CN103711221B - The anti-buckling spacing energy-consumption supporting member of a kind of I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type - Google Patents
The anti-buckling spacing energy-consumption supporting member of a kind of I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type Download PDFInfo
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- CN103711221B CN103711221B CN201310745321.XA CN201310745321A CN103711221B CN 103711221 B CN103711221 B CN 103711221B CN 201310745321 A CN201310745321 A CN 201310745321A CN 103711221 B CN103711221 B CN 103711221B
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Abstract
The anti-buckling spacing energy-consumption supporting member of a kind of I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type, belongs to anti-buckling spacing energy-consumption supporting member technical field.Steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes large section b and surrender active section c, surrender active section c becomes between large section b in two sections local, four wing places that outer constraint steel pipe becomes large section b in the I-shaped steel core section local of correspondence offer stopper slot, the length of stopper slot is a bit larger tham the length that local, cross section becomes large section b, four wings that local, cross section becomes large section b stretch out outside outer constraint steel pipe by stopper slot, I-shaped steel core section sentences 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot in stopper slot.Load-bearing variable-cross-sectisteel steel core power consumption in earlier stage surrender, when deflection reaches the obligatory point of stopper slot, outer constraint steel pipe provides axial rigidity, restraining structure bulk deformation jointly with the rear steel core of surrender, realizes the function of limiting displacement.
Description
Technical field
The invention belongs to anti-buckling spacing energy-consumption supporting member technical field, relate to a kind of novel engineering structures energy dissipation and spacing supporting member, especially a kind of built-in steel core is that variable cross-section is I-shaped, and outer confinement sleeve is the buckling-restrained energy-dissipation component of open flume type butt welding channel-section steel.Load-bearing variable-cross-sectisteel steel core power consumption in earlier stage surrender, when deflection reaches the obligatory point of stopper slot, outer constraint steel pipe provides axial rigidity, restraining structure bulk deformation jointly with the rear steel core of surrender, realizes the function of limiting displacement.
Background technology
Buckling restrained brace is also known as anti-buckling support or BRB (Bucklingrestrainedbrace), product technology develops the Japan in 1973 the earliest, a collection of Japanese scholars at that time successfully have developed wall board type buckling-restrained energy-dissipation the earliest, and has carried out to it tensile compression test adding different non-cohesive material; After 1994 Nian Bei ridge earthquakes, the U.S. also starts to carry out corresponding design studies and vast scale test to putting buckling support system, the simultaneously binding isotherm computational analysis advantage of this support system compared with other support systems.Anti-buckling support by supporting inner core, peripheral constraint component forms, and can be framework or bent structure provides very large anti-side rigidity and bearing capacity, adopts the structural system supported to apply very extensive in building structure.The dilatancy produced when being usually provided with non-cohesive material or suitable gap between the two to discharge and to support inner core pressurized.Outer sleeve and packing material only retrain central layer compressive buckling, make central layer all can enter surrender in tension with by pressure, and thus, the Hysteresis Behavior that anti-buckling constraint supports is excellent.
Traditional curvature-prevention support component has following characteristics, only steel core is connected with structural element, load is born by inner core plates completely, and outer sleeve and packing material only retrain inner core plates compressive buckling to prevent inner core plates buckle in compression, makes inner core plates all can enter surrender in tension with by pressure.Namely only consider central layer one power consumption core, do not consider the axial rigidity contribution of outer constraint sleeve.The anti-buckling support of current research and development mainly improves emphatically its energy dissipation capacity, less to the position-limiting action research of anti-buckling support.Given this, we prepare design one and after steel core power consumption surrender, can utilize a kind of novel curvature-prevention support component of the overall sidesway of axial rigidity limiting structure of outer constraint steel pipe.
