CN105927018A - Building structure all-steel buckling-restrained brace in reduced local strength, and manufacturing method thereof - Google Patents
Building structure all-steel buckling-restrained brace in reduced local strength, and manufacturing method thereof Download PDFInfo
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- CN105927018A CN105927018A CN201610257938.0A CN201610257938A CN105927018A CN 105927018 A CN105927018 A CN 105927018A CN 201610257938 A CN201610257938 A CN 201610257938A CN 105927018 A CN105927018 A CN 105927018A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention discloses a building structure all-steel buckling-restrained brace in reduced local strength. The all-steel buckling-restrained brace comprises a line-shaped steel core whose section is equal, and the line-shaped steel core is clamped and fixed between two pieces of channel steel which are arranged back to back. The two pieces of channel steel are fixedly connected together through a plurality of connecting steel plates which stretch across the line-shaped steel core. The surfaces of the line-shaped steel core, corresponding to the channel steel, are provided with coatings without bonding materials. The middle part of the line-shaped steel core is performed by heat treatment, to form a low-strength section. Two sides of two ends of the line-shaped steel core are respectively provided with a stiffening rib. The invention also discloses a manufacturing method for the building structure all-steel buckling-restrained brace in reduced local strength. The method can make existing high-strength hot-rolled steel have performance of a low yield point steel inner core, so as to satisfy requirement of buckling-restrained bracing. The buckling-restrained brace uses the existing high-strength hot-rolled steel with the low yield point steel inner core performance, and prevents problems caused by using a variable cross-section inner core.
Description
Technical field
The present invention relates to anti-buckling support in a kind of building structure and preparation method thereof, particularly relate to a kind of local strength
Anti-buckling support of building structure all steel reduced and preparation method thereof.
Background technology
In building structure, for improving the anti-side rigidity of structure, it will usually arrange the anti-side components such as support in the structure.Support
Of a great variety, traditional when being supported on coming earthquake, lack out of plane constraint owing to supporting and there is the problem of buckle in compression,
Support can relatively early occur complete buckling to lose efficacy, and then seismic force effects makes under structural bearing capacity on structural key component
Even there is serious destruction in fall.On the basis of traditional support, the problem existed for it, this is new in anti-buckling support
Type supporting form engenders and develops, and the structure of this support includes core surrender power consumption unit, the buckling-restrained list of periphery
Unit and sliding unit between the two.Owing to the buckling-restrained unit of periphery is that core cell provides stronger sidewise restraint,
Thus avoid the overall buckle in compression of core power consumption unit so that it is when pressurized based on inner core surrender, simultaneous
Many ripples cripling phenomenon so that core cell arranges mechanical property and load-carrying properties phase under the conditions of stretching and compression two kinds
Seemingly, the surrender energy dissipation capacity of support is added.
Anti-buckling support is high due to its structural effectiveness, and energy dissipation capacity is strong, is used in domestic and international multinomial engineering.But,
At home, anti-buckling support mostly is from external import, and its manufacturing process etc. all belongs to secrecy, this restrict anti-buckling of China
The application of support technology and development.
Be steel for this support, more domestic scholars and enterprise development inner core, outside use steel pipe and including
Fill concrete or the anti-buckling support of mortar between core and steel pipe, simultaneously in order to meet surrender and the inelastic deformation of core
Can betide restrained section, it is achieved pinpoint or determine the surrender in region, it is non-etc. that this anti-buckling support is substantially all employing
The mode of cross section inner core, strengthens core end cross-sectional and strengthens, or weakened in the section of power consumption cross section, center so that core
Relatively weak such that it is able to enter yield situation early than other sections.Also scholar is had to develop the anti-buckling support of all steel, but
Its inner core still designs for variable cross-section, makes core become more weak section of intensity.Finding in actual applications, both supports
Owing to inner core exists local strengthening or the problem of central segment local weakening, even if having employed certain smooth section to eliminate stress
Concentrate, still there will be ribbed stiffener welding ends, changeover portion and segment of cutting brittle fracture, the phenomenons such as flexion position is uncontrollable,
Virtual condition is caused not to be inconsistent with design point.Further, since need central segment uses the modes such as cutting reduce its intensity,
Can cause a certain degree of waste of inner core steel, and former supports due to needs casting concrete etc., the change of its inner core cuts
Component will be made to construct relative complex for surface construction and fabrication cycle is long.These problems all make anti-buckling support to exist smoothly
Domestic it be widely used and develop.
