CN103711218B - A kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core - Google Patents
A kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core Download PDFInfo
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- CN103711218B CN103711218B CN201310745068.8A CN201310745068A CN103711218B CN 103711218 B CN103711218 B CN 103711218B CN 201310745068 A CN201310745068 A CN 201310745068A CN 103711218 B CN103711218 B CN 103711218B
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Abstract
A kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core, belong to anti-buckling spacing energy-consumption supporting member technical field, in-line steel core is followed successively by linkage section from both ends to the middle, local, cross section becomes big section and surrender active section, surrender active section becomes between big section in two sections local, local, cross section becomes the big section two ends respectively close to outer constraint steel pipe, is stretched out outside outer constraint steel pipe by stopper slot；Described outer constraint steel pipe is formed square-section by the channel-section steel butt welding of two flutings, outer constraint steel pipe becomes general goal in corresponding in-line steel core section local and offers stopper slot, the length of stopper slot is a bit larger tham local, cross section and is become the length of big section, local, cross section becomes big section two ends with 60 ° of slope angle local increasing sections, until passing stopper slot, and so as to outer constraint steel pipe good connection, the outer axial rigidity retraining steel pipe can be utilized to realize limit function after tension and compression are surrendered.This spacing energy dissipation brace can be widely applied to the energy-dissipating and shock-absorbing of building and spacing control.
Description
Technical field
The invention belongs to anti-buckling spacing energy-consumption supporting member technical field, relate to a kind of novel engineering structure energy dissipation and spacing supporting member, especially a kind of built-in steel core is variable cross-section in-line, and outer constraint steel pipe is the anti-buckling spacing energy-consumption supporting member of open flume type butt welding channel-section steel.Load-bearing early stage in-line variable-cross-sectisteel steel core power consumption surrender, when deflection reaches the obligatory point of stopper slot, outer constraint steel pipe with surrender after steel core axial rigidity, restraining structure bulk deformation are provided jointly, it is achieved the function of limiting displacement.
Background technology
Buckling restrained brace is also known as anti-buckling support or BRB (Bucklingrestrainedbrace), product technology is developed in the Japan of 1973 the earliest, a collection of Japanese scholars at that time successfully have developed wall board type buckling-restrained energy-dissipation the earliest, and to the tensile compression test that it has carried out adding different non-cohesive material；After 1994 Nian Bei ridge earthquakes, the U.S. also begins to anti-buckling support system is carried out corresponding design studies and vast scale test, this support system advantage compared with other support systems in combination with theoretical calculation analysis.Anti-buckling support by supporting inner core, peripheral constraint component forms, very big anti-side rigidity and bearing capacity can be provided for framework or bent structure, adopt the structural system supported to apply very extensive in building structure.Be usually provided with between the two non-cohesive material or suitable gap with discharge support inner core pressurized time produced dilatancy.Outer sleeve and packing material only retrain central layer compressive buckling, make central layer in tension and be subject to pressure all can enter surrender, thus, the Hysteresis Behavior that anti-buckling constraint supports is excellent.
Traditional curvature-prevention support component has the characteristics that, only steel core is connected with structural elements, load is undertaken 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 in tension and be subject to pressure all can enter surrender.Namely only consider central layer one power consumption core, be left out the axial rigidity contribution of outer constraint sleeve.The anti-buckling support of research and development at present mainly improves its energy dissipation capacity emphatically, studies less to the position-limiting action of anti-buckling support.In consideration of it, we prepare design one after steel core power consumption surrender, can utilize a kind of novel curvature-prevention support component of the outer axial rigidity limiting structure entirety sidesway retraining steel pipe.
