Fabricated earthquake-resistant energy-saving composite wall structure

Abstract

The utility model discloses an assembled anti-seismic energy-saving composite wall structure belongs to building wall technical field. The structure includes prefabricated concrete outer leaf plate, heat preservation layer and prefabricated concrete inner leaf plate, three are connected as an organic whole through connecting piece, and connecting piece includes steel bar truss, and heat preservation layer is located in the middle part of steel bar truss, and the limiting piece is arranged between prefabricated concrete outer leaf plate and prefabricated concrete inner leaf plate. The utility model has good anti-seismic performance and energy-saving effect, and steel bar truss enhances wall strength and anti-seismic performance, and limiting piece limits relative displacement, and heat preservation layer reduces heat transfer, and is applicable to assembled building.

Description

Technical Field

[0001] This utility model relates to the field of building wall technology, specifically to a prefabricated earthquake-resistant and energy-saving composite wall structure. Background Technology

[0002] With the development of the construction industry, the requirements for walls are becoming increasingly stringent. They not only need excellent seismic performance to ensure the safety of buildings during disasters such as earthquakes, but also superior energy efficiency to reduce building energy consumption. Traditional wall structures have certain shortcomings in terms of seismic resistance and energy conservation, and their construction efficiency is relatively low, making it difficult to meet the needs of modern buildings. Prefabricated buildings have advantages such as fast construction speed and controllable quality; therefore, developing a seismic-resistant and energy-saving composite wall structure suitable for prefabricated buildings is of significant practical importance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a prefabricated earthquake-resistant and energy-saving composite wall structure to solve the problems of insufficient earthquake resistance and energy-saving performance and low construction efficiency of traditional walls mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a prefabricated earthquake-resistant and energy-saving composite wall structure, comprising a precast concrete outer leaf plate, an insulation layer, and a precast concrete inner leaf plate, wherein the precast concrete outer leaf plate, the insulation layer, and the precast concrete inner leaf plate are arranged sequentially from the outside to the inside, and the three are connected as a whole by a connector; the connector includes a steel truss disposed between the precast concrete outer leaf plate and the precast concrete inner leaf plate, wherein the two ends of the steel truss are fixedly connected to the precast concrete outer leaf plate and the precast concrete inner leaf plate respectively, and the insulation layer is located in the middle of the steel truss.

[0005] Furthermore, the steel truss includes upper chord steel bars, lower chord steel bars, and web steel bars. The upper chord steel bars and lower chord steel bars are arranged in parallel, and the web steel bars are wavy, with their two ends connected to the upper chord steel bars and lower chord steel bars, respectively.

[0006] Furthermore, the insulation layer is extruded polystyrene foam board or polyurethane foam board.

[0007] Furthermore, both the outer and inner surfaces of the precast concrete outer leaf plate and the precast concrete inner leaf plate are provided with rough surfaces to increase the connection strength with the connectors.

[0008] Furthermore, a limiting member is provided between the precast concrete outer leaf plate and the precast concrete inner leaf plate, the limiting member being used to limit the relative displacement between the precast concrete outer leaf plate and the precast concrete inner leaf plate.

[0009] Furthermore, the limiting component includes a limiting protrusion disposed on the outer leaf plate of the precast concrete and a limiting groove disposed on the inner leaf plate of the precast concrete, wherein the limiting protrusion and the limiting groove cooperate with each other.

[0010] The beneficial effects of this utility model are as follows: This utility model, by setting up a precast concrete outer leaf plate, an insulation layer, and a precast concrete inner leaf plate, and connecting the three into a whole through connectors, forms a composite wall structure with good seismic performance and energy-saving effect. The steel truss, as a connector, not only connects the precast concrete outer leaf plate and the precast concrete inner leaf plate, but also enhances the overall strength and seismic performance of the wall; the setting of the limiting component can restrict the relative displacement between the precast concrete outer leaf plate and the precast concrete inner leaf plate, further improving the seismic performance of the wall; the setting of the insulation layer can effectively reduce heat transfer within the wall, improving the energy-saving effect of the wall. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0013] Figure 2 This is a structural schematic diagram of Embodiment 2 of this utility model. Detailed Implementation

[0014] The technical solution of this utility model will be clearly and completely described below through specific embodiments.

[0015] Example 1

[0016] refer to Figure 1 and Figure 2 This utility model discloses a prefabricated earthquake-resistant and energy-saving composite wall structure, the core of which consists of a precast concrete outer leaf slab 1, an insulation layer 2, and a precast concrete inner leaf slab 3. The three layers are arranged sequentially from the outside to the inside and are stably connected by connectors to form a cohesive whole structural system.

[0017] The connector described herein uses a steel truss 4 as the core connecting component, with its two ends extending into the precast concrete outer leaf slab 1 and the precast concrete inner leaf slab 3, respectively. Reliable fixing is achieved through high-strength grouting or mechanical anchoring, ensuring effective force transmission between the outer and inner leaf slabs. The insulation layer 2 is tightly fitted into the central space of the steel truss 4, and a special adhesive is used to seal the layer between it and the steel truss 4, effectively preventing thermal bridging and air penetration.

