Embodiment
Below, as each mode of execution of the present invention, specify following binding with reference to accompanying drawing and use ironware: be attached between a pair of object parts that constitute building construction the corresponding energy absorption of relative displacement between performance and these object parts.
[first mode of execution]
Fig. 1 is the stereogram of the binding of expression first embodiment of the invention with the detailed construction of ironware 1, and Fig. 2 is its planimetric map, the side view when Fig. 3 representes from the paper left sides of Fig. 2.Linking with ironware 1 is a steel plate that is formed U-steel, and this U-steel has: OBL web 2; And pair of flanges 3, one and the two ends that are formed on this web 2 squarely are on each long limit.
On web 2,, be formed with a plurality of slit pores 21 with the mode that on the thickness of slab direction of web 2, connects.These slit pores 21 constitute, and become lengthwise towards the width direction B with long side direction A quadrature of web 2.In this mode of execution, the shape of these slit pores 21 becomes rhombus, but not only is defined in rhombus, also can be the rectangular that becomes lengthwise towards width direction B, also can adopt other polygon-shaped, uncertain shape.These slit pores 21 do, under the situation that the width direction B along web 2 observes, separate predetermined distance and break-through is provided with 2, but the break-through on this width direction B is provided with number are not limited only to 2, also can form more than 3.In addition, between a pair of slit pore 21 that adjoins each other along this width direction B, be configured to second linking department 28.Each slit pore 21 does, under the situation that the long side direction A along web 2 observes, separates predetermined distance and arow disposes a plurality of (being 4 in this mode of execution).
In addition, on web 2, on the end positions of long side direction A, be formed with each slit pore 22.These slit pores 22 are compared with each slit pore 21, and opening area is bigger.The width dimensions of the width direction B of these slit pores 22, consistent with the width dimensions at two ends of each slit pore 21 of on width direction B, having arranged 2.In addition, each slit pore 21 is arranged with a plurality of on width direction B, and is relative therewith, and each slit pore 22 forms long hole respectively on width direction B.The shape of these slit pores 22 can be arbitrarily, but in this mode of execution does, the substantial middle of width direction B part comes to a point towards the end of long side direction A, and the size when long side direction A observes is greater than the size of each slit pore 21.Thus, when on web 2, carrying out shock absorption, can fully guarantee the movable area of second linking department 28, even under the situation that the distortion quantitative change of web 2 is big owing to violent earthquake, also can tackle.In addition, slit pore 22 with the edge portion 22a1 of each slit pore 21 in abutting connection with a side, form following shape: almost become the line symmetry with the contour shape of each slit pore 21 that forms almost diamond.
In addition; As stated; Each slit pore 22 and the 22a2 of the edge portion opposed side of the above-mentioned edge 22a1 of portion become the obtuse angle towards the end of long side direction A and come to a point, and these front end 22a3 that come to a point have given size (for example 4mm) and have the smooth shape along width direction B.
And, with the opposed mode of front end 22a3 of the 22a2 of this edge portion, on the middle position of the 22a1 of edge portion, be formed with protuberance 22a4.As the shape of this protuberance 22a1, for example can adopt following shape: from the outstanding length of the 22a1 of edge portion is 5mm, and is 4mm along the width dimensions of width direction B.
The reason that this protuberance 22a4 is set is: when being fixed to 28 welding of second linking department on the object parts, be difficult to be welded to reliably the two ends along long side direction A of second linking department 28 sometimes, because welding is insufficient, therefore possibly peel off from above-mentioned two ends.As this mode of execution, the mode that prolongs with the two ends with each second linking department 28 is provided with each protuberance 22a4, and it is fixing easily to obtain welding more reliably thus.
In addition, making above-mentioned front end 22a3 become the reason of even shape, is in order to match with the front end shape of smooth raised part 22a4.Through adopting this even shape, compare with the situation that does not have the par thus, can obtain the cross-sectional length d of the central part of the portion of setting up 31 significantly
0(with reference to Fig. 2).As a result, can further improve the rigidity of the portion of setting up 31, therefore more preferably.
In addition, each end along width direction B of each slit 21,22 must and be in boundary line between each flange 3 at its two ends from web 2, leave s at interval to web 2 inner face side.That is, the width dimensions equal spacing s that establishes the 2X of portion with above-mentioned folder is left from the inner face side of each flange 3 to web 2 in each end of each slit 21,22.
