Double-layer skeleton-free uhpc curtain wall system and construction method thereof

Abstract

This invention relates to a double-layer frameless UHPC curtain wall system and its construction method, installed between building floor slabs. It includes: a first connector located at the lower part of the upper structural beam; a second connector located at the upper part of the lower structural beam; and a UHPC curtain wall. The UHPC curtain wall has a double-layer structure, with its upper end connected to the first connector and its lower end connected to the second connector. By connecting prefabricated UHPC components into a single unit to form the UHPC curtain wall, and then connecting the UHPC curtain wall to the building structural beams via the connectors, a frameless UHPC curtain wall system is formed. This achieves frameless installation of the curtain wall, avoiding problems such as difficulty in adjusting panels after the keel installation, excessively large panels, and beam distortion, which could compromise the flatness of the curtain wall and the uniformity between components.

Description

Technical Field

[0001] This invention relates to the field of curtain wall construction engineering, and specifically to a double-layer frameless UHPC curtain wall system and its construction method. Background Technology

[0002] Common double-layer curtain walls are generally double-layer glass curtain walls or double-layer curtain walls with an outer aluminum panel curtain wall and an inner glass curtain wall. Ultra-high performance concrete is a high-strength, high-toughness, low-porosity ultra-high-strength cement-based material that can be used to manufacture curtain wall grids and panels, as well as UHPC curtain walls.

[0003] Currently, conventional curtain wall mounting systems use panels suspended outside the columns and beams, secured with brackets and clamps. During installation, steel keels are commonly used for the base layer, with various fixing methods including bolts, expansion bolts, and anchor bolts. The installation process involves complex operations such as welding and anchoring. After the keel is installed, the panels are difficult to adjust; if the panels are too large, the beams may twist and deform, compromising the flatness of the curtain wall and the uniformity between components. Leveling the panels after installation is difficult, resulting in a complex process and low work efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a double-layer frameless UHPC curtain wall system and its construction method. This invention solves the problems of the existing system, which commonly uses steel keel for installation of the base layer, and uses various fixing methods such as bolts, expansion bolts, and anchor bolts. The installation process requires complex operations such as welding and anchoring. After the keel is installed, the panels are not easy to adjust. If the panels are too large, the beams will be twisted and deformed. The flatness of the curtain wall and the uniformity between components cannot be guaranteed. The leveling of the panels after installation is difficult, the process is complicated, and the work efficiency is low.

[0005] The technical solution to achieve the above objectives is:

[0006] This invention provides a double-layer frameless UHPC curtain wall system, installed between the upper and lower structural beams of a building, characterized in that the UHPC curtain wall system comprises:

[0007] The first connecting member installed on the upper structural beam;

[0008] The second connecting member installed on the lower structural beam; and

[0009] The UHPC curtain wall has a double-layer structure, with the upper end of the UHPC curtain wall connected to the first connector and the lower end of the UHPC curtain wall connected to the second connector.

[0010] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that the UHPC curtain wall comprises:

[0011] A plurality of integrally formed UHPC prefabricated component units, each UHPC prefabricated component unit comprising a double-layer UHPC panel, wherein the plurality of UHPC prefabricated component units are interconnected in the same plane, wherein the upper part of the upper UHPC prefabricated component unit is fixed to the first connector, and the lower part of the lower UHPC prefabricated component unit is fixed to the second connector.

[0012] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that the upper end face of the UHPC prefabricated component unit is provided with a first connecting part, and the lower end face of the UHPC prefabricated component unit is provided with a second connecting part corresponding to the first connecting part.

[0013] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that the first connector includes:

[0014] First web plate;

[0015] A first anchorage portion is connected to the first web plate, and the first anchorage portion is anchored within the upper structural beam;

[0016] A limiting plate is vertically disposed on the side of the first web plate opposite to the first anchoring part.

