CN103114648A - Multi-high-layer assembly type steel structure frame-center supporting system - Google Patents

Abstract

The invention provides a multi-high-layer assembly type steel structure frame-center supporting system, and belongs to the technical field of structural engineering. The system comprises assembly type beam-slabs, assembly type upright columns and profile steel inclined supports. Each assembly type beam-slab comprises a floor, a column joint and a hollow steel beam of a matched profile steel web member. The hollow steel beams are connected with the column joints, the floors are supported on the hollow steel beams, and each assembly type upright column is composed of a box-shaped column and a flange plate. During construction, the assembly beam-slabs and the assembly type upright columns are connected to form a frame structure, the profile steel inclined supports are arranged on the basis of the steel frame, and lateral stiffness of the structure is improved. All elements of the system are precast in factories and are rapidly assembled to form the structural system through bolts on construction sites. Concrete pouring and welding work are not needed, the defects that a traditional building is long in construction period, severe in material waste, severe in pollution during the construction process and the like are reduced, and factory integral production of the building can be achieved.

Description

A multi-high-rise assembled steel frame-central support system

technical field

The invention relates to a multi-high-rise assembled steel structure frame-central support system, which belongs to the technical field of structural engineering. the

Background technique

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. Structural development has lagged behind. At present, in developed countries, such as the United States and European countries, the steel structure construction area accounts for more than 50% of the total construction area, and Japan accounts for 80%, while our country accounts for less than 4%. the

Moreover, traditional buildings have disadvantages such as long construction period, serious waste of materials, and heavy pollution during construction, which cannot meet the needs of rapid reconstruction after the earthquake. Therefore, after learning the tragic lessons of the Wenchuan earthquake, it is imperative to innovate the industrialized assembly high-rise steel structure system. Relevant research not only conforms to the national development strategy of promoting the use of steel structures and promoting housing industrialization, but also meets the needs of energy conservation and emission reduction, and has broad development prospects and application value. the

In the traditional steel frame structure system, the lateral stiffness of the structure is small, and the displacement between floors is large under the action of wind and earthquake loads, which is difficult to meet the comfort requirements. The new multi-story steel structure frame-central support system adds horizontal and vertical steel supports on the basis of the steel frame, which improves the lateral stiffness of the structure and improves the deformation performance of the structure. the

Contents of the invention

The invention proposes a novel multi-high-rise assembled steel structure frame-central support system belonging to the technical field of structural engineering. Its purpose is to realize the design standardization, industrialization of production and mechanization of installation of multi-high-rise steel structure system, and promote the development of prefabricated steel structure buildings. And it solves the shortcomings of traditional buildings such as long construction period, serious waste of materials, and heavy pollution in the construction process, significantly reducing the construction period and project cost. Diagonal braces are introduced as lateral force-resistant components to increase the lateral stiffness of the structure and improve the deformation performance of the structure under high-intensity earthquakes and strong wind loads. the

The multi-high-rise assembled steel structure frame-central support system of the present invention includes assembled beams, assembled columns and section steel oblique supports, and is characterized in that:

The prefabricated beam slab includes a hollow steel beam with a matching steel web, a column base node and a floor slab, and the hollow steel beam is connected with other hollow steel beams or column base nodes through a beam end sealing plate to form a beam slab The bottom frame, and then the floor slab is supported on the bottom frame of the beam slab and connected to form a prefabricated beam slab; the prefabricated beam slab is prefabricated in the factory and spliced at the construction site through its beam end sealing plate or column base node , 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 column to form a multi-layer steel frame structure, and the assembled column is located on the column base node of the assembled beam-slab; On the basis of the steel frame structure, the steel beams or column bottoms in the beam-slab layer of the frame structure are connected to the steel beams or the bottom of the column as lateral force-resisting members; Prefabricated in the factory, assembled by bolts at the construction site;

A multi-high-rise assembled steel structure frame-central support system according to the present invention is characterized in that: the assembled beam slab includes three specifications, namely A plate, B plate and C plate;

The A plate includes a column base node 10, a double angle steel transverse main beam 11, a double angle steel longitudinal main beam 12, a single angle steel transverse main beam 13, a single angle steel longitudinal secondary beam 14, a connecting plate I15, a connecting plate II16 and a floor slab 17; The angle steel longitudinal main girder 12 and the double angle steel transverse main girder 11 are perpendicular to each other, and are connected to the channel steel connecting plate on the two-way column base joint 10 by bolts through the beam end sealing plate, and the upper and lower end faces of the joint are respectively welded with a joint Plate II16, the two ends of the connecting plate II16 are respectively connected to the upper and lower chords of the double-angle steel longitudinal girder 12 and the double-angle steel transverse girder 11 and the upper and lower flange plates of the two-way column seat node 10; the other of the double-angle steel longitudinal girder 12 One end is connected to the single-angle steel transverse main beam 13 parallel to the double-angle steel transverse main beam 11, and the double-angle steel longitudinal main beam 12 is connected to the single-angle steel transverse main beam 13 through the connecting plate I15 of the upper and lower sections, and the double-angle steel longitudinal main beam 12 is connected to the The upper and lower chords of the single-angle steel transverse main girder 13 are connected by welding with two connecting plates I15; The angle steel longitudinal main girder 12 is parallel to each other, and the single angle steel longitudinal secondary girder 14 and the single angle steel transverse main girder 13 are connected by two connection plates I15 connected at the upper and lower chord places; the double angle steel transverse main girder 11, the double angle steel The longitudinal main girder 12, the single-angle steel transverse main girder 13, and the single-angle steel longitudinal secondary beam 14 form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single-angle steel longitudinal secondary beam in the two rectangular frames 14 are aligned and connected by bolts, and two double-angle steel transverse main beams 11 are located on a straight line, and two single-angle steel transverse main beams 13 are located on a straight line; The upper and lower ends of the double-angle steel transverse main beam 11 are connected by bolts to the channel steel connecting plates on the two opposite directions of the three-way column base node 10 through the beam end sealing plate, and the two single-angle steel longitudinal The beam 14 is connected to the channel steel connecting plate perpendicular to the two directions on the three-way column base node 10; all components of the A plate are prefabricated and assembled in the factory;

