CN105714952A - Bamboo-shaped buckling-restrained brace - Google Patents
Bamboo-shaped buckling-restrained brace Download PDFInfo
- Publication number
- CN105714952A CN105714952A CN201610121121.0A CN201610121121A CN105714952A CN 105714952 A CN105714952 A CN 105714952A CN 201610121121 A CN201610121121 A CN 201610121121A CN 105714952 A CN105714952 A CN 105714952A
- Authority
- CN
- China
- Prior art keywords
- section
- component
- circular
- core component
- restrained brace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a bamboo-shaped buckling-restrained brace, comprising a core component, an external restrained component and reinforced connecting components, wherein the core component is formed by alternately arranging a plurality of circular energy dissipation sections and a plurality of circular elastic sections along a longitudinal coaxial line; each circular elastic section comprises a plurality of middle elastic sections and two end elastic sections; the cross sectional area of each circular energy dissipation section is smaller than that of the corresponding circular elastic section; the core component is positioned in the external restrained component; each reinforced connecting component is composed of a node section, a connecting section and a reinforcing barrel. The bamboo-shaped buckling-restrained brace disclosed by the invention has the advantages that all the circular energy dissipation sections are shorter, and only yield without buckling under the action of an axial force, so that mortar is unnecessarily added or additional parts are unnecessarily arranged for restraining the circular energy dissipation sections, the cross sectional area of each circular energy dissipation section is smaller than that of each circular elastic section, the yielding force is less, and the rigidity requirement on the external restrained component is lower, therefore the external restrained component can be a simple circular casing, and the effects of simple structure, convenience in processing and lighter dead-weight are achieved.
Description
Technical field
The invention belongs to field of civil engineering, relate to a kind of buckling restrained brace for reducing engineering structure seismic response.
Background technology
One of major natural disasters that earthquake is city and building can suffer from, violent earthquake not only causes structural deterioration, also can cause the secondary disasters such as fire and chain effect.And the concept of energy-dissipating and shock-absorbing is referred to and absorbed by energy-dissipating device and dissipation seismic energy, effectively reduce response and the damage of structure, it is to avoid the heavy damage of agent structure, be realize one of important means that structure sets up defences based on condition.Buckling restrained brace is as the energy-dissipating and shock-absorbing component of a kind of superior performance, and the developed country in many shakes such as Japan, the U.S. obtains quick popularization and application, and research and application in China are also at the starting stage.Buckling restrained brace keeps elastic under little shake effect, supporting with generic central the same can provide enough lateral rigidity for structure, under fortification intensity or rarely occurred earthquake effect, the core stressed member of buckling restrained brace is effectively suppressed to avoid entirety or local buckling by restraining tube parts, dissipation energy can be surrendered by tension and compression, such buckling restrained brace can as common support, its power consumption effect can be played again, make agent structure will not destroy or destroy less under geological process, be a kind of ideal energy dissipation mode.
The constraint component of tradition buckling restrained brace is generally formed by steel and Combined concrete, although cost is relatively low, but there is also certain problem: (1) pours into a mould concrete quality, such as degree of compaction, impact by technique is bigger, concrete setting can extend Production Time, reduces production efficiency；(2) being crushed by core component owing to concrete local leakiness may result in local, thus causing core component cripling, reducing buckling restrained brace performance；(3) in order to ensure that core stressed member can free pulling-pressing, core of being everlasting stressed member parcel non-cohesive material, concrete is disengaged with core stressed member surface, give the space that core stressed member is subject to compression swelling offer certain simultaneously, but build with in the process of vibrated concrete, it is difficult to ensure that non-cohesive material wraps up core stressed member according to designing requirement, thus affecting the performance of buckling restrained brace.