Summary of the invention
The present invention, on existing anti-buckling brace foundation, proposes the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of a kind of channel-section steel open flume type, is only to rely on steel core to surrender power consumption for existing anti-buckling support, and does not have the improvement functionally of displacement control device.The rectangular steel tube that outer constraint steel pipe adopts open flume type butt welding channel-section steel to be formed, steel core adopts the stopper slot tabling of the design of I-steel variable cross-section and outer constraint steel pipe, thus is convenient to after steel core surrender, utilize the outer axial rigidity retraining steel pipe to reach spacing target.
For achieving the above object, the present invention adopts following technical scheme:
The anti-buckling spacing energy-consumption supporting member of a kind of I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type, comprise I-shaped steel core and outer constraint steel pipe, I-shaped steel core is positioned at outer constraint steel duct, 2 rectangle light-gauge steel section concrete filled steel tubes are filled in 2 rectangular region that outer constraint steel pipe and I-shaped steel core are formed, it is characterized in that, described I-shaped steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes large section b and surrender active section c, surrender active section c becomes between large section b in two sections local, local, cross section becomes large section b respectively near the two ends of outer constraint steel pipe.Described outer constraint steel pipe forms square-section by the channel-section steel butt welding of two flutings.Four wing places that outer constraint steel pipe becomes large section b in the I-shaped steel core section local of correspondence offer stopper slot, the length of stopper slot is a bit larger tham the length that local, cross section becomes large section b, four wings that local, cross section becomes large section b stretch out outside outer constraint steel pipe by stopper slot, I-shaped steel core section sentences 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot in stopper slot.
The width of described outer constraint steel pipe is greater than I-shaped steel core surrender active section flange width, be less than I-shaped steel core section and become large section flange width, described outer constraint steel pipe waist fluting, stopper slot is 1/12 of steel pipe length apart from the length d of outer constraint steel tube end part, stopper slot length e is 1/6 of outer steel pipe total length, longitudinal grooved region is consistent with I-shaped steel core variable cross-section region, slotting length and steel core section become the range difference of large section, consider tension when comprising the surrender of I-shaped steel core, the command displacement amount of compressive deformation and this displacement-limited with dissipation system of design, require to specify that its ultimate range is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.
When the anti-buckling support of I-shaped variable cross-section is stressed, first I-shaped steel core consumes energy surrender, when distortion after I-shaped steel core surrender acquires a certain degree the constraint of limited groove, outer obligatory point participation is stressed provides axial rigidity, and outer obligatory point rigidity is larger, effectively can limit the sidesway of the rear structural entity of I-shaped steel core surrender, reach spacing effect.
Described I-shaped steel core section sentences 60 ° of slope angle local increasing sections in outer steel pipe stopper slot, until cross section passes outer steel pipe stopper slot, during guarantee tension, steel core and outer fastener for connection safety, utilize the axial rigidity of outer steel pipe to realize limit function.
Described outer constraint steel pipe forms square-section by the channel-section steel butt welding of two flutings, and the width of outer constraint steel pipe is greater than I-shaped steel core surrender active section flange width, is less than the flange width that I-shaped steel core section becomes general goal.
Described I-steel in-core surface mount has non-cohesive material, is filled with non-cohesive material in the gap of outer constraint steel pipe and I-shaped steel core.
According to above technical scheme, compared with prior art the present invention has following characteristics and beneficial effect.
Superior performance: energy dissipation capacity of the present invention is the energy dissipation capacity of steel core, when after I-shaped steel core surrender, deflection reaches the limit of stopper slot, after surrender, I-shaped steel core and outer steel pipe provide axial rigidity jointly, the overall sidesway of limiting structure, takes full advantage of the axial rigidity of outer constraint steel pipe thus;
Draw materials conveniently: the steel wide material sources that the present invention adopts, complete in specifications, it is convenient to buy.
Power transmission is clear and definite: after steel core surrender, and the axial rigidity of outer constraint steel pipe is conducive to the storey sidesway of limiting structure as the additional stiffness of support system, realizes limit function.
The present invention can be widely used in the energy-dissipating and shock-absorbing of building and spacing control.
