A metal roof cornice aluminum veneer expansion joint system

Abstract

The present invention discloses a metal roof eaves aluminum veneer expansion joint system, comprising a main structure I, a main structure II, and an expansion joint I formed therebetween; an eaves keel bracket I is provided on the main structure I, and an eaves keel bracket II is provided on the main structure II; insulation panels are laid on the tops of the eaves keel brackets I and II, respectively, and the insulation panels are disconnected from the eaves keel bracket I to form a expansion gap; a reinforcement insulation panel is provided below the expansion gap, the width of which is at least three times the width of the expansion joint I; an aluminum veneer keel bracket I is installed on the top of the eaves keel bracket I, and an aluminum veneer keel bracket II is installed on the top of the eaves keel bracket II, forming a disconnected expansion joint II between the two brackets; aluminum veneers are laid on the outer sides of the two brackets, the expansion joints I and II are staggered, and a retractable waterproof panel is installed at the expansion joint II. The present invention solves the functional problems of waterproofing, heat preservation, and reinforcement of the eaves aluminum veneer, and has a simple structure and low cost.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum veneer panels, and in particular to an aluminum veneer expansion joint system for a metal roof cornice. Background Art

[0002] Metal roofing began to be used in my country in the late 1970s. After more than 40 years of development, it has become widely adopted in various industrial, commercial, and residential buildings. Buildings with metal roofs can now be found everywhere in my country, such as convention and exhibition centers, stadiums, and large-scale public transportation facilities. Metal roofing has become a vital and essential component of architecture. Compared to traditional concrete and tile roofs, metal roofing offers advantages such as light weight, excellent plasticity, and strong ability to adapt to deformation. After long-term application, architects have increasingly stringent requirements for building shape and performance.

[0003] In the metal roof buildings described above, factors such as temperature fluctuations, uneven foundation settlement, and earthquakes can generate additional stress and deformation within the structure. Improper handling can damage the building, leading to cracks and even collapse, compromising its usability and safety. Solutions include: strengthening the building's integrity to ensure sufficient strength and rigidity to overcome these destructive stresses without causing damage; or pre-splitting the structure at deformation-sensitive locations, leaving gaps to ensure sufficient room for deformation within these gaps without causing damage. These pre-specified gaps that vertically divide the building are called expansion joints.

[0004] For roof eaves materials, most of them are constructed with aluminum veneers (decorative panels). At the deformation joints of the building, the aluminum veneers must also follow the deformation joints of the building to make deformation joints, so as to adapt to the overall deformation of the building and avoid damage to the aluminum veneers when the building is deformed. In addition, the roof itself is a waterproof structure, so the waterproof requirements at the deformation joints of the aluminum veneers are extremely high. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a metal roof eaves aluminum veneer deformation joint system so that the aluminum veneer can adapt to the deformation of the building and avoid being damaged. At the same time, the waterproof requirements of the aluminum veneer deformation joints must be guaranteed to achieve continuous and enhanced thermal insulation.

[0006] The present invention adopts the following technical solutions:

[0007] A metal roof eaves aluminum veneer expansion joint system, the system includes an independent main structure I and a main structure II, a expansion joint I is formed between the main structure I and the main structure II; an eaves keel bracket I is provided on the main structure I, and an eaves keel bracket II is provided on the main structure II; the tops of the eaves keel brackets I and II are respectively paved with insulation boards, and the insulation boards are disconnected from the eaves keel bracket I to form a expansion gap, and the width D1 of the expansion gap is greater than or equal to the width D of the expansion joint I; a reinforcing insulation board is further provided below the expansion gap. The width D2 of the reinforced insulation board is at least 3 times the width D of the deformation joint I; the top of the eaves keel bracket I is installed with an upward extending aluminum veneer keel bracket I, and the top of the eaves keel bracket II is installed with an upward extending aluminum veneer keel bracket II. A disconnected deformation joint II is formed between the aluminum veneer keel bracket I and the aluminum veneer keel bracket II. The outer sides of the aluminum veneer keel bracket I and the aluminum veneer keel bracket II are respectively paved with aluminum veneers. The deformation joint I and the deformation joint II are staggered, and a retractable waterproof board is installed at the deformation joint II.

