An assembled prestressed UHPC curtain wall panel

Abstract

The present invention discloses a prefabricated prestressed UHPC curtain wall panel, which relates to the technical field of building materials and includes a prestressed UHPC base plate, mounting parts installed near the upper and lower ends of the prestressed UHPC base plate, reinforcing ribs installed at the left and right ends of the prestressed UHPC base plate, and a groove body installed at the upper end of the prestressed UHPC base plate. Embedded sleeves are provided in the prestressed UHPC base plate at positions corresponding to the mounting parts and the reinforcing ribs. Both the mounting parts and the reinforcing ribs are connected to the embedded sleeves. The mounting parts and the reinforcing ribs are both located on the back of the prestressed UHPC base plate, and a thermal insulation and sound insulation layer is installed between the two reinforcing ribs. Sealing rubber strips are installed on the side edges of the reinforcing ribs, as well as on the side edges and the lower end of the prestressed UHPC base plate. A plurality of mounting hanging points are provided on the side of the reinforcing rib away from the prestressed UHPC base plate. The prefabricated prestressed UHPC curtain wall panel has multiple functions and good economic performance at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of building materials, and particularly relates to a prefabricated prestressed UHPC curtain wall panel. Background Art

[0002] In recent years, with the development of Ultra-High Performance Concrete (UHPC), due to the durability, plasticity, and aesthetics of the material itself, more and more buildings use UHPC as the decorative material for the exterior facade. However, various problems have occurred during use, such as plate cracking, connection sleeve ejection, etc. Moreover, the wind load is entirely borne by the steel frame behind the plate, and the steel content of the plate is high (the steel content per square meter is 20 Kg - 40 Kg), which is not economical. Most importantly, in most application scenarios, the UHPC exterior wall panel only serves as a decorative material for the building exterior facade (including the newly formulated industry specifications for UHPC exterior wall panels, such as TCBMF171-2022 TCCPA30-2022 "Ultra-High Performance Concrete (UHPC) Exterior Wall Panel" and TCBMF172-2022 TCCPA31-2022 "Ultra-High Performance Concrete (UHPC) Decorative Products"), without functions such as waterproofing and thermal insulation, and cannot meet the basic requirements of the water tightness, air tightness, wind pressure resistance, and in-plane deformation performance of the UHPC exterior wall panel as a building facade maintenance component. At the same time, the integration of existing UHPC plates is not high, the thermal insulation and sound insulation effects are not good, there is no integration of the interior decoration system, and a waterproof layer and a thermal insulation layer need to be additionally provided behind the UHPC plate. This greatly increases the construction cost of building maintenance components and limits the use and promotion of UHPC curtain wall panels.

[0003] Therefore, it is particularly important to improve and perfect the performance of building UHPC exterior wall panels, such as water tightness, air tightness, wind pressure resistance, in-plane deformation, thermal insulation, sound insulation, sound absorption, and impact resistance. Summary of the Invention

[0004] The purpose of the present invention is to provide a prefabricated prestressed UHPC curtain wall panel to solve the problems existing in the above-mentioned prior art, which has multiple functions and good economic performance at the same time.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The present invention provides a prefabricated prestressed UHPC curtain wall panel, which includes a prestressed UHPC base plate, mounting parts installed near the upper and lower ends of the prestressed UHPC base plate, reinforcing ribs installed at the left and right ends of the prestressed UHPC base plate, and a groove body installed at the upper end of the prestressed UHPC base plate. Embedded sleeves are provided in the prestressed UHPC base plate at positions corresponding to the mounting parts and the reinforcing ribs. Both the mounting parts and the reinforcing ribs are connected to the embedded sleeves. The mounting parts and the reinforcing ribs are both located on the back surface of the prestressed UHPC base plate, and a heat insulation and sound insulation layer is installed between the two reinforcing ribs. Sealing rubber strips are installed on the side edges of the reinforcing ribs, as well as on the side edges and the lower end of the prestressed UHPC base plate. A plurality of mounting hanging points are provided on one side of the reinforcing rib away from the prestressed UHPC base plate.

[0007] Preferably, the mounting part is an L-shaped angle steel, a square pipe or a U-shaped channel steel, and both ends of the mounting part extend to be flush with the left and right sides of the prestressed UHPC base plate.