The B plate includes a double-angle steel longitudinal main beam 12, a single-angle steel transverse main beam 13, a single-angle steel longitudinal secondary beam 14, a connecting plate I15, a connecting plate II16 and a floor slab 17; a double-angle steel longitudinal main beam 12 and a single-angle steel transverse main beam 13 perpendicular to each other, the ends of the double-angle longitudinal main girder 12 and the upper and lower chords of the single-angle transverse main girder 13 are welded and connected respectively, and then connected through the connecting plate I15 of the upper and lower sections, and the double-angle longitudinal The upper and lower chords of the main beam 12 and the single-angle steel transverse main beam 13 are connected by welding with two connecting plates I15; the other end of the double-angle steel longitudinal main beam 12 is connected with another single-angle steel transverse main beam 13 horizontal The main beam 13, the double-angle steel longitudinal main beam 12 and the single-angle steel transverse main beam 13 are connected through the connection plate II16 of the upper and lower sections, and the upper and lower chords of the double-angle steel longitudinal main beam 12 and the single-angle steel transverse main beam 13 are connected with each other. The two connecting plates II16 are connected by welding; the single-angle steel longitudinal beam 14 is connected to the other end of the two double-single-angle steel transverse main beams 13, and is horizontally opposite to the double-angle steel longitudinal main beam 12, and the single-angle steel longitudinal beam 14 is connected to the two The connection form of root single angle steel transverse main beam 13 is identical with the connection form of described double angle steel longitudinal main beam 12 and two single angle steel transverse main beams 13; Described double angle steel longitudinal main beam 12, two single angle steel transverse main beams The beam 13 and the single angle steel longitudinal secondary beam 14 form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single angle steel longitudinal secondary beams 14 in the two rectangular frames are aligned and connected by bolts, and Two horizontally opposite single-angle steel transverse main beams 13 of a rectangular frame and two horizontally opposite single-angle steel transverse main beams 13 of another long direction frame are respectively located on a straight line; Be connected with two floor slabs 17; All components of described B slab are all prefabricated and assembled in factory;

The C plate includes column base node 10, double angle steel longitudinal main beam 12, single angle steel transverse main beam 13, single angle steel longitudinal secondary beam 14, connection plate I15, connection plate II16 and floor slab 17; double angle steel longitudinal main beam 12 and single angle steel longitudinal beam 14 Angle steel transverse main girders 13 are perpendicular to each other, and all pass through beam end sealing plates, and are connected with two adjacent channel steel connecting plates on the three-way column base joint 10 by bolts, and a connecting plate is welded at the upper and lower end faces of the joint II16, the two ends of connecting plate II16 are respectively connected on the upper and lower chords of double-angle steel longitudinal girder 12 and single-angle steel transverse girder 13; the other end of double-angle steel longitudinal girder 12 is connected with single-angle steel transverse girder 13 Another single-angle steel transverse main girder 13, the end of the double-angle steel longitudinal main beam 12 is welded to the upper and lower chords and beam end sealing plates at the end of the single-angle steel transverse main beam 13 respectively, and the double-angle steel longitudinal main girder 12 is connected to the The single-angle steel transverse main girder 13 is connected by connecting plates I15 of the upper and lower sections, and the upper and lower chords of the double-angle steel longitudinal main girder 12 and the single-angle steel transverse main beam 13 are connected by welding with two connecting plates I15; The beam 14 is connected to the other end of the two single-angle steel transverse main beams 13, and is horizontally opposite to the double-angle steel longitudinal main beam 12. The chord and the beam end sealing plate are respectively connected by welding, and the single-angle steel longitudinal secondary beam 14 and the single-angle steel transverse main beam 13 are connected through two connecting plates I15 connected at the upper and lower chords; the single-angle steel longitudinal secondary beam 14 is connected separately One end and the single-angle steel transverse main beam 13 are connected by two connecting plates II16 connected at the upper and lower chord places; the double-angle steel longitudinal main beam 12, two single-angle steel transverse main beams 13, single-angle steel longitudinal secondary Beams 14 form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single-angle steel longitudinal secondary beams 14 in the two rectangular frames are aligned and connected by bolts, and two horizontally opposite rectangular frames A single-angle steel transverse main beam 13 and two single-angle steel transverse main beams 13 horizontally opposite to another long-direction frame are respectively located on a straight line; the upper and lower ends of the two single-angle steel transverse main beams 13 are connected by beam end sealing plates The channel steel connecting plates in two opposite directions of the column base node 10 are connected by bolts, and the two single-angle steel longitudinal beams 14 are connected to the channel steel connecting plates perpendicular to the two directions on the three-way column base node 10 The bottom frame is connected to the two floor slabs 17 through the upper studs of the upper chord of the angle steel beam; all the components of the C plate are prefabricated and assembled in the factory;

In the high-rise prefabricated steel structure frame-central support system, the A plate and the B plate are horizontally aligned with the A plate and the B plate, and the double-angle steel longitudinal girder 12 of the A plate has one end of the connecting plate I15 and the end of the B plate One end of the double-angle steel longitudinal main beam 12 with the connection plate I15 is spliced with bolts through the beam end sealing plate; the two single-angle steel longitudinal beams 14 of the A plate have one end of the connection plate I15 and the two single-angle steel longitudinal secondary beams of the B plate One end of the beam 14 with the connecting plate I15 is spliced with the beam end sealing plate by bolts; the two single-angle steel transverse main beams 13 of the A plate and the two single-angle steel transverse main beams 13 of the B plate are aligned and connected by bolts; then Use bolts to cover the upper and lower sides of the splicing node; thus completing the splicing of A and B plates;

In the high-rise prefabricated steel frame-central support system, the B-plate and the C-plate are horizontally aligned, and the end of the double-angle steel longitudinal girder 12 of the B-plate with the connecting plate II16 is aligned with the C-plate The 10-channel steel connecting plate of the three-way column base node is connected by bolts through the beam end sealing plate; the end of the single-angle steel longitudinal beam 14 of the B plate with the connection plate II16 is connected to the four-way column base node 10 channel steel of the C plate The plates are connected by bolts through the beam end sealing plate; the upper and lower ends of the two single-angle steel transverse main beams 13 of the B plate are both passed through the beam end sealing plate and the channel steel connecting plates in two opposite directions of the four-way column base node 10 are bolted Connect the other end of the single-angle steel transverse main beam 13 of the B plate through the beam end sealing plate and the channel steel connecting plate perpendicular to the channel steel connecting plate on the three-way column base node 10 of the C plate through the beam end The sealing plates are connected by bolts; at the joint plate of the single-angle steel transverse main beam 13 of the B plate and the single-angle steel transverse main beam 13 of the C plate, the single beams are spliced at intervals of a fixed distance by bolts, so that the two single beams are connected into a double Beams; then cover the plates with bolts on the upper and lower sides of the splicing joints; thus completing the splicing of the B plate and the C plate;

In the high-rise prefabricated steel structure frame-central support system, the C plate and the A plate are aligned horizontally, and the double angle steel longitudinal girder 12 of the C plate has one end of the connecting plate I15 and the end of the A plate One end of the double-angle steel longitudinal main beam 12 with the connection plate I15 is spliced with bolts through the beam end sealing plate; the two single-angle steel longitudinal beams 14 of the C plate have one end of the connection plate I15 and the two single-angle steel longitudinal secondary beams of the A plate One end of the beam 14 with the connecting plate I15 is spliced with the beam end sealing plate by bolts; the two single-angle steel transverse main beams 13 of the C plate and the two single-angle steel transverse main beams 13 of the A plate are aligned and connected by bolts; then Use bolts to cover the upper and lower sides of the splicing node; thus completing the splicing of C and A plates;

