CN118087739A - High-toughness assembled steel structure system with embedded high-performance hierarchical energy dissipation damping device easy to replace - Google Patents
High-toughness assembled steel structure system with embedded high-performance hierarchical energy dissipation damping device easy to replace Download PDFInfo
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- 238000013016 damping Methods 0.000 title claims abstract description 85
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- 238000005265 energy consumption Methods 0.000 claims abstract description 101
- 239000002131 composite material Substances 0.000 claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000010008 shearing Methods 0.000 claims description 49
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- 238000007906 compression Methods 0.000 claims description 25
- 230000003313 weakening effect Effects 0.000 claims description 22
- 210000000988 bone and bone Anatomy 0.000 claims description 21
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 1
- 238000009432 framing Methods 0.000 claims 1
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- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
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- 150000001875 compounds Chemical class 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
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- 239000002356 single layer Substances 0.000 description 2
- 210000001226 toe joint Anatomy 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
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Abstract
The invention provides a high-toughness assembled steel structure system embedded with a high-performance hierarchical energy-consumption damping device easy to replace, which comprises: the steel column is provided with cantilever beams, and the cantilever beams are I/H-shaped; the two ends of the steel beam are butted with cantilever beams on the steel columns at the two sides and are I-shaped/H-shaped; the double-fusing safety mechanism energy-consumption beam column joint device is used for connecting a cantilever beam and a steel beam on a steel column; the double-insurance composite energy-consumption damping column foot node device is used for connecting a steel column and a ground beam. In the steel structure system, two sides of each layer of frame beam are symmetrically provided with the energy-consumption beam column node devices of the double-fusing safety mechanism, and only one layer of column feet of the frame are provided with the double-safety composite energy-consumption damping column foot node devices. Based on the earthquake-resistant design concept of strong column and weak beam, the bearing capacity of the steel frame system is comprehensively and systematically improved, the steel frame system is easy to replace after earthquake, and beam column and column foot nodes consume energy in stages to realize the energy consumption function under small-super large earthquake, so that the steel frame system is widely applied to light industrial plants, high-rise building systems and the like.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a prefabricated assembly type structure, and in particular relates to a high-toughness assembly type steel structure system with an embedded high-performance hierarchical energy consumption damping device easy to replace.
Background
The restorable function assembled steel structure building is a novel assembled steel structure building system. The design is based on plastic damage control and recoverable function anti-seismic concept, and on the premise of life protection, the main body member which is not suitable for replacement in the structure is undamaged, plastic damage only occurs on the low-cost member which is easy to replace, the post-earthquake structure can continue to have enough bearing capacity, and the repaired structure can also continue to maintain the anti-seismic performance of the original structure. Therefore, on the premise of ensuring bearing capacity, the restorable function assembled steel structure system is researched and developed based on the anti-seismic performance, and has great practical value and economic value. Under the action of earthquake load, the column foot node and the beam column node of the traditional steel frame structure are extremely easy to generate plastic damage, the problem that the beam column node is difficult to repair and replace after earthquake exists, the assembled steel frame with part of replaceable node energy consumption elements generally enters a plastic stage to consume energy under a large earthquake, and most of the assembled steel frame is in an elastic stage under a small earthquake, and the assembled steel frame can only depend on a main structure to resist the earthquake, so that the main structure is adversely affected, and the system which has high bearing capacity and is easy to replace energy consumption components after earthquake to realize a recoverable function and realize the small-to-oversized earthquake energy consumption function through staged energy consumption is a problem to be solved.
Disclosure of Invention
In view of the defects of the prior art, the invention provides a high-toughness assembled steel structure system with an embedded high-performance hierarchical energy dissipation damping device which is easy to replace, and aims to solve the problems of the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The invention firstly provides a high-toughness assembled steel structure system embedded with a high-performance hierarchical energy-consumption damping device which is easy to replace, comprising: the steel column is provided with cantilever beams, and the cantilever beams are I/H-shaped; the two ends of the steel beam are butted with cantilever beams on the steel columns at the two sides and are I-shaped/H-shaped; the utility model provides a dual fusing insurance mechanism power consumption beam column node means for connect girder steel and the cantilever beam on the steel column of both sides, include: the two sets of chain rod type buckling restrained composite energy dissipation devices are oppositely connected to two sides of the web plate at the joint of the cantilever beam and the steel beam through bolts; the double insurance composite energy consumption damping column foot node device is used for connecting a steel column and a ground beam, and comprises: two sets of bending shear composite energy consumption damping devices are oppositely connected to two sides of a web plate of the steel column at column feet through bolts and are connected with the ground beam through bolts; the two sets of pull-shear composite energy-consumption damping devices are oppositely connected to the two flanges of the steel column through bolts at column feet and are connected with the ground beam through bolts.
The invention further provides the use of the steel structure system according to the invention in a multi-story, high-rise frame system, a frame-shear wall system or a frame-support system.