Through forming each slit pore 21,22, on web 2, be formed with a plurality of damping portion 26 thus with the shape of above-mentioned that kind and configuration.Fig. 4 representes the detail shape of each damping portion 26.
Damping portion 26 has two damping fins 25 by the dotted line among Fig. 4.These damping fins 25 are arranged at the slit 21 of adjacency between a pair of slit 21 of adjacency on the long side direction A or on long side direction A, between 22.Each damping fin 25 is brought into play the power absorption function thus corresponding to the relative displacement of its long side direction A and carry out plastic deformation.These damping fins 25 are provided with 2 continuously along width direction B.The two end part of the width direction B of these damping fins 25 need and be in the boundary line between each flange 3 at its two ends from web 2, leave s at interval to web 2 inner face side.
As stated, each slit pore 21 has almost diamond, so damping fin 25 is along the cross-sectional length d of the central part of width direction B
1Cross-sectional length d less than its two ends
2In addition, between a pair of damping fin 25 that adjoins each other along width direction B, be provided with continuously via second linking department 28.In addition, each second linking department 28 and a pair of raised part 22a4 that is positioned at their two ends along long side direction A links to each other become the standing part to above-mentioned object parts, in this mode of execution, with the prerequisite that is fixed as based on welding, therefore do not form bolt hole.But it is fixed and not only is defined in welding, therefore also can be pre-formed bolt hole, fixes through fixed components such as bolts.
Above-mentioned interval s is with respect to the cross-sectional length d at damping fin 25 two end part
2Also can satisfy following (1) formula.
In addition, about the shape of damping fin 25, the cross-sectional length d of damping fin 25 central parts
1Cross-sectional length d with two end part
2Between relation also can satisfy following (2) formula.
L: the length along width direction B of damping fin 25 (mm)
d
1: the cross-sectional length (mm) of damping fin 25 central parts
d
2: the cross-sectional length (mm) at damping fin 25 two end part
Shape at damping fin 25 satisfies under the situation of above-mentioned (2) formula, the almost side by side crooked shear yielding in the central part of damping fin 25 and two end part, and the plastic deformation zone enlarges to the whole zone of damping fin 25, and the amount of energy of damping fin 25 increases.In addition, because the expansion of the plastic deformation of damping fin 25 zone, so the yield strength that can also suppress after the plasticization rises.
As shown in Figure 2, the binding of this mode of execution is provided with a pair of architrave portion 32 with ironware 1.These architrave portions 32 are made up of the position near flange 3 of flange 3 and web 2.At this, the position near flange 3 of so-called web 2, the zone of being represented by interval s till being meant from the end of the width direction B of web 2 to the end of slit pore 21, promptly folder is established the 2X of portion.That is, this architrave portion 32 is configured in end from the width direction B of damping portion 26 to comprising the zone of flange 3 till interior.
In addition, the binding of this mode of execution with ironware 1 on, on its web 2, dispose a pair of portion 31 that sets up.These set up portion 31 and on web 2, are configured to, and are erected between the above-mentioned a pair of architrave portion 32 in each end of long side direction A.These set up portion 31, along width direction B and narrow and smallization of substantial middle part guaranteed the working zone of damping fin 25 along long side direction A thus.In addition, about this border of setting up portion 31 and architrave portion 32, in following explanation, be defined as for ease, compare with the straight line of expression interval s, flange 3 sides are that the center side of architrave portion 32, width direction B is the portion of setting up 31.
In addition, constitute linking damping portion 26 with ironware 1, set up portion 31, architrave portion 32, all a steel plate is processed and disposed, is not to make unit independently respectively and binding afterwards.
As shown in Figure 1, on each flange 3, separate uniformly-spaced, be formed with a plurality of (being 4 in this mode of execution) interior threaded hole 3a with the mode that on its thickness of slab direction, connects along its long side direction A.In these interior threaded holes 3a, screw togather through flange 3 and will link the fixed component (self-drilling screw of stating for example 57) when being fixed on the object parts with ironware 1.In addition, in the present embodiment, the installation of carrying out each flange 3 by self-drilling screw 57, but be not limited only to this structure, also can fix by welding.
