Fabricated steel structure system with embedded composite energy dissipation damping device easy to replace

Abstract

The utility model provides a fabricated steel structure system with an embedded composite energy dissipation damping device easy to replace. The fabricated steel structure system comprises a steel column, a steel beam; the composite energy-dissipation damping beam-column joint device comprises two sets of beam-column joint bending-shear composite energy-dissipation damping devices which are oppositely connected to the two sides of a web through bolts at the ends of a steel beam and are connected with a cantilever beam through bolts at the same time; the double-insurance composite energy-dissipation damping column base node device comprises two sets of column base node bending-shearing composite energy-dissipation damping devices which are oppositely connected to the two sides of a web of the steel column through bolts at the column base position and connected with the ground beam through bolts at the same time. The two sets of tension-shear composite energy dissipation damping devices are oppositely connected to the two flanges of the steel column through bolts at the column foot position, and meanwhile the two sets of tension-shear composite energy dissipation damping devices are connected with the ground beam through bolts. According to the structure system, under the action of small and medium earthquakes, the composite energy dissipation damping self-resetting beam column joint device is in an elastic state; under the action of large and super-large earthquakes, the beam-column joint bending-shearing composite energy dissipation damping device participates in energy dissipation, and if irreversible plastic deformation happens to an energy dissipation part, the function can be recovered by disassembling bolts and replacing the energy dissipation part.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to prefabricated assembled structures, and specifically to an assembled steel structure system with an embedded easily replaceable composite energy dissipation damping device. Background Art

[0002] The self-resetting energy-absorbing structure is a new type of prefabricated steel structure building system. This new type of structure aims to reduce the residual deformation of the building structure after an earthquake. During the earthquake, it consumes energy through specific components, and after the earthquake, it can rely on its own structural characteristics to restore to its original state, and can achieve the initial design function without major repairs. This new structural system can not only effectively control the maximum deformation of the structure, but also reduce the residual deformation of the structure, and has attracted widespread attention from engineers and researchers. From the perspective of the entire life cycle, the self-resetting energy-absorbing structure only needs to replace the energy-absorbing components damaged in the earthquake during post-earthquake repair. The steel structure with self-resetting nodes can save maintenance and reinforcement costs, and can save a lot of repair time, which is of great significance to improving the efficiency of post-disaster reconstruction and saving construction costs. The rigid nodes in traditional steel frames are prone to more serious brittle failure and residual deformation, and the cost of repair and reconstruction after an earthquake is high. Therefore, the development of self-resetting beam-column nodes with good energy dissipation capacity and self-resetting performance is an urgent problem to be solved in this type of structure. Summary of the invention

[0003] In view of the deficiencies of the prior art, the utility model provides an assembled steel structure system with an embedded easily replaceable composite energy dissipation damping device, aiming to solve the problems of the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The utility model provides an assembled steel structure system with an easily replaceable composite energy-absorbing and damping device embedded therein, comprising: a steel column with a cantilever beam thereon, both of which are I-shaped / H-shaped; a steel beam, both ends of which are butt-jointed with the cantilever beams on the steel columns on both sides, also in the I-shaped / H-shaped; a composite energy-absorbing and damping self-resetting beam-column node device, used to connect the steel beam and the cantilever beams on the steel columns on both sides, comprising: two sets of beam-column node bending-shear composite energy-absorbing and damping devices, which are oppositely connected to the two sides of the web at the end of the steel beam by bolts, and are connected to the cantilever beam by bolts at the same time; a double-insurance composite energy-absorbing and damping self-resetting column foot node device, used to connect the steel column and the ground beam, comprising: two sets of column foot node bending-shear composite energy-absorbing and damping devices, which are oppositely connected to the two sides of the web of the steel column at the column foot by bolts, and are connected to the ground beam by bolts at the same time; and two sets of tension-shear composite energy-absorbing and damping devices, which are oppositely connected to the two flanges of the steel column at the column foot by bolts, and are connected to the ground beam by bolts at the same time.

[0006] In some embodiments, the beam-column node bending-shear composite energy absorption damping device is M-shaped, including: two U-shaped bending-shear composite energy absorption components, which are arranged in parallel and horizontally in an M shape between the upper and lower flanges of the steel beam, and the upper flange of the upper U-shaped bending-shear composite energy absorption component and the lower flange of the lower U-shaped bending-shear composite energy absorption component are both provided with bolt holes, and the upper and lower flanges of the steel beam are correspondingly provided with bolt holes, and the two U-shaped bending-shear composite energy absorption components are connected to the upper and lower flanges of the steel beam through a group of high-strength bolts; an intermediate connecting piece is arranged between the upper and lower U-shaped bending-shear composite energy absorption components, and is respectively connected and fixed to the two U-shaped bending-shear composite energy absorption components, and the intermediate connecting piece is connected to the steel beam and the cantilever beam through a group of high-strength bolts.

[0007] In some embodiments, the U-shaped bending-shear composite energy-absorbing component includes: a U-shaped connector, consisting of upper and lower flanges and an arc-shaped web; an inner shear plate, arranged between the upper and lower flanges of the U-shaped connector, and the inner shear plate is welded to the upper and lower flanges of the U-shaped connector only on the upper and lower sides; and / or, the intermediate connector is a channel steel connector, consisting of left and right flanges and a web, the web of the channel steel connector and the flange close to the side of the cantilever beam are both provided with bolt holes, the web of the steel beam is correspondingly provided with bolt holes, the end of the cantilever beam is provided with an end plate, and the end plate is also correspondingly provided with bolt holes, and the channel steel connector is connected to the steel beam and the end plate through a group of high-strength bolts.

[0008] In some embodiments, the column base node bending-shear composite energy absorption damping device is M-shaped, including: two U-shaped bending-shear composite energy absorption components, which are vertically arranged in parallel between the left and right flanges of the steel column in an M shape, and the left flange of the left U-shaped bending-shear composite energy absorption component and the right flange of the right U-shaped bending-shear composite energy absorption component are both provided with bolt holes, and the left and right flanges of the steel column are correspondingly provided with bolt holes, and the two U-shaped bending-shear composite energy absorption components are connected to the left and right flanges of the steel column through a group of high-strength bolts; an intermediate connecting piece is arranged between the left and right U-shaped bending-shear composite energy absorption components, and is respectively connected and fixed to the two U-shaped bending-shear composite energy absorption components, and the intermediate connecting piece is connected to the steel column and the ground beam through a group of high-strength bolts.