Further, all steel is adopted to be about the buckling restrained brace of area of beam, such as publication CN101974950B, its core component is circular bar type core bar, but owing to circular bar type core bar all directions bending rigidity is equal, in any direction all it may happen that wholly or partially flexing, therefore core bar should be retrained along total length by constraint component in all directions comprehensively, therefore detailing requiments is complex, and material usage also can be bigger, in addition buckling restrained brace core component end exists without constraint, and end can occur substantially to rotate thus affecting the stability in the large of support.
Summary of the invention
The invention aims to solve steel arrange difficulty with concrete compaction in the buckling restrained brace of Combined concrete constraint component and non-cohesive material and the constraint component of the impact of performance, circular bar type core bar buckling restrained brace is constructed the problems such as complicated, it is proposed that a kind of bamboo shape buckling restrained brace.
The technical solution used in the present invention is: a kind of bamboo shape buckling restrained brace, including core component, outer constraint component and enhancing connection member；
Described core component is made up of multiple circular energy dissipating sections and round and elastic section alternate setting of longitudinally coaxial line, and round and elastic section includes multiple middle spring section and two end stretch sections, and circular energy dissipating section area of section is less than round and elastic section；
Described core component is positioned at inside described outer constraint component, is close to or tangent inside core component round and elastic section surrounding and outer constraint component, there is space between circular energy dissipating section and outer constraint component；
Described enhancing connection member is made up of node section, linkage section and reinforcement cylinder, described node section is connected supporting with the gusset plate in structure, it is close to outside the end stretch section consolidation of linkage section and core component, reinforcement cylinder parcel constraint component, and the inner side of reinforcement cylinder and constraint component.
As preferably, described circular energy dissipating section is formed along surrounding cutting by round and elastic section.
As preferably, the cross-sectional area of described core component round and elastic section is at least 1.6 times of circular energy dissipating section.
Buckling restrained brace bearing capacity after core component is surrendered can improve further, its superpower main point of two parts: one is the strain hardening coefficient of steel, according to present inventor's cyclic loading test to multiple steel (Q235, Q345, Q390) and existing result by references, the strain hardening coefficient of steel is about 1.42；Two is compression bearing regulation coefficient, major influence factors is the friction effect between buckling restrained brace core component and constraint component and poisson effect, according to present inventor's many experimental results, its maximum can be taken as 1.13, in sum, bamboo shape buckling restrained brace over-strength factor w can be taken as 1.6 (i.e. the values of 1.42 × 1.13).Therefore, in technical solution of the present invention, the cross-sectional area of core component round and elastic section is at least 1.6 times of circular energy dissipating section, it is ensured that the surrender bearing capacity of round and elastic section is more than supporting maximum load capacity, and round and elastic section can remain elastic under load action.
As preferably, the length of the multiple circular energy dissipating section of described core component is gradually increased from two ends toward centre.
Owing to contact produces friction between core component and the constraint component of buckling restrained brace so that core component bar axle power is gradually reduced from two ends toward middle part, therefore, the length of circular energy dissipating section can suitably increase from two ends toward centre.
As preferably, the length of the single circular steel energy dissipating section of described core component is less than its radius 8 times.
Present invention provide that the round and elastic section of bamboo shape buckling restrained brace, only occur surrender that flexing does not occur, therefore the flexing bearing capacity of single circular energy dissipating section is more than the maximum load capacity in given displacement amplitude lower support, is shown below:
Wherein, EtFor the tangent modulus of core component material, I is the cross sectional moment of inertia of circular surrender section, and l is the length of single circular surrender section, and w is for supporting over-strength factor, σyFor backing material yield stress, A is circular surrender section area.By above formula it can be seen that the maximum of the l of buckling restrained brace and material yield strength σyBeing inversely proportional to, the material of buckling restrained brace core component generally employing is Q235, Q345 etc., substitutes into relevant parameter empirical value and radius circular surrender section radius r, can obtain:
l≤8.4r
Therefore specify that the length of single circular energy dissipating section is less than its radius 8 times.