In addition, as shown in Figure 3, the shape of the flange 3 of this mode of execution adopts the shape that the lateral margin of steel plate is crooked, but in addition, for example also can become under the situation of observing with the sight line of this figure, the T word shape vertical with respect to web 2.
State in the use under the situation of binding with ironware 1 of such structure, be installed on the object parts that are used for the absorbed oscillation energy and use.Particularly, with each flange 3 as first linking department, will be as above-mentioned between the slit 21 of adjacency on the width direction B as second linking department 28, these first linking departments and second linking department 28 are respectively installed on the object parts.
That is, will link, the object parts of second linking department 28 with the opposing party will be linked as each flange 3 of above-mentioned first linking department and a side object parts.
Fig. 5, Fig. 6 represent through linking with ironware 1 having carried out the example that links between a pair of object parts.In this example, a side object parts are U-steel 169, and the opposing party's object parts are the steel pipe 92 that links with stone bolt 91.
Below, the assembling of the binding structure of explanatory drawing 5, Fig. 6.
At first, steel pipe 92 is sandwiched a pair of binding with between the ironware 1, and on each second linking department 28 for example through the welding etc. fix.
Then, make the parts of combination as described above, under by the state in the U-steel 169, fix by a plurality of self-drilling screws 57.
At last, stone bolt 91 is inserted led in steel pipe 92, and be screwed to the upper and lower end butt with steel pipe 92, be combined into above-mentioned binding structure thus from the nut 105 that makes up and down of this stone bolt 91.
In having the power absorption structure of said structure, above-mentioned object parts are equivalent to the steel pipe 92 and U-steel 169 with stone bolt 91 bindings.That is, for example be applied at this U-steel 169 under the situation of post parts etc. of slim Light Gauge Steel structure such as various building constructions, steel house etc., as the component axial C displacement of stone bolt 91 in figure of a side object parts.As a result, the binding that is clamped between these object parts (stone bolt 91, U-steel 169) is with second linking department 28 of ironware 1, and also along component axial C and load has shearing stress, also same load has moment of flexure.
As an example that links with the stress vector distribution of ironware 1, the vector of enumerating that kind shown in Figure 7 distributes.On each flange 3 as first linking department, load has the stress σ along long side direction A shown in this Fig
A, so 32 loads of architrave portion have this stress σ
AIn addition, for second linking department 28, long side direction A in the drawings goes up load has stress σ
BLinked with ironware 1 load this stress σ
A, σ
BThe result, the portion's of setting up 31 loads are had stress σ
CIn addition, based on stress σ
A, σ
B, this damping fin 25 itself is out of shape significantly, therefore on the damping fin 25 except moment of flexure and shearing force, also act on stress σ arranged
DThrough this stress σ
DEffect, on damping fin 25, produce tensile stress.
When load has stress σ
A, σ
BThe time, at first, each damping fin 25 bears moment of flexure and shearing force and surrenders.Through making each slit pore 21 towards width direction B major diameterization, thus corresponding to the relative displacement between each object parts, damping fin 25 can be along the crooked shear yielding of relative displacement direction (long side direction A too).In addition, when in the relative displacement that produces repeatedly between each object parts along long side direction A, corresponding, each damping fin 25 plasticization, the result realizes the power absorption based on each damping fin 25.When the amount of plastic deformation of each damping fin 25 increases, on each damping fin 25, except moment of flexure and shearing force, also begin to produce above-mentioned tensile force (with σ
DRightabout stress).
In this mode of execution, be provided with a pair of portion 31 that sets up, so the tensile stress that produces on each damping fin 25, act on the portion that respectively sets up 31 via each architrave portion 32.These set up portion 31 has and stress σ
CSuitable resistivity therefore can be by the tensile stress that produces on the portion's of setting up 31 burden damping fins 25.That is the width dimensions that, can prevent to link with the two ends (setting up portion 31) of the long side direction A of ironware 1 dwindles.
