CN201593250U - Single-pipe double-core buckling-restrained brace with diaphragm - Google Patents

Single-pipe double-core buckling-restrained brace with diaphragm Download PDF

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Publication number
CN201593250U
CN201593250U CN2010203022870U CN201020302287U CN201593250U CN 201593250 U CN201593250 U CN 201593250U CN 2010203022870 U CN2010203022870 U CN 2010203022870U CN 201020302287 U CN201020302287 U CN 201020302287U CN 201593250 U CN201593250 U CN 201593250U
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China
Prior art keywords
core
buckling
diaphragm
steel
steel pipe
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Expired - Fee Related
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CN2010203022870U
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Chinese (zh)
Inventor
罗开海
孔祥雄
程绍革
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China Academy of Building Research CABR
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China Academy of Building Research CABR
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Priority to CN2010203022870U priority Critical patent/CN201593250U/en
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Abstract

A single-pipe double-core buckling-restrained brace with a diaphragm comprises core steel supports, a restraint steel pipe and filling layers among the restraint steel pipe and the core steel supports. The restraint steel pipe is cased outside two core steel supports, each core steel support comprises a buckling section at the center, extending sections at two ends and transitional sections among the extending sections and the buckling section, the upper portion of each extending section is provided with bolt holes used for connecting a gusset plate, the middle of the buckling section is welded with the diaphragm perpendicular to the buckling section, the periphery of the diaphragm on the buckling section is distributed with prefabricated holes, two sides of the diaphragm are connected with two sections of the restraint steel pipe, outer surfaces of the buckling section and the transitional section of each core steel support are provided with smooth debonding layer, the filling layers cling to the inner surface of the restraint steel pipe closely, and clearances are formed among the filling layers and the smooth debonding layers. By aid of the design, structural rigidity of the buckling-restrained brace is increased, and integral energy dissipation of the structure is enhanced. In addition, the buckling-restrained brace is convenient for manufacturing and saves cost.

