CN102900166A - Buckling restrained brace, as well as joint connecting plate and mounting method thereof - Google Patents
Buckling restrained brace, as well as joint connecting plate and mounting method thereof Download PDFInfo
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- CN102900166A CN102900166A CN2011102163423A CN201110216342A CN102900166A CN 102900166 A CN102900166 A CN 102900166A CN 2011102163423 A CN2011102163423 A CN 2011102163423A CN 201110216342 A CN201110216342 A CN 201110216342A CN 102900166 A CN102900166 A CN 102900166A
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Abstract
The invention belongs to the technical field of shock absorption of civil engineering structures and specifically relates to an anti-buckling brace for shock absorption and energy dissipation. The anti-buckling brace comprises a steel core and a lateral restraint unit, wherein a surface isolation material layer is further arranged between the steel core and the lateral restraint unit; connecting units are arranged at the two ends of the steel core; each connecting unit comprises a main connecting plate and an auxiliary connecting plate; the main connecting plate is straight and forms one part of the steel core; the auxiliary connecting plate is welded and fixed on the non-assembly surface of the main connecting plate in the axial direction of the steel core and arranged perpendicular to the main connecting plate; and when the auxiliary connecting plate is welded and fixed with the main connecting plate, the outer end face of the auxiliary connecting plate is located at the outer side of the outer end face of the main connecting plate in the axial direction of the steel core. The anti-buckling brace provided by the invention is compact in structure, economic and practicable. The invention also discloses a welding mounting method of the anti-buckling brace with the connection units; and the method is simple and feasible, capable of thoroughly eliminating adverse effect of mounting errors on the energy dissipation and shock absorption properties of the anti-buckling brace, and thereby being very safe and reliable.
Description
Technical field
The invention belongs to civil engineering structure cushion technique field, be specifically related to a kind of building structural element, particularly a kind of buckling restrained brace for the damping power consumption.
Background technology
The development of modern architecture more and more trends towards tall and bigization, therefore must consider the anti-seismic performance of building structure in design process, particularly is positioned at the building of earthquake district occurred frequently, especially should be noted that.Except the prevention seismic damage, many design of architectures also need to consider wind resistance.For addressing this problem, the member that more external scientific research personnel have not had flexing to occur when having invented pressurized, and they are applied in the building structure realize the power consumption antidetonation, in the industry this class A of geometric unitA is called anti-buckling support, buckling restrained brace or the anti-support of buckling, for sake of convenience, hereinafter be referred to as buckling restrained brace.The mounting means of existing buckling restrained brace mainly comprises following three kinds of modes: (1) bearing pin connects; (2) bolt connects; (3) end face butt welding.Because the intensity of steel is very high, it just enters state of plastic deformation about elastic compression 2～3mm, so buckling restrained brace is all very high to the intensity and the required precision that connect, and engineering practice shows, existing three kinds of connected modes all exist some problems.For example, it is high that bearing pin connects the merging precision requirement; When with bolts, the junction plate end will enlarge size, and coarse processing will be carried out in the surface, and bolt must be selected the bolt of high strength grade (10.9 grades or more than), so cost is higher, usually also will set up junction plate, will further promote cost.And it is a lot of to utilize bolt to connect the factor that affects the buckling restrained brace service behaviour, the quality of fit of bolt and connecting hole is difficult for guaranteeing, bolt needs special-purpose torque spanner to tighten etc., both made and found still can skid so in test, these factors are easy to cause the decline of buckling restrained brace energy-dissipating and shock-absorbing performance, even lose efficacy; The mode of end face butt welding is lower to the requirement of precision, also has more advantage on economy, but studies show that, easily produces stress with the weld seam of stressed perpendicular direction and concentrates, and disturbs under the power effect in circulation and is prone to fatigue fracture, and reliability is lower.In sum, all there are certain drawback in syndeton and the installation side of existing buckling restrained brace, a kind of new buckling restrained brace product that can thoroughly address the above problem of market in urgent need.
Summary of the invention
The object of the invention is to overcome defects, provide a kind of and more easily install, and the economy of installing and the buckling restrained brace of better reliability.
Buckling restrained brace of the present invention is to realize like this, comprise steel core and lateral restraint unit, steel core is by active section, linkage section and changeover portion form, active section is positioned at the lateral restraint unit, also be provided with surperficial spacer material layer between steel core and the lateral restraint unit, it is characterized in that at least one end setting of steel core is welded to connect the unit, be welded to connect the unit and comprise main junction plate, side connects short slab and auxiliary junction plate, main junction plate is the part of steel core, side connect short slab and auxiliary junction plate along steel core shaft on the non-butting surface that is fixedly installed on main junction plate, side connects short slab and partly is positioned at the lateral restraint unit, and auxiliary junction plate is beyond the steel core axial direction extends out to main junction plate.