Therefore, advocate the theories such as positive steel, green building in country in the environment of, develop and can use the common heat of China
Steel rolling material makes, and without using cutting etc. that the novel of processing mode of steel waste and sectional dimension change can be caused to prevent
Buckling support, has particularly important meaning and necessity.
Summary of the invention
The building structure all steel that the present invention solves technical problem present in known technology and provide a kind of local strength to reduce
Anti-buckling support and preparation method thereof, the method can make existing high-strength hot-strip possess the performance of Low Yield Point Steel inner core,
Meeting the needs of anti-buckling support, this is anti-buckling supports to use and this possesses the existing high heat-flash of core performance in Low Yield Point Steel
Steel rolling material is it can be avoided that because using the problem that caused of variable cross-section inner core.
The present invention solves that the technical scheme that technical problem is taked present in known technology is: a kind of local strength
The anti-buckling support of building structure all steel reduced, including the yi word pattern steel core that an elongated cross section is equal, described yi word pattern steel
Core is by clamping between the channel-section steel of two back-to-back settings, and two described channel-section steels are by across on described yi word pattern steel core
Multiple junction steel plates are fixed together, and are provided with without viscous on the described yi word pattern steel core surface with described channel-section steel corresponding part
Knot material coating, the mid portion of described yi word pattern steel core is heat-treated as low strong section；Described channel-section steel and described yi word pattern steel core
Axis in the same plane；Be respectively provided with a ribbed stiffener in the both sides of two ends of described yi word pattern steel core, described in put more energy into
Rib is vertical with described yi word pattern steel core.
The length of described yi word pattern steel core is more than described yi word pattern steel core more than the length of described channel-section steel, the length of described channel-section steel
The length of low strong section.
Described junction steel plate is bolted with described channel-section steel.
The present invention solves that another technical scheme that technical problem is taked present in known technology is: above-mentioned local is strong
The preparation method of the anti-buckling support of building structure all steel that degree reduces, employing following steps :) equal in elongated cross section
Yi word pattern steel core two ends arrange ribbed stiffener according to detailing requiments；Two) the yi word pattern steel core mid portion equal to elongated cross section
Being heat-treated so that it is mid portion intensity reduces, ductility increases；Three) yi word pattern steel core is processed, remove it
Surface oxide layer, and brushing non-cohesive material on its surface with channel-section steel corresponding part；Four) by back-to-back for two channel-section steels
It is individually positioned in the both sides of yi word pattern steel core and positions, making the axis of channel-section steel and yi word pattern steel core at grade,
Then use the junction steel plate across yi word pattern steel core that two channel-section steels are linked together and are fixedly clamped by yi word pattern steel core
Between which, the most i.e. completes the making of the anti-buckling support of building structure all steel that local strength reduces.
Described step 2) Technology for Heating Processing be: the most at ambient temperature the mid portion of yi word pattern steel core is heated to
1000 DEG C, it is incubated 20 minutes, then uses the rate of temperature fall of 30 degrees Celsius per hour to lower the temperature, be down to 500 degrees Celsius,
Naturally cool to environment temperature afterwards.
The present invention has the advantage that with good effect: 1) employed in support energy consumption inner core, steel are the hot rolling that China commonly uses
Steel, source is wide and low price, breaches that China's low surrender steel type is less and expensive bottleneck；2) whole
Support and all use steel to make, environmental protection, can after contributing to alleviating the problem that China's steel are superfluous, and experience earthquake
To recycle；3) the internal elongated cross section of steel core is identical, it is not necessary to carry out the operations such as cutting, it is to avoid the waste of material；4)
The channel-section steel of steel core both sides uses junction steel plate to be connected by bolt, has on the one hand saved material and steel core is produced certain pact
Shu Zuoyong, on the other hand junction steel plate is less, facilitates single workman assemble and connect, simultaneously can also be by connecting
The state of internal steel core is observed in space between steel plate；5) support has good energy dissipation capacity, it is possible to achieve determining of steel core
Point surrender, and avoid stress mutation phenomenon by the gradually change of steel strength, avoid steel core due to cutting etc. simultaneously
The problem that the stress collection occurred neutralizes brittle fracture；6) integrated support production process is relatively simple, and connection predominantly bolt is even
Connecing, processing and fabricating is convenient, and fabrication cycle is short, high-efficiency and economic.