Description

The buckling-restrained support of a kind of band diaphragm single tube twin-core
Technical field
The utility model relates to the antidetonation supporting member in a kind of building structure, the buckling-restrained steel supporting component of particularly a kind of antidetonation.
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, can not satisfy instructions for use.
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.
Common have buckling-restrained support of single tube list core and a buckling-restrained support of two-tube twin-core.Common ground is that all buckling-restrained supports all are to be made of support of core steel and overcoat constraint steel cylinder that steel plate constitutes, core steel stayed surface is coated with unsticking knot material, the packing material that has concrete and mortar to constitute usually between overcoat constraint steel cylinder and core steel support.The core steel supports and directly bears a power load, is made up of the steel plate of certain strength; Overcoat constraint steel pipe and packing material constitute overcoat constraint steel pipe together, the core steel are supported forming constraint, and the core steel supports the flexing unstability takes place when preventing that axial compression from acquiring a certain degree; Unsticking knot material is made of special chemical material, can cut off the core steel and support and packing material, can free dilatation when making the core steel be supported on pressurized.There is the shortcoming of following several aspects in above-mentioned common buckling-restrained support:
1, the core steel supports and 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, what should guarantee that the core steel supports axially is free to slide, it is unfettered to make the core steel support 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.
Need docking mode to carry out when 3, the buckling-restrained support of single tube list core is installed, the connection sheet material and the bolt that need are more, and the installation accuracy requirement is high, and engineering cost is higher.
4, during the buckling-restrained support processing and fabricating of two-tube twin-core, need accurate two core steel of control to support and the about bundled tube of overcoat and the relative position relation of gusset plate is installed, support even, deform in same pace to guarantee two core steel.Processing and manufacturing difficulty is big, and the use of two overcoat constraint steel cylinders has increased the consumption and the member cost of steel.
5, 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.
The utility model content
The purpose of this utility model provides the buckling-restrained support of a kind of band diaphragm single tube twin-core, solve common buckling-restrained support manufacturing and technical problem loaded down with trivial details and that cost is high is installed.
For achieving the above object, the utility model adopts following technical scheme:
The buckling-restrained support of a kind of band diaphragm single tube twin-core, comprise that the core steel supports, packed layer between constraint steel pipe and constraint steel pipe and core steel support, the constraint steel pipe socket is outside the core steel supports, it is characterized in that: it is two that described core steel supports, every surrender section that comprises central authorities, changeover portion between overhanging section of two outer ends and overhanging section and the surrender section, described overhanging section top is useful on the bolt hole of connected node plate, the vertical diaphragm of the middle part section of being welded with and surrendering of described surrender section, diaphragm is distributed with reserving hole in the periphery of surrender section, the both sides of diaphragm connect two sections constraint steel pipes, the surrender section that described core steel supports and the external surface of changeover portion have smooth unsticking layer, described packed layer is close to the inner surface that retrains steel pipe, leaves the slit between itself and the smooth unsticking layer.
The cross section of the surrender section that described core steel supports can be double T shape or two in-line, and the cross section of changeover portion and overhanging section is a double T shape.
The lateral surface of described constraint steel pipe is surrounded by the shutoff steel plate.
The width minimum of the surrender section that described core steel supports, overhanging section width maximum, the width of changeover portion is between the surrender section with between overhanging section.
The changeover portion that described core steel supports be shaped as oblique line, hyperbola, twice broken line or three broken lines.
Described smooth unsticking layer can be polytetrafluoroethylene film, polyvinyl chloride film, polyethylene sheeting or grease release agent.
Fill out compressible material in the described slit, described compressible material can be selected expanded polystyrene (EPS) or extruded polystyrene.
The cross section of described constraint steel pipe can be rectangle or circle.
Described every section constraint steel pipe is single steel pipe or is spliced through bolt by two troughing plates.
Unlike the prior art be, the core steel of the buckling-restrained support of two-tube twin-core is supported with two identical steel cores to be formed, overcoat constraint steel cylinder is made up of two identical steel cylinders equally.Compared with prior art the utlity model has following characteristics and beneficial effect:
(1) the utility model adopts two inner cores to support as the core steel, and mounting means adopts overlapping mode, has both simplified erection procedure, saves engineering cost, can guarantee installation accuracy again.
(2) the utility model is provided with diaphragm in the central authorities of the surrender section of core steel support, both can provide lateral support for the core steel supports, avoid the core steel to support the possibility that the low order flexing occurs, can guarantee again between two inner cores and and the constraint steel pipe between relative position, guarantee the required precision of processing and fabricating, and make the constraint steel pipe of large-tonnage member and the on-the-spot original position of packing material be mounted for possibility, not only be convenient to long-distance transport but also can improve installation accuracy.
