CN103711221A - Box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component - Google Patents
Box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component Download PDFInfo
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- CN103711221A CN103711221A CN201310745321.XA CN201310745321A CN103711221A CN 103711221 A CN103711221 A CN 103711221A CN 201310745321 A CN201310745321 A CN 201310745321A CN 103711221 A CN103711221 A CN 103711221A
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Abstract
The invention discloses a box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component and belongs to the technical field of buckling-prevention limiting and energy-consumption supporting components. Connection segments a, cross section local enlarging sections b and a buckling working section c are sequentially arranged from the two ends of a steel core to the middle of the steel core. The buckling working section c is located between the two cross section local enlarging sections b, and four wing positions, corresponding to the cross section local enlarging sections b of the H-shaped steel core, of an outer constraint steel pipe are provided with limiting grooves. The length of the limiting grooves is slightly larger than the length of the cross section local enlarging sections b, and four wings of the cross section local enlarging sections b extend out of the outer constraint steel pipe through the limiting grooves, the cross section of the H-shaped steel core is locally enlarged at the limiting grooves with the slope angle of 60 degrees till the cross section penetrates out of the limiting grooves of the outer constraint steel pipe. In the early stage of load bearing, the variable-cross-section steel core consumes energy and buckles, when deformation reaches the constrained point of the limiting grooves, the outer constraint steel pipe and the buckled steel core commonly provide axial rigidity, the constraint structure is integrally deformed, and the function of limiting displacement is achieved.
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 member of open flume type butt welding channel-section steel.Variable cross-section steel core power consumption surrender in load-bearing early stage, when deflection reaches the obligatory point of stopper slot, after outer constraint steel pipe and surrender, steel core provides axial rigidity jointly, and restraining structure bulk deformation is realized the function of limiting displacement.
Background technology
Buckling restrained brace claims again anti-buckling support or BRB (Buckling restrained brace), product technology develops the earliest in the Japan of 1973, a collection of Japanese scholars at that time been has successfully has been researched and developed wall board type buckling-restrained energy-dissipation the earliest, and it has been carried out adding the tension and compression test of different non-cohesive materials; After 1994 Nian Bei ridge earthquakes, the U.S. also starts to carry out the test of corresponding design studies and vast scale to putting buckling support system, binding isotherm computational analysis simultaneously this support system compared with the advantage of other support systems.Anti-buckling support by supporting inner core, peripheral constraint component forms, and can be framework or bent structure very large anti-side rigidity and bearing capacity is provided, and adopts the structural system supporting in building structure, to apply very extensive.Conventionally be provided with the dilatancy being produced when inner core pressurized is supported to discharge in non-cohesive material or suitable gap between the two.Outer sleeve and packing material only retrain central layer pressurized flexing, make central layer in tension and depressed all can enter surrender, thereby the Hysteresis Behavior that anti-buckling constraint is supported are good.
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 pressurized flexing to prevent inner core plates pressurized unstability, makes inner core plates in tension and depressed all can enter surrender.Only consider power consumption core of central layer, do not consider the axial rigidity contribution of outer constraint sleeve.The anti-buckling support of research and development at present mainly improves emphatically its energy dissipation capacity, less to the position-limiting action research of anti-buckling support.Given this, we prepare to design a kind of can power consumption after surrender at steel core, utilize a kind of novel curvature-prevention support component of the axial rigidity limiting structure integral body sidesway 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-section steel core of a kind of channel-section steel open flume type, is only to rely on steel core surrender power consumption for existing anti-buckling support, and there is no the improvement in the function of displacement control device.The rectangular steel tube that outer constraint steel pipe adopts open flume type butt welding channel-section steel to form, steel core adopts the stopper slot tabling of the design of I-steel variable cross-section and outer constraint steel pipe, thereby is convenient to utilize the outer axial rigidity that retrains steel pipe to reach spacing target after steel core surrender.
For achieving the above object, the present invention adopts following technical scheme:
The anti-buckling spacing energy-consumption supporting member of the I-shaped variable cross-section steel core of a kind 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, in 2 rectangular region that outer constraint steel pipe and I-shaped steel core form, fill 2 rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described I-shaped steel core is followed successively by linkage section a from both ends to the middle, local large section b and the surrender active section c of becoming in cross section, surrender active section c is between the large section of the local change of two sections b, the local large section b two ends of close outer constraint steel pipe respectively that become, cross section.Described outer constraint steel pipe forms square-section by the channel-section steel butt welding of two flutings.Outer constraint steel pipe offers stopper slot at local four wing places that become large section b, I-shaped steel core cross section of correspondence, the length of stopper slot is a bit larger tham the local length that becomes large section b in cross section, local four wings that become large section b in cross section stretch out outside outer constraint steel pipe by stopper slot, the local increasing section of 60 ° of slope angles is sentenced in stopper slot in I-shaped steel core cross section, until cross section passes outer constraint steel pipe 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 cross section and become large section flange width, described outer constraint steel pipe waist fluting, the length d of the outer constraint steel tube end part of stopper slot distance is 1/12 of steel pipe length, 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, tension while considering to comprise I-shaped steel core surrender, the control displacement of compressive deformation and this displacement-limited with dissipation system of design, according to the restriction at seismic design of structures standard Elastic And Plastic relative storey displacement angle, require to stipulate that its ultimate range is poor.
When the anti-buckling support of I-shaped variable cross-section is stressed, the surrender of first consuming energy of I-shaped steel core, when after I-shaped steel core surrender, distortion acquires a certain degree limited groove constraint, the stressed axial rigidity that provides is provided outer obligatory point, and outer obligatory point rigidity is larger, the sidesway that can effectively limit the rear structural entity of I-shaped steel core surrender, reaches spacing effect.