Compared with the prior art, the invention has the beneficial effects that:
(1) The double-fusing safety mechanism energy-consumption beam column node device is a grading energy-consumption device, under the action of small and medium vibration, the dog bone weakened flange cover plate with the ear plate at the pressure side generates buckling deformation energy consumption, the plate bulges upwards and does not or slightly abuts against the pin roll shear-resistant damping chain rod, and the double-fusing safety mechanism energy-consumption beam column node device is a first energy-consumption stage. Under the action of large and ultra-large vibration, the dog bone weakening type flange cover plate with the lug plate at the pressure side is upwards bulged to be propped against the pin roll shear damping chain rod, the interaction force exceeds the bearing capacity of the pin roll shear damping chain rod, the pin roll shear damping chain rod is broken, the crescent lug plate of the web plate is propped against the dog bone weakening type flange cover plate with the lug plate at the pressure side, and the dog bone weakening type flange cover plate can be continuously used as a buckling-restrained member and is used in the second energy dissipation stage. After the earthquake action is finished, the grading energy consumption function can be recovered by disassembling the bolts and replacing the energy consumption components.
(2) The high-toughness assembled steel structure system embedded with the easily-replaced high-performance hierarchical energy-consumption damping device is based on the earthquake-resistant design requirement of the strong column and the weak beam, and the double-insurance composite energy-consumption damping column foot node device capable of recovering functions is in an elastic state under the action of small and medium earthquakes; under the action of large and ultra-large earthquake, the bending shear composite energy-consumption damping device and the pulling shear composite energy-consumption damping device are all involved in energy consumption, along with the increase of the earthquake action, the tau-shaped (or F-shaped) connecting device in the pulling shear composite energy-consumption damping device shears energy consumption, the L-shaped pulling pressure energy-consumption plate dissipates part of energy under the pulling pressure action, the left flange and the right flange of the U-shaped bending shear composite energy-consumption assembly are staggered to bend and consume energy, the inner shear plate is driven to shear energy consumption, and a bending shear composite energy-consumption mechanism is formed. After the earthquake action is finished, the energy consumption function can be recovered by disassembling the bolts and replacing the energy consumption components.
(3) Based on the earthquake-resistant design concept of strong column and weak beam, under the action of small and medium earthquake, the beam column node keeps elasticity or enters a first energy consumption stage, the column foot node keeps elasticity, under the action of large earthquake and ultra-large earthquake, the beam column node enters a second energy consumption stage, and the column foot node is subjected to tension, compression, bending and shearing composite energy consumption.
(4) In the bending and shearing composite energy consumption damping device, in order to ensure that the U-shaped bending and shearing composite energy consumption assembly fully plays the energy consumption capacity, the left flange and the right flange of the U-shaped connecting piece are not equal in length, a cushion strip is welded at the bottom flange of the steel column, and the cushion strip is connected with the short flange of the U-shaped connecting piece, so that the length of the short flange is flush with the length of the long flange; the thickness of the flange at one side of the channel steel connecting piece and the bolt connection is thickened, one side of the long flange of the U-shaped connecting piece is convenient to fix, displacement difference is generated between the U-shaped connecting piece and one side of the short flange, and energy consumption of the inner shearing plate is better achieved.
(5) The components of the node device are all processed by factories, and are all connected and installed by high-strength bolts on site, so that the node device has good assemblability.
(6) The invention can be applied to single-layer, and can be combined with a detachable and replaceable shear wall, an energy consumption support and the like to form a frame-shear wall system and a frame-support system, so that the invention can be flexibly applied to multi-story and high-rise building systems.
It should be understood that the implementation of any of the embodiments of the invention is not intended to simultaneously possess or achieve some or all of the above-described benefits.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the claims.
FIG. 1 is a three-dimensional view of a high-toughness fabricated steel structural system with an easily replaceable high-performance hierarchical energy-consuming damping device embedded therein.
FIG. 2 is a front view of a high toughness fabricated steel structural system with an easily replaceable high performance hierarchical energy consuming damping device embedded therein.
FIG. 3 is a split view of a high toughness fabricated steel structural system with an easily replaceable high performance hierarchical energy consuming damping device embedded therein.
FIG. 4 is a three-dimensional view of a beam-column joint of a high-toughness fabricated steel structure system with an easily replaceable high-performance hierarchical energy-consuming damping device embedded therein.
FIG. 5 is a front view of a beam-column joint of a high-toughness fabricated steel structural system with an easily replaceable high-performance hierarchical energy-dissipating damping device embedded therein.
FIG. 6 is a beam-column joint split diagram of a high-toughness fabricated steel structural system with an easily replaceable high-performance hierarchical energy-consuming damping device embedded therein.
FIG. 7 is a block diagram of a beam-column joint composite dissipative damping device of a high-toughness fabricated steel structural system with an embedded easily replaceable high-performance hierarchical dissipative damping device.
FIG. 8 is a three-dimensional view of a toe joint of a high-toughness fabricated steel structural system with an easily replaceable high-performance hierarchical energy-dissipating damping device embedded therein.
FIG. 9 is a front view of a toe joint of a high-toughness fabricated steel structural system with an easily replaceable high-performance, stepped energy-dissipating damping device embedded therein.