[0017] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that, in the UHPC prefabricated component unit located at the upper end of the UHPC curtain wall, one of the two UHPC panels is longer than the other, wherein the longer UHPC panel is located close to the outer side of the building and is fixedly connected to the limiting plate, and the shorter UHPC panel is fixedly connected to the upper structural beam by a clamp.

[0018] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that the second connector includes:

[0019] Second ventral plate;

[0020] A second anchorage portion is connected to the second web plate, and the second anchorage portion is anchored within the lower structural beam;

[0021] Two fixing plates are vertically disposed on the side of the second web plate opposite to the second anchoring part.

[0022] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that the UHPC prefabricated component unit located at the lower end of the UHPC curtain wall has its double-layer UHPC panels fixedly connected to the outside of the two fixed plates.

[0023] A further improvement of the double-layer frameless UHPC curtain wall system of the present invention is that an outer panel is provided on the outside of the structural beam, and the outer panel covers the node where the UHPC curtain wall and the structural beam are connected.

[0024] This invention also provides a construction method for a double-layer frameless UHPC curtain wall system, comprising the following steps:

[0025] Provide one-piece molded UHPC prefabricated component units, and connect the UHPC prefabricated component units end to end to form the UHPC curtain wall;

[0026] The first connector and the second connector are provided and anchored to the upper structural beam and the lower structural beam, respectively;

[0027] A portion of the upper end of one layer of UHPC panel in the UHPC curtain wall is cut off to create a misalignment with another layer of UHPC panel, thereby providing construction space.

[0028] A UHPC panel, cut from the UHPC curtain wall, is placed close to the inner side of the building structure. The bottom of the UHPC curtain wall is fixedly connected to the second connector, and the top of the UHPC curtain wall is fixedly connected to the first connector.

[0029] A further improvement of the construction method of the double-layer frameless UHPC curtain wall system of the present invention is that it further includes the following steps:

[0030] An outer panel is fixedly connected to the outside of the structural beam, so that the outer panel extends to cover the connection node between the structural beam and the UHPC curtain wall.

[0031] The beneficial effects of this invention are: by connecting UHPC prefabricated component units into a whole to form a UHPC curtain wall, and then connecting the UHPC curtain wall to the building structural beam through connectors, a frameless UHPC curtain wall system is formed, realizing the frameless installation of the curtain wall. This avoids the problems that after the keel is installed, the panels are not easy to adjust, the panels are too large, and the beams will be twisted and deformed, which cannot guarantee the flatness of the curtain wall and the uniformity between components. Attached Figure Description

[0032] Figure 1 This is a cross-sectional view of the overall double-layer frameless UHPC curtain wall system of the present invention.

[0033] Figure 2 This is a partial sectional view of the double-layer frameless UHPC curtain wall system of the present invention.

[0034] Figure 3 This is a cross-sectional view of the connection between the second connector and the UHPC curtain wall in the double-layer frameless UHPC curtain wall system of the present invention.

[0035] Figure 4This is a cross-sectional view of the connection between the first connector and the UHPC curtain wall in the double-layer frameless UHPC curtain wall system of the present invention.

[0036] Figure 5 This is a cross-sectional view of the connection between UHPC prefabricated component units in the double-layer frameless UHPC curtain wall system of the present invention.

[0037] Figure 6 This is a front view of the UHPC curtain wall in the double-layer frameless UHPC curtain wall system of the present invention.

[0038] Figure 7 This is a front view of the second connector in the double-layer frameless UHPC curtain wall system of the present invention.

[0039] Figure 8 This is a front view of the connection between the second connector and the angle iron in the double-layer frameless UHPC curtain wall system of the present invention.

[0040] 21-First connector, 22-First web, 23-First anchorage, 24-Limiting plate, 31-Second connector, 32-Second web, 33-Second anchorage, 34-Fixing plate, 41-UHPC curtain wall, 42-UHPC precast component unit, 421-UHPC panel, 424-Rubber pad, 43-Rock wool, 44-Angle iron, 45-C-channel steel, 46-Foam rod, 47-Sealant, 51-Outer panel, 52-Reinforcing rib, 53-Structural beam frame, 54-Insulating gasket, 55-Clamping component. Detailed Implementation

[0041] The present invention will be further described below with reference to specific embodiments.

