CN115341657A - Steel frame heat insulation system and construction method - Google Patents

Abstract

The application provides a steel frame insulation system, including: steel columns, steel beams, insulation boards and shear braces, as well as beam-column connectors for connecting steel columns and steel beams and plates for connecting steel columns and insulation boards column connectors; the thermal insulation board is sequentially provided with a thermal insulation layer, a waterproof layer, a protective layer and a reflective layer from the inside to the outside; the shear brace includes: the main rod of the shear brace and the plate connector, and the bolt holes of the main rod and plate connector bolt holes; said beam-column connectors include: square steel pipes, flange connector plates, web connector plates, scissor brace connector plates and structural reinforcement plates, and beam-column connector bolt holes; said plate-column connectors The parts include: hollow I-beam, longitudinal connecting plate, transverse connecting plate and the first pair of tension connecting pieces, as well as the first plate column bolt hole and the second plate column bolt hole; the beam-column connecting piece and the plate-column connecting piece make the steel column , steel beams, insulation boards and shear braces are connected as a whole, with high connection strength, convenient and fast connection process, and good structural integrity.

Description

A kind of steel frame insulation system and construction method

technical field

The application belongs to the technical field of construction engineering, and specifically discloses a steel frame heat preservation system and a construction method thereof.

Background technique

At present, building energy consumption accounts for about 30% of the total energy consumption of the whole society, which accounts for the largest proportion in the total energy consumption of the society. Therefore, building energy conservation has become the key to improving energy utilization and reducing pollution emissions. Therefore, it is necessary to improve the structural insulation system , Fully reduce the energy loss caused by poor insulation effect.

With the acceleration of the process of "construction industrialization and housing industrialization" in my country, the application and research of new prefabricated buildings has become one of the main hotspots in the current construction field. The prefabricated steel structure insulation system has the advantages of simple construction, fast construction speed and controllable construction quality. However, the existing prefabricated steel structure insulation system has many problems such as on-site welding work, improper treatment of thermal bridge problems, and poor insulation effect. In view of this, it is necessary to develop a steel frame thermal insulation system with simple construction, fast construction speed, good thermal insulation effect and controllable construction quality to meet the requirements of building industrialization and building energy conservation.

Contents of the invention

In view of the above-mentioned defects or deficiencies in the prior art, the present application aims to provide a steel frame thermal insulation system that can improve assembly effect, faster construction speed and higher thermal insulation effect.

In the first aspect, a steel frame thermal insulation system includes: steel columns, steel beams, thermal insulation boards and shear braces, as well as beam-column connectors for connecting steel columns and steel beams and steel columns for connecting steel columns and thermal insulation panels Plate-to-column connectors; the thermal insulation board is sequentially provided with a thermal insulation layer, a waterproof layer, a protective layer, and a reflective layer from the inside to the outside; the shear brace includes: the main rod of the shear brace, the plate connector, and the main rod bolts Holes and bolt holes for plate connectors; the beam-column connectors include: square steel pipes, flange connector plates, web connector plates, scissor brace connector plates and structural reinforcement plates, and bolt holes for beam-column connectors; The connecting piece includes: hollow I-beam, longitudinal connecting plate, transverse connecting plate and the first pair of tension connecting pieces, as well as the first plate column bolt hole and the second plate column bolt hole.

According to the technical solution provided by the embodiment of the present application, the thermal insulation boards are stacked in pairs to form a steel structure thermal insulation wall, and the thermal insulation boards are provided with triangular plate grooves, pouring holes and ventilation holes at the joints of the beams and slabs; The steel beams of the thermal insulation board are not in contact with the thermal insulation board at the junction of the beams and slabs, and the cast-in-place thermal insulation components can be filled at the junction of the beams and slabs through the pouring holes.

According to the technical solution provided by the embodiment of the present application, the main rod of the shear brace is intersected between two adjacent steel columns, and the plate connector is welded at the third bisecting point of the main rod of the shear brace ; The main rod of the shear brace and the plate-column connector are respectively provided with bolt holes for the main rod and plate connector bolt holes at the ends.

According to the technical solution provided in the embodiment of the present application, the square steel pipe is sleeved and welded on the steel column, and the eight flange connecting plates and the four web connecting plates are respectively welded on the ground parallel to the ground and perpendicular to the ground. On the outer side of the square steel pipe, the eight scissor brace connecting plates and the two structural strengthening plates are respectively welded on the outer side of the flange connecting plate and the inner side of the square steel pipe perpendicular to the ground, and the other of the two structural strengthening plates One end is welded to the steel column.

According to the technical solution provided by the embodiment of the present application, the hollow I-beam can be sleeved on the steel column, and the longitudinal connection plate and the transverse connection plate are respectively welded to the web and flange of the hollow I-beam On the outer side, both the longitudinal connecting plate and the transverse connecting plate are provided with first plate stud holes at appropriate positions at the ends.

According to the technical solution provided by the embodiment of the present application, the longitudinal connecting plate and the transverse connecting plate are arranged at intervals from the second plate stud bolt holes, and the second plate stud bolt holes are arranged at the ends of the hollow I-beam web. Set the longitudinal connection plate.

According to the technical solution provided in the embodiment of the present application, the first pair of tension connectors pass through the bolt holes of the insulation board and the first panel column to realize the connection between the insulation board and the panel column connector; the first pair of tension connections Both ends of the component are covered with L-shaped local insulation strips extending along the height direction of the steel column, and the local insulation strips are made of aerogel or other materials with good insulation performance.

According to the technical solution provided in the embodiment of the present application, the steel columns, steel beams, insulation boards, shear braces, beam-column connectors, and plate-column connectors are connected with each other by bolts made of GFRP or other low thermal conductivity materials. .

In the second aspect, a construction method of a steel frame thermal insulation system comprises the following steps: prefabricating steel columns, steel beams, thermal insulation boards, shear braces, beam-column connectors and slab-column connectors in the factory, and setting up Bolt holes; and, the thermal insulation board is provided with triangular plate grooves, pouring holes and ventilation holes at the appropriate position of the beam-slab connection; install steel columns at appropriate positions, and install plate-column connectors and beam-column connectors; hoist the steel beams To the corresponding position, connect the steel columns and steel beams through beam-column connectors; install shear braces and insulation boards; lay local insulation strips at the joints of vertical and horizontal insulation boards; pour in-situ cast-in-place insulation components through pouring holes.

To sum up, the present application discloses a steel frame thermal insulation system. Based on the above specific technical solution, the shear brace is used to connect the thermal insulation board and the beam-column connector, and the beam-column connector is used to connect the steel column, Steel beams and shear braces, the plate-column connecting piece is used to connect the steel column and the insulation board, and is connected by bolts, the construction operation difficulty is low, the construction speed is fast, and it has sufficient safety and reliability; the inside of the beam-column connecting piece A reinforcing plate is provided, which enhances the strength of the beam-column connection, makes the stress of the beam-column connection node more reasonable, improves the node strength of the beam-column connection node, and makes the overall stability of the structure better, and the beam-column The connecting piece is provided with a shear brace connecting plate, so that the shear brace can be connected with the beam-column connecting piece more conveniently and reliably.

In this application, two thermal insulation boards are superimposed to form a steel frame wall, and the thermal insulation board and the steel column are connected by the board-column connector and the shear brace; the longitudinal connection boards and the transverse connection boards of the board-column connector are arranged at intervals, and, A second plate column bolt hole is opened on the web of the hollow I-beam where the longitudinal connecting plate and the transverse connecting plate are not provided, and the second plate column bolt hole is used to connect the steel column and the plate column connector. The first pair of tension connectors of the longitudinal connecting plate and the transverse connecting plate are used to connect the thermal insulation board and the beam-column connector. The connection method is convenient, fast, safe and reliable, and does not affect its structural integrity; filling in the beam-slab connection forms cast-in-place Type thermal insulation components, which reduce the heat loss that may be caused by the beam-slab joints, enhance the thermal insulation effect of the beam-slab joints, and improve the overall thermal insulation effect; in addition, the first pair of tension connectors at the slab-column joints is covered with partial thermal insulation The strip eliminates the thermal bridge at the joint of the slab and column, further improving the thermal insulation effect.

The plate connector of the shear brace in this application is welded at the third bisection point of the main rod of the shear brace, and the two layers of insulation boards are connected by bolts passing through the plate connector, which strengthens the connection strength of the insulation board and improves the overall structure In addition, the steel columns, steel beams, insulation boards, shear braces, beam-column connectors and plate-column connectors are all connected with bolts of GFRP or other low thermal conductivity materials, which reduces the The possible loss of heat enhances the overall insulation effect.

Description of drawings

Other characteristics, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

What Fig. 1 shows is the structural representation of a kind of steel frame insulation system;

What Fig. 2 shows is the structural schematic diagram of beam-slab joint;

What Fig. 3 shows is the structural representation of shear brace;

What Fig. 4 shows is the top view of the structure of the beam-column connector;

What Fig. 5 shows is the front view of the structure of the beam-column connector;

Figure 6 is a schematic structural view of the plate-to-column connector;

What Fig. 7 shows is the structural representation of the first pair of pull connectors and local insulation strips;

What Fig. 8 shows is the structural representation of the beam plate of bolt connection;

FIG. 9 is a schematic structural view of the clipped beam and slab.

Detailed ways

The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the invention. It should also be noted that, for ease of description, only parts related to the invention are shown in the drawings.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

Please refer to the structural diagram of a steel frame insulation system shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5 and Figure 6.

In Fig. 1, a kind of steel frame thermal insulation system comprises: steel column 1, steel beam 2, thermal insulation plate 3 and shear brace 4, and the beam-column connector 5 that is used to connect steel column 1 and steel beam 2 and is used for The plate-column connector 6 connecting the steel column 1 and the insulation board 3 .

in:

Please refer to the structure of the beam-slab junction shown in Figure 2, the heat insulation board 3 is provided with a heat insulation and sound insulation layer 301, a waterproof layer 302, a protective layer 303 and a reflection layer 304 sequentially from the inside and outside, and the heat insulation and sound insulation layer 301 and the reflection layer are adopted. Layer 304 double-layer insulation enhances the thermal insulation properties of the structure.

Please refer to the structure of the shear brace shown in FIG. 3 , the shear brace 4 includes: a shear brace main rod 401 and a plate connector 402 , as well as a main rod bolt hole 403 and a plate connector bolt hole 404 .

Please refer to the structure of the beam-column connector shown in Figure 4 and Figure 5, the beam-column connector 5 includes: square steel pipe 501, flange connecting plate 502, web connecting plate 503, scissors connecting plate 504 and structural reinforcement plate 505, and beam-to-column connector bolt holes 506.

Please refer to the structure of the slab-column connector shown in FIG. A plate stud hole 604 and a second plate stud hole 605 .

After steel column 1, steel beam 2, insulation board 3, shear brace 4, beam-column connector 5 and plate-column connector 6 are manufactured, install steel column 1 at a suitable position, and install plate-column connector 6 and beam The column connector 5, and the plate-column connector 6 and the beam-column connector 5 are welded together to strengthen the structural integrity, hoist the steel beam 2 to the corresponding position, and connect the steel column 1 and the steel beam 2 through the beam-column connector 5 Install the shear brace 4 and the insulation board 3; the shear brace 4 is used to connect the adjacent steel column 1, and connect the insulation board 3; the beam-column connector 5 is used to connect the steel column 1, the steel beam 2 and the The shear brace 4 and the plate-column connector 6 are used to connect the steel column 1 and the insulation board 3, and are connected by bolts, which has low construction operation difficulty, fast construction speed, and sufficient safety and reliability.

Please refer to Fig. 2, in a preferred embodiment, the thermal insulation board 3 is stacked in pairs to form a steel structure thermal insulation wall, and the thermal insulation board 3 is provided with a triangular plate groove 7, Pouring hole 8 and ventilation hole 9. Specifically, the steel beam 2 of the thermal insulation board 3 is not in contact with the thermal insulation board 3 at the beam-slab connection, and the cast-in-place thermal insulation component 10 can be filled at the beam-slab connection through the pouring hole 8; the pouring hole 8 and the ventilation hole 9 All are realized through pre-embedded PVC pipes.

After the steel columns 1, steel beams 2, insulation boards 3, shear braces 4, beam-column connectors 5 and plate-column connectors 6 are all connected and fixed, pouring holes 8 are filled at the beam-slab joints to form cast-in-place type thermal insulation component 10, the vent hole 9 is convenient for air to be removed during the filling process, and the triangular plate groove 7 is used to strengthen the connection between the cast-in-place thermal insulation component 10 and the thermal insulation board 3; it reduces the heat loss that may be caused by the joint between the beam and the plate, and strengthens the The thermal insulation effect of the beam-slab connection.

Please refer to 3, in the above embodiment, the main shear brace bar 401 is intersected between two adjacent steel columns 1 . Specifically, the plate connector 402 is welded at the third bisection point of the main rod of the shear brace 401; Connector bolt holes 404 .

After the installation of the steel column 1 and the steel beam 2 is completed, the shear brace 4 is installed between the adjacent steel columns 1 through the beam-column connector 5, and the insulation board 3 is installed, and through the plate connector 402 and low thermal conductivity bolts, the The two layers of insulation boards 3 are connected and reinforced to strengthen the connection strength of the insulation boards and improve the integrity of the structure, and airgel is arranged outside the bolts to prevent heat loss at the bolts.

Please refer to FIG. 4 and FIG. 5 , in the above embodiment, the square steel pipe 501 is sheathed and welded on the steel column 1 . Specifically, the eight flange connecting plates 502 and the four web connecting plates 503 are welded on the outside of the square steel pipe 501 parallel to the ground and perpendicular to the ground respectively, and the eight scissors connecting plates 504 and two structural Reinforcing plates 505 are welded on the outer side of the flange connecting plate 502 and the inner side of the square steel pipe 501 respectively perpendicular to the ground, and the other ends of the two structural reinforcing plates 505 are welded to the steel column 1 .

The square steel pipe 501 and the structural reinforcement plate 505 are all welded on the steel column 1 to realize the connection between the steel column 1 and the beam-column connector 5; the flange connecting plate 502 and the web connecting plate 503 cooperate with the beam-column Connector bolt holes 506 and low thermal conductivity bolts realize the connection between steel beam 2 and beam-column connector 5; the scissor brace connecting plate 504 cooperates with beam-column connector bolt holes 506 and low thermal conductivity bolts to realize shear brace 4 and beam-column connector 5 The beam-column connector 5 is connected; it is completely connected by bolts, and the connection is convenient and highly reliable. In addition, a structural reinforcement plate 505 is provided to make the force of the beam-column connection more reasonable and improve the node strength of the beam-column connection. The overall stability of the structure is better, and a shear brace connecting plate 504 is provided, so that the shear brace 4 can be connected with the beam-column connector 5 more conveniently and reliably.

Please refer to Fig. 6, in the above embodiment, the hollow I-beam 601 can be sleeved on the steel column 1, and the longitudinal connecting plate 602 and the transverse connecting plate 603 are respectively welded on the hollow I-beam 601 The web and the outer sides of the flange, and the longitudinal connecting plate 602 and the transverse connecting plate 603 are provided with first plate stud holes 604 at appropriate positions at the ends. Specifically, the longitudinal connecting plate 602 and the transverse connecting plate 603 are spaced apart from the second plate stud hole 605, and the second plate stud hole 605 is set on the hollow I-beam 601 web without longitudinal At the connecting plate 602, the distance between the two adjacent longitudinal connecting plates 602 or transverse connecting plates 603 along the height direction of the steel column 2 is recommended to be 400-600 mm, so that the plate-column connection strength is higher and the integrity is better.

The hollow I-beam 601 cooperates with the second plate column bolt holes 605 and low thermal conductivity bolts to realize the connection between the steel column 1 and the plate column connector 6; the longitudinal connecting plate 602, the transverse connecting plate 603 and the first pair of tension plates The connecting piece 606 cooperates with the first plate column bolt hole 604 to realize the connection between the insulation board 3 and the plate column connecting piece 6; the connection method is convenient, fast, safe and reliable, and does not affect its structural integrity.

Please refer to FIG. 7 , in the above embodiment, the first pair of pull connectors 606 pass through the heat preservation board 3 and the first board stud bolt hole 604 to realize the connection between the heat preservation board 3 and the board stud connector 6; specifically Specifically, the two ends of the first pair of tension connectors 606 are covered with L-shaped local insulation strips 11 extending along the height direction of the steel column 1, and the local insulation strips 11 are made of airgel or other materials with good insulation performance.

After the installation and fixing of the shear brace 4 is completed, the insulation board 3 is hoisted to the corresponding position, and the insulation board 3 and the board-column connector 6 are connected with the first pair of pull connectors 606. The connection is convenient, fast, safe and reliable; The first pair of pull connectors 606 are covered with airgel-made local insulation strips 11, which eliminates thermal bridges at the joints of the plates and columns, and further improves the insulation effect.

Please refer to Fig. 8 and Fig. 9, as another preferred embodiment, a beam-slab connection device 12 can be provided at the beam-slab connection to strengthen the connection between the insulation board 4 and the whole; optionally, the first beam-slab can be used The connection device 121 or the second beam-slab connection device 122 .

In a specific application scenario, when the first beam-slab connection device 121 is used, as shown in FIG. The connecting plate 1211 is welded to the lower flange of the steel beam 2, and it is provided with bolt holes for passing through the second pair of tension connectors 1212; in addition, the second pair of tension connectors 1212 are arranged at intervals, and the spacing is recommended Taking it as 400-600mm, while ensuring the strength of the beam-slab connection, it can reduce the impact on the thermal insulation effect of the beam-slab connection as much as possible.

After the insulation board 3 is connected and fixed with the board-column connector 6 and the shear brace 4, the second pair of tension connectors 1212 are inserted to realize the connection and fixation of the steel beam 2 and the insulation board 3, which strengthens the The connection strength of the thermal insulation board 3 improves the integrity of the structure, and the steel beam connection plate 1211 is welded on the lower flange of the steel beam 2, which enhances the strength of the steel beam 2 and improves the safety of the structure; and, The second pair of pull connectors 1212 is made of GFRP or other materials with low thermal conductivity, which reduces the possible heat loss at the second pair of pull connectors 1212 .

In a specific application scenario, when the second beam-slab connecting device 122 is used, as shown in FIG. 1224 and spring 1225; the flange of the T-shaped connecting plate 1221 is anchored on the protective layer 203, and the web of the T-shaped connecting plate 1221 is provided with a bolt hole matching the connecting screw 1223; the The web of the T-shaped supporting plate 1222 is welded on the lower flange of the steel beam 2, and the clamping block 1224 and the spring 1225 are placed between the lower flange of the steel beam 2 and the flange of the T-shaped supporting plate 1221 between, and one end of the spring 1225 is connected to the web of the T-shaped pallet 1221, and the other end is connected to the block 1224; the connecting screw 1223 adopts a variable section form, and one end of the small section of the connecting screw 1223 is placed In the bolt holes provided on the lower flange of the steel beam 2; in addition, the second beam-slab connecting devices 122 are arranged at intervals, and the interval distance is recommended to be 400-600mm. While ensuring the beam-slab connection strength, as far as possible Minimize the impact on the thermal insulation effect of the beam-slab connection.

When the insulation board 3 is installed, the web of the T-shaped connecting plate 1221 pushes the block 1224, and the block 1224 moves toward the spring 1225, and the connecting screw 1223 drops to the T-shaped connection immediately. In the bolt holes provided on the web plate of the plate 1221, the second beam-slab connecting device 122 is activated to realize the connection between the thermal insulation board 3 and the steel beam 2; the beam-slab connection is automated, which greatly saves labor and improves the connection quality. Reliable, so that the structure has a higher overall stability; and, the T-shaped connecting plate 1221 is made of GFRP or other low thermal conductivity materials, which reduces the heat loss that may be caused by the connection between the beam and the plate.

In order to obtain a steel frame thermal insulation system described in the above embodiment, the present application also provides specific construction steps of a steel frame thermal insulation system, namely: including the following steps:

Steel columns, steel beams, insulation boards, shear braces, beam-column connectors and slab-column connectors are prefabricated in the factory, and bolt holes are opened at appropriate positions; and the insulation boards are provided with triangular plates at appropriate positions at the beam-slab connections Grooves, pouring holes and vent holes;

Install steel columns at appropriate locations, and install slab-to-column connectors and beam-to-column connectors;

Hoist the steel beam to the corresponding position, and connect the steel column and the steel beam through the beam-column connector;

Install shear braces and insulation panels;

Lay local insulation strips at the joints of vertical and horizontal insulation boards;

Cast-in-place insulation elements are poured through the pouring holes.

The above description is only a preferred embodiment of the present application and an illustration of the applied technical principle. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to the technical solution formed by the specific combination of the above-mentioned technical features, but should also cover the technical solutions made by the above-mentioned technical features without departing from the inventive concept. Other technical solutions formed by any combination of or equivalent features thereof. For example, a technical solution formed by replacing the above-mentioned features with technical features with similar functions disclosed in (but not limited to) this application.

Claims (9)

1. A steel frame insulation system, characterized in that: Including: steel columns (1), steel beams (2), insulation boards (3), shear braces (4), and beam-to-column connectors (5) for connecting steel columns (1) and steel beams (2) And a plate-column connector (6) for connecting the steel column (1) and the insulation board (3); The thermal insulation board (3) is sequentially provided with a thermal insulation layer (301), a waterproof layer (302), a protective layer (303) and a reflective layer (304) from the inside to the outside; The shear brace (4) includes: a shear brace main rod (401) and a plate connector (402), as well as a main rod bolt hole (403) and a plate connector bolt hole (404); The beam-column connector (5) includes: square steel pipe (501), flange connecting plate (502), web connecting plate (503), scissors connecting plate (504) and structural reinforcement plate (505), and beam Column connector bolt holes (506); The plate-column connector (6) includes: a hollow I-beam (601), a longitudinal connecting plate (602), a transverse connecting plate (603), a first pair of tension connectors (606), and a first plate-column bolt hole (604) and second plate stud holes (605). 2. A kind of steel frame insulation system according to claim 1, characterized in that: The thermal insulation boards (3) are stacked in pairs to form a steel structure thermal insulation wall, and the thermal insulation boards (3) are provided with triangular plate grooves (7), pouring holes (8) and through holes at the joints of beams and slabs. Stomach (9); said thermal insulation board (3) is not in contact with the steel beam (2) at the beam-slab joint, and the cast-in-place type thermal insulation member ( 10). 3. A kind of steel frame insulation system according to claim 1, characterized in that: The shear brace main rod (401) is intersected between two adjacent steel columns (1), and the plate connector (402) is welded to three equal parts of the shear brace main rod (401). point; the shear brace main rod (401) and the plate-column connector (402) are respectively provided with a main rod bolt hole (403) and a plate connector bolt hole (404) at the ends. 4. A kind of steel frame insulation system according to claim 1, characterized in that: The square steel pipe (501) is sleeved and welded on the steel column (1), and the eight flange connecting plates (502) and the four web connecting plates (503) are respectively parallel to the ground and perpendicular to the ground Welded on the outside of the square steel pipe (501), the eight scissor brace connecting plates (504) and the two structural strengthening plates (505) are respectively welded on the outside of the flange connecting plate (502) and the The inner side of the square steel pipe (501), and the other ends of the two structural reinforcement plates (505) are welded to the steel column (1). 5. A kind of steel frame insulation system according to claim 1, characterized in that: The hollow I-beam (601) can be sleeved on the steel column (1), and the longitudinal connecting plate (602) and the transverse connecting plate (603) are respectively welded on the hollow I-beam (601) The outer side of the web and the flange, and the longitudinal connecting plate (602) and the transverse connecting plate (603) are provided with first plate stud holes (604) at appropriate positions at the ends. 6. A kind of steel frame insulation system according to claim 5, characterized in that: The longitudinal connection plate (602) and the transverse connection plate (603) are spaced apart from the second plate stud holes (605), and the second plate stud holes (605) are arranged in the hollow I-beam ( 601) The web is not provided with a longitudinal connecting plate (602). 7. A kind of steel frame insulation system according to claim 1, characterized in that: The first pair of pull connectors (606) pass through the heat preservation board (3) and the first plate stud bolt hole (604), realizing the connection between the heat preservation board (3) and the board stud connector (6); The ends of the first pair of tension connectors (606) are covered with L-shaped local insulation strips (11) extending along the height direction of the steel column (1), and the local insulation strips (11) use airgel or other insulation properties good material. 8. A kind of steel frame insulation system according to claim 1, characterized in that: The steel columns (1), steel beams (2), insulation boards (3), shear braces (4), beam-column connectors (5) and plate-column connectors (6) are all connected by GFRP Or other bolts of low thermal conductivity material. 9. A construction method for a steel frame thermal insulation system, characterized in that: Include the following steps: Steel columns, steel beams, insulation boards, shear braces, beam-column connectors and slab-column connectors are prefabricated in the factory, and bolt holes are opened at appropriate positions; and the insulation boards are provided with triangular plates at appropriate positions at the beam-slab connections Grooves, pouring holes and vent holes; Install steel columns at appropriate locations, and install slab-to-column connectors and beam-to-column connectors; Hoist the steel beam to the corresponding position, and connect the steel column and the steel beam through the beam-column connector; Install shear braces and insulation panels; Lay local insulation strips at the joints of vertical and horizontal insulation boards; Cast-in-place insulation elements are poured through the pouring holes.

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