FIG. 10 is a column shoe node split diagram of a high-toughness fabricated steel structural system with an embedded easy-to-replace high-performance hierarchical energy-dissipating damping device.
FIG. 11 is a block diagram of a bend-shear composite energy dissipation damper of a high-toughness fabricated steel structural system with an embedded easy-to-replace high-performance hierarchical energy dissipation damper.
FIG. 12 is a diagram of a folded shear energy consuming member structure (F-shape) of a high-toughness fabricated steel structural system with an easily replaceable high-performance hierarchical energy consuming damping device embedded therein.
FIG. 13 is a diagram of a folded shear energy consuming member structure (τ -shaped) of a high toughness fabricated steel structure system with an easily replaceable high performance hierarchical energy consuming damping device embedded therein.
FIG. 14 is a schematic floor view of a high-toughness fabricated steel structural system with an easily replaceable high-performance stepped energy dissipation damper embedded therein.
FIG. 15 is a schematic floor view of a high-toughness fabricated steel structure-shear wall system with an easily replaceable high-performance stepped energy-dissipating damping device embedded therein.
FIG. 16 is a schematic floor view of a high-toughness fabricated steel structure-dissipative brace system with an embedded easy-to-replace high-performance stepped dissipative damping device.
The marks in the figure:
100-embedding a high-toughness assembled steel structure system of a high-performance hierarchical energy-consumption damping device which is easy to replace;
1-a steel column; 2-cantilever beams; 3-steel beams; 4-a pin roll shear damping chain rod; 5-web connection plate with crescent ear plate; 6-a dog bone weakening type flange cover plate with an ear plate; 7-U-shaped connectors; 8-an intermediate connection; 9-an inner shear plate; 10-steel column web stiffening plates; 11-bending and shearing composite energy-consumption damping device; 12-pulling and shearing composite energy consumption damping device; 13-L-shaped pulling and pressing energy consumption plates; 14-folding shear energy consuming parts; 15-triangular rib plates; 16-ear plate; 17-crescent ear plates; 18-a weakening zone; 19-high-strength bolt groups; 20-a ground beam; 21-a shear wall; 22-energy consuming struts;
Like or corresponding reference characters indicate like or corresponding parts throughout the several views.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the embodiments and the accompanying drawings. The exemplary embodiments of the present invention and their descriptions herein are for the purpose of explaining the present invention, but are not to be construed as limiting the invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method as desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …" does not exclude that an additional identical element is present in a product, apparatus, process or method comprising the element.
It is further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate describing the present invention and to simplify the description, and do not indicate or imply that the devices, components, or structures referred to must have a particular orientation, be configured or operated in a particular orientation, and are not to be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 1 to 3, the high-toughness assembled steel structure system 100 with the embedded easy-to-replace high-performance hierarchical energy dissipation damping device provided by the invention mainly comprises: the device comprises a steel column, a steel beam, a double-fusing safety mechanism energy-consuming beam column node device, a double-fusing composite energy-consuming damping column foot node device and a high-strength bolt group.
Specifically, the steel column 1 is provided with the cantilever beam 2, the length of the cantilever beam 2 is determined according to stress analysis and design, the cantilever beams 2 on the steel columns 1 on two sides are in butt joint connection with the two ends of the steel beam 3, and the steel beam 3 is prevented from being directly connected with the steel column 1, so that the stress at the beam column joint is more reasonable. The cantilever beam 2 is connected with the steel beam 3 through a double-fusing safety mechanism energy-dissipation beam column node device, and the bottom of the steel column 1 is connected with the ground beam 20 through a double-fusing composite energy-dissipation damping column foot node device with a recoverable function, so that a high-toughness assembled steel structure system with an embedded high-performance hierarchical energy-dissipation damping device easy to replace is formed.
In the invention, the steel column 1, the cantilever beam 2 and the steel beam 3 all adopt I/H-shaped section forms so as to facilitate the arrangement of the double-fusing safety mechanism energy-consumption beam column node device and the double-fusing composite energy-consumption damping column foot node device.
The two sides of the web of the steel column 1 and the upper and lower flanges of the cantilever beam 2 are correspondingly provided with steel column web stiffening plates 10, and the upper and lower flanges of the cantilever beam 2 flush with the two steel column web stiffening plates 10 are welded with the web of the steel column 1 and the left and right flanges so as to strengthen the parts, close to the end parts of the column, of the upper and lower flanges of the cantilever beam 2.
Referring to fig. 4, the dual-fusing safety mechanism energy-dissipating beam column node device is used for connecting a cantilever beam 2 and a steel beam 3 on a steel column 1, and comprises two sets of chain rod type buckling restrained composite energy-dissipating devices 8, and the butt joint of the cantilever beam 2 and the steel beam 3 is oppositely connected to two sides of a web through bolts. It is easy to understand that the two sets of chain rod type buckling restrained composite energy dissipation devices 8 provide buckling restrained and energy dissipation, are mainly considered to be buckling restrained components, have damping energy dissipation effects simultaneously, are used for grading energy dissipation under the earthquake effect, and can restore the grading energy dissipation function by disassembling bolts and replacing energy dissipation components after the earthquake effect is finished. The specific energy dissipation mechanism will be described in detail later in connection with the specific structure.