Wherein, described side connects short slab and auxiliary junction plate can integrated setting, consists of side and connects long slab, and side connection long slab is beyond the steel core axial direction extends out to main junction plate; Side connects short slab and auxiliary junction plate can also consist of side and connect long slab being welded into one, and for the ease of implementing welding, side connects short slab or/and the butt end of auxiliary junction plate arranges bevel for welding.
The structure of described steel core is varied, and its shape of cross section can be " one " font, also can be " ten " font or wrong cross, waits various shapes.The concrete structure of lateral restraint unit also can be varied, for example can be the restraining structure that concrete consists of, and can be the restraining structure that steel concrete consists of, and can also be restraining structure of consisting of together of outer steel pipe and concrete etc.The end shape of main junction plate can be rectangle, isosceles trapezoid or " V " font that falls.
The side that arranges on the non-butting surface of main junction plate connects long slab and can also be the part of steel core in the buckling restrained brace or/and side connects short slab, be that side connects long slab or/and side connection short slab is that structure of steel pole is to the extension of outside, it has a style of one's own, be not side to be connected long slab or/and side is weldingly fixed on the steel core after connecting short slab, this technical scheme has reduced weld seam quantity, not only simplifies manufacturing procedure and can also avoid the not good various harmful effects that bring of welding quality.
For the ease of installing, adopt split-type structural between the auxiliary junction plate that arranges on the non-butting surface of main at least junction plate one side and main junction plate, assist junction plate to be connected short slab, main junction plate and connected node plate with side during installation and be welded and fixed respectively continuous.In addition, in addition, on the non-butting surface of main junction plate limiting plate can also be set, default side is connected long slab or auxiliary junction plate is arranged on the same non-butting surface on limiting plate and the main junction plate, can utilize limiting plate to cooperate with the connected node plate in the installation process, prevent that buckling restrained brace of the present invention from deflecting, welding job is more easily implemented.Main junction plate is or/and the docking end face and also bevel for welding can be set, more convenient being welded and fixed of auxiliary junction plate and connected node plate.
In order to guarantee structural strength, an auxiliary junction plate or a side stringer or a side are set on the non-butting surface of each of main junction plate at least connect long slab, and the bulk strength of the auxiliary junction plate that arranges on two non-butting surfaces of main junction plate, side stringer or side connection long slab should keep identical, so that structure stress is balanced, prevent from occurring in the use procedure unstable phenomenon.
Need to prove, in the buckling restrained brace of the present invention, can adopt simultaneously linkage unit of the present invention in two ends, also only an end arranges the described unit that is welded to connect, the other end adopts existing various linkage unit, such as the unit that is articulated and connected, bolt linkage unit, the bolt linkage unit of setting up junction plate or end face butt welding linkage unit etc.During use, utilize to be welded to connect the unit and to cooperate with existing linkage unit and be connected, error and gap that can generation when being welded to connect the unit and effectively eliminating existing linkage unit and connect make connection procedure more simple and reliable.
Another object of the present invention is to provide a kind of and connected node plate the invention described above buckling restrained brace fit applications, it is characterized in that arranging on the connected node plate gap that cooperates with main junction plate in the buckling restrained brace.According to the difference of main junction plate shape in the buckling restrained brace, gap can be an end open rectangle, isosceles trapezoid or " V " font.For the ease of implementing welding, the periphery of gap can also arrange bevel for welding.
The 3rd purpose of the present invention is to provide a kind of mounting method of above-mentioned buckling restrained brace, and it comprises the steps:
(1) according to the real size of buckling restrained brace, the position of corresponding main junction plate utilizes the instrument on-site cutting to go out corresponding gap on the connected node plate default or that Site Welding is fixedly installed in frame construction, and burr and the oxide skin polishing of gap periphery are cleaned out;
(2) the main junction plate with buckling restrained brace places the gap that cuts out on the connected node plate, behind the centering position by spot welding with main junction plate or/and auxiliary junction plate and connected node plate be fixed together;
(3) main junction plate and the connected node plate of buckling restrained brace are implemented to be welded and fixed along counterface between the two, auxiliary junction plate and the connected node plate that will be fixedly installed on main junction plate surface are integrally welded again, or/and will independently assist junction plate and connected node plate and main junction plate integrally welded;
(4) remove welding slag and the metal material surface polishing cleaned out, then polish, at last bare metallic surface is implemented antirust processing.
