CN102900166B - 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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- CN102900166B CN102900166B CN201110216342.3A CN201110216342A CN102900166B CN 102900166 B CN102900166 B CN 102900166B CN 201110216342 A CN201110216342 A CN 201110216342A CN 102900166 B CN102900166 B CN 102900166B
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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 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 the design process, is particularly positioned at the building of earthquake district occurred frequently, especially should be noted that.Except prevention seismic damage, the design of many buildings also needs to consider wind resistance.For addressing this problem, the component that more external scientific research personnel have not had flexing to occur when having invented pressurized, and they are applied in realization power consumption antidetonation in building structure, in the industry this class A of geometric unitA is called anti-buckling support, buckling restrained brace or Buckling-restrained brace, for sake of convenience, hereinafter buckling restrained brace is referred to as.The mounting means of existing buckling restrained brace mainly comprises following three kinds of modes: (1) pinned connection; (2) bolt connects; (3) end face butt welding.Because the intensity of steel is very high, it just enters state of plastic deformation at elastic compression about 2 ~ 3mm, therefore buckling restrained brace to connect intensity and required precision all very high, engineering practice shows, existing three kinds of connected modes all also exist some problems.Such as, pinned connection merging precision requires high; Time with bolts, junction plate end will expand size, and coarse process will be carried out in surface, and bolt must select the bolt of high strength grade (10.9 grades or more), and therefore cost is higher, usually also will set up junction plate, will promote cost further.And it is a lot of to utilize bolt to connect the factor affecting buckling restrained brace service behaviour, the quality of fit of bolt and connecting hole not easily ensures, bolt needs special torque spanner to tighten etc., both made so to find in test still can skid, these factors are easy to the decline causing buckling restrained brace energy-dissipating and shock-absorbing performance, even lose efficacy; The requirement of mode to precision of end face butt welding is lower, and economy also has more advantage, but research shows, the weld seam vertical with Impact direction easily produces stress and concentrate, and under power effect is disturbed in circulation, easily occur fatigue fracture, reliability is lower.In sum, all there is certain drawback in the syndeton of existing buckling restrained brace and installation side, a kind of new buckling restrained brace product that can thoroughly solve the problem of market in urgent need.
Summary of the invention
The object of the invention is to overcome above-mentioned defect, provide one more easily to install, and the buckling restrained brace of the economy of installing and better reliability.
Buckling restrained brace of the present invention realizes like this, comprise steel core and lateral restraint unit, steel core is by active section, linkage section and changeover portion composition, active section is positioned at lateral restraint unit, surperficial spacer material layer is also provided with between steel core and lateral restraint unit, it is characterized in that steel core at least one end arrange be welded to connect unit, be welded to connect unit and comprise main junction plate, side connects short slab and auxiliary connection board, main junction plate is a part for steel core, side connection short slab and auxiliary connection board are along steel core shaft on the non-butting surface being fixedly installed on main junction plate, side connects short slab part and is positioned at lateral restraint unit, auxiliary connection board extends out to beyond main junction plate at steel core axial direction.
Wherein, described side connects short slab and auxiliary connection board can integrated setting, and form side and connect long slab, side connection long slab extends out to beyond main junction plate at steel core axial direction; Side connects short slab and auxiliary connection board to being welded into one, can also be formed side and connecting long slab, and for the ease of implementing welding, side connects short slab or/and the butt end of auxiliary connection board 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, wait various shape.The concrete structure of lateral restraint unit also can be varied, such as, can be the restraining structure that concrete is formed, and can be the restraining structure that steel concrete is formed, and can also be restraining structure of forming 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 the non-butting surface of main junction plate is arranged connects long slab or/and it can also be a part for steel core in buckling restrained brace that side connects short slab, namely side connects long slab or/and it is structure of steel pole extension externally that side connects short slab, it has a style of one's own, not side is connected long slab or/and side is weldingly fixed on steel core after connecting short slab, this technical scheme decreases weld seam quantity, not only simplifies manufacturing procedure and can also avoid the not good various harmful effects brought of welding quality.
