Prefabricated basement exterior wall connection structure

Abstract

The invention relates to the technical field of building equipment, and discloses a prefabricated basement exterior wall connection structure, comprising a foundation slab and a prefabricated wall panel, including a foundation slab; at least two vertical prefabricated wall panels are placed on the upper part of the foundation slab, and the interior of the prefabricated wall panel is designed with transverse steel bars arranged in parallel up and down and horizontally penetrating the wall body along the wall surface direction, and the part of the transverse steel bar extending out of the side of the prefabricated wall panel is designed with a bent hook end; the side of the prefabricated wall panel is processed with a vertical side groove, and a vertical expansion water stop strip is attached to the middle of the concave part of the side groove; concrete is poured in the placement groove to wrap the lower part of the prefabricated wall panel; the concrete poured in the pouring section completely wraps the hook end and the expansion water stop strip extending out of the wall; the invention solves the problems of slow existing wall construction speed, connection problems between prefabricated components and low efficiency of existing cement pouring.

Description

Technical Field

[0001] The invention relates to the technical field of building equipment, in particular to a prefabricated basement exterior wall connection structure. Background Art

[0002] Prefabricated components, such as prefabricated exterior wall panels, have been widely used in the field of modern construction, especially in prefabricated construction. After the production of the project is completed, the prefabricated exterior wall panels are transported to the construction site for assembly. This method can significantly shorten the construction period, improve work efficiency, and reduce costs. At the same time, prefabricated exterior wall panels also have the advantages of controllable quality and convenient construction, which makes them more and more used in structures such as basement exterior walls.

[0003] The existing technology faces the following problems: the formwork support is not firm or is not firmly fixed, which will cause displacement or tilt problems during the concrete pouring process, easily affecting the verticality and flatness of the wall; and the connection between the prefabricated components is the weak link of the structure, and its connection strength may be affected by many factors, such as connection method, connection material, construction quality, etc. If the connection strength is insufficient, it may cause the exterior wall to be damaged or fail when subjected to external force.

[0004] In prefabricated structures, the most difficult to achieve is the prefabricated connection of the basement, because the basement is below the ground and in direct contact with the soil layer. The outer layer of the basement needs to withstand the lateral pressure brought by the soil and the invasion of moisture in the soil, and the prefabricated components need to be formed into plates for re-casting and connection; this makes the connection position have higher connection requirements than the traditional connection structure. The traditional casting prefabrication connection method cannot meet the requirements; in addition, when the vertical wall is connected by pouring concrete, bubbles are easily formed in the casting cavity because the vertical surface of the wall is poured too high. It is difficult to completely eliminate the bubbles in the casting cavity that is too high using a vibrator. Summary of the invention

[0005] (I) Technical problems to be solved: In view of the deficiencies of the prior art, the present invention provides a prefabricated basement exterior wall connection structure, which has the advantages of being able to enhance the connection strength while stably supporting the prefabricated wall panels, and is convenient for the operation of post-poured concrete. At the same time, it can reduce and prevent the generation of bubbles in the poured concrete during pouring.

[0006] (II) Technical solution: To solve the above technical problems, the present invention provides the following technical solution: a prefabricated basement exterior wall connection structure, comprising a foundation slab; at least two vertical prefabricated wall panels are placed on the upper portion of the foundation slab, and a vertical casting section is designed between the two prefabricated wall panels constituting the same wall, and concrete is cast in the casting section for connection.

[0007] The foundation bottom plate is designed with a horizontal placement groove, and two prefabricated wall panels on the same wall are placed in the same placement groove. The bottom of the prefabricated wall panel is placed in the placement groove through a height-adjusting pad, and a horizontal expansion water stop strip is placed on the side of the height-adjusting pad.

[0008] The prefabricated wall panels are designed with transverse steel bars arranged in parallel up and down and running through the wall horizontally along the wall surface direction. The transverse steel bars extending out of the side of the prefabricated wall panels are designed with bent hook ends. The hook ends extending out of the sides to be cast of the two prefabricated wall panels are arranged in an alternating manner up and down in the casting section. Concrete is cast in the placement groove to wrap the lower part of the prefabricated wall panels.

[0009] Preferably, the side of the prefabricated wall panel is processed with a vertical side groove, a vertical expansion water stop strip is attached to the middle of the concave part of the side groove, the side groove is a trapezoidal groove, the upper bottom of the trapezoidal cross section of the side groove is sunken into the wall, and the angle between the waistline on both sides of the trapezoidal cross section of the side groove and the upper bottom is an obtuse angle. The concrete poured in the pouring section completely wraps the hook end and the expansion water stop strip extending out of the wall.

[0010] Preferably, the side edges of the side grooves are processed with vertical waterstop plates whose parts of the panels are pre-embedded in the prefabricated wall panels, and the outer sides of the waterstop plates extend out of the sides of the prefabricated wall panels. The waterstop plates are made of steel plates or rubber materials.