[0009] In some embodiments, the U-shaped bending-shear composite energy-absorbing component includes: a U-shaped connector, consisting of left and right flanges and an arc-shaped web; an inner shear plate, arranged between the left and right flanges of the U-shaped connector, and the inner shear plate is welded to the left and right flanges of the U-shaped connector only on the left and right sides; and / or, the intermediate connector is a channel steel connector, consisting of upper and lower flanges and a web, the web of the channel steel connector and the flange close to the side of the ground beam are both provided with bolt holes, the web of the steel column is correspondingly provided with bolt holes, and the upper flange of the ground beam is also correspondingly provided with bolt holes, and the channel steel connector is connected to the steel column and the ground beam through a group of high-strength bolts.

[0010] In some embodiments, the left and right flanges of the U-shaped connector are of unequal lengths, the flange close to the steel column flange is shortened, and a pad strip is welded at the shortened flange of the U-shaped connector on the inner side of the steel column flange to make the left and right flanges equal in length.

[0011] In some embodiments, the tension-shear composite energy absorption and damping device includes: an L-shaped tension-compression energy absorption plate, one L-shaped leg is connected to the steel column through a high-strength bolt group, and the other L-shaped leg is connected to the ground beam through a high-strength bolt group; a folded shear energy absorption part, one folded end is fixed to one L-shaped leg of the L-shaped tension-compression energy absorption plate, and the other folded end is fixed to the other L-shaped leg of the L-shaped tension-compression energy absorption plate.

[0012] In some embodiments, the folding shear energy absorbing member is τ-shaped, including: two I-shaped shear plates, arranged vertically and parallelly opposite each other; a plurality of ribs, symmetrically welded in pairs at equal intervals on the front and rear sides of the webs of the two I-shaped shear plates; an H-shaped connecting plate, welded and fixed to the upper ends of the two I-shaped shear plates, and welded and fixed to one limb of the L-shaped tensile and compressive energy absorbing plate, and the lower ends of the two I-shaped shear plates are welded and fixed to the other limb of the L-shaped tensile and compressive energy absorbing plate; or, the folding shear energy absorbing member is F-shaped, including: two F-shaped shear plates, arranged vertically and parallelly opposite each other; a plurality of ribs, symmetrically welded in pairs at equal intervals on the front and rear sides of the webs of the two F-shaped shear plates, and on the upper and lower sides of the flanges of the two F-shaped shear plates; and one end of the flanges of the two F-shaped shear plates is welded and fixed to one limb of the L-shaped tensile and compressive energy absorbing plate, and one end of the web is welded and fixed to the other limb of the L-shaped tensile and compressive energy absorbing plate.

[0013] In some embodiments, the composite energy-absorbing and damping beam-column node device also includes: two sets of beam-column node self-resetting devices, including prestressed cables and prestressed tooling, the prestressed tooling is oppositely fixed on both sides of the cantilever beam web, and the two ends of the prestressed cable are anchored to the prestressed tooling on the cantilever beams on both sides.

[0014] In some embodiments, the double-insurance composite energy-absorbing and damping column base node device also includes: two sets of column base node self-resetting devices, each including a prestressed cable and a prestressed tooling, one group of the prestressed tooling is oppositely fixed on both sides of the web of the ground beam, and the other group is oppositely fixed on both sides of the web of the steel column at a predetermined height, and both ends of the prestressed cable are anchored to the two groups of the prestressed tooling.

[0015] The beneficial effects of the utility model compared with the prior art are:

[0016] (1) The utility model is a prefabricated steel structure system with an easily replaceable composite energy dissipation and damping device embedded in it. Under the action of small and medium earthquakes, the composite energy dissipation and damping beam-column node device is in an elastic state; under the action of large and super-large earthquakes, the beam-column node bending-shear composite energy dissipation and damping device participates in energy dissipation. As the earthquake action increases, the beam-column node rotates, and the upper and lower flanges of the U-shaped bending-shear composite energy dissipation component in the beam-column node bending-shear composite energy dissipation and damping device mutually shift to resist bending energy dissipation, driving the internal shear plate built into the U-shaped bending-shear composite energy dissipation component to resist shear energy dissipation, and then the residual deformation of the node is reduced by the self-resetting device. If the energy dissipation component undergoes irreversible plastic deformation, the function can be restored by removing the bolts and replacing the energy dissipation component.

[0017] (2) The utility model is a prefabricated steel structure system with an easily replaceable composite energy dissipation and damping device embedded in it. Under the action of small and medium earthquakes, the double insurance composite energy dissipation and damping column foot node device is in an elastic state; under the action of large and super large earthquakes, the column foot node bending-shear composite energy dissipation and damping device and the tension-shear composite energy dissipation and damping device both participate in energy dissipation. With the increase of earthquake action, one side of the column foot rises, the τ-shaped (or F-shaped) connection device in the tension-shear composite energy dissipation and damping device dissipates energy by shear, the L-shaped tension-compression energy dissipation plate dissipates part of the energy under tension and compression, the column foot node bending-shear composite energy dissipation and damping device dissipates energy by bending-shear composite energy dissipation, the left and right flanges of the U-shaped bending-shear composite energy dissipation component dissipate energy by bending, driving the internal shear plate built into the U-shaped bending-shear composite energy dissipation component to dissipate energy by shear, forming a double insurance energy dissipation mechanism. The two dampers that dissipate energy through different force mechanisms can effectively prevent the shortcomings of overall structural failure caused by the failure of a single damper, making the overall structure safe. After energy dissipation, the residual deformation of the node is reduced by the self-resetting device. If irreversible plastic deformation occurs in the energy-consuming component, the function can be restored by removing the bolts and replacing the energy-consuming component.