Based on above-mentioned mounting method, also can set in advance gap on the connected node plate in the step (1), to be welded and fixed in advance with the connected node plate of gap again or Site Welding is fixedly installed in the frame construction, then by step (2) junction plate of the buckling restrained brace of correspondence processing is put into gap, continue again to implement subsequent step.
It is pointed out that the non-butting surface of described main junction plate, refer to that main junction plate and connected node plate are assembled together when implementing welded and installed, between the gap of main junction plate and connected node plate without the surface of matching relationship.
Buckling restrained brace of the present invention, by the unit that is welded to connect of main junction plate and auxiliary junction plate formation is set at least one end of steel core, in the time of can realizing linking to each other with the external frame structure welding, the force direction that is subjected to of the bearing of trend of most of attachment weld and steel core keeps non-perpendicular state, therefore stressed more reasonable, reliability is higher.In addition, buckling restrained brace compact conformation of the present invention needs auxiliary material few, the connected node plated construction of the present invention of its fit applications is simple, easy to process, and the fit applications of the two is adaptable to construction error and mismachining tolerance, economical and practical, market application foreground is very wide.
The welded and installed method of buckling restrained brace of the present invention consumes auxiliary material few, simple, can thoroughly eliminate alignment error to the harmful effect of the energy-dissipating and shock-absorbing performance of buckling restrained brace self, and is fool proof reliable.
Description of drawings
Fig. 1 is one of structural representation of buckling restrained brace of the present invention.
Fig. 2 is the upward view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is one of B-B sectional view of Fig. 2.
Fig. 5 be Fig. 2 the B-B sectional view two.
Fig. 6 is the structural representation of frame construction and connected node plate
Fig. 7 is one of scheme of installation of buckling restrained brace of the present invention shown in Figure 1.
Fig. 8 is the rear elevation of Fig. 7.
Fig. 9 be buckling restrained brace of the present invention shown in Figure 1 scheme of installation two.
Figure 10 be buckling restrained brace of the present invention structural representation two.
Figure 11 be buckling restrained brace of the present invention structural representation three.
Figure 12 be buckling restrained brace of the present invention structural representation four.
Figure 13 is the upward view of Figure 12.
Figure 14 is one of C-C sectional view of Figure 12.
Figure 15 is one of D-D sectional view of Figure 13.
Figure 16 is one of welded and installed schematic diagram of main junction plate and connected node plate.
Figure 17 be main junction plate and connected node plate the welded and installed schematic diagram two.
Figure 18 be Figure 12 the C-C sectional view two.
Figure 19 be Figure 13 the D-D sectional view two.
Figure 20 be buckling restrained brace of the present invention structural representation six.
Figure 21 is the upward view of Figure 20.
Figure 22 is the scheme of installation of buckling restrained brace of the present invention shown in Figure 20.
Figure 23 is seven and scheme of installation of the structural representation of buckling restrained brace of the present invention.
Figure 24 is the rear elevation of Figure 23.
Figure 25 is eight and scheme of installation of the structural representation of buckling restrained brace of the present invention.
Figure 26 is nine and scheme of installation of the structural representation of buckling restrained brace of the present invention.
The specific embodiment
Embodiment one
Buckling restrained brace of the present invention as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise steel core 2 and lateral restraint unit 1, also be provided with surperficial spacer material layer 3 between steel core 2 and the lateral restraint unit 1, the shape of cross section of steel core is " one " font, and lateral restraint unit 1 is made of Reinforced Concrete Materials.Part shown in a zone is the active section of buckling restrained brace of the present invention among Fig. 1, and the b zone is linkage section, and linkage section is symmetrically distributed in the active section both sides, and the part between active section and the linkage section is changeover portion.The linkage section setting of steel core two ends is welded to connect the unit, be welded to connect the unit and comprise that main junction plate 4, side connect short slab 14, auxiliary junction plate 15 is connected long slab 5 with side, the cross section of main junction plate 4 is " one " font, and main junction plate 4 is the part of steel core 2, side connection long slab 5 is connected short slab 14 and axially is weldingly fixed on accordingly on two non-butting surfaces of main junction plate 4 along steel core 2 respectively with side, and setting is perpendicular to one another with main junction plate 4, at the steel core axial direction, auxiliary junction plate 5 extends out to the main 4 plates outside that connects.In order to prevent unstability, side connects long slab 5 and side connection short slab 14 namely begins to arrange from changeover portion, and its part is arranged in lateral restraint unit 1.