[0011] Preferably, the walls of the basement are connected by cast-in-place pilasters; the concrete cast in the pilasters wraps around the prefabricated wall panels through the laterally extended hook ends; the basement is provided with prepared columns corresponding to the pilasters, and the upper parts of the pilasters and the prepared columns are respectively provided with extended steel bar ends, and prefabricated cross beams are cast and connected between the pilasters and the prepared columns and the upper parts of two adjacent prepared columns through the extended steel bar ends, and transverse steel bars for casting and connection are extended at both ends of the prefabricated cross beams; the upper part of the prefabricated cross beams is designed with n-shaped extended beam top steel bars, and the top of the basement adopts a prefabricated top plate, and steel bar ends are extended on both sides of the prefabricated top plate, and the prefabricated top plate is cast and connected to the n-shaped beam top steel bars on the upper part of the prefabricated cross beam through the steel bar ends extended on both sides.

[0012] Preferably, the prefabricated wall panel is also designed with transversely arranged vertical steel bars, and the transversely and vertically arranged steel bars form a mesh structure within the wall. The prefabricated wall panel is designed with front and rear mesh steel bars, and the front and rear mesh steel bars extend to the sides of the prefabricated wall panel with their hooks facing inward.

[0013] Preferably, the cross-section of the placement groove is a trapezoidal groove structure that is wide at the top and narrow at the bottom.

[0014] Preferably, the outer side of the prefabricated wall panel is designed with oblique wall support rods.

[0015] Preferably, a vertical fixed casting plate is fixed on one side of the casting section of the two prefabricated wall panels to be cast, and a lifting module and a movable casting plate are provided on the other side of the casting section. The telescopic end of the lifting module is vertically upward, and the movable casting plate includes two or more horizontal plates made of rigid materials, and the horizontal plates are connected by connecting strips of flexible materials. The lifting module forms a continuously rising casting space between the two prefabricated wall panels by continuously lifting the movable casting plate.

[0016] During pouring, cement is poured from the upper side of the movable pouring plate into the pouring section. When the cement is poured to the flush position of the movable pouring plate, the movable pouring plate is lifted to continue pouring cement in the newly formed upper pouring space.

[0017] Preferably, the bottom of the movable casting plate is fixed on the foundation bottom plate, the telescopic end of the upper part of the lifting module is equipped with a top roller, the movable casting plate hangs backward around the top roller, the lifting module adopts a multi-stage lifting structure, and a top rod is designed at the bottom of the lifting rod of each stage of the lifting module, and the number of cross plates of the movable casting plate corresponds to the number of the top rods.

[0018] The top rollers are lifted upwards one by one, and cement is poured into the pouring section from the upper side of the movable pouring plate once each time the top rollers are lifted upwards, and at the same time, the corresponding top rods are pressed tightly against the transverse plate.

[0019] Preferably, a support rod is hinged to the rear of the top roller or top rod, and the bottom of the support rod is tilted and pressed against the ground.

[0020] Preferably, a lifting base is designed at the bottom of the lifting module, a feeding cavity is designed to penetrate through the middle of the lifting base, and a steering roller is installed at the feeding cavity near the bottom of the casting section; the number of transverse plates of the movable casting plate is greater than 10, and the movable casting plate is rolled up on a material roller assembled by self-rotation, and vertical ribs are designed at positions corresponding to both sides of the movable casting plate for two prefabricated wall panels to be cast; the movable casting plate on the material roller passes through the lifting base from the outside and extends vertically upward through the steering roller, and the outer side of the upper end of the movable casting plate extending vertically upward is fixedly connected to the vertical upward end of the movable casting plate, and the rib presses the movable casting plate extending vertically upward through the steering roller onto the prefabricated wall panel.

[0021] When the top roller is lifted upward, the movable casting plate is always attached to the prefabricated wall panels on both sides by the compression of the retaining edge.

[0022] Preferably, the retaining edge uses a vertical rigid plate, and a vertical sliding groove is processed on one side of the retaining edge corresponding to the movable casting plate; a transverse connecting rod is fixed to the upper part of the lifting module top rod, and the two ends of the connecting rod are symmetrically fixedly connected to the upward end of the movable casting plate.