(3) slit that between smooth unsticking layer and packed layer, is provided with, the limited problem of lateral expansion in the time of can solving core steel support pressurized effectively, both guaranteed that supporting member had the mechanical property feature of traditional buckling-restrained support, eliminated the drawback that unsticking knot material transition is relied on again, compressible material such as filled and process polystyrene in the slit simultaneously, both be convenient to make, saved cost again.
The utility model has overcome traditional manufacturing and shortcoming loaded down with trivial details and that cost is high has been installed, and has solved with lower cost simply to connect the technical problem of making practicality and high efficiency power consumption support.Being connected of antidetonation mitigation structure that can be widely used in the new construction in fields such as high-rise building, towering structure, road and rail bridge and strengthening and rebuilding engineering.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment one.
Fig. 2 is the enlarged diagram at I place among Fig. 1.
Fig. 3 is the A-A generalized section of Fig. 1.
Fig. 4 is the enlarged diagram at II place among Fig. 3.
Fig. 5 is the B-B generalized section of Fig. 1.
Fig. 6 is the C-C generalized section of Fig. 1.
Fig. 7 is the structural representation that the utility model embodiment one core steel supports.
Fig. 8 is the scheme of installation of the utility model embodiment one.
Fig. 9 is the structural representation of the utility model embodiment two.
Figure 10 is the enlarged diagram at I place among Fig. 9.
Figure 11 is the A-A generalized section of Fig. 9.
Figure 12 is the enlarged diagram at II place among Figure 11.
Figure 13 is the B-B generalized section of Fig. 9.
Figure 14 is the C-C generalized section of Fig. 9.
Figure 15 is the core steel support structure schematic diagram of the utility model embodiment two.
Figure 16 is the scheme of installation of the utility model embodiment two.
Reference numeral: the support of 1-core steel, overhanging section of 1.1-, 1.2-changeover portion, 1.3-surrender section, 2-constraint steel pipe, 3-packed layer, 4-slit, 5-diaphragm, 6-reserving hole, 7-shutoff steel plate, 8-bolt hole, 9-gusset plate, the smooth unsticking layer of 10-.
The specific embodiment
Embodiment one is referring to Fig. 1~shown in Figure 8, the buckling-restrained support of a kind of band diaphragm single tube twin-core, comprise that the core steel supports 1, packed layer 3 between constraint steel pipe 2 and constraint steel pipe and core steel support, constraint steel pipe 2 is enclosed within the core steel and supports outside 1, it is characterized in that: it is two that described core steel supports 1, every surrender section 1.3 that comprises central authorities, changeover portion 1.2 between overhanging section 1.1 of two outer ends and overhanging section 1.1 and the surrender section 1.3, described overhanging section 1.1 top is useful on the bolt hole 8 of connected node plate 9, the vertical diaphragm 5 of the middle part section of being welded with and surrendering of described surrender section 1.3, diaphragm 5 is distributed with reserving hole 6 in the periphery of surrender section 1.3, the both sides of diaphragm 5 connect two sections constraint steel pipes 2, the surrender section 1.3 of described core steel support 1 and the external surface of changeover portion 1.2 have smooth unsticking layer 10, described packed layer 3 is close to the inner surface that retrains steel pipe 2, leaves slit 4 between itself and the smooth unsticking layer 10.
The cross section that described core steel supports 1 surrender section 1.3 is double T shape or two in-line, and the cross section of changeover portion 1.2 and overhanging section 1.1 is a double T shape.
The lateral surface of described constraint steel pipe 2 is surrounded by shutoff steel plate 7.
The width minimum of the surrender section 1.3 of described core steel support 1, overhanging section 1.1 width maximum, the width of changeover portion 1.2 is between the surrender section with between overhanging section.
What described core steel supported 1 changeover portion 1.2 is shaped as oblique line, hyperbola, twice broken line or three broken lines.
Described smooth unsticking layer 10 is polytetrafluoroethylene film, polyvinyl chloride film, polyethylene sheeting or grease release agent.
Fill out compressible material in the described slit 4, described compressible material is expanded polystyrene (EPS) or extruded polystyrene.
The cross section of described constraint steel pipe 2 is rectangle or circle.
Described every section constraint steel pipe 2 is single steel pipes or is spliced through bolt by two troughing plates.
Embodiment two is referring to Fig. 9~shown in Figure 16, and different with embodiment one is, the cross section that described core steel supports 1 surrender section 1.3 be pair shapes.
Manufacture process of the present utility model:
Step 1 according to the requirement of actual engineering to support strength and rigidity, determines that by the material performance index of Q235B steel the core steel supports the length of each section and sectional dimension comes the processing core steel to support 1;
Step 2 is at the surrender section 1.3 central authorities welding diaphragms 5 of core steel support 1;
Step 3 is close to parcel one deck polytetrafluoroethylene film in the surrender section 1.3 of core steel support 1 and the surface of changeover portion 1.2;
Step 4 is wrapped up one deck foamed polystyrene by the size of design reserving gaps 4 again on the surface of polytetrafluoroethylene film;
Step 5 installs and fixes constraint steel pipe 2;
Step 6, perfusion CGM contraction-free grouting concrete in constraint steel pipe 2 at the lateral surface coating shutoff steel plate of constraint steel pipe, is finished the making of whole buckling-restrained support.
More than be two exemplary embodiments of the utility model, enforcement of the present utility model more than that.