It is close to or tangent inside core component round and elastic section surrounding of the present invention and outer constraint component, constraint component can control core component round and elastic section lateral deformation, thus reaching to suppress the effect of buckling restrained brace overall collapse, circular energy dissipating segment length is shorter simultaneously, the length of single circular energy dissipating section is less than its radius 8 times, thus without the overall collapse occurred in single circular energy dissipating section.
The method have the advantages that
1. the buckling restrained brace that tradition two ends are hinged can rotate, due to end, the overall stability reducing buckling restrained brace, and bamboo shape buckling restrained brace is on basis in light of its own characteristics, propose to strengthen connection member, by being provided with reinforcement cylinder and being arranged in outer constraint component periphery, rotating thus limiting core component end, strengthening the stability of buckling restrained brace.
2. the buckling restrained brace hinged relative to tradition two ends, bamboo shape buckling restrained brace enhancing connection member is provided with reinforcement cylinder, owing to strengthening cylinder, there is greater stiffness, rigid body can be regarded as, the monolithic stability computational length supported can reduce, and the stability bearing capacity of support is obviously enhanced.
3. bamboo shape buckling restrained brace core component is longitudinally distributed alternately constituted by multiple circular energy dissipating section and round and elastic section, each circular energy dissipating segment length is shorter, not flexing is only surrendered under axle power effect, therefore without filling mortar or increasing excessive parts it is retrained between constraint component and circular energy dissipating section so that buckling restrained brace simple structure and easy to process.
4. the circular energy dissipating section area of section of bamboo shape buckling restrained brace core component is less relative to round and elastic section, thus yield force is less, the rigidity requirement of external constraint component is relatively low, because constraint component can be simple circle sleeve pipe in addition, make buckling restrained brace simple structure and deadweight relatively light, convenient installation.
5. the round and elastic section cross-sectional area of bamboo shape buckling restrained brace core component is at least 1.6 times of circular energy dissipating section, 1.6 are about the over-strength factor after core component surrender, therefore round and elastic section remains elastic, contrast tradition buckling restrained brace need to arrange ribbed stiffener to ensure its stability at core component without constraint, although the end stretch section of round and elastic section of the present invention has subregion to be in without restrained condition, but local buckling will not be there is, construct simpler.
6. adopting all steel restraining tube cross section, it is to avoid concrete wet trade, all steel beam column all can make in factory, and machining accuracy is easier to control.
7. owing to frictional force exists, buckling restrained brace core component end axis power is more than middle part axle power, the axle power born according to each circular energy dissipating section determines stability bearing capacity needed for it, makes the length of the multiple circular energy dissipating section of core component be gradually increased toward centre from two ends, can make full use of material.
Accompanying drawing explanation
Fig. 1 is bamboo shape buckling restrained brace core component schematic diagram；
Fig. 2 is bamboo shape buckling restrained brace core component and the link enhancement block diagram of the embodiment of the present invention 1；
Fig. 3 is the bamboo shape buckling restrained brace schematic diagram of the embodiment of the present invention 1；
Fig. 4 is the bamboo shape buckling restrained brace profile of the embodiment of the present invention 1；
Fig. 5 is the bamboo shape buckling restrained brace link enhancement block diagram of the embodiment of the present invention 1；
Fig. 6 is the bamboo shape buckling restrained brace link enhancement feature profile figure of the embodiment of the present invention 1；
Fig. 7 is outer constraint component and the core component cross-sectional view of the embodiment of the present invention 1；
Fig. 8 is the bamboo shape buckling restrained brace core component plan view of the embodiment of the present invention 2；
Compressive deformation schematic diagram when Fig. 9 is to be not provided with strengthening cylinder in bamboo shape buckling restrained brace；
Compressive deformation schematic diagram when Figure 10 is to arrange reinforcement cylinder in bamboo shape buckling restrained brace.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1