When the present invention and steel framework structure 6 welded and installed, as follows the operation: (1) as shown in Figure 6, in frame construction 6, be welded and fixed in advance connected node plate 7, the real size of buckling restrained brace according to the present invention, the position of corresponding main junction plate 4 utilizes the cutting torch on-site cutting to go out corresponding gap 8 on connected node plate 7, then burr and the oxide skin polishing of gap 8 peripheries is cleaned out; (2) lifting buckling restrained brace of the present invention, main junction plate 4 is placed the gap 8 that cuts out on the connected node plate 7, side connects long slab 5 and is overlapped on connected node plate 7 surfaces, by spot welding main junction plate 4 or side is connected long slab 5 and connected node plate 7 pre-connections together behind the centering position; (3) as shown in Figure 7, implement welding at main junction plate 4 with the counterface that docks of connected node plate 7, utilize three road weld seams 9,10 and 16 that the two is linked together, the side connection long slab 5 that then will be weldingly fixed on main junction plate 4 surfaces is also integrally welded with connected node plate 7.In addition, as shown in Figure 8, at opposite side, will assist junction plate 15 to be connected short slab 14 butt welding with side, and will assist junction plate 15 to be welded and fixed respectively with main junction plate 4 and connected node plate 7 to link to each other.In order to see clearly, Fig. 7 and Fig. 8 only describe as example take the welded and installed that is welded to connect between unit and the connected node plate of buckling restrained brace one end of the present invention, in like manner, the welded and installed of its other end also is like this, as shown in Figure 9, the main junction plate 4 of the other end is by three weld seams 12,13 are welded and fixed with the 17 connected node plates 11 that are fixedly installed with frame construction 6 oblique uppers and are in the same place, equally, auxiliary junction plate 5 also is connected respectively short slab 14 with side, main fishplate bar 4 and connected node plate 11 companies' of weldering (not specifically illustrating) of adding realize fully being welded and fixed of buckling restrained brace of the present invention and frame construction 6; (4) remove welding slag and the metal material surface polishing cleaned out, then polish, at last bare metallic surface is implemented antirust processing, finish whole welded and installed processes.
Owing to adopting welded and installed to fix between buckling restrained brace of the present invention and the frame construction, therefore having the following advantages: 1) compare adaptable to construction error and mismachining tolerance, simple installation with hinged the connection with bolt of bearing pin; 2) need rough surface to process unlike the bolt connection, do not receive without factor affecting such as greasy dirt and mounting torque sizes yet, better reliability can guarantee to make when earthquake occurs lateral force Main Function that frame construction is subject on buckling restrained brace, gives full play to product energy-dissipating and shock-absorbing performance; 3) owing to not adopting bolt and junction plate to connect, buckling restrained brace of the present invention to be welded to connect block construction simpler, need not punching, can not reduce intensity of joint board, the end is therefore enlarged end size also, economy is better; 4) the most important thing is, weld seam is subjected to force direction mutually vertical with steel core during traditional docking welded and installed, easily produce along steel core shaft to remaining tensile stress, and weld seam concentrates on a section, formation stress is concentrated, in case there are sand holes in the weld seam, the genetic defects such as crackle, because the cause that stress is concentrated, stressed rear defective will be amplified rapidly damage repeatedly, because the present invention is when welded and installed, most of weld seam between the connected node plate of main junction plate and frame construction is along the axial setting of steel core, with steel core be subjected to force direction identical, so more reasonable stress of weld seam, produce along steel core shaft to tensile stress little, stress is concentrated few, the butt welded seam defective, initial crack and stress are concentrated insensitive, and the reliability of welding is better.
Among the present invention, the concrete structure of lateral restraint unit can be varied, except the already mentioned reinforced concrete structure that utilizes consists of the lateral restraint unit, can also utilize other structures such as concrete structure or outer steel pipe and concrete combining structure etc. to consist of the lateral restraint unit, as long as restraint forces is enough, can both reach same effect.In addition, need to prove, in actual applications, in order to guarantee to be connected with the effective of connected node plate, also can arrange on the non-butting surface of a side of main junction plate above an auxiliary junction plate.For example as shown in Figure 5, two sides also can be set on the main junction plate 4 of the present invention connect long slabs 5, it should be noted that to arrange on another non-butting surface of corresponding main junction plate 4 that two sides connect short slabs and two auxiliary junction plates are corresponding with it.Meaning with upside connection long slab is set is, the weld seam total length of increase and connected node plate has improved bonding strength on the one hand; On the other hand, in the process of implementing welded and installed step (2), main junction plate places in the gap that cuts out on the connected node plate, side connects long slab and is overlapped on the connected node plate surface, side more than two or two connects long slab can prevent effectively that main junction plate from deflecting, easier centering position.It is to be noted in addition, in order to guarantee stress equalization, side connects the selection that long slab 5 and side connect short slab 14 and auxiliary junction plate 15 should be as far as possible identical, and side connects short slab 14 and assists the total length of junction plate 15 amalgamations also should connect long slab 5 with side and keeps as far as possible identical.