Accompanying drawing explanation
Fig. 1 is structure side view of the present invention.
Fig. 2 is that Figure 1A-A locates sectional drawing.
Fig. 3 is that Figure 1B-B locates sectional drawing.
The I-shaped steel core of Reference numeral: 1-, 2-retrain steel pipe, 3-rectangle light-gauge steel section concrete filled steel tube, 4-stopper slot outward, 5-fills non-cohesive material, the butt weld of 6-channel-section steel, a-linkage section, b-partial cross section becomes large section, c-surrenders active section, the distance of d-stopper slot distance steel tube end, e-stopper slot length.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples, is as the criterion with claims.
As shown in Figure 1, the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of a kind of channel-section steel open flume type.Comprise I-shaped steel core (1) and outer constraint steel pipe (2), outer constraint steel tube section 300 × 300mm.Described I-shaped steel core (1) comprises linkage section a, local, cross section becomes large section b and surrender active section c.60 ° of slope angle local increasing sections are sentenced, until cross section passes outer steel pipe stopper slot be about 30mm in outer steel pipe stopper slot (4) in described I-shaped steel core (1) cross section.2 rectangular region formed between described power consumption steel core (1) and outer constraint steel pipe (2) fill 2 rectangle light-gauge steel section concrete filled steel tubes.Described outer constraint steel pipe 2 forms square-section by the channel-section steel butt welding of two flutings, the width of outer constraint steel pipe (2) is greater than I-shaped steel core surrender active section flange width and is about 10mm, the flange width being less than I-shaped steel core section change general goal is about 30mm, and the gap between outer constraint steel pipe (2) and I-shaped steel core (1) arranges non-cohesive material (5); Described outer constraint steel pipe (2) waist fluting; Longitudinal grooved position is consistent with steel core variable cross-section region, and stopper slot is 1/12 of steel pipe length apart from the length d of outer steel tube end part, and stopper slot length e is 1/6 of outer steel pipe total length.Slotting length and steel core section become the range difference of large length, consider the command displacement amount of tension, compressive deformation and this displacement-limited with dissipation system of design when comprising steel core surrender, require to specify that its ultimate range is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.Except above-mentioned example, the section form of steel core (1) can also be H-shaped cross section.
As shown in Figure 2, outer constraint steel pipe (2) forms square-section by the channel-section steel butt welding of two flutings.I-shaped steel core (1) variable cross-section place passes outer constraint steel pipe (2) by stopper slot.
As shown in Figure 3, the width of outer constraint steel pipe (2) is greater than I-shaped steel core surrender active section flange width and is about 10mm, and the flange width being less than I-shaped steel core section change general goal is about 30mm.Gap between outer constraint steel pipe (2) and active section steel core (1) is to arrange non-cohesive material layer (5).
The anti-buckling spacing energy-consumption supporting member of variable cross-section of the present invention: external loads is applied to anti-buckling support, first I-shaped steel core (1) bears external load until surrender.Under pressured state, when after steel core (1) surrender, the compressive strain of steel core reaches the limit of pressurized stopper slot (4), namely, when the end touching stopper slot is inwardly compressed in steel core section amplification place, outer constraint steel pipe (2) contributes axial compression resistance rigidity, control structure global displacement under the effect of steel core.Under tension state, when after steel core (1) surrender, the stretcher strain of steel core reaches the limit of tension stopper slot (4), namely, when steel core section amplification place stretches out the end touching stopper slot, outer constraint steel pipe (2) contributes axial extensional rigidity, control structure global displacement under the effect of steel core.Now steel core (1) and outer constraint steel pipe (2) integrally bear external loads jointly.This duty shows the working in reciprocating mode in tension and compression process.
