Sound insulation structure filled inside steel frame building and construction method

Abstract

The present invention discloses a sound insulation structure filled inside a steel frame building and a construction method, which belongs to the technical field of sound insulation of steel frame buildings. A sound insulation structure filled inside a steel frame building and a construction method, comprising a steel column, wherein an upper connecting plate and a lower connecting plate having a first mounting hole are respectively provided at the upper and lower ends of the exterior of the steel column, and extension plates are provided on both sides of the upper connecting plate and the lower connecting plate. The present invention solves the problem of poor sound insulation effect during the erection of existing prefabricated building steel frame structures. The present invention connects and covers the two steel columns through a first sound insulation cover and a second sound insulation cover, and during the connection and covering process, a third silica aerogel, a glass fiber felt, a second silica aerogel, a high-density rock wool and a fireproof panel are sequentially installed between the first sound insulation cover and the second sound insulation cover to isolate noise, keep warm and provide support capacity.

Description

Technical Field

[0001] The present invention relates to the technical field of sound insulation of steel frame buildings, in particular to a sound insulation structure filled inside a steel frame building and a construction method. Background Art

[0002] Filling the interior of a steel frame building with sound insulation structure refers to filling the cavity of a steel frame building with sound insulation materials to reduce noise transmission. These materials have good sound absorption and sound insulation properties. Filling the sound insulation structure can effectively block external noise from entering the room, while reducing the impact of indoor noise on the external environment. The density, thickness and installation method of the sound insulation material will affect the sound insulation effect. The sound insulation structure can also be combined with fire prevention, thermal insulation and other functions to improve the overall performance of the building.

[0003] A Chinese patent with authorization announcement number CN218116746U discloses an assembled building steel frame structure, which includes an installation and fixing block and a pulling and fixing arm rod. The pulling and fixing arm rod is installed and fixed at the middle position of the lower end of the installation and fixing block. The lower end of the pulling and fixing arm rod is provided with a fixing cover, and an arm rod cover block is provided on the surrounding side of the fixing cover. The interior of the arm rod cover block is provided with an external steel frame arm rod. The assembled building steel frame structure provided by this utility model has the technical effect of limiting and fixing to prevent loosening and falling off.

[0004] The prefabricated building steel frame structure of the above-mentioned patent has poor sound insulation effect during the erection process and cannot cope with relatively noisy environments. After the steel frame building is erected, it is not convenient to install additional sound insulation structure inside the prefabricated building steel frame structure. Summary of the Invention

[0005] The object of the present invention is to provide a sound insulation structure and construction method for filling the interior of a steel frame building, wherein two steel columns are connected and covered by a first sound insulation cover and a second sound insulation cover. During the connection and covering process, a third silica aerogel, a glass fiber felt, a second silica aerogel, a high-density rock wool and a fireproof panel are sequentially installed between the first sound insulation cover and the second sound insulation cover to isolate noise, keep warm and provide support capacity, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a sound insulation structure filled inside a steel frame building, comprising a steel column, wherein an upper connecting plate and a lower connecting plate having a first mounting hole are respectively provided at the upper and lower ends of the outer side of the steel column, and an extension plate is provided on both sides of the upper connecting plate and the lower connecting plate, and a second mounting hole is provided on both sides of the steel column, and a bolt passes through the extension plate and is embedded in the second mounting hole, and a first sound insulation cover and a second sound insulation cover are respectively provided at the front and rear ends between the two steel columns, and the first sound insulation cover is sequentially provided with a third silica aerogel, a glass fiber felt, a high-density rock wool and a fireproof panel facing the second sound insulation cover, wherein the third silica aerogel can be used for thermal insulation, and the glass fiber felt can be used for both summer insulation and winter insulation to save energy, wherein the high-density rock wool suppresses the low-frequency noise of the steel structure resonance, does not release toxic gases when encountering fire, and can partially share the lateral load of the steel frame, and finally the fireproof panel replaces the traditional gypsum board + paint process, thereby improving construction efficiency and reducing formaldehyde emission.