In addition, about the cross-sectional length d of the central part of the portion of setting up 31
0(with reference to Fig. 2) also can adopt and satisfy the such d of following (3) formula
0Value.But, in this mode of execution, will not set up the cross-sectional length d of the central part of portion 31
0Especially only for scope due to following (3) formula.
d
0: the cross-sectional length (mm) of setting up the central part of portion 31
E: the distance (mm) till from the end of the damping portion 26 of the end positions that is in long side direction A to the center of the central cross-section of the portion of setting up 31
N: along the hop count (n=5 under the situation of Fig. 7) of the continuous damping fin 25 that is provided with of long side direction A
T: link thickness of slab (mm) with ironware 1
Z
p: the plastic section modulus (mm of architrave portion 32
3)
Set the cross-sectional length d of the central part of the portion of setting up 31 through the mode of above-mentioned to satisfy (3) formula
0, set up portion 31 thus and can before architrave portion 32, not damage, can stably bear the tensile stress that produces on the damping fin 25.In addition, if will set up the cross-sectional length d of the central part of portion 31
0Be set at the cross-sectional length d of the central part of damping fin 25
1More than 1.5 times, then set up portion 31 and can not rupture and can stably bear above-mentioned stress.In addition, from damping fin 25 to the portion of setting up till 31 apart from e, get final product more than being set at maximum value the amount of plastic deformation of the long side direction A of damping fin 25 imaginations.
Binding when Fig. 8 A representes to suppose not have the portion 31 of setting up is with ironware 1.In this case, as shown in the drawing, when load has above-mentioned stress σ
A, σ
BThe time, can not be supported in the stress σ that produces on the damping fin 25 through the portion of setting up 31
DAs a result, damping fin 25 shrinks on width direction B, shown in Fig. 8 B, constitutes the shaped steel D direction in figure that links with ironware 1 and carries out being out of shape outside the face.
On the other hand, in this mode of execution that is provided with the portion of setting up 31, this outer distortion can be suppressed, energy can be stably absorbed through damping fin 25.
In addition, the binding ironware 1 according to present embodiment possesses each architrave portion 32 as described above.Especially, these architrave portions 32 need transmit stress to the portion of setting up 31, therefore need have sufficient rigidity and yield strength.In this, this architrave portion 32 constitutes and comprises flange 3.That is, have a little zone for this architrave portion 32 among Fig. 9 A, it becomes the Stress Transfer path, but owing to there is flange 3, therefore can improve second moment of area, can improve the flexural rigidity and the plastic section modulus of architrave portion 32 itself.
With respect to this, in architrave portion 32, be not formed with in the such mode of Fig. 9 B of flange 3, constitute flat board by the Stress Transfer path of an expression, can not fully guarantee flexural rigidity and bend yield strength noted.When flexural rigidity and bend yield strength noted are low, should be expended in the bending deflection of architrave portion 32 to the stress that the portion of setting up 31 transmits, significantly impaired to the Stress Transfer of the portion of setting up 31.In this case,, and produce the needs of further strengthening the rigidity of architrave portion 32, make workload and can become excessive in order to ensure the diastrophic above-mentioned Stress Transfer path that is used to suppress architrave portion 32.
Figure 10 representes that architrave portion 32 comprises the situation of flange 3 (situation of this mode of execution shown in Fig. 9 A) and do not comprise under the situation (situation of the comparative example shown in Fig. 9 B) of flange 3 ratio between the theoretical value of the amount of power loss that the theoretical value of each rigidity of architrave portion 32 (flexural rigidity, torsional rigid) and the elastic bending deflection of architrave portion 32 cause.The longitudinal axis is represented this ratio, and transverse axis is represented the leave value that apart from s obtain of the flange width ho of architrave portion 32 divided by architrave portion 32.Figure 10 represent to make leave certain and make flange width ho be changed to the result when multiple apart from s.The value of the transverse axis of Figure 10 is 0 situation, expression architrave portion 32 non-lipped situation, the longitudinal axis with it as reference value (=1).
Can know that according to Figure 10 the flange width ho of architrave portion 32 is big more, then the elastic bending rigidity of architrave portion 32 and elastic torsion rigidity all become big more.Thus, the resiliently deformable of architrave portion 32 can be suppressed, stable Stress Transfer can be carried out.In addition, elastic bending deflection and elastic torsion distortion through suppressing architrave portion 32 can make concentration of plastic deformation in damping portion 25 thus.As a result, can carry out the power absorption of damping portion 25 efficiently.Shown in figure 10, for example the flange width ho through architrave portion 32 is set to 1.5 times apart from s that leave of architrave portion 32, and the loss amount of the power absorption that can the elastic bending deflection owing to this architrave portion 32 be produced thus reduces about 40%.
