Prefabricated outer wall structure system

Abstract

This utility model relates to the field of precast exterior wall technology, specifically a precast exterior wall structure system, comprising a concrete slab and built-in steel reinforcement components. The slab has spaced grooves on its four sides, grouting holes and overflow holes on its inner side, and a bottom groove adjacent to a slot and communicating with the grouting holes. Conveying holes on both sides of the groove connect the slot and the overflow holes. The steel reinforcement components include diagonal steel bars, vertical steel bars penetrating the top of the slab, and horizontal steel bars extending on both sides to form a closed frame structure. During installation, the frame ends of the horizontal steel bars are fitted with the frame column steel bars for positioning, and the vertical steel bars are inserted into the pre-reserved steel bars in the lower slab. Simultaneously with the pouring of the frame columns, the lateral grooves are filled to form a wedge-lock structure. Grout is injected into the slot through the grouting holes to wrap around the vertical steel bars. After overflowing, it is guided through the conveying holes to fill the bottom groove. Air is discharged through the overflow holes until the grout overflows, completing the determination. This system eliminates inter-layer misalignment, ensures grout filling without cavities through the groove system, establishes a continuous load-bearing structure, and significantly improves construction efficiency and building integrity.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated exterior wall technology, specifically a prefabricated exterior wall structure system. Background Technology

[0002] Precast exterior wall structures are building envelope systems where concrete wall panel units are prefabricated in a factory, transported to the construction site, and then efficiently assembled using reliable connection technologies. Their core value lies in overcoming the limitations of traditional on-site casting methods on construction efficiency and quality. Specifically: standardized factory production ensures dimensional accuracy and material uniformity of the walls through optimized curing conditions and mold precision, avoiding the risk of temperature shrinkage cracks during on-site construction; modular assembly utilizes mechanical hoisting and positioning connection technologies to transform high-altitude operations into ground assembly processes, significantly reducing on-site wet work, lowering safety risks, and shortening the construction period; simultaneously, the precast system provides a feasible path for diverse building facade designs, enabling customized requirements such as complex textures and irregularly shaped window openings to be accurately presented at a controllable cost. Ultimately, this achieves a triple breakthrough in project quality, construction speed, and economy, becoming a core carrier for the upgrading of the modern construction industry.

[0003] However, traditional precast exterior walls rely on on-site welding or bolt connections for positioning, resulting in low assembly efficiency and easy misalignment between panel layers due to construction errors, affecting the verticality of the structure and the continuity of load transfer. In addition, conventional grouting processes lack directional flow guidance and venting judgment structures, leading to uneven grout filling, voids, reduced joint waterproofing, and the need for multiple grouting applications, increasing construction costs and time. Utility Model Content

[0004] The purpose of this utility model is to provide a prefabricated exterior wall structure system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A precast exterior wall structure system includes a concrete slab. The slab has several grooves spaced apart on its four sides (top, bottom, left, and right). The inner side of the slab has several grouting holes spaced apart. Overflow holes are located between the grouting holes on the inner side of the slab. Slots are located at the bottom of the slab adjacent to the grooves, and these slots are interconnected with the grouting holes. Conveying holes are symmetrically located on the two side walls of the grooves at the bottom of the slab, and these conveying holes are connected to adjacent slots and overflow holes.

[0006] Preferably, the plate body has several gaps that are staggered horizontally and vertically on the side opposite to the grouting hole, and several symmetrically staggered diagonal steel bars, several vertical steel bars and several horizontal steel bars are fixedly installed inside the plate body.

[0007] Preferably, the diagonal reinforcing bars, vertical reinforcing bars, and several horizontal reinforcing bars are fixed together by winding steel wires, and the diagonal reinforcing bars form a triangular support.

[0008] Preferably, the top ends of the vertical reinforcing bars extend through the top end of the plate and are adjacent to the grooves on the top of the plate.

[0009] Preferably, the top end of the vertical reinforcing bar is configured to be inserted into a slot at the bottom of another plate and to form a plug-in fit with the slot.

[0010] Preferably, the transverse reinforcing bars extend and penetrate both sides of the slab, and are adjacent to the grooves on both sides of the slab, and the two extended ends of the transverse reinforcing bars are closed frame structures.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This prefabricated exterior wall structure system achieves efficient multi-directional load transfer and eliminates the need for adjustment during panel hoisting through the synergistic effect of vertical steel bar insertion for self-positioning, horizontal steel bar frame-type end sleeve, and groove wedge filling. It avoids the problems of inter-layer misalignment and reliance on welding for horizontal force transmission in traditional prefabricated exterior walls.