In addition, it is pointed out that the non-butting surface of described main junction plate, refer to that main junction plate and connected node plate are assembled together when implementing welded and installed, between the gap of main junction plate and connected node plate without the surface of matching relationship.For example among Fig. 4, the surface that is welded with side connection long slab 5 or auxiliary junction plate 15 in the main junction plate 4 is the non-butting surface of described main junction plate.Also be so among the follow-up embodiment, repeat no longer one by one.
In this example, to adopt rectangle master junction plate in the buckling restrained brace, on the corresponding connected node plate rectangle gap being set is that example describes.In actual applications, the shape of main junction plate also can be for isosceles trapezoid or the shape such as " V " font of falling, and is different according to the main junction plate shape of buckling restrained brace, only gap need to be arranged to accordingly isosceles trapezoid or be fallen the shape such as " V " font get final product.So, buckling restrained brace of the present invention be welded to connect the unit when being welded to connect with the node unit plate, the weld seam of its formation mostly is subjected to the non-perpendicular state of force direction maintenance with steel core, therefore the tensile stress that produces is little, stress is concentrated few, and the weld material when stressed around the defective can be shared the stressed of fault location automatically, so the anti-fatigue ability of weld seam is stronger, longer service life, welding quality is more reliable.
The structure of steel core can be varied among the present invention, and its shape of cross section can be " one " font, also can be the various shapes such as " ten " font, as long as use the unit that is welded to connect of the present invention at linkage section, can realize beneficial effect of the present invention.
Embodiment two
Buckling restrained brace of the present invention as shown in figure 10, be with the difference of embodiment one, comprise four auxiliary junction plates 15 and are connected a side connection short slab 14, the auxiliary junction plate 15 that wherein arranges on the non-butting surface with main junction plate 4 in advance is connected 14 pairs of short slabs and is welded into one with side, consist of a knockdown side and connect long slab, and will assist junction plate 15 to be weldingly fixed on the corresponding non-butting surface of main junction plate.
When this routine described buckling restrained brace of the present invention and frame construction welded and installed shown in Figure 6, its step and embodiment one are identical, no longer are repeated in this description at this.
Embodiment three
Based on the technology contents of embodiment one and embodiment two, buckling restrained brace of the present invention can also develop into structure shown in Figure 11, comprises that 4 of four and main junction plates are connectionless, auxiliary junction plate 15 independently.
When this routine described buckling restrained brace of the present invention and frame construction welded and installed shown in Figure 6, compare with method described in the embodiment one, needing to increase secondary will assist junction plate 15 to be connected the operation of short slab 14, main junction plate 4 and 7 welding of connected node plate with side, all the other installation processes are identical, no longer are repeated in this description at this.
In this routine described technical scheme, the auxiliary junction plate of buckling restrained brace of the present invention is independent the setting all, is welded on during to be welded the installation on the connected node plate of side connection short slab, main junction plate and frame construction again.But in order to reduce the site work amount; the auxiliary junction plate all independent technical scheme that arranges is not generally recommended as preferred version; certainly; during for special circumstances such as on-the-spot installing space complexity; also can adopt all independent technical schemes that arranges of auxiliary junction plate, also in protection scope of the present invention.
Embodiment four
Such as Figure 12, Figure 13, Figure 14 and buckling restrained brace of the present invention shown in Figure 15, be with the difference of embodiment one, steel core 2 is formed by two angle steel bight butt welding, and its shape of cross section is " ten " font, and the lateral restraint unit is made of outer steel pipe 18 and Concrete Filled material 19.Such as Figure 13 and shown in Figure 15, main junction plate 4 comprises that two angle steel are combined into each limit of " one " font, wherein another limit of an angle steel extends to main junction plate 4 outsides as side connection long slab 5, another limit of another root angle steel only extends to then that the lateral restraint unit is outside to be consisted of side and connect short slab 14, with guarantee can with the smooth erection welding of connected node plate.In addition, in order to improve welding quality, in two ends that are used for welding of main junction plate 4 groove is set respectively, specifically as shown in figure 15.
This routine described buckling restrained brace is identical with embodiment one with the welded and installed process of frame construction shown in Figure 6, at this repeated description not.It is to be noted as shown in figure 16 owing to being provided with groove, can Effective Raise master junction plate 4 and connected node plate 7 between welding quality, can guarantee preferably bonding strength.In addition, as shown in figure 17 because the gap on the connected node plate 7 is on-the-spot to cut out with cutting torch, so shape might be not standard very, when the space between main junction plate 4 and the connected node plate 7 is larger, also can set up supporting plate 18 to guarantee the smooth enforcement of welding at dorsal part.Only dock being welded to connect as example between the end face take main junction plate 4 and connected node plate 7 one among the figure and describe, being welded to connect between all the other docking end faces and other main junction plates and the connected node plate also is like this, enumerates no longer one by one.