Referring to fig. 5 and 6, bolt holes are correspondingly formed in the two sets of chain rod type buckling restrained composite energy dissipation devices 8, the cantilever beam 2, the web plate and the upper flange and the lower flange of the steel beam 3, the two sets of chain rod type buckling restrained composite energy dissipation devices 8 are oppositely connected to two sides of the web plate through high-strength bolt groups 19 at the butt joint position of the cantilever beam 2 and the steel beam 3, and the two sets of chain rod type buckling restrained composite energy dissipation devices 8 are symmetrically arranged on two sides of the web plate, so that the connection and fixation of the steel beam 3 and the cantilever beam 2 are realized by means of the two sets of chain rod type buckling restrained composite energy dissipation devices 8.
In one particular embodiment, the link buckling restrained composite energy dissipation device 8 comprises: the two dog bone weakening type flange cover plates 6 with the lug plates, the two web plate connecting plates 5 with the crescent lug plates, the two pin shaft shearing resistance damping chain rods 4 and the high-strength bolt group 19.
Specifically, referring to fig. 7, two sides of the middle section of the dog bone weakened type flange cover plate 6 with the ear plates are provided with notch weakened to form weakened areas 18, and a plurality of ear plates 16 are distributed at equal intervals in the weakened areas 18, so that the number of the ear plates 16, for example, two, three or more, can be flexibly designed under the condition that the dog bone weakened type flange cover plate can play a role in due buckling constraint, and three are preferred in the embodiment. The otic placode trompil is the round hole, weakens a plurality of bolt holes in advance at district 18 both ends, and a plurality of bolt holes are the style of calligraphy and arrange, and the upper and lower edge of a wing of cantilever beam 2 and girder steel 3 butt joint department has seted up the bolt hole correspondingly, and two dog bone that take the otic placode weakens edge of a wing apron 6 are connected respectively through high strength bolt crowd 19 in the upper and lower edge of a wing inboard of cantilever beam 2 and girder steel 3 butt joint department.
The web connecting plate 5 with the crescent ear plate is correspondingly matched with the dog bone weakening flange cover plate 6 with the ear plate, a plurality of crescent ear plates 17 are distributed on the web connecting plate at equal intervals, and the number of the crescent ear plates 17, such as two, three or more, can be flexibly designed under the condition of ensuring that the dog bone weakening flange cover plate can play a role in due buckling constraint, and of course, the number of the crescent ear plates is consistent with that of the ear plates 16, and three are preferred in the embodiment. The trompil of crescent otic placode is the slotted hole to take the web connecting plate 5 of crescent otic placode to the bolt hole has been seted up correspondingly on the web of cantilever beam 2 and girder steel 3 butt joint department, and the web connecting plate 5 of taking crescent otic placode respectively arranges one in the upside and the downside of cantilever beam 2 and girder steel 3 butt joint department web, and crescent otic placode 17 orientation is corresponding otic placode 16, connects on the web of cantilever beam 2 and girder steel 3 butt joint department through high strength bolt crowd 19.
As described above, the crescent ear plate 17 of the web plate connecting plate 5 with crescent ear plate faces the ear plate 16 on the corresponding dog bone weakened type flange cover plate 6 with ear plate, the three groups of ear plates are in one-to-one correspondence, and one pin roll shear damping chain rod 4 passes through the oblong hole and the round hole to connect the dog bone weakened type flange cover plate 6 with ear plate and the web plate connecting plate 5 with crescent ear plate.
The crescent lug plate is used as a connecting chain rod, and the crescent lug plate is abutted against the dog bone weakening type flange cover plate to provide buckling constraint when the chain rod is broken in the later stage. The crescent shape is only for convenience of description, and the crescent shape is a preferred form and can also be a similar long triangle hole plate.
According to the double-fusing safety mechanism energy-consumption beam column node device provided by the invention, under the action of an earthquake, the beam column node is deformed, and during small and medium earthquake, the dog-bone weakened flange cover plate 6 with the lug plate at the pressure side is subjected to buckling deformation energy consumption, and the cover plate is upwards bulged and is not propped or slightly propped against the pin roll shear damping chain rod 4, so that the energy consumption stage is a first energy consumption stage; when the shock absorber is large and ultra-large, the dog bone weakening type flange cover plate 6 with the lug plate at the pressure side continuously bulges upwards to prop against the pin roll shear damping chain rod 4, the interaction force exceeds the bearing capacity of the pin roll shear damping chain rod 4, the pin roll shear damping chain rod 4 is broken, the crescent lug plate with the web plate connecting plate 5 of the crescent lug plate props against the dog bone weakening type flange cover plate 6 with the lug plate at the pressure side, and the dog bone weakening type flange cover plate can be continuously used as a buckling-restrained member and is used in the second energy consumption stage.