[0008] Preferably, the groove body includes a U-shaped groove and an extension plate. One end of the extension plate is connected to one side of the lower end surface of the U-shaped groove, and the other end of the extension plate extends away from the U-shaped groove. The lower end surface of the U-shaped groove is located above the upper end of the reinforcing rib, and the lower end surface of the extension plate is located above the upper end of the prestressed UHPC base plate. Drainage holes are provided on one side of the U-shaped groove close to the extension plate.

[0009] Preferably, it further includes a connecting piece. The connecting piece is U-shaped and is slidably installed in the U-shaped groove, and the connecting piece can slide until one end of the connecting piece is located in the U-shaped groove on the adjacent prestressed UHPC base plate.

[0010] Preferably, both the connecting piece and the groove body are made of aluminum alloy material.

[0011] Preferably, the reinforcing rib is provided with a clearance groove at a position corresponding to each mounting part, and the mounting part can be embedded in the clearance groove.

[0012] Preferably, high-strength steel bars and embedded parts are provided inside the reinforcing rib. The length direction of the high-strength steel bars is consistent with the length direction of the reinforcing rib. Embedded sleeves are provided in the prestressed UHPC base plate at positions corresponding to the embedded parts. The reinforcing rib is connected to the prestressed UHPC base plate by passing a screw through the embedded part and connecting it to the embedded sleeve.

[0013] Preferably, the reinforcing ribs include transverse ribs and longitudinal ribs. One end of the longitudinal rib is connected to one side of the longitudinal rib to form a reinforcing rib with a T-shaped cross-section. The upper and lower ends of the reinforcing rib are flush with the upper and lower ends of the prestressed UHPC substrate respectively. The reinforcing rib is made of UHPC material.

[0014] Preferably, aluminum alloy members are installed on one side of the transverse rib close to the adjacent prestressed UHPC substrate, one side of the longitudinal rib close to the prestressed UHPC substrate, as well as the side and lower end of the prestressed UHPC substrate. And sealant strips are installed on one side of each aluminum alloy member close to the adjacent prestressed UHPC substrate.

[0015] Preferably, a calcium silicate board is provided on one side of the thermal insulation and sound insulation layer away from the prestressed UHPC substrate. The thermal insulation and sound insulation layer is made of thermal insulation rock wool, and the thermal insulation rock wool is connected to the prestressed UHPC substrate through thermal insulation rock wool nails.

[0016] The present invention has achieved the following technical effects compared with the prior art:

[0017] The prefabricated prestressed UHPC curtain wall panel provided by the present invention includes a prestressed UHPC substrate, mounting parts installed near the upper and lower ends of the prestressed UHPC substrate, reinforcing ribs installed at the left and right ends of the prestressed UHPC substrate, and a groove body installed at the upper end of the prestressed UHPC substrate. Embedded sleeves are provided in the prestressed UHPC substrate at positions corresponding to the mounting parts and the reinforcing ribs. The mounting parts and the reinforcing ribs are both connected to the embedded sleeves. The mounting parts and the reinforcing ribs are both located on the back of the prestressed UHPC substrate. Therefore, no metal profile keels such as steel or aluminum alloy are required to support the inside or the back of the prestressed UHPC substrate. At the same time, because the prestressed UHPC substrate has a good exterior decoration effect, no other decoration is required after the overall installation is completed. A thermal insulation and sound insulation layer is installed between the two reinforcing ribs. The prestressed UHPC substrate is the main force-bearing support, with excellent fire prevention, waterproof, wind load resistance, heat preservation, sound insulation, sound absorption, impact resistance, easy installation, decoration integration and other functions. The exterior and interior installations are completed at the same time, and there is no need for maintenance in the later stage. Sealant strips are installed on the side of the reinforcing rib, as well as the side and lower end of the prestressed UHPC substrate, which can effectively prevent water and dust, and thus no additional waterproof layer is required. Multiple mounting hanging points are provided on one side of the reinforcing rib away from the prestressed UHPC substrate, forming a prefabricated curtain wall panel with perfect functions and easy installation, which has good economic performance. It can be prefabricated in a factory. Only hoisting operations are required at the installation site, improving the prefabrication level of the building and effectively reducing the carbon emissions of the building, meeting the trend of building development and the requirements of low carbonization. The raw materials in the production process are non-toxic, pollution-free, and non-radiative. After the building life is reached, it can be recycled and reused without polluting the environment. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is the front view of the prefabricated prestressed UHPC curtain wall panel provided by the present invention;

[0020] Figure 2 is the side view of the prefabricated prestressed UHPC curtain wall panel provided by the present invention;

