TW202001051A - Double-layer metal plate structure - Google Patents

Abstract

This invention relates to a double-layer metal plate structure, which includes at least a lower metal plate and a upper metal plate. Said lower metal plate is provided with at least a first peak and at least a support base is arranged below the first peak, a bolt is passed through the first peak and the support base to locks the lower steel frame. The upper place of the first peak is arranged with at least a connecting seat which is provided with a lower fastener and a upper support, the lower fastener can clip the outer surface of the first peak and a bolt can lock the lower fastener and upper support together, then the second peak of said upper metal plate can be locked with the upper support to form a new double-layer metal plate structure. So that, the upper metal plate and the lower metal plate can be spaced symmetrically and parallel to each other to improve the wind pressure resistance of the metal structure.

Description

Double-layer structure steel plate

The invention consists of a double-layer steel plate composed of a lower-layer steel plate and an upper-layer steel plate, and is bolted from the first peak portion of the lower-layer steel plate through the support base and then combined with the steel frame; The connecting base, and the lower fastener of the connecting base is fastened to the periphery of the first peak, and the lower fastener and the upper support are bolted and combined by a bolting component, and then the second peak of the upper steel plate In combination with the aforementioned upper support member, the innovative design of the double-layer steel plate can be formed, so that the upper steel plate and the lower steel plate form a parallel structure, and the metal building can resist wind pressure.

According to the current combination of hidden steel plates (the general name of the industry, which includes metal plates and wave plates made of various materials), such as the invention No. I405892 "hidden steel plate structure" obtained by the inventor of the present case, it is based on the steel plate design. The first joint part and the second joint part; and then the fixing seat is arranged above the steel beam or the steel frame, and the mounting direction of the first joint part and the second joint part of the steel plate are perpendicular to each other, and are fixed by bolting components; After the two adjacent steel plates are combined with each other, the connection base and the steel plate are bolted and fixed, and if a second layer of steel structure, solar panel, exterior panel or other plates are to be installed above the connection base. In order to prevent the bolts from damaging the board, it is necessary to set up a joint seat above the connecting base, and to accommodate grooves for solar panels or other boards on both sides of the connection part, so that the adjacent boards can be accommodated without damaging the board structure. The combination of slotting is tight and the construction cost is high, which is its disadvantage.

Secondly, in the prior art, the connecting base is formed by integrally forming the first element and the second element, which must be formed from a thicker plate, and the manufacturing process is costly, and it is very inconvenient to bolt the first bolt element with a tool , Causing slow construction. Moreover, if the upper and lower steel plates are arranged in parallel with the same shape, the height of the arc-shaped bending portion connecting the base is slightly insufficient, which cannot meet the needs of the double-layer steel plate.

For this reason, the inventor of the present case specifically studied the installation and construction of the upper and lower double steel plates of the prior art, and reinvented the case.

The purpose of the present invention is to form a double-layer steel plate by connecting the base plate to connect the lower steel plate and the upper steel plate, and then bolt through the support base from the first peak of the lower steel plate through the support base, and connect with the steel frame or The combination of steel beams allows the upper steel plate and the lower steel plate to form a parallel structure, which enhances the innovative design of the metal building in compliance with the national standard wind pressure resistance experiment.

In order to achieve the above object, the present invention includes at least a steel plate and is composed of a lower steel plate and an upper steel plate. A support seat is provided below the first peak of the lower steel plate, and a bolt is inserted through the support from the first peak down Seat, and combined with the steel frame; a connecting seat is provided above the first peak, the connecting seat is provided with a lower fastener and an upper support, and the lower fastener can be fastened to the periphery of the first peak and then bolted The element bolts the lower fastener to the upper support, and then the second peak of the upper steel plate is bolted to the upper support to form an innovative design of the double-layer structure steel plate, allowing the upper steel plate and the lower steel plate to form The parallel structure exerts the anti-wind pressure effect of the metal building.

The steel plate of the present invention is provided with a plate surface, and a first joint portion and a second joint portion are located on two sides of the plate surface, so that the lower steel plate and the upper steel plate have the same structural characteristics.

In the double-layer structure steel plate of the present invention, the first joint portion of the first steel plate of the lower steel plate can be fastened and joined to form the first peak portion, and the first peak portion forms the first buckle The end and the second buckling end make the buckling stress between the adjacent steel plates of the lower layer have the effect of resisting wind pressure. The first joint portion of the third steel plate of the upper steel plate may be combined with the fourth joint portion of the fourth steel plate to form a second peak portion to be firmly combined with the upper support of the fixing base to form a double-layer structure steel plate.