In the double-fusing safety mechanism energy dissipation beam column node device, a gap is reserved at the butt joint position of the steel beam 3 and the cantilever beam 2, so that deformation energy dissipation at the node position is facilitated, the node position is also equivalent to small weakening, the plastic damage position is conveniently controlled, and meanwhile, local compressive stress is avoided when the steel beam 3 and the cantilever beam 2 relatively rotate, and a structural main body is injured.
As shown in fig. 1-3 and fig. 8-10, the dual-safety composite energy-consumption damping column foot node device capable of recovering functions is used for connecting the steel column 1 and the ground beam 20 and comprises two sets of bending shear composite energy-consumption damping devices 11 and two sets of stretching shear composite energy-consumption damping devices 12. It is easy to understand that the two sets of bending shear composite energy consumption damping devices 11 are used for participating in bending shear energy consumption under the action of an earthquake, and the two sets of tension shear composite energy consumption damping devices 12 are also used for participating in tension compression-shear energy consumption under the action of the earthquake, so that a double-insurance energy consumption mechanism is formed. The specific energy dissipation mechanism will be described in detail later in connection with the specific structure.
With continued reference to fig. 8-10, bolt holes are correspondingly formed in the bending and shearing composite energy dissipation damping devices 11 and the web plate and the left flange and the right flange of the steel column 1, the two sets of bending and shearing composite energy dissipation damping devices 11 are oppositely connected to two sides of the web plate of the steel column 1 at column feet through high-strength bolt groups 19, are symmetrically arranged on two sides of the web plate and are simultaneously connected with the ground beam 20 through the high-strength bolt groups 19, and are fixedly connected with the ground beam 20 from two sides of the web plate of the steel column 1 through the bending and shearing composite energy dissipation damping devices 11.
The two sets of pull-shear composite energy dissipation damping devices 12 are oppositely connected to the two flanges of the steel column 1 at column feet through high-strength bolt groups 19, are particularly symmetrically arranged on the outer sides of the flanges, and are simultaneously connected with the ground beam 20 through the high-strength bolt groups 19, so that the two sets of pull-shear composite energy dissipation damping devices 12 are fixedly connected with the ground beam 20 from the two sides of the flanges of the steel column 1.
Referring to fig. 11 again, the present invention provides a preferred bending and shearing composite energy dissipation damping device 11, which is an M-shaped composite energy dissipation damping device, and includes two U-shaped bending and shearing composite energy dissipation components and an intermediate connecting piece 8, wherein the two U-shaped bending and shearing composite energy dissipation components have the same structure, are vertically and symmetrically arranged in parallel in a M-shape between the left flange and the right flange of the steel column 1, and the intermediate connecting piece 8 connects the left and the right U-shaped bending and shearing composite energy dissipation components to form a whole.
Specifically, bolt holes are formed in the left flange of the left U-shaped bending shear composite energy consumption component and in the right flange of the right U-shaped bending shear composite energy consumption component, bolt holes are correspondingly formed in the left flange and the right flange of the steel column 1, and the two U-shaped bending shear composite energy consumption components are connected with the left flange and the right flange of the steel column 1 through high-strength bolt groups 19.
In one embodiment, the two U-shaped bending shear composite energy dissipation assemblies each include a U-shaped connector 7 and an inner shear plate 9,U, 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 web, the arc web can be designed into a C-shape and a semicircle, an inner shear plate 9 is disposed between the left and right flanges of the U-shaped connector 7, and only the left and right sides of the inner shear plate 9 are welded with the left and right flanges of the U-shaped connector 7, the upper and lower sides are not connected, that is, the lower side of the inner shear plate 9 is not connected with the ground beam 20, and the upper side is not connected with the arc web. Therefore, when the column swings, the left flange and the right flange of the U-shaped connecting piece 7 are easy to move, the inner shearing plate 9 is driven to move and deform, and shearing energy is consumed.
In one embodiment, the middle connecting piece 8 is a channel steel connecting piece and is composed of an upper flange, a lower flange and a web plate, the channel steel is open and deviates from the steel column 1, the flange of the channel steel, which is close to one side of the ground beam 20, is provided with a bolt hole, the web plate of the channel steel is also provided with a bolt hole, the upper flange of the ground beam 20 is correspondingly provided with a bolt hole, the web plate of the steel column 1 is correspondingly provided with a bolt hole, the middle connecting piece 8 is fixedly connected with the upper flange of the ground beam 20 and the web plate of the steel column 1 through the high-strength bolt group 19, and therefore, the two U-shaped bending shear composite energy consumption components are fixedly connected with the ground beam 20 and the steel column 1 through the channel steel.
In order to ensure that the U-shaped bending shear composite energy consumption assembly fully plays the energy consumption capacity, the left flange and the right flange of the U-shaped connecting piece 7 are not equal in length, the flange close to the steel column 1 is shortened, the 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 connecting piece 7, so that the length of the short flange is flush with the length of the long flange. Through setting up the backing plate strip, backing plate strip cooperation bolt drives U type connecting piece 7 short flange side and lifts along with steel column 1 when the post swings, produces displacement difference with U type connecting piece 7 long flange side, makes U type bending shear compound power consumption subassembly produce deformation and then full play U type bending shear compound power consumption subassembly's power consumption ability.