The flange width ho of architrave portion 32 is big more, and then the flexural rigidity of architrave portion 32 and torsional rigid are big more, and the energy absorption that links with ironware 1 also improves more.On the other hand; In order architrave portion 32 to be installed to the lip part 102 of U-steel 169; And in limit as a result the width ho of flange 3; When further considering as damper, if 1.5 ~ 2.0 times apart from s that leave that flange width ho is set at architrave portion 32 then can be realized stable Stress Transfer with the Economy of steel plate.
The binding of this mode of execution that possesses above-mentioned architrave portion 32 with ironware 1 in, through the architrave portion 32 with flange 3 being set in steel plate, can take into account power absorption and Stress Transfer mechanism through a steel plate thus at damper.As a result, can reduce manufacturing workload, the cost of this binding, and can improve the flexural rigidity and the torsional rigid of architrave portion 32, can also increase and link with the amount of energy of ironware 1 own with ironware 1.
And, constitute the binding of this mode of execution with the damping portion 26 of ironware 1, set up portion 31, architrave portion 32, all a steel plate is processed and is disposed, not with respectively independently the unit engage afterwards.Therefore, need each parts not engaged or weld, can realize that the burden of making workload alleviates, the inhibition of cost of material.
In addition, in this mode of execution, s at interval must be left from flange 3 in each end of the width direction B of slit 21,22.Thus, can improve as the rigidity that links with ironware 1, below, verify for this rigidity raising, therefore describe.
Figure 11 A and 11B represent to be used for test body that the effect that has or not s (folder is established the 2X of portion) at interval to be brought is verified.Figure 11 A representes not have the test body 121 between the shear zone, and Figure 11 B representes to have the test body 122 between the shear zone.For these test bodies 121,122, carried out controlling its right ends and the test of E direction load repeated load in figure.As a result, on each test body 121,122, produce shearing stress and moment of flexure such shown in Figure 11 A, Figure 11 B.
Then, for this load repeated load respectively test body 121,122, measured initial rigidity respectively.The amount of deformation δ of E direction in figure according to test body 121,122
dAnd the relation between the P/Py is obtained this initial rigidity.According to the load p of actual loading on these test bodies 121,122 and the yield load Py of this test body 121,122, obtain this P/Py.
Figure 12 representes to have the amount of deformation δ of the test body 122 of s at interval
d(mm) for transverse axis, be the chart of the longitudinal axis with P/Py.Hence one can see that, and P/Py is change in surpassing ± 1.0 scope, and amount of deformation δ
dBe to the maximum about 7mm.In addition, can know, depict the bigger hysteresis loop of area, obtain bigger hysteresis decay according to this Figure 12.Based on the tendency of this Figure 12, and, obtain initial rigidity (kN/mm) based on the initial angle of elevation of hysteresis loop.
Obtain the result of initial rigidity based on this method, not having the initial rigidity of the test body 121 of interval s is 37.5 (kN/mm), and on the other hand, having at interval, the initial rigidity of the test body 122 of s is 75.0 (kN/mm).That is, confirmed following situation: have the initial rigidity of the test body 122 of interval s to compare, risen 2 times with the test body 121 that does not have interval s.Therefore, through s at interval is set, can further improve the rigidity that links with ironware 1.
[second mode of execution]
Figure 13 is the stereogram of the binding of expression second embodiment of the invention with the detailed construction of ironware 301.In following explanation, be that the center describes with difference with above-mentioned first mode of execution, use same-sign and omit its explanation for other identical constituting components.
The binding of this mode of execution uses ironware 301 to do, with respect to the shape of a pair of slit pore 22 of above-mentioned first mode of execution, a part is different.That is, shown in figure 13, in the slit pore 22A of this mode of execution, do not form raised part 22a4 at the above-mentioned edge 22a1 of portion, the central 22A4 of the 22a1 of edge portion comes to a point fully.In addition, the 22a2 of edge portion does not form smooth above-mentioned front end 22a3 yet, and the central 22A3 of the 22a2 of edge portion comes to a point fully.