As shown in Fig. 1～7: a kind of bamboo shape buckling restrained brace, including core component 1, outer constraint component 2 and enhancing connection member 3, core component 1 is longitudinally distributed alternately by multiple circular energy dissipating section 1-1 and round and elastic section 1-2 and constitutes, circular energy dissipating section 1-1 and round and elastic section 1-2 coaxial line, circular energy dissipating section 1-1 area of section is less than round and elastic section 1-2, formed along surrounding cutting by round and elastic section 1-2, it is internal that core component 1 is positioned at described outer constraint component 2, it is close to or tangent inside core component round and elastic section 1-2 surrounding and outer constraint component 2, round and elastic section 1-2 is made up of the multiple middle spring section of 1-2-1 not being joined directly together and two end stretch section 1-2-2, bigger space is there is between circular energy dissipating section 1-1 and outer constraint component 2, more than the gap between round and elastic section 1-2 and outer constraint component 2, described enhancing connection member 3 is by node section 3-1, linkage section 3-2 and reinforcement cylinder 3-3 is constituted, described node section 3-1 is connected supporting with the gusset plate in structure, linkage section 3-2 and end stretch section 1-2-2 consolidation, strengthen being positioned at inside cylinder 3-3 the periphery of constraint component 2, and with constraint component 2 outside be close to.
The cross-sectional area of the round and elastic section 1-2 of core component is at least 1.6 times of circular energy dissipating section 1-1.
Embodiment 2
As shown in Figure 8: the present embodiment is identical with embodiment 1 remainder, it is different in that the length of the multiple circular energy dissipating section 1-1 of described core component is gradually increased from two ends toward centre.
The length of the single circular energy dissipating section 1-1 of core component is less than its radius 8 times.
As shown in Figures 9 and 10, for bamboo shape buckling restrained brace is not provided with and arrange reinforcement cylinder time compressive deformation schematic diagram.If enhancing connection member being not provided with strengthen cylinder (as shown in Figure 9), core component end stretch section under the end Moment that axle power produces it may happen that surrender, produce plastic hinge and notable corner α, thus the effect of meeting enlarged end moment of flexure, the serious stability in the large reducing support.Strengthening in connection member and arrange (as shown in Figure 10) after reinforcement cylinder, have very big rigidity owing to strengthening cylinder, can regard rigid body as, the monolithic stability computational length L of support can reduce, and the stability bearing capacity of support is obviously enhanced；In addition when supporting base end portion rotates, strengthen coming in contact between cylinder and constraint component, it is possible to the rotation of restriction core component end stretch section, it is to avoid the generation of plastic hinge, reduce the end moment of flexure adverse effect to supporting monolithic stability.
It should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.The all available prior art of each ingredient not clear and definite in the present embodiment is realized.
Claims (5)
1. a bamboo shape buckling restrained brace, it is characterised in that: include core component, outer constraint component and strengthen connection member；
Described core component is made up of multiple circular energy dissipating sections and round and elastic section alternate setting of longitudinally coaxial line, and round and elastic section includes multiple middle spring section and two end stretch sections, and circular energy dissipating section area of section is less than round and elastic section；
Described core component is positioned at inside described outer constraint component, is close to or tangent inside core component round and elastic section surrounding and outer constraint component, there is space between circular energy dissipating section and outer constraint component；
Described enhancing connection member is made up of node section, linkage section and reinforcement cylinder, described node section is connected supporting with the gusset plate in structure, it is close to outside the end stretch section consolidation of linkage section and core component, reinforcement cylinder parcel constraint component, and the inner side of reinforcement cylinder and constraint component.
2. bamboo shape buckling restrained brace according to claim 1, it is characterised in that: described circular energy dissipating section is formed along surrounding cutting by round and elastic section.
3. bamboo shape buckling restrained brace according to claim 1, it is characterised in that: the cross-sectional area of described core component round and elastic section is at least 1.6 times of circular energy dissipating section.