[0042] This invention provides a double-layer frameless UHPC curtain wall system and its construction method. By connecting prefabricated UHPC components into a single unit to form a UHPC curtain wall, and then connecting the UHPC curtain wall to the building structure beams via connectors, a frameless UHPC curtain wall system is formed. This solves the problems of existing systems where steel keels are commonly used for installation, with various fixing methods such as bolts, expansion bolts, and anchor bolts. Installation requires complex operations such as welding and anchoring. After the keel is installed, the panels are difficult to adjust; if the panels are too large, the beams may twist and deform, failing to guarantee the flatness of the curtain wall and the uniformity between components. Leveling the panels after installation is also difficult, resulting in complex processes and low work efficiency.

[0043] See Figure 1 The image shows a cross-sectional view of the overall double-layer frameless UHPC curtain wall system of the present invention.

[0044] like Figure 1As shown, the double-layer frameless UHPC curtain wall system of the present invention is installed between building floor slabs and includes: a first connector 21, a second connector 31, and a UHPC curtain wall 41. The first connector 21 is located at the lower part of the upper structural beam, and the second connector 31 is located at the upper part of the lower structural beam. The UHPC curtain wall 41 is a double-layer structure. The upper end of the UHPC curtain wall 41 is connected to the first connector 21, and the lower end is connected to the second connector 31 to form a complete double-layer frameless UHPC curtain wall system. This achieves an installation method that does not require a keel, greatly reducing the difficulty of curtain wall construction.

[0045] See Figure 2 This image shows a partial cross-sectional view of the double-layer frameless UHPC curtain wall system of the present invention. (See also...) Figure 5 The image shows a cross-sectional view of the connection between UHPC prefabricated component units in the double-layer frameless UHPC curtain wall system of the present invention.

[0046] Combination Figure 2 and Figure 5 As shown, the UHPC curtain wall 41 in the double-layer frameless UHPC curtain wall system of the present invention includes several integrally formed UHPC prefabricated component units 42. Each UHPC prefabricated component unit 42 includes a double-layer UHPC panel 421, with rock wool 43 filling between the two UHPC panels 421 to improve the thermal insulation performance of the UHPC curtain wall 41. Several UHPC prefabricated component units 42 are connected to each other in the same plane to form a whole. The upper part of the UHPC prefabricated component unit 42 located at the upper end of the whole is fixedly connected to the first connector 21, and the lower part of the UHPC prefabricated component unit 42 located at the lower end of the whole is fixedly connected to the second connector 31. It is assembled.

[0047] Furthermore, such as Figure 5 As shown, the upper end face of the UHPC prefabricated component unit 42 is provided with a first connecting part, and the lower end face of the UHPC prefabricated component unit 42 is provided with a second connecting part corresponding to the first connecting part. By connecting the first connecting part of one UHPC prefabricated component unit 42 with the second connecting part of another UHPC prefabricated component unit 42, and by connecting several UHPC prefabricated component units 42 in sequence, a UHPC curtain wall 41 can be formed.

[0048] Furthermore, the first connecting part is a recessed part on the upper surface of the UHPC prefabricated component unit 42, with the recessed part located in the middle position, while the second connecting part is a corresponding protrusion on the lower surface of the UHPC prefabricated component unit 42, with the protrusion also located in the middle position. A rubber pad 424 is provided in the recessed part to provide shock absorption between the UHPC prefabricated component units 42. Foam rods 46 are provided at the two edges where the two UHPC prefabricated component units 42 are connected, and they are sealed with sealant 47. This provides waterproof sealing treatment for the UHPC prefabricated component unit 42, preventing water leakage from the UHPC curtain wall 41 structure.