[0008] Furthermore, an aluminum veneer keel bracket III connected to the aluminum veneer keel bracket II is provided above the deformation joint II, and the outer sides of the aluminum veneer keel bracket III and the aluminum veneer keel bracket II are paved with the aluminum veneer, and the aluminum veneer keel bracket III completely covers the deformation joint II. A waterproof aluminum plate is installed on the aluminum veneer keel bracket I located in the coverage area of ​​the aluminum veneer keel bracket III, and the junction of the waterproof aluminum plate and the aluminum veneer is connected by full-length aluminum welding, and a full-length rubber waterstop is connected between the end of the aluminum veneer on the aluminum veneer keel bracket III and the waterproof aluminum plate.

[0009] Furthermore, the waterproof aluminum plate is higher than the aluminum veneer connected to it, and the cross-sectional width of the rubber waterstop is at least the sum of the distance between the waterproof aluminum plate and the end of the aluminum veneer on the aluminum veneer keel bracket III and the width D of the deformation joint I.

[0010] Preferably, the aluminum veneer keel bracket II includes a main keel I, a main keel II, a main keel III and a secondary keel, the main keel I is vertically fixed on the eaves keel bracket II, the main keel II is horizontally installed on the top of the main keel I, the main keel III is close to the deformation joint II, one end of the secondary keel is fixedly connected to the main keel III, and the other end of the secondary keel is hinged to the main keel II through a steel plate connector.

[0011] Preferably, the steel plate connector is L-shaped, one side of which is fixedly connected to the main keel II, and the other side of which is provided with at least two transverse oblong holes arranged along the length direction of the secondary keel, and the end of the secondary keel is connected to the transverse oblong holes on the steel plate connector by bolts.

[0012] Preferably, a full-length V-shaped or wavy telescopic structure is provided in the middle part of the width direction of the waterproof board, which includes a waterproof membrane and a steel plate edge plate. The waterproof membrane is bonded to the steel plate edge plate, and the two ends of the waterproof board are respectively fixed to the aluminum single board keel bracket I and the aluminum single board keel bracket II by screws.

[0013] Preferably, the reinforced insulation board is arranged symmetrically with respect to the deformation gap, and is installed in a groove structure formed by a metal frame. The metal frame is fixed on the eaves keel bracket I, and a steel mesh is laid around the bottom and inner wall of the groove structure. The reinforced insulation board is an insulation cotton with aluminum foil on both sides, which is densely filled in the groove structure.

[0014] Furthermore, the eaves keel bracket I and the eaves keel bracket II are fully covered with steel wire mesh, the steel wire mesh is disconnected at the deformation gap, the insulation board is insulation cotton with aluminum foil on both sides, and the insulation board is laid on the steel wire mesh.

[0015] Preferably, the overlap length formed by the insulation board and the reinforced insulation board is greater than or equal to the width D of the deformation joint I.

[0016] The technical solution of the present invention has the following advantages:

[0017] A. The present invention is constructed through node structures. On the one hand, the aluminum veneer is rooted on the separate eaves keel brackets of the main structure I and the main structure II to adapt to the deformation of the building; secondly, the waterproofing problem at the deformation joint II (disconnection) of the aluminum veneer is solved by combining a flexible water stop and a waterproof aluminum plate; and by adding a reinforced insulation board, it is ensured that the insulation here is continuous and strengthened while the building is deformed, thereby solving the three important functional problems of deformation, waterproofing and insulation of the eaves aluminum veneer, simplifying complex problems. These node processing methods are simple in process, shorten the construction period, and have a relatively low cost, reducing construction costs and increasing project profits.

[0018] B. The present invention uses deformation joints I, II and deformation gaps formed by disconnecting the insulation board. The two deformation joints and the deformation gap are artificially set with appropriate widths to prevent the building from deformation under the influence of external factors, resulting in cracking or even damage. The gaps are structurally processed to meet the requirements of use and aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention, the following will briefly introduce the drawings required for use in the specific embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a construction node diagram of the deformation joint of the aluminum veneer at the metal roof cornice provided by the present invention;

[0021] Figure 2 for Figure 1 The connection structure diagram of the metal frame, reinforced insulation board and eaves keel bracket I;

[0022] Figure 3 for Figure 1 Detailed connection drawing of waterproof aluminum plate and aluminum veneer;

[0023] Figure 4 for Figure 1 Schematic diagram of the steel plate connector structure.