In addition, if the column foot part is required to be reinforced according to actual conditions, a triangular rib plate can be further arranged at the gasket strip, and two right-angle sides of the triangular rib plate are respectively welded on the gasket strip and the bottom flange of the steel column.
In addition, the thickness of the flange at one side of the channel steel connecting piece and the bolt connection is thickened to ensure the connection strength of the U-shaped connecting piece, prevent premature failure of the U-shaped connecting piece, influence the energy consumption performance of the damping device, simultaneously facilitate fixing one side of the long flange of the U-shaped connecting piece 7, ensure that the U-shaped connecting piece and one side of the short flange produce displacement difference, and enable the inner shear plate to consume energy better.
8-10, The invention provides a better tension-shear composite energy consumption damping device 12, which comprises an L-shaped tension-compression energy consumption plate 13 and a folded shear energy consumption piece 14, and two triangular rib plates 15 are further added according to whether actual engineering conditions are enhanced or not, wherein one L-shaped limb of the L-shaped tension-compression energy consumption plate 13 is connected with the flange of a steel column 1 through a high-strength bolt group 19, and the other L-shaped limb is connected with a ground beam 20 through the high-strength bolt group 19; one folded end of the folded shearing energy dissipation piece 14 is fixed on one L-shaped limb of the L-shaped tension-compression energy dissipation plate 13, and the other folded end is fixed on the other L-shaped limb of the L-shaped tension-compression energy dissipation plate 13; two triangular rib plates 15 are respectively fixed at two sides to the corners of the L-shaped tension-compression energy dissipation plate 13.
The L-shaped tension and compression energy consumption plate 13 is convenient to process and manufacture and is fixedly arranged at the flange of the steel column 1. It should be noted that, one limb of the L-shaped tension-compression energy dissipation plate 13 connected with the flange of the steel column 1 is a long flange plate, one limb of the L-shaped tension-compression energy dissipation plate connected with the flange of the steel column 1 is a short flange plate, one end of the folded shearing energy dissipation member 14 is welded and fixed on the long flange plate of the L-shaped tension-compression energy dissipation plate 13, and the other end is welded and fixed on the short flange plate of the L-shaped tension-compression energy dissipation plate 13.
Preferably, two sides of one limb (namely a long flange plate) of the L-shaped tension-compression energy consumption plate 13 connected with the flange of the steel column 1 are provided with dog-bone weakening notches, the dog-bone weakening notches are I-shaped plates, the length of the weakening portions is actually adjusted according to engineering, two, three or even four vertical strip-shaped grooves are formed in the middle of the I-shaped plates at equal intervals, the groove bottoms of the strip-shaped grooves are flush or approximately flush with the upper flange position of the channel steel connecting piece, and the grooving length is actually adjusted according to engineering. Bolt holes are formed in the upper portion and the lower portion of the I-shaped plate, the I-shaped plate is connected with the flange of the steel column 1 through the high-strength bolt group 19, the L-shaped other limb is also provided with the bolt holes, and the L-shaped other limb is connected with the upper flange of the ground beam 20 through the high-strength bolt group 19. The position where plastic deformation occurs can be controlled or transferred through weakening and slotting, so that the plastic deformation occurs at the position of relative weakness in the plate, and the energy consumption capability of the plate is better exerted.
Preferably, based on the earthquake-proof design concept of strong column and weak beam, the column foot is considered to have lifting action under the earthquake action, the high-strength bolt group 19 of the L-shaped other limb of the L-shaped pulling and pressing energy consumption plate 13 can be provided with disc springs, namely the high-strength bolt group 19 connected with the ground beam 20 is provided with disc springs, so that the design not only can make the disc springs share the tension force of part of the bolts when the bolts are tensioned, avoid the premature failure of the bolts, but also can provide certain restoring force for the column foot.
The double-insurance composite energy-consumption damping column foot node device capable of recovering the function is in an elastic state under the action of small and medium vibration based on the earthquake-resistant design requirement of the strong column and the weak beam; under the action of large and ultra-large earthquakes, the pull-shear composite energy-consuming damping device and the M-shaped composite energy-consuming damping device are involved in energy consumption, along with the increase of the earthquake action, the bending-shaped shearing energy-consuming piece in the pull-shear composite energy-consuming damping device shears energy consumption, the L-shaped pull-press energy-consuming plate dissipates part of energy under the action of pull-press, the left flange and the right flange of the U-shaped bending-shear composite energy-consuming assembly mutually stagger and bend energy consumption, the inner shearing plate is driven to shear energy consumption, and a bending-shear composite energy-consuming mechanism is formed. After the earthquake action is finished, the energy consumption function can be recovered by disassembling the bolts and replacing the energy consumption components.