[0018] (3) In the double insurance composite energy dissipation damping column foot node device, in order to ensure that the U-shaped bending shear composite energy dissipation component of the column foot node bending shear composite energy dissipation damping device can exert its energy dissipation capacity, the left and right flanges of the U-shaped connector are of unequal length, and a pad strip is welded at the bottom flange of the steel column. The pad strip is connected to the short flange of the U-shaped connector to make the left and right sides of the U-shaped connector flush, all of which are to ensure that under the action of an earthquake, the U-shaped bending shear composite energy dissipation component fully deforms and dissipates energy. The thickness of the flange on the side where the channel steel connector is connected to the bolt is thickened to facilitate the fixing of the long flange side of the U-shaped connector, ensuring that it has a displacement difference with the short flange side, so that the inner shear plate can better dissipate energy.

[0019] (4) All components of the steel frame system device of the utility model are processed in the factory and are connected and installed on site with high-strength bolts, so the assembly is good.

[0020] (5) The utility model can be applied to single-layer, multi-layer and high-rise building systems. The structural system is flexible and has good earthquake resistance. It can be widely used in light industrial plants, high-rise building systems, etc.

[0021] It should be understood that the implementation of any embodiment of the present utility model does not mean that multiple or all of the above-mentioned beneficial effects must be possessed or achieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0024] Figure 1 A three-dimensional diagram of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0025] Figure 2 It is a front view of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0026] Figure 3 This is a disassembled diagram of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0027] Figure 4 It is a three-dimensional diagram of the beam-column node of a prefabricated steel structure system with an embedded easily replaceable composite energy-absorbing damping device.

[0028] Figure 5 It is a front view of a beam-column node of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0029] Figure 6 This is a diagram of the beam-column node breakdown of a prefabricated steel structure system with an embedded easily replaceable composite energy-absorbing damping device.

[0030] Figure 7 The present invention is a structural diagram of a beam-column node bending-shear composite energy dissipation damping device of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0031] Figure 8 It is a three-dimensional diagram of the column base node of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0032] Fig. 9 It is a front view of the column base node of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0033] Fig.10 This is a disassembled diagram of the column base node of a prefabricated steel structure system with an embedded easily replaceable composite energy-absorbing damping device.

[0034] Fig.11 The present invention is a structural diagram of a column base node bending-shear composite energy dissipation damping device of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0035] Fig.12 The diagram is a structural diagram of a folded shear energy dissipation component (τ-shaped) of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0036] Fig.13 The diagram is a structural diagram of a folded shear energy dissipation component (F-shaped) of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0037] Fig.14 The figure is a floor diagram of a prefabricated steel structure system with an embedded easily replaceable composite energy dissipation damping device.

[0038] Fig.15 It is a floor schematic diagram of a prefabricated steel structure-shear wall system with an embedded composite energy dissipation damping device.

[0039] Fig.16 It is a floor schematic diagram of an assembled steel structure-energy dissipation support system with an embedded composite energy dissipation damping device.

[0040] Markings in the figure:

[0041] 100-Assembled steel structure system with built-in easily replaceable composite energy dissipation damping device;

[0042] 1-steel column; 2-cantilever beam; 3-steel beam; 4-beam-column node bending-shear composite energy dissipation damping device; 5-beam-column node self-resetting device; 6-weakened cover plate; 7-U-shaped connector; 8-middle connector; 9-inner shear plate; 10-steel column web stiffener; 11-column foot node bending-shear composite energy dissipation damping device; 12-tension-shear composite energy dissipation damping device; 13-column foot node self-resetting device; 14-prestressed tooling; 15-prestressed cable; 16-folded shear energy dissipation part; 17-L-shaped tension-compression energy dissipation plate; 18-triangular rib plate; 19-high-strength bolt group; 20-ground beam; 21-cantilever beam end plate; 22-disc spring; 23-shear wall; 24-energy dissipation support.

[0043] In the various drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in combination with the embodiment and the drawings. Here, the illustrative embodiment of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] It should be understood that the terms "include / comprise", "consist of..." or any other variations are intended to cover non-exclusive inclusion, so that a product, device, process or method that includes a series of elements includes not only those elements, but also may include other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of more restrictions, the elements defined by the sentence "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method that includes the elements.

[0047] It is also necessary to understand that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and cannot be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] like Figure 1-3As shown, the utility model provides an assembled steel structure system 100 with an embedded easily replaceable composite energy dissipation and damping device, which mainly includes: steel columns, steel beams, composite energy dissipation and damping beam-column node devices, double-insurance composite energy dissipation and damping column foot node devices, and a high-strength bolt group.

[0050] Specifically, the steel column 1 is provided with a cantilever beam 2, the length of which is determined according to the force analysis and design, and the cantilever beams 2 on the steel columns 1 on both sides are butt-connected with the two ends of the steel beam 3 to avoid the direct connection between the steel beam 3 and the steel column 1, so that the force at the beam-column node is more reasonable. The cantilever beam 2 is connected to the steel beam 3 through a composite energy dissipation damping beam-column node device, and the bottom of the steel column 1 is connected to the ground beam through a double-insurance composite energy dissipation damping column foot node device, forming an assembled steel structure system with an embedded and easily replaceable composite energy dissipation damping device.

[0051] In the utility model, the steel column 1, the cantilever beam 2 and the steel beam 3 all adopt an I-shaped / H-shaped cross-section form, so as to embed and arrange a composite energy dissipation damping beam-column node device and a double-insurance composite energy dissipation damping column foot node device between the two flanges and the web.

[0052] Steel column web stiffening plates 10 are arranged on both sides of the web of the steel column 1 corresponding to the upper and lower flanges of the cantilever beam 2. The two steel column web stiffening plates 10 are flush with the upper and lower flanges of the cantilever beam 2 and are welded to the web and left and right flanges of the steel column 1 to strengthen the upper and lower flanges of the cantilever beam 2 near the column end.