[0007] Preferably, the first sound insulation cover is provided with reinforcement sheets on both sides facing the two steel columns, and the sides of the reinforcement sheets will fit the sides of the two steel columns. The stability of the support of the two steel columns can be improved by the reinforcement sheets fitting the sides of the steel columns, and the third silica aerogel, glass fiber felt, high-density rock wool and fireproof panel can be installed one by one between a pair of reinforcement sheets.

[0008] Preferably, the outside of the third silica aerogel is vacuum-encapsulated by aluminum foil, the first silica aerogel and the second silica aerogel are respectively provided on both sides of the outside of the glass fiber felt, the glass fiber felt is multi-layered, the high-density rock wool is basalt melted and fiberized with a phenolic resin binder, the fireproof panel is quartz sand and lime autoclaved at high temperature, and the third silica aerogel is internally vacuumed by aluminum foil, the vacuum environment blocks the thermal motion of gas molecules, and has good thermal insulation performance.

[0009] Preferably, connecting blocks are provided on the side surfaces at the front and rear ends of the extension plate, and the connecting blocks will contact the first sound insulation cover and the second sound insulation cover synchronously with the extension plate. The connecting blocks can increase the contact area between the first sound insulation cover and the second sound insulation cover, and the stability of the installation and support of the first sound insulation cover and the second sound insulation cover can be improved by increasing the contact area.

[0010] Preferably, fourth mounting holes are provided through the upper and lower ends of the reinforcement plate, and fifth mounting holes are provided at the four corners inside the second sound insulation cover, and the centers of the fifth mounting hole, the fourth mounting hole and the third mounting hole overlap, and the reserved fourth mounting hole, the fourth mounting hole and the third mounting hole can facilitate the penetration and fixation of the fixing rod.

[0011] Preferably, a fixing rod is provided through the inside of the fifth mounting hole, the fourth mounting hole and the third mounting hole, and a nut that is threadedly matched with the fixing rod is provided at the position of the fifth mounting hole. After the fixing rod passes through the fifth mounting hole, the fourth mounting hole and the third mounting hole, the nut at the position of the fifth mounting hole can lock the first sound insulation cover and the second sound insulation cover so that the first sound insulation cover and the second sound insulation cover are tightly attached.

[0012] Preferably, the upper connecting plate and the lower connecting plate are provided with sound insulation cotton toward the middle of the steel column. The length of the sound insulation cotton is half of the length of the steel column. The sound insulation cotton can be installed inside the steel column together with the upper connecting plate and the lower connecting plate to soundproof the steel column area.

[0013] Preferably, a connecting piece is provided at one end of the sound insulation cotton, and the connecting piece and the sound insulation cotton are an integrated structure. The connecting piece can assist the sound insulation cotton in being stuck on the outside of the upper connecting plate and the lower connecting plate. The connection between the connecting piece and the upper connecting plate and the lower connecting plate can improve the stability of the sound insulation cotton connection.

[0014] Preferably, the outside of the connecting piece is connected to the corresponding upper connecting plate and lower connecting plate by a slot, and the four corners of the connecting piece are fixedly connected to the upper connecting plate and lower connecting plate by bolts. The sound insulation cotton can be installed and disassembled by passing the bolts through the connecting piece and embedding them into the corresponding upper connecting plate and lower connecting plate.

[0015] A construction method for filling a sound insulation structure inside a steel frame building comprises the following steps:

[0016] Step 1: An upper connecting plate and a lower connecting plate are respectively installed at the head and tail ends of the two steel columns to be connected;

[0017] Step 2: Bolts penetrate the extension plate and extend into the second mounting holes at the four corners on both sides of the steel column;

[0018] Step 3: Fit the upper connecting plate connected to one of the steel columns to the lower connecting plate connected to the other steel column so that the first mounting holes overlap. Pass a bolt through the two overlapping first mounting holes, and tighten a nut on the outside of the bolt to secure the two steel columns.

[0019] Step 4: Install the first soundproof cover at the rear end between the two steel columns, with the upper and lower connecting plates attached to both sides of the first soundproof cover.