In one embodiment, as shown in fig. 12, the folded shearing energy dissipation member 14 is F-shaped, and the folded shearing energy dissipation member 14 and the L-shaped tension-compression energy dissipation plate 13 of the F-shape form a solar-shaped tension-shear composite energy dissipation damper 12. The F-shaped folded shearing energy dissipation member 14 comprises two F-shaped shearing plates and six rib plates, the two F-shaped shearing plates are vertically arranged in parallel and oppositely, two pairs of four rib plates are welded on the front side and the rear side of a web plate of the two F-shaped shearing plates at equal intervals, one rib plate is symmetrically welded on the upper side and the lower side of the flange respectively to form a lattice section, one end of the flange of the F-shaped shearing plate is welded and fixed with one end of the L-shaped tension and compression energy dissipation plate 13, and one end of the web plate is welded and fixed with the other end of the L-shaped tension and compression energy dissipation plate 13. Of course, the number of the F-shaped shearing plates and the rib plates can be flexibly set according to actual conditions.
In another embodiment, as shown in fig. 13, the folded shearing energy dissipation member 14 is τ -shaped, and the τ -shaped folded shearing energy dissipation member 14 and the L-shaped tension-compression energy dissipation plate 13 form a notch-shaped tension-shear composite energy dissipation damper 12. The tau-shaped folded shearing energy dissipation member 14 comprises two I-shaped shearing plates, four rib plates and an H-shaped connecting plate, wherein the two I-shaped shearing plates are vertically arranged in parallel and oppositely, the four rib plates are symmetrically welded on the front side and the rear side of a web plate of the two I-shaped shearing plates at equal intervals, and the two I-shaped shearing plates are connected and fixed to form a lattice section; an H-shaped connecting plate is welded and fixed at the upper ends of the two I-shaped shearing plates, and is welded and fixed with one end of the L-shaped tension-compression energy dissipation plate 13, and the lower ends of the two I-shaped shearing plates are welded and fixed with the other end of the L-shaped tension-compression energy dissipation plate 13. Of course, the number of the I-shaped shearing plates and the rib plates can be flexibly set according to actual conditions.
In the double-insurance composite energy-consumption damping column foot node device with the function capable of recovering, the bending-shearing composite energy-consumption damping device 11 and the pulling-shearing composite energy-consumption damping device 12 are integrated, and if the integral parts generate irreversible plastic deformation, the two dampers can be integrally replaced by disassembling connecting bolts. The assembly type construction improves the repair speed and is convenient for field operation.
Fig. 14 shows a schematic floor diagram of a high-toughness assembled steel structure system with a built-in easily-replaceable high-performance hierarchical energy dissipation damping device, wherein the energy dissipation Liang Zhujie points of the double-fusing safety mechanism are symmetrically arranged at two ends of the same frame beam, and can be arranged in the frame system in multiple layers; the double-insurance composite energy-consumption damping column foot node device capable of recovering functions is only positioned at the column bottom of the first layer of the frame system; the construction measure and the implementation method of the structural system comprehensively and systematically improve the bearing capacity of the steel frame system, and have good assemblability.
When irreversible plastic deformation occurs after the double-insurance composite energy-dissipation damping column foot node device with the recoverable function is replaced, the connecting bolts are removed for replacement, the recoverable function development concept is realized by using the energy-dissipation elements easy to replace, the anti-seismic effect is good, and the method is widely applicable to light industrial plants, high-rise building systems and the like.
The frame system can be combined with a detachable and replaceable shear wall, an energy consumption support and the like to form a frame-shear wall system and a frame-support system, and is flexibly applied to multi-story and high-rise building systems. Fig. 15 shows a schematic floor view of a high-toughness assembled steel structure-shear wall system with an easily replaceable high-performance hierarchical energy-consuming damping device embedded therein, fig. 16 shows a schematic floor view of a high-toughness assembled steel structure-energy-consuming brace system with an easily replaceable high-performance hierarchical energy-consuming damping device embedded therein, the multi-layer frame system is combined with a detachable and replaceable shear wall 21 to form a multi-layer frame-shear wall system, and is combined with energy-consuming braces 22 to form an equal multi-layer frame-supporting system, wherein the energy-consuming braces are arranged in a single-layer V-shaped manner, and two or more layers are arranged in a single-inclined manner.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
While several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the invention. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Claims (10)
1. A high-toughness assembled steel structure system embedded with a high-performance hierarchical energy dissipation damping device easy to replace is characterized by comprising:
the steel column is provided with cantilever beams, and the cantilever beams are I/H-shaped;
the two ends of the steel beam are butted with cantilever beams on the steel columns at the two sides and are I-shaped/H-shaped;
the utility model provides a dual fusing insurance mechanism power consumption beam column node means for connect girder steel and the cantilever beam on the steel column of both sides, include:
The two sets of chain rod type buckling restrained composite energy dissipation devices are oppositely connected to two sides of the web plate at the joint of the cantilever beam and the steel beam through bolts;
the double insurance composite energy consumption damping column foot node device is used for connecting a steel column and a ground beam, and comprises:
Two sets of bending shear composite energy consumption damping devices are oppositely connected to two sides of a web plate of the steel column at column feet through bolts and are connected with the ground beam through bolts;
The two sets of pull-shear composite energy-consumption damping devices are oppositely connected to the two flanges of the steel column through bolts at column feet and are connected with the ground beam through bolts.