[0023] (III) Beneficial effects: Compared with the prior art, the present invention provides a prefabricated basement exterior wall connection structure, which has the following beneficial effects:

[0024] 1. This prefabricated basement exterior wall connection structure achieves a rapid increase in construction speed through a combination of direct splicing between prefabricated wall panels and ground bottom plates and splicing of reserved post-casting sections. In the pilaster part, concrete is cast in place to enhance its load-bearing capacity and firmness. In this connection structure, two prefabricated wall panels to be cast and connected are cast and connected by hooking ends that extend horizontally out of the bent wall body; the hooking ends extending from the side sections to be cast of the two prefabricated wall panels are arranged in an up-and-down staggered manner, so that the casting section forms a firm tightening section, which firmly tightens the prefabricated wall panels on both sides, greatly reducing the possibility of cracking. The design of the height-adjusting pad at the bottom of the prefabricated wall panel not only effectively ensures the height of the prefabricated wall panel during casting, but also ensures the flatness of the upper part of the entire wall section after casting; at the same time, the structural design of the placement groove and the height-adjusting pad allows the bottom of the prefabricated wall panel to be completely wrapped by the poured cement. This embedded full-wrapped structure ensures the integrity of the wall and the ground.

[0025] 2. The side of the prefabricated wall panel is designed with a concave side groove, which increases the fitting surface during pouring, so that the fitting surface can withstand greater shear force. The expansion water stop strip designed in the side groove further strengthens the internal and external sealing of the basement wall after pouring; at the same time, when the expansion water stop strip expands when it encounters water during pouring, it can effectively compensate for the shrinkage of concrete during pouring. Furthermore, the trapezoidal design of the side groove allows the cement pushed outward by the expansion water stop strip to achieve expansion compensation at a wider angle to the pouring section, and the compensation effect is more balanced, further improving the quality parameters of the concrete section after pouring.

[0026] 3. Through the casting design of pilasters, preparatory columns, prefabricated beams and prefabricated top plates, the entire basement is connected as a whole; the casting between the pilasters, preparatory columns and prefabricated beams is directly cast through the steel bars at the ends, which can effectively ensure the integrity of the basement connection. During the casting process, the prefabricated beams and prefabricated top plates are both prefabricated components, which not only speeds up the casting process, but also makes the steel bar positions of the prefabricated components more precise, so the mechanical effect is better. The n-shaped top steel bar design on the upper part of the prefabricated beams makes the casting of the prefabricated beams and prefabricated top plates more secure. Furthermore, the stepped design of the prefabricated wall panels not only has more casting surfaces, but also has no direct vertical single fitting surface after casting, which has a better casting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional installation structure of the prefabricated wall panels and the foundation slab before casting of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the cross section of the prefabricated wall panel and the foundation bottom plate after casting.

[0029] Figure 3 It is a schematic diagram of the cross section of the wall in the top view after the middle of two prefabricated wall panels of the present invention are cast.

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the prefabricated wall panels and pilasters after casting of the present invention.

[0031] Figure 5 This is a schematic diagram of the three-dimensional structure before the precast beams and precast top slabs are cast.

[0032] Figure 6 Schematic diagram of the cross section after pouring of the precast columns, precast beams and precast top slabs.

[0033] Figure 7 This is a schematic diagram of the three-dimensional structure of a prefabricated wall panel and a foundation slab during casting in accordance with a first embodiment of the present invention.

[0034] Figure 8 This is a structural schematic diagram of the first embodiment of the present invention when the movable casting plate is not installed.

[0035] Fig. 9 It is a structural schematic diagram of the front direction of the first embodiment of the present invention during casting.

[0036] Fig.10 This is a partial enlarged structural schematic diagram of a lifting module in the first embodiment of the pouring method of the present invention.

[0037] Fig.11 This is a side structural schematic diagram of the lifting module and prefabricated wall panels during casting in Embodiment 2 of the present invention.

[0038] Fig.12 This is a schematic diagram of the top view of the structure of the lifting module and the prefabricated wall panel during casting in Embodiment 2 of the present invention.

[0039] Fig.13 It is a schematic diagram of the structure of the movable casting plate used in the present invention.

[0040] Fig.14 It is a schematic diagram of the pouring cross section of waterproofing using a water stop plate structure between two prefabricated wall panels of the present invention.

[0041] In the figure:

[0042] 1. Basic bottom plate, 11. Placement slot, 12. Height adjustment pad;

[0043] 2. Prefabricated wall panel, 20. Casting section, 21. Hooking end, 22. Side groove, 23. Fixed casting plate, 24. Side retaining edge;

[0044] 3. Expansion water stop strip, 3a. Water stop plate;

[0045] 4, pilasters, 41, preparatory columns;

[0046] 5. Prefabricated beams, 51. Beam top reinforcement;

[0047] 6. Prefabricated top plate;

[0048] 7. Lifting module, 70. Lifting base, 701. Feeding chamber, 702. Turning roller, 71. Top roller, 72. Top rod, 721. Connecting rod, 73. Support rod;