Embodiment five
Such as Figure 12, Figure 13, Figure 18 and buckling restrained brace of the present invention shown in Figure 19, be with the difference of embodiment four, steel core 2 is welded to one another by three block plates and forms, and its shape of cross section is " ten " font.Such as Figure 13 and shown in Figure 19, three block plates that form steel core, the main junction plate 4 of respectively formation, side that extend to linkage section connect long slab 5 and are connected short slab 14 with side, and wherein side connection long slab 5 is connected with side on the non-butting surface that short slab 14 is vertically welded in respectively main junction plate 4 accordingly.
This routine described buckling restrained brace is identical with embodiment one with the welded and installed process of frame construction shown in Figure 6, at this repeated description not.
Embodiment six
Such as Figure 20 and buckling restrained brace of the present invention shown in Figure 21, be with the difference of embodiment one, side connects long slab 5 and is connected with side on the non-butting surface that short slab 14 is weldingly fixed on main junction plate 4 respectively smoothly.
When installing with steel framework structure welding shown in Figure 6, as shown in figure 22, its installation process is identical with embodiment one, but because side connection long slab 5 is large with the area that reclines of connected node plate 7, therefore be difficult for deflecting behind the gap of the main junction plate 4 embedding connected node plates 7 of buckling restrained brace, be more conducive to welding procedure.Need to prove, at opposite side, remain first butt welding between auxiliary junction plate 15 and the side connection short slab 14, and then will assist junction plate 15 and main junction plate 4 and connected node plate 7 to weld together respectively, auxiliary junction plate 15 also connects long slab 5 the same smooth main junction plate 4 and connected node plate 7 surfaces (the not concrete description of drawings) of being arranged on side during welding.
The various advantages of in having embodiment one, describing, because side connects long slab 5, auxiliary junction plate 15 and is connected with side on the non-butting surface that short slab 14 is weldingly fixed on main junction plate 4 in this routine described buckling restrained brace respectively smoothly, therefore its linkage section take up room less, to the better adaptability of installing space.
Embodiment seven
Such as Figure 23 and buckling restrained brace of the present invention shown in Figure 24, be with the difference of embodiment six, each is welded to connect in the unit, two sides are set connect long slab 5, corresponding side connects short slab 14 and auxiliary junction plate 15 also arranges respectively two, side connects long slab 5 and is connected with side on short slab 14 is weldingly fixed on respectively main junction plate 4 along two non-butting surfaces from steel core shaft to the compartment of terrain, during welded and installed, auxiliary junction plate 15 is connected respectively 14 pairs of postweldings of short slab and is weldingly connected again with main junction plate 4 and connected node plate 7 with side.Remove in addition, its welded and installed process and embodiment one are basic identical.
This type of technical scheme increased the weld seam total length of buckling restrained brace and connected node plate by ground, so bonding strength is higher.
Embodiment eight
Buckling restrained brace of the present invention as shown in figure 25, the difference of itself and embodiment one be, main junction plate 4 be shaped as isosceles trapezoid.In addition, frame construction 6 is made of steel concrete, when framing structure 6, utilize anchor structure 21 that connected node plate 7 is cast in the frame construction 6, before building, set in advance the isosceles trapezoid gap corresponding with main junction plate shape at connected node plate 7, the size of gap is slightly larger than the overall size of main junction plate 4.In addition, arrange in 4 welding of main junction plate that simultaneously welding arranges two limiting plates 24 on that non-butting surface that side connects long slab 5.
When installing fixedly between buckling restrained brace and the frame construction 6, preset gap on the connected node plate 7, therefore the operation of cutting gap can be omitted in the scene, directly will assemble between buckling restrained brace lifting and the connected node plate 7, step (2) is identical to the described process of step (4) among its follow-up installation process and the embodiment one, no longer is repeated in this description at this.In addition, because map sheet limits, still be connected to example with an end of buckling restrained brace of the present invention with connected node plate and frame construction at this and describe, the installation connection of the other end is similar with it, and no longer other accompanying drawing is described.
Because main the company on the arm-tie 4 is provided with two limiting plates 24, in the installation process, when main junction plate 4 embedded in the gap, limiting plate 24 abutted in the side of connected node plate 7, can prevent effectively that buckling restrained brace from deflecting, more convenient welding.
Certainly, based on this routine described know-why, in actual applications, the shape of main junction plate also can be for falling other shapes such as " V " font, only gap need to be arranged to accordingly corresponding shape and be cooperated with it and get final product, and can realize good effect.