The high-rise assembled steel structure frame-central support system according to the present invention is characterized in that: the assembled beam plate is respectively connected with the assembled column through bolts at the node of the column base to form a frame structure; the section steel support The components are composed of shaped steel diagonal rods 18 and cantilever ends. The cantilever ends are connected to the bottom of the columns of the steel frame structure by welding at the factory or connected to the upper and lower chords of the steel beams of the steel frame structure by welding and bolts. The diagonal braces 18 and the upper end of each floor The cantilever end at the lower end is connected with bolts through the cover plate at the construction site; the central support can be herringbone, V-shaped, cross-shaped or single-slope; the cross-section of the diagonal brace is H-shaped steel, or I-shaped steel, Double-channel steel composite section, double-angle steel composite section; the diagonal brace is an ordinary high-strength steel strip, or is supported by buckling-resistant energy-dissipating supports or energy-dissipating dampers;

The multi-high-rise assembled steel structure frame-central support system of the present invention is characterized in that: the beams used in the assembled beam slab are hollow steel beams equipped with shaped steel web bars;

Vierendeel angle beams with channel steel webs can be used, including angle steel upper and lower chords 1, channel steel webs 2, channel steel webs are perpendicular to the chords, and the upper and lower ends of the webs and the angle steel legs of the upper and lower chords All angle steel beams are provided with connection holes at regular intervals on the upper and lower chords and channel steel webs, and two single angle steel beams can be used to form double angle steel beams with bolts when assembling the prefabricated beam and slab. the

Or use an open-endeel angle steel beam with T-shaped steel webs, including angle steel upper and lower chords 1, T-shaped steel webs 3, the T-shaped steel webs are perpendicular to the chords, and the upper and lower ends of the T-shaped steel webs and the angle steel of the upper and lower chords Welding at the base of the limbs; all angle steel beams are provided with connecting holes at regular intervals on the upper and lower chords and T-shaped steel webs, and two single-angle steel beams can be used to form double-angle steel beams when assembling the prefabricated beam and slab beam. the

For the hollow steel beam configured with shaped steel webs, angle steel, channel steel or box steel can be used for the upper and lower chords, channel steel or T-shaped steel can be used for the webs, and the webs are all perpendicular to the chords, and the webs The upper and lower ends are welded to the upper and lower chords, and connection holes are set on the chords and webs;

In the multi-high-rise assembled steel structure frame-central support system of the present invention, it is characterized in that: the column seat nodes are welded by box-shaped columns, channel steel connecting plates and flange plates, according to the welded channel steel connecting plates The different numbers are two-way column bases, three-way column bases and four-way column bases; two flange plates I4 are welded on the upper and lower ends of the box-shaped column 5, and then two pieces of channel steel connecting plates 6 are welded adjacent to the box-shaped column 5 Both sides thus form a two-way column seat for connection with the corner column of the flange plate; two flange plates I4 are welded at the upper and lower ends of the box-shaped column 5, and then three pieces of channel steel connecting plates 6 are welded to the box-shaped column 5 three The side thus forms a three-way column base for connection with the side column of the flange plate; two flange plates I4 are welded at the upper and lower ends of the box column 5, and then four pieces of channel steel connecting plates 6 are welded to the four sides of the box column 5 Thereby forming a four-way column seat, which is used for connection with the column in the flange plate; wherein the channel steel connecting plate 6 has bolt holes on the web, which is convenient to be connected with the beam end sealing plate of the angle steel beam to form the assembled type. Beam slab. the

In the multi-story assembled steel structure frame-central support system of the present invention, it is characterized in that: the assembled column is welded by box-shaped column 5 and flange plate II7 or flange plate III8 or flange plate IV9, according to The shape of the flange plate can be divided into flange plate corner column, flange plate side column and flange plate center column; flange plate III8 is welded on the top and bottom of the box column 5 to form a flange plate corner column; the flange plate Plate II7 is welded at the top and bottom of the box-shaped column 5 to form the side column of the flange plate; the flange plate IV9 is welded at the top and bottom of the box-shaped column 5 to form the middle column of the flange plate; Prefabricated in the factory, bolts are used on the construction site to connect the flange plate of the column with the flange plate of the column seat node in the assembled beam slab to realize the assembly of the column and the beam slab, thereby forming a steel frame structure. the

In the multi-high-rise assembled steel structure frame-central support system described in the present invention, the floor 17 can use a profiled steel plate concrete composite floor, a prefabricated integral concrete floor, a laminated composite floor, a densely ribbed OSB board, a light steel floor, Reinforced truss laminated panels, fiber cement pressure panels;

The beneficial effects of the present invention are that in the above-mentioned novel multi-high-rise assembled steel structure frame-central support system, the beams used are all hollow prefabricated steel beams composed of angle steel and channel steel or T-shaped steel welded. The large gap is convenient for pipelines to pass through, effectively increasing the clear height of the room. the

The novel multi-story assembled steel structure frame-central support system of the present invention 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. And the anti-lateral force system can effectively improve the lateral stiffness of the structure, improve the deformation performance of the structure, and make the structure have a greater safety reserve. 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

The novel multi-high-rise assembled steel structure frame-central support system proposed by the invention is an innovative structural system in the multi-high-rise building steel structure system. the

Description of drawings

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

Fig. 1 is the plane layout diagram after the splicing of the novel assembled beam and slab of the present invention

Fig. 2 is the schematic diagram of the hollow type single-angle steel beam equipped with channel steel web bars in the novel assembled beam slab of the present invention

Fig. 3 is a schematic diagram of the hollow type single-angle steel beam equipped with T-shaped steel web bars in the novel assembled beam slab of the present invention

Fig. 4 is a schematic diagram of the hollow type double-angle steel beam equipped with channel steel web bars in the novel assembled beam slab of the present invention

Fig. 5 is a schematic diagram of the hollow type double-angle steel beam equipped with T-shaped steel web bars in the novel assembled beam slab of the present invention

Fig. 6 is a schematic diagram of a two-way column seat in the novel assembled beam slab of the present invention

Fig. 7 is a schematic diagram of a three-way column seat in a novel assembled beam slab of the present invention

Fig. 8 is a schematic diagram of a four-way column seat in a novel assembled beam slab of the present invention

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

Figure 10 is an exploded view of the new assembled beam plate A of the present invention

Fig. 11 is the completed assembly diagram of the new assembled beam plate A of the present invention

Figure 12 is an exploded view of the novel assembled beam plate B of the present invention

Fig. 13 is the completed assembly diagram of the novel assembled beam plate B of the present invention

Figure 14 is an exploded view of the new assembled beam plate C of the present invention

Fig. 15 is the completed assembly diagram of the new assembled beam slab C plate of the present invention

Fig. 16 is the completed assembly drawing of the novel assembled beam plate A, B and C plate of the present invention

Figure 17 is an exploded view of the novel assembled beam-slab node 1 of the present invention