[0049] See Figure 2 This image shows a partial cross-sectional view of the double-layer frameless UHPC curtain wall system of the present invention. (See also...) Figure 3 The image shows a cross-sectional view of the connection between the second connector and the UHPC curtain wall in the double-layer frameless UHPC curtain wall system of the present invention.

[0050] Combination Figure 2 and Figure 3 As shown, the second connector 31 in the double-layer frameless UHPC curtain wall system of the present invention includes: a second web plate 32, a second anchoring part 33, and a fixing plate 34.

[0051] The second anchoring part 33 is connected to the second web plate 32 and anchored in the lower structural beam. Two fixing plates 34 are vertically arranged on the second web plate 32 and on the opposite side of the second anchoring part 33, realizing the anchoring of the second connector 31 and the function of connecting with the UHPC curtain wall 41. Subsequently, the UHPC curtain wall 41 can be connected to the fixing plates 34. The double-layer UHPC panels 421 of the UHPC curtain wall 41 are respectively arranged on the outside of the two fixing plates 34 to clamp the two fixing plates 34, and then fixed by bolts to realize the fixation of the lower end of the UHPC curtain wall 41.

[0052] Preferably, a rubber pad 424 is provided between the fixing plate 34 and the UHPC plate 421 for cushioning.

[0053] Furthermore, an angle iron 44 is installed on the outer side of the second connector 31 near the building, with the angle iron 44 facing inward, so that a gap is formed between the angle iron 44 and the UHPC panel 421 near the outer side. A foam rod 46 is installed between the bottom of the UHPC panel 421 and the angle iron 44, and then sealant 47 is filled into the gap to achieve waterproofing between the bottom of the UHPC curtain wall 41 and the outside.

[0054] Furthermore, an outer plate 51 is fixed to the outside of the building structural beam to protect the building structural beam and prevent it from directly contacting the outside environment.

[0055] A structural beam frame 53 is provided between the building structural beam and the outer plate 51. The structural beam frame 53 is fixed to the building structural beam by bolts and is connected to the reinforcing ribs 52 on the outer plate 51 by bolts.

[0056] In a preferred embodiment of the double-layer frameless UHPC curtain wall system of the present invention, the top of the outer panel 51 is also hung on a wing plate vertically arranged by the angle iron 44, and an insulating gasket 54 is preferably provided between the angle iron 44 and the outer panel 51, and then the sealant 47 is fully poured in.

[0057] In another preferred embodiment of the double-layer frameless UHPC curtain wall system of the present invention, a C-shaped channel steel 45 is provided on the inner side of the second connector 31 near the building. The opening of the C-shaped channel steel 45 faces outward, and the left end of the C-shaped channel steel 45 is flush with the left end of the second connector 31. The left end is connected to the building structural plate. The bolts fixedly connected to the UHPC plate 421 near the inner side of the building are covered in the C-shaped opening of the C-shaped channel steel 45. A foam rod 46 is provided between the upper wing plate of the C-shaped channel steel 45 and the UHPC plate 421, and then sealant 47 is filled to achieve waterproofing.

[0058] Preferably, a right-angle member is provided between the C-shaped channel steel 45 and the building structural plate to keep the connection flat.

[0059] See Figure 4 The image shows a cross-sectional view of the connection between the first connector and the UHPC curtain wall in the double-layer frameless UHPC curtain wall system of the present invention.

[0060] Combination Figure 2 and Figure 4 As shown, the first connector 21 in the double-layer frameless UHPC curtain wall system of the present invention includes: a first web plate 22, a first anchoring part 23, and a limiting plate 24.

[0061] The first anchoring part 23 is connected to the first web plate 22 and anchored in the upper structural beam. The limiting plate 24 is vertically arranged on the first web plate 22 and on the opposite side of the first anchoring part 23, realizing the anchoring of the first connector 21 and the function of connecting with the UHPC curtain wall 41. Subsequently, the UHPC curtain wall 41 can be connected to the limiting plate 24 to realize the fixation of the upper end of the UHPC curtain wall 41.