[0049] 8. Movable casting plate, 80. Material roller, 81. Cross plate, 82. Connecting strip. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] The basement described in the present invention mainly refers to a separate basement structure, such as an underground garage in a residential area. The prefabricated basement exterior wall connection structure is mainly used to complete the connection construction of the corresponding basement exterior wall. Figure 1 As shown, the connection structure includes a foundation slab 1, which can be a prefabricated ground slab or a cast-in-place slab structure according to the specific construction structure. At least two vertical prefabricated wall panels 2 are placed on the top of the foundation slab 1, and a vertical casting section 20 is designed between the two prefabricated wall panels 2 constituting the same wall, and the casting section 20 is cast with concrete for connection. The use of a block-shaped prefabricated wall structure for further casting connection not only makes the overall structure take shape faster, but also uses less concrete when casting on site, which not only ensures its load-bearing capacity and firmness, but also simplifies the construction process and shortens the construction period.

[0052] In this embodiment, if Figure 1 and Figure 2As shown, the foundation slab 1 is designed with a horizontal placement groove 11, which is designed as a horizontal straight line and can be directly designed on the prefabricated slab as needed, or can be directly cast at the construction site of the basement. Before the prefabricated wall panels 2 are cast and connected, the two prefabricated wall panels 2 on the same wall are placed in the same placement groove 11; specifically, the bottom of the prefabricated wall panel 2 is placed in the placement groove 11 through a height adjustment pad 12, and a horizontal expansion water stop strip 3 is placed on the side of the height adjustment pad 12. By designing a height-adjusting pad 12 at the bottom of the prefabricated wall panel 2, not only the height of the prefabricated wall panel 2 during pouring can be effectively guaranteed, but also the flatness of the upper part of the entire wall section after pouring is guaranteed; at the same time, the structural design of the placement groove 11 and the height-adjusting pad 12 allows the bottom of the prefabricated wall panel 2 to be completely wrapped by the poured cement, and this embedded full-wrapped structure ensures the integrity of the wall and the ground; in the specific design, the cross-section of the placement groove 11 is a trapezoidal groove structure that is wide at the top and narrow at the bottom, which is convenient for the placement of the prefabricated wall panel 2.

[0053] like Figure 1 and Figure 3 As shown, the internal steel bar structure of the prefabricated wall panel 2 is similar to that of a traditional concrete wall, and is designed with transverse steel bars arranged in parallel up and down. In this structure, the transverse steel bars in the prefabricated wall panel 2 run horizontally along the wall surface direction, and at the same time, the transverse steel bars extending from the side of the prefabricated wall panel 2 are designed with bent hook ends 21, and the hook ends 21 extending from the sides to be cast of the two prefabricated wall panels 2 are arranged in an up-and-down staggered manner in the casting section 20. The hook ends 21 extending from the side sections 20 to be cast of the two prefabricated wall panels 2 are arranged in an up-and-down staggered manner, so that the adjacent hook ends 21 near the ends of the two prefabricated wall panels 2 can form a tightening section with a larger cross-section in the middle, so that after casting in the casting section 20, the tension strength along the transverse steel bars is greater, and the prefabricated wall panels 2 on both sides can be firmly tightened, greatly reducing the possibility of cracking.

[0054] In the specific design, such as Figure 3As shown, the side of the prefabricated wall panel 2 is processed with a vertical side groove 22, so that when pouring concrete, the concrete can directly enter the side groove 22, which not only increases the bonding surface during pouring, but also forms a staggered fastening structure between the bonding surface of the prefabricated wall panel 2 and the concrete after the concrete solidifies, so that the casting bonding surface can withstand greater shear force. At the same time, a vertical expansion water stop strip 3 is attached to the middle of the concave part of the side groove 22. The expansion water stop strip 3 is made of water-absorbing and expanding material. In this way, when pouring concrete, the moisture in the concrete can make the expansion water stop strip 3 absorb water and expand, thereby forming a vertical sealing strip between the side of the prefabricated wall panel 2 and the concrete pouring surface. The expansion water stop strip 3 further strengthens the internal and external sealing of the basement wall after pouring. In the specific design, the side groove 22 is a trapezoidal groove. The upper bottom of the trapezoidal cross-section of the side groove 22 is sunken into the wall, and the angles between the waistlines on both sides of the trapezoidal cross-section of the side groove 22 and the upper bottom are obtuse angles, so that the cement pushed outward after the expansion water stop strip 3 expands can be directed toward the casting section 20 at a wider angle to achieve expansion compensation, and the compensation effect is more balanced, further improving the quality parameters of the concrete section after casting.

[0055] During the specific pouring process of the placement groove 11 and the pouring section 20, the concrete poured in the placement groove 11 wraps the lower part of the prefabricated wall panel; the concrete poured in the pouring section 20 completely wraps the hooking end 21 extending out of the wall and the expansion water stop strip 3, thereby ensuring the stability of the connection between the prefabricated wall panel 2 and the placement groove 11.