[0021] Figure 3 is the top view of the prefabricated prestressed UHPC curtain wall panel provided by the present invention;

[0022] Figure 4 is Figure 1 the enlarged schematic view of part A in

[0023] Figure 5 is Figure 2 the enlarged schematic view of part B in

[0024] In the figure: 1 - prestressed UHPC base plate, 2 - mounting part, 3 - groove body, 4 - connecting part, 5 - mounting hanging point, 6 - embedded sleeve, 7 - reinforcing rib, 8 - aluminum alloy member, 9 - sealing strip, 10 - thermal insulation rock wool, 11 - calcium silicate board, 12 - drain hole, 13 - high-strength steel bar. Specific embodiments

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] The purpose of the present invention is to provide a prefabricated prestressed UHPC curtain wall panel to solve the technical problems of the existing UHPC curtain wall panel with single function and poor economy.

[0027] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0028] Such as Figures 1-5As shown in the figure, this embodiment provides an assembled prestressed UHPC curtain wall panel, which includes a prestressed UHPC base plate 1, mounting parts 2 installed near the upper and lower ends of the prestressed UHPC base plate 1, reinforcing ribs 7 installed at the left and right ends of the prestressed UHPC base plate 1, and a groove body 3 installed at the upper end of the prestressed UHPC base plate 1. Embedded sleeves 6 are provided in the prestressed UHPC base plate 1 at positions corresponding to the mounting parts 2 and the reinforcing ribs 7. The mounting parts 2 and the reinforcing ribs 7 are both connected to the embedded sleeves 6. The mounting parts 2 and the reinforcing ribs 7 are both located on the back of the prestressed UHPC base plate 1. Therefore, there is no need for metal section keels such as steel or aluminum alloy to support the inside or the back of the prestressed UHPC base plate. At the same time, because the prestressed UHPC base plate 1 has a good exterior decoration effect, no other decoration is required after the overall installation is completed. A thermal insulation and sound insulation layer is installed between the two reinforcing ribs 7. The prestressed UHPC base plate 1 of the prestress is used as the main force support, with excellent fire resistance, waterproofness, wind load resistance, heat preservation, sound insulation, sound absorption, impact resistance, easy installation, decoration integration and other functions. The exterior and interior installations are completed at the same time, and there is no need for maintenance in the later stage. Sealing strips 9 are installed on the sides of the reinforcing ribs 7, as well as on the sides and the lower end of the prestressed UHPC base plate 1, which can effectively prevent water and dust, and thus there is no need to separately set a waterproof layer. A plurality of mounting hanging points 5 are provided on the side of the reinforcing rib 7 away from the prestressed UHPC base plate 1, forming an assembled curtain wall panel with perfect functions and easy installation, having good economic performance, which can be prefabricated in the factory. Only hoisting operations are required at the installation site, improving the prefabrication level of the building and effectively reducing the carbon emissions of the building, meeting the trend of building development and the requirements of low carbonization. The raw materials in the production process are non-toxic, pollution-free, and radiation-free, and can be recycled and reused after the building life is reached without polluting the environment.

[0029] Specifically, the mounting part 2 is an L-shaped angle steel, square tube or U-shaped channel steel, and the two ends of the mounting part 2 extend to be flush with the left and right sides of the prestressed UHPC base plate 1. A plurality of external hexagon screws pass through the mounting part 2 to connect to the embedded sleeve 6 embedded in the prestressed UHPC base plate 1, improving the connection stability. However, the specific structure of the mounting part 2 in this embodiment is not limited to the above definition, and those skilled in the art can make adaptive modifications to its structural shape according to actual needs.

[0030] The trough body 3 includes a U-shaped trough and an extension plate, one end of the extension plate is connected to one side of the lower end surface of the U-shaped trough, and the other end of the extension plate extends away from the U-shaped trough. The lower end surface of the U-shaped trough is located at the upper end of the reinforcing rib 7, and the lower end surface of the extension plate is located at the upper end of the prestressed UHPC substrate 1. A drainage hole 12 is provided on one side of the U-shaped trough close to the extension plate, and the drainage hole 12 is used to discharge the collected rainwater. The thickness of the plate used in the trough body 3 is 1mm, and the drainage hole 12 is a rectangular hole, and there are two of them. The size of the drainage hole 12 is 20mm*50mm. In the actual processing process, those skilled in the art can make adaptive modifications to the above dimensions according to actual needs.