For the ease of installing, adopt split-type structural between the auxiliary connection board that the non-butting surface at least main junction plate side is arranged and main junction plate, during installation, auxiliary connection board is connected short slab, main junction plate and connected node plate and is welded and fixed connected respectively with side.In addition, in addition, the non-butting surface of main junction plate can also arrange limiting plate, limiting plate is connected long slab with the side that main junction plate is preset or auxiliary connection board is arranged on same non-butting surface, limiting plate can be utilized in installation process to coordinate with connected node plate, prevent buckling restrained brace of the present invention from deflecting, welding job is more easily implemented.Main junction plate, or/and the docking end face and also can arrange bevel for welding of auxiliary connection board and connected node plate, to be more conveniently welded and fixed.
In order to ensure structural strength, the each non-butting surface of main junction plate is at least arranged one piece of auxiliary connection board or one piece of side stringer or one piece of side and connect long slab, and the bulk strength of the auxiliary connection board that two of main junction plate non-butting surfaces are arranged, side stringer or side connection long slab should keep identical, to make structure stress balanced, prevent from occurring unstable phenomenon in use procedure.
It should be noted that, in buckling restrained brace of the present invention, linkage unit of the present invention can be adopted in two ends simultaneously, also can only arrange and described be welded to connect unit in one end, the other end adopts existing various linkage unit, the unit that is such as articulated and connected, bolt linkage unit, the bolt linkage unit setting up junction plate or end face butt welding linkage unit etc.During use, utilize and be welded to connect unit and coordinate with existing linkage unit and be connected, can by being welded to connect unit and effectively eliminating the connection of existing linkage unit time the error of generation and gap, make connection procedure more simple and reliable.
Another object of the present invention is to provide connected node plate that is a kind of and the invention described above buckling restrained brace fit applications, it is characterized in that connected node plate being arranged the gap coordinated with junction plate main in buckling restrained brace.According to the difference of junction plate shape main in buckling restrained brace, rectangle, isosceles trapezoid or " V " font that gap can be open in one end.For the ease of implementing welding, the periphery of gap can also arrange bevel for welding.
3rd object of the present invention is the mounting method providing a kind of above-mentioned buckling restrained brace, and it comprises the steps:
(1) according to the real size of buckling restrained brace, on that preset in frame construction or that Site Welding is fixedly installed connected node plate, the position of corresponding main junction plate utilizes instrument on-site cutting to go out corresponding gap, the burr of gap periphery and oxide skin polishing is cleaned out;
(2) the main junction plate of buckling restrained brace is placed in the gap that connected node plate cuts out, behind centering position by spot welding by main junction plate or/and auxiliary connection board and connected node plate are fixed together;
(3) the main junction plate of buckling restrained brace and connected node plate are implemented to be welded and fixed along counterface between the two, again by integrally welded to the auxiliary connection board and connected node plate that are fixedly installed on main junction plate surface, or/and will independently auxiliary connection board and connected node plate and main junction plate integrally welded;
(4) remove welding slag and metal material surface polishing is cleaned out, then carrying out polishing, finally antirust treatment being implemented to bare metallic surface.
Based on above-mentioned mounting method, in step (1), connected node plate also can pre-set gap, again the connected node plate with gap to be welded and fixed in advance or Site Welding is fixedly installed in frame construction, the junction plate of the buckling restrained brace then correspondence processed by step (2) puts into gap, then continues 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, without the surface of matching relationship between the gap of main junction plate and connected node plate.
Buckling restrained brace of the present invention, by steel core at least one end arrange that main junction plate and auxiliary connection board form be welded to connect unit, when can realize being weldingly connected with outer frame structure, the major part bearing of trend of attachment weld and the Impact direction of steel core keep 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, the two fit applications to construction error and mismachining tolerance adaptable, 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, thoroughly can eliminate the harmful effect of alignment error to the energy-dissipating and shock-absorbing performance of buckling restrained brace self, reliably fool proof.