The difference of slit pore 22 of slit pore 22A and above-mentioned first mode of execution of this mode of execution is described with reference to Figure 14.In addition, the slit pore 22 of above-mentioned first mode of execution of Figure 14 (a) expression, Figure 14 (b) representes the slit pore 22A of this mode of execution.
Under the situation of the slit pore 22 shown in Figure 14 (a), the reliable welding that can access second linking department 28 is fixed and is guaranteed significantly cross-sectional length d
0And the rigidity of the portion that sets up 31 that realizes is strengthened.
On the other hand, under the situation of the slit pore 22A shown in Figure 14 (b), raised part 22a4 and smooth above-mentioned front end 22a3 are not corresponding with having, and can guarantee the amount of deformation of each damping portion 26 biglyyer.Promptly; Be made as under the situation of St2 at the amount of deformation of the binding that the binding of above-mentioned first mode of execution is made as St1, this mode of execution with the amount of deformation of ironware 1 with ironware 301; St2>St1, link and can bring into play higher energy absorption with ironware 301.In addition, under the situation of this mode of execution, carry out the fixing of second linking department 28 through bolt, then can not produce the problem of weldability as long as replace possessing raised part 22a4.
[the 3rd mode of execution]
Figure 15 is the local amplification stereogram of the binding of third embodiment of the invention with the flange 3A of ironware 401.In following explanation, be that the center describes with difference with above-mentioned first mode of execution, use same-sign and omit its explanation for other identical constituting components.
In this mode of execution,, be formed with the reflex part 39 that its front end is turned back to the inboard as flange 3A.Through forming this reflex part 39, can increase the essence thickness of slab of flange 3A.As a result, can further improve the flexural rigidity of architrave portion 32.In addition, through forming this reflex part 39, toppling in the time of can also preventing to screw togather self-drilling screw 40 can also improve application property.More specifically, with the external lateral portion of perforation flange 3A and reflex part 39 both sides' mode, be pre-formed interior threaded hole 3a.And, with flange 3A to the object parts fixedly the time, screw togather self-drilling screw 40 to the both sides of two interior threaded hole 3a, self-drilling screw 40 by 2 supports, therefore can prevent toppling over of self-drilling screw 40 on its long side direction thus.
[the 4th mode of execution]
Figure 16 is the stereogram of the binding of four embodiment of the invention with ironware 501.In following explanation, be that the center describes with difference with above-mentioned first mode of execution, use same-sign and omit its explanation for other identical constituting components.
The binding of present embodiment with ironware 501 does, replaces using U-steel, and such as shown in figure 16, adopting the cross section is rectangular-shaped shaped steel.Promptly; The binding of this mode of execution uses ironware 501 to do; Have a pair of binding of in above-mentioned first mode of execution, explaining with ironware 1 so that these link the shape that the mode of docking each other with the edge portion of each flange 3 of ironware 1 connects; Being under the situation of observing in the vertical cross section of long side direction A, become rectangular-shaped shaped steel with the direction of relative displacement.
Based on this embodiment, can access and the same action effect of above-mentioned first embodiment.And, based on this embodiment, replace installing at twice the situation of two bindings with ironware 1, and can binding of once mounting with ironware 501, so application property is good.And, never need carry out two bindings and consider that with the contraposition this point between the ironware 1 application property is also good.
Furthermore, with respect to reversing of the object parts that link with second linking department 28, can bring into play higher resistivity.
As the material of the binding of in first of above explanation ~ the 4th mode of execution, explaining, preferably adopt so-called low-alloy steel product (TRIP steel) with ironware 1,301,401,501.This TRIP steel is following low-alloy steel product: the austenite phase of residual high carbon concentration intentionally in the steel when normal temperature; Carry out martensitic phase transformation mutually through austenite, bring into play the phase change induction plasticity effect (TRIP effect) that demonstrates high tenacity and extend performance greatly thus.As this TRIP steel, the steel below for example can illustration: make through hot rolling, its chemical composition is that all with weight %, C is 10.5 * 10
-2, Si is 139.3 * 10
-2, Mn is 137 * 10
-2, P is 9 * 10
-3, S is 1 * 10
-3, Ni is 1 * 10
-3, Cr is 20 * 10
-3, in addition, the principal phase of crystal texture is that ferrite, second is formed by bainite and retained austenite.Owing to be low-alloy, weldability is also good, and the weight % of elements such as the Cr of high price, Ni, Mn is also lower, therefore can make binding as the building damper with phase change induction plasticity more at an easy rate with ironware 1,301,401,501.