[0012] This prefabricated exterior wall structure system utilizes a connected path design of grouting hole-slot-conveying hole-overflow hole, combined with a visible overflow judgment mechanism for grout filling, to simultaneously achieve vertical steel reinforcement sealing, bottom groove dense filling, and zero-cavity airtightness, reducing blind spots, air bubbles, and grouting rework defects in traditional grouting processes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front view structural diagram of the plate body of this utility model; Figure 3 This is a schematic diagram of the bottom structure of the plate body of this utility model; Figure 4 This is a schematic diagram of the planar structure of the plate body of this utility model; Figure 5 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0014] In the diagram: 101, plate; 102, groove; 103, grouting hole; 104, overflow hole; 105, slot; 106, conveying hole; 107, gap; 109, diagonal reinforcement; 110, vertical reinforcement; 111, horizontal reinforcement. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 As shown, this utility model provides a technical solution: A precast exterior wall structure system includes a concrete slab 101. The slab 101 has several grooves 102 spaced apart on its four sides (top, bottom, left, and right). The slab 101 has several grouting holes 103 spaced apart on its inner side. Overflow holes 104 are provided between the grouting holes 103 on the inner side of the slab 101. Slots 105 are provided at the bottom of the slab 101 adjacent to the grooves 102, and these slots 105 are interconnected with the grouting holes 103. Conveying holes 106 are symmetrically provided on the two side walls of the grooves 102 at the bottom of the slab 101, and these conveying holes 106 are connected to adjacent slots 105 and overflow holes 104.

[0017] The above scheme allows for the formation of horizontal grout filling cavities between the plates through the grooves spaced along the four sides of the plate. Grout injection is achieved through the grouting holes inside the plate, and overflow holes between the grouting holes provide venting and overflow indication. Vertical reinforcing bars can be inserted and supported through the bottom slots, and the connection between the slots and the grouting holes ensures the grout seals the vertical reinforcing bars. Symmetrical conveying holes on both sides of the grooves allow for the directional flow of grout from the slots to the grooves. In this embodiment, preferably, the plate 101 has several gaps 107 that are staggered horizontally and vertically on the side opposite to the grouting hole 103, and several symmetrically staggered diagonal steel bars 109, several vertical steel bars 110 and several horizontal steel bars 111 are fixedly installed inside the plate 101.

[0018] The above scheme can significantly increase the adhesion of the external insulation layer sprayed through the horizontal and vertical crisscross gaps on the surface of the plate to prevent it from falling off. The diagonal steel bars can form a multi-directional tensile force transmission structure. The vertical steel bars can establish a main channel for longitudinal load transfer. The horizontal steel bars can form a horizontal load distribution system.

[0019] In this embodiment, preferably, the inclined reinforcing bars 109, vertical reinforcing bars 110 and several horizontal reinforcing bars 111 are respectively fixed by winding with steel wire, and the inclined reinforcing bars 109 form a triangular support.

[0020] The above scheme allows for the formation of a continuous shear resistance network through symmetrically staggered diagonal reinforcement bars, the construction of a load-bearing support system through vertical reinforcement bars, and the connection of the plate boundaries through transverse reinforcement bars to form a constraint ring.

[0021] In this embodiment, preferably, the top ends of the vertical reinforcing bars 110 extend through the top end of the plate 101 and are adjacent to the grooves 102 on the top of the plate 101.

[0022] The above scheme enables the overall coordinated force distribution of the steel reinforcement assembly through wire winding and fixing, and the triangular support formed by the inclined steel reinforcement can convert the eccentric load into axial pressure.

[0023] In this embodiment, preferably, the top end of the vertical reinforcing bar 110 is configured to be inserted into a slot 105 at the bottom of another plate 101 and to form a plug-in engagement with the slot 105.

[0024] The above scheme achieves a physical connection channel with the upper components by setting the top of the vertical steel bar through the plate. The adjacent arrangement with the top groove can avoid interference from the grout filling. The plug-in joint structure can achieve precise vertical positioning and gravity transfer between the plates.

[0025] In this embodiment, preferably, the transverse steel bars 111 extend through both sides of the plate 101 and are adjacent to the grooves 102 on both sides of the plate 101, and the two extended ends of the transverse steel bars 111 are closed frame structures.

[0026] The above scheme allows for the formation of a horizontal connection with the main structure by extending transverse steel bars through both sides. The adjacent arrangement of the steel bars with the grooves on both sides of the slab ensures the interlocking depth of the concrete. The closed frame structure enhances the mechanical interlocking strength with the concrete of the frame columns.