[0031] The assembled prestressed UHPC curtain wall panel provided in this embodiment also includes a connecting member 4, which is U-shaped and is slidably installed in the U-shaped groove. The connecting member 4 can slide until one end of the connecting member 4 is located in the U-shaped groove on the adjacent prestressed UHPC substrate 1, and then the U-shaped grooves on the two adjacent prestressed UHPC substrates 1 are connected by the connecting member 4, which can play a role in receiving rainwater.

[0032] The connecting piece 4 and the trough body 3 are both made of aluminum alloy material, and the connecting piece 4 can also be made of iron. The length of the connecting piece 4 is 100mm-150mm, and the technical personnel in this field can make adaptive changes to its length according to actual needs.

[0033] The reinforcing rib 7 is provided with avoidance grooves at positions corresponding to the mounting parts 2 , and the mounting parts 2 can be embedded in the avoidance grooves to ensure overall stable installation. The above design allows the reinforcing rib 7 to press the mounting parts 2 .

[0034] A high-strength steel bar 13 and an embedded part are arranged inside the reinforcing rib 7. The length direction of the high-strength steel bar 13 is consistent with the length direction of the reinforcing rib 7. The prestressed UHPC substrate 1 is provided with an embedded sleeve 6 at a position corresponding to the embedded part. The embedded part is connected to the embedded sleeve 6 by a screw rod, so as to realize the connection between the reinforcing rib 7 and the prestressed UHPC substrate 1 and improve the connection stability. Among them, the high-strength steel bar 13 can also be a prestressed steel wire.

[0035] The reinforcing rib 7 includes a transverse rib and a longitudinal rib, one end of the longitudinal rib is connected to one side of the longitudinal rib to form a reinforcing rib 7 with a T-shaped cross section, the upper and lower ends of the reinforcing rib 7 are respectively flush with the upper and lower ends of the prestressed UHPC substrate 1, and the reinforcing rib 7 is made of UHPC material. The reinforcing rib 7 in this embodiment can also be J-shaped or other shapes as long as it meets the use requirements.

[0036] On one side of the transverse ribs close to the adjacent prestressed UHPC substrate 1, on one side of the longitudinal ribs close to the prestressed UHPC substrate 1, as well as on the side edges and lower end of the prestressed UHPC substrate 1, aluminum alloy members 8 are installed, and on one side of each aluminum alloy member 8 close to the adjacent prestressed UHPC substrate 1, a sealant strip 9 is installed. In this way, an equal-pressure chamber and a three-seal system are formed between two adjacent prefabricated prestressed UHPC curtain wall panels, which can effectively prevent water and dust. Even if a small amount of water enters the cavity outside the equal-pressure chamber, it can flow along the groove body 3 to the bottom of the prefabricated prestressed UHPC curtain wall panel. And, after the adjacent prefabricated prestressed UHPC curtain wall panels are installed in place, the connecting piece 4 is pushed out of the groove body 3 and fixed in the gap between the two prefabricated prestressed UHPC curtain wall panels to collect the rainwater coming down from the upper equal-pressure chamber, drain it to the upper part of the U-shaped groove, and then discharge it outside the prefabricated prestressed UHPC curtain wall panel at the position of the drain hole 12.

[0037] The thermal insulation and sound insulation layer is made of thermal insulation rock wool 10, and the thermal insulation rock wool 10 is connected to the prestressed UHPC substrate 1 by thermal insulation rock wool 10 nails. The thermal insulation rock wool 10 is generally 50mm - 100mm thick, which is determined according to the thermal insulation requirements and sound insulation requirements of the building use area. The thermal insulation rock wool 10 is a Class A fireproof material, which plays the role of thermal insulation, sound insulation and sound absorption. A layer of calcium silicate board 11 for interior decoration with a thickness of about 5mm - 15mm is covered behind the thermal insulation rock wool 10, and a household latex paint is roller-coated behind the calcium silicate board 11. The calcium silicate board 11 is an interior wall board.

[0038] The upper, lower, left and right four corners of the prefabricated prestressed UHPC curtain wall panel are prefabricated with U-shaped installation hanging points 5, which can be directly hung with the screws and embedded parts reserved on site. The installation hanging points 5 have the adjustment functions of up and down, left and right, and front and back.