[0024] The following are marked in the figure:

[0025] 1-Silicone weatherproof sealant and foam rod; 2-Aluminum veneer

[0026] 3a-Insulation board, 3b-Reinforced insulation board

[0027] 4-Wire Mesh

[0028] 5a-Eaves keel bracket I, 5b-Eaves keel bracket II

[0029] 6-metal frame, 6a-groove structure

[0030] 7a-Aluminum veneer keel bracket I, 7b-Aluminum veneer keel bracket II, 7b1-Main keel I, 7b2-Main keel II, 7b3-Main keel III, 7b4-Secondary keel; 7c-Aluminum veneer keel bracket III

[0031] 8-steel plate connector, 81-horizontal oblong hole

[0032] 9-bolt

[0033] 10- waterproof board, 10a- telescopic structure, 101- waterproof membrane, 102- steel plate edge board

[0034] 11a-Main Structure I, 11b-Main Structure II

[0035] 12-waterproof aluminum plate; 13-aluminum welding; 14-rubber waterstop; 15-screws; 16-fixing angle bracket; 17-anti-corrosion gasket;

[0036] a-deformation joint I; b-deformation joint II; c-deformation gap. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] like Figure 1As shown, the present invention provides a metal roof eaves aluminum single plate deformation joint system, comprising an independent main structure I11a and a main structure II11b which are separately arranged, a deformation joint Ia is formed between the main structure I11a and the main structure II11b to adapt to the deformation of the building; an eaves keel bracket I5a is provided on the main structure I11a, and an eaves keel bracket II5b is provided on the main structure II11b, and insulation boards 3a are laid on the tops of the eaves keel bracket I5a and the eaves keel bracket II5b respectively, and the insulation board 3a is disconnected on the eaves keel bracket I5a to form a deformation gap c, and the width D1 of the deformation gap c is greater than or equal to the width D of the deformation joint Ia; a reinforced insulation board 3b is further provided below the deformation gap c, and the width D2 of the reinforced insulation board 3b is at least 3 times the width D of the deformation joint Ia, so that the reinforced insulation board 3b forms with the insulation boards on both sides of the deformation gap c Effective overlap, the overlap length is preferably greater than the width D of the deformation joint I; the top of the eaves keel bracket I5a is installed with an upward extending aluminum veneer keel bracket I7a, and the top of the eaves keel bracket II5b is installed with an upward extending aluminum veneer keel bracket II7b, and a disconnected deformation joint IIb is formed between the aluminum veneer keel bracket I7a and the aluminum veneer keel bracket II7b. The outer sides of the aluminum veneer keel bracket I7a and the aluminum veneer keel bracket II7b are respectively covered with aluminum veneers 2, and the aluminum veneer keel bracket I7a and the aluminum veneer keel bracket II7b are preferably fixed to the aluminum veneer keel bracket I7a and the aluminum veneer keel bracket II7b by screws 15, fixed angle codes 16 and anti-corrosion gaskets 17; the deformation joint Ia and the deformation joint IIb are staggered, and the width of the gap formed by the two is consistent. At the same time, a retractable waterproof board 10 is installed at the deformation joint IIb to prevent rainwater from entering the deformation joint IIb. The two deformation joints are staggered to avoid the formation of upper and lower through seams here. The deformation joint IIb is close to the deformation gap. At the same time, since a reinforced insulation board 3b is set at the deformation gap c, the insulation here is further strengthened to avoid cold leakage.

[0041] In order to better improve the waterproof performance of the deformation joint IIb, the present invention also provides an aluminum veneer keel bracket III7c connected to the aluminum veneer keel bracket II7b above the deformation joint IIb, and the outer sides of the aluminum veneer keel bracket III7c and the aluminum veneer keel bracket II7b are paved with aluminum veneer 2. The aluminum veneer 2 here is preferably fixed to the aluminum veneer keel bracket I7c by screws 15, fixed angle codes 16 and anti-corrosion gaskets 17. The aluminum veneer keel bracket III7c completely covers the deformation joint IIb, and a waterproof aluminum plate 12 is installed on the aluminum veneer keel bracket I7a located in the coverage area of ​​the aluminum veneer keel bracket III7c. The junction of the waterproof aluminum plate 12 and the aluminum veneer 2 is connected by a full-length aluminum weld 13 to ensure that there is no gap between the two, thereby achieving the waterproof purpose. Figure 3A full-length rubber waterstop 14 is connected between the end of the aluminum veneer 2 and the waterproof aluminum plate 12 on the aluminum veneer keel bracket III7c, which ensures that the waterproof continuity is met while deforming with the building.

[0042] The rubber waterstop 14 here is preferably an EPDM rubber waterstop, which is set to be full length in the length direction and has a cross-sectional width equal to the distance between the aluminum veneers 2 on both sides (i.e., the distance between the waterproof aluminum plate 12 and the ends of the aluminum veneer 2 on the aluminum veneer keel bracket III7c) plus the width D of the deformation joint Ia, to ensure that the rubber waterstop 14 will not be pulled apart when the building is at its maximum deformation. The EPDM rubber waterstop 14 is a flexible material. When the two ends are fixed, a rigid gasket needs to be added above the fixed point, and the intersection of the rubber waterstop 14 and the keel is fully coated with silicone weather-resistant sealant to ensure the sealing performance of the connection between the two ends of the rubber waterstop. The waterproof aluminum plate 12 used in the figure is higher than the upper surface of the aluminum veneer 2 intersecting with it to meet the waterproof requirements.

[0043] The aluminum veneer keel bracket II7b used in the present invention includes a main keel I7b1, a main keel II7b2, a main keel III7b3, and a secondary keel 7b4. The main keel I7b1 is vertically fixed to the transverse keel of the cornice keel bracket II5b. The main keel II7b2 is horizontally installed on the top of the main keel I7b1. The main keel III7b3 is located near the expansion joint IIb. One end of the secondary keel 7b4 is fixedly connected to the main keel III7b3, and the other end of the secondary keel 7b4 is hinged to the main keel II7b2 via a steel plate connector 8. Of course, the aluminum veneer keel bracket I7a also includes the above-mentioned components, which will not be repeated here.

[0044] The above-mentioned steel plate connecting member 8 has the following structure: Figure 4 As shown, the steel plate connector 8 is L-shaped, with one side fixedly connected to the main keel II7b2. Its other side is provided with at least two transverse oblong holes 81 arranged along the length of the secondary keel 7b4, preferably arranged in parallel. The ends of the secondary keel 7b4 are connected to the transverse oblong holes 81 in the steel plate connector 8 by bolts 9. This creates a structure in which the secondary keel 7b4 is fixed at one end and hinged at the other end. This allows the secondary keel 7b4 to release thermal stress along its length, preventing damage to the keel and the aluminum veneer above.

[0045] In addition, if Figure 1As shown, a full-length V-shaped or wavy telescopic structure 10a is provided in the middle of the width direction of the waterproof board 10, which includes a waterproof coil 101 and a steel plate trimming plate 102. The waterproof coil 101 is bonded to the steel plate trimming plate 102, and the two ends of the waterproof board 10 are respectively fixed to the aluminum single panel keel bracket I7a and the aluminum single panel keel bracket II7b by screws. The waterproof coil 101 here is preferably a self-adhesive rubber asphalt waterproof coil. The waterproof coil 101 is bonded to the steel plate trimming plate 102, and the two ends of the steel plate trimming plate 102 are fixed with self-drilling screws to ensure that it can adapt to the free deformation of the building while meeting the requirements of waterproof continuity. Then, the aluminum single panel 2 is installed, and a foam rod and silicone weatherproof sealant 1 are installed at the dividing point of the aluminum single panel 2 to ensure the waterproof performance of the aluminum single panel 2.

[0046] The steel plate edge trimming plate 102 is preferably in a "V" shape, so that the steel plate edge trimming plate 102 can adapt to the relative deformation of the building while ensuring its edge sealing and waterproofing, and will not be damaged; and the steel plate edge trimming plate 102 has good rigidity, supporting the self-adhesive rubber asphalt waterproof membrane above it and ensuring its integrity and waterproof continuity.

[0047] Combine Figure 1 and Figure 2 As shown, the reinforced insulation board 3b here is arranged symmetrically with the deformation gap c, and is installed in a groove structure 6a formed by a metal frame 6. The metal frame 6 is fixed on the eaves keel bracket I5a, and a steel mesh 4 is laid around the bottom and inner wall of the groove structure 6a. The reinforced insulation board 3b is an insulation cotton with aluminum foil on both sides, which is densely filled in the groove structure 6a.

[0048] The metal frame 6 here preferably uses L50*4mm angle steel, and the longitudinal internal clear distance of the angle steel is not less than 3 times the width of the deformation joint I (≥3D). The angle steel is formed into an inward-concave rectangular shape, and then a steel mesh 4 is laid around the inner wall and at the bottom, and then the insulation cotton with double-sided aluminum foil is densely filled here. The length of the insulation cotton is the longitudinal internal clear distance length of the angle steel; then the steel mesh 4 is preferably fully laid above the eaves keel bracket I5a and the eaves keel bracket II5b, and the steel mesh 4 is overlapped by not less than two cells in the longitudinal and transverse directions, and then the steel mesh 4 is fully laid with double-sided aluminum foil insulation cotton, and the insulation cotton is disconnected as a whole at the reinforced insulation position. The width of the deformation gap c is not less than the width of the deformation joint I (≥D), and the insulation boards on both sides and the concave reinforced insulation board below have overlapping parts, and the overlapping length is not less than the width of the deformation joint I (≥D). This part of the reinforced insulation layer can ensure that the insulation is continuous and strengthened while the building is deformed.

[0049] For metal roof cornice aluminum veneer systems to achieve excellent waterproofing and thermal insulation, the treatment of the aluminum veneer's expansion joints is a crucial factor. This invention utilizes the above-mentioned installation method to control construction quality. Firstly, it allows the cornice aluminum veneer to adapt to building deformation; secondly, it solves the waterproofing problem at the aluminum veneer expansion joints (breaks); and the added insulation board ensures continuous and enhanced insulation at this location even as the building deforms.

[0050] Any matters not described in the present invention are applicable to the prior art.

[0051] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A metal roof cornice aluminum veneer expansion joint system, characterized in that: The system comprises an independent main structure I (11a) and a main structure II (11b), wherein a deformation joint I (a) is formed between the main structure I (11a) and the main structure II (11b); an eaves keel bracket I (5a) is provided on the main structure I (11a), and an eaves keel bracket II (5b) is provided on the main structure II (11b); the tops of the eaves keel bracket I (5a) and the eaves keel bracket II (5b) are respectively paved with insulation boards (3a), and the insulation boards (3a) are disconnected from the eaves keel bracket I (5a) to form a deformation gap (c), and the width D1 of the deformation gap (c) is greater than or equal to the width D of the deformation joint I (a); a reinforcing insulation board (3b) is further provided below the deformation gap (c). ), the width D2 of the reinforced insulation board (3b) is at least 3 times the width D of the deformation joint I(a); the top of the eaves keel bracket I(5a) is installed with an upwardly extending aluminum veneer keel bracket I(7a), and the top of the eaves keel bracket II(5b) is installed with an upwardly extending aluminum veneer keel bracket II(7b), a disconnected deformation joint II(b) is formed between the aluminum veneer keel bracket I(7a) and the aluminum veneer keel bracket II(7b), the outer side surfaces of the aluminum veneer keel bracket I(7a) and the aluminum veneer keel bracket II(7b) are respectively paved with aluminum veneers (2), the deformation joint I(a) and the deformation joint II(b) are staggered, and a retractable waterproof board (10) is installed at the deformation joint II(b).