[0053] See also Figure 4 The composite energy dissipation and damping beam-column node device is used to connect the cantilever beam 2 and the steel beam 3 on the steel column 1, and includes two sets of beam-column node bending-shear composite energy dissipation and damping devices 4. It is easy to understand that the two sets of beam-column node bending-shear composite energy dissipation and damping devices 4 are used to participate in energy dissipation under earthquake action. The specific energy dissipation mechanism will be described in detail in combination with the specific structure later.

[0054] Combination Figure 5 , Figure 6 The beam-column node bending-shear composite energy dissipation damping device 4 is provided with bolt holes corresponding to the web and upper and lower flanges of the steel beam 3. Two sets of beam-column node bending-shear composite energy dissipation damping devices 4 are connected to the two sides of the web of the steel beam 3 oppositely at the end of the steel beam 3 through a high-strength bolt group 19, and are symmetrically arranged on both sides of the web and fixed to the end of the steel beam 3. At the same time, the beam-column node bending-shear composite energy dissipation damping device 4 is also connected to the cantilever beam 2 through a high-strength bolt group 19. In this way, the connection and fixation of the steel beam 3 and the cantilever beam 2 are realized with the help of the beam-column node bending-shear composite energy dissipation damping device 4.

[0055] The composite energy dissipation and damping beam-column node device may also include two sets of beam-column node self-resetting devices 5, which are used to reduce the residual deformation of the node after an earthquake. Figure 5 , Figure 6As shown, the two sets of beam-column node self-resetting devices 5 both include prestressed cables 15 and prestressed fixtures 14. The prestressed fixtures 14 are fixed oppositely on both sides of the web of the cantilever beam 2 and are symmetrically arranged on both sides of the web. The cantilever beams 2 on the steel columns 1 on both sides are arranged with prestressed fixtures 14. The prestressed cables 15 are arranged along the entire length of the steel beam 3 and are anchored at both ends to the prestressed fixtures 14 of the cantilever beams 2 on both sides, thereby realizing the function of reducing the residual deformation of the node after an earthquake.

[0056] The prestressed tooling 14 is composed of two long connecting plates with two equidistantly spaced ribs welded in the middle. The upper and lower ends of the two long connecting plates are welded and fixed to the upper and lower flanges of the cantilever beam 2.

[0057] Specifically, two prestressed cables 15 are arranged on each side of the web of the steel beam 3 , and the two prestressed cables 15 are symmetrically arranged along the upper and lower flanges close to the steel beam 3 .

[0058] Continue to see Figure 6 , Figure 7 The utility model provides a better beam-column node bending-shear composite energy dissipation damping device 4, which is composed of two U-shaped bending-shear composite energy dissipation components and an intermediate connecting member 8. The two U-shaped bending-shear composite energy dissipation components have the same structure and are arranged in parallel and transversely symmetrically between the upper and lower flanges of the steel beam 3 in an M shape. The intermediate connecting member 8 connects the upper and lower U-shaped bending-shear composite energy dissipation components to form a whole. The beam-column node bending-shear composite energy dissipation damping device 4 is specifically embedded in the inner side of the prestressed cable 15, and the reasonable layout avoids interference with the layout of the prestressed cable 15.

[0059] Specifically, the upper flange of the upper U-shaped bending-shear composite energy absorption component and the lower flange of the lower U-shaped bending-shear composite energy absorption component are both provided with bolt holes, and the upper and lower flanges of the steel beam 3 are correspondingly provided with bolt holes. The two U-shaped bending-shear composite energy absorption components are connected to the upper and lower flanges of the middle beam 3 through a high-strength bolt group 19.

[0060] In one embodiment, two U-shaped bending-shearing composite energy dissipation components each include a U-shaped connector 7 and an inner shear plate 9, the U-shaped opening of the U-shaped connector 7 faces the cantilever beam 2, the U-shaped connector 7 has upper and lower flanges and an arc-shaped web, the arc-shaped web can be designed as a C-shape or a semicircle, an inner shear plate 9 is arranged between the upper and lower flanges of the U-shaped connector 7, and the inner shear plate 9 is only welded to the upper and lower flanges of the U-shaped connector 7 on the upper and lower sides, and the left and right sides are not connected, that is, the left side of the inner shear plate 9 is not connected to the cantilever beam end plate 21, and the right side is not connected to the arc-shaped web. In this way, when the column swings, it is easy to cause the upper and lower flanges of the U-shaped connector 7 to displace, drive the inner shear plate 9 to displace and deform, and dissipate shear energy.

[0061] The intermediate connecting member 8 is arranged between the upper and lower U-shaped bending-shear composite energy absorption components, and is respectively welded and fixed to the two U-shaped bending-shear composite energy absorption components. Corresponding bolt holes are opened on the intermediate connecting member 8 and the cantilever beam 2. The intermediate connecting member 8 is connected to the cantilever beam 2 through a high-strength bolt group 19.

[0062] In one embodiment, the intermediate connecting member 8 is a channel steel connecting member, which is composed of left and right flanges and a web. The channel steel is open and away from the steel beam 3, and the flange of the channel steel close to the cantilever beam 2 is provided with bolt holes, and the web of the channel steel is also provided with bolt holes. The end of the cantilever beam 2 is provided with a cantilever beam end plate 21, and the cantilever beam end plate 21 is correspondingly provided with bolt holes, and the web of the steel beam 3 is also correspondingly provided with bolt holes. The intermediate connecting member 8 is connected and fixed to the cantilever beam end plate 21 and the web of the steel beam 3 by a high-strength bolt group 19. In this way, the two U-shaped bending-shear composite energy-absorbing components are connected and fixed to both the steel beam 3 and the cantilever beam 2 through the channel steel.

[0063] Under the action of small and medium earthquakes, the M-shaped composite energy dissipation and damping beam-column node device is in an elastic state; under the action of large and super large earthquakes, the M-shaped bending-shear composite energy dissipation and damping device of the beam-column node participates in energy dissipation. As the earthquake action increases, the beam-column node rotates, and the two flanges of the U-shaped bending-shear composite energy dissipation component in the M-shaped bending-shear composite energy dissipation and damping device of the beam-column node shift mutually to resist bending energy dissipation, driving the built-in internal shear plate to resist shear energy dissipation, and then the residual deformation of the node is reduced by the self-resetting device. If the energy dissipation component undergoes irreversible plastic deformation, the function can be restored by removing the bolts and replacing the energy dissipation component.