4. bamboo shape buckling restrained brace according to claim 1, it is characterised in that: the length of the multiple circular energy dissipating section of described core component is gradually increased from two ends toward centre.
5. bamboo shape buckling restrained brace according to claim 1, it is characterised in that: the length of the single circular steel energy dissipating section of described core component is less than its radius 8 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121121.0A CN105714952B (en) | 2016-03-03 | 2016-03-03 | Bamboo shape buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610121121.0A CN105714952B (en) | 2016-03-03 | 2016-03-03 | Bamboo shape buckling restrained brace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105714952A true CN105714952A (en) | 2016-06-29 |
| CN105714952B CN105714952B (en) | 2018-05-15 |
Family
ID=56156434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610121121.0A Active CN105714952B (en) | 2016-03-03 | 2016-03-03 | Bamboo shape buckling restrained brace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105714952B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760854A (en) * | 2017-01-25 | 2017-05-31 | 东南大学 | Rectilinear laemodipodiform pole power consumption bar |
| CN106760855A (en) * | 2017-01-25 | 2017-05-31 | 东南大学 | Laemodipodiform pole power consumption bar |
| CN106836927A (en) * | 2017-01-25 | 2017-06-13 | 东南大学 | Pole power consumption bar |
| CN108036344A (en) * | 2018-01-03 | 2018-05-15 | 福建龙净环保股份有限公司 | Flue structure, tube stay structure and its connector |
| CN109339545A (en) * | 2018-11-28 | 2019-02-15 | 上海材料研究所 | Buckling-restrained energy-dissipation |
| CN112443047A (en) * | 2020-12-01 | 2021-03-05 | 上海烟草集团有限责任公司 | Pre-stressed prefabricated bamboo joint type buckling restrained brace device |
| CN113175115A (en) * | 2021-05-11 | 2021-07-27 | 四川大学 | Double-rigidity buckling restrained damper |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005194794A (en) * | 2004-01-08 | 2005-07-21 | Shimizu Corp | Brace damper |
| CN101413298A (en) * | 2008-11-19 | 2009-04-22 | 东南大学 | Light triple-heavy metal circular tube flexion restriction support energy dissipating machine |
| CN202672400U (en) * | 2012-01-12 | 2013-01-16 | 郭奇 | Novel bamboo type steel tube buckling restricting energy consumption support |
| CN102926478A (en) * | 2012-10-25 | 2013-02-13 | 沈阳建筑大学 | U-bar isolation anti-buckling energy dissipation support |
| CN103711221A (en) * | 2013-12-30 | 2014-04-09 | 北京工业大学 | Box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component |
| CN103741829A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Novel flexion and energy consumption preventing limit support component of I-shaped variable cross-section steel core of bolt-assembled rectangular steel tube |
| CN203569720U (en) * | 2013-11-05 | 2014-04-30 | 南京工业大学 | Self-resetting triple steel pipe buckling restrained brace |
-
2016
- 2016-03-03 CN CN201610121121.0A patent/CN105714952B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005194794A (en) * | 2004-01-08 | 2005-07-21 | Shimizu Corp | Brace damper |
| CN101413298A (en) * | 2008-11-19 | 2009-04-22 | 东南大学 | Light triple-heavy metal circular tube flexion restriction support energy dissipating machine |
| CN202672400U (en) * | 2012-01-12 | 2013-01-16 | 郭奇 | Novel bamboo type steel tube buckling restricting energy consumption support |
| CN102926478A (en) * | 2012-10-25 | 2013-02-13 | 沈阳建筑大学 | U-bar isolation anti-buckling energy dissipation support |
| CN203569720U (en) * | 2013-11-05 | 2014-04-30 | 南京工业大学 | Self-resetting triple steel pipe buckling restrained brace |
| CN103711221A (en) * | 2013-12-30 | 2014-04-09 | 北京工业大学 | Box iron grooving type H-shaped variable-cross-section steel core buckling-prevention limiting and energy-consumption supporting component |