Figure 18 is an exploded view of the novel fabricated beam-slab node 2 of the present invention

Figure 19 is an exploded view of the novel assembled beam-slab node 3 of the present invention

Figure 20 is an exploded view of the novel assembled beam-slab node 4 of the present invention

Figure 21 is an exploded view of the novel assembled beam-slab node 5 of the present invention

Figure 22 is an exploded view of the novel assembled beam-slab node 6 of the present invention

Figure 23 is an exploded view of the novel assembled beam-slab node 7 of the present invention

Figure 24 is an exploded view of the novel assembled beam-slab node 8 of the present invention

Figure 25 is an exploded view of the novel assembled beam-slab node 9 of the present invention

Figure 26 is an exploded view of the novel assembled beam-slab node 10 of the present invention

Figure 27 is an exploded view of the novel assembled beam-slab node 11 of the present invention

Figure 28 is an exploded view of the novel assembled beam-slab node 12 of the present invention

Figure 29 is an exploded view of the connection form of the flange plate corner column and the node of the present invention

Figure 30 is an exploded view of the connection form of the flange plate side column and the node of the present invention

Figure 31 is an exploded view of the connection form between the column and the node in the flange plate of the present invention

Figure 32 is a schematic diagram of the novel multi-high-rise assembled steel structure frame-herringbone central support system of the present invention

Figure 33 is a schematic diagram of the novel multi-high-rise assembled steel structure frame-single-slope central support system of the present invention

Figure 34 is a schematic diagram of the novel multi-high-rise assembled steel structure frame-cross center support system of the present invention

Figure 35 is a schematic diagram of the novel multi-high-rise assembled steel structure frame-V-shaped central support system of the present invention

Figure 36 is a detailed diagram of the connection of node 13 of the novel multi-high-rise assembled steel structure frame-central support system of the present invention

Figure 37 is a detailed diagram of the connection of node 14 of the novel multi-high-rise assembled steel structure frame-central support system of the present invention

In the figure 1. Upper and lower chords, 2. Channel steel web, 3. T-shaped steel web, 4. Flange plate I, 5. Box column, 6. Channel steel, 7. Flange plate II, 8. Method Lan plate III, 9. Flange plate IV, 10. Column base joint, 11. Double angle steel transverse main beam, 12. Double angle steel longitudinal main beam, 13. Single angle steel transverse main beam, 14. Single angle steel longitudinal secondary beam, 15 . Connecting plate I, 16. Connecting plate II, 17. Floor slab, 18. Section steel oblique rod, 19. Cantilever end I, 20. Cantilever end II. the

Detailed ways

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

As shown in accompanying drawing 1, the splicing position of the novel assembled beam slab of the present invention is arranged in the middle of the main girder, and the shear force and bending moment at this position are relatively small. From the perspective of structural mechanics, the setting of the splicing position is very reasonable. the

As shown in accompanying drawing 2 and accompanying drawing 4, in the novel multi-story assembled steel structure frame-central support system of the present invention, the beams involved are equipped with hollow-type angle steel beams with channel steel web members, including the upper and lower chords of angle steel Rod 1, channel steel web 2, the channel steel web is perpendicular to the chord, and the upper and lower ends of the web are welded to the angle steel legs of the upper and lower chords; all angle steel beams are on the upper and lower chords and on the channel steel web Connection holes are provided at regular intervals, and two single-angle steel beams can be formed into double-angle steel beams by bolts when assembling the prefabricated beam and slab. the

As shown in attached drawing 3 and attached drawing 5, or use a vierendeel angle steel beam equipped with T-shaped steel webs, including angle steel upper and lower chords 1, T-shaped steel webs 3, the T-shaped steel webs are perpendicular to the chords, and the T-shaped steel webs The upper and lower ends of the web are welded to the root of the angle steel legs of the upper and lower chords; all angle steel beams are provided with connection holes at regular intervals on the upper and lower chords and the T-shaped steel webs, and bolts can be used when assembling the prefabricated beams and slabs Combining two single-angle steel beams into a double-angle steel beam;

For the hollow steel beam configured with shaped steel webs, angle steel, channel steel or box steel can be used for the upper and lower chords, channel steel or T-shaped steel can be used for the webs, and the webs are all perpendicular to the chords, and the webs The upper and lower ends are welded to the upper and lower chords, and connecting holes are arranged on the chords and the webs. the

In the assembled steel structure frame-central support system according to the present invention, as shown in accompanying drawings 6-8, the column seat nodes are welded by box-shaped columns, channel steel connecting plates and flange plates, according to the welded channel steel The number of connecting plates is different as two-way column base, three-way column base and four-way column base; two flange plates I4 are welded on the upper and lower ends of the box-shaped column 5, and then two pieces of channel steel connecting plates 6 are welded to the box-shaped column 5 adjacent two sides to form a two-way column seat for connection with the corner column of the flange plate; two flange plates I4 are welded at the upper and lower ends of the box-shaped column 5, and then three pieces of channel steel connecting plates 6 are welded to the box-shaped column The three sides of the column 5 form a three-way column base for connection with the side column of the flange plate; two flange plates I4 are welded at the upper and lower ends of the box-shaped column 5, and then four pieces of channel steel connecting plates 6 are welded to the box-shaped column The four sides of the column 5 form a four-way column seat for connection with the column in the flange plate; among them, there are bolt holes on the web of the channel steel connecting plate 6, which is convenient for connecting with the beam end sealing plate of the angle steel beam to form the Assembled slabs. the

In the prefabricated steel structure frame-central support system of the present invention, as shown in Figure 9, the prefabricated column is welded by box-shaped column 5 and flange plate II7 or flange plate III8 or flange plate IV9, According to the shape of the flange plate, it can be divided into flange plate corner column, flange plate side column and flange plate center column; flange plate III8 is welded on the top and bottom of box column 5 to form flange plate corner column; The blue plate II7 is welded at the top and bottom of the box-shaped column 5 to form the side column of the flange plate; the flange plate IV9 is welded at the top and bottom of the box-shaped column 5 to form the middle column of the flange plate; the three assembled columns are all It is prefabricated in the factory, and bolts are used on the construction site to connect the flange plate of the column with the flange plate of the column seat node in the assembled beam slab to realize the assembly of the column and the beam slab, thereby forming a steel frame structure. the