[0064] Another example Figure 1-3 , Figure 8-10 As shown, the double insurance composite energy dissipation and damping column foot node device is used to connect the steel column 1 and the ground beam 20, including two sets of column foot node bending shear composite energy dissipation and damping devices 11 and two sets of tension shear composite energy dissipation and damping devices 12. It is easy to understand that the two sets of column foot node bending shear composite energy dissipation and damping devices 11 are used to participate in bending and shear energy dissipation under earthquake action, and the two sets of tension shear composite energy dissipation and damping devices 12 also participate in tension, compression and shear energy dissipation under earthquake action, forming a double insurance energy dissipation mechanism. The specific energy dissipation mechanism will be described in detail in conjunction with the specific structure later.

[0065] Continue to see Figure 8-10 The column foot node bending-shear composite energy dissipation damping device 11 is provided with bolt holes corresponding to the web and left and right flanges of the steel column 1. Two sets of column foot node bending-shear composite energy dissipation damping devices 11 are connected to the two sides of the web of the steel column 1 oppositely at the column foot through high-strength bolt groups 19, and are symmetrically arranged on both sides of the web. At the same time, they are connected to the ground beam 20 through the high-strength bolt group 19. In this way, the column foot node bending-shear composite energy dissipation damping device 11 is used to connect and fix the ground beam 20 from both sides of the web of the steel column 1.

[0066] Two sets of tension-shear composite energy dissipation and damping devices 12 are connected to the two flanges of the steel column 1 at the column foot through high-strength bolt groups 19, and are specifically symmetrically arranged on the outside of the flanges, and are connected to the ground beam 20 through high-strength bolt groups 19 at the same time. In this way, the two sets of tension-shear composite energy dissipation and damping devices 12 are connected and fixed to the ground beam 20 from both sides of the flange of the steel column 1.

[0067] The double insurance composite energy dissipation damping column foot node device can also include two sets of column foot node self-resetting devices 13, which are used to reduce the residual deformation of the node after the earthquake. The two sets of column foot node self-resetting devices 13 are similar to the beam-column node self-resetting devices 5, and both include prestressed cables 15 and prestressed fixtures 14. The difference is that there are two groups of prestressed fixtures 14 here, one of which is fixed oppositely to the two sides of the web of the ground beam 20, and is symmetrically arranged on both sides of the web, and the other group is fixed oppositely to the two sides of the web of the steel column 1 at a predetermined height, and is symmetrically arranged on both sides of the web. The prestressed cable 15 is arranged between the two groups of prestressed fixtures 14 and anchored to the prestressed fixtures 14 at both ends, realizing the function of reducing the residual deformation of the node after the earthquake.

[0068] Similarly, two prestressed cables 15 are arranged on each side of the web of the steel column 1 , and the two prestressed cables 15 are symmetrically arranged along the left and right flanges close to the steel column 1 .

[0069] See also Fig.11 The utility model provides a better column foot node bending shear composite energy dissipation damping device 11, which is similar to the beam-column node bending shear composite energy dissipation damping device 4, and is composed of two U-shaped bending shear composite energy dissipation components and an intermediate connecting member 8. The two U-shaped bending shear composite energy dissipation components have the same structure and are arranged in parallel and vertically symmetrically between the left and right flanges of the steel column 1 in an M shape. The intermediate connecting member 8 connects the left and right U-shaped bending shear composite energy dissipation components to form a whole. The column foot node bending shear composite energy dissipation damping device 11 is embedded in the inner side of the prestressed cable 15.

[0070] Similarly, the left flange of the left U-shaped bending-shear composite energy absorption component and the right flange of the right U-shaped bending-shear composite energy absorption component are both provided with bolt holes, and the left and right flanges of the steel column 1 are correspondingly provided with bolt holes. The two U-shaped bending-shear composite energy absorption components are connected to the left and right flanges of the steel column 1 through a high-strength bolt group 19.

[0071] Similarly, the two U-shaped bending-shearing composite energy dissipation components each include a U-shaped connector 7 and an inner shear plate 9, the U-shaped opening of the U-shaped connector 7 faces the ground beam 20, the U-shaped connector 7 has left and right flanges and an arc-shaped web, the arc-shaped web can be designed as a C-shape or a semicircle, an inner shear plate 9 is arranged between the left and right flanges of the U-shaped connector 7, and the inner shear plate 9 is only welded to the left and right flanges of the U-shaped connector 7 on the left and right sides, and the upper and lower sides are not connected, that is, the lower side of the inner shear plate 9 is not connected to the ground beam 20, and the upper side is not connected to the arc-shaped web. In this way, when the column swings, it is easy to cause the left and right flanges of the U-shaped connector 7 to displace, drive the inner shear plate 9 to displace and deform, and dissipate shear energy.

[0072] The middle connecting member 8 is arranged between the left and right U-shaped bending-shear composite energy absorbing components, and is respectively welded and fixed to the two U-shaped bending-shear composite energy absorbing components. Bolt holes are correspondingly opened on the middle connecting member 8 and the ground beam 20. The middle connecting member 8 is connected to the ground beam 20 through a high-strength bolt group 19.

[0073] In one embodiment, the intermediate connecting member 8 is a channel steel connecting member, which is composed of upper and lower flanges and a web. The channel steel is open and faces away from the steel column 1, and the flange of the channel steel close to the ground beam 20 is provided with bolt holes, and the web of the channel steel is also provided with bolt holes. The upper flange of the ground beam 20 is provided with corresponding bolt holes, and the web of the steel column 1 is also provided with corresponding bolt holes. The intermediate connecting member 8 is connected and fixed to the upper flange of the ground beam 20 and the web of the steel column 1 through a high-strength bolt group 19. In this way, the two U-shaped bending-shear composite energy-absorbing components are connected and fixed to both the ground beam 20 and the steel column 1 through the channel steel.