[0062] Furthermore, in the UHPC prefabricated component unit 42 located at the upper end of the UHPC curtain wall 41, one of the double-layer UHPC panels 421 is slightly longer than the other UHPC panel 421. The longer UHPC panel 421 is set closer to the outer side of the building, and the shorter UHPC panel 421 is set closer to the inner side of the building. This design is so that during construction, foam rods 46 and sealant 47 can be filled between the outer UHPC panel 421 and the first web 22 for waterproofing. If the inner UHPC panel 421 is also set to the same length, it will affect the normal waterproofing treatment of the outer UHPC panel 421.

[0063] Furthermore, after the waterproofing treatment between the outer UHPC board 421 and the first web 22 is completed, rock wool 43 is used to seal the inner side of the outer UHPC board 421 again to enhance the thermal insulation performance at the connection node.

[0064] Similarly, an outer plate 51 is fixed to the outside of the building structural beam to protect the building structural beam and prevent it from directly contacting the outside environment.

[0065] A structural beam frame 53 is provided between the building structural beam and the outer plate 51. The structural beam frame 53 is fixed to the building structural beam by bolts and is connected to the reinforcing ribs 52 on the outer plate 51 by bolts.

[0066] In a preferred embodiment of the double-layer frameless UHPC curtain wall system of the present invention, the outer panel 51 is bent inward at the structural beam frame 53, and then bent downward at a distance of 1 cm from the outer UHPC panel 421 to form a vertical surface, which serves as the drip line of the outer panel, so that rainwater can drip off as quickly as it flows down the outer panel 51, while maintaining a distance from the UHPC curtain wall 41 to avoid water damage to the wall.

[0067] In another preferred embodiment of the double-layer frameless UHPC curtain wall system of the present invention, an angle iron 44 is fixedly connected to the building structure beam inside the first connector 21 by bolts. The angle iron 44 has an inward opening. One side wing is connected to the building structure beam by bolts, and the other side wing is connected to another angle iron 44 with an upward opening by bolts. An outer plate 51 is hung on the horizontal wing of the angle iron 44 with an upward opening. The lower end of the outer plate 51 is located above the inner UHPC panel 421. The lower end of the outer plate 51 is connected to the upper end of the inner UHPC panel 421 by a clamping member 55. The above structure seals the opening of the inner UHPC panel 421 due to its slightly shorter length, so that the two UHPC panels 421 are isolated from both the outside and inside of the building, ensuring the durability of the UHPC panel 421 and improving the overall stability of the UHPC curtain wall 41.

[0068] The upper end of the aforementioned clamping member 55 is connected to the outer plate 51, and the lower end forms a clamping part to clamp the inner UHPC board 421.

[0069] Furthermore, a foam rod 46 is provided at the connection between the outer panel 51 and the angle iron 44, and sealant 47 is filled in.

[0070] See Figure 7 The image shows a front view of the second connector in the double-layer frameless UHPC curtain wall system of the present invention.

[0071] like Figure 7 As shown, in the double-layer frameless UHPC curtain wall system of the present invention, the fixing plate 34 of the second connector is welded and fixed to the second web plate 32, and the fixing plate 34 is provided with bolt holes for bolt fixing to the UHPC panel 421.

[0072] See Figure 8 The image shows a front view of the connection between the second connector and the angle iron in the double-layer frameless UHPC curtain wall system of the present invention.

[0073] like Figure 8 As shown, in the double-layer frameless UHPC curtain wall system of the present invention, the angle iron 44 is arranged along the entire length of the UHPC panel 421, while the second connector 31 is arranged at intervals. The angle iron 44 forms a gap with the structural panel in the empty section of the second connector 31. Preferably, the gap is filled with dry hard cement waterproof mortar to ensure that the angle iron 44 has sufficient support and achieves the waterproof function.