Accompanying drawing explanation
Fig. 1 is the overall schematic three dimensional views of the building structure all steel buckling-resistant support structure that a kind of local strength of the present invention reduces；
Fig. 2 is the floor map of Fig. 1；
Fig. 3 is the positive elevational schematic view of Fig. 1；
Fig. 4 is the side elevation schematic diagram of Fig. 1；
Fig. 5 is the sectional drawing of Section A-A in Fig. 1；
Fig. 6 is steel core schematic diagram of the present invention；
Fig. 7 be a kind of local strength of the present invention reduce building structure all steel anti-buckling support manufacturing method step two) show
It is intended to；
Fig. 8 is the sectional drawing of Fig. 7.
In figure: 1, yi word pattern steel core, 2, channel-section steel, 3, junction steel plate, 4, bolt, 5, ribbed stiffener, 6, soap-free emulsion polymeization
Material coating, 7, low strong section, 8, unprocessed section, 9, program-controlled heating device.
Detailed description of the invention
For the summary of the invention of the present invention, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate accompanying drawing
Describe in detail as follows:
Referring to Fig. 1～Fig. 8, the anti-buckling support of building structure all steel that a kind of local strength reduces, including one elongated section
The yi word pattern steel core 1 that face is equal, described yi word pattern steel core 1 by clamping between the channel-section steel 2 of two back-to-back settings, two
Described in root, channel-section steel 2 is by being fixed together across the multiple junction steel plates 3 on described yi word pattern steel core 1, described one
Font steel core 1 is provided with non-cohesive material coating 6, described yi word pattern steel core 1 on the surface of described channel-section steel 2 corresponding part
Mid portion be heat-treated as low strong section 7；The axis of described channel-section steel 2 and described yi word pattern steel core 1 is in the same plane；
It is respectively provided on two sides with ribbed stiffener 5, described ribbed stiffener 5 and described yi word pattern in two ends of described yi word pattern steel core 1
Steel core 1 is vertical.
Refer to Fig. 1～Fig. 8, the building structure all steel anti-buckling support manufacturing method that above-mentioned local strength reduces, use with
Lower step:
One) both sides of two ends of the yi word pattern steel core 1 equal in elongated cross section arrange ribbed stiffener 5 according to detailing requiments；
Two) mid portion of the yi word pattern steel core 1 equal to elongated cross section is heat-treated so that it is mid portion intensity drops
Low, ductility increases；
Three) yi word pattern steel core 1 is carried out sandblasting Shot Blasting, remove its surface oxide layer, and in its portion corresponding with channel-section steel
Brushing non-cohesive material on the surface divided, to form non-cohesive material coating 6；
Four) two channel-section steels 2 it is individually positioned in yi word pattern steel core 1 both sides and positions, making channel-section steel 2 and yi word pattern steel
The axis of core 1 in the same plane, then uses the junction steel plate 3 across yi word pattern steel core 1 to be connected by two channel-section steels 2
It is fixedly clamped between which together and by yi word pattern steel core 1, the most i.e. completes the building structure that local strength reduces
The making of the anti-buckling support of all steel.
Refer to Fig. 1～Fig. 6, when using said method to carry out anti-buckling support manufacturing, first according to structure to support
Require to calculate and determine steel core 1 and the sectional dimension of channel-section steel 2, and determine length L of steel core 11Length with both sides channel-section steel 2
L0, the requirement surrendering position according to yi word pattern steel core 1 when consuming energy determines position and length L of low strong section 72, and typically want
Seek L1＞ L0And L2＜ L0.Steel plate is used to make yi word pattern steel core 1, and the both sides of two ends at yi word pattern steel core 1
It is respectively welded ribbed stiffener 5.