Claims (5)
1. the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type, comprise I-shaped steel core and outer constraint steel pipe, I-shaped steel core is positioned at outer constraint steel duct, 2 rectangle light-gauge steel section concrete filled steel tubes are filled in 2 rectangular region that outer constraint steel pipe and I-shaped steel core are formed, it is characterized in that, described I-shaped steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes large section b and surrender active section c, surrender active section c becomes between large section b in two sections local, local, cross section becomes large section b respectively near the two ends of outer constraint steel pipe, described outer constraint steel pipe forms square-section by the channel-section steel butt welding of two flutings, four wing places that outer constraint steel pipe becomes large section b in the I-shaped steel core section local of correspondence offer stopper slot, the length of stopper slot is a bit larger tham the length that local, cross section becomes large section b, four wings that local, cross section becomes large section b stretch out outside outer constraint steel pipe by stopper slot, I-shaped steel core section sentences 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot in stopper slot.
2. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of a kind of channel-section steel open flume type of claim 1, it is characterized in that, the width of outer constraint steel pipe is greater than I-shaped steel core surrender active section c flange width, is less than the flange width that I-shaped steel core section becomes general goal b.
3. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of a kind of channel-section steel open flume type of claim 1, it is characterized in that, well be connected with outer steel pipe by stopper slot after I-shaped steel core distortion surrender, utilize the axial rigidity of outer steel pipe to realize limit function.
4. the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of a kind of channel-section steel open flume type of claim 1, it is characterized in that, described outer constraint steel pipe two channel-section steel waist offers stopper slot, stopper slot is 1/12 of steel pipe length apart from the length d of outer constraint steel tube end part, and stopper slot length e is 1/6 of outer steel pipe total length.
5. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped variable-cross-sectisteel steel core of a kind of channel-section steel open flume type of claim 1, it is characterized in that, described I-steel in-core surface mount has non-cohesive material, and the fill gaps between outer constraint steel pipe, I-shaped steel core and concrete filled steel tube has non-cohesive material.
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| CN201310745321.XA CN103711221B (en) | 2013-12-30 | 2013-12-30 | The anti-buckling spacing energy-consumption supporting member of a kind of I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type |
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| CN201310745321.XA CN103711221B (en) | 2013-12-30 | 2013-12-30 | The anti-buckling spacing energy-consumption supporting member of a kind of I-shaped variable-cross-sectisteel steel core of channel-section steel open flume type |
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| CN103711221B true CN103711221B (en) | 2016-01-13 |
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| CN105714952B (en) * | 2016-03-03 | 2018-05-15 | 东南大学 | Bamboo shape buckling restrained brace |
| CN108060728A (en) * | 2018-02-05 | 2018-05-22 | 沈阳建筑大学 | A kind of assembled buckling restrained brace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3451328B2 (en) * | 1994-11-30 | 2003-09-29 | 株式会社竹中工務店 | Beam-to-column connection with energy absorption mechanism |
| CN101982624A (en) * | 2010-10-15 | 2011-03-02 | 清华大学 | Buckling-resistant supporting element bound by four square pipes |
| CN201809994U (en) * | 2010-04-02 | 2011-04-27 | 陈云 | Super-elastic buckling-restrained energy-dissipation brace |
| CN201952931U (en) * | 2010-11-19 | 2011-08-31 | 北京工业大学 | Restriction type anti-flexure support of parallel energy-consuming soft steel plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7174680B2 (en) * | 2002-05-29 | 2007-02-13 | Sme Steel Contractors, Inc. | Bearing brace apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3451328B2 (en) * | 1994-11-30 | 2003-09-29 | 株式会社竹中工務店 | Beam-to-column connection with energy absorption mechanism |
| CN201809994U (en) * | 2010-04-02 | 2011-04-27 | 陈云 | Super-elastic buckling-restrained energy-dissipation brace |
| CN101982624A (en) * | 2010-10-15 | 2011-03-02 | 清华大学 | Buckling-resistant supporting element bound by four square pipes |
| CN201952931U (en) * | 2010-11-19 | 2011-08-31 | 北京工业大学 | Restriction type anti-flexure support of parallel energy-consuming soft steel plate |
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