In the prefabricated steel structure frame-central support system, as shown in Figures 10-11, the A plate includes a column base node 10, a double-angle steel transverse main beam 11, a double-angle steel longitudinal main beam 12, and a single-angle steel transverse main beam 13. Single-angle steel longitudinal beam 14, connection plate I15, connection plate II16 and floor slab 17, characterized in that: double-angle steel longitudinal beam 12 and double-angle steel transverse The channel steel connecting plates on the column base node 10 are connected by bolts, and a connecting plate II16 is respectively welded on the upper and lower end faces of the joint. The upper and lower chords and the upper and lower flanges of the two-way column seat node 10; the other end of the double-angle steel longitudinal girder 12 is connected to the single-angle steel transverse girder 13 parallel to the double-angle steel transverse girder 11, and the double-angle steel longitudinal girder 12 is connected to the The single-angle steel transverse main girder 13 is connected by connecting plates I15 of the upper and lower sections, and the upper and lower chords of the double-angle steel longitudinal main girder 12 and the single-angle steel transverse main girder 13 are connected by welding with the two connecting plates I15; the single-angle steel longitudinal secondary beam 14 is connected to the other end of the double-angle steel transverse main beam 11 and the single-angle steel transverse main beam 13, parallel to the double-angle steel longitudinal main beam 12, and the single-angle steel longitudinal secondary beam 14 is connected to the single-angle steel transverse main beam 13 The two connecting plates I15 at the upper and lower chord places are connected; the double-angle steel transverse main beam 11, the double-angle steel longitudinal main beam 12, the single-angle steel transverse main beam 13, and the single-angle steel longitudinal secondary beam 14 form a rectangular frame; The two rectangular frames are connected to form a spliced bottom frame; the single-angle steel longitudinal secondary beams 14 in the two rectangular frames are aligned and connected by bolts, and the two double-angle steel transverse main beams 11 are located on a straight line, and the two single-angle steel longitudinal beams 11 The angle steel transverse main beam 13 is located on a straight line; the bottom frame is connected to the two floor slabs 17 through the upper chord bolts of the angle steel beam; the upper and lower ends of the double angle steel transverse main beam 11 are connected to the three-way column seat The channel steel connecting plates in two opposite directions of the node 10 are connected by bolts, and the two single-angle longitudinal secondary beams 14 are connected to the channel steel connecting plates perpendicular to the two directions on the three-way column base node 10 ; All components of the A-plate are prefabricated and assembled in the factory;

In the prefabricated steel structure frame-central support system, as shown in Figures 12-13, the B-plate includes a double-angle steel longitudinal main beam 12, a single-angle steel transverse main beam 13, a single-angle steel longitudinal secondary beam 14, and a connecting plate I15 , connecting plate II16 and floor slab 17, it is characterized in that: double-angle steel longitudinal girder 12 and single-angle steel transverse girder 13 are perpendicular to each other, the upper and lower chords of double-angle steel longitudinal girder 12 ends and single-angle steel transverse girder 13 ends and The beam end sealing plates are welded and connected respectively, and then connected through the connecting plates I15 of the upper and lower sections, and the upper and lower chords of the double-angle steel longitudinal girder 12 and the single-angle steel transverse girder 13 are welded and connected with the two connecting plates I15; The other end of the angle steel longitudinal main beam 12 is connected with another single angle steel transverse main beam 13 which is horizontal to the single angle steel transverse main beam 13, and the double angle steel longitudinal main beam 12 and this single angle steel transverse main beam 13 pass through the upper and lower sections The connecting plate II16 is connected, and the upper and lower chords of the double angle steel longitudinal beam 12 and the single angle steel transverse main beam 13 are welded and connected with the two connecting plates II16; the single angle steel longitudinal beam 14 is connected on the two double single angle steel The other end of the transverse main beam 13 is horizontally opposite to the double-angle steel longitudinal main beam 12. The connection form of the angle steel transverse main beam 13 is the same; the described double angle steel longitudinal main beam 12, two single angle steel transverse main beams 13, and the single angle steel longitudinal secondary beam 14 form a rectangular frame; the two rectangular frames are connected to form A spliced bottom frame; the single-angle steel longitudinal secondary beams 14 in the two rectangular frames are aligned and connected by bolts, and the two horizontally opposite single-angle steel transverse main beams 13 of one rectangular frame and the two horizontally opposite horizontally opposite long-direction frames A single angle steel transverse main beam 13 is respectively located on a straight line; the bottom frame is connected with two floor slabs 17 through the bolts on the upper chord of the angle steel beam; all components of the B plate are prefabricated and assembled in the factory;

In the prefabricated steel structure frame-central support system, as shown in Figures 14-15, the C-plate includes a column base node 10, a double-angle steel longitudinal main beam 12, a single-angle steel transverse main beam 13, and a single-angle steel longitudinal secondary beam 14. The connecting plate I15, the connecting plate II16 and the floor slab 17 are characterized in that: the double-angle steel longitudinal girder 12 and the single-angle steel transverse girder 13 are perpendicular to each other, and all pass through the beam end sealing plate, and the three-way column base node 10 Two adjacent channel steel connecting plates are connected by bolts, and a connecting plate II16 is welded at the upper and lower end faces of the joint, and the two ends of the connecting plate II16 are respectively connected to the double-angle steel longitudinal girder 12 and the single-angle steel transverse girder 13 On the upper and lower chords; the other end of the double-angle steel longitudinal main beam 12 is connected with another single-angle steel transverse main beam 13 horizontal to the single-angle steel transverse main beam 13, and the double-angle steel longitudinal main beam 12 ends are connected with this single-angle steel transverse main beam. The upper and lower chords at the end of the beam 13 and the beam end sealing plate are respectively welded and connected, and the double-angle steel longitudinal main girder 12 is connected with the single-angle steel transverse main girder 13 through the connecting plate I15 of the upper and lower sections, and the double-angle steel longitudinal main girder 12 The upper and lower chords of the single-angle steel transverse main beam 13 are connected by welding with two connecting plates I15; 12 is horizontally opposite, one end of the single-angle longitudinal secondary beam 14 is welded to the upper and lower chords of the other end of the single-angle transverse main beam 13 and the beam end sealing plate, and the single-angle longitudinal secondary beam 14 is connected to the single-angle transverse main beam 13 between the two connecting plates I15 connected at the upper and lower chords; the other end of the single angle steel longitudinal secondary beam 14 and the single angle steel transverse main beam 13 are connected through two connecting plates II16 at the upper and lower chords Connect; described double-angle steel longitudinal main beam 12, two single-angle steel transverse main beams 13, and single-angle steel longitudinal secondary beam 14 constitute a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; two The single-angle steel longitudinal secondary beams 14 in the rectangular frame are aligned and connected by bolts, and the two horizontally opposite single-angle steel transverse main beams 13 of one rectangular frame and the two horizontally opposite single-angle steel transverse main beams 13 of the other long direction frame are respectively Located on a straight line; the upper and lower ends of the two single-angle steel transverse main beams 13 are connected by bolts to the channel steel connecting plates in the two opposite directions of the four-way column base node 10 through the beam end seal plate, and the two single-angle steel The longitudinal secondary beam 14 is connected to the channel steel connecting plate perpendicular to the two directions on the three-way column base node 10; the bottom frame is connected to the two floor slabs 17 through the upper bolts of the upper chord of the angle steel beam; All components of the C-plate are prefabricated and assembled in the factory;