Claims (9)

1. the buckling-restrained support of a band diaphragm single tube twin-core, comprise that the core steel supports (1), packed layer (3) between constraint steel pipe (2) and constraint steel pipe and core steel support, constraint steel pipe (2) is enclosed within the core steel and supports outside (1), it is characterized in that: it is two that described core steel supports (1), every surrender section (1.3) that comprises central authorities, changeover portion (1.2) between overhanging section (1.1) of two outer ends and overhanging section (1.1) and the surrender section (1.3), described overhanging section (1.1) top is useful on the bolt hole (8) of connected node plate (9), the vertical diaphragm (5) of the middle part section of being welded with and surrendering of described surrender section (1.3), diaphragm (5) is distributed with reserving hole (6) in the periphery of surrender section (1.3), the both sides of diaphragm (5) connect two sections constraint steel pipes (2), described core steel supports the surrender section (1.3) of (1) and the external surface of changeover portion (1.2) has smooth unsticking layer (10), described packed layer (3) is close to the inner surface of constraint steel pipe (2), leaves slit (4) between itself and the smooth unsticking layer (10).
2. the buckling-restrained support of band diaphragm single tube twin-core according to claim 1, it is characterized in that: the cross section that described core steel supports the surrender section (1.3) of (1) is double T shape or two in-line, and the cross section of changeover portion (1.2) and overhanging section (1.1) is a double T shape.
3. the buckling-restrained support of band diaphragm single tube twin-core according to claim 1 and 2 is characterized in that: the lateral surface of described constraint steel pipe (2) is surrounded by shutoff steel plate (7).
4. the buckling-restrained support of band diaphragm single tube twin-core according to claim 3, it is characterized in that: described core steel supports the width minimum of the surrender section (1.3) of (1), the width maximum of overhanging section (1.1), the width of changeover portion (1.2) is between surrender section (1.3) and overhanging section (1.1).
5. the buckling-restrained support of band diaphragm single tube twin-core according to claim 4 is characterized in that: described core steel support (1) changeover portion (1.2) be shaped as oblique line, hyperbola, twice broken line or three broken lines.
6. the buckling-restrained support of band diaphragm single tube twin-core according to claim 5 is characterized in that: described smooth unsticking layer (10) is polytetrafluoroethylene film, polyvinyl chloride film, polyethylene sheeting or grease release agent.
7. the buckling-restrained support of band diaphragm single tube twin-core according to claim 6 is characterized in that: compressible material is filled out in (4) in described slit, and described compressible material is expanded polystyrene (EPS) or extruded polystyrene.
8. the buckling-restrained support of band diaphragm single tube twin-core according to claim 7 is characterized in that: the cross section of described constraint steel pipe (2) is rectangle or circle.
9. the buckling-restrained support of band diaphragm single tube twin-core according to claim 8 is characterized in that: described every section constraint steel pipe (2) is single steel pipe or is spliced through bolt by two troughing plates.
CN2010203022870U 2010-02-04 2010-02-04 Single-pipe double-core buckling-restrained brace with diaphragm Expired - Fee Related CN201593250U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101974950A (en) * 2010-11-19 2011-02-16 太原理工大学 Rod type core bar bending restrain steel support
CN102797306A (en) * 2012-07-25 2012-11-28 西安建筑科技大学 Viscous-plastic energy-dissipation damping support
CN103410240A (en) * 2013-03-29 2013-11-27 清华大学 Anti-buckling supporting member with lattice type double-rectangular-pipe cross section
CN103410239A (en) * 2013-03-29 2013-11-27 清华大学 Latticed anti-buckling supporting member provided with double T-shaped cores
CN104563320A (en) * 2014-12-31 2015-04-29 南京工业大学 Assembly type steel-wood buckling restrained brace with vertically embedded FRP reinforcement
CN104612278A (en) * 2015-02-05 2015-05-13 河北华研卓筑加固工程集团有限公司 Three core plate in parallel energy dissipation type buckling-proof support
CN104746767A (en) * 2015-04-10 2015-07-01 南京工业大学 Maintenance-free buckling-free steel-composite material energy-consuming support

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101974950A (en) * 2010-11-19 2011-02-16 太原理工大学 Rod type core bar bending restrain steel support
CN101974950B (en) * 2010-11-19 2012-04-18 太原理工大学 Rod type core bar bending restrain steel support
CN102797306A (en) * 2012-07-25 2012-11-28 西安建筑科技大学 Viscous-plastic energy-dissipation damping support
CN103410240A (en) * 2013-03-29 2013-11-27 清华大学 Anti-buckling supporting member with lattice type double-rectangular-pipe cross section
CN103410239A (en) * 2013-03-29 2013-11-27 清华大学 Latticed anti-buckling supporting member provided with double T-shaped cores
CN103410240B (en) * 2013-03-29 2016-06-15 清华大学 The curvature-prevention support component of the two square tube section of a kind of lattice
CN103410239B (en) * 2013-03-29 2016-06-15 清华大学 A kind of double T font kernel lattice curvature-prevention support component
CN104563320A (en) * 2014-12-31 2015-04-29 南京工业大学 Assembly type steel-wood buckling restrained brace with vertically embedded FRP reinforcement
CN104612278A (en) * 2015-02-05 2015-05-13 河北华研卓筑加固工程集团有限公司 Three core plate in parallel energy dissipation type buckling-proof support
CN104746767A (en) * 2015-04-10 2015-07-01 南京工业大学 Maintenance-free buckling-free steel-composite material energy-consuming support

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Granted publication date: 20100929

Termination date: 20130204