Embodiment nine
As a kind of special case, buckling restrained brace of the present invention as shown in figure 26 is that with the difference of embodiment one end of steel core is provided with the embodiment one described unit that is welded to connect of the present invention, and the other end arranges the existing bolt linkage unit 23 that steel plate consists of.
The frame construction 6 of steel as shown in figure 26, connected node plate 7 and connected node plate 11 are weldingly fixed on the frame construction 6 in advance, and size and structure according to buckling restrained brace two ends master's junction plate 4 and bolt linkage unit 23, offer in advance gap (not specifically illustrating among the figure) on the connected node plate 7, offer in advance connecting through hole (not specifically illustrating among the figure) on the connected node plate 11.When being fixedly connected with the frame construction 6 of steel, the lifting buckling restrained brace, utilize first high-strength bolt 22 that the connected node plate 11 that is fixedly installed on buckling restrained brace and the frame construction 6 is linked to each other, after the main junction plate 4 of the buckling restrained brace other end is embedded in the gap on the connected node plate 7, with high-strength bolt 22 lockings; Then implement welding at main junction plate 4 and connected node plate 7 counterfaces, utilize three road weld seams 9,10 and 20 that the two is linked together, then side is connected long slab 5 and connect with 7 welderings of connected node plate, will assist again junction plate (not specifically illustrating among the figure) to be connected short slab (not specifically illustrating among the figure), main junction plate 4 and connected node plate 7 with side also integrally welded.Remove welding slag and the metal material surface polishing is cleaned out, then polish, at last bare metallic surface is implemented antirust processing, finish whole welded and installed processes.
Need to prove, this example arranges the described unit that is welded to connect with an end in the buckling restrained brace of the present invention, it is that example describes that the other end adopts existing bolt linkage unit, in the practical application, the other end can also adopt other existing linkage unit, such as the unit that is articulated and connected, the bolt linkage unit of setting up junction plate or end face butt welding linkage unit etc.During use, utilize to be welded to connect the unit and to cooperate with existing linkage unit and be connected, error and gap that can generation when being welded to connect the unit and effectively eliminating existing linkage unit and connect make connection procedure more simple and reliable, can realize same effect.This shows, the applicability of buckling restrained brace of the present invention is very strong, and is very practical.
Buckling restrained brace of the present invention, the unit that is welded to connect of main junction plate, side connection short slab and auxiliary junction plate formation is set by the linkage section at steel core, in the time of can realizing linking to each other with the external frame structure welding, the bearing of trend of main attachment weld is subjected to force direction consistent with steel core, therefore stressed more reasonable, reliability is higher.In addition, buckling restrained brace compact conformation of the present invention, economical and practical, market application foreground is very wide.The welded and installed method of buckling restrained brace of the present invention, simple, can thoroughly eliminate alignment error to the harmful effect of the energy-dissipating and shock-absorbing performance of buckling restrained brace self, fool proof reliable.
Claims (14)
1. buckling restrained brace, comprise steel core and lateral restraint unit, steel core is by active section, linkage section and changeover portion form, active section is positioned at the lateral restraint unit, also be provided with surperficial spacer material layer between steel core and the lateral restraint unit, it is characterized in that at least one end setting of steel core is welded to connect the unit, be welded to connect the unit and comprise main junction plate, side connects short slab and auxiliary junction plate, main junction plate is the part of steel core, side connect short slab and auxiliary junction plate along steel core shaft on the non-butting surface that is fixedly installed on main junction plate, side connects short slab and partly is positioned at the lateral restraint unit, and auxiliary junction plate is beyond the steel core axial direction extends out to main junction plate.
2. buckling restrained brace according to claim 1 is characterized in that side connects short slab and auxiliary junction plate integrated setting, consists of side and connects long slab, and side connects long slab beyond the steel core axial direction extends out to main junction plate.
3. buckling restrained brace according to claim 1 is characterized in that side connection short slab and auxiliary junction plate to being welded into one, consisting of side and connect long slab, and side connects short slab or/and the butt end of auxiliary junction plate arranges bevel for welding.
4. buckling restrained brace according to claim 2 is characterized in that the side that arranges on the non-butting surface of main junction plate connects long slab or/and side connection short slab is the part of steel core in the buckling restrained brace.
5. buckling restrained brace according to claim 1, it is characterized in that adopting split-type structural between the auxiliary junction plate that arranges on the non-butting surface of main at least junction plate one side and main junction plate, auxiliary junction plate is connected short slab, main junction plate and connected node plate and is welded and fixed respectively continuous during installation with side.