The double-layer structure steel plate of the present invention is provided with a support seat below the first peak, and is bolted down from the first peak to pass through the support seat, and is combined with a steel frame or a steel beam.

The double-layer steel plate of the present invention is provided with a connecting seat above the first peak. The connecting seat is composed of a lower fastener and an upper support. The lower fastener is composed of a symmetrical first element and a second element. The fastener has a first fastening end and a second fastening end, the first fastening end can be fastened to the first fastening end of the first peak, and the second fastening end can be fastened to the first peak The second snap-in end. The aforementioned upper support is composed of symmetrical third and fourth elements. The upper support is formed with a support surface and can be bolted to the second peak of the upper steel plate to achieve the effect of a double-layer steel plate.

In order for the more expensive examiner to understand the present invention better, the best embodiment can be seen in FIGS. 1 to 8. The present invention includes at least a steel plate 1, a supporting base 2 and a connecting base 3 and other components.

As shown in FIG. 1, the steel plate 1 is provided with a plate surface 10, and the plate surface 10 may be provided with a plurality of reinforced flanges or no reinforced flanges. The first coupling portion 11 and the second coupling portion 12 on each side of the aforementioned board surface 10. The foregoing steel plate 1 can be used as the structural characteristics of the lower steel plate and the upper steel plate, so that the lower steel plate and the upper steel plate of the double-layer steel plate can have the same structural characteristic shape, and of course, they can also be composed of the lower steel plate and the upper steel plate with different structural characteristics.

As shown in FIGS. 2 and 3, the first steel plate 1a and the second steel plate 1b adjacent to the lower steel plate are combined with each other, and the first bonding portion 11 of the first steel plate 1a is the second bonding portion 12 of the second steel plate 1b. The first peak portion 13 is formed, that is, the first peak portion 13 is coated with the second joint portion 12 of the second steel plate 1b on the outer surface of the first joint portion 11 of the first steel plate 1a, and is engaged with each other The first peak 13 formed by the buckling of the adjacent first steel plate 1a and the second steel plate 1b has an excellent fastening effect, and the first peak 13 cannot be separated without a special destruction method. Improve the anti-wind pressure effect of the steel plate. Moreover, a first engaging end 130 and a second engaging end 131 are provided on the first peak portion 13 so that the combination of the first steel plate and the second steel plate adjacent to the lower steel plate has better fastening stress and improves wind resistance Benefit. The first engaging end 130 is composed of a first plane 130a, a first side surface 130b, and a first bending surface 130c of the first joint portion of the first steel plate. The second engaging end 131 is composed of the second plane 131a, the second side surface 131b and the second bending surface 131c of the second joint portion of the second steel plate.

As shown in FIGS. 2 and 3, the installation of the lower layer steel plate of the double-layer structure steel plate of the present invention is provided by the concave portion of the first joint portion 11 of the first steel plate 1a on the upper plane 20 of the support base 2, and then the bolt 21 The recessed portion of the first coupling portion 11 of the first steel plate 1a is bolted down through the support base 2, and then bolted and coupled with the steel frame or the steel beam 4. In other words, below the first peak 13 of the lower steel plate can be supported by the support base 2 and bolted through the support base 2 from the first peak 13 through the bolt 21 (referring to the bolt 21 from the first steel plate) The recessed portion of the first coupling portion 11 of 1a is bolted downward through the support base 2), and is coupled to the steel frame or the steel beam 4. Furthermore, on the surface 10 of the first steel plate 1a and the second steel plate 1b of the lower steel plate, flame-resistant, sound-insulating, and heat-insulating materials 5 (see FIG. 3) or no flame-resistant, sound-insulating, and heat-insulating materials (see FIG. 3) , It's okay.