[0074] The difference is that in the double insurance composite energy dissipation damping column foot node device, in order to ensure that the U-shaped bending shear composite energy dissipation component of the column foot node M-shaped bending shear composite energy dissipation damping device fully exerts its energy dissipation capacity, the left and right flanges of the U-shaped connector 7 are of unequal length, the flange close to the steel column 1 is shortened, and a pad strip is welded on the inner side of the flange of the steel column 1, and the pad strip is placed at the short flange of the U-shaped connector 7, so that the length of the short flange is flush with the long flange. By setting the pad strip, the pad strip can cooperate with the bolts to drive the short flange side of the U-shaped connector 7 to lift up with the steel column 1 when the column swings, and a displacement difference is generated with the long flange side of the U-shaped connector 7, so that the U-shaped bending shear composite energy dissipation component is deformed and the energy dissipation capacity of the U-shaped bending shear composite energy dissipation component is fully exerted.

[0075] In addition, if the column foot needs to be strengthened according to the actual situation, a triangular rib can be further arranged at the pad strip, and the two right-angled sides of the triangular rib are respectively welded to the pad strip and the bottom flange of the steel column.

[0076] In addition, the thickness of the flange on one side of the channel steel connector and bolt connection of the M-shaped composite energy dissipation damping beam-column node device and the double insurance composite energy dissipation damping column foot node device is thickened to ensure the connection strength here and prevent premature damage here, which affects the energy dissipation performance of the damping device. At the same time, it is convenient to fix one side of the long flange of the U-shaped connector 7 to ensure that it has a displacement difference with the short flange side, so that the inner shear plate can better dissipate energy.

[0077] Continue to see Figure 8-10 The utility model provides a better tension-shear composite energy dissipation damping device 12, including an L-shaped tension-compression energy dissipation plate 17 and a folded shear energy dissipation member 16, and two triangular ribs 18 are further provided according to whether to strengthen the actual engineering situation, wherein one L-shaped leg of the L-shaped tension-compression energy dissipation plate 17 is connected to the flange of the steel column 1 through a high-strength bolt group 19, and the other L-shaped leg is connected to the ground beam 20 through a high-strength bolt group 19; one folded end of the folded shear energy dissipation member 16 is fixed to one L-shaped leg of the L-shaped tension-compression energy dissipation plate 17, and the other folded end is fixed to the other L-shaped leg of the L-shaped tension-compression energy dissipation plate 17; the two triangular ribs 18 are respectively fixed to the corners of the L-shaped tension-compression energy dissipation plate 17 on both sides.

[0078] The L-shaped tension and compression energy absorbing plate 17 is easy to process and manufacture and to be installed and fixed at the flange of the steel column 1. It should be noted that the one limb of the L-shaped tension and compression energy absorbing plate 17 connected to the flange of the steel column 1 is a long flange plate, and the one limb connected to the flange of the ground beam 20 is a short flange plate. One end of the folded shear energy absorbing member 16 is welded and fixed to the long flange plate of the L-shaped tension and compression energy absorbing plate 17, and the other end is welded and fixed to the short flange plate of the L-shaped tension and compression energy absorbing plate 17.

[0079] Preferably, the L-shaped tension and compression energy-absorbing plate 17 is connected to the flange of the steel column 1 by a dog-bone weakening notch on both sides (i.e., the long flange plate), forming an I-shaped plate. The length of the weakened part is adjusted according to the actual project. The middle of the I-shaped plate is slotted at equal intervals, for example, two, three or even four vertical strip grooves are opened at equal intervals. The bottom position of the strip groove is flush or roughly flush with the upper flange position of the channel steel connector. The length of the slot is adjusted according to the actual project. Bolt holes are opened at the upper and lower parts of the I-shaped plate, which are connected to the flange of the steel column 1 through a high-strength bolt group 19. Bolt holes are also opened at the other limb of the L-shape, which is connected to the upper flange of the ground beam 20 through a high-strength bolt group 19. By weakening and slotting, the location where plastic deformation occurs can be controlled or transferred, so that plastic deformation occurs at a relatively weak position in the plate, and the energy dissipation capacity of the plate can be better exerted.

[0080] Preferably, based on the seismic design concept of strong columns and weak beams, the high-strength bolt group 19 of the other L-shaped limb of the L-shaped tension and compression energy absorption plate 17 can be equipped with a disc spring 22, that is, the high-strength bolt group 19 connected to the ground beam 20 is equipped with a disc spring 22. Such a design can not only enable the disc spring to share part of the tension on the bolt when the bolt is pulled, thereby avoiding premature damage to the bolt, but also provide better restoring force for the self-resetting device in the self-resetting column foot node.

[0081] Under the action of small and medium earthquakes, the double insurance composite energy dissipation and damping column foot node device is in an elastic state; under the action of large and super large earthquakes, the M-shaped bending-shear composite energy dissipation and damping device and the tension-shear composite energy dissipation and damping device at the column foot node both participate in energy dissipation. With the increase of earthquake action, one side of the column foot rises, the folded shear energy dissipation part in the tension-shear composite energy dissipation and damping device dissipates energy by shear, and the L-shaped tension-compression energy dissipation plate dissipates part of the energy under tension and compression. The M-shaped bending-shear composite energy dissipation and damping device at the column foot node dissipates energy by bending-shear composite energy dissipation, and the left and right flanges of the U-shaped bending-shear composite energy dissipation component dissipate energy by bending and dissipating each other, driving the built-in inner shear plate to dissipate energy by shear, forming a double insurance energy dissipation mechanism. The two dampers that dissipate energy through different force mechanisms can effectively ensure the shortcomings of overall structural failure caused by the failure of a single damper, making the overall structure safe. After energy dissipation, the residual deformation of the node is reduced by the self-resetting device. If the energy dissipation component undergoes irreversible plastic deformation, the energy dissipation function can be restored by removing the bolts and replacing the energy dissipation component.