6. buckling restrained brace according to claim 1 is characterized in that main junction plate or/and auxiliary junction plate is provided with bevel for welding with the end face that docks of connected node plate.
7. buckling restrained brace according to claim 1 is characterized in that on each non-butting surface of main junction plate an auxiliary junction plate being set at least, or a side connects short slab, or a side connects long slab.
8. buckling restrained brace according to claim 1, the end shape that it is characterized in that main junction plate are rectangle, isosceles trapezoid or " V " font that falls.
9. buckling restrained brace according to claim 1 is characterized in that on the non-butting surface of main junction plate limiting plate being set, and default side is connected long slab or auxiliary junction plate is arranged on the same non-butting surface on limiting plate and the main junction plate.
One kind with claim 1-9 in the connected node plate of the described buckling restrained brace of arbitrary claim, it is characterized in that arranging on the connected node plate gap that cooperates with main junction plate in the buckling restrained brace.
11. the connected node plate of buckling restrained brace according to claim 10, what it is characterized in that gap is shaped as an end open rectangle, isosceles trapezoid or " V " font.
12. the connected node plate of buckling restrained brace according to claim 11 is characterized in that the periphery of gap arranges bevel for welding.
13. the mounting method of the described buckling restrained brace of arbitrary claim is characterized in that comprising the steps: among the claim 1-9
(1) according to the real size of buckling restrained brace, the position of corresponding main junction plate utilizes the instrument on-site cutting to go out corresponding gap on the connected node plate default or that Site Welding is fixedly installed in frame construction, and burr and the oxide skin polishing of gap periphery are cleaned out;
(2) the main junction plate with buckling restrained brace places the gap that cuts out on the connected node plate, behind the centering position by spot welding with main junction plate or/and auxiliary junction plate and connected node plate be fixed together;
(3) main junction plate and the connected node plate of buckling restrained brace are implemented to be welded and fixed along counterface between the two, auxiliary junction plate and the connected node plate that will be fixedly installed on main junction plate surface are integrally welded again, or/and will independently assist junction plate and connected node plate and main junction plate integrally welded;
(4) remove welding slag and the metal material surface polishing cleaned out, then polish, at last bare metallic surface is implemented antirust processing.
14. mounting method according to claim 13, it is characterized in that setting in advance gap on the connected node plate in the step (1), to be welded and fixed in advance with the connected node plate of gap again or Site Welding is fixedly installed in the frame construction, then by step (2) junction plate of the buckling restrained brace of correspondence processing is put into gap, continue again to implement subsequent step.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110216342.3A CN102900166B (en) | 2011-07-29 | 2011-07-29 | Buckling restrained brace, as well as joint connecting plate and mounting method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110216342.3A CN102900166B (en) | 2011-07-29 | 2011-07-29 | Buckling restrained brace, as well as joint connecting plate and mounting method thereof |
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| CN102900166A true CN102900166A (en) | 2013-01-30 |
| CN102900166B CN102900166B (en) | 2015-06-10 |
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| CN201110216342.3A Expired - Fee Related CN102900166B (en) | 2011-07-29 | 2011-07-29 | Buckling restrained brace, as well as joint connecting plate and mounting method thereof |
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| CN103174229A (en) * | 2013-03-12 | 2013-06-26 | 同济大学 | Novel compound energy-dissipation and shock-reduction support |
| CN103358098A (en) * | 2013-07-09 | 2013-10-23 | 华南理工大学 | Processing method of effectively improving low cycle fatigue performance of buckling-restrained brace |
| CN104234255A (en) * | 2014-03-04 | 2014-12-24 | 上海大学 | Built-in buckling restrained brace connecting joint |
| CN104234254A (en) * | 2014-09-05 | 2014-12-24 | 湖州市交通工程总公司 | Combined buckling restrained brace and manufacturing process thereof |
| CN105133739A (en) * | 2014-05-29 | 2015-12-09 | 蔡崇兴 | Restraining and diagonal bracing device with inspection windows |
| CN105926764A (en) * | 2016-06-13 | 2016-09-07 | 姚攀峰 | Industrialized pre-processed regenerative structural system and method for constructing same |
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| CN104234254B (en) * | 2014-09-05 | 2016-08-24 | 湖州市交通工程总公司 | A kind of combined type buckling-restrained energy-dissipation and processing technology thereof |
| CN105926764A (en) * | 2016-06-13 | 2016-09-07 | 姚攀峰 | Industrialized pre-processed regenerative structural system and method for constructing same |
| CN105926764B (en) * | 2016-06-13 | 2019-03-22 | 姚攀峰 | A kind of industrialization preprocessing regenerative structural system and its construction method |
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| CN102900166B (en) | 2015-06-10 |
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