In the high-rise prefabricated steel structure frame-central support system, the A plate and the B plate are horizontally aligned with the A plate and the B plate, and the double-angle steel longitudinal girder 12 of the A plate has one end of the connecting plate I15 and the end of the B plate One end of the double-angle steel longitudinal main beam 12 with the connection plate I15 is spliced with bolts through the beam end sealing plate; the two single-angle steel longitudinal beams 14 of the A plate have one end of the connection plate I15 and the two single-angle steel longitudinal secondary beams of the B plate One end of the beam 14 with the connecting plate I15 is spliced with the beam end sealing plate by bolts; the two single-angle steel transverse main beams 13 of the A plate and the two single-angle steel transverse main beams 13 of the B plate are aligned and connected by bolts; then Use bolts to cover the upper and lower sides of the splicing node; thus completing the splicing of A and B plates;

In the high-rise prefabricated steel frame-central support system, the B-plate and the C-plate are horizontally aligned, and the end of the double-angle steel longitudinal girder 12 of the B-plate with the connecting plate II16 is aligned with the C-plate The 10-channel steel connecting plate of the three-way column base node is connected by bolts through the beam end sealing plate; the end of the single-angle steel longitudinal beam 14 of the B plate with the connection plate II16 is connected to the four-way column base node 10 channel steel of the C plate The plates are connected by bolts through the beam end sealing plate; the upper and lower ends of the two single-angle steel transverse main beams 13 of the B plate are both passed through the beam end sealing plate and the channel steel connecting plates in two opposite directions of the four-way column base node 10 are bolted Connect the other end of the single angle steel transverse main beam 13 of the B plate through the beam end sealing plate and the channel steel connecting plate perpendicular to the channel steel connecting plate on the three-way column base node 10 of the C plate through the beam end sealing plate The plates are connected by bolts; at the joint plate of the single-angle steel transverse main beam 13 of the B plate and the single-angle steel transverse main beam 13 of the C plate, the single beams are spliced at a fixed distance by bolts, so that the two single beams are connected into a double beam ; Then use bolts to cover the upper and lower sides of the splicing node; thereby completing the splicing of the B board and the C board;

In the high-rise prefabricated steel structure frame-central support system, the C plate and the A plate are aligned horizontally, and the double angle steel longitudinal girder 12 of the C plate has one end of the connecting plate I15 and the end of the A plate The double-angle steel longitudinal main beam 12 has one end of the connecting plate I15 spliced with bolts through the beam end sealing plate; the two single-angle steel longitudinal beams 14 of the C plate have one end of the connecting plate I15 and the two single-angle steel longitudinal secondary beams of the A plate One end of the beam 14 with the connecting plate I15 is spliced with the beam end sealing plate by bolts; the two single-angle steel transverse main beams 13 of the C plate and the two single-angle steel transverse main beams 13 of the A plate are aligned and connected by bolts; then Use bolts to cover the upper and lower sides of the splicing node; thus completing the splicing of C and A plates;

In the above-mentioned new multi-story prefabricated steel structure frame-central support system, as shown in the attached drawings 17-24, the exploded detailed drawings of the new prefabricated beam-slab joints 1-8 are respectively made; as shown in the attached drawings 25-28 , and the exploded detailed diagrams of the new prefabricated beam-slab joints 9-12 are made respectively; the accompanying drawings 29-31 are the decomposed detailed diagrams of the connection forms of three different prefabricated columns and their corresponding nodes;

In the high-rise fabricated steel structure frame-central support system, the steel support members are composed of steel diagonal rods 18 and cantilever ends. The cantilever ends are connected to the bottom of the column of the steel frame structure by welding or connected to the steel frame structure by welding and bolts in the factory. At the upper and lower chords of the steel girder, the profiled steel slanting rod 18 and the cantilever ends at the upper and lower ends of each floor are connected by bolts at the construction site through the cover plate; type; 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 buckling-resistant energy-dissipating support or energy-dissipating damper is used support;

As shown in accompanying drawings 32-35, different arrangement forms of oblique supports have been made respectively. When the horizontal force acts on the structure, the horizontal force component of the shaped steel slanting rod 18 reduces or even offsets the horizontal force acting on the structure, so that the interstory displacement of the structure is small, which meets the requirements of the code, and the structure is in a safe state. the

In the above-mentioned new multi-story fabricated steel frame-central support system, as shown in Figures 36-37, the exploded detailed diagrams of the cantilever end and the connection node of the section steel diagonal bar are respectively made. the

The novel multi-story assembled steel structure frame-central support system of the present invention 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. And the support is applied to the high-rise steel structure frame support system, which improves the lateral stiffness of the structure, improves the deformation performance of the structure, and can effectively resist the earthquake. the

The new multi-high-rise assembled steel structure frame-central support system proposed by the present invention is a subversion of the traditional steel structure residential buildings, and truly realizes the factoryization, modularization, assembly and standardization of steel structure residential buildings, and fully utilizes steel structures. Advantages of Structure Homes and Structures. 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. the

Claims (7)