[0082] In one embodiment, Fig.12 As shown, the folded shear energy dissipation member 16 is τ-shaped, and the τ-shaped folded shear energy dissipation member 16 and the L-shaped tension and compression energy dissipation plate 17 form a U-shaped tension-shear composite energy dissipation damping device 12. The τ-shaped folded shear energy dissipation member 16 includes two I-shaped shear plates, four ribs and an H-shaped connecting plate. The two I-shaped shear plates are arranged vertically and parallel to each other, and the four ribs are symmetrically welded to the front and rear sides of the webs of the two I-shaped shear plates at equal intervals, connecting and fixing the two I-shaped shear plates to form a lattice section; an H-shaped connecting plate is welded and fixed to the upper ends of the two I-shaped shear plates, and is also welded and fixed to one end of the L-shaped tension and compression energy dissipation plate 17, and the lower ends of the two I-shaped shear plates are welded and fixed to the other end of the L-shaped tension and compression energy dissipation plate 17. Of course, the number of I-shaped shear plates and ribs can be flexibly set according to actual conditions.

[0083] In another embodiment, Fig.13As shown, the folding shear energy dissipation member 16 is F-shaped, and the F-shaped folding shear energy dissipation member 16 and the L-shaped tension and compression energy dissipation plate 17 constitute a Japanese-shaped tension-shear composite energy dissipation damping device 12. The F-shaped folding shear energy dissipation member 16 includes two F-shaped shear plates and six ribs, the two F-shaped shear plates are arranged vertically and parallelly, two pairs of four ribs are welded at equal intervals on the front and rear sides of the webs of the two F-shaped shear plates, and one rib is symmetrically welded on the upper and lower sides of the flanges to form a lattice section, one end of the flange of the F-shaped shear plate is welded and fixed to one end of the L-shaped tension and compression energy dissipation plate 17, and one end of the web is welded and fixed to the other end of the L-shaped tension and compression energy dissipation plate 17. Of course, the number of F-shaped shear plates and ribs can be flexibly set according to actual conditions.

[0084] See also Figure 4-6 The composite energy dissipation and damping beam-column node device also includes two weakened cover plates 6, and dog-bone weakened notches are provided on both longitudinal sides of the two weakened cover plates 6. The two weakened cover plates 6 are respectively arranged at the joints of the upper and lower flanges of the cantilever beam 2 and the steel beam 3, and are connected and fixed to the upper and lower flanges of the cantilever beam 2 and the steel beam 3 by a group of high-strength bolts 19, thereby strengthening the connection strength at the joints of the cantilever beam 2 and the steel beam 3.

[0085] like Fig.14 , showing a floor schematic diagram of an assembled steel structure system with an embedded easily replaceable composite energy-absorbing and damping device. The M-shaped composite energy-absorbing and damping beam-column node devices are symmetrically arranged at both ends of the same frame beam and can be arranged in multiple layers in the frame system; the double-insurance composite energy-absorbing and damping column foot node devices are only located at the bottom of the first-floor columns of the frame system; the construction measures and implementation methods of the structural system comprehensively and systematically improve the bearing capacity of the steel frame system and have good assemblability.

[0086] When the M-shaped composite energy dissipation and damping beam-column node device and the M-shaped bending-shear composite energy dissipation and damping device of the double-insurance composite energy dissipation and damping column foot node device undergo irreversible plastic deformation after an earthquake, after removing the connecting bolts, since the M-shaped bending-shear composite energy dissipation and damping device is embedded in the inner side of the prestressed cable, it should be rotated 90° and removed from between the prestressed cables. The total height of the M-shaped bending-shear composite energy dissipation and damping device should be less than the clear distance between the prestressed steel strands to facilitate the replacement of the M-shaped bending-shear composite energy dissipation and damping device. By using easily replaceable energy dissipation components and self-resetting devices to achieve the concept of restorable functional development, the earthquake resistance effect is good and it is widely used in light industrial plants, high-rise building systems, etc.

[0087] The frame system can be combined with detachable and replaceable shear walls, energy-absorbing supports, etc. to form a frame-shear wall system and a frame-support system, which can be flexibly applied to multi-story and high-rise building systems. Fig.15 A floor schematic diagram of a prefabricated steel structure-shear wall system with an embedded composite energy dissipation damping device is shown. Fig.16A floor schematic diagram of an assembled steel structure-energy dissipation support system with an embedded composite energy dissipation damping device is shown. The multi-layer frame system is combined with a detachable and replaceable shear wall 23 to form a multi-layer frame-shear wall system, and is combined with an energy dissipation support 24 to form an equal multi-layer frame-support system, wherein the energy dissipation support is arranged in a single-span V-shape on the first floor, and a single oblique span arrangement is used on the second floor and above.

[0088] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

[0089] Although several specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present invention. Certain features described in the context of a separate embodiment may also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation may also be implemented in multiple implementations individually or in any suitable sub-combination.

Claims

1. An assembled steel structure system with an easily replaceable composite energy dissipation damping device embedded therein, characterized in that: include: Steel columns with cantilever beams on them, both of which are I- / H-shaped; The steel beam, whose ends are butted against the cantilever beams on the steel columns on both sides, is also I-shaped / H-shaped; The composite energy dissipation and damping beam-column node device is used to connect the steel beam and the cantilever beams on the steel columns on both sides, including: Two sets of beam-column node bending-shear composite energy dissipation damping devices are connected to the two sides of the web plate oppositely at the ends of the steel beam by bolts, and are also connected to the cantilever beam by bolts; The double insurance composite energy dissipation and damping column foot node device is used to connect the steel column and the ground beam, including: Two sets of column foot node bending-shear composite energy dissipation damping devices are connected to opposite sides of the web of the steel column at the column foot by bolts, and are connected to the ground beam by bolts at the same time; Two sets of tension-shear composite energy dissipation damping devices are connected to the two flanges of the steel column oppositely at the column foot by bolts, and are connected to the ground beam by bolts at the same time.