Accompanying drawing explanation
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 is the B-B sectional view two of Fig. 2.
Fig. 6 is the structural representation of frame construction and connected node plate
One of scheme of installation that Fig. 7 is buckling restrained brace of the present invention shown in Fig. 1.
Fig. 8 is the rear elevation of Fig. 7.
Fig. 9 is the scheme of installation two of buckling restrained brace of the present invention shown in Fig. 1.
Figure 10 is the structural representation two of buckling restrained brace of the present invention.
Figure 11 is the structural representation three of buckling restrained brace of the present invention.
Figure 12 is the structural representation four of buckling restrained brace of the present invention.
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 is the welded and installed schematic diagram two of main junction plate and connected node plate.
Figure 18 is the C-C sectional view two of Figure 12.
Figure 19 is the D-D sectional view two of Figure 13.
Figure 20 is the structural representation six of buckling restrained brace of the present invention.
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.
Detailed description of the invention
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 lateral restraint unit 1, the shape of cross section of steel core is " one " font, and lateral restraint unit 1 is made up of Reinforced Concrete Materials.In Fig. 1, shown in a region, part is the active section of buckling restrained brace of the present invention, and b region is linkage section, and linkage section is symmetrically distributed in active section both sides, and the part between active section and linkage section is changeover portion.Steel core two ends linkage section arranges and is welded to connect unit, be welded to connect that unit comprises main junction plate 4, side connects short slab 14, auxiliary connection board 15 and is connected long slab 5 with side, the cross section of main junction plate 4 is in " one " font, and main junction plate 4 is a part for steel core 2, side connection long slab 5 is connected short slab 14 and is axially weldingly fixed on two non-butting surfaces of main junction plate 4 accordingly along steel core 2 respectively with side, and setting is perpendiculared to one another with main junction plate 4, at steel core axial direction, auxiliary connection board 5 extends out to outside main connection 4 plate.In order to prevent unstability, side connect long slab 5 and side connect short slab 14 from changeover portion namely arrange, its part is arranged in lateral restraint unit 1.
When the present invention and steel framework structure 6 welded and installed, as follows operate: (1) as shown in Figure 6, connected node plate 7 is welded and fixed in advance in frame construction 6, according to the real size of buckling restrained brace of the present invention, on connected node plate 7, the position of corresponding main junction plate 4 utilizes cutting torch on-site cutting to go out corresponding gap 8, then the burr of gap 8 periphery and oxide skin polishing is cleaned out; (2) buckling restrained brace of the present invention is lifted, main junction plate 4 is placed in the gap 8 that connected node plate 7 cuts out, side connects long slab 5 and is overlapped on connected node plate 7 on the surface, by spot welding, main junction plate 4 or side is connected long slab 5 together with connected node plate 7 pre-connection behind centering position; (3) as shown in Figure 7, implement to weld with the docking counterface of connected node plate 7 at main junction plate 4, utilize three road weld seams 9,10 and 16 the two to be linked together, then the side being weldingly fixed on main junction plate 4 surface is connected long slab 5 also integrally welded with connected node plate 7.In addition, as shown in Figure 8, at opposite side, auxiliary connection board 15 is connected short slab 14 butt welding with side, and auxiliary connection board 15 is welded and fixed respectively with main junction plate 4 and connected node plate 7 is connected.In order to see clearly, Fig. 7 and Fig. 8 is only described for the welded and installed be welded to connect between unit and connected node plate of buckling restrained brace one end of the present invention, in like manner, the welded and installed of its other end is also like this, as shown in Figure 9, the main junction plate 4 of the other end is by three weld seams 12, 13 to be welded and fixed with the 17 connected node plates 11 be fixedly installed with frame construction 6 oblique upper together with, equally, auxiliary connection board 5 is also connected short slab 14 with side respectively, master adds fishplate bar 4 and connected node plate 11 soldered (not specifically illustrating), realize fully being welded and fixed of buckling restrained brace of the present invention and frame construction 6, (4) remove welding slag and metal material surface polishing is cleaned out, then carrying out polishing, finally antirust treatment being implemented to bare metallic surface, complete whole welded and installed process.