[0056] In specific design, the water stop structure between the two prefabricated wall panels 2 can also use a water stop plate 3a structure. Fig.14 As shown, the side of the side groove 22 is processed with a vertical water stop plate 3a whose part of the plate surface is pre-embedded in the prefabricated wall panel 2. The water stop plate 3a is made of steel plate or rubber material. The outer side of the water stop plate 3a extends out of the side of the prefabricated wall panel 2, so that after the prefabricated wall panels 2 are connected by the casting section, the water stop plate 3a can also play a connecting role. If a steel plate is used, the entire wall structure can be further strengthened. At the same time, the design of the water stop plate 3a is directly embedded in the prefabricated wall panel 2 and the casting space, which can effectively prevent water and moisture.

[0057] In this basement connection structure, the specific implementation is as follows Figure 4As shown, the wall surfaces of the basement exterior wall are connected to each other through cast-in-place pilasters 4; the concrete of the cast pilasters 4 wraps the prefabricated wall panels 2 through the laterally extended hooking ends 21. The hooking ends 21 of this part have the same effect as the hooking ends 21 in the casting section 20. The overall thickness of the pilasters 4 is wider and the strength is greater. The cast connection of the pilasters 4 and the prefabricated wall panels 2 can make the structure of the basement wall more solid. According to the specific requirements of the basement structure, part of the basement wall can also be completed by casting.

[0058] When the designed basement structure is larger, such as some parking lots attached to the lower part of a building, the basement is designed with a preparatory column 41 corresponding to the pilaster 4. The preparatory column 41 is similar in structure to the pilaster 4, but is used as a separate support for the column. The preparatory column 41 structure can use a prefabricated column structure, or it can be cast in situ according to the usage scenario. In the specific design, the upper parts of the pilaster 4 and the preparatory column 41 are respectively designed with protruding steel bar ends, and the pilaster 4, the preparatory column 41 and the upper parts of the two adjacent preparatory columns 41 are respectively connected by casting with prefabricated cross beams 5 through the protruding steel bar ends. Both ends of the prefabricated cross beams 5 extend with transverse steel bars for casting connection. Figure 5 and Figure 6 As shown, the upper part of the prefabricated cross beam 5 is designed with an n-shaped protruding beam top steel bar 51. In this basement connection structure, the top of the basement is cast and connected with a prefabricated top plate 6. In the specific design, the prefabricated top plate 6 has steel bar ends protruding from both sides, and the prefabricated top plate is cast and connected with the n-shaped beam top steel bar 51 of the upper part of the prefabricated cross beam through the steel bar ends protruding from both sides.

[0059] In specific implementation, the prefabricated top plate 6 is designed to be stepped, and each layer of the stepped prefabricated top plate 6 is designed with a steel bar end extending above the prefabricated cross beam 5; the steel bar end extending from the prefabricated top plate 6 is bent downward. The prefabricated top plate 6 can be directly cast on the upper part of two walls, or directly cast on the upper part of two prefabricated cross beams 5, or cast on the upper part of a prefabricated cross beam 5 and a wall.

[0060] In the basement structure, its side wall structure can be constructed by using the connection structure of the above-mentioned basement exterior wall. At the same time, through the casting design of the pilasters 4, the prefabricated columns 41, the prefabricated beams 5 and the prefabricated top plate 6, the entire basement is connected as a whole; the casting between the pilasters 4, the prefabricated columns 41 and the prefabricated beams 5 is directly cast through the steel bars at the end, which can effectively ensure the integrity of the basement connection. In the casting process, the prefabricated beams 5 and the prefabricated top plate 6 are both prefabricated components, which not only makes the casting process faster, but also makes the steel bar position of the prefabricated components more accurate, so the mechanical effect is better. The n-shaped top steel bar 51 on the upper part of the prefabricated beam 5 makes the casting of the prefabricated beam 5 and the prefabricated top plate 6 more firm. Further, the stepped design of the prefabricated wall panel can not only have more casting surfaces, but also make it so that there is no direct vertical single fitting surface after casting, and the casting effect is better.

[0061] like Figure 1 , Figure 2 and Figure 3 As shown, the prefabricated wall panel 2 is also designed with transversely arranged vertical steel bars. The transversely and vertically arranged steel bars form a mesh structure in the wall. The prefabricated wall panel 2 is designed with mesh steel bars on the front and back sides. The double-layer steel mesh structure makes the structure of the prefabricated wall panel more solid. At the same time, in the specific design, the hook-shaped directions of the hook-tightening ends 21 of the front and back mesh steel bars extending to the sides of the prefabricated wall panel 2 are respectively facing inward. The positions of the two mesh steel bars extending from the hook-tightening ends 21 in the prefabricated wall panel 2 are symmetrical to each other, and the force is balanced after pouring.