As shown in FIGS. 2 and 3, when the first steel plate 1 a and the second steel plate 1 b of the foregoing lower steel plate are combined with each other, the connecting base 3 may be provided above the first peak 13 formed. The connecting base 3 is composed of a lower fastener 3a and an upper support 3b. The lower fastener 3a is composed of a symmetrical first element 30 and a second element 31, and forms a first fastening end 300 and a second fastening End 310, the first fastening end 300 is composed of the left plane 300a, the left side 300b and the left bending surface 300c of the first element 30, corresponding to the first fastening end 130, the first fastening end 130 The first flat surface 130a, the first side surface 130b, and the first bending surface 130c of the first peak 13 are formed. The second fastening end 310 is composed of a right plane 310a, a right side 310b, and a right bending surface 310c to correspond to the second fastening end 131, and the second fastening end 131 is formed by the first peak 13 The second flat surface 131a, the second side surface 131b and the second bending surface 131c are formed. And the first fastening end 300 is fastened to the first fastening end 130 of the first peak 13, and the second fastening end 310 is fastened to the second fastening end of the first peak 13 131. A bolt installation surface 32 is provided above the lower fastener 3a, and a hole 320 is provided on the bolt installation surface 32 to allow the bolt component 60 to pass through and be bolted. The bolt mounting surface 32 is formed by the bolt mounting surface 301 of the first element 30 and the bolt mounting surface 311 of the second element 31, and the perforation 320 of the bolt mounting surface 32 is formed by the bolt mounting surface of the first element 30 The perforation 301a of 301 and the perforation 311a of the mounting surface 311 of the second element 31 are close to each other. A support surface 34 is provided above the bolt installation surface 32 and is composed of the upper plane 302 of the first element 30 and the upper plane 312 of the second element 31 juxtaposed.

As shown in FIGS. 2 and 3, the upper support 3b of the connecting base 3 is composed of a symmetrical third element 35 and a fourth element 36. The upper support 3b is provided with a lower bolt mounting surface 37 to be disposed on the lower fastener 3a Among the bolt installation surfaces 32, the lower bolt installation surface 37 is provided with a through hole 370 to correspond to the through hole 320 of the bolt installation surface 32 for the bolt element 60 to pass through and be bolted. The lower bolt mounting surface 37 is composed of the bolt mounting surface 350 of the third element 35 and the bolt mounting surface 360 of the fourth element 36, and the perforation 370 of the lower bolt mounting surface 37 is formed by the bolt of the third element 35 The perforation 350a of the mounting surface 350 and the perforation 360a of the plugging surface 360 of the fourth element 36 are constructed together. A support structure 38 is provided above the lower bolt installation surface 37 of the upper support member 3b to support and position the support surface 34. The aforementioned support structure 38 is composed of the lower left plane 351, left elevation 352 and upper left plane 353 of the third element 35, and the lower right plane 361, right elevation 362 and upper right plane 363 of the fourth element 36, A middle hole 380 is formed inside the support structure 38. In order to allow the supporting structure 38 to withstand the locking pressure of the self-tapping screw, and to prevent the upper right plane 363 of the fourth element from being deflected downward by the self-tapping screw, it is on the left elevation 352 of the third element 35 An inner groove 353a is provided at the junction of the upper left plane 353, so that the end of the upper right plane 363 of the fourth element 36 can be inserted into an appropriate depth to produce a positioning combination.

As shown in FIGS. 2 and 3, the installation process of the lower steel plate, the supporting base 2 and the connecting base 3 is such that when the first joint portion 11 of the first steel plate 1a and the second joint portion 12 of the second steel plate 1b are joined to each other Before, the recessed portion of the first steel plate 1a is provided on the upper plane 20 of the support base 2, and the bolt element 21 is bolted downward from the recessed portion of the first joint portion 11 of the first steel plate 1a through the support base 2, Then it is bolted and combined with the steel frame or steel beam 4. In other words, below the first peak 13 of the lower steel plate can be supported by the support base 2 and bolted downward from the first peak 13 through the support base 2 and combined with the steel frame or steel beam 4 link. Then, the second coupling portion 12 of the second steel plate 1 is coated and fastened to the outer surface of the first steel plate 1a. The first peak 13 is formed by the first steel plate 1a and the second steel plate 1b that are adjacent to each other in the lower layer steel plate, and the first engaging end 130 and the second engaging end 131 are formed at the first peak. Then, the first fastening end 300 of the connecting base 3 is fastened to the first fastening end 130 of the first peak portion 13, and then the second fastening end 310 is fastened to the first fastening portion 13 of the first peak portion 13二扣合端131. After that, the lower bolt mounting surface 37 of the upper support 3b of the connecting base 3 is set in the bolt mounting surface 32 of the lower fastener 3a, and the lower bolt mounting surface 37 is perforated 370 corresponding to the bolt mounting surface 32 The through hole 320 is then penetrated and fixed by the bolting element 60. Before bolting, the inner groove 353a provided by the left vertical surface 352 of the third element 35 and the upper left plane 353 of the support structure 38 of the upper support 3b may be the end of the upper right plane 363 of the fourth element 36. Insert into an appropriate depth, so that it can be quickly and firmly combined with accurate positioning, and improve the structural support of the upper right plane 363 and the upper left plane 353, and then the complete installation of the lower steel plate, the supporting base 2 and the connecting base 3 can be completed .

As shown in FIGS. 4 to 8, when the upper steel plate is to be provided above the lower steel plate, the supporting base 2 and the connecting base 3, the concave portion of the first coupling portion 11 a of the third steel plate 1 c of the upper steel plate is provided on the connecting base 3 The upper plane 381 of the support structure 38 is bolted down through the upper plane 381 of the support structure 38 from the concave portion of the first coupling portion 11a of the third steel plate 1c with the bolting element 22 Bolted together. Further, the second joint portion 12a of the fourth steel plate 1d of the upper-layer steel plate is combined with the first joint portion 11a of the third steel plate 1c to form the second peak portion 13a, and the coupling between the upper-layer steel plate and the coupling seat 3 can be completed.

As shown in Figures 6 and 8, before laying and installing the upper steel plate, a flame-resistant, sound-insulating and heat-insulating material 5 can be laid on the surface 10 of the first steel plate 1a and the second steel plate 1b of the lower steel plate (see Figures 3-7); Or do not lay flame retardant, sound insulation and heat insulation materials (as shown in Figures 2 and 7).

In summary, the double-layer steel plate of the present invention, by connecting the base 3, allows the lower steel plate and the upper steel plate to be laid in a flat shape, which increases the aesthetic of the building, and also creates an air flow space between the lower steel plate and the upper steel plate 7. When the heat source generated by the upper steel plate is irradiated by the sun, it will not directly contact the lower steel plate, and the indoor space of the metal building will not generate high temperature, and the energy consumption must be reduced. In the event of fire or other disasters, the air flow space 7 can delay the time when the heat source of the lower steel plate contacts the upper steel plate, and then pull the lower steel plate through the upper steel plate to extend the time of the roof collapse of the building and let the building inside The personnel and property can be evacuated in a timely manner to reduce damage, improve the resistance to wind pressure, and increase the beauty of metal buildings.

The foregoing embodiments or drawings do not limit the appearance, structure, or use of the present invention. Any appropriate changes or modifications by those with ordinary knowledge in the technical field should be regarded as not departing from the patent scope of the present invention.

1‧‧‧ Steel plate 10‧‧‧Panel 11.11a‧‧‧The first joint 12, 12a‧‧‧Second joint 1a‧‧‧The first steel plate 1b‧‧‧Second steel plate 1c‧‧‧third steel plate 1d‧‧‧fourth steel plate 13‧‧‧First Peak 13a‧‧‧Second Peak 130‧‧‧First snap end 131‧‧‧Second snap end 130a‧‧‧The first plane 130b‧‧‧First side 130c‧‧‧The first bending surface 131a‧‧‧Second plane 131b‧‧‧Second side 131c‧‧‧Second bending surface 2‧‧‧support seat 20‧‧‧up plane 21‧‧‧bolt element 22‧‧‧bolt element 3‧‧‧Connecting seat 3a‧‧‧Down fastener 3b‧‧‧Upper support 30‧‧‧The first component 31‧‧‧Second component 300‧‧‧First fixing end 310‧‧‧Second fixing end 300a‧‧‧left plane 300b‧‧‧Left side 300c‧‧‧Left bending surface 310a‧‧‧Right plane 310b‧‧‧right side 310c‧‧‧Right bending surface 32‧‧‧Board setting surface 320‧‧‧Perforation 301, 311‧‧‧ bolting surface 301a, 311a 302‧‧‧up plane 312‧‧‧up plane 34‧‧‧Supporting surface 35‧‧‧The third component 36‧‧‧The fourth component 37‧‧‧ Lower bolt design surface 370‧‧‧Perforation 350、360‧‧‧bolt surface 350a, 360a‧‧‧Perforation 363‧‧‧upper right plane 351‧‧‧lower left plane 352‧‧‧left elevation 353‧‧‧up left plane 353a‧‧‧Inner groove 361‧‧‧ Lower right plane 362‧‧‧right elevation 38‧‧‧Support structure 380‧‧‧Medium hole 381‧‧‧up plane 4‧‧‧Steel frame or steel beam 5‧‧‧Combustible, sound insulation and heat insulation materials 60‧‧‧bolt element 7‧‧‧Air flow space

Figure 1 is a view of the steel plate of the present invention. Fig. 2 is a view 1 of the installation of the lower steel plate of the present invention. Fig. 3 A view 2 of the installation of the lower steel plate of the present invention. Figure 4 is the first view of the installation of the upper steel plate of the present invention. Figure 5 is an exploded perspective view of the installation of the upper steel plate of the present invention. 6 is a view of the first embodiment of the double-layer steel plate of the present invention. 7 is a perspective view of the first embodiment of the double-layer steel plate of the present invention. 8 is a view of the second embodiment of the double-layer steel plate of the present invention.

11.11a‧‧‧The first joint

12, 12a‧‧‧Second joint

1a‧‧‧The first steel plate

1b‧‧‧Second steel plate

1c‧‧‧third steel plate

1d‧‧‧fourth steel plate

13‧‧‧First Peak

13a‧‧‧Second Peak

2‧‧‧support seat

20‧‧‧up plane

21‧‧‧bolt element

22‧‧‧bolt element

3‧‧‧Connecting seat

30‧‧‧The first component

31‧‧‧Second component

32‧‧‧Board setting surface

34‧‧‧Supporting surface

37‧‧‧ Lower bolt design surface

38‧‧‧Support structure

380‧‧‧Medium hole

381‧‧‧up plane

4‧‧‧Steel frame or steel beam

5‧‧‧Combustible, sound insulation and heat insulation materials

60‧‧‧bolt element

Claims (16)

A double-layer structure steel plate, at least comprising: a steel plate, which is composed of a lower steel plate and an upper steel plate, a support seat is provided below the first peak of the lower steel plate, and a bolt is inserted through the support from the first peak down Seat, and combined with a steel frame or a steel beam; a connecting seat is provided above the first peak, the connecting seat is provided with a lower fastener and an upper support member, and the lower fastener can be fastened to the periphery of the first peak, Then, the lower fastener and the upper support are bolted and combined with a bolting component, and then the second peak portion of the upper steel plate is bolted and combined with the upper support to create an air flow space between the lower steel plate and the upper steel plate , To form a double-layer steel plate, allowing the upper steel plate and the lower steel plate to form a parallel structure, exerting the anti-wind pressure effect of the metal building. According to the double-layer steel plate according to claim 1, the aforementioned steel plate can be used as the structural characteristics of the lower steel plate and the upper steel plate, so that the lower steel plate and the upper steel plate can have the same structural characteristic shape, or the lower steel plate and the upper steel plate are composed of different structural characteristics . According to the double-layer structure steel plate of claim 2, the first steel plate and the second steel plate adjacent to the lower steel plate are combined with each other, and the first bonding portion of the first steel plate is the second bonding portion of the second steel plate. The first peak is formed, that is, the first peak is covered with the second joint of the second steel plate on the outer surface of the first joint of the first steel plate, and is combined with each other to form an integral part The first peak formed by the buckling of the first steel plate and the second steel plate has an excellent buckling effect, which improves the wind pressure resistance of the steel plate. According to the double-layer structure steel plate of claim 3, the first engaging end of the first peak portion is composed of the first plane, the first side surface, and the first bending surface of the first joint portion of the first steel plate; The second engaging end is composed of a second plane, a second side surface and a second bending surface of the second joint portion of the second steel plate. According to the double-layer structure steel plate of claim 1, the installation of the lower steel plate is provided with the recessed portion of the first joint portion of the first steel plate on the upper plane of the support base, and then with the bolt element from the first steel plate. A recessed portion of a joint portion is bolted down through the support base, and then bolted and combined with the steel frame or steel beam; in other words, the first peak of the lower steel plate can be supported by the support base, and the bolt element is used from the first A peak is bolted down through the support base and combined with the steel frame or steel beam. According to the double-layer structure steel plate of claim 5, the first steel plate and the second steel plate of the lower steel plate are combined with each other to form a connection seat above the first peak. According to the double-layer structure steel plate of claim 6, the connection base is composed of a lower fastener and an upper support, the lower fastener is composed of a symmetrical first element and a second element, and forms a first fastening end and a second Two fastening ends, the first fastening end is composed of a left plane, a left side surface and a left bending surface of the first element, to correspond to the first fastening end of the first peak, the first fastening end is composed of The first plane, the first side surface and the first bending surface of the first peak portion; the second fastening end is composed of the right plane, the right side surface and the right bending surface of the second element, corresponding to the second peak portion The second fastening end is composed of the second plane of the first peak, the second side surface and the second bending surface; in this way, the first fastening end can be engaged with the first The first engaging end of the peak is then engaged with the second engaging end of the first peak. According to the double-layer structure steel plate of claim 7, a bolt setting surface is provided above the lower fastener of the coupling seat, and the bolt setting surface is provided with a perforation to allow the bolt component to pass through the bolt; the bolt setting surface is formed by the first The bolting surface of the element and the bolting surface of the second element are formed side by side, and the perforation of the bolting surface is composed of the perforation of the bolting surface of the first element and the perforation of the bolting surface of the