[0039] Through the above design, the water tightness, air tightness, wind pressure resistance, in-plane deformation, thermal insulation, sound insulation, sound absorption, impact resistance and other performances of the prefabricated prestressed UHPC curtain wall panel in this embodiment are improved and perfected. It is not only a decorative panel, but also has other functions of the prefabricated curtain wall panel, meeting the performance requirements of building curtain wall components. At the same time, the integration degree of the curtain wall panel is improved, realizing the factory prefabrication of curtain wall components and the prefabricated installation on the construction site, improving the prefabrication rate of the building; reducing the cost, improving the economy, and thus being able to increase the application rate in building walls.

[0040] In this specification, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A prefabricated prestressed UHPC curtain wall panel, characterized in that: It includes a prestressed UHPC substrate, mounting members installed near the upper and lower ends of the prestressed UHPC substrate, reinforcing ribs installed at the left and right ends of the prestressed UHPC substrate, and a trough installed at the upper end of the prestressed UHPC substrate. Embedded sleeves are provided in the prestressed UHPC substrate at positions corresponding to the mounting members and the reinforcing ribs. The mounting members and the reinforcing ribs are both connected to the embedded sleeves. The mounting members and the reinforcing ribs are both located on the back surface of the prestressed UHPC substrate, and a thermal insulation and sound insulation layer is installed between the two reinforcing ribs. Sealing rubber strips are installed on the side edges of the reinforcing ribs, as well as on the side edges and the lower end of the prestressed UHPC substrate. A plurality of mounting hanging points are provided on the side of the reinforcing rib away from the prestressed UHPC substrate; The trough includes a U-shaped trough and an extension plate. One end of the extension plate is connected to one side of the lower end surface of the U-shaped trough, and the other end of the extension plate extends in a direction away from the U-shaped trough. The lower end surface of the U-shaped trough is located above the upper end of the reinforcing rib, and the lower end surface of the extension plate is located above the upper end of the prestressed UHPC substrate. Drainage holes are provided on the side of the U-shaped trough close to the extension plate; High-strength steel bars and embedded parts are provided inside the reinforcing rib. The length direction of the high-strength steel bars is consistent with the length direction of the reinforcing rib. Embedded sleeves are provided in the prestressed UHPC substrate at positions corresponding to the embedded parts. The connection between the reinforcing rib and the prestressed UHPC substrate is realized by passing a screw through the embedded part and connecting it to the embedded sleeve.

2. The prefabricated prestressed UHPC curtain wall panel according to claim 1, characterized in that: The mounting member is an L-shaped angle steel, a square pipe or a U-shaped channel steel, and both ends of the mounting member extend to be flush with the left and right sides of the prestressed UHPC substrate.

3. The prefabricated prestressed UHPC curtain wall panel according to claim 1, wherein: It further includes a connecting member. The connecting member is U-shaped. The connecting member is slidably installed in the U-shaped trough, and the connecting member can slide until one end of the connecting member is located in the U-shaped trough on the adjacent prestressed UHPC substrate.

4. The prefabricated prestressed UHPC curtain wall panel according to claim 3, wherein: Both the connecting member and the trough are made of aluminum alloy material.

5. The prefabricated prestressed UHPC curtain wall panel according to claim 1, wherein: Avoidance grooves are provided in the reinforcing rib at positions corresponding to the mounting members, and the mounting members can be embedded in the avoidance grooves.

6. The prefabricated prestressed UHPC curtain wall panel according to claim 1, wherein: The reinforcing rib includes a transverse rib and a longitudinal rib. One end of the longitudinal rib is connected to one side of the longitudinal rib to form a reinforcing rib with a T-shaped cross-section. The upper and lower ends of the reinforcing rib are respectively flush with the upper and lower ends of the prestressed UHPC substrate. The reinforcing rib is made of UHPC material.

7. The prefabricated prestressed UHPC curtain wall panel according to claim 6, characterized in that: Aluminum alloy members are installed on the side of the transverse rib close to the adjacent prestressed UHPC substrate, on the side of the longitudinal rib close to the prestressed UHPC substrate, as well as on the side edges and the lower end of the prestressed UHPC substrate. And sealing rubber strips are installed on the side of each aluminum alloy member close to the adjacent prestressed UHPC substrate.

8. The prefabricated prestressed UHPC curtain wall panel according to claim 1, wherein: Calcium silicate boards are provided on the side of the thermal insulation and sound insulation layer away from the prestressed UHPC substrate. The thermal insulation and sound insulation layer is made of thermal insulation rock wool, and the thermal insulation rock wool is connected to the prestressed UHPC substrate through thermal insulation rock wool nails.

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