Shown in figure 17, the yield strength of TRIP steel is 430N/mm
2More than, yield strength is 130N/mm with the long-pending of elongation
2More than.The long-pending threshold value of this yield strength and yield strength and elongation; All use in the past building shock damper data (number of samples n=51749), and be set at value above 95.5% confidence upper limit value of these data with the high yield strength steel of middle and high yield strength of steel plate and energy absorption most excellent.Building shock damper in the past can not satisfy above-mentioned two threshold values simultaneously with steel plate (high yield strength steel, extremely low yield point steel, low-yield steel), therefore compares with steel plate with existing building shock damper, can bring into play high tenacity and macro-energy uptake.
That is, further miniaturization (reductionization of steel plate amount), further energization uptake are compared in binding with shearing damp device in the past with ironware 1,301,401,501.
In addition; Compare with the austenite stainless steel rod in the past of developing, having the TRIP effect as the energy absorbing member in the shock-proof device; For high-yield strength and be low-alloy; And also do not worry and carbon steel between galvanic corrosion, therefore also help miniaturization, the manufacture cost of power absorption portion 49 significantly to cut down and corrosion resistance improves.
In addition, be 590N/mm in tensile strength
2In the above TRIP steel plate (number of samples n=495), the mean value of yield strength is 478N/mm
2, yield strength is 175N/mm with the long-pending mean value of elongation
268.3% confidence lower limit value of the statistics of this TRIP steel is that yield strength is 463N/mm
2, yield strength is 164N/mm with the long-pending of elongation
2, in addition, 95.5% confidence lower limit value is that yield strength is 448N/mm
2, yield strength is 152N/mm with the long-pending of elongation
2, and 99.7% confidence lower limit value is that yield strength is 433N/mm
2, yield strength is 141N/mm with the long-pending of elongation
2Therefore, be 590N/mm for tensile strength
2More than, have the TRIP steel of phase change induction plasticity, steel are not implemented special processing, operation, just can satisfy preferred important document, be that yield strength is 430N/mm
2More than and yield strength and elongation long-pending be 130N/mm
2More than.
For example, shown in figure 18, binding has yield strength (stress) and elongation (strain) characteristic bigger than high yield strength steel with ironware 1.
That kind as described above as the raw material that links with ironware 1,301,401,501, has phase change induction plasticity and yield strength is 430N/mm using
2Above 700N/mm
2Below and the long-pending of this yield strength and elongation be 130N/mm
2Above 250N/mm
2Below the situation of TRIP steel under, the amount of energy that can make per unit volume can improve energy absorption greater than in the past extremely low yield point steel, high yield strength steel.And,, therefore can improve anti-be full of cracks and produce characteristic and anti-be full of cracks developing characteristics, and can improve weldability owing to use TRIP steel with self-inflicted injury muting function.
In addition, as above-mentioned yield strength, more preferably 440N/mm
2Above 650N/mm
2Below, most preferably be 450N/mm
2Above 600N/mm
2Below.
Equally, amass as above-mentioned yield strength and elongation are, more preferably 145N/mm
2Above 240N/mm
2Below, most preferably be 160N/mm
2Above 230N/mm
2Below.
The CLV ceiling limit value of the above-mentioned yield strength of TRIP steel is made as 700N/mm
2, and will be made as 250N/mm with the long-pending relevant CLV ceiling limit value of yield strength and elongation
2, it the reasons are as follows said.That is, under the situation of using the TRIP steel that surpasses these CLV ceiling limit values, the deviation of characteristic increases, and becomes and makes difficulty.And, being difficult to keep and linking with ironware and this binding of installation with the strength balance between the object parts of ironware, the result can't carry out the design of suitable structure.According to this reason, stipulated above-mentioned CLV ceiling limit value.