[0018] The steel truss 4 employs a unique three-dimensional spatial structure, comprising top chord reinforcement 41, bottom chord reinforcement 42, and web reinforcement 43. The top chord reinforcement 41 and bottom chord reinforcement 42 are arranged parallel to the wall thickness, forming the upper and lower load-bearing main members of the truss. The web reinforcement 43 features a wavy design and is reliably connected to the top and bottom chord reinforcements via high-frequency resistance welding. This wavy web reinforcement design not only effectively increases the moment of inertia of the steel truss section but also significantly improves the out-of-plane stability and torsional resistance of the steel truss 4 through a unique force transmission path.

[0019] The insulation layer 2 is made of extruded polystyrene foam board or polyurethane foam board. Both of these materials have good thermal insulation properties, which can effectively reduce heat transfer from the wall and improve the wall's energy-saving effect. The surfaces of the precast concrete outer leaf slab 1 and the precast concrete inner leaf slab 3 are roughened to increase the connection strength with the connectors and ensure a firm connection between the various parts of the wall.

[0020] Working principle: In use, the precast concrete outer leaf slab 1, the insulation layer 2, and the precast concrete inner leaf slab 3 are connected as a whole by a steel truss 4 to form a composite wall structure. The steel truss 4 not only serves as a connector but also enhances the overall strength and seismic performance of the wall; the insulation layer 2 effectively reduces heat transfer within the wall, achieving energy-saving effects.

[0021] Example 2

[0022] like Figure 2 As shown, a limiting member 5 is provided between the precast concrete outer leaf plate 1 and the precast concrete inner leaf plate 3. The limiting member adopts a mechanical structure design with concave and convex fit, which can effectively maintain the stability of the wall structure under complex external forces.

[0023] The limiting component 5 consists of two parts: one part is a limiting protrusion 51 integrally formed on the inner side of the precast concrete outer leaf plate 1 by a mold, and its cross section is an isosceles trapezoid; the other part is a limiting groove 52 correspondingly set on the outer side of the precast concrete inner leaf plate 3. The depth of the groove is precisely matched with the height of the protrusion, and the inner wall is provided with a 0.5mm thick elastic rubber buffer layer.

[0024] In actual operation, when encountering horizontal shear forces generated by an earthquake, the limiting protrusion 51 will embed into the limiting groove 52 to form a mechanical engagement. The trapezoidal structure's inclined surface design can decompose the horizontal force into vertical pressure and lateral friction force. Combined with the energy absorption characteristics of the rubber buffer layer, it can effectively suppress the relative misalignment between the two plates. In addition, the limiting component 5 can also prevent misalignment of the plates during transportation and hoisting, significantly improving the accuracy and efficiency of construction and installation.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A prefabricated earthquake-resistant and energy-saving composite wall structure, characterized in that: The device includes a precast concrete outer leaf plate (1), an insulation layer (2), and a precast concrete inner leaf plate (3). The precast concrete outer leaf plate (1), the insulation layer (2), and the precast concrete inner leaf plate (3) are arranged sequentially from the outside to the inside, and the three are connected as a whole by a connector. The connector includes a steel truss (4) arranged between the precast concrete outer leaf plate (1) and the precast concrete inner leaf plate (3). The two ends of the steel truss (4) are fixedly connected to the precast concrete outer leaf plate (1) and the precast concrete inner leaf plate (3) respectively. The insulation layer (2) is located in the middle of the steel truss (4). The steel truss (4) includes an upper chord steel bar (41), a lower chord steel bar (42) and a web steel bar (43). The upper chord steel bar (41) and the lower chord steel bar (42) are arranged in parallel. The web steel bar (43) is wavy and its two ends are connected to the upper chord steel bar (41) and the lower chord steel bar (42) respectively. A limiting member (5) is also provided between the precast concrete outer leaf plate (1) and the precast concrete inner leaf plate (3); the limiting member (5) is used to limit the relative displacement between the precast concrete outer leaf plate (1) and the precast concrete inner leaf plate (3).

2. The prefabricated earthquake-resistant and energy-saving composite wall structure according to claim 1, characterized in that: The insulation layer (2) is extruded polystyrene foam board or polyurethane foam board.

3. The prefabricated earthquake-resistant and energy-saving composite wall structure according to claim 1, characterized in that: Both the surface of the precast concrete outer leaf plate (1) and the precast concrete inner leaf plate (3) are provided with rough surfaces.

4. The prefabricated earthquake-resistant and energy-saving composite wall structure according to claim 1, characterized in that: The limiting component (5) includes a limiting protrusion (51) provided on the precast concrete outer leaf plate (1) and a limiting groove (52) provided on the precast concrete inner leaf plate (3), wherein the limiting protrusion (51) and the limiting groove (52) cooperate with each other.

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