2. The metal roof cornice aluminum veneer expansion joint system according to claim 1 is characterized in that: An aluminum veneer keel bracket III (7c) connected to the aluminum veneer keel bracket II (7b) is also provided above the deformation joint II (b), and the outer side surfaces of the aluminum veneer keel bracket III (7c) and the aluminum veneer keel bracket II (7b) are paved with the aluminum veneer (2), and the aluminum veneer keel bracket III (7c) completely covers the deformation joint II (b). A waterproof aluminum plate (12) is installed on the aluminum veneer keel bracket I (7a) located in the coverage area of ​​the aluminum veneer keel bracket III (7c), and the intersection of the waterproof aluminum plate (12) and the aluminum veneer (2) is connected by a full-length aluminum weld (13), and a full-length rubber waterstop (14) is connected between the end of the aluminum veneer (2) on the aluminum veneer keel bracket III (7c) and the waterproof aluminum plate (12).

3. The metal roof cornice aluminum veneer expansion joint system according to claim 2 is characterized in that: The waterproof aluminum plate (12) is higher than the aluminum veneer (2) intersecting with it, and the cross-sectional width of the rubber waterstop (14) is at least the sum of the distance between the waterproof aluminum plate (12) and the end of the aluminum veneer (2) on the aluminum veneer keel bracket III (7c) and the width D of the deformation joint I (a).

4. The metal roof cornice aluminum veneer expansion joint system according to claim 2, characterized in that: The aluminum veneer keel bracket II (7b) includes a main keel I (7b1), a main keel II (7b2), a main keel III (7b3) and a secondary keel (7b4), wherein the main keel I (7b1) is vertically fixed to the eaves keel bracket II (5b), the main keel II (7b2) is horizontally installed on the top of the main keel I (7b1), the main keel III (7b3) is close to the deformation joint II (b), one end of the secondary keel (7b4) is fixedly connected to the main keel III (7b3), and the other end of the secondary keel (7b4) is hinged to the main keel II (7b2) through a steel plate connector (8).

5. The metal roof cornice aluminum veneer expansion joint system according to claim 4, characterized in that: The steel plate connector (8) is L-shaped, one side of which is fixedly connected to the main keel II (7b2), and the other side of which is provided with at least two transverse oblong holes (81) arranged along the length direction of the secondary keel (7b4), and the end of the secondary keel (7b4) is connected to the transverse oblong hole (81) on the steel plate connector (8) through a bolt (9).

6. The metal roof cornice aluminum veneer expansion joint system according to any one of claims 1 to 5, characterized in that: A through-length V-shaped or wavy telescopic structure (10a) is provided in the middle portion of the width direction of the waterproof board (10), which includes a waterproof coiled material (101) and a steel plate edge plate (102). The waterproof coiled material (101) is bonded to the steel plate edge plate (102), and the two ends of the waterproof board (10) are respectively fixed to the aluminum single board keel bracket I (7a) and the aluminum single board keel bracket II (7b) by screws.

7. The metal roof cornice aluminum veneer expansion joint system according to claim 6, characterized in that: The reinforced thermal insulation board (3b) is arranged symmetrically with respect to the deformation gap (c), and is installed in a groove structure (6a) formed by a metal frame (6). The metal frame (6) is fixed on the eaves keel bracket I (5a). A steel mesh (4) is laid around the bottom and inner wall of the groove structure (6a). The reinforced thermal insulation board (3b) is thermal insulation cotton with aluminum foil on both sides, which is densely filled in the groove structure (6a).

8. The metal roof cornice aluminum veneer expansion joint system according to claim 1, characterized in that: The eaves keel bracket I (5a) and the eaves keel bracket II (5b) are fully covered with a steel mesh (4), the steel mesh (4) is disconnected at the deformation gap (c), the insulation board (3a) is insulation cotton with aluminum foil on both sides, and the insulation board (3a) is laid on the steel mesh (4).

9. The metal roof cornice aluminum veneer expansion joint system according to claim 8, characterized in that: The overlapping length formed by the thermal insulation board (3a) and the reinforced thermal insulation board (3b) is greater than or equal to the width D of the deformation joint I(a).

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