1. A multi-high-rise fabricated steel structure frame-central support system, comprising fabricated beam slabs, fabricated columns and section steel oblique supports, characterized in that: The prefabricated beam slab includes a hollow steel beam with a matching steel web, a column base node and a floor slab, and the hollow steel beam is connected with other hollow steel beams or column base nodes through a beam end sealing plate to form a beam slab The bottom frame, and then the floor slab is supported on the bottom frame of the beam slab and connected to form a prefabricated beam slab; the prefabricated beam slab is prefabricated in the factory and spliced at the construction site through its beam end sealing plate or column base node , 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 column to form a multi-layer steel frame structure, and the assembled column is located on the column base node of the assembled beam-slab; On the basis of the steel frame structure, the steel beams or column bottoms in the beam-slab layer of the frame structure are connected to the steel beams or the bottom of the column as lateral force-resisting members; Prefabricated in the factory and assembled by bolts at the construction site. the 2. A multi-story prefabricated steel structure frame-central support system according to claim 1, characterized in that: said prefabricated beam slab includes three specifications, namely A plate, B plate and C plate; The A plate includes a column base node (10), a double-angle steel transverse main beam (11), a double-angle steel longitudinal main beam (12), a single-angle steel transverse main beam (13), a single-angle steel longitudinal secondary beam (14), a connecting plate I (15), connecting plate II (16) and floor (17); double-angle steel longitudinal girders (12) and double-angle steel transverse girders (11) are perpendicular to each other, and all pass through the beam end sealing plate, and the two-way column base joint The channel steel connecting plates on (10) are connected by bolts, and a connecting plate II (16) is respectively welded on the upper and lower end faces of the joint, and the two ends of the connecting plate II (16) are respectively connected to the double angle steel longitudinal main beam (12) and the upper and lower chords of the double-angle steel transverse main beam (11) and the upper and lower flange plates of the two-way column base node (10); the other end of the double-angle steel longitudinal main beam (12) is connected parallel to the double-angle steel transverse main beam (11) The single-angle steel transverse main beam (13), the double-angle steel longitudinal main beam (12) and the single-angle steel transverse main beam (13) are connected through the connection plate I (15) of the upper and lower sections, and the double-angle steel longitudinal main beam (12) The upper and lower chords of the single-angle steel transverse main beam (13) are welded to two connecting plates I (15); the single-angle steel longitudinal secondary beam (14) is connected to the double-angle steel transverse main beam (11) and the single-angle steel The other end of the transverse main beam (13) is parallel to the double-angle steel longitudinal main beam (12), and the single-angle steel longitudinal secondary beam (14) and the single-angle steel transverse main beam (13) are connected by two Two connecting plates I (15) are connected; the double-angle steel transverse girder (11), the double-angle steel longitudinal girder (12), the single-angle steel transverse girder (13), and the single-angle steel longitudinal girder (14) form a rectangle Frame; the two rectangular frames are connected to form a spliced bottom frame; the single-angle steel longitudinal secondary beams (14) in the two rectangular frames are aligned and connected by bolts, and the two double-angle steel transverse main beams (11) Located on a straight line, two single-angle steel transverse main girders (13) are located on a straight line; the bottom frame is connected to two floor slabs (17) through upper chord bolts of angle steel beams; double-angle steel transverse main girders (11) The upper and lower ends of the upper and lower ends are connected by bolts to the channel steel connecting plates in the two opposite directions of the three-way column base node (10) through the beam end sealing plate, and the two single-angle steel longitudinal secondary beams (14) are connected to the three-way column The channel steel connecting plate perpendicular to the two directions on the seat node (10); all components of the A plate are prefabricated and assembled in the factory; The B-plate includes a double-angle steel longitudinal main beam (12), a single-angle steel transverse main beam (13), a single-angle steel longitudinal secondary beam (14), a connecting plate I (15), a connecting plate II (16) and a floor slab (17) The double-angle steel longitudinal main girder (12) and the single-angle steel transverse main girder (13) are perpendicular to each other, and the upper and lower chords and beam end seals at the ends of the double-angle steel longitudinal girder (12) and the single-angle steel transverse main girder (13) The plates are welded and connected respectively, and then connected through the upper and lower connecting plates I (15), and the upper and lower chords of the double-angle steel longitudinal girder (12) and the single-angle steel transverse girder (13) are connected with the two connecting plates I (15) connected by welding; the other end of the double-angle steel longitudinal main girder (12) is connected with another single-angle steel transverse girder (13) horizontal to the single-angle steel transverse main girder (13) through the connecting plate II (16) of the upper and lower sections. The main girder (13), and the upper and lower chords of the double-angle steel longitudinal girder (12) and the single-angle steel transverse girder (13) are connected by welding with two connecting plates II (16); the single-angle steel longitudinal girder (14) is connected At the other end of the two double-single-angle steel transverse main beams (13), horizontally opposite to the double-angle steel longitudinal main beams (12), the single-angle steel longitudinal secondary beams (14) and the two single-angle steel transverse main beams (13) The connection form is the same as that of the double-angle steel longitudinal girder (12) and the two single-angle steel transverse girders (13); the double-angle steel longitudinal girder (12), the two single-angle steel transverse girders (13), single-angle steel longitudinal secondary beams (14) form a rectangular frame; the two rectangular frames are connected to form a spliced bottom frame; the single-angle steel longitudinal secondary beams (14) in the two rectangular frames are aligned and passed Bolts are connected, and two horizontally opposite single-angle steel transverse main girders (13) of a rectangular frame and two horizontally opposite single-angle steel transverse main beams (13) of another long-direction frame are respectively located on a straight line; the bottom frame It is connected with two floor slabs (17) through the upper studs of the upper chord of the angle steel beam; all components of the B slab are prefabricated and assembled in the factory; The C plate includes a column base node (10), a double angle steel longitudinal main beam (12), a single angle steel transverse main beam (13), a single angle steel longitudinal secondary beam (14), a connecting plate I (15), a connecting plate II ( 16) and the floor (17); the double-angle steel longitudinal girder (12) and the single-angle steel transverse girder (13) are perpendicular to each other, and both pass through the beam end sealing plate, and are connected to the two phases on the three-way column base node (10). The adjacent channel steel connecting plates are connected by bolts, and a connecting plate II (16) is welded at the upper and lower ends of the joint, and the two ends of the connecting plate II (16) are respectively connected to the double-angle steel longitudinal girder (12) and the single-angle steel On the upper and lower chords of the transverse main beam (13); the other end of the double-angle steel longitudinal main beam (12) is connected with another single-angle steel transverse main beam (13) horizontal to the single-angle steel transverse main beam (13) by welding, The ends of the double-angle steel longitudinal girder (12) are welded to the upper and lower chords and beam end sealing plates at the end of the single-angle steel transverse girder (13), and the double-angle steel longitudinal girder (12) and the single-angle steel transverse main The beam (13) is connected by connecting plates I (15) of the upper and lower sections, and the upper and lower chords of the double-angle steel longitudinal girder (12) and the single-angle steel transverse girder (13) are connected with the two connecting plates I (15) ) connected by welding; the single-angle steel longitudinal beam (14) is connected to the other end of the two single-angle steel transverse main beams (13), and is horizontally opposite to the double-angle steel longitudinal beam (12), and the single-angle steel longitudinal beam (14 ) at one end and the upper and lower chords at the other end of the single-angle steel transverse main girder (13) and the beam end sealing plate are connected respectively by welding, and the single-angle steel longitudinal secondary beam (14) and the single-angle steel transverse main girder (13) are connected again It is connected by two connecting plates I (15) connected at the upper and lower chords; the other end of the single angle steel longitudinal secondary beam (14) and the single angle steel transverse main beam (13) are connected by two connecting plates at the upper and lower chords. Two connecting plates II (16) are connected; the double angle steel longitudinal girders (12), two single angle steel transverse girders (13), and single angle steel longitudinal girders (14) form a rectangular frame; the two The rectangular frames are connected to form a spliced