Summary of the invention
The present invention is on existing anti-buckling brace foundation, it is proposed to a kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable cross-section, is rely only on steel core surrender power consumption for existing anti-buckling support, and without displacement control device improves greatly.Outer constraint steel pipe adopts the rectangular steel tube that open flume type butt welding channel-section steel is formed, and steel core adopts the stopper slot tabling of the design of in-line variable cross-section and outer constraint steel pipe, consequently facilitating utilize the outer axial rigidity retraining steel pipe to reach spacing target after steel core is surrendered.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of channel-section steel anti-buckling spacing energy dissipation brace of open flume type in-line variable cross-section, including in-line steel core and outer constraint steel pipe, in-line steel core is positioned at outer constraint steel duct, two rectangle light-gauge steel section concrete filled steel tubes are filled in two rectangular region that outer constraint steel pipe and in-line steel core are formed, it is characterized in that, described in-line steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes big section b and surrender active section c, surrender active section c becomes between big section b in two sections local, local, cross section becomes the big section b two ends respectively close to outer constraint steel pipe, stretched out outside outer constraint steel pipe by stopper slot.Described outer constraint steel pipe is formed square-section by the channel-section steel butt welding of two flutings, and outer constraint steel pipe becomes big section in corresponding in-line steel core section local and offers stopper slot, and the length of stopper slot is a bit larger tham local, cross section and is become the length of big section b.In-line steel core section local becomes big section b two ends with 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot, so as to outer constraint steel pipe good connection, the outer axial rigidity retraining steel pipe can be utilized to reach spacing target after tension and compression are surrendered；The width of outer constraint steel pipe surrenders active section width more than in-line steel core, becomes the width of general goal less than in-line steel core section, and the gap between outer constraint steel pipe, in-line steel core and rectangle light-gauge steel section concrete filled steel tube arranges non-cohesive material layer；Fluting in the middle of described outer constraint steel pipe two channel-section steel waist, longitudinal grooved position is consistent with steel core variable cross-section region, and stopper slot is apart from length d is steel pipe total length the 1/12 of outer constraint steel tube end part, and stopper slot length e is the 1/6 of outer constraint steel pipe total length.Stopper slot becomes the length difference of big section with steel core section, consideration includes the command displacement amount of tension when steel core is surrendered, compressive deformation and this displacement-limited with dissipation system of design, requires to specify that its greatest length is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.
Described in-line steel core is become big section b and surrender active section c by linkage section a, local, cross section and forms, and local, cross section becomes the stopper slot position retraining steel pipe outside big section correspondence.
Described in-line steel core section sentences 60 ° of slope angle local increasing sections in outer constraint steel pipe stopper slot, until cross section passes outer constraint steel pipe stopper slot, ensure in-line steel core after tension and compression are surrendered with outer constraint steel pipe good connection, it is prevented that slip and also utilize the outer axial rigidity retraining steel pipe to reach spacing target.
Described outer constraint steel pipe is formed square-section by the channel-section steel butt welding of two flutings, and the outer width retraining steel pipe surrenders active section width more than in-line steel core, becomes the width of big section less than in-line steel core section.
Fluting in the middle of described outer constraint steel pipe two channel-section steel waist, longitudinal grooved position is consistent with in-line steel core variable cross-section region, and stopper slot is apart from length d is steel pipe total length the 1/12 of outer constraint steel tube end part, and stopper slot length e is the 1/6 of steel pipe total length.Stopper slot becomes the length difference of big section with steel core section, consideration includes the command displacement amount of tension when steel core is surrendered, compressive deformation and this displacement-limited with dissipation system of design, requires to specify that its greatest length is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.
2 rectangular region formed between described power consumption steel core and outer constraint steel pipe fill 2 rectangle light-gauge steel section concrete filled steel tubes.
Non-cohesive material layer is filled in gap between described in-line steel core, outer constraint steel pipe and rectangle light-gauge steel section concrete filled steel tube.
When described linkage section is physically connected to component, put more energy into floor or angle steel can be welded as required to increase linkage section intensity, it is ensured that linkage section two-way stable.
According to above technical scheme, compared with prior art the invention have the characteristics that and beneficial effect.
Superior performance: the energy dissipation capacity of the present invention is the energy dissipation capacity of steel core, but when after steel core surrender, deflection reaches the limit of stopper slot, after surrender, steel core and outer constraint steel pipe provide axial rigidity, limiting structure entirety sidesway jointly, thus take full advantage of the axial rigidity of outer constraint steel pipe；
Drawing 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, it is achieved limit function.
The composite can be widely applied to the energy-dissipating and shock-absorbing of building and spacing control.
Accompanying drawing explanation
Fig. 1 is the structural side view of the present invention.
