CN101105053A - Double-layer sleeve linear buckling restrained brace with transverse partition plate - Google Patents
Double-layer sleeve linear buckling restrained brace with transverse partition plate Download PDFInfo
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- CN101105053A CN101105053A CNA2007102010347A CN200710201034A CN101105053A CN 101105053 A CN101105053 A CN 101105053A CN A2007102010347 A CNA2007102010347 A CN A2007102010347A CN 200710201034 A CN200710201034 A CN 200710201034A CN 101105053 A CN101105053 A CN 101105053A
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- 238000005192 partition Methods 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 160
- 239000010959 steel Substances 0.000 claims abstract description 160
- 239000000463 material Substances 0.000 claims abstract description 57
- 238000012856 packing Methods 0.000 claims description 14
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 230000010412 perfusion Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 238000005267 amalgamation Methods 0.000 claims description 4
- 229920002223 polystyrene Polymers 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004794 expanded polystyrene Substances 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000006073 displacement reaction Methods 0.000 description 1
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Abstract
A double-layer sleeve linear buckling restrained brace with a diaphragm plate is characterized in that a middle main body of a core steel brace is a yielding section with a smaller width, heads at two outer ends are overhanging sections, a transition section is arranged between the overhanging sections and the yielding section, the cross section of the yielding section is linear, the cross sections of the transition section and the overhanging section are cross-shaped, the diaphragm plate is welded in the middle of the yielding section, and outer sleeve restrained steel pipes are positioned at two sides of the diaphragm plate; an inner sleeve steel pipe is sleeved between the outer sleeve constraint steel pipe and the core steel support, the cross section of the inner sleeve steel pipe is in a straight line shape relative to the yield section position, the cross section of the inner sleeve steel pipe is in a cross shape relative to the transition section position, a filling material is filled between the inner sleeve steel pipe and the outer sleeve constraint steel pipe, a debonding material is wrapped on the surface close to the core steel support, a gap is formed between the debonding material and the inner sleeve steel pipe, and a compressible material is filled in the gap. The invention has the advantages of simple structure, low cost and suitability for assembly line processing, and can be widely used for high-rise buildings, high-rise structures, road and railway bridges and the like.
Description
(1) technical field:
The present invention relates to a kind of building structural element, relate in particular to a kind of building structure supporting member that is used in the earthquake resistant engineering field.
(2) background technology:
In recent years, develop rapidly along with socioeconomic, the quickening day by day of urbanization process, the building of various various kinds moulding complexity, function uniqueness continues to bring out.Though the development of the design-build technology of the development of modern project technology, particularly high building structure is achieved these building schemes; But big shake earthquake in recent years also shows, the agent structure in seismic process of building although it is so is not subjected to tangible destruction, but because agent structure is gentle partially, causes malformation excessive, thereby cause the heavy damage of non-structural element and related service facility, lose huge; And, cause shake back reparation difficulty or cost too high because such structure often all can produce nonlinear deformation, the requirement of discontented foot channel Ji.
In order to reduce the distortion of this class formation under the geological process, people tend to set up some steel supporting components in structure, to improve the integral rigidity of structure.But traditional steel supporting component can produce the phenomenon of flexing when the severe earthquake action pressurized, thus often the supporting member section is strengthened adhering to specification, but still be difficult to guarantee under macroseism, do not take place the flexing unstability.In view of this, the axle power member of flexing unstability can not take place when some researchers in Japan, the U.S. and China Taiwan have developed a kind of pressurized recently, be referred to as to frustrate in the wrong restraining in China Taiwan and support (BucklingRestrained Braces, be called for short BRB), then be referred to as not have bonding support (Unbonded Braces is called for short UBB) in the U.S. and Japan.Consider that this member has very strong energy dissipation capacity behind material yield, in actual engineering, it can be supported as power consumption and use.At present, this member has obtained extensive use in Japan, the U.S. and China Taiwan; At home, still be in the starting stage of research, engineering is used less.
Buckling-restrained support is a kind ofly all can reach surrender and the axle power member of flexing unstability does not take place when tension and pressurized, compares with traditional center support to have more stable mechanical property.Through suitably design, the framework that contains buckling-restrained support not only can increase integral rigidity, improve structure ductility, and because characteristic that can flexing during its pressurized can be given full play to the hysteresis energy dissipating ability of steel, therefore, this member has possessed the function of center support and displacement type damper simultaneously, has important use in the earthquake resistant engineering field and is worth.
Generally speaking, buckling-restrained support is made up of three parts, i.e. core steel support, overcoat constraint steel pipe and sliding mechanism.The core steel supports, and is called the main stress unit again, is force-summing element main in the member; Overcoat constraint steel pipe is called the lateral support unit again, is responsible for providing tied mechanism, to prevent the support of core steel integral body or cripling takes place when being subjected to axial compression.In addition, for avoid the core steel support because of be subjected to after the compression swelling and between overcoat constraint steel pipe generation bond or frictional force causes rolling up of axial pressure, must between support of core steel and overcoat constraint steel pipe, a kind of sliding mechanism be set, at present, this sliding mechanism is mainly provided by the unsticking knot material of filling between support of core steel and the overcoat constraint steel pipe.
Fig. 1 is a kind of structure phantom drawing of common buckling-restrained support.The packing material 4 that the core steel support 1 that buckling-restrained support shown in the figure is made of steel plate, overcoat constraint steel pipe 2, unsticking knot material 3, concrete or mortar constitute is formed.Wherein, the core steel supports 1 and directly bears a power load, is made up of the steel plate of certain strength; Overcoat constraint steel pipe 2 and packing material 4 constitute overcoat constraint steel pipe together, the core steel is supported 1 form constraint, and the core steel supports 1 the flexing unstability takes place when preventing that axial compression from acquiring a certain degree; Unsticking knot material 3 is made of special chemical material, can cut off support 1 of core steel and packing material 4, and making the core steel support 1 can free dilatation when pressurized.There are four major defects in above-mentioned existing buckling-restrained support:
1, core steel support 1 need be made of the certain strength steel plate, and the material range of choice is restricted, and the difficulty of processing and manufacturing is big, and the cost height is unfavorable for promoting the use of in engineering.
2, unsticking knot material 3 should guarantee that the core steel supports 1 axially be free to slide, and it is unfettered to make the core steel support 1 lateral expansion again, also wants strict its thickness of control simultaneously, can not be too thick again can not be too thin, therefore, must need to adopt special chemical material.Like this, just increase the manufacture difficulty and the cost of member, caused buckling-restrained support that the transition of unsticking knot material is relied on simultaneously.
3, adopt concrete or mortar as packing material 4, the perfusion operation is difficulty relatively.In the actual engineering, the length of buckling-restrained support is bigger, and is general all more than 4 meters.At this moment, should guarantee that concrete or mortar injection are closely knit, guarantee that again the relative position of overcoat constraint steel pipe 2 and core steel support 1 can not be offset, be the comparison difficulty.
4, the bigger member of tonnage, because himself cross section is bigger, deadweight tends to reach 800～900 kilograms, even several tons, be not easy to transportation and engineering site and install.
(3) summary of the invention:
In order to overcome the above-mentioned deficiency of existing buckling-restrained support, solve the material range of choice limited, make and install problem loaded down with trivial details and that cost is high, the invention provides the buckling-restrained support of a kind of band diaphragm bilayer sleeve in-line.
The technical solution adopted for the present invention to solve the technical problems is:
The buckling-restrained support of this band diaphragm bilayer sleeve in-line comprises support 1 of core steel and overcoat constraint steel pipe 2, it is characterized in that:
Above-mentioned core steel support 1 is axial along it, its mid-section body is the less surrender section 103 of width, two outer end heads are bigger overhanging section 101 of width, between overhanging section and the surrender section is changeover portion 102, the cross section of its surrender section 103 is an in-line, the cross section of its changeover portion 102 and overhanging section 101 is a cross, is welded with diaphragm 8 radially on the medium position of surrender section 103, is provided with reserving hole 10 on diaphragm.
Above-mentioned overcoat constraint steel pipe 2 is divided into two sections, is enclosed within the core steel respectively and supports 1 outside, and be positioned at diaphragm 8 both sides.
Support between 1 at overcoat constraint steel pipe 2 and core steel, be positioned at the surrender section 103 and changeover portion 102 outsides that the core steel supports, the cross section that also is with respect to surrender section 103 positions is an in-line, cross section with respect to changeover portion 102 positions is criss-cross interior cover steel pipe 9, be filled with packing material 4 between interior cover steel pipe 9 and the overcoat constraint steel pipe 2, two outer ends of interior cover steel pipe 9 and overcoat constraint steel pipe 2 are connected with a shutoff steel plate 11 respectively, and interior cover steel pipe 9 is connected with diaphragm 8 respectively with two the inners of overcoat constraint steel pipe 2.
On one of them of above-mentioned two shutoff steel plates 11, have perfusion hole 12.
Be close to the surrender section 103 of core steel support and the unsticking that is coated with of changeover portion 102 and tie material, between unsticking knot material and interior cover steel pipe 9, slit 6 is arranged, fill compressible material in the slit 6.
The changeover portion 102 that above-mentioned core steel supports can be inclined-plane, hyperboloid, two folding faces or three folding faces.
Can have bolt hole 7 on overhanging section 101 that above-mentioned core steel supports.
The cross section of above-mentioned overcoat constraint steel pipe 2 can be rectangle or circle.
Above-mentioned overcoat constraint steel pipe 2 can be whole shape or is spliced through amalgamation bolt 13 by two troughing plates.
Above-mentioned packing material 4 can be CGM contraction-free grouting concrete, concrete or mortar material.
Above-mentioned unsticking knot material can be polytetrafluoroethylene film or polyvinyl chloride film, polyethylene sheeting or grease release agent.
Above-mentioned compressible material can be expanded polystyrene (EPS) or extruded polystyrene.
The material of above-mentioned core steel support 1 can be the Q235B steel.
Above-mentioned core steel supports 1 overhanging section and is connected with junction plate 17 by bolt 5, and the gusset plate 16 between the outer end of junction plate 17 and post 14 and the beam 15 links together.
Compare with existing buckling-restrained support, the invention has the beneficial effects as follows:
The material that the present invention adopts common Q235B steel to support as the core steel, and the special unsticking knot material of cancellation use, thus make cost save significantly, compare with the buckling-restrained support of tradition, be more conducive in actual engineering, promote the use of; The process for machining and manufacturing flow process is simple and clear, be suitable for the operation of mass industrial flow-line, erection procedure is simple, for the bigger member of tonnage, overcoat constraint steel pipe 2 can be spliced by two dished steel plates, and interior like this cover steel pipe 9 and core steel support 1 can be in factory-assembled, and overcoat constraint steel pipe 2 can be installed in the engineering site original position, the situ perfusion packing material 4 then, not only made things convenient for long-distance transport but also improved on-the-spot installation accuracy; Interior cover steel pipe 9 has guaranteed the disengaging of core steel support 1 with overcoat constraint steel pipe 2, overcoat constraint steel pipe 2 and packing material 4 have guaranteed rigidity requirement of the present invention, be close to and be wrapped in the polytetrafluoroethylene film unsticking knot material that the core steel supports 1 surface, in the time of can reducing the core steel and support 1 high-order flexing and the contact friction of interior cover steel pipe 9; Between unsticking knot material and interior cover steel pipe 9, slit 6 is set, the limited problem of lateral expansion in the time of can solving core steel support pressurized effectively, guaranteed that promptly supporting member has the mechanical property feature of traditional buckling-restrained support, eliminated the drawback that unsticking knot material transition is relied on again, simultaneously, compressible material such as filled and process polystyrene in the slit 6 promptly is convenient to make, and saves cost again; The place is provided with diaphragm 8 at the central axis of symmetry of support, at first be to provide lateral support for the core steel supports 1, both avoided the core steel to support the possibility that the low order flexing occurs, guaranteed the relative position that flexing overcoat constraint steel pipe and core steel support again, made the on-the-spot original position of overcoat constraint steel pipe and packing material be mounted for possibility.
(4) description of drawings:
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of common buckling-restrained support.
Fig. 2 is structure of the present invention and schematic appearance.
Fig. 3 is the structural representation that core steel of the present invention supports.
Fig. 4 is the A-A generalized section of Fig. 2.
Fig. 5 is the B-B generalized section of Fig. 2.
Fig. 6 is the C-C generalized section of Fig. 2.
Fig. 7 is the D-D generalized section of Fig. 2.
Fig. 8 is the enlarged diagram at I place among Fig. 2.
Fig. 9 is the enlarged diagram at II place among Fig. 4.
Figure 10 is overhanging section the schematic diagram that core steel of the present invention supports.
Figure 11 is the A-A generalized section of the another kind of embodiment of the present invention.
Figure 12 is the B-B generalized section of the another kind of embodiment of the present invention.
Figure 13 is the C-C generalized section of the another kind of embodiment of the present invention.
Figure 14 is a scheme of installation of the present invention.
Figure 15 is the E Ling generalized section of Figure 14.
Among the figure: 1-core steel supports, and overhanging section of 101-, 102-changeover portion, 103-surrender section;
2-overcoat constraint steel pipe, 3-unsticking knot material, 4-packing material, 5-bolt, 6-slit, 7-bolt hole, cover steel pipe in the 8-diaphragm, 9-, the 10-reserving hole, 11-shutoff steel plate, 12-pours into hole, 13-amalgamation bolt, 14-post, 15-beam, 16-gusset plate, 17-junction plate.
(5) specific embodiment:
Referring to Fig. 2, the buckling-restrained support of this band diaphragm bilayer sleeve cross comprises support 1 of core steel and overcoat constraint steel pipe 2.Above-mentioned overcoat constraint steel pipe 2 is divided into two sections, is enclosed within the core steel respectively and supports 1 outside, and be positioned at diaphragm 8 both sides.
Referring to Fig. 3-7, above-mentioned core steel support 1 is axial along it, its mid-section body is the less surrender section 103 of width, two outer end heads are bigger overhanging section 101 of width, between overhanging section and the surrender section is changeover portion 102, and cross section of its surrender section 103 is an in-line, and the cross section of its changeover portion 102 and overhanging section 101 is a cross, on the medium position of surrender section 103, be welded with diaphragm 8 radially, on diaphragm, be provided with reserving hole 10.
Support between 1 at overcoat constraint steel pipe 2 and core steel, be positioned at the surrender section 103 and changeover portion 102 outsides that the core steel supports, the cross section that also is with respect to surrender section 103 positions is an in-line, cross section with respect to changeover portion 102 positions is criss-cross interior cover steel pipe 9, be filled with packing material 4 between interior cover steel pipe 9 and the overcoat constraint steel pipe 2, two outer ends of interior cover steel pipe 9 and overcoat constraint steel pipe 2 are connected with a shutoff steel plate 11 respectively, and interior cover steel pipe 9 is connected with diaphragm 8 respectively with two the inners of overcoat constraint steel pipe 2.
On one of them of above-mentioned two shutoff steel plates 11, have perfusion hole 12.
Referring to Fig. 8, Fig. 9, be close to the surrender section 103 of core steel support and the unsticking that is coated with of changeover portion 102 and tie material, between unsticking knot material and interior cover steel pipe 9, slit 6 is arranged, fill compressible material in the slit 6.
The changeover portion 102 that above-mentioned core steel supports can be inclined-plane, hyperboloid, two folding faces or three folding faces.
Referring to Figure 10, can have bolt hole 7 on overhanging section 101 that above-mentioned core steel supports.
Referring to Figure 11-13, above-mentioned overcoat constraint steel pipe 2 can be whole shape or is spliced through amalgamation bolt 13 by two troughing plates.
The cross section of above-mentioned overcoat constraint steel pipe 2 can be rectangle or circle.
Above-mentioned packing material 4 can be CGM contraction-free grouting concrete, concrete or mortar material.
Above-mentioned unsticking knot material can be polytetrafluoroethylene film or polyvinyl chloride film, polyethylene sheeting or grease release agent.
Above-mentioned compressible material can be expanded polystyrene (EPS) or extruded polystyrene.
The material of above-mentioned core steel support 1 can be the Q235B steel.
During manufacturing,, determine that by the material performance index of Q235B steel the core steel supports the length and the cross dimensions of each section, according to the length and the support of cross dimensions processing and fabricating core steel of each section at first according to of the requirement of actual engineering to support strength and rigidity; Secondly, support vertical axis of symmetry place welding diaphragm 8 of surrender section 103 at the core steel; In the 3rd step, be close to parcel one deck polytetrafluoroethylene film in the surrender section 103 of core steel support and the surface of changeover portion 102; In the 4th step, wrap up one deck foamed polystyrene again in PolytetrafluoroethylFilm Film by the size of design reserving gaps 6; The 5th step, to be close to the foamed polystyrene surface interior cover steel pipe 9 is installed, interior cover steel pipe 9 is connected by welding or bolt with diaphragm 8; The 6th step installed and fixed overcoat constraint steel pipe 2, cover steel pipe 9 and overcoat constraint steel pipe 2 in connecting with shutoff steel plate 11; At last, between interior cover steel pipe 9 and overcoat constraint steel pipe 2, inject the CGM contraction-free grouting concrete, finish the making of whole buckling-restrained support by perfusion hole 12.
Referring to Figure 14, Figure 15, above-mentioned core steel supports 1 overhanging section and is connected with junction plate 17 by bolt 5, and the gusset plate 16 between the outer end of junction plate 17 and post 14 and the beam 15 links together.During installation, with the junction of post 14 or the midpoint of beam 15 gusset plate 16 that installation is connected usefulness is set at beam 15, supporting member gusset plate 16 is connected with bolt 5 by junction plate 17 then, finish installation according to the structure needs.
Claims (10)
1. the buckling-restrained support of a band diaphragm bilayer sleeve in-line comprises that the core steel supports (1) and overcoat constraint steel pipe (2), is characterized in that:
It is axial along it that above-mentioned core steel supports (1), its mid-section body is the less surrender section (103) of width, two outer end heads are width bigger overhanging section (101), between overhanging section and the surrender section is changeover portion (102), the cross section of its surrender section (103) is an in-line, the cross section of its changeover portion (102) and overhanging section (101) is a cross, is welded with diaphragm (8) radially on the medium position of surrender section (103), is provided with reserving hole (10) on diaphragm;
Above-mentioned overcoat constraint steel pipe (2) is divided into two sections, is enclosed within the core steel respectively and supports (1) outside, and be positioned at diaphragm (8) both sides;
Support between (1) at overcoat constraint steel pipe (2) and core steel, be positioned at the surrender section (103) and changeover portion (102) outside that the core steel supports, the cross section that also is with respect to surrender section (103) position is an in-line, cross section with respect to changeover portion (102) position is criss-cross interior cover steel pipe (9), be filled with packing material (4) between interior cover steel pipe (9) and the overcoat constraint steel pipe (2), two outer ends of interior cover steel pipe (9) and overcoat constraint steel pipe (2) are connected with a shutoff steel plate (11) respectively, and interior cover steel pipe (9) is connected with diaphragm (8) respectively with two the inners of overcoat constraint steel pipe (2);
On one of them of above-mentioned two shutoff steel plates (11), have perfusion hole (12);
Be close to the surrender section (103) of core steel support and the unsticking that is coated with of changeover portion (102) and tie material, between unsticking knot material and interior cover steel pipe (9), slit (6) is arranged, fill compressible material in slit (6).
2. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 1 is characterized in that: the changeover portion (102) that above-mentioned core steel supports is inclined-plane, hyperboloid, two folding faces or three folding faces.
3. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 2 is characterized in that: have bolt hole (7) on overhanging section (101) that the core steel supports.
4. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 2 is characterized in that: the cross section of above-mentioned overcoat constraint steel pipe (2) is rectangle or circle.
5. according to claim 2 or the 4 above-mentioned buckling-restrained supports of a kind of band diaphragm bilayer sleeve in-line, it is characterized in that: above-mentioned overcoat constraint steel pipe (2) is whole shape or is spliced through amalgamation bolt (13) by two troughing plates.
6. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 5, it is characterized in that: above-mentioned packing material (4) is CGM contraction-free grouting concrete, concrete or mortar material.
7. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 5 is characterized in that: above-mentioned unsticking knot material is polytetrafluoroethylene film or polyvinyl chloride film, polyethylene sheeting or grease release agent.
8. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 5, it is characterized in that: above-mentioned compressible material is expanded polystyrene (EPS) or extruded polystyrene.
9. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 5 is characterized in that: the material that above-mentioned core steel supports (1) is the Q235B steel.
10. a kind of band diaphragm bilayer sleeve in-line buckling-restrained support above-mentioned according to claim 5, it is characterized in that: above-mentioned core steel supports (1) overhanging section and is connected with junction plate (17) by bolt (5), and the gusset plate (16) between the outer end of junction plate (17) and post (14) and the beam (15) links together.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007102010347A CN100560884C (en) | 2007-07-10 | 2007-07-10 | The buckling-restrained support of a kind of band diaphragm bilayer sleeve in-line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007102010347A CN100560884C (en) | 2007-07-10 | 2007-07-10 | The buckling-restrained support of a kind of band diaphragm bilayer sleeve in-line |
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| CN101105053A true CN101105053A (en) | 2008-01-16 |
| CN100560884C CN100560884C (en) | 2009-11-18 |
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| CNB2007102010347A Expired - Fee Related CN100560884C (en) | 2007-07-10 | 2007-07-10 | The buckling-restrained support of a kind of band diaphragm bilayer sleeve in-line |
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2007
- 2007-07-10 CN CNB2007102010347A patent/CN100560884C/en not_active Expired - Fee Related
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