The local increasing section of 60 ° of slope angles is sentenced in outer steel pipe stopper slot in described I-shaped steel core cross section, until cross section passes outer steel pipe stopper slot, while guaranteeing tension, steel core is connected safety with outer steel pipe, utilizes 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 that retrains steel pipe is outward greater than I-shaped steel core surrender active section flange width, is less than the flange width that I-shaped steel core cross section becomes general goal.
Described I-steel in-core surface is pasted with non-cohesive material, in the gap of outer constraint steel pipe and I-shaped steel core, is filled with non-cohesive material.
According to above technical scheme, compared with prior art the present invention has following characteristics and beneficial effect.
Superior performance: the energy dissipation capacity that energy dissipation capacity of the present invention is 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 whole 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, the axial rigidity of outer constraint steel pipe is conducive to the storey sidesway of limiting structure as the additional stiffness of support system, realize limit function.
The present invention can be widely used in energy-dissipating and shock-absorbing and the spacing control of building.
Accompanying drawing explanation
Fig. 1 is structure side view of the present invention.
Fig. 2 is Figure 1A-A place sectional drawing.
Fig. 3 is Figure 1B-B place 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, 5-filling non-cohesive material, the butt weld of 6-channel-section steel, a-linkage section, the large section of b-partial cross section change, c-surrender active section, the distance of d-stopper slot distance steel tube end, e-stopper slot length outward.
The specific embodiment
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples, with claims, is as the criterion.
As shown in Figure 1, the anti-buckling spacing energy-consumption supporting member of the I-shaped variable cross-section 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 large section b and the surrender active section c of becoming in cross section.The local increasing section of 60 ° of slope angles is sentenced in outer steel pipe stopper slot (4) in described I-shaped steel core (1) cross section, until cross section passes the about 30mm of outer steel pipe stopper slot.2 rectangular region that form between described power consumption steel core (1) and outer constraint steel pipe (2) are filled 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 the about 10mm of I-shaped steel core surrender active section flange width, be less than the about 30mm of flange width that I-shaped steel core cross section becomes general goal, 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 the length d of the outer steel tube end part of stopper slot distance is 1/12 of steel pipe length, 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 big-length, the control displacement of this displacement-limited with dissipation system of tension, compressive deformation and design while considering to comprise steel core surrender, requires to stipulate that its ultimate range is poor according to the restriction at seismic design of structures standard Elastic And Plastic relative storey displacement angle.Except above-mentioned example, the section form of steel core (1) can also be H tee 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 place.
As shown in Figure 3, the width of outer constraint steel pipe (2) is greater than the about 10mm of I-shaped steel core surrender active section flange width, is less than the about 30mm of flange width that I-shaped steel core cross section becomes general goal.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), be that steel core section amplification place is inwardly compressed while touching the end of stopper slot, outer constraint steel pipe (2) is contributed 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), be that steel core section amplification place outwards stretches while touching the end of stopper slot, outer constraint steel pipe (2) is contributed axial extensional rigidity, control structure global displacement under the effect of steel core.Now steel core (1) and outer constraint steel pipe (2) are made the as a whole external loads of jointly bearing.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-section 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, in 2 rectangular region that outer constraint steel pipe and I-shaped steel core form, fill 2 rectangle light-gauge steel section concrete filled steel tubes, it is characterized in that, described I-shaped steel core is followed successively by linkage section a from both ends to the middle, local large section b and the surrender active section c of becoming in cross section, surrender active section c is between the large section of the local change of two sections b, the local large section b two ends of close outer constraint steel pipe respectively that become, cross section.Described outer constraint steel pipe forms square-section by the channel-section steel butt welding of two flutings, outer constraint steel pipe offers stopper slot at local four wing places that become large section b, I-shaped steel core cross section of correspondence, the length of stopper slot is a bit larger tham the local length that becomes large section b in cross section, local four wings that become large section b in cross section stretch out outside outer constraint steel pipe by stopper slot, the local increasing section of 60 ° of slope angles is sentenced in stopper slot in I-shaped steel core cross section, until cross section passes outer constraint steel pipe stopper slot.
2. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped variable cross-section 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 cross section becomes general goal b.
3. according to the anti-buckling spacing energy-consumption supporting member of the I-shaped variable cross-section steel core of a kind of channel-section steel open flume type of claim 1, it is characterized in that, the local increasing section of 60 ° of slope angles is sentenced in stopper slot in I-shaped steel core cross section, until cross section passes outer constraint steel pipe stopper slot, make by stopper slot, to be well connected with outer steel pipe after 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-section 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 waists are offered stopper slot, the length d of the outer constraint steel tube end part of stopper slot distance is 1/12 of steel pipe length, 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-section 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 is pasted with non-cohesive material, and the space between outer constraint steel pipe, I-shaped steel core and concrete filled steel tube is filled with 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714952A (en) * | 2016-03-03 | 2016-06-29 | 东南大学 | Bamboo-shaped 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 (5)
| 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 |
| US20080083173A1 (en) * | 2002-05-29 | 2008-04-10 | Sme Steel Contractors, Inc. | Bearing brace apparatus |
| 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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2013
- 2013-12-30 CN CN201310745321.XA patent/CN103711221B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| US20080083173A1 (en) * | 2002-05-29 | 2008-04-10 | Sme Steel Contractors, Inc. | Bearing brace apparatus |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714952A (en) * | 2016-03-03 | 2016-06-29 | 东南大学 | Bamboo-shaped buckling-restrained brace |
| 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 |
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| CN103711221B (en) | 2016-01-13 |
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