Fig. 2 is that Figure 1A-A locates profile.
Fig. 3 is that Figure 1B-B locates profile.
Accompanying drawing labelling: retrain steel pipe, 3-rectangle light-gauge steel section concrete filled steel tube, 4-steel tube end part stopper slot, 5-non-cohesive material, 6-channel-section steel butt weld, a-linkage section length, b-cross section outside 1-in-line steel core, 2-and locally become the length of big segment length, c-surrender active section length, the distance of d-stopper slot distance steel tube end, e-stopper slot.
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 example, is as the criterion with claims.
As it is shown in figure 1, a kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core.Including in-line steel core (1) and outer constraint steel pipe (2).Described in-line steel core (1) includes linkage section a, local, cross section becomes big section b and surrender active section c.60 ° of slope angle local increasing sections are sentenced in outer constraint steel pipe stopper slot (4) in described in-line steel core (1) cross section, until cross section passes outer constraint steel pipe stopper slot (4) 30mm.Two rectangular region formed between described power consumption steel core (1) and outer constraint steel pipe (2) fill two rectangles light-gauge steel section concrete filled steel tube (3).Described outer constraint steel pipe (2) is formed the square-section of 300 × 300mm by the channel-section steel butt welding (6) of two flutings, and retrain outward the width width 10mm more than in-line steel core surrender active section c of steel pipe (2), become the width 30mm of big section b less than in-line steel core section, the gap between outer constraint steel pipe (2), in-line steel core (1) and rectangle light-gauge steel section concrete filled steel tube (3) arranges non-cohesive material layer (5)；Fluting in the middle of described outer constraint steel pipe (2) two channel-section steel waist, longitudinal grooved position is consistent with steel core (1) variable cross-section region, stopper slot is apart from length d is steel pipe length the 1/12 of outer constraint steel tube end part, and stopper slot length e is the 1/6 of outer constraint steel pipe total length.Stopper slot becomes the length difference of big section with steel core section, consideration includes the command displacement amount of tension when steel core (1) is surrendered, compressive deformation and this displacement-limited with dissipation system of design, requires to specify that its greatest length is poor according to the restriction of seismic design of structures specification Elastic And Plastic story drift.
As in figure 2 it is shown, the outer steel pipe (2) that retrains is formed square-section by the channel-section steel butt welding of two flutings, sectional dimension is 300 × 300mm.In-line steel core (1) variable cross-section section passes outer constraint steel pipe (2) stopper slot (4) 30mm.
As it is shown on figure 3, the width of constraint steel pipe (2) surrenders active section width 10mm more than in-line steel core, become big section width 30mm less than in-line steel core section.Gap between outer constraint steel pipe (2), in-line steel core (1) and light-gauge steel section concrete filled steel tube (3) is to arrange non-cohesive material layer (5).
The operation principle of the anti-buckling spacing energy-consumption supporting member of variable cross-section of the present invention is:
External loads is applied to anti-buckling support, and first in-line steel core bears external load until surrendering.Under pressured state, when after surrender, the compression of steel core reaches the limit of pressurized stopper slot, when namely steel core section becomes the end that big section inward compression touches stopper slot, outer constraint steel pipe contributes axial compression resistance rigidity, control structure global displacement under the effect of steel core.Under tension state, when after surrender, the stretcher strain of steel core reaches the limit of tension stopper slot, when namely the big section of steel core section change stretches out the end touching stopper slot, outer constraint steel pipe contributes axial extensional rigidity, control structure global displacement under the effect of steel core.Now steel core and outer constraint steel pipe are made as a whole jointly to bear external loads.This duty shows the working in reciprocating mode in tension and compression process.
Claims (3)
1. the channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core, including in-line steel core and outer constraint steel pipe, in-line steel core is positioned at outer constraint steel duct, two rectangle light-gauge steel section concrete filled steel tubes are filled in two rectangular region that outer constraint steel pipe and in-line steel core are formed, it is characterized in that, described in-line steel core is followed successively by linkage section a from both ends to the middle, local, cross section becomes big section b and surrender active section c, surrender active section c becomes between big section b in two sections local, local, cross section becomes the big section b two ends respectively close to outer constraint steel pipe, stretched out outside outer constraint steel pipe by stopper slot；Described outer constraint steel pipe is formed square-section by the channel-section steel butt welding of two flutings, outer constraint steel pipe becomes general goal in corresponding in-line steel core section local and offers stopper slot, the length e of stopper slot is a bit larger tham local, cross section and becomes the length of big section b, local, cross section becomes big section b two ends with 60 ° of slope angle local increasing sections, until cross section passes outer constraint steel pipe stopper slot, and so as to can with outer constraint steel pipe good connection after tension and compression are surrendered；
The width of outer constraint steel pipe surrenders active section width more than in-line steel core, becomes the width of big section less than in-line steel core section, so as to outer constraint steel pipe good connection, outer constraint steel pipe can be made to provide axial rigidity to complete later stage limit function after tension and compression are surrendered；
Fluting in the middle of described outer constraint steel pipe two channel-section steel waist, it is consistent that longitudinal grooved position becomes big section with steel core section local；Gap between outer constraint steel pipe, in-line steel core and two rectangle light-gauge steel section concrete filled steel tubes arranges non-cohesive material layer.
2. according to a kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core of claim 1, it is characterized in that, stopper slot is apart from the length d of outer constraint steel tube end part is outer constraint steel pipe total length 1/12, and stopper slot length e is the 1/6 of outer constraint steel pipe total length.
3. a kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core according to claim 1, it is characterized in that, when linkage section is physically connected to component, put more energy into floor or angle steel increase linkage section intensity can be welded as required, it is ensured that linkage section steel core two-way stable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310745068.8A CN103711218B (en) | 2013-12-30 | 2013-12-30 | A kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310745068.8A CN103711218B (en) | 2013-12-30 | 2013-12-30 | A kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core |
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| CN103711218A CN103711218A (en) | 2014-04-09 |
| CN103711218B true CN103711218B (en) | 2016-07-06 |
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| CN201310745068.8A Expired - Fee Related CN103711218B (en) | 2013-12-30 | 2013-12-30 | A kind of channel-section steel anti-buckling spacing energy-consumption supporting member of open flume type in-line variable-cross-sectisteel steel core |
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| CN107605064A (en) * | 2017-10-30 | 2018-01-19 | 南京百西思建筑科技有限公司 | A kind of anti-buckling support coupling beam of assembled X-shaped |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265662A (en) * | 2009-05-14 | 2010-11-25 | Daiwa House Industry Co Ltd | Buckling restraining brace |
| CN201933635U (en) * | 2010-10-15 | 2011-08-17 | 清华大学 | Double rectangular pipes pair clamping assembled type flexing-preventing support member |
| CN102261140A (en) * | 2011-05-23 | 2011-11-30 | 株洲时代新材料科技股份有限公司 | Segmental energy-consumption buckling-restrained brace method and device |
| JP2013032701A (en) * | 2012-11-12 | 2013-02-14 | Daiwa House Industry Co Ltd | Buckling restraining brace and method of manufacturing the same |
| CN203977608U (en) * | 2013-12-30 | 2014-12-03 | 北京工业大学 | The anti-buckling spacing energy-consumption supporting member of a kind of channel-section steel open flume type in-line variable cross-section steel core |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010265662A (en) * | 2009-05-14 | 2010-11-25 | Daiwa House Industry Co Ltd | Buckling restraining brace |
| CN201933635U (en) * | 2010-10-15 | 2011-08-17 | 清华大学 | Double rectangular pipes pair clamping assembled type flexing-preventing support member |
| CN102261140A (en) * | 2011-05-23 | 2011-11-30 | 株洲时代新材料科技股份有限公司 | Segmental energy-consumption buckling-restrained brace method and device |
| JP2013032701A (en) * | 2012-11-12 | 2013-02-14 | Daiwa House Industry Co Ltd | Buckling restraining brace and method of manufacturing the same |
| CN203977608U (en) * | 2013-12-30 | 2014-12-03 | 北京工业大学 | The anti-buckling spacing energy-consumption supporting member of a kind of channel-section steel open flume type in-line variable cross-section steel core |
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