| CN103741829A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Novel flexion and energy consumption preventing limit support component of I-shaped variable cross-section steel core of bolt-assembled rectangular steel tube |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760854A (en) * | 2017-01-25 | 2017-05-31 | 东南大学 | Rectilinear laemodipodiform pole power consumption bar |
| CN106760855A (en) * | 2017-01-25 | 2017-05-31 | 东南大学 | Laemodipodiform pole power consumption bar |
| CN106836927A (en) * | 2017-01-25 | 2017-06-13 | 东南大学 | Pole power consumption bar |
| CN106760854B (en) * | 2017-01-25 | 2019-01-25 | 东南大学 | Rectilinear laemodipodiform pole energy consumption bar |
| CN108036344A (en) * | 2018-01-03 | 2018-05-15 | 福建龙净环保股份有限公司 | Flue structure, tube stay structure and its connector |
| CN108036344B (en) * | 2018-01-03 | 2023-07-14 | 福建龙净环保股份有限公司 | Flue structure, pipe support structure and connecting piece thereof |
| CN109339545A (en) * | 2018-11-28 | 2019-02-15 | 上海材料研究所 | Buckling-restrained energy-dissipation |
| CN112443047A (en) * | 2020-12-01 | 2021-03-05 | 上海烟草集团有限责任公司 | Pre-stressed prefabricated bamboo joint type buckling restrained brace device |
| CN113175115A (en) * | 2021-05-11 | 2021-07-27 | 四川大学 | Double-rigidity buckling restrained damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105714952B (en) | 2018-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105714952A (en) | Bamboo-shaped buckling-restrained brace | |
| CN206309097U (en) | The replaceable assembled buckling restrained brace of section is surrendered after one kind shake | |
| CN201762818U (en) | FRP-rubber-steel compound pipe concrete structure | |
| CN102808464B (en) | Fiber pre-stretched rod type self-centering steel buckling-restrained brace | |
| CN105735504B (en) | Rectangle ring buckling restrained brace | |
| CN110067425B (en) | High-shock-resistance buckling-restrained brace | |
| CN101463634A (en) | Buckling-restrained brace with end having energy dissipation lead box and method for producing the same | |
| CN101967853B (en) | Fiber reinforce plastic (FRP)-rubber-steel composite pipe concrete structure | |
| CN101974950B (en) | Rod type core bar bending restrain steel support | |
| CN104005490B (en) | Anti-buckling limit support member for reinforcing post-yield stiffness | |
| CN106760854B (en) | Rectilinear laemodipodiform pole energy consumption bar | |
| CN102852245A (en) | Fiber pre-drawing-rod type self-centering round tube buckling restrained support | |
| CN106836927B (en) | Pole energy consumption bar | |
| CN205399715U (en) | Serial -type bamboo shape buckling restrained brace | |
| CN106499240B (en) | Telescopic anti-buckling support with multistage buckling strength and positioning metal rubber energy consumption ring | |
| CN105604205B (en) | Modularization bamboo shape buckling restrained brace | |
| CN201874118U (en) | Bar-type core rod buckling-restrained steel brace | |
| CN106760855B (en) | Laemodipodiform pole energy consumption bar | |
| CN113027213A (en) | Assembled buckling-restrained energy-dissipation brace | |
| CN206458146U (en) | Pole power consumption bar | |
| CN104532978B (en) | A kind of anti-buckling support of vierendeel truss restricted type | |
| CN106049699A (en) | Sleeve restraint anti-buckling support provided with staggered pyramid-shaped energy dissipation units | |
| CN106639463B (en) | A kind of casing buckling induction support with oblique screw type induction unit | |
| CN201343782Y (en) | Combined coupling beam for inclined steel bracing strut concrete shear wall | |
| CN205677329U (en) | The anti-buckling support of square-section two-stage surrender |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |