CN103276839B - The how high-rise assembled steel framework-eccentrical braces of a kind of hollow irregular column - Google Patents

Abstract

The invention relates to a hollow special-shaped column multi-story assembled steel frame-eccentric support system belonging to the technical field of structural engineering, including an assembled truss plate, an assembled flange column and an eccentric support member, and the assembled truss plate includes Lattice truss beams with angle steel webs, column base nodes and floor slabs; the fabricated truss panels are prefabricated in the factory, and the fabricated truss panels are spliced together through their beam end sealing plates or column base nodes at the construction site to form a frame structure The beam-slab layer; the beam-slab layer of the frame structure is connected up and down through the assembled flange column to form a multi-layer steel frame structure, and the assembled flange column is located on the column base node of the assembled truss plate; On the basis of the above-mentioned steel frame structure, the eccentric support member is connected to the bottom of the truss beam or column in the beam-slab layer of the frame structure as a lateral force-resistant member; the fabricated truss plate, fabricated flange column and eccentric support member All are prefabricated in the factory and assembled by bolts at the construction site.

Description

A hollow special-shaped column multi-story assembled steel frame-eccentric support system

technical field

The invention relates to a hollow special-shaped column multi-story assembled steel frame-eccentric support system, which belongs to the technical field of structural engineering.

Background technique

my country's annual urban and rural housing area is 2 billion square meters, of which more than 80% are high-energy buildings, and the energy consumption per unit building area in my country is more than twice that of developed countries. According to the statistics of the China Iron and Steel Association, my country's steel output exceeded 700 million tons in 2011, ranking first in the world's steel output for 16 consecutive years. Our country is less than 4%. As the country with the largest construction scale and steel output in the world, China lags behind seriously in the development of steel structures for houses (including residences).

The implementation of my country's "Twelfth Five-Year Plan" has brought the construction industry into the era of energy conservation, emission reduction and green environmental protection. The "Green Building Evaluation Standard" issued by the Ministry of Housing and Urban-Rural Development defines green buildings as: To save resources (land, energy, water, and materials), protect the environment, and reduce pollution to the greatest extent, provide people with healthy, applicable, and efficient use of space, and a building that coexists harmoniously with nature. This concept is an important strategic transformation for changing the mode of economic growth and promoting sustainable development, and it truly provides a major opportunity for the innovation and industrialization of the corresponding system of steel structures for houses (residential buildings) in my country.

At present, the systematic research on high-rise steel structure residences at home and abroad is in its infancy, and the innovation of industrially assembled high-rise steel structure systems is imperative. A lot of welding is used in the construction of traditional steel structure residential buildings, the construction speed is slow, and the pollution to the environment is serious. The most important thing is that the quality of the welds is not suitable for control, which seriously affects the safety performance of the building.

Contents of the invention

The invention proposes a hollow special-shaped column multi-story assembled steel frame-eccentric support system belonging to the technical field of structural engineering. Its purpose is to combine modularization, factoryization, standardization and assembly in the production and construction of the steel structure system, realize factory production, on-site quick assembly, and improve the construction speed on the premise of ensuring the construction quality. The construction period is reduced and the project cost is reduced.

The multi-story prefabricated steel frame-eccentric support system with hollow special-shaped columns includes a prefabricated truss plate and a prefabricated flange column; and the floor slab, the lattice truss beam is connected with other lattice truss beams or column base nodes through the beam end sealing plate to form the bottom frame of the truss slab, and then the floor is supported in the bottom frame of the truss slab and connected to form Assembled truss panels; the fabricated truss panels are prefabricated in the factory, and the assembled truss panels are spliced with each other through their beam end seals or column base nodes at the construction site to serve as frame structure beam slab layers; the frame structure beam slabs Layers are connected up and down by assembled flange columns to form a multi-layer steel frame structure, and the assembled flange columns are located on the column base nodes of the assembled truss plates; the assembled truss plates and the assembled flange columns All are prefabricated in the factory and assembled by bolts at the construction site.

The hollow special-shaped column multi-storey assembled steel frame-eccentric support system, the assembled truss plate includes three specifications, namely A plate, B plate and C plate;

The A plate includes a column base node 15, a three-way column base node 23, a double-channel steel truss long main beam 16, a double-channel steel truss main beam 17, a single-channel steel truss long main beam 18, and a single-channel steel truss secondary beam 19 , connection plate I20, connection plate II21 and floor slab 22, characterized in that: double channel steel truss main girder 17 and double channel steel truss long main girder 16 are perpendicular to each other, and both pass through the beam end sealing plate, and connect with the two-way column base node 15 The channel steel connecting plates are connected by bolts, and a connecting plate II21 is welded at the upper and lower ends of the joint, and the two ends of the connecting plate II21 are respectively connected to the upper and lower sides of the double channel steel truss main beam 17 and the double channel steel truss long main beam 16 On the chord; the other end of the double-channel steel truss main beam 17 is connected with a single-channel steel truss long main beam 18 horizontal to the double-channel steel truss long main beam 16, and the end of the double-channel steel truss main beam 17 is connected to the single-channel The upper and lower chords at the end of the long steel truss girder 18 and the beam end sealing plate are respectively welded and connected, and the double-channel steel truss main girder 17 is connected to the single-channel steel truss long main girder 18 through connecting plates I20 of the upper and lower sections. And the upper and lower chords of the double-channel steel truss main beam 17 and the single-channel steel truss long main beam 18 are welded and connected with two connecting plates I20; the single-channel steel truss secondary beam 19 is connected to the double-channel steel truss long main beam 16 and the other end of the long main girder 18 of the single-channel steel truss, horizontally opposite to the main girder 17 of the double-channel steel truss, the upper and lower chords of one end of the secondary beam 19 of the single-channel steel truss and the other end of the long main girder 18 of the single-channel steel truss Rods and beam end sealing plates are connected by welding respectively, and the secondary beam 19 of the single-channel steel truss and the long main beam 18 of the single-channel steel truss are connected through two connecting plates I20 connected at the upper and lower chords; the secondary beam of the single-channel steel truss The other end of the beam 19 is connected to the long main girder 16 of the double-channel steel truss through two connecting plates II21 connected at the upper and lower chords; 17. The long main girder 18 of the single-channel steel truss and the secondary beam 19 of the single-channel steel truss form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single-channel steel truss secondary in the two rectangular frames Beams 19 are aligned and connected by bolts, and two long main girders 16 of double-channel steel trusses are located on a straight line, two long main girders 18 of single-channel steel trusses are located on a straight line; two long main girders 16 of double-channel steel trusses The upper and lower ends of the two-way column base node 15 and the three-way column base node 23 are respectively connected by bolts to the channel steel connecting plates in two opposite directions through the beam end sealing plate, and the two single channel steel truss secondary beams 19 are connected On the channel steel connecting plate perpendicular to the two directions on the three-way column base node 23; the bottom frame is connected to the two floor slabs 22 through the upper anchorage of the upper chord of the truss beam; all members of the A plate are Prefabricated and assembled in factories;

The B plate includes double-channel steel truss main beam 17, single-channel steel truss long main beam 18, single-channel steel truss secondary beam 19, connecting plate I20, connecting plate II21 and floor 22, double-channel steel truss main beam 17 and single The long main girders 18 of the channel steel truss are perpendicular to each other, and the ends of the double channel steel truss main girder 17 are welded to the upper and lower chords and beam end sealing plates at the end of the single channel steel truss long main girder 18 respectively, and then pass through the upper and lower sections The connection plate I20 of the double-channel steel truss girder is connected, and the upper and lower chords of the double-channel steel truss main girder 17 and the single-channel steel truss long main girder 18 are welded and connected with the two connecting plates I20; the other end of the double-channel steel truss The connecting plate II21 of the first section is connected with another single-channel steel truss long main beam 18 horizontal to the single-channel steel truss long main beam 18, and the double-channel steel truss main beam 17 is connected with the single-channel steel truss long main beam 18 The upper and lower chords are connected by welding with two connecting plates II21; the single-channel steel truss secondary beam 19 is connected to the other end of the two single-channel steel truss long main beams 18, and is horizontally opposite to the double-channel steel truss main beam 17 , the connection form of single-channel steel truss secondary beam 19 and two single-channel steel truss long main beams 18 is the same as the connection form of double-channel steel truss main beam 17 and two single-channel steel truss long main beams 18; The double-channel steel truss main girder 17, two single-channel steel truss long main girders 18, and single-channel steel truss secondary beams 19 form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; The single-channel steel truss secondary beams 19 in the two rectangular frames are aligned and connected by bolts, and two single-channel steel truss long main girders 18 of one rectangular frame are horizontally opposite to each other and two single-channel steel trusses of the other long direction frame are horizontally opposite The long main girders 18 of the truss are respectively located on a straight line; the bottom frame is connected to the two floor slabs 22 through the upper anchors of the upper chord of the truss girder; all components of the B plate are prefabricated and assembled in the factory;

The C plate includes a three-way column base node 23, a four-way column base node 24, a double-channel steel truss main beam 17, a single-channel steel truss long main beam 18, a single-channel steel truss secondary beam 19, a connecting plate 120, and a connecting plate II21 and floor slab 22, double channel steel truss main girder 17 and single channel steel truss long main girder 18 are perpendicular to each other, and both pass through the beam end sealing plate, and the two adjacent channel steel connecting plates on the three-way column base node 23 It is connected by bolts, and the upper and lower ends of the connection are respectively welded with a connecting plate II21, and the two ends of the connecting plate II21 are respectively connected to the upper and lower chords of the double-channel steel truss main beam 17 and the single-channel steel truss long main beam 18; The other end of the channel steel truss main beam 17 is connected to another single channel steel truss long main beam 18 horizontal to the single channel steel truss long main beam 18 by welding, and the end of the double channel steel truss main beam 17 is connected to the single channel The upper and lower chords at the end of the long steel truss girder 18 and the beam end sealing plate are respectively welded and connected, and the double-channel steel truss main girder 17 is connected to the single-channel steel truss long main girder 18 through connecting plates I20 of the upper and lower sections. And the upper and lower chords of the double-channel steel truss main girder 17 and the single-channel steel truss long main beam 18 are connected by welding with two connecting plates I20; The other end of the main girder 18 is horizontally opposite to the main girder 17 of the double-channel steel truss. connected by welding, and the single-channel steel truss secondary beam 19 is connected with the single-channel steel truss long main beam 18 through two connecting plates I20 connected at the upper and lower chords; the other end of the single-channel steel truss secondary beam 19 is connected with the The long main girders 18 of the single-channel steel truss are connected by two connection plates II21 connected at the upper and lower chords; The truss secondary beam 19 forms a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single channel steel truss secondary beam 19 in the two rectangular frames is aligned and connected by bolts, and a rectangular frame is horizontal The two opposite long main girders 18 of single channel steel truss and the two long main girders 18 of single channel steel truss horizontally opposite to each other in the longitudinal direction frame are respectively located on a straight line; the upper and lower ends of the two long main girders 18 of single channel steel truss They are all connected by bolts to the channel steel connecting plates in the two opposite directions of the three-way column base node 23 and the four-way column base node 24 through the beam end sealing plate, and the two single-channel steel truss secondary beams 19 are connected in the four-way The channel steel connecting plate perpendicular to the two directions on the column base node 24; the bottom frame is connected to the two floor slabs 22 through the anchors on the upper chord of the truss beam; all the components of the C plate are in the factory prefabrication and assembly;

In the hollow special-shaped column multi-story assembled steel frame-eccentric support system, the A plate and the B plate are horizontally aligned with the A plate and the B plate, and the double-channel steel truss main girder 17 of the A plate is not connected to the column base. One end and the double-channel steel truss main beam 17 of the B plate have one end of the connecting plate I20 to be spliced with bolts through the beam end sealing plate; One end of the single-channel steel truss secondary beam 19 with the connection plate I20 splices the beam end sealing plate through bolts; the single-channel steel truss long main beam 18 of the A plate and the single-channel steel truss long main beam 18 node plate of the B plate The single beams are spliced at intervals of a fixed distance by bolts, so that two single beams are connected into double beams; then bolts are used to cover the upper and lower sides of the splicing joints; thus the splicing of A and B plates is completed;

In the hollow special-shaped column multi-story assembled steel frame-eccentric support system, the B plate and the C plate are horizontally aligned with the B plate and the C plate, and the double-channel steel truss main girder 17 of the B plate has the connecting plate II21 One end and the three-way column base node 23 of the C plate are connected with the exposed channel steel connecting plate through the beam end sealing plate with bolts; the end of the single channel steel truss secondary beam 19 of the B plate with the connecting plate II21 is connected with the four-way column of the C plate The exposed channel steel connecting plates of the seat nodes 24 are connected by bolts through the beam end sealing plates; The channel steel connecting plates in the direction are connected by bolts, and the other end of the long main girder 18 of the single channel steel truss of the B plate is respectively passed through the beam end sealing plate and the three-way column base node 23 of the C plate and is perpendicular to the exposed channel steel. The channel steel connecting plates are connected by bolts through the beam end sealing plate; the single beams are fixed at intervals by bolts at the node plates of the long main girder 18 of the single channel steel truss of plate B and the long main girder 18 of the single channel steel truss of plate C The distance is spliced so that two single girders are connected to form a double girder; then the upper and lower sides of the splicing joint are bolted to cover the plate; thus the splicing of the B plate and the C plate is completed.

The multi-storey assembled steel frame-eccentric support system of the hollow special-shaped column, the assembled truss plate is respectively connected with the assembled flange column by bolts at the node of the column base to form a frame structure;

The hollow special-shaped column multi-story assembled steel frame-eccentric support system, the beam involved is a truss beam composed of upper and lower chords 5, web members 2 and gusset plates 3 spliced, wherein the upper and lower chords use channel steel, or Use channel steel, or use square steel pipes, use angle steel for the web 2, and the angle between the web and the chord is 30°-60°; and it is divided into single beam and double beam, and the single beam is provided with connection holes at a fixed distance, which is convenient for installation on the plate. When splicing with the plate, use bolts to splice two pieces of single beams into double beams. For double beams, the connection of web 2, upper and lower chords 5 and gusset plate 3 is connected by bolts or welding, which are all processed in the factory;

Or use a truss beam composed of angle steel and filler plate, including upper and lower chord 1, web 2 and fill plate 4, where both upper and lower chord 1 and web 2 are made of angle steel, and the angle between the web and the chord is 30°-60 It is divided into single beam and double beam. The single beam is provided with connection holes at a fixed distance, which is convenient for splicing two single beams into double beams with bolts when splicing plates. For double beams, angle steel and filling plate The connections are bolted or welded, all of which are processed in the factory.

The hollow special-shaped column multi-high-rise assembled steel frame-eccentric support system has three types of column bases, which are two-way column bases, three-way column bases and four-way column bases; the flange plate I7 is placed on the hollow L-shaped column 11 is welded at the top and bottom, and then two pieces of channel steel 9 are welded to the adjacent sides of the hollow L-shaped column 11 to form a two-way column seat; the flange plate I7 is welded at the top and bottom of the hollow T-shaped column 10, and then the three pieces of channel steel are welded together. The steel 9 is welded to the three sides of the hollow T-shaped column 11 to form a three-way column seat; the flange plate I7 is welded on the upper and lower sides of the hollow cross-shaped column 8, and then four pieces of channel steel 9 are welded to the four sides of the hollow cross-shaped column 8 to form a Four-way column base; among them, there are bolt holes on the web plate of the channel steel 9, which is spliced with the upper end sealing plate of the beam with bolts.

In the multi-story assembled steel frame-eccentric support system of hollow special-shaped columns, the assembled flange columns are composed of hollow L-shaped columns 11, hollow T-shaped columns 10, hollow cross-shaped columns 8 and flange plates II14, French Composed of blue plate III13 and flange plate IV12, extending the ordinary flange plate in two directions is flange plate II14, extending in three directions is flange plate III13, and extending in four directions is flange plate IV12 ; According to the shape of the flange plate, it can be divided into three types of flange columns, which are double-sided flange columns, three-side flange columns and four-side flange columns; the flange plate II14 is placed on the hollow L-shaped column 11 The upper and lower parts are welded to form a bilateral flange column; the flange plate III13 is welded to the upper and lower positions of the hollow T-shaped column 10 to form a three-sided flange column; the flange plate IV12 is welded to the upper and lower positions of the hollow cross-shaped column 8 to form a A four-sided flange column is formed; the three assembled flange columns are all manufactured in the factory.

The floor slab uses profiled steel composite floor slabs, or reinforced concrete floor slabs, or OSB particle boards.

The beneficial effect of the present invention is that, in the above-mentioned hollow special-shaped column multi-story assembled steel frame-eccentric support system, the beams used are all truss beams. Since the belly gap of the beams is large, it is convenient for pipelines to pass through, effectively increasing The headroom of the room.

The hollow special-shaped column multi-story assembled steel frame-eccentric support system completely adopts bolts for on-site assembly, cancels the traditional on-site welding method and concrete pouring method, effectively guarantees the construction quality, and completely avoids concrete pouring and steel welding The environmental pollution caused by the site construction has achieved the three-no standard of "no water, no fire, and no dust", reducing the occurrence of fire and other hazardous accidents. When the components are dismantled, the present invention can efficiently recycle, reduce construction waste, truly realize the concept of green environmental protection, and is a green and sustainable steel structure system.

The hollow special-shaped column multi-high-rise assembled steel frame-eccentric support system proposed by the present invention is a subversion of traditional steel structure residential buildings, and truly realizes the factoryization, modularization, assembly and standardization of steel structure residential buildings, and fully utilizes the Advantages of steel structure houses. Compared with traditional steel structure buildings, it has many advantages such as high safety performance, fast construction speed, less environmental pollution, fewer safety accidents and low project cost.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the splicing plane layout diagram of the assembled truss panel of the present invention

Fig. 2 is a schematic diagram of the fabricated truss plate channel steel truss beam with gusset plate of the present invention

Fig. 3 is a schematic diagram of the assembled truss plate with gusset plate angle steel truss beam of the present invention

Fig. 4 is a schematic diagram of the assembled truss plate channel steel truss beam without gusset plate of the present invention

Fig. 5 is a schematic diagram of a square steel pipe truss beam with assembled truss plates of the present invention with gusset plates

Fig. 6 is a schematic diagram of the four-way column seat of the assembled truss plate of the present invention

Fig. 7 is a schematic diagram of the three-way column seat of the assembled truss plate of the present invention

Fig. 8 is a schematic diagram of the two-way column seat of the assembled truss plate of the present invention

Fig. 9 is a schematic diagram of the assembled flange column of the present invention

Fig. 10 is an exploded view of unit A of the assembled truss plate of the present invention

Fig. 11 is an assembled drawing of unit A of the fabricated truss plate of the present invention

Fig. 12 is an exploded view of unit B of the assembled truss plate of the present invention

Fig. 13 is an assembled drawing of unit B of the prefabricated truss plate of the present invention

Fig. 14 is an exploded view of unit C of the assembled truss plate of the present invention

Fig. 15 is an assembled drawing of unit C of the prefabricated truss plate of the present invention

Fig. 16 is an assembled drawing of the fabricated truss panels A, B and C units of the present invention

Fig. 17 is an exploded view of the assembled truss plate node 1 of the present invention

Fig. 18 is an exploded view of the assembled truss plate node 2 of the present invention

Fig. 19 is an exploded view of the assembled truss plate node 3 of the present invention

Fig. 20 is an exploded view of the assembled truss plate node 4 of the present invention

Fig. 21 is an exploded view of the assembled truss plate node 5 of the present invention

Fig. 22 is an exploded view of the assembled truss plate node 6 of the present invention

Fig. 23 is an exploded view of the assembled truss plate node 7 of the present invention

Fig. 24 is an exploded view of the assembled truss plate node 8 of the present invention

Fig. 25 is an exploded view of the assembled truss plate node 9 of the present invention

Fig. 26 is an exploded view of the assembled truss plate node 10 of the present invention

Fig. 27 is an exploded view of the assembled truss plate node 11 of the present invention

Fig. 28 is an exploded view of the assembled truss plate node 12 of the present invention

Fig. 29 is an exploded view of the connection form between the bilateral flange column and the node of the present invention

Fig. 30 is an exploded view of the connection form between the three-sided flange column and the node of the present invention

Figure 31 is an exploded view of the connection form between the four-sided flange column and the node of the present invention

Fig. 32 is a schematic diagram of the industrialized multi-high-rise assembled steel structure frame-eccentric gantry type support system I of the present invention

Fig. 33 is a schematic diagram of the industrialized multi-high-rise assembled steel frame-eccentric gantry support system II of the present invention

Fig. 34 is a schematic diagram of the industrialized multi-high-rise assembled steel structure frame-eccentric herringbone support system of the present invention

Fig. 35 is a schematic diagram of the industrialized multi-high-rise assembled steel structure frame-eccentric V-shaped support system of the present invention

Fig. 36 is a schematic diagram of the industrialized multi-story assembled steel structure frame-eccentric single-slope support system of the present invention

Fig. 37 is a detailed view of node 13 of the industrialized multi-story assembled steel structure frame-eccentric support system of the present invention

Fig. 38 is a detailed diagram of node 14 of the industrialized multi-high-rise assembled steel structure frame-eccentric support system of the present invention

Fig. 39 is a detailed diagram of node 15 of the industrialized multi-high-rise assembled steel structure frame-eccentric support system of the present invention

Fig. 40 is a detailed view of node 16 of the industrialized multi-high-rise assembled steel structure frame-eccentric support system of the present invention

In the figure 1. Upper and lower chord I, 2. Web member, 3. Gusset plate, 4. Filler plate, 5. Upper and lower chord II, 6. Upper and lower chord III, 7. Flange plate I, 8. Hollow L Type column, 9. Channel steel, 10. Hollow T-shaped column, 11. Hollow cross-shaped column, 12. Flange plate IV, 13. Flange plate III, 14. Flange plate II, 15. Two-way column seat, 16. Long main beam of double channel steel truss, 17. Main beam of double channel steel truss, 18. Long main beam of single channel steel truss, 19. Secondary beam of single channel steel truss, 20. Connection plate I, 21. Connection plate II, 22. Floor, 23. Three-way column base joint, 24. Four-way column base joint, 25. Truss beam, 26. Prefabricated flange column, 27. Diagonal brace, 28. Cantilever rod I, 29. Cantilever rod II, 30. Cantilever rod III.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing:

As shown in Figure 1, the splicing position of the assembled truss plate of the present invention is set in the middle of the main girder, where the shear force and bending moment are relatively small. From the perspective of structural mechanics, the setting of the splicing position is reasonable.

As shown in accompanying drawing 2, in the hollow special-shaped column multi-story assembled steel frame-eccentric support system of the present invention, the beam involved is a truss beam composed of channel steel and gusset plate splicing, including upper and lower chords II5, Web member 2 and gusset plate 3, in which the upper and lower chord I5 and web member 2 are respectively made of channel steel and angle steel, and are divided into single channel steel beam and double channel steel beam according to the upper and lower chords, and the single channel steel beam is connected at a fixed distance Holes are used to splice two single-channel steel beams into double-channel steel beams with bolts when splicing plates. For double-channel steel beams, channel steel and gusset plates are connected by bolts or welding, which are all processed in the factory Finish;

As shown in Figure 3, or use a truss beam composed of angle steel and gusset plate splicing, including upper and lower chords I1, webs 2 and gusset plates 3, where both upper and lower chords I1 and webs 2 are made of angle steel, and are divided into Single-angle steel beams and double-angle steel beams, single-angle steel beams are provided with connecting holes at a fixed distance, which is convenient for splicing two single-angle steel beams into double-angle steel beams with bolts when splicing plates and plates. For double-angle steel beams , the connection between the angle steel and the gusset plate is connected by bolts, or by welding, which are all processed in the factory;

As shown in Figure 4, or use a truss beam spliced by angle steel and filler plate, including upper and lower chords I1, web members 2 and filler plates 4, where both upper and lower chord I1 and web members 2 use angle steel, and are divided into Single-angle steel beams and double-angle steel beams, single-angle steel beams are provided with connecting holes at a fixed distance, so that two pieces of single-angle steel beams can be spliced into double-channel steel beams with bolts when splicing plates. For double-angle steel beams , The channel steel and the filler plate are connected by bolts or welding, which are all processed in the factory;

As shown in Figure 5, or use a truss beam composed of channel steel, square steel pipes and gusset plates, including upper and lower chords III6, web members 2 and gusset plates 3, wherein the upper and lower chords III6 use square steel pipes, and web members 2 Channel steel is used, and it is divided into unilateral steel pipe girder and double steel pipe girder. The unilateral steel pipe girder is provided with connection holes at a fixed distance, so that two single steel pipe girders can be spliced into double steel pipe girders with bolts when splicing plates. Steel pipe beams on both sides, channel steel, square steel pipes and gusset plates are connected by bolts or welding, all of which are processed in the factory;

For the above four beam cross-section forms, the splicing method of splicing single beams into double beams through bolts has good rigidity and stability. Since the belly space of the truss beam is large, it is convenient for pipelines to pass through, effectively increasing the net height of the room.

In the hollow special-shaped column multi-story assembled steel frame-eccentric support system according to the present invention, as shown in the accompanying drawings 6-8, the column base has three forms, namely two-way column base, three-way column base and four-way column base. column seat; weld the flange plate I7 on the upper and lower parts of the hollow L-shaped column 11, and then weld two pieces of channel steel 9 to the adjacent sides of the hollow L-shaped column 11 to form a two-way column seat; weld the flange plate I7 on the hollow L-shaped column 11 The top and bottom of the T-shaped column 10 are welded, and then three pieces of channel steel 9 are welded to the three sides of the hollow T-shaped column 10 to form a three-way column seat; the flange plate I7 is welded on the upper and lower sides of the hollow cross-shaped column 8, and then the four pieces The channel steel 9 is welded to the four sides of the hollow cross-shaped column 8 to form a four-way column seat; the web of the channel steel 9 has bolt holes, which are convenient for splicing with the upper end sealing plate of the beam with bolts.

In the hollow special-shaped column multi-high-rise assembled steel frame-eccentric support system according to the present invention, as shown in Figure 9, the assembled flange column consists of a hollow L-shaped column 11, a flange plate II14, a hollow T-shaped column 10 and Flange plate III13, hollow cross-shaped column 8 and flange plate IV12 are composed. Extending the ordinary flange plate in two directions is flange plate II14, extending in three directions is flange plate III13, and extending in four directions is flange plate III13. The extension is the flange plate IV12; according to the shape of the flange plate, it can be divided into three types of flange columns, which are double-sided flange columns, three-side flange columns and four-side flange columns; II14 is welded on the upper and lower sides of the hollow L-shaped column 11 to form a double-sided flange column; weld the flange plate III13 on the upper and lower sides of the hollow T-shaped column 10 to form a three-sided flange column; weld the flange plate IV12 on the hollow cross-shaped The upper and lower parts of the column 8 are welded to form a four-sided flange column; the three assembled flange columns are all manufactured in the factory.

In the multi-story prefabricated steel frame-eccentric support system with hollow special-shaped columns, as shown in Figure 10-11, the A plate includes column base nodes 15, three-way column base nodes 23, double channel steel truss long main girders 16 , double-channel steel truss main beam 17, single-channel steel truss long main beam 18, single-channel steel truss secondary beam 19, connecting plate I20, connecting plate II21 and floor slab 22, characterized in that: double-channel steel truss main beam 17 and double The long main girders 16 of the channel steel truss are perpendicular to each other, and are connected with the channel steel connecting plates on the two-way column base node 15 by bolts through the beam end sealing plates, and a connecting plate II21 is welded at the upper and lower end faces of the joint, and the connecting plate The two ends of II21 are respectively connected to the upper and lower chords of the double channel steel truss main beam 17 and the double channel steel truss long main beam 16; the other end of the double channel steel truss main beam 17 is connected with the double channel steel truss long main beam 16 The horizontal single channel steel truss long main girder 18, the ends of the double channel steel truss main girder 17 are respectively welded to the upper and lower chords and beam end sealing plates at the end of the single channel steel truss long main girder 18, and the double channel steel truss The main beam 17 of the truss and the long main beam 18 of the single-channel steel truss are connected through the connection plate I20 of the upper and lower sections, and the upper and lower chords of the main beam 17 of the double-channel steel truss and the long main beam 18 of the single-channel steel truss are connected with two The connecting plate I20 is welded and connected; the single-channel steel truss secondary beam 19 is connected to the other end of the double-channel steel truss long main beam 16 and the single-channel steel truss long main beam 18, and is horizontally opposite to the double-channel steel truss main beam 17, One end of the single-channel steel truss secondary beam 19 is welded to the upper and lower chords of the other end of the single-channel steel truss long main beam 18 and the beam end sealing plate respectively, and the single-channel steel truss secondary beam 19 is connected to the single-channel steel truss long main beam. The beams 18 are connected by two connecting plates I20 connected at the upper and lower chords; Two connecting plates II21 are connected; the long main girder 16 of the double-channel steel truss, the main girder 17 of the double-channel steel truss, the long main girder 18 of the single-channel steel truss, and the secondary beam 19 of the single-channel steel truss form a rectangular frame; The two rectangular frames are connected to form a spliced bottom frame; the single-channel steel truss secondary beams 19 in the two rectangular frames are aligned and connected by bolts, and the two double-channel steel truss long main beams 16 are located on a straight line, The two long main girders 18 of single-channel steel trusses are located on a straight line; the upper and lower ends of the two long main girders of double-channel steel trusses 16 are respectively connected to two-way column base nodes 15 and three-way column base nodes 23 through beam end sealing plates The channel steel connecting plates in the opposite direction are connected by bolts, and the two single channel steel truss secondary beams 19 are connected to the channel steel connecting plates perpendicular to the two directions on the three-way column base node 23; The bottom frame is connected to the two floor slabs 22 through the upper anchors of the upper chord of the truss beam; all components of the A-slab are prefabricated and assembled in the factory;

In the hollow special-shaped column multi-story fabricated steel frame-eccentric support system, as shown in Figure 12-13, the B plate includes double channel steel truss main girder 17, single channel steel truss long main girder 18, single channel steel truss Truss secondary beam 19, connection plate I20, connection plate II21 and floor slab 22, double channel steel truss main beam 17 and single channel steel truss long main beam 18 are perpendicular to each other, double channel steel truss main beam 17 ends and single channel steel truss long The upper and lower chords at the end of the main girder 18 and the beam end sealing plate are respectively welded and connected, and then connected through the connecting plate I20 of the upper and lower sections, and the upper and lower sides of the double channel steel truss truss main girder 17 and the single channel steel truss long main girder 18 The chords are connected by welding with two connecting plates I20; the other end of the double-channel steel truss main girder 17 is connected with another single-channel steel truss long main beam 18 horizontal to the single-channel steel truss long main beam 18 through the connecting plate II21 of the upper and lower sections. The long main girder 18 of the channel steel truss, and the upper and lower chords of the double channel steel truss main girder 17 and the long main beam 18 of the single channel steel truss are connected by welding with two connecting plates II21; The other end of the two single-channel steel truss long main beams 18 is horizontally opposite to the double-channel steel truss main beam 17, and the connection form between the single-channel steel truss secondary beam 19 and the two single-channel steel truss long main beams 18 is the same as described The double-channel steel truss main girder 17 has the same connection form as the two single-channel steel truss long main girders 18; The secondary beams 19 form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single channel steel truss secondary beams 19 in the two rectangular frames are aligned and connected by bolts, and a rectangular frame is horizontally opposite The two long main girders 18 of the single-channel steel truss and the two long main girders 18 of the horizontally opposite single-channel steel truss of the other long direction frame are respectively located on a straight line; A floor slab 22 is connected; All components of the B slab are prefabricated and assembled in the factory;

In the multi-story prefabricated steel frame-eccentric support system with hollow special-shaped columns, as shown in Figure 14-15, the C plate includes a three-way column base node 23, a four-way column base node 24, and a double-channel steel truss main beam 17. Long main girder 18 of single channel steel truss, secondary beam 19 of single channel steel truss, connecting plate I20, connecting plate II21 and floor slab 22, main beam 17 of double channel steel truss and long main girder 18 of single channel steel truss are perpendicular to each other, and Both pass through the beam end sealing plate, and are connected with two adjacent channel steel connecting plates on the three-way column base node 23 by bolts, and a connecting plate II21 is respectively welded on the upper and lower end faces of the joint, and the two ends of the connecting plate II21 are respectively Connected to the upper and lower chords of the double-channel steel truss main beam 17 and the single-channel steel truss long main beam 18; A long main girder 18 of a single-channel steel truss, and the ends of the main girder 17 of a double-channel steel truss are respectively welded to the upper and lower chords and beam end sealing plates at the end of the long main girder 18 of a single-channel steel truss, and the double-channel steel truss The main beam 17 of the truss and the long main beam 18 of the single-channel steel truss are connected through the connection plate I20 of the upper and lower sections, and the upper and lower chords of the main beam 17 of the double-channel steel truss and the long main beam 18 of the single-channel steel truss are connected with two The connecting plate I20 is welded and connected; the single-channel steel truss secondary beam 19 is connected to the other end of the two single-channel steel truss long main beams 18, and is horizontally opposite to the double-channel steel truss main beam 17, and the single-channel steel truss secondary beam 19 One end is welded to the upper and lower chords of the long main girder 18 of the single-channel steel truss and the beam end sealing plate respectively, and the secondary beam 19 of the single-channel steel truss and the long main girder 18 of the single-channel steel truss are connected by The two connecting plates I20 at the upper and lower chords are connected; the other end of the single channel steel truss secondary beam 19 is connected with the single channel steel truss long main beam 18 through two connecting plates II21 connected at the upper and lower chords; The main girder 17 of the double-channel steel truss, two long main girders 18 of the single-channel steel truss, and the secondary beam 19 of the single-channel steel truss form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; The single-channel steel truss secondary beams 19 in the two rectangular frames are aligned and connected by bolts, and the two single-channel steel truss long main beams 18 of one rectangular frame are horizontally opposite to each other and the other long-direction frame is horizontally opposite to each other. The long main girders 18 of the steel truss are respectively located on a straight line; The channel steel connecting plates are connected by bolts, and the two single channel steel truss secondary beams 19 are connected to the channel steel connecting plates perpendicular to the two directions on the four-way column base node 24; the bottom frame passes through The upper anchors of the upper chord of the truss beam are connected to the two floor slabs 22; all components of the C slab are prefabricated and assembled in the factory;

In the hollow special-shaped column multi-story assembled steel frame-eccentric support system according to the present invention, as shown in Figure 16, the A board and the B board are horizontally aligned with the A board and the B board, and the double grooves of the A board are One end of the steel truss main girder 17 that is not connected to the column seat and the end of the double-channel steel truss main girder 17 of the B plate with the connecting plate I20 are spliced with bolts through the beam end sealing plate; the single-channel steel truss secondary beam 19 of the A plate One end of the single-channel steel truss truss secondary beam 19 without connecting column base and the end of the single-channel steel truss truss beam 19 of the B plate splicing the beam end sealing plate by bolts; The single-channel steel truss truss long main girder 18 joint plate is spliced by bolts at intervals of a fixed distance, so that two single girders are connected to form a double girder; The splicing of board and B board;

In the hollow special-shaped column multi-story assembled steel frame-eccentric support system according to the present invention, as shown in Figure 16, the B board and the C board are horizontally aligned with the B board and the C board, and the double grooves of the B board are aligned One end of the steel truss main girder 17 with the connection plate II21 and the three-way column base node 23 of the C plate are connected by bolts through the beam end sealing plate; the single channel steel truss secondary beam 19 of the B plate is connected One end of plate II21 and the four-way column base node 24 of plate C are connected by bolts through the beam end sealing plate; the upper and lower ends of the two single channel steel truss long main girders 18 of plate B are connected through beam end sealing The plate is connected to the channel steel connecting plates in two opposite directions of the four-way column base node 24 by bolts, and the other end of the long main girder 18 of the single channel steel truss of plate B is passed through the beam end sealing plate and the three-way column of plate C respectively. The channel steel connecting plate perpendicular to the exposed channel steel on the seat node 23 is connected by bolts through the beam end sealing plate; the single channel steel truss long main beam 18 on the B plate and the single channel steel truss long main beam 18 nodes on the C plate The single beams are spliced at intervals of a fixed distance by bolts at the plate, so that two single beams are connected to form double beams; then bolts are used to cover the upper and lower sides of the splicing joints; thus completing the splicing of the B-plate and the C-plate.

To sum up, the overall floor formed by the splicing of A, B, and C plates has four different node forms at the splicing point: node 9, node 10, node 11, and node 12, of which node 9 and node 10 are located above and below the splicing node Overlay plates to increase joint stiffness.

In the above-mentioned hollow special-shaped column multi-story fabricated steel frame-eccentric support system, as shown in Figure 17-24, the exploded detailed diagrams of the assembled truss plate nodes 1-8 are respectively made; as shown in Figure 25-28 , the exploded detailed diagrams of the assembled truss plate nodes 9-12 are made respectively; the accompanying drawings 29-31 are the exploded detailed diagrams of the connection forms of three different assembled flange columns and their corresponding nodes.

In the industrial multi-high-rise assembled steel structure frame-eccentric support system according to the present invention, as shown in accompanying drawing 32, its gantry type anti-lateral force member I is made up of diagonal brace 27, cantilever rod I28 and cantilever rod II29; The rod I28 is connected to the bottom of the column by welding, the diagonal brace 27 and the cantilever rod I28 are connected by bolts through the cover plate; the cantilever rod II29 is connected to the truss beam 25 by welding and bolts, and the diagonal brace 27 and the cantilever rod II29 are connected by bolts through the cover plate The cross-section of the diagonal brace is H-shaped steel, or I-shaped steel, double-channel steel composite cross-section, double-angle steel composite cross-section; the diagonal brace is an ordinary high-strength steel strip, or it is supported by an anti-buckling energy-dissipating support or an energy-dissipating damper ; This embodiment is described by taking ordinary high-strength H-shaped steel strips as an example.

In the industrialized multi-high-rise assembled steel structure frame-eccentric support system according to the present invention, as shown in Figure 33, its gantry-type lateral force-resistant member II is composed of diagonal braces 27 and cantilever rods II29; the cantilever rods II29 are welded and bolts are connected to the truss beam 25, and the diagonal brace 27 and the cantilever rod II29 are connected by bolts through the cover plate; the cross section of the diagonal brace is H-shaped steel, or I-shaped steel, double channel steel composite cross section, and double angle steel composite cross section; The diagonal braces are ordinary high-strength steel strips, or are supported by anti-buckling energy-dissipating supports or energy-dissipating dampers; this embodiment is described by taking ordinary high-strength H-shaped steel strips as an example.

In the industrial multi-high-rise assembled steel frame-eccentric support system of the present invention, as shown in accompanying drawing 34, its herringbone anti-lateral force member is made up of diagonal brace 27, cantilever rod II29 and cantilever rod III30; cantilever rod II30 Connected to the truss beam 25 by welding and bolts, the diagonal brace 27 and the cantilever rod II29 are connected by bolts through the cover plate; The cover plate is connected by bolts; the cross-section of the diagonal brace is H-shaped steel, or I-shaped steel, double-channel steel composite cross-section, double-angle steel composite cross-section; Energy-dissipating damper support; this embodiment is described by taking an ordinary high-strength H-shaped steel strip as an example.

In the industrialized multi-high-rise assembled steel structure frame-eccentric support system according to the present invention, as shown in accompanying drawing 35, its V-shaped lateral force-resisting member is made up of diagonal brace 27, cantilever rod II29 and cantilever rod III30; cantilever rod II29 Connected to the truss beam 25 by welding and bolts, the diagonal brace 27 and the cantilever rod II29 are connected by bolts through the cover plate; The cover plate is connected by bolts; the cross-section of the diagonal brace is H-shaped steel, or I-shaped steel, double-channel steel composite cross-section, double-angle steel composite cross-section; Energy-dissipating damper support; this embodiment is described by taking an ordinary high-strength H-shaped steel strip as an example.

In the industrialized multi-high-rise assembled steel structure frame-eccentric support system according to the present invention, as shown in accompanying drawing 36, its single diagonal bar type anti-lateral force member is made up of diagonal brace 27 and cantilever bar II29; cantilever bar II29 is welded and bolts are connected to the truss beam 25, and the diagonal brace 27 and the cantilever rod II29 are connected by bolts through the cover plate; the cross section of the diagonal brace is H-shaped steel, or I-shaped steel, double channel steel composite cross section, and double angle steel composite cross section; The diagonal braces are ordinary high-strength steel strips, or are supported by anti-buckling energy-dissipating supports or energy-dissipating dampers; this embodiment is described by taking ordinary high-strength H-shaped steel strips as an example.

In the above-mentioned industrialized multi-story fabricated steel structure frame-eccentric support system, as shown in Figure 37-40, the detailed exploded diagrams of the connection nodes between the diagonal brace 27 and the frame are respectively made.

Claims (7)

1. A multi-story assembled steel frame-eccentric support system with hollow special-shaped columns, including assembled truss plates and assembled flange columns, is characterized in that: The prefabricated truss plate includes lattice truss beams equipped with angle steel webs, column base nodes and floor slabs, and the lattice truss beams are connected to other lattice truss beams or column base nodes through beam end sealing plates , form the bottom frame of the truss slab, and then support the floor in the bottom frame of the truss slab and connect them to form a prefabricated truss slab; the prefabricated truss slab is prefabricated in the factory, and the truss slab is sealed at the construction site The slabs or column base nodes are spliced with each other as the beam-slab layer of the frame structure; the beam-slab layer of the frame structure is connected up and down through the assembled flange column to form a multi-layer steel frame structure, and the assembled flange column is located in the assembled on the column base node on the truss plate; the fabricated truss plate and the fabricated flange column are all prefabricated in the factory and assembled by bolts at the construction site. 2. A multi-story fabricated steel frame-eccentric support system with hollow special-shaped columns according to claim 1, characterized in that: said fabricated truss plates include three specifications, namely A plate, B plate and C plate plate; Described A plate comprises column base node (15), three-way column base node (23), double channel steel truss long main beam (16), double channel steel truss main beam (17), single channel steel truss long main beam ( 18), single channel steel truss secondary beam (19), connection plate I (20), connection plate II (21) and floor slab (22), characterized in that: double channel steel truss main beam (17) and double channel steel truss The long main girders (16) are perpendicular to each other, and are connected with the channel steel connecting plate on the two-way column base node (15) by bolts through the beam end sealing plate, and a connecting plate II (21 ), the two ends of the connecting plate II (21) are respectively connected on the upper and lower chords of the double-channel steel truss main beam (17) and the double-channel steel truss long main beam (16); the double-channel steel truss main beam (17) The other end is connected with a single-channel steel truss long main beam (18) horizontal to the double-channel steel truss long main beam (16), and the end of the double-channel steel truss main beam (17) is connected to the single-channel steel truss long main beam ( 18) The upper and lower chords at the ends and the beam end sealing plates are respectively welded and connected, and the double-channel steel truss main girder (17) and the single-channel steel truss long main girder (18) pass through the connecting plates I (20 ), and the upper and lower chords of the double-channel steel truss main girder (17) and the single-channel steel truss long main beam (18) are welded and connected with two connecting plates I (20); the single-channel steel truss secondary beam (19) Connected to the other end of the double-channel steel truss long main beam (16) and the single-channel steel truss long main beam (18), horizontally opposite to the double-channel steel truss main beam (17), the single-channel steel truss secondary beam ( 19) One end is welded to the upper and lower chords of the long main girder of the single-channel steel truss (18) and the beam end sealing plate respectively, and the secondary beam of the single-channel steel truss (19) is connected to the long main girder of the single-channel steel truss (18) are connected by two connecting plates I (20) connected at the upper and lower chord places; Connect by two connecting plates II (21) connected at the upper and lower chord places; the long main girder of the double-channel steel truss (16), the long main girder of the double-channel steel truss (17), the long main girder of the single-channel steel truss ( 18), the single channel steel truss secondary beam (19) forms a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single channel steel truss secondary beams (19) in the two rectangular frames are aligned and Connect by bolts, and two double-channel steel truss long main girders (16) are located on a straight line, and two single-channel steel truss long main girders (18) are located on a straight line; two double-channel steel truss long main girders ( The upper and lower ends of 16) are connected by bolts to the channel steel connecting plates in two opposite directions of the two-way column base node (15) and the three-way column base node (23) respectively through the beam end sealing plate. The steel truss secondary beam (19) is connected to the channel steel connecting plate perpendicular to the two directions on the three-way column base node (23); the bottom frame is connected to the two floor slabs ( 22) connected; all components of the A board are prefabricated and assembled in the factory; Described B plate comprises double channel steel truss main beam (17), single channel steel truss long main beam (18), single channel steel truss secondary beam (19), connection plate I (20), connection plate II (21) and The floor (22), the double-channel steel truss main beam (17) and the single-channel steel truss long main beam (18) are perpendicular to each other, and the ends of the double-channel steel truss main beam (17) and the single-channel steel truss long main beam (18) The upper and lower chords at the ends and the beam end sealing plates are respectively welded and connected, and then connected through the connecting plates I (20) of the upper and lower sections, and the double-channel steel truss main beam (17) is connected with the single-channel steel truss long main beam ( The upper and lower chords of 18) are all connected by welding with two connecting plates I (20); Another long single-channel steel truss main beam (18) horizontal to the steel truss long main beam (18), and the upper and lower chords of the double-channel steel truss main beam (17) and the single-channel steel truss long main beam (18) are both Be connected with two connecting plates II (21) by welding; the single channel steel truss secondary beam (19) is connected at the other end of the two single channel steel truss long main beams (18), and the double channel steel truss main beam ( 17) Horizontally relative, the connection form of the single-channel steel truss secondary beam (19) and the two single-channel steel truss long main beams (18) and the double-channel steel truss main beam (17) and the two single-channel steel trusses The connection forms of the long main beams (18) are the same; the double-channel steel truss main beams (17), two single-channel steel truss long main beams (18), and the single-channel steel truss secondary beams (19) form a rectangular frame ; The two rectangular frames are connected to form a spliced bottom frame; the single-channel steel truss secondary beams (19) in the two rectangular frames are aligned and connected by bolts, and two single-channels of a rectangular frame are horizontally opposite The steel truss long main girder (18) and two single-channel steel truss long main girders (18) horizontally opposite to another long direction frame are respectively located on a straight line; The floor plates (22) are connected; all components of the B plate are prefabricated and assembled in the factory; The C plate includes a three-way column base node (23), a four-way column base node (24), a double-channel steel truss main beam (17), a single-channel steel truss long main beam (18), a single-channel steel truss secondary beam (19), connecting plate I (20), connecting plate II (21) and floor (22), double channel steel truss main girder (17) and single channel steel truss long main girder (18) are perpendicular to each other, and all pass through the beam The end sealing plate is connected with two adjacent channel steel connecting plates on the three-way column base node (23) by bolts, and a connecting plate II (21) is respectively welded on the upper and lower end faces of the joint, and the connecting plate II (21 ) are respectively connected on the upper and lower chords of the double-channel steel truss main beam (17) and the single-channel steel truss long main beam (18); the other end of the double-channel steel truss main beam (17) is connected with Another single channel steel truss long main beam (18) horizontal to the single channel steel truss long main beam (18), the double channel steel truss main beam (17) ends and this single channel steel truss long main beam (18) The upper and lower chords at the ends and the beam end sealing plates are respectively welded and connected, and the double-channel steel truss main beam (17) is connected to the single-channel steel truss long main beam (18) through connecting plates I (20) of the upper and lower sections , and the upper and lower chords of the double-channel steel truss main girder (17) and the single-channel steel truss long main girder (18) are welded and connected with two connecting plates I (20); the single-channel steel truss secondary beam (19) is connected in The other end of the two long main girders of single channel steel trusses (18) is horizontally opposite to the main beams of double channel steel trusses (17), and one end of the secondary beams of single channel steel trusses (19) is connected to the length of single channel steel trusses. The upper and lower chords at the other end of the main girder (18) and the girder end sealing plate are respectively welded and connected, and the single channel steel truss secondary girder (19) and the single channel steel truss long main girder (18) are connected through the upper and lower chord The two connecting plates I (20) at the bars are connected; the other end of the single-channel steel truss beam (19) and the long main beam (18) of the single-channel steel truss are connected by two connections at the upper and lower chords. Plate II (21) is connected; described double channel steel truss girder (17), two single channel steel truss long main girders (18), single channel steel truss secondary beam (19) constitute a rectangular frame; described Two rectangular frames are connected to form a spliced bottom frame; the single-channel steel truss secondary beams (19) in the two rectangular frames are aligned and connected by bolts, and the two single-channel steel truss long primary The beam (18) and the two long main girders (18) of the single-channel steel truss horizontally opposite to the other longitudinal frame are respectively located on a straight line; the upper and lower ends of the two long main beams (18) of the single-channel steel truss pass through the beam end The sealing plate is connected with the channel steel connecting plates in two opposite directions of the three-way column base node (23) and the four-way column base node (24) by bolts, and the two single channel steel truss secondary beams (19) are connected in The channel steel connecting plate perpendicular to the two directions on the four-way column base node (24); the bottom frame is connected to the two floor slabs (22) through the upper anchor of the upper chord of the truss beam; the C plate All components are prefabricated and assembled in the factory; In the hollow special-shaped column multi-story assembled steel frame-eccentric support system, the A plate and the B plate are horizontally aligned with the A plate and the B plate, and the double-channel steel truss main girder (17) of the A plate has no connecting column One end of the seat and the double channel steel truss main beam (17) of the B plate have an end of the connecting plate I (20) to be spliced with bolts through the beam end sealing plate; the single channel steel truss secondary beam (19) of the A plate without One end of the single-channel steel truss truss secondary beam (19) connecting one end of the column base and the B plate has one end of the connecting plate I (20) to splice the beam end sealing plate by bolts; the single-channel steel truss long main beam ( 18) and the joint plate of the single channel steel truss long main beam (18) of the B plate, the single beams are spliced at intervals of a fixed distance by bolts, so that the two single beams are connected to form a double beam; then bolts are used on the upper and lower sides of the joint joint Add the cover board; thus complete the splicing of A board and B board; In the hollow special-shaped column multi-story assembled steel frame-eccentric support system, the B plate and the C plate are horizontally aligned with the B plate and the C plate, and the connecting plates of the double-channel steel truss main girder (17) of the B plate One end of II (21) and the exposed channel steel connection plate of the three-way column base node (23) of plate C are connected by bolts through the beam end sealing plate; One end of (21) and the four-way column base node (24) of plate C are connected by bolts through the beam end sealing plate; the upper and lower ends of the two long main beams (18) They are all connected by bolts to the channel steel connecting plates in two opposite directions of the four-way column base node (24) through the beam end sealing plate, and the other end of the long main beam (18) of the single channel steel truss of the B plate is respectively passed through the beam end The channel steel connecting plate perpendicular to the exposed channel steel on the three-way column base node (23) of the sealing plate and the C plate is connected by bolts through the beam end sealing plate; the single channel steel truss long main beam (18) of the B plate The single channel steel truss long main girder (18) joint plate of the C plate is spliced with bolts at intervals of a fixed distance, so that two single girders are connected to form a double girder; board; thereby completing the splicing of board B and board C. 3. A hollow special-shaped column multi-storey assembled steel frame-eccentric support system according to claim 1, characterized in that: the assembled truss plate is respectively connected with the assembled flange column through bolts at the node of the column base. connected to form a frame structure; the eccentric support member is made up of a diagonal brace (27) and a cantilever bar, and the cantilever bar is connected to the column bottom of the steel frame structure by welding or connected to the steel frame structure truss beam ( 25) At the upper and lower chords, the diagonal braces (27) and the cantilever rods at the upper and lower ends of each floor are connected by bolts at the construction site through cover plates, forming energy-dissipating beam sections on the beams to form a frame‐eccentric support structure; The cross-section of the brace is H-shaped steel, or I-shaped steel, double-channel steel composite cross-section, double-angle steel composite cross-section; the diagonal brace is an ordinary high-strength steel strip, or it is supported by buckling-resistant energy-dissipating supports or energy-dissipating dampers. 4. In the hollow special-shaped column multi-story assembled steel frame-eccentric support system according to claim 1, it is characterized in that: the beams involved in the hollow special-shaped column multi-story assembled steel frame-eccentric support system are composed of upper and lower chords (5), the truss beam formed by splicing the web member (2) and the gusset plate (3), wherein the upper and lower chords use channel steel, or use channel steel, or use square steel pipes, the web member (2) uses angle steel, and the web member and The chords form an angle of 30°-60°; and are divided into single beams and double beams. The single beams are provided with connection holes at a fixed distance, which is convenient for splicing two single beams into double beams with bolts when splicing plates. Double girders, web members (2), upper and lower chords (5) and gusset plates (3) are connected by bolts or welded, all processed in the factory; Or use a truss beam composed of angle steel and fill plate splicing, including upper and lower chords (1), webs (2) and fill plates (4), where the upper and lower chords (1) and webs (2) are made of angle steel, The web and the chord form an angle of 30°-60°; it is divided into single beam and double beam, and the single beam is provided with connection holes at a fixed distance, which is convenient for splicing two single beams into a double beam with bolts when splicing plates. Beams, for double beams, angles and filler plates are bolted or welded, all done at the factory. 5. In the hollow special-shaped column multi-storey assembled steel frame-eccentric support system according to claim 1, it is characterized in that: its column base has three forms, namely two-way column base, three-way column base and four-way column Seat; flange plate I7 is welded at the upper and lower places of the hollow L-shaped column (11), and then two pieces of channel steel (9) are welded to the adjacent two sides of the hollow L-shaped column (11) to form a two-way column seat; The blue plate I7 is welded on the upper and lower parts of the hollow T-shaped column (10), and then three pieces of channel steel (9) are welded to the three sides of the hollow T-shaped column (11) to form a three-way column seat; the flange plate I7 is welded on the hollow cross The upper and lower parts of the column (8) are welded, and then four pieces of channel steel (9) are welded to the four sides of the hollow cross column (8) to form a four-way column seat; wherein the channel steel (9) has a bolt hole on the web plate, and The upper end sealing plate of the beam is spliced with bolts. 6. In the hollow special-shaped column multi-story assembled steel frame-eccentric support system according to claim 1, it is characterized in that: the assembled flange column consists of a hollow L-shaped column (11), a hollow T-shaped column (10), The hollow cross-shaped column (8) is composed of flange plate II (14), flange plate III (13), and flange plate IV (12). Extending the ordinary flange plate in two directions is the flange plate II (14), extending in three directions is the flange plate III (13), extending in four directions is the flange plate IV (12); according to the shape of the flange plate, it can be divided into 3 forms The flange columns are respectively double-sided flange columns, three-side flange columns and four-side flange columns; the flange plate II (14) is welded on the upper and lower parts of the hollow L-shaped column (11) to form a double-sided flange column; Flange plate III (13) is welded above and below the hollow T-shaped column (10) to form a three-sided flange column; flange plate IV (12) is welded above and below the hollow cross-shaped column (8) to form a four-sided Flange column; the three kinds of assembled flange columns are all manufactured in the factory. 7. The hollow special-shaped column multi-story prefabricated steel frame-eccentric support system according to claim 1, characterized in that: the floor is made of profiled steel composite floor, or reinforced concrete floor, or OSB particle board.