Lightweight sandwich thermal insulation external wall panel and method of construction thereof

Abstract

The application discloses a light sandwich thermal insulation outer wall plate and a construction method thereof, which comprises a wall plate body, the wall plate body comprising an inner leaf plate, an integrated thermal insulation plate and an outer leaf plate, the inner leaf plate comprising a steel bar structure and cast-in-place concrete, the steel bar structure having a steel bar dense area and a steel bar sparse area, the steel bar structure of the steel bar dense area being coated with the cast-in-place concrete, the cast-in-place concrete in the steel bar dense area around the steel bar sparse area being enclosed to form a left hole, the integrated thermal insulation plate being laid on the outer side of the inner leaf plate, the integrated thermal insulation plate being closed to the hole opening at one end of the left hole, and the outer leaf plate being laid on the side of the integrated thermal insulation plate away from the inner leaf plate; and cast-in-place concrete being cast in the left hole and coated on the steel bar structure of the steel bar sparse area. The application solves the problem that the traditional sandwich thermal insulation outer wall plate is too large or too heavy to exceed the allowable lifting weight of a tower crane.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a lightweight sandwich insulated exterior wall panel and its construction method. Background Technology

[0002] During the traditional installation of sandwich insulated exterior wall panels, situations often arise where the panels are too large or too heavy, exceeding the lifting capacity of the tower crane and preventing it from lifting them properly.

[0003] When encountering such problems, construction sites typically adopt two approaches: increasing the size of the tower crane or reducing the number of exterior wall panels. However, both approaches have their own problems.

[0004] 1) Increasing the number of tower crane models will result in higher tower crane rental costs. The monthly rental difference for a first-class tower crane model is about 20,000 to 30,000 yuan, which is an additional burden for projects with many tower cranes and long construction periods.

[0005] 2) Reducing the number of exterior wall panels means increasing the number of joints in the exterior wall, which is detrimental to the waterproofing effect and also increases the number of times the panels are installed, which will lead to an extension of the construction period.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, a lightweight sandwich insulated exterior wall panel and its construction method are provided to solve the problem that traditional sandwich insulated exterior wall panels are too large or too heavy, exceeding the lifting weight allowed by tower cranes.

[0008] To achieve the above objectives, a lightweight sandwich insulated exterior wall panel is provided, comprising:

[0009] The wall panel body includes an inner leaf panel, an integrated insulation panel, and an outer leaf panel. The inner leaf panel includes a steel reinforcement structure and pre-cast concrete. The steel reinforcement structure has a densely reinforced area and a sparsely reinforced area. The steel reinforcement structure in the densely reinforced area is covered by the pre-cast concrete. The pre-cast concrete in the densely reinforced area surrounds the sparsely reinforced area to form an open hole. The integrated insulation panel is laid on the outside of the inner leaf panel and closes the opening at one end of the open hole. The outer leaf panel is laid on the side of the integrated insulation panel away from the inner leaf panel.

[0010] Cast-in-place concrete is poured on-site into the reserved openings and covers the sparsely reinforced area of ​​the steel structure.

[0011] Furthermore, the cast-in-place concrete is micro-expansion concrete.

[0012] Furthermore, the grade of the cast-in-place concrete is higher than the elevation of the pre-cast concrete.

[0013] Furthermore, the opening is located in the middle of the inner leaf plate.

[0014] This invention provides a construction method for a lightweight sandwich insulated exterior wall panel, comprising the following steps:

[0015] Hoist the wall panel to the target floor;

[0016] Provide cast-in-place concrete, and pour the cast-in-place concrete on site into the reserved holes and cover the steel structure in the sparse steel reinforcement area to form a lightweight sandwich insulated exterior wall panel;

[0017] The lightweight sandwich insulated exterior wall panel is installed on the target floor.

[0018] The beneficial effects of this invention are that the construction method of the lightweight sandwich insulated exterior wall panel solves the problem of excessive weight of the exterior wall panel by reducing its weight. During the processing of the sandwich insulated exterior wall panel, concrete is not poured in areas with sparse reinforcement such as non-hidden columns and beams; only the reinforcement is embedded. The weight of the component is reduced by leaving gaps in the component. Depending on the size of the component, the weight can be reduced by up to about 0.4 tons, allowing the tower crane to safely lift the component. After the on-site hoisting is completed, the gaps in the component are sealed with cast-in-place concrete (such as micro-expansion concrete) during the second-floor structural construction stage.

[0019] The construction method of the lightweight sandwich insulated exterior wall panel of this invention solves the problem of excessive weight of the sandwich insulated exterior wall panel without increasing the type of tower crane or the number of lifting operations, while also reducing the risk of leakage by eliminating structural joints. It saves costs while ensuring construction period and quality, demonstrating good efficiency and feasibility. Attached Figure Description

[0020] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of the lightweight sandwich insulated exterior wall panel according to an embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional view of a lightweight sandwich insulated exterior wall panel according to an embodiment of the present invention. Detailed Implementation

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Reference Figure 1 and Figure 2 As shown, the present invention provides a lightweight sandwich insulated exterior wall panel, comprising: a wall panel body 1 and cast-in-place concrete.