[0020] Step 5: The interior of the reinforcement sheet inside the first soundproof cover is filled with the third silica aerogel, glass fiber felt, high-density rock wool and fireproof panel in sequence, and the second soundproof cover is installed at the front end between the two steel columns;

[0021] Step 6: After the fixing rod passes through the fourth mounting hole, the third mounting hole and the fifth mounting hole in sequence, rotate the nut on the outside of the fixing rod at the position of the fifth mounting hole.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention wraps and connects the front and rear ends between two parallel steel columns by the first sound insulation cover and the second sound insulation cover. When the first sound insulation cover is first installed at the rear end between the two steel columns, the interior of the first sound insulation cover can be filled with the third silica aerogel wrapped with aluminum foil, the glass fiber felt wrapped with the first silica aerogel and the second silica aerogel in the front and back, the high-density rock wool and the fireproof panel in sequence. Finally, when the second sound insulation cover covers the front end of the outside of the first sound insulation cover, the internal filling material can be covered at the same time, and the filling material can be used for insulation, sound insulation and improved stability. The installation method is simple, and each group of the first sound insulation cover and the second sound insulation cover can be selectively installed. For positions that do not require insulation, sound insulation and improved stability, it is only necessary to connect the steel columns on both sides through the first sound insulation cover and the second sound insulation cover.

[0024] 2. When the two longitudinal steel columns of the present invention are connected at the head and tail, the two ends of the steel column are first connected by the upper connecting plate and the lower connecting plate respectively. The upper connecting plate and the lower connecting plate are successively penetrated through the extension plate by bolts and embedded in the second mounting hole positions reserved on both sides of the steel column, so as to complete the fixation of the upper connecting plate and the lower connecting plate. The upper connecting plate and the lower connecting plate can be fixed by bolts penetrating the first mounting hole. The fixing method is simple and efficient, and can meet the splicing requirements of steel frame buildings of different heights and lengths. When the upper connecting plate and the lower connecting plate are installed, the connecting plate can be used to drive the sound insulation cotton to be stuck on the side of the upper connecting plate and the lower connecting plate facing the steel column in advance, so that the sound insulation cotton is installed to the inside of the steel column along with the upper connecting plate and the lower connecting plate, and additional sound insulation is performed in the internal area of ​​the steel column, thereby making it possible to lay the sound insulation structure at the required position of the entire steel frame building, and the laying is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall external structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the installation trajectory of the sound insulation cotton of the present invention;

[0027] Figure 3 Exploded diagram of the internal structure of the first soundproof cover and the second soundproof cover of the present invention;

[0028] Figure 4 For the present invention Figure 3 A partial enlarged view of area A in the middle;

[0029] Figure 5A cross-sectional view of the internal structure of the first soundproof cover and the second soundproof cover of the present invention;

[0030] Figure 6 This is a cross-sectional view of the positional relationship of the sound insulation cotton of the present invention;

[0031] Figure 7 For the present invention Figure 5 A partial enlarged view of area B in the middle.

[0032] In the figure: 1. Steel column; 2. Upper connecting plate; 3. Lower connecting plate; 4. First mounting hole; 5. Extension plate; 6. Second mounting hole; 7. Connecting block; 8. Third mounting hole; 9. First sound insulation cover; 10. Second sound insulation cover; 11. Fourth mounting hole; 12. Fifth mounting hole; 13. Fixing rod; 14. Reinforcement sheet; 15. Aluminum foil; 16. First silica aerogel; 17. Glass fiber felt; 18. Second silica aerogel; 19. High-density rock wool; 20. Fireproof panel; 21. Third silica aerogel; 22. Sound insulation cotton; 23. Connecting sheet. DETAILED DESCRIPTION

[0033] The present invention will be further described below with reference to specific embodiments.

[0034] Example 1: Figure 1 As shown, a sound insulation structure filled inside a steel frame building of this embodiment includes a steel column 1. A plurality of steel columns 1 are longitudinally distributed. The plurality of steel columns 1 are spliced ​​end to end to realize the assembly of the steel frame building. An upper connecting plate 2 is provided at the upper end of the outer portion of the steel column 1, and a lower connecting plate 3 is provided at the lower end of the outer portion of the steel column 1. When splicing the steel columns 1, the upper and lower ends of the outer portion of the steel column 1 are pre-filled and installed with the upper connecting plate 2 and the lower connecting plate 3.

[0035] Among them, such as Figure 4 As shown, first mounting holes 4 are provided on both sides of the front and rear ends of the upper connecting plate 2 and the lower connecting plate 3. The reserved first mounting holes 4 facilitate the rotation of the through screws and the rotation of the nuts on the outside of the screws. When two steel columns 1 with the upper connecting plates 2 and the lower connecting plates 3 are mounted are spliced, the upper connecting plate 2 at one end of one of the steel columns 1 fits with the lower connecting plate 3 at one end of the other steel column 1. When fitting, the first mounting holes 4 inside the upper connecting plate 2 and the lower connecting plate 3 will overlap. At this time, the through bolts are inserted and the nuts are rotated on the outside of the bolts to complete the fixation.

[0036] Secondly, both sides of the upper connecting plate 2 and the lower connecting plate 3 are extended toward the middle position of the steel column 1. The extension plates 5 are attached to both sides of the steel column 1 as the upper connecting plate 2 and the lower connecting plate 3 are installed. The extended extension plates 5 can improve the effect of the upper connecting plate 2 and the lower connecting plate 3 fitting the steel column 1, improve the stability of the installation, and improve the bearing capacity of multiple steel columns 1 after splicing, so as to prevent the upper connecting plate 2 and the lower connecting plate 3 from falling off and position displacement;

[0037] Second mounting holes 6 are provided at the four corners on both sides of the steel column 1. After the extension plate 5 is installed together with the upper connecting plate 2 and the lower connecting plate 3, bolts pass through the extension plate 5 and are inserted into the reserved second mounting holes 6 to connect the upper connecting plate 2 and the lower connecting plate 3 to the steel column 1.

[0038] A first soundproof cover 9 is provided at the rear end between the two transversely distributed steel columns 1, and a second soundproof cover 10 is provided at the front end between the two transversely distributed steel columns 1. The second soundproof cover 10 and the first soundproof cover 9 can wrap and cover the area between the two steel columns 1, and can also block noise from the area between the two steel columns 1;

[0039] In order to improve the installation stability of the first sound insulation cover 9 and the second sound insulation cover 10, the first sound insulation cover 9 and the second sound insulation cover 10 are provided with extensions at both upper and lower ends facing the two steel columns 1. When the first sound insulation cover 9 and the second sound insulation cover 10 are installed on the extension plate 5, the extension positions of the first sound insulation cover 9 and the second sound insulation cover 10 will contact and support each other.

[0040] Among them, the first sound insulation cover 9 is provided with reinforcement sheets 14 on both sides facing the two steel columns 1. When the first sound insulation cover 9 and the second sound insulation cover 10 are installed, the reinforcement sheets 14 on both sides of the first sound insulation cover 9 will directly contact the second sound insulation cover 10, and the sides of the reinforcement sheets 14 will fit the sides of the two steel columns 1. The steel columns 1 are additionally fitted with the reinforcement sheets 14, thereby further improving the installation stability of the two first sound insulation covers 9 and the two steel columns 1 and improving the load-bearing capacity.

[0041] In addition, an additional structure can be installed in the area extending between the reinforcing sheet 14 and the upper and lower ends of the first sound insulation cover 9 toward the steel column 1. The additionally installed structure can be used to fill the area for sound insulation, heat insulation and support the entire steel frame building. The side of the first sound insulation cover 9 facing the second sound insulation cover 10 is sequentially provided with a third silica aerogel 21, a glass fiber mat 17, a second silica aerogel 18, a high-density rock wool 19 and a fireproof panel 20. The multi-layer filling structure is filled between the first sound insulation cover 9 and the second sound insulation cover 10 to provide sound insulation, heat insulation and support.

[0042] like Figure 3 and Figure 5As shown, the outside of the third silica aerogel 21 is vacuum-encapsulated by aluminum foil 15. After being encapsulated by the aluminum foil 15, the inside of the aluminum foil 15 is vacuum, and the vacuum environment blocks the thermal motion of gas molecules, has good thermal insulation performance, and reduces the cold bridge effect. In addition, the aluminum foil 15 encapsulation is puncture-resistant and anti-oxidation, and has a long service life.

[0043] Referring to the Chinese patent application CN102766440B, in which vacuum packaging is performed by aluminum foil, the third silica aerogel 21 is vacuum packaged by aluminum foil 15 in the present application. Vacuum packaging is a prior art, and therefore, it is not described in detail in the present application.

[0044] A first silica aerogel 16 is provided on the outer side of the glass fiber mat 17 facing the first sound insulation cover 9, and a second silica aerogel 18 is provided on the outer side of the glass fiber mat 17 facing the second sound insulation cover 10. The second silica aerogel 18 and the first silica aerogel 16 can completely cover and wrap the glass fiber mat 17 in the middle position;

[0045] The glass fiber mat 17 is a multi-layer stacked structure. The glass fiber mat 17, together with the first silica aerogel 16 and the second silica aerogel 18 on both sides of the exterior, can block infrared radiation heat, achieving both summer heat insulation and winter heat preservation and energy saving. The first silica aerogel 16 and the second silica aerogel 18 can be filled to the inner edge of the first sound insulation cover 9 to achieve coverage without dead angles, further improving the thermal insulation effect.

[0046] The high-density rock wool 19 is made of basalt melted and fiberized with a phenolic resin binder. The laying of the high-density rock wool 19 can suppress the resonant low-frequency noise of the steel structure, and does not release toxic gases in the event of fire. It can partially share the lateral load of the steel frame and improve the stability of the support between the two steel columns 1.

[0047] With reference to the Chinese patent application number CN100509670C, which relates to a method and apparatus for producing basalt fiber, the present application does not elaborate on how the high-density rock wool 19 is melt-fiberized.

[0048] Fireproof panel 20 is made of quartz sand and lime autoclaved at high temperature, replacing traditional gypsum board, which improves construction efficiency, has low formaldehyde emission, is suitable for most places, and has high flexural strength;

[0049] Reference is made to the Chinese patent application CN216968184U, which relates to a high-temperature and high-pressure autoclave apparatus for aerated bricks and describes the high-temperature and high-pressure autoclave of aerated bricks in detail. Therefore, this application does not elaborate on the high-temperature autoclave molding method of quartz sand and lime.

[0050] Connecting blocks 7 are provided on the sides of the front and rear ends of the extension plate 5. When the first sound insulation cover 9 and the second sound insulation cover 10 are installed and erected in contact with the steel column 1, the connecting blocks 7 will contact the first sound insulation cover 9 and the second sound insulation cover 10 synchronously with the extension plate 5, thereby expanding the contact area and improving the stability of the support. A third mounting hole 8 is provided through the interior of the connecting block 7, which facilitates the installation and connection of the first sound insulation cover 9 and the second sound insulation cover 10.

[0051] Among them, the upper and lower ends of the reinforcing plate 14 are penetrated with fourth mounting holes 11, and the fourth mounting holes 11 pass through and extend to the inner and outer sides of the first sound insulation cover 9, and the four corners of the second sound insulation cover 10 are all provided with fifth mounting holes 12, and the centers of the fifth mounting holes 12, the fourth mounting holes 11 and the third mounting holes 8 overlap, as shown in FIG. Figure 6 and Figure 7 As shown, a fixing rod 13 is provided through the inside of the fifth mounting hole 12, the fourth mounting hole 11 and the third mounting hole 8. After the first sound insulation cover 9 and the second sound insulation cover 10 cover the front and rear ends between the two steel columns 1, they are penetrated and fixed by the fixing rod 13;

[0052] In addition, a rotatable nut is provided at the position of the fifth mounting hole 12. After the fixing rod 13 passes through the fourth mounting hole 11, the third mounting hole 8 and the fifth mounting hole 12 in sequence, the end of the fixing rod 13 will be exposed from the position of the fifth mounting hole 12, and the nut rotates outside the fixing rod 13 to fix the first sound insulation cover 9 and the second sound insulation cover 10, and the extension of the reinforcement sheet 14 can wrap and protect the passing fixing rod 13. At the same time, the reinforcement sheet 14 can also wrap the bolts passing through the second mounting hole 6 inside the extension plate 5, thereby improving the stability of the connection structure. The bolts used for connection can be wrapped to prevent the bolts from being exposed to the outdoors and rusting:

[0053] In order to soundproof the area of ​​steel column 1, Figure 2 As shown, the upper connecting plate 2 and the lower connecting plate 3 are provided with sound insulation cotton 22 toward the middle of the steel column 1. The sound insulation cotton 22 is fixed inside the steel column 1 as the upper connecting plate 2 and the lower connecting plate 3 are installed.

[0054] Among them, the length of the sound insulation cotton 22 is half of the length of the steel column 1. After the upper connecting plate 2 and the lower connecting plate 3 cover the two ends of the steel column 1, the upper connecting plate 2 and the lower connecting plate 3 can respectively drive the sound insulation cotton 22 to fill and completely cover the entire steel column 1, thereby achieving sound insulation at the position of the steel column 1.

[0055] Example 2: A connecting piece 23 is provided at one end of the sound insulation cotton 22, and the connecting piece 23 and the sound insulation cotton 22 are an integrated structure. The connecting piece 23 can be used to assist in connecting the sound insulation cotton 22 at the lower end. The outside of the connecting piece 23 is connected to the corresponding upper connecting plate 2 and the lower connecting plate 3 by a slot. The four corners of the connecting piece 23 are fixedly connected to the upper connecting plate 2 and the lower connecting plate 3 by bolts. After the slot connection is made through the connecting piece 23, it is fixed by bolts, and the slot connection combined with the bolt fixation can improve the stability of the connection.

[0056] Working principle: To connect two adjacent steel columns 1, the upper connecting plate 2 and the lower connecting plate 3 are respectively installed at the head and tail ends of the two connected steel columns 1, and the upper connecting plate 2 and the lower connecting plate 3 are clamped at the two ends of the steel column 1, so that the extension plate 5 fits the side of the steel column 1, and the bolts pass through the extension plate 5 and extend to the inside of the second mounting holes 6 at the four corners on both sides of the steel column 1, so that the upper connecting plate 2 and the lower connecting plate 3 are installed at both ends of the steel column 1. When the steel columns 1 connected to the upper connecting plate 2 and the lower connecting plate 3 are spliced ​​end to end, the upper connecting plate 2 connected to one of the steel columns 1 is fitted with the lower connecting plate 3 connected to the other steel column 1, and the first mounting hole 4 inside the upper connecting plate 2 overlaps with the first mounting hole 4 inside the lower connecting plate 3. The bolts pass through the two overlapping first mounting holes 4, and the nuts are rotated on the outside of the bolts to fix them. Two steel columns 1. When installing the sound insulation structure between the two horizontally distributed steel columns 1, the first sound insulation cover 9 is first installed at the rear end between the two steel columns 1. The upper connecting plate 2 and the lower connecting plate 3 are attached to both sides of the first sound insulation cover 9. The interior of the reinforcement sheet 14 inside the first sound insulation cover 9 is filled with the third silica aerogel 21, the glass fiber felt 17, the high-density rock wool 19 and the fireproof panel 20 in sequence. The second sound insulation cover 10 is installed at the front end between the two steel columns 1. After the fixing rod 13 is passed through the fourth mounting hole 11, the third mounting hole 8 and the fifth mounting hole 12 in sequence, the nut is rotated on the outside of the fixing rod 13 at the position of the fifth mounting hole 12 to fix the first sound insulation cover 9 and the second sound insulation cover 10. The splicing of the steel columns 1, the first sound insulation cover 9 and the second sound insulation cover 10 is completed one by one to realize the erection of the steel frame building.

[0057] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0058] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A sound insulation structure filled inside a steel frame building, comprising a steel column (1), characterized in that: An upper connecting plate (2) and a lower connecting plate (3) with a first mounting hole (4) are respectively provided at the upper and lower ends of the outer portion of the steel column (1), and an extension plate (5) is provided on both sides of the upper connecting plate (2) and the lower connecting plate (3). A second mounting hole (6) is provided on both sides of the steel column (1), and a bolt passes through the extension plate (5) and is embedded in the second mounting hole (6). A first soundproof cover (9) and a second soundproof cover (10) are respectively provided at the front and rear ends between the two steel columns (1). The first soundproof cover (9) is provided with a third silica aerogel (21), a glass fiber felt (17), a high-density rock wool (19) and a fireproof panel (20) in sequence toward the second soundproof cover (10). The first soundproof cover (9) Reinforcement sheets (14) are provided on both sides between the two steel columns (1), and the sides of the reinforcement sheets (14) will fit the sides of the two steel columns (1). Connecting blocks (7) are provided on the sides of the front and rear ends of the extension plate (5), and the connecting blocks (7) will contact the first sound insulation cover (9) and the second sound insulation cover (10) synchronously with the extension plate (5). The upper and lower ends of the reinforcement sheet (14) are provided with fourth mounting holes (11). The four corners of the interior of the second sound insulation cover (10) are provided with fifth mounting holes (12), and the centers of the fifth mounting hole (12), the fourth mounting hole (11) and the third mounting hole (8) overlap. The interior of the connecting block (7) is provided with the third mounting hole (8).

2. A sound insulation structure filled inside a steel frame building according to claim 1, characterized in that: The outside of the third silica aerogel (21) is vacuum-sealed by aluminum foil (15), and the first silica aerogel (16) and the second silica aerogel (18) are respectively provided on both sides of the outside of the glass fiber mat (17), and the glass fiber mat (17) is a multi-layer stacked structure. The high-density rock wool (19) is basalt melted and fiberized with a phenolic resin binder, and the fireproof panel (20) is quartz sand and lime autoclaved at high temperature.

3. The sound insulation structure filled inside a steel frame building according to claim 2, characterized in that: A fixing rod (13) is provided through the interior of the fifth mounting hole (12), the fourth mounting hole (11) and the third mounting hole (8), and a nut threadedly matched with the fixing rod (13) is provided at the position of the fifth mounting hole (12).

4. The sound insulation structure filled inside a steel frame building according to claim 1, characterized in that: Sound insulation cotton (22) is provided on the upper connecting plate (2) and the lower connecting plate (3) toward the middle of the steel column (1), and the length of the sound insulation cotton (22) is half the length of the steel column (1).

5. The sound insulation structure filled inside a steel frame building according to claim 4, characterized in that: A connecting piece (23) is provided at one end of the sound insulation cotton (22), and the connecting piece (23) and the sound insulation cotton (22) form an integrated structure.

6. The sound insulation structure filled inside a steel frame building according to claim 5, characterized in that: The exterior of the connecting piece (23) is connected to the corresponding slots between the upper connecting plate (2) and the lower connecting plate (3), and the four corners of the connecting piece (23) are fixedly connected to the upper connecting plate (2) and the lower connecting plate (3) by bolts.

7. A construction method for filling a sound insulation structure inside a steel frame building according to any one of claims 1 to 6, characterized in that: The steps include: Step 1: An upper connecting plate (2) and a lower connecting plate (3) are respectively installed at the head and tail ends of the two connected steel columns (1); Step 2: The bolts penetrate the extension plate (5) and extend to the inside of the second mounting holes (6) at the four corners on both sides of the steel column (1); Step 3: Fit the upper connecting plate (2) connected to one of the steel columns (1) to the lower connecting plate (3) connected to the other steel column (1) so that the first mounting holes (4) overlap, pass a bolt through the two overlapping first mounting holes (4), and rotate a nut on the outside of the bolt to fix the two steel columns (1); Step 4: First, the first soundproof cover (9) is installed at the rear end between the two steel columns (1), and the two sides of the first soundproof cover (9) are attached to the upper connecting plate (2) and the lower connecting plate (3); Step 5: The interior of the reinforcement sheet (14) inside the first soundproof cover (9) is filled with a third silica aerogel (21), a glass fiber felt (17), a high-density rock wool (19) and a fireproof panel (20) in sequence, and the second soundproof cover (10) is installed at the front end between the two steel columns (1); Step 6: After the fixing rod (13) passes through the fourth mounting hole (11), the third mounting hole (8) and the fifth mounting hole (12) in sequence, the nut is rotated on the outside of the fixing rod (13) at the position of the fifth mounting hole (12).

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