Owing to adopting welded and installed to fix between buckling restrained brace of the present invention and frame construction, therefore have the following advantages: 1) connect with bolt with hinge and compare, adaptable to construction error and mismachining tolerance, simple installation, 2) rough surface process is needed unlike bolt connection, also not by affecting with or without factors such as greasy dirt and mounting torque sizes, better reliability, can guarantee that lateral force frame construction being subject to when earthquake occurs mainly acts 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, without the need to punching, can not reduce intensity of joint board, end also need not therefore enlarged end size, and economy is better, 4) the most important thing is, during traditional docking welded and installed, weld seam is mutually vertical with steel core Impact direction, easy generation along steel core shaft to remaining tensile stress, and weld seam concentrates on a section, formation stress is concentrated, once there are sand holes in weld seam, the genetic defects such as crackle, due to the cause that stress is concentrated, stressed rear defect will amplify damage rapidly 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 arranged along the axis of steel core, identical with the Impact direction of steel core, therefore weld seam is stressed more reasonable, produce along steel core shaft to tensile stress little, stress is concentrated few, butt welded seam defect, initial crack and stress are concentrated insensitive, the reliability of welding is better.
In the present invention, the concrete structure of lateral restraint unit can be varied, except the already mentioned reinforced concrete structure that utilizes forms except lateral restraint unit, concrete structure or other Structure composing lateral restraint unit such as outer steel pipe and concrete combining structure can also be utilized, as long as restraint forces is enough, same effect can be reached.In addition, it should be noted that, in actual applications, in order to ensure to be connected with the effective of connected node plate, the non-butting surface in side of main junction plate also can be arranged more than one piece of auxiliary connection board.Such as shown in Figure 5, main junction plate 4 of the present invention also can be arranged two pieces of sides and connect long slabs 5, another the non-butting surface that it should be noted that corresponding main junction plate 4 is arranged two pieces of sides connect short slabs and two pieces of auxiliary connection board corresponding with it.Arrange one piece to be with the meaning of upside connection long slab, increase the weld seam total length with connected node plate on the one hand, improve bonding strength; On the other hand, in the process implementing welded and installed step (2), main junction plate is placed in gap that connected node plate cuts out, side connects long slab and is overlapped on connected node plate on the surface, the side of more than two pieces or two pieces connects long slab and can effectively prevent main junction plate from deflecting, easier centering position.In addition it is to be noted, in order to ensure stress equalization, side connect long slab 5 and side connect the selection of short slab 14 and auxiliary connection board 15 should be as far as possible identical, the total length of side connection short slab 14 and auxiliary connection board 15 split also should connect long slab 5 with side and keep identical as far as possible.
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, without the surface of matching relationship between the gap of main junction plate and connected node plate.Such as, in Fig. 4, the surface being welded with side connection long slab 5 or auxiliary connection board 15 in main junction plate 4 is the non-butting surface of described main junction plate.Also be like this in follow-up embodiment, repeat no longer one by one.
In this example, to adopt the main junction plate of rectangle in buckling restrained brace, corresponding connected node plate being arranged rectangle gap is that example is described.In actual applications, the shape of main junction plate also can be isosceles trapezoid or the shapes such as " V " font of falling, different according to the main junction plate shape of buckling restrained brace, only needs gap to be arranged to accordingly isosceles trapezoid or falls the shapes such as " V " font.So, buckling restrained brace of the present invention be welded to connect unit when being welded to connect with node unit plate, its weld seam formed mostly and steel core Impact direction keep non-perpendicular state, therefore the tensile stress produced is little, stress is concentrated few, and weld material time stressed around defect can share the stressed of fault location automatically, and therefore the anti-fatigue ability of weld seam is stronger, longer service life, welding quality is more reliable.