[0027] In this embodiment, a prefabricated exterior wall structure system is used. During assembly, the concrete slab 101 is first vertically lifted using hoisting equipment. Simultaneously, during hoisting, the closed frame structure at the extended ends of the transverse reinforcing bars 111 on both sides of the slab 101 must be precisely fitted into the outer side of the adjacent vertical structure (such as the internal reinforcing bars of an uncast frame column) to form a horizontal positioning constraint. Furthermore, the slot 105 at the bottom of the slab 101 must be aligned with and inserted into the exposed section of the vertical reinforcing bar 110 extending from the top of the already installed slab 101 below. This exposed section has been encased and fixed by the concrete of the supporting beam at the top of the slab 101 below during the initial construction, and the vertical reinforcing bar 110 continues to extend upwards with sufficient insertion length. The vertical self-positioning of the plate 101 is achieved by interlocking the vertical reinforcing bars 110 with the slots 105. After hoisting, the plate 101 is fixed in position with the assistance of temporary supports. Then, the formwork for the frame columns and the concrete pouring are carried out. During this process, the poured concrete simultaneously fills the grooves 102 on both sides of the plate 101, forming a wedge-shaped locking structure within the grooves 102 to enhance the lateral displacement resistance of the plate 101. Simultaneously, the concrete of the frame columns encloses the ends of the closed frame structure of the transverse reinforcing bars 111, allowing the horizontal load to be effectively transferred to the main structure through the closed frame structure. Furthermore, during the pouring of the frame columns, high-strength grout is injected from the grouting holes 103 at the top of the plate 101. Under gravity, the grout first flows into the slots 105. The exposed sections of the vertical reinforcing bars 110 inserted into the groove are completely covered and sealed. When the grout in the slot 105 is filled to the set height, the excess grout is guided laterally through the conveying hole 106 to the bottom groove 102 of the plate 101 to continuously fill the space of the groove 102. Subsequently, during the entire grouting process, the pre-set overflow hole 104 on the plate 101 continuously discharges air in the grouting path, greatly reducing the porosity of the grout. As the filling degree of the groove 102 increases, the overflow hole 104 gradually discharges pure grout. At this point, the operator can intuitively determine that the grouting filling is complete without relying on additional testing equipment. Finally, after the frame column concrete and the filling grout have cured simultaneously, multiple synergistic effects ultimately form the final shape: the vertical reinforcing bars 110 The plug-in structure provides precise support and positioning, the consolidation of the transverse steel bars 111 with the frame columns enables horizontal load transfer, the wedge-shaped filling of the groove 102 suppresses lateral displacement, and the dense, bubble-free grout coating layer forms a continuous and stable rigid connection between the panels 101, thus ultimately achieving the integrated technical effect of rapid hoisting and positioning, efficient multi-directional load transfer, and overall waterproofing and seepage prevention. The horizontal and vertical crisscrossing gaps 107 opened on the surface of the panel 101 significantly improve the adhesion of the external insulation layer to prevent the insulation layer from falling off. The overall logic significantly improves the assembly accuracy and structural integrity through three core mechanisms: structural self-positioning, grouting path self-guidance, and venting self-determination, while avoiding the need for secondary adjustment and grouting operations in traditional processes.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A prefabricated external wall construction system comprising a panel (101) made of concrete, characterized in that: The plate (101) has a plurality of grooves (102) spaced apart on its four sides (top, bottom, left, and right). The inner side of the plate (101) has a plurality of grouting holes (103) spaced apart. The inner side of the plate (101) has overflow holes (104) spaced between the grouting holes (103). The bottom of the plate (101) has slots (105) spaced adjacent to the grooves (102). The slots (105) are connected to the grouting holes (103). The two side walls of the grooves (102) at the bottom of the plate (101) have symmetrically arranged conveying holes (106). The conveying holes (106) are connected to the adjacent slots (105) and overflow holes (104).

2. The prefabricated exterior wall structure system according to claim 1, characterized in that: The plate (101) has several gaps (107) that are staggered horizontally and vertically on the side opposite to the grouting hole (103). Several symmetrically staggered diagonal steel bars (109), several vertical steel bars (110) and several horizontal steel bars (111) are fixedly installed inside the plate (101).

3. The prefabricated exterior wall structure system according to claim 2, characterized in that: The inclined reinforcing bars (109), vertical reinforcing bars (110), and several horizontal reinforcing bars (111) are respectively fixed by winding with steel wire, and the inclined reinforcing bars (109) form a triangular support.

4. The prefabricated exterior wall structure system according to claim 3, characterized in that: The top ends of the vertical reinforcing bars (110) extend through the top end of the plate (101) and are adjacent to the grooves (102) at the top of the plate (101).

5. The precast exterior wall structural system according to claim 4, wherein: The top end of the vertical reinforcing bar (110) is configured to be inserted into a slot (105) at the bottom of another plate (101) and to form a plug-in engagement with the slot (105).

6. The precast exterior wall structural system according to claim 5, wherein: The transverse steel bars (111) extend through both sides of the plate (101) and are adjacent to the grooves (102) on both sides of the plate (101). The two extended ends of the transverse steel bars (111) are closed frame structures.

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