bottom frame; the single-angle steel longitudinal secondary beams (14) in the two rectangular frames are aligned and connected by bolts, and the horizontally opposite two single-angle steel transverse main beams (13) and Two horizontally opposite single-angle steel transverse main beams (13) of the other long-direction frame are respectively located on a straight line; the upper and lower ends of the two single-angle steel transverse main beams (13) pass through beam end sealing plates and four-way column base joints 10) The channel steel connecting plates in two opposite directions are connected by bolts, and the two single angle steel longitudinal beams (14) are connected to the grooves perpendicular to the two directions on the three-way column base node (10) steel connecting plate; the bottom frame is connected with two floor slabs (17) through the upper studs of the upper chord of the angle steel beam; all components of the C plate are prefabricated and assembled in the factory; In the high-rise prefabricated steel structure frame-central support system, the A plate and the B plate are aligned horizontally, and the double angle steel longitudinal girder (12) of the A plate is connected to the connecting plate I (15). One end and the double angle steel longitudinal main girder (12) of plate B with connection plate I (15) are spliced with bolts through the beam end sealing plate; the two single angle steel longitudinal beams (14) of plate A One end of (15) and one end of the two single-angle steel longitudinal beams (14) of the B plate with the connection plate I (15) are spliced by bolts to the beam end sealing plate; the two single-angle steel transverse main beams of the A plate ( 13) Align with the two single-angle steel transverse main beams (13) of plate B and connect them with bolts; then use bolts to cover the upper and lower sides of the splicing joint; thus completing the splicing of plate A and plate B; In the high-rise prefabricated steel frame-central support system, the B-plate and C-plate are horizontally aligned, and the double-angle steel longitudinal girder (12) of the B-plate has a connecting plate II (16) One end of plate C and the three-way column base node (10) of plate C are connected by bolts through the beam end sealing plate; the end of the single angle steel longitudinal beam (14) of plate B with connecting plate II (16) is connected with The four-way column base node (10) of plate C is connected by bolts through the beam end sealing plate; the upper and lower ends of the two single-angle steel transverse main beams (13) of plate B are connected The two channel steel connecting plates in the opposite directions of the column base node (10) are connected by bolts, and the other end of the single-angle steel transverse main beam (13) of the B plate is respectively passed through the beam end sealing plate and the three-way column base node of the C plate (10) The channel steel connecting plate perpendicular to the channel steel connecting plate is connected by bolts through the beam end sealing plate; the single angle steel transverse main beam (13) on the B plate and the single angle steel transverse main beam (13) on the C plate ) at the gusset plate to splice the single beams at intervals of a fixed distance through bolts, so that two single beams are connected to form a double beam; In the high-rise prefabricated steel structure frame-central support system, the C plate and the A plate are horizontally aligned, and the double angle steel longitudinal girder (12) of the C plate is connected to the connecting plate I (15). One end of the double-angle steel longitudinal main beam (12) of plate A with connecting plate I (15) is spliced with bolts through the beam end sealing plate; the two single-angle steel longitudinal beams (14) of plate C One end of (15) and one end of the two single-angle steel longitudinal beams (14) of the A plate with the connection plate I (15) are spliced by bolts to the beam end sealing plate; the two single-angle steel transverse main beams of the C plate ( 13) Align with the two single-angle steel transverse main girders (13) of plate A and connect them with bolts; then add cover plates with bolts on the upper and lower sides of the splicing joint; thus complete the splicing of plate C and plate A. the 3. A multi-story prefabricated steel structure frame-central support system according to claim 1, characterized in that: the prefabricated beams and slabs are respectively connected to the prefabricated columns by bolts at the nodes of the column bases to form Frame structure; the steel oblique support member is composed of a steel oblique rod (18) and a cantilever end, and the cantilever end is connected to the bottom of the column of the steel frame structure by welding in the factory or connected to the upper and lower chords of the steel beam of the steel frame structure by welding and bolts At the place, the diagonal bracing (18) and the cantilever ends at the upper and lower ends of each floor are connected by bolts on the construction site through the cover plate; The section form is H-shaped steel, or I-shaped steel, double channel steel composite section, double angle steel composite section; the diagonal brace is ordinary high-strength steel strip, or is supported by anti-buckling energy-dissipating support or energy-dissipating damper. the 4. The multi-story prefabricated steel structure frame-central support system according to claim 1, characterized in that: the beams used in the prefabricated beam slabs are hollow steel girders configured with profiled steel webs; Vierendeel angle beams with channel steel webs can be used, including angle steel upper and lower chords (1), channel steel webs (2), channel steel webs are perpendicular to the chords, and the upper and lower ends of the webs and the upper and lower chords All angle steel beams are provided with connecting holes at regular intervals on the upper and lower chords and channel steel web members, and two single angle steel beams can be used to form a double Angle steel beam; Or use an open-web angle steel beam equipped with T-shaped steel webs, including angle steel upper and lower chords (1), T-shaped steel webs (3), the T-shaped steel webs are perpendicular to the chords, and the upper and lower ends of the T-shaped steel webs and the upper and lower The angle steel limbs of the chord are welded at the root; all angle steel beams are provided with connection holes at regular intervals on the upper and lower chords and T-shaped steel webs, and two single angle steel beams can be connected by bolts when the prefabricated beam slab is assembled. Composed of double angle steel beams; For the hollow steel beam configured with shaped steel webs, angle steel, channel steel or box steel can be used for the upper and lower chords, channel steel or T-shaped steel can be used for the webs, and the webs are all perpendicular to the chords, and the webs The upper and lower ends are welded to the upper and lower chords, and connecting holes are arranged on the chords and the webs. the 5. In the multi-high-rise assembled steel structure frame-central support system according to claim 1, it is characterized in that: its column base node is welded by box-shaped column, channel steel connecting plate and flange plate, according to the welding groove The number of steel connecting plates is different as two-way column base, three-way column base and four-way column base; two flange plates I (4) are welded on the upper and lower ends of the box-shaped column (5), and then the two channel steel connecting plates (6) Welded on the adjacent sides of the box-shaped column (5) to form a two-way column seat for connection with the corner column of the flange plate; two flange plates I (4) are welded at the upper and lower ends of the box-shaped column (5) ), and then three pieces of channel steel connecting plates (6) are welded to the three sides of the box-shaped column (5) to form a three-way column seat, which is used for connection with the side column of the flange plate; at the upper and lower ends of the box-shaped column (5) Weld two flange plates I (4), and then weld four channel steel connecting plates (6) to the four sides of the box-shaped column (5) to form a four-way column seat for connection with the center column of the flange plate; There are bolt holes on the web of the channel steel connecting plate (6), which is convenient to be connected with the beam end sealing plate of the angle steel beam to form the assembled beam plate with bolts. the 6. In the multi-story fabricated steel structure frame-central support system according to claim 1, it is characterized in that: the fabricated column is composed of a box-shaped column (5) and a flange plate II (7) or a flange plate III ( 8) or flange plate IV (9) welded, according to the shape of the flange plate can be divided into flange plate corner column, flange plate side column and flange plate center column; flange plate III (8) in The upper and lower parts of the box-shaped column (5) are welded to form the corner column of the flange plate; the flange plate II (7) is welded on the upper and lower parts of the box-shaped column (5) to form the side column of the flange plate; the flange plate IV ( 9) Weld the upper and lower parts of the box-shaped column (5) to form the middle column of the flange plate; the three kinds of assembled columns are all prefabricated in the factory, and bolts are used on the construction site to connect the flange plate of the column to the assembly The flange plate of the column seat node in the type beam slab is connected to realize the assembly of the column and the beam slab, thereby forming a steel frame structure. the 7. In the multi-story prefabricated steel frame-central support system according to claim 1, the floor (17) can use profiled steel plate concrete composite floor, prefabricated integral concrete floor, laminated composite floor, densely ribbed OSB slab, light steel floor slab, reinforced truss laminated slab, fiber cement pressure slab. the

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