In the present invention, the structure of steel core can be varied, 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 pieces of auxiliary connection board 15 and be connected short slab 14 with four pieces of sides, wherein in advance the auxiliary connection board 15 that a non-butting surface of main junction plate 4 is arranged is connected short slab 14 to being welded into one with side, form one piece of knockdown side and connect long slab, and auxiliary connection board 15 is weldingly fixed on the corresponding non-butting surface of main junction plate.
When the buckling restrained brace of the present invention described in this example and the frame construction welded and installed shown in Fig. 6, its step is identical with embodiment one, in this no longer repeated description.
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 connectionless between four pieces and main junction plate 4, independently auxiliary connection board 15.
When the buckling restrained brace of the present invention described in this example and the frame construction welded and installed shown in Fig. 6, compared with method described in embodiment one, need to increase secondary and auxiliary connection board 15 is connected the operation that short slab 14, main junction plate 4 and connected node plate 7 weld with side, all the other installation processes are identical, in this no longer repeated description.
In this routine described technical scheme, the auxiliary connection board of buckling restrained brace of the present invention is all independently arranged, and is welded on side again and connects on the connected node plate of short slab, main junction plate and frame construction during installation to be welded.But in order to reduce site work amount; the technical scheme that auxiliary connection board is all independently arranged generally preferably is not recommended; certainly; during for special circumstances such as in-site installation spatial complexes; also the technical scheme that auxiliary connection board is all independently arranged can be adopted, also in protection scope of the present invention.
Embodiment four
Buckling restrained brace of the present invention as shown in Figure 12, Figure 13, Figure 14 and 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 lateral restraint unit is made up of outer steel pipe 18 and Concrete Filled material 19.As shown in Figure 13 and Figure 15, main junction plate 4 comprises each limit that two angle steel are combined into " one " font, wherein another limit of an angle steel extends to outside main junction plate 4 as side connection long slab 5, another limit of another root angle steel then only extends to lateral restraint unit outside and forms side and connect short slab 14, so that ensure can erection welding smooth in connected node plate.In addition, in order to improve welding quality, two at main junction plate 4 arrange groove respectively for the end of welding, 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 Fig. 6, at this not repeated description.It is to be noted as shown in figure 16, owing to being provided with groove, effectively can improving the welding quality between main junction plate 4 and connected node plate 7, good bonding strength can be ensured.In addition, as shown in figure 17, because the gap on connected node plate 7 is that scene cutting torch cuts out, therefore shape likely not very specification, when space between main junction plate 4 and connected node plate 7 is larger, also can set up supporting plate 18 to ensure the smooth enforcement of welding at dorsal part.Only dock being welded to connect between end face for one of main junction plate 4 and connected node plate 7 in figure to be described, all the other docking end faces and being welded to connect between other main junction plate and connected node plate are also like this, will not enumerate.
Embodiment five
Buckling restrained brace of the present invention as shown in Figure 12, Figure 13, Figure 18 and Figure 19, is with the difference of embodiment four, and steel core 2 is welded to one another by three block plates and forms, and its shape of cross section is " ten " font.As shown in Figure 13 and Figure 19, three block plates of composition steel core, extend to the main junction plate 4 of formation respectively of linkage section, side connects long slab 5 and is connected short slab 14 with side, wherein connection long slab 5 in side is connected short slab 14 and is vertically welded in accordingly respectively on the non-butting surface of main junction plate 4 with side.
This routine described buckling restrained brace is identical with embodiment one with the welded and installed process of frame construction shown in Fig. 6, at this not repeated description.
Embodiment six
Buckling restrained brace of the present invention as shown in Figure 20 and Figure 21, is with the difference of embodiment one, and side connection long slab 5 is connected short slab 14 and is weldingly fixed on the non-butting surface of main junction plate 4 respectively smoothly with side.
