent reinforcing cages (12) one after another.

7. The prefabricated building wall according to claim 1, characterized in that: The casting auxiliary component (4) includes two rubber plugs (41), a branch pipe (43), and a grouting hose (44). The rubber plug (41) is embedded in the end of the connecting rib pipe (3). The end of the rubber plug (41) away from the connecting rib pipe (3) is provided with a spring (42) for abutting against the outer side of the mounting frame (2). The grout outlet end of the branch pipe (43) is connected through the rubber plug (41). One end of the grouting hose (44) is detachably connected to the grout inlet end of the branch pipe (43).

8. The prefabricated building wall according to claim 1, characterized in that: The casting cavity (20) is provided with vertical ribs (23), and the vertical ribs (23) are fixed with multiple vertically spaced support plates (24). The upper and lower sides of the support plates (24) respectively abut against two vertically distributed connecting ribs (3).

9. A construction method for prefabricated building walls according to claim 1, characterized in that: Includes the following steps: First, the precast wall panels (1) are installed into the installation frame (2) so that the precast wall panels (1) are arranged side by side. Then, the connecting pipe (3) and the variable filling steel structure component are inserted together into the perforation (11) to connect the precast wall panels (1) and the installation frame (2) in series. At this time, the end of the connecting pipe (3) is located between the two side plates (211). Then, the variable filling steel structure component is adjusted so that the variable filling steel structure component abuts against the inner wall of the perforation (11). The casting auxiliary component (4) is installed on the connecting pipe (3). The end of the assembly body (10) is used to complete the assembly of the main body (10); the assembly body (10) is hoisted onto the floor slab to ensure that the two assembly bodies (10) are side by side, and then the tie bolts (212) are used to complete the fixed connection of the side plate (211) between the two mounting frames (2); mortar is injected into the connecting tube (3) through the pouring auxiliary component (4), the mortar fills the perforation (11) and the connecting tube (3), and then concrete is poured into the pouring cavity (20) to complete the connection between the assembly bodies (10).

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