[0074] See Figure 6 The image shows a front view of the UHPC curtain wall in the double-layer frameless UHPC curtain wall system of the present invention.

[0075] like Figure 6 As shown, threaded holes are provided on the upper UHPC prefabricated component unit 42 of the UHPC curtain wall 41 for bolt fixing, while UHPC prefabricated component unit 42 at the lower end of the UHPC curtain wall 41 is provided with a U-shaped opening, which is clamped on the bolt on the second connector 31, and a rubber pad 424 is provided at the bottom of the U-shaped opening to improve the durability of the UHPC panel 421.

[0076] The construction method of the double-layer frameless UHPC curtain wall system of the present invention will be further explained next.

[0077] Provide one-piece molded UHPC prefabricated component units 42, and connect the UHPC prefabricated component units end to end to form UHPC curtain wall 41.

[0078] A first connector 21 and a second connector 31 are provided. The first connector 21 is anchored to the lower part of the upper structural beam, and the second connector 31 is anchored to the upper part of the lower structural beam, in preparation for the fixed connection of the UHPC curtain wall 41.

[0079] A portion of the upper end of one layer of UHPC panel 421 of the UHPC curtain wall 41 is cut off to create a misalignment with another layer of UHPC panel 421 to provide construction space.

[0080] One layer of UHPC panel 421, cut from the UHPC curtain wall 41, is placed close to the inner side of the building structure, and another layer of UHPC panel 421 is placed close to the outer side of the building structure. The bottom of the UHPC curtain wall 41 is placed on the bolts of the second connector 31, and the top of the UHPC curtain wall 41 is placed against the limiting plate 24 of the first connector 21. The bolts on the second connector 31 and the first connector 21 are then tightened to fix the UHPC curtain wall 41.

[0081] Preferably, a rubber pad 424 is provided between the fixing plate 34 and the UHPC plate 421.

[0082] Furthermore, a rubber pad 424 can be provided between the limiting plate 24 and the UHPC plate 421.

[0083] In the construction method of the double-layer frameless UHPC curtain wall system of the present invention, the structural beam frame 53 is bolted to the outside of the structural beam, and an angle iron 44 is set on the second connector 31 near the outside of the building structure. The outer plate 51 is connected to the structural beam frame 53. The upper end of the outer plate 51 is hung on the wing plate vertically set by the angle iron 44, and the lower end is connected to the lower part of the upper structural beam of the lower layer. It is bent inward and extended to 1 cm away from the outer UHPC plate 421, and then bent downward to form a vertical surface, so that rainwater flows down through the outer plate 51 to the vertical surface and drips down quickly, and also avoids the wall from being urinated on.

[0084] Furthermore, a foam rod 46 is placed between the angle iron 44 and the outer UHPC board 421, and then sealant 47 is filled to complete the waterproofing treatment.

[0085] A C-shaped channel steel 45 is installed on the inner side of the UHPC plate on the second connector 31 near the inner side to surround the bolt. A right-angle piece is then installed on the C-shaped channel steel 45 to keep the node level with the building floor slab.

[0086] After the bolts between the upper end of the UHPC curtain wall 41 and the first connector 21 are tightened, a foam rod 46 is placed between the outer UHPC panel and the first connector 21, and sealant 47 is filled to achieve waterproofing.

[0087] Furthermore, rock wool is used to seal the inner side of the outer UHPC board to improve the thermal insulation performance at the joint.

[0088] An angle iron 44 is fixedly connected to the top plate of the building structure at the position inside the first connector 21. The angle iron 44 has an inward opening. One side wing is bolted to the building structure beam, and the other side wing is bolted to another angle iron 44 with an upward opening. An outer plate 51 is hung on the horizontal wing of the upward-opening angle iron 44. The lower end of the outer plate 51 is located above the inner UHPC board 421. The lower end of the outer plate 51 is connected to the upper end of the inner UHPC board 421 through a clamp 55. The above structure seals the opening of the inner UHPC board 421 due to its slightly shorter length, so that the two UHPC boards 421 are isolated from both the outside and inside of the building.

[0089] Finally, a foam rod 46 is placed at the junction of the two angle irons 44, and sealant 47 is filled to achieve waterproofing.

[0090] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A double-layered unframed UHPC curtain wall system, disposed between the upper and lower structural beams of a building, characterized in that, The UHPC curtain wall system includes: The first connecting member installed on the upper structural beam; The second connecting member installed on the lower structural beam; and The UHPC curtain wall has a double-layer structure, with the upper end of the UHPC curtain wall connected to the first connector and the lower end of the UHPC curtain wall connected to the second connector. The UHPC curtain wall includes: a plurality of integrally formed UHPC prefabricated component units, each UHPC prefabricated component unit including a double-layer UHPC panel, and the plurality of UHPC prefabricated component units are interconnected in the same plane; The first connecting member includes: a first web; A first anchorage portion is connected to the first web plate, and the first anchorage portion is anchored within the upper structural beam; A limiting plate is vertically disposed on the side of the first web plate opposite to the first anchoring part; The UHPC prefabricated component unit located at the upper end of the UHPC curtain wall has one UHPC panel that is longer than the other UHPC panel in its double-layer UHPC panel. The longer UHPC panel is located closer to the outer side of the building and is fixedly connected to the limiting plate. The space between the outer UHPC board and the first web plate is filled with foam rods and sealant for waterproofing. After the waterproofing treatment is completed, the inside of the outer UHPC board is sealed with rock wool again; An angle iron is fixedly connected to the building structure beam inside the first connector by bolts. The angle iron has an inward opening. One side wing plate is connected to the building structure beam by bolts, and the other side wing plate is connected to another angle iron with an upward opening by bolts. An outer plate is hung on the horizontal wing plate of the angle iron with an upward opening. The lower end of the outer plate is located above the inner UHPC board, and the lower end of the outer plate is connected to the upper end of the inner UHPC board by a clamping member.

2. The dual-layer, un-reinforced UHPC curtain wall system of claim 1, wherein, The second connector includes: Second ventral plate; A second anchorage portion is connected to the second web plate, and the second anchorage portion is anchored within the lower structural beam; Two fixing plates are vertically disposed on the side of the second web plate opposite to the second anchoring part.

3. The dual-layer, un-reinforced UHPC curtain wall system of claim 2, wherein, The UHPC prefabricated component unit located at the lower end of the UHPC curtain wall has its double-layer UHPC panels fixedly connected to the outside of the two fixed plates.

4. The dual-layer, un-reinforced UHPC curtain wall system of claim 3, wherein, An outer panel is provided on the outside of the structural beam, and the outer panel covers the node where the UHPC curtain wall connects to the structural beam.

5. A method of constructing a double-layered, non-ribbed UHPC curtain wall system according to claim 1, characterized in that, Includes the following steps: Provide one-piece molded UHPC prefabricated component units, and connect the UHPC prefabricated component units end to end to form the UHPC curtain wall; The first connector and the second connector are provided and anchored to the upper structural beam and the lower structural beam, respectively; A portion of the upper end of one layer of UHPC panel in the UHPC curtain wall is cut off to create a misalignment with another layer of UHPC panel, thereby providing construction space. A UHPC panel cut from the UHPC curtain wall is placed close to the inner side of the structural beam. The bottom of the UHPC curtain wall is fixedly connected to the second connector, and the top of the UHPC curtain wall is fixedly connected to the first connector.

6. The construction method of a two-layer, non-ribbed UHPC curtain wall system according to claim 5, characterized in that, It also includes the following steps: The outer plate is fixedly connected outside the structural beam, and the outer plate extends to cover the connecting joint of the structural beam and the UHPC curtain wall.

Images