When installing with the structure welding of steel framework shown in Fig. 6, as shown in figure 22, its installation process is identical with embodiment one, but the area that reclines connecting long slab 5 and connected node plate 7 due to side is large, therefore not easily deflect after the main junction plate 4 of buckling restrained brace embeds the gap of connected node plate 7, be more conducive to welding procedure.It should be noted that, at opposite side, first butt welding is remained between auxiliary connection board 15 and side connection short slab 14, and then auxiliary connection board 15 and main junction plate 4 and connected node plate 7 are welded together respectively, during welding, auxiliary connection board 15 also connects with side that long slab 5 is equally smooth is arranged on main junction plate 4 and connected node plate 7 surface (specifically accompanying drawing illustrates).
Except there are the various advantages of description in embodiment one, due to side in this routine described buckling restrained brace connect long slab 5, auxiliary connection board 15 to be connected with side short slab 14 respectively smooth be weldingly fixed on the non-butting surface of main junction plate 4, therefore its linkage section takes up room less, to the better adaptability of installing space.
Embodiment seven
Buckling restrained brace of the present invention as shown in figure 23 and figure 24, be with the difference of embodiment six, eachly be welded to connect in unit, two pieces of sides are set and connect long slab 5, corresponding side connects short slab 14 and auxiliary connection board 15 also arranges two pieces respectively, side connection long slab 5 is connected short slab 14 and is weldingly fixed on along steel core shaft to compartment of terrain respectively on two non-butting surfaces of main junction plate 4 with side, during welded and installed, auxiliary connection board 15 is connected short slab 14 pairs of postweldings respectively and is weldingly connected again with main junction plate 4 and connected node plate 7 with side.In addition, its welded and installed process is substantially identical with embodiment one.
This type of technical scheme, added the weld seam total length of buckling restrained brace and connected node plate by ground, therefore 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 is, the shape of main junction plate 4 is isosceles trapezoid.In addition, frame construction 6 is made up of steel concrete, when framing structure 6, anchor structure 21 is utilized to be cast in frame construction 6 by connected node plate 7, before building, connected node plate 7 pre-sets the isosceles trapezoid gap corresponding with main junction plate shape, and the size of gap is slightly larger than the overall size of main junction plate 4.In addition, main junction plate 4 welds welding simultaneously on that non-butting surface that connection long slab 5 in side is set and two limiting plates 24 are set.
When installing fixing between buckling restrained brace and frame construction 6, gap preset by connected node plate 7, therefore the on-the-spot operation can omitting cutting gap, directly assemble between buckling restrained brace lifting and connected node plate 7, its follow-up installation process is identical to step (4) described process with step (2) in embodiment one, in this no longer repeated description.In addition, because map sheet limit, be still connected to example with one end of buckling restrained brace of the present invention and connected node plate and frame construction be described at this, the installation of the other end connects similar with it, and no longer another accompanying drawing is described.
Because main company on arm-tie 4 is provided with two limiting plates 24, in installation process, when main junction plate 4 embeds in gap, limiting plate 24 abuts in the side of connected node plate 7, can effectively prevent 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 for falling other shapes such as " V " font, and only needing gap to be arranged to accordingly corresponding shape coordinates with it, 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 with the difference of embodiment one, and to be provided with described in embodiment one of the present invention one end of steel core is welded to connect unit, and the other end arranges the existing bolt linkage unit 23 that steel plate is formed.