second element; The support surface above the bolt installation surface is composed of the upper plane of the first element and the upper plane of the second element juxtaposed, and the support structure of the upper support seat can be supported by the support surface. According to the double-layer structure steel plate of claim 7, the upper support member of the connecting base is composed of symmetrical third and fourth elements, and the upper support member is provided with a lower bolt installation surface to be provided on the bolt of the lower fastener Among the installation surfaces, the aforementioned lower bolt installation surface is perforated to correspond to the perforation of the bolt installation surface, so that the bolt component passes through and is bolted. According to the double-layer structure steel plate of claim 7, the lower bolt mounting surface of the upper support of the connecting seat is composed of the bolt mounting surface of the third element and the bolt mounting surface of the fourth element, the The perforation is composed of the perforation of the bolting surface of the third element and the perforation of the bolting surface of the fourth element. According to the double-layer structure steel plate of claim 7, a support structure is provided above the lower bolt installation surface of the upper support of the connection seat, which can support and position the support surface of the lower fastener; the support structure is formed by the third element The lower left plane, the left vertical plane, and the upper left plane are composed of the lower right plane, the right vertical plane, and the upper right plane of the fourth element, and a middle hole is formed inside the aforementioned support structure. According to the double-layer structural steel plate described in claim 11, the support structure can withstand the locking pressure of the self-tapping screw, and an internal groove is provided at the junction of the left vertical surface and the upper left plane of the third element, which is considered to be the fourth The upper right end of the component can be inserted into the appropriate depth to produce a positioning combination. According to the double-layer structure steel plate of claim 1, the lower steel plate, the supporting seat and the connecting seat are installed when the first joint portion of the first steel plate and the second joint portion of the second steel plate are before joining each other It is supported by the support base below the first peak of the lower steel plate, and is bolted down from the first peak through the support base and combined with the steel frame or steel beam; The second joint portion of the second steel plate is covered and fastened on the outer surface of the first steel plate; then the first joint end and the second joint end are formed on the first peak of the lower steel plate; A fastening end is fastened to the first fastening end of the first peak portion, and the second fastening end of the connecting base is fastened to the second fastening end of the first peak portion; The lower bolt mounting surface of the upper support member is set in the bolt mounting surface of the lower fastener, the perforation of the lower bolt mounting surface corresponds to the perforation of the bolt mounting surface, and then the bolt element is passed through and bolted; Before fixing, the inner groove provided in the support structure of the upper support member can be inserted into the appropriate depth for the upper right plane end of the fourth element to produce a positioning combination, which can complete the precision of the lower steel plate, the support seat and the connecting seat Real installation. The double-layer steel plate according to claim 13, wherein the upper steel plate is provided above the lower steel plate, the support seat and the connecting seat, and the recessed portion of the first joint portion of the third steel plate of the upper steel plate is provided on the support of the connecting seat The upper plane of the structure body is bolted down from the concave portion of the first joint portion of the third steel plate through the upper plane of the support structure body to be bolted and coupled with the connecting seat; The second joint portion of the fourth steel plate is combined with the first joint portion of the aforementioned third steel plate to form a second peak portion to complete the connection between the upper steel plate and the coupling seat. According to the double-layer structural steel plate described in claim 14, before laying and installing the upper steel plate, flame-resistant, sound-insulating and heat-insulating materials may be laid over the first steel plate and the second steel plate of the lower steel plate; 、Insulation material. The double-layer steel plate according to claim 1 or 13, wherein the lower steel plate and the upper steel plate can be laid in a flat shape by the aforementioned connecting seat to increase the aesthetics of the building, and a certain air flow is generated in the lower steel plate and the upper steel plate Space, when the heat source of the upper steel plate does not directly contact the lower steel plate, energy loss can be reduced; if a disaster occurs, the airflow flow space can delay the time when the heat source of the lower steel plate contacts the upper steel plate, and then pull the upper steel plate The introduction of the lower steel plate can extend the time for the roof of the building to collapse, reduce the damage, and improve the resistance to wind pressure.

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