[0062] In the prefabricated basement exterior wall connection structure, the entire pouring section 20 is in a vertical strip shape due to the high wall. At the same time, the hooking end 21 of the side of the prefabricated wall panel 2 extending outward makes it difficult for the cement in the pouring section 20 to fall directly from the upper part to the lower part. The high wall and the staggered steel bar structure cannot effectively vibrate the concrete using a vibrating rod. In view of the above problems, this patent provides two pouring methods.

[0063] In the first pouring implementation method,

[0064] like Figure 7 As shown, a vertical fixed casting plate 23 is fixed on one side of the casting section of the two prefabricated wall panels 2 to be cast, so that one side of the casting section 20 is limited. A lifting module 7 and a movable casting plate 8 are arranged on the other side of the casting section 20, and the telescopic end of the lifting module 7 is vertically upward. Fig.13As shown, the movable casting plate 8 includes two or more horizontal plates 81 made of rigid materials, and the horizontal plates 81 are connected by connecting strips 82 made of flexible materials; the rigid horizontal plates 81 can withstand the lateral pressure when the casting section 20 casts concrete, and the flexible connecting strips 82 allow the rigid horizontal plates 81 to bend. In this way, the lifting module 7 can continuously lift the movable casting plate 8 to form a continuously rising concrete casting space between the two prefabricated wall panels.

[0065] During the actual pouring, cement is poured from the upper side of the movable pouring plate 8 into the pouring section. When the cement is poured to the flush position of the movable pouring plate 8, the movable pouring plate 8 is lifted to continue pouring cement in the newly formed upper pouring space. This design changes the cement pouring process from a full-section pouring to a multi-section segmented pouring, which effectively reduces the bubbles and gaps caused by the staggered distribution of the hook ends 21 during pouring and improves the pouring quality.

[0066] When pouring concrete, Figure 7 , Fig. 9 and Fig.10 As shown, the bottom of the movable casting plate 8 is fixed on the foundation bottom plate 1 to ensure that the cement does not burst. The telescopic end of the upper part of the lifting module 7 is equipped with a top roller 71, and the upper part of the vertical telescopic end of the lifting module 7 is designed with a horizontal connecting shaft. The top roller 71 is horizontally rotatably assembled on the connecting shaft at the upper part of the telescopic end. The movable casting plate 8 bypasses the top roller 71 and hangs down backward, so that when the vertical telescopic end of the lifting module 7 is lifted upward, the top roller 71 continuously lifts the movable casting plate 8 upward.

[0067] In this embodiment, if Figure 7 , Figure 8 and Fig. 9As shown, the lifting module 7 adopts a hydraulic multi-stage lifting structure, and a top rod 72 is designed at the bottom of the lifting rod of each stage of the lifting module 7. The number of the transverse plates 81 of the movable casting plate 8 corresponds to the number of the top rods 72. When the top rollers 71 are lifted upward one by one, cement is poured from the upper side of the movable casting plate into the casting section once each time it is lifted. At the same time, the corresponding top rods 72 are pressed against the transverse plates 81 to strengthen the fixation of the movable casting plate 8 and prevent cement from leaking out and exploding. A support rod 73 is hinged at the rear of the top roller 71 or the top rod 72, and the bottom of the support rod 73 is tilted and pressed against the ground. The support rod 73 provides lateral support force for the top rollers 71 and the top rods 72 of the lifting module 7, so that each rigid plate of the movable casting plate 8 can be directly pressed against the prefabricated wall panels 2 on both sides of the casting section 20. In the specific design, the bottom of the support rod 73 can be designed with corresponding multiple limiting structures, such as a track structure with a rack shape. The bottom of the support rod 73 can be inserted into the rack after being knocked. The support rod 73 can also achieve inclined support through other traditional limiting structures, which will not be described in detail here.

[0068] In the second pouring implementation method,

[0069] like Fig.11 and Fig.12 As shown, a lifting base 70 is designed at the bottom of the lifting module 7. The difference from the first embodiment is that a penetrating feed cavity 701 is designed in the middle of the lifting base 70, and a steering roller 702 is installed near the bottom of the casting section of the feed cavity; the number of transverse plates 81 of the movable casting plate 8 is greater than 10, so that the winding of the movable casting plate 8 is easier, and the distance of each rise is less when moving upward, so that the entire concrete pouring process is more uniform and the pouring effect is better.

[0070] In specific implementation, the movable casting plate 8 is rolled up on a material roller 80 that is assembled by self-rotation, and two prefabricated wall panels 2 to be cast are respectively designed with vertical retaining edges 24 at positions corresponding to both sides of the movable casting plate 8. The retaining edges 24 use vertical rigid plates. The retaining edges 24 can be directly cast on the prefabricated wall panels 2 when designing the prefabricated wall panels 2, or can be fixed on the prefabricated wall panels 2 through other fixed structures. A vertical sliding groove is processed on one side of the retaining edge 24 corresponding to the movable casting plate 8. When the top roller 71 is lifted upward, the movable casting plate 8 is always attached to the prefabricated wall panels 2 on both sides by the compression of the retaining edges 24.