The frame construction 6 of steel as shown in figure 26, connected node plate 7 and connected node plate 11 are weldingly fixed in frame construction 6 in advance, and according to size and the structure of the main junction plate 4 in buckling restrained brace two ends and bolt linkage unit 23, connected node plate 7 offers in advance gap (not specifically illustrating in figure), connected node plate 11 offers in advance connecting through hole (not specifically illustrating in figure).When being fixedly connected with the frame construction 6 of steel, lifting buckling restrained brace, high-strength bolt 22 is first utilized to be connected with the connected node plate 11 that frame construction 6 is fixedly installed by buckling restrained brace, be embedded into until the main junction plate 4 of the buckling restrained brace other end after in the gap on connected node plate 7, high-strength bolt 22 is locked; Then implement to weld with connected node plate 7 counterface at main junction plate 4, three road weld seams 9,10 and 20 are utilized the two to be linked together, then side is connected long slab 5 soldered with connected node plate 7, then auxiliary connection board (not specifically illustrating in figure) is connected short slab (not specifically illustrating in figure), main junction plate 4 and connected node plate 7 with side also integrally welded.Remove welding slag and metal material surface polishing is cleaned out, then carrying out polishing, finally antirust treatment is implemented to bare metallic surface, complete whole welded and installed process.
It should be noted that, this example arranges with one end in buckling restrained brace of the present invention and described is welded to connect unit, the other end adopts existing bolt linkage unit to be that example is described, in practical application, the other end can also adopt other existing linkage unit, the unit that is such as articulated and connected, the bolt linkage unit setting up junction plate or end face butt welding linkage unit etc.During use, utilize and be welded to connect unit and coordinate with existing linkage unit and be connected, can by being welded to connect unit and effectively eliminating the connection of existing linkage unit time the error of generation and gap, make connection procedure more simple and reliable, same effect can be realized.This shows, the applicability of buckling restrained brace of the present invention is very strong, very practical.
Buckling restrained brace of the present invention, by arranging main junction plate at the linkage section of steel core, side connect that short slab and auxiliary connection board form be welded to connect unit, when can realize being weldingly connected with outer frame structure, the bearing of trend of main attachment weld is consistent with the Impact direction of 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, thoroughly can eliminate the harmful effect of alignment error to the energy-dissipating and shock-absorbing performance of buckling restrained brace self, reliably fool proof.
Claims (13)
1. a buckling restrained brace, comprise steel core and lateral restraint unit, steel core is by active section, linkage section and changeover portion composition, active section is positioned at lateral restraint unit, surperficial spacer material layer is also provided with between steel core and lateral restraint unit, it is characterized in that steel core at least one end arrange be welded to connect unit, be welded to connect unit and comprise main junction plate, side connects short slab and auxiliary connection board, main junction plate is a part for steel core, side connection short slab and auxiliary connection board are along steel core shaft on the non-butting surface being fixedly installed on main junction plate, side connects short slab part and is positioned at lateral restraint unit, auxiliary connection board extends out to beyond main junction plate at steel core axial direction.
2. buckling restrained brace according to claim 1, is characterized in that side connects short slab and auxiliary connection board integrated setting, forms side and connects long slab, and side connects long slab and extends out to beyond main junction plate at steel core axial direction.
3. buckling restrained brace according to claim 1, it is characterized in that side connection short slab and auxiliary connection board are to being welded into one, and form side and connect long slab, side connects short slab or/and the butt end of auxiliary connection board arranges bevel for welding.
4. buckling restrained brace according to claim 2, is characterized in that the side that the non-butting surface of main junction plate is arranged connects long slab or/and side connects the part that short slab is steel core in buckling restrained brace.
5. buckling restrained brace according to claim 1, it is characterized in that adopting split-type structural between auxiliary connection board that the non-butting surface at least main junction plate side is arranged and main junction plate, during installation, auxiliary connection board is connected short slab, main junction plate and connected node plate and is welded and fixed connected respectively with side.
6. buckling restrained brace according to claim 1, is characterized in that main junction plate or/and auxiliary connection board is provided with bevel for welding with the end face that docks of connected node plate.
7. the buckling restrained brace according to Claims 2 or 3, each non-butting surface that it is characterized in that main junction plate at least arranges one piece of auxiliary connection board, or one piece of side stringer, or one piece of side connects long slab.
8. buckling restrained brace according to claim 1, it is characterized in that the end shape of main junction plate be rectangle, isosceles trapezoid or fall " V " font.