2. The steel structural system of claim 1, wherein the link buckling-restrained composite energy dissipation device comprises:
The two dog bone weakening type flange cover plates with the lug plates are distributed in a plurality of the weakening areas of the dog bone weakening type flange cover plates at equal intervals, the lug plate openings are round holes, and the two dog bone weakening type flange cover plates with the lug plates are respectively connected to the inner sides of the upper flange and the lower flange at the joint of the cantilever beam and the steel beam through high-strength bolt groups;
The device comprises two web connecting plates with crescent ear plates, wherein a plurality of crescent ear plates are equidistantly distributed on the web connecting plates, the crescent ear plates are provided with long round holes, the web connecting plates with the crescent ear plates are reserved with bolt holes, one upper side and one lower side of a web at the joint of the cantilever beam and the steel beam are respectively arranged, and the web at the joint of the cantilever beam and the steel beam is connected through a high-strength bolt group;
The two pin shaft shear-resistant damping chain rods penetrate through the oblong holes and the round holes to connect the dog bone weakening type flange cover plate with the lug plate and the web plate connecting plate with the crescent type lug plate.
3. The steel structure system of claim 1, wherein the bend-shear composite energy dissipation damping device is M-shaped, comprising:
The left flange of the left U-shaped bending shear composite energy consumption assembly and the right flange of the right U-shaped bending shear composite energy consumption assembly are respectively provided with a bolt hole, the left flange and the right flange of the steel column are correspondingly provided with bolt holes, and the two U-shaped bending shear composite energy consumption assemblies are connected with the left flange and the right flange of the steel column through high-strength bolt groups;
the middle connecting piece is arranged between the left U-shaped bending shear composite energy consumption assembly and the right U-shaped bending shear composite energy consumption assembly, is respectively connected and fixed with the two U-shaped bending shear composite energy consumption assemblies, and is connected with the steel column and the ground beam through the high-strength bolt group.
4. A steel structure system according to claim 3, wherein the U-bend shear composite energy consuming component comprises:
the U-shaped connecting piece consists of left and right flanges and an arc web;
And the inner shearing plate is arranged between the left flange and the right flange of the U-shaped connecting piece, and only the left side and the right side of the inner shearing plate are welded and connected with the left flange and the right flange of the U-shaped connecting piece.
5. The steel structure system according to claim 4, wherein the left and right flanges of the U-shaped connector are not equal in length, the flanges near the flanges of the steel column are shortened, and a filler strip is welded at the shortened portions of the flanges of the U-shaped connector inside the flanges of the steel column so that the lengths of the left and right flanges are flush.
6. The steel structure system according to claim 3, wherein the intermediate connecting piece is a channel steel connecting piece and is composed of upper and lower flanges and a web plate, bolt holes are formed in the web plate of the channel steel connecting piece and the flange plate close to one side of the ground beam, bolt holes are correspondingly formed in the web plate of the steel column, bolt holes are correspondingly formed in the upper flange plate of the ground beam, and the channel steel connecting piece is connected with the steel column and the ground beam through a high-strength bolt group.
7. The steel structural system of claim 1, wherein the tension shear composite energy dissipation damping device comprises:
An L-shaped tension-compression energy consumption plate, wherein one L-shaped limb is connected with the steel column through a high-strength bolt group, and the other L-shaped limb is connected with the ground beam through a high-strength bolt group;
And one end of the folded part is fixed on one L-shaped limb of the L-shaped tension-compression energy dissipation plate, and the other end of the folded part is fixed on the other L-shaped limb of the L-shaped tension-compression energy dissipation plate.
8. The steel structural system of claim 7, wherein the accordion shear energy consuming member is F-shaped comprising:
The two F-shaped shearing plates are vertically arranged in parallel and opposite;
the rib plates are symmetrically welded on the front side and the rear side of the web plate of the two F-shaped shearing plates at equal intervals, and the upper side and the lower side of the flange of the two F-shaped shearing plates; and
One end of each flange of the two F-shaped shearing plates is welded and fixed with one limb of the L-shaped tension-compression energy dissipation plate, and one end of each web is welded and fixed with the other limb of the L-shaped tension-compression energy dissipation plate.
9. The steel structural system of claim 7, wherein said accordion shear energy consuming member is τ -shaped comprising:
The two I-shaped shearing plates are vertically arranged in parallel and opposite;
the rib plates are symmetrically welded on the front side and the rear side of the web plate of the two I-shaped shear plates at equal intervals;
And the H-shaped connecting plate is welded and fixed at the upper ends of the two I-shaped shearing plates, and is welded and fixed with one limb of the L-shaped tension-compression energy consumption plate, and the lower ends of the two I-shaped shearing plates are welded and fixed with the other limb of the L-shaped tension-compression energy consumption plate.
10. Use of a steel structural system according to any one of claims 1 to 9 in a multi, high rise framing system, a frame-shear wall system or a frame-support system.
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