[0071] The movable casting plate 8 on the material roller 80 passes through the lifting base 70 from the outside, and extends vertically upward through the steering roller 702. The outer side of the upper end of the movable casting plate 8 extending vertically upward is fixedly connected to the vertically upward end of the movable casting plate 8, and the retaining edge 24 presses the movable casting plate 8 extending vertically upward through the steering roller onto the prefabricated wall panel 2; a transverse connecting rod 721 is fixed to the upper part of the top rod 72 of the lifting module 7, and the two ends of the connecting rod 721 are symmetrically fixedly connected to the upward end of the movable casting plate 8 respectively; this embodiment realizes the material passing of the movable casting plate 8 from the bottom through the hollow structure of the lifting base 70 and the steering roller 702 structure, and can guide it upward. By means of the retaining edge 24 structure fixed on the prefabricated wall panel, the movable casting plate 8 moving upward can be close to the outer surface of the prefabricated wall panel 2, thereby forming a casting space with the fixed casting plate 23. This structure can also make the formed casting space rise slowly, thereby gradually completing the casting process, ensuring the casting requirements of concrete in reinforced concrete, and also achieving the technical effect described in the casting implementation method one.

[0072] In specific use, the present invention realizes a rapid improvement in construction speed through a combination of direct splicing between the prefabricated wall panels 2 and the ground bottom plate and splicing with a reserved post-casting section. In the wall column part, concrete is cast in situ to enhance its load-bearing capacity and firmness; while the rest of the parts are directly spliced ​​with prefabricated wall panels 2, simplifying the construction process; in the cement pouring process, segmented pouring is used to greatly reduce cement bubbles and gaps caused by the staggered arrangement of the hook ends 21 or climate temperature factors, thereby speeding up the construction efficiency and improving the overall construction quality.

[0073] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated basement exterior wall connection structure, comprising a foundation slab (1); at least two vertical prefabricated wall panels (2) are placed on the top of the foundation slab (1); a vertical casting section (20) is designed between the two prefabricated wall panels (2) constituting the same wall, and concrete is cast in the casting section (20) for connection; characterized in that: The foundation bottom plate (1) is provided with a horizontal placement groove (11); two prefabricated wall panels (2) on the same wall surface are placed in the same placement groove (11); the bottom of the prefabricated wall panel (2) is placed in the placement groove (11) via a height adjustment pad (12); a horizontal expansion water stop strip (3) is placed on the side of the height adjustment pad (12); concrete is poured in the placement groove (11) to wrap the lower part of the prefabricated wall panel; The prefabricated wall panels (2) are internally provided with transverse steel bars arranged in parallel vertically and penetrating the wall horizontally along the wall surface direction; the transverse steel bars extending from the side of the prefabricated wall panels (2) are provided with bent hook ends (21); the hook ends (21) extending from the sides to be cast of the two prefabricated wall panels (2) are arranged vertically and alternately in the casting section (20); A vertical fixed casting plate (23) is fixed on one side of the casting section of two prefabricated wall panels (2) to be cast, and a lifting module (7) and a movable casting plate (8) are provided on the other side of the casting section (20), wherein the telescopic end of the lifting module (7) is vertically upward, and the movable casting plate (8) comprises two or more horizontal plates (81) made of rigid materials, and the horizontal plates (81) are connected by connecting strips (82) made of flexible materials; the lifting module (7) continuously lifts the movable casting plate (8) so that a casting space that is continuously raised is formed between the two prefabricated wall panels; During pouring, cement is poured from the upper side of the movable pouring plate (8) into the pouring section. When the cement is poured to a flush position with the movable pouring plate (8), the movable pouring plate (8) is lifted to continue pouring cement in the newly formed upper pouring space.

2. A prefabricated basement exterior wall connection structure according to claim 1, characterized in that: The side of the prefabricated wall panel (2) is processed with a vertical side groove (22), and a vertical expansion water stop strip (3) is attached to the middle of the concave part of the side groove (22). The side groove (22) is a trapezoidal groove, and the upper bottom of the trapezoidal cross section of the side groove (22) is sunken into the wall, and the angle between the waistline on both sides of the trapezoidal cross section of the side groove (22) and the upper bottom is an obtuse angle; the concrete poured in the pouring section completely wraps the hooking end (21) protruding from the wall and the expansion water stop strip (3).