9. the buckling restrained brace according to Claims 2 or 3, the non-butting surface that it is characterized in that main junction plate arranges limiting plate, and limiting plate is connected long slab with the side that main junction plate is preset or auxiliary connection board is arranged on same non-butting surface.
10. a connected node plate for the buckling restrained brace in claim 1-9 described in arbitrary claim, is characterized in that connected node plate being arranged the gap coordinated with junction plate main in buckling restrained brace.
The connected node plate of 11. buckling restrained braces according to claim 10, is characterized in that the shape of gap is rectangle, isosceles trapezoid or " V " font that one end opens.
The connected node plate of 12. buckling restrained braces according to claim 11, is characterized in that the periphery of gap arranges bevel for welding.
The mounting method of the buckling restrained brace in 13. 1 kinds of claim 1-9 described in arbitrary claim, is characterized in that comprising the steps:
(1) according to the real size of buckling restrained brace, on that preset in frame construction or that Site Welding is fixedly installed connected node plate, the position of corresponding main junction plate utilizes instrument on-site cutting to go out corresponding gap, the burr of gap periphery and oxide skin polishing is cleaned out;
(2) the main junction plate of buckling restrained brace is placed in the gap that connected node plate cuts out, behind centering position by spot welding by main junction plate or/and auxiliary connection board and connected node plate are fixed together;
(3) the main junction plate of buckling restrained brace and connected node plate are implemented to be welded and fixed along counterface between the two, again by integrally welded to the auxiliary connection board and connected node plate that are fixedly installed on main junction plate surface, or/and will independently auxiliary connection board and connected node plate and main junction plate integrally welded;
(4) remove welding slag and metal material surface polishing is cleaned out, then carrying out polishing, finally antirust treatment being implemented to bare metal material surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN102900166A CN102900166A (en) | 2013-01-30 |
| CN102900166B true 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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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103174229B (en) * | 2013-03-12 | 2015-08-19 | 同济大学 | Novel mixing energy-dissipated brace |
| CN103358098B (en) * | 2013-07-09 | 2015-08-26 | 华南理工大学 | A kind of processing method that effectively can improve anti-buckling support low cycle fatigue property |
| CN104234255A (en) * | 2014-03-04 | 2014-12-24 | 上海大学 | Built-in buckling restrained brace connecting joint |
| CN105133739A (en) * | 2014-05-29 | 2015-12-09 | 蔡崇兴 | Restraining and diagonal bracing device with inspection windows |
| 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 |
| 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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| JP2001132112A (en) * | 1999-11-01 | 2001-05-15 | Nkk Corp | Brace and method for manufacturing it |
| JP2001336305A (en) * | 2000-05-31 | 2001-12-07 | Kayaba Ind Co Ltd | Vibration control device |
| CN200971567Y (en) * | 2006-08-15 | 2007-11-07 | 郑兆宏 | Plug-in combined round flexible support |
| CN101672071A (en) * | 2009-09-17 | 2010-03-17 | 同济大学 | Vertical reinforced concrete component-connection node of buckling-restrained brace |
| CN202347682U (en) * | 2011-07-29 | 2012-07-25 | 青岛科而泰环境控制技术有限公司 | Buckling-restrained brace |
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- 2011-07-29 CN CN201110216342.3A patent/CN102900166B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001132112A (en) * | 1999-11-01 | 2001-05-15 | Nkk Corp | Brace and method for manufacturing it |
| JP2001336305A (en) * | 2000-05-31 | 2001-12-07 | Kayaba Ind Co Ltd | Vibration control device |
| CN200971567Y (en) * | 2006-08-15 | 2007-11-07 | 郑兆宏 | Plug-in combined round flexible support |
| CN101672071A (en) * | 2009-09-17 | 2010-03-17 | 同济大学 | Vertical reinforced concrete component-connection node of buckling-restrained brace |
| CN202347682U (en) * | 2011-07-29 | 2012-07-25 | 青岛科而泰环境控制技术有限公司 | Buckling-restrained brace |
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