And, under situation about having formed on the surface that links with ironware 1,301,401,501 based on the reinforced layer of galvanizing by dipping or electrogalvanizing or electro-coating, can be through age hardening increase yield ratio, and the rising of the yield strength after can suppressing to surrender.And, can also obtain anticorrosion ability extraly, therefore can access the more long lifetime.In addition, can handle to wait through plating and improve yield strength, therefore can keep with plate yield strength same when handling in reduce the steel plate use amount, can realize further miniaturization, lightweight.
Embodiment
Below, various embodiments of the present invention are described.
[embodiment 1]
In present embodiment 1, the binding shape of ironware and the influence that material produces amount of energy have been investigated.That is, prepared: (a) shown in figure 19, have shape that no above-mentioned folder establishes the 2X of portion and, promptly link accessory 500 comparative example of non-TRIP steel (precipitation strength steel) as its raw material; And (b) be applied in the present invention's structure of having explained among Fig. 1 and with the present embodiment of TRIP steel, promptly above-mentioned binding accessory 1 as its raw material.
TRIP steel as the raw material of the binding accessory 1 of present embodiment is have phase change induction plasticity, and yield strength to be 430N/mm
2Above 700N/mm
2Below, and this yield strength is 130N/mm with the long-pending of elongation
2Above 250N/mm
2Below.In addition, roughly the same as grade and the foregoing description of the tensile strength (yield strength) of the binding accessory 500 of comparative example, but the amassing less than embodiment 1 of yield strength and elongation.
The result that Figure 20 (a) and Figure 20 (b) expression has carried out increasing progressively repeatedly test respectively to these comparative examples and present embodiment.In addition, the test result of Figure 20 (a) expression comparative example, the test result of Figure 20 (b) expression present embodiment.
As contrast Figure 20 (a) and Figure 20 (b) can know, in the present embodiment shown in Figure 20 (b), load-deflection curve is depicted the bigger hysteresis loop of area, and energy absorption improves.In addition; The gross area at the ring that will describe repeatedly is calculated as under the situation of cumlative energy uptake; Confirmed following situation: the binding accessory 1 of present embodiment is compared with the binding accessory 500 of comparative example, and it is 2.0 times that rigidity increases, and the amount of energy increase is 4.1 times.As shape and the effect that multiplies each other of using the TRIP steel as raw material combination, and obtain this significantly performance raising based on binding accessory 1.
[embodiment 2]
In present embodiment 2, investigated of the influence of above-mentioned reinforced layer to amount of energy.That is, prepared: the above-mentioned binding accessory of in Fig. 1, having explained 1 is implemented that hot dipping is handled and the present embodiment that forms above-mentioned reinforced layer; With the comparative example that does not form above-mentioned reinforced layer on the above-mentioned binding accessory of in Fig. 1, having explained 1.
The result that Figure 21 representes these comparative examples and present embodiment have been carried out respectively the low cycle fatigue test is a load-deflection curve.In this Figure 21, the resume of grey are represented present embodiment, and the resume of black are represented comparative example.
The result of low cycle fatigue test, confirmed following situation: no matter implemented which kind of processing that galvanizing by dipping processing, electroplating processes, electro-coating are handled, the value of yield strength, yield ratio (YR), yield strength * elongation is all greater than comparative example.Particularly, confirmed following situation: the binding accessory 1 of present embodiment is compared with comparative example, and amount of energy increases to 1.4 times.As based on the shape that links accessory 1, use the TRIP steel as the raw material and the effect that multiplies each other that this three's of reinforced layer combination is set, improve and obtain this further performance.
In above each mode of execution, put down in writing the best formation of being used for embodiment of the present invention, method etc., but the present invention not only is defined in this.That is, the present invention is in the scope that does not break away from technological thought and purpose, and those skilled in the art can implement various distortion to each above-mentioned mode of execution on shape, material, quantity and other detailed formations.
The industry utilizability
Based on the present invention, a kind of binding ironware can be provided, can come the outer rigidity of raising face, flexural rigidity and EAC through extremely simple structure.
The explanation of symbol:
1, ironware is used in 301,401,501 bindings
2 webs
The 2X folder is established portion
3,3A flange
21,22,22A slit pore
25 damping fins
26 damping portions
28 second linking departments
31 set up portion
32 architrave portions
57 self-drilling screws
91 stone bolt
92 steel pipes
105 nuts
169 U-steels