3. The prefabricated basement exterior wall connection structure according to claim 1, characterized in that: The side edge of the prefabricated wall panel (2) is processed with a vertical side groove (22), and the side edge of the side groove (22) is processed with a vertical water stop plate (3a) whose part of the plate surface is pre-embedded in the interior of the prefabricated wall panel, and the outer side of the water stop plate (3a) extends out of the side edge of the prefabricated wall panel (2), and the water stop plate (3a) is made of steel plate or rubber material.

4. The prefabricated basement exterior wall connection structure according to claim 1, characterized in that: The walls of the basement are connected to each other via cast-in-place pilasters (4); the concrete cast in the pilasters (4) wraps around the prefabricated wall panels (2) via the laterally protruding hook ends (21); the basement is provided with prepared columns (41) corresponding to the pilasters (4); the upper parts of the pilasters (4) and the prepared columns (41) are respectively provided with protruding steel bar ends; the pilasters (4) and the prepared columns (41) and the upper parts of two adjacent prepared columns (41) are respectively connected by cast-in connection with prefabricated cross beams (5) via the protruding steel bar ends; transverse steel bars for cast-in connection are extended from both ends of the prefabricated cross beams (5); the upper part of the prefabricated cross beams (5) is provided with n-shaped protruding beam top steel bars (51); the top of the basement adopts a prefabricated top plate (6); steel bar ends are extended from both sides of the prefabricated top plate (6); the prefabricated top plate is cast-in connection with the n-shaped beam top steel bars (51) on the upper part of the prefabricated cross beam via the steel bar ends extended from both sides.

5. The prefabricated basement exterior wall connection structure according to claim 4, characterized in that: The prefabricated top plate (6) is designed to be stepped, and each layer of the stepped prefabricated top plate (6) is designed with a steel bar end extending above the prefabricated cross beam (5) or the outer wall of the basement; the steel bar end extending from the prefabricated top plate (6) is bent downward.

6. The prefabricated basement exterior wall connection structure according to claim 1, characterized in that: The prefabricated wall panel (2) is also designed with transversely arranged vertical steel bars, the transversely and vertically arranged steel bars forming a mesh structure in the wall, the prefabricated wall panel (2) is designed with front and rear mesh steel bars, the front and rear mesh steel bars extending to the side of the prefabricated wall panel (2) with the hooks of the hooked ends facing inwards.

7. The prefabricated basement exterior wall connection structure according to claim 1, characterized in that: The bottom of the movable casting plate (8) is fixed on the base bottom plate (1), the telescopic end of the upper part of the lifting module (7) is equipped with a top roller (71), the movable casting plate (8) bypasses the top roller (71) and hangs down backward, the lifting module (7) adopts a multi-stage lifting structure, and the bottom of the lifting rod of each stage of the lifting module (7) is designed with a top rod (72), and the number of the horizontal plates (81) of the movable casting plate (8) corresponds to the number of the top rods (72); The top rollers (71) are gradually lifted upwards, and each time they are lifted upwards, cement is poured from the upper side of the movable pouring plate into the pouring section, and at the same time, the corresponding top rods (72) are pressed tightly against the horizontal plate (81); A support rod (73) is hingedly connected to the rear of the top roller (71) or the top rod (72), and the bottom of the support rod (73) is tilted and pressed against the ground.

8. The prefabricated basement exterior wall connection structure according to claim 7, characterized in that: The bottom of the lifting module (7) is provided with a lifting base (70), the middle of the lifting base (70) is provided with a penetrating feeding cavity (701), and the feeding cavity is provided with a steering roller (702) near the bottom of the casting section; the number of the transverse plates (81) of the movable casting plate (8) is greater than 10, the movable casting plate (8) is rolled up on the material roller (80) which is assembled and rotated on its axis, and the two prefabricated wall panels (2) to be cast are provided with vertical retaining edges (24) at positions corresponding to both sides of the movable casting plate (8); the movable casting plate (8) on the material roller (80) passes through the lifting base (70) from the outside, and extends vertically upward through the steering roller (702), the outer side of the upper end of the movable casting plate (8) extending vertically upward is fixedly connected to the vertically upward end of the movable casting plate (8), and the retaining edge (24) presses the movable casting plate (8) extending vertically upward through the steering roller onto the prefabricated wall panel (2); When the top roller (71) is lifted upward, the movable casting plate (8) is pressed tightly by the retaining edge (24) and is always attached to the prefabricated wall panels (2) on both sides.

9. The prefabricated basement exterior wall connection structure according to claim 8, characterized in that: The retaining edge (24) is a vertical rigid plate, and a vertical sliding groove is processed on one side of the retaining edge (24) corresponding to the movable casting plate (8); a transverse connecting rod (721) is fixed to the upper part of the top rod (72) of the lifting module (7), and the two ends of the connecting rod (721) are symmetrically fixedly connected to the upward end of the movable casting plate (8).

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