[0026] Specifically, the wall panel body 1 includes an inner leaf panel 11, an integrated insulation panel 12, and an outer leaf panel 13.

[0027] In this embodiment, the inner leaf plate and the outer leaf plate are both reinforced concrete structural plates.

[0028] The inner leaf plate 11 includes a steel reinforcement structure 111 and pre-cast concrete.

[0029] In this embodiment, the reinforced steel structure 111 has a densely reinforced steel area and a sparsely reinforced steel area. The densely reinforced steel area refers to the region where steel bars are densely arranged, such as the concealed columns and beams of the wall panel. Conversely, the sparsely reinforced steel area refers to the region where steel bars are sparsely arranged compared to the densely reinforced steel area, such as the non-concealed columns and beams of the wall panel.

[0030] The reinforced concrete structure 111 in the densely reinforced area is encased in pre-cast concrete. The pre-cast concrete in the densely reinforced area surrounding the sparsely reinforced area forms an open cavity 10.

[0031] In a preferred embodiment, the opening 10 is provided in the middle of the inner leaf plate 11.

[0032] The integrated insulation board 12 is laid on the outside of the inner leaf plate 11. The integrated insulation board 12 is closed at one end of the opening of the vacant hole 10.

[0033] The outer leaf plate 13 is cast on the side of the integrated insulation board 12 away from the inner leaf plate 11. The outer leaf plate and the integrated insulation board are a complete structure relative to the openings in the inner leaf plate.

[0034] The cast-in-place concrete is poured in the open hole 10 and enclosed in the sparsely reinforced area of ​​the steel structure 111.

[0035] As a preferred implementation method, the cast-in-place concrete is micro-expansion concrete. The grade of the cast-in-place concrete is higher than that of the pre-cast concrete.

[0036] This invention provides a construction method for a lightweight sandwich insulated exterior wall panel, comprising the following steps:

[0037] S1: Hoist the wall panel body 1 to the target floor.

[0038] S2: Provide cast-in-place concrete, and pour the cast-in-place concrete on site into the open hole 10 and cover the steel structure 111 in the sparsely reinforced area to form a lightweight sandwich insulated exterior wall panel.

[0039] S3: Install lightweight sandwich insulated exterior wall panels on the target floor.

[0040] The construction method of the lightweight sandwich insulated exterior wall panel of the present invention solves the problem of excessive weight of the exterior wall panel by reducing its weight. During the processing of the sandwich insulated exterior wall panel, concrete is not poured in areas with sparse reinforcement such as non-hidden columns and beams. Instead, the reinforcement is embedded. The weight of the component is reduced by leaving gaps in the component. Depending on the size of the component, the weight can be reduced by up to about 0.4 tons, which allows the tower crane to lift the component safely. After the on-site hoisting is completed, the gaps in the component are sealed with cast-in-place concrete (such as micro-expansion concrete) during the second floor structure construction stage.

[0041] The construction method of the lightweight sandwich insulated exterior wall panel of this invention solves the problem of excessive weight of the sandwich insulated exterior wall panel without increasing the type of tower crane or the number of lifting operations, while also reducing the risk of leakage by eliminating structural joints. It saves costs while ensuring construction period and quality, demonstrating good efficiency and feasibility.

[0042] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A lightweight sandwich insulated exterior wall panel, characterized in that, include: The wall panel body includes an inner leaf panel, an integrated insulation panel, and an outer leaf panel. The inner leaf panel includes a steel reinforcement structure and pre-cast concrete. The steel reinforcement structure has a densely reinforced area and a sparsely reinforced area. The steel reinforcement structure in the densely reinforced area is covered by the pre-cast concrete. The pre-cast concrete in the densely reinforced area surrounds the sparsely reinforced area to form an open hole. The integrated insulation panel is laid on the outside of the inner leaf panel and closes the opening at one end of the open hole. The outer leaf panel is laid on the side of the integrated insulation panel away from the inner leaf panel. Cast-in-place concrete is poured on-site into the reserved holes and covers the sparsely reinforced area of ​​the steel structure. The densely reinforced area refers to the area where the reinforcing bars are densely arranged, that is, the area of ​​the wall panel with concealed columns and beams; the sparsely reinforced area refers to the area where the reinforcing bars are sparsely arranged compared to the densely reinforced area, that is, the area of ​​the wall panel without concealed columns and beams.

2. The lightweight sandwich insulated exterior wall panel according to claim 1, characterized in that, The cast-in-place concrete is micro-expansion concrete.

3. The lightweight sandwich insulated exterior wall panel according to claim 2, characterized in that, The grade of the cast-in-place concrete is higher than that of the pre-cast concrete.

4. The lightweight sandwich insulated exterior wall panel according to claim 1, characterized in that, The opening is located in the middle of the inner leaf plate.

5. A construction method for a lightweight sandwich insulated exterior wall panel as described in any one of claims 1 to 4, characterized in that, Includes the following steps: Hoist the wall panel to the target floor; Provide cast-in-place concrete, and pour the cast-in-place concrete on site into the reserved holes and cover the steel structure in the sparse steel reinforcement area to form a lightweight sandwich insulated exterior wall panel; The lightweight sandwich insulated exterior wall panel is installed on the target floor.

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