2. The assembled steel structure system according to claim 1, characterized in that: The beam-column node bending-shear composite energy dissipation damping device is M-shaped and includes: Two U-shaped bending-shear composite energy absorbing components are arranged in parallel and transversely in an M shape between the upper and lower flanges of the steel beam, and the upper flange of the upper U-shaped bending-shear composite energy absorbing component and the lower flange of the lower U-shaped bending-shear composite energy absorbing component are both provided with bolt holes, and the upper and lower flanges of the steel beam are correspondingly provided with bolt holes, and the two U-shaped bending-shear composite energy absorbing components are connected to the upper and lower flanges of the steel beam through a high-strength bolt group; The intermediate connecting member is arranged between the upper and lower U-shaped bending-shear composite energy absorbing components, and is respectively connected and fixed to the two U-shaped bending-shear composite energy absorbing components, and the intermediate connecting member is connected to the steel beam and the cantilever beam through a high-strength bolt group.

3. The assembled steel structure system according to claim 2, characterized in that: The U-shaped bending and shearing composite energy dissipation component comprises: A U-shaped connector consisting of upper and lower flanges and a curved web; An inner shear plate is disposed between the upper and lower flanges of the U-shaped connector, and only the upper and lower sides of the inner shear plate are welded to the upper and lower flanges of the U-shaped connector; And / or, the intermediate connecting member is a channel steel connecting member, which is composed of left and right flanges and a web. The web of the channel steel connecting member and the flange close to the cantilever beam are provided with bolt holes, and the web of the steel beam is provided with corresponding bolt holes. The end of the cantilever beam is provided with an end plate, and the end plate is also provided with corresponding bolt holes. The channel steel connecting member is connected to the steel beam and the end plate through a group of high-strength bolts.

4. The assembled steel structure system according to claim 1, characterized in that: The column foot node bending-shear composite energy dissipation damping device is M-shaped and includes: Two U-shaped bending-shear composite energy-absorbing components are arranged vertically and in parallel between the left and right flanges of the steel column in an M shape, and the left flange of the left U-shaped bending-shear composite energy-absorbing component and the right flange of the right U-shaped bending-shear composite energy-absorbing component are both provided with bolt holes, and the left and right flanges of the steel column are correspondingly provided with bolt holes, and the two U-shaped bending-shear composite energy-absorbing components are connected to the left and right flanges of the steel column through a high-strength bolt group; The middle connecting member is arranged between the left and right U-shaped bending-shear composite energy absorbing components, and is respectively connected and fixed to the two U-shaped bending-shear composite energy absorbing components, and the middle connecting member is connected to the steel column and the ground beam through a high-strength bolt group.

5. The assembled steel structure system according to claim 4, characterized in that: The U-shaped bending and shearing composite energy dissipation component comprises: A U-shaped connector, consisting of left and right flanges and a curved web; An inner shear plate is disposed between the left and right flanges of the U-shaped connector, and only the left and right sides of the inner shear plate are welded to the left and right flanges of the U-shaped connector; And / or, the intermediate connecting member is a channel steel connecting member, which is composed of upper and lower flanges and a web. The web of the channel steel connecting member and the flange close to the ground beam are both provided with bolt holes, the web of the steel column is provided with corresponding bolt holes, and the upper flange of the ground beam is also provided with corresponding bolt holes. The channel steel connecting member is connected to the steel column and the ground beam through a group of high-strength bolts.

6. The assembled steel structure system according to claim 5, characterized in that: The left and right flanges of the U-shaped connector are of unequal lengths, the flange close to the steel column flange is shortened, and a pad strip is welded at the shortened flange of the U-shaped connector on the inner side of the steel column flange, so that the left and right flanges are flush in length.

7. The assembled steel structure system according to claim 1, characterized in that: The tension-shear composite energy dissipation damping device comprises: An L-shaped tension and compression energy dissipation plate, one leg of the L-shape is connected to the steel column through a high-strength bolt group, and the other leg of the L-shape is connected to the ground beam through a high-strength bolt group; A folded shear energy absorbing member, one folded end of which is fixed to one L-shaped limb of the L-shaped tensile and compressive energy absorbing plate, and the other folded end of which is fixed to the other L-shaped limb of the L-shaped tensile and compressive energy absorbing plate.

8. The assembled steel structure system according to claim 7, characterized in that: The folding shear energy dissipating member is τ-shaped and comprises: Two I-shaped shear plates are arranged vertically and parallel to each other; A plurality of ribs are symmetrically welded in pairs at equal intervals to the front and rear sides of the webs of the two I-shaped shear plates; An H-shaped connecting plate is welded and fixed to the upper ends of the two I-shaped shear plates and is also welded and fixed to one limb of the L-shaped tensile and compressive energy absorbing plate, and the lower ends of the two I-shaped shear plates are welded and fixed to the other limb of the L-shaped tensile and compressive energy absorbing plate; or The folding shear energy dissipating member is F-shaped and includes: Two F-shaped shear plates, arranged vertically and parallel to each other; A plurality of ribs are symmetrically welded in pairs at equal intervals to the front and rear sides of the webs of the two F-shaped shear plates, and to the upper and lower sides of the flanges of the two F-shaped shear plates; and One end of the flanges of the two F-shaped shear plates is welded and fixed to one limb of the L-shaped tensile and compressive energy absorbing plate, and one end of the web is welded and fixed to the other limb of the L-shaped tensile and compressive energy absorbing plate.

9. The assembled steel structure system according to claim 1, characterized in that: The composite energy dissipation and damping beam-column node device also includes: Two sets of beam-column node self-resetting devices include prestressed cables and prestressed tooling, wherein the prestressed tooling is oppositely fixed on both sides of the cantilever beam web, and both ends of the prestressed cables are anchored to the prestressed tooling on the cantilever beams on both sides.

10. The assembled steel structure system according to claim 1, characterized in that: The double insurance composite energy dissipation damping column foot node device also includes: Two sets of column foot node self-resetting devices each include a prestressed cable and a prestressed tooling, one set of the prestressed tooling is oppositely fixed to the two sides of the web of the ground beam, and the other set is oppositely fixed to the two sides of the web of the steel column at a predetermined height, and both ends of the prestressed cable are anchored to the two sets of prestressed tooling.

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