Then being heat-treated the mid portion-low strong section 7 of steel core 1, refer to Fig. 7～Fig. 8, heat treatment method is:
Program-controlled heating device 9 parcel needs are used to carry out the mid portion of the yi word pattern steel core 1 being heat-treated, first at ambient temperature
Program-controlled heating, to 1000 degrees Celsius, keeps 20 minutes, then uses the rate of temperature fall of 30 degrees Celsius per hour to lower the temperature,
When being down to 500 degrees centigrade, close program-controlled heating device 9, wait that yi word pattern steel core 1 is cooled to environment temperature, i.e. complete
The special thermal treatment technique of yi word pattern steel core 1.
Then yi word pattern steel core 1 is carried out sandblasting Shot Blasting, removes the oxide layer on its surface, and brushing non-cohesive material,
After brushing, two channel-section steels 2 are individually positioned in the both sides of steel core 1 and position fixing, it is ensured that steel core 1 and channel-section steel 2
Axis is in same level.Junction steel plate 3 is placed on the corresponding position of channel-section steel 2, uses bolt 4 will connect steel
Plate 3 and channel-section steel 2 are fixed, and also complete the fixing of both sides channel-section steel 2 simultaneously, the most i.e. complete building of local strength's reduction
The making of the anti-buckling support of building structure all steel, arranging connecting plate at the two ends supported can be attached with structure corresponding site.
Be connected in engineering structure when being supported on coming earthquake, due to mid portion steel strength reduce so that a word
Shaped steel core 1 mid portion intensity produces local and weakens, thus can first surrender under seismic force effects, it is achieved surrender
Power consumption, reduces seismic force to the destruction of other components of agent structure and impact, it is ensured that the safety of structure.Meanwhile, in earthquake
After end, can conveniently be observed the flexing situation of steel core 1 by the space between junction steel plate 3, determine and be
Support is replaced by no needs.
Although the preferred embodiments of the present invention being described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned
Detailed description of the invention, above-mentioned detailed description of the invention is only schematically, is not restrictive, this area general
Logical technical staff is under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection,
Can be to make a lot of form, within these belong to protection scope of the present invention.
Claims (5)
1. the anti-buckling support of building structure all steel that a local strength reduces, it is characterised in that include an elongated cross section
Equal yi word pattern steel core, described yi word pattern steel core by clamping between the channel-section steel of two back-to-back settings, two described grooves
Steel is by being fixed together across the multiple junction steel plates on described yi word pattern steel core, at described yi word pattern steel core with described
Being provided with non-cohesive material coating on the surface of channel-section steel corresponding part, the mid portion of described yi word pattern steel core is heat-treated as low
Strong section；The axis of described channel-section steel and described yi word pattern steel core is in the same plane；Two ends at described yi word pattern steel core
Be respectively provided on two sides with ribbed stiffener, described ribbed stiffener is vertical with described yi word pattern steel core.
The anti-buckling support of building structure all steel that the most according to claim 1, local strength reduces, it is characterised in that institute
State the length of the yi word pattern steel core length more than described channel-section steel, the length of described channel-section steel more than described yi word pattern steel core low by force
The length of section.
The anti-buckling support of building structure all steel that the most according to claim 1, local strength reduces, it is characterised in that institute
State junction steel plate to be bolted with described channel-section steel.
4. the preparation method of the anti-buckling support of building structure all steel that local strength reduces as claimed in claim 1, its feature
It is, employing following steps:
One) both sides of two ends of the yi word pattern steel core equal in elongated cross section arrange ribbed stiffener according to detailing requiments；
Two) the yi word pattern steel core mid portion that elongated cross section is equal is heat-treated so that it is mid portion intensity reduces,
Ductility increases；
Three) yi word pattern steel core is processed, remove its surface oxide layer, and on its surface with channel-section steel corresponding part
Brushing non-cohesive material；
Four) by two back-to-back both sides being individually positioned in yi word pattern steel core of channel-section steel and position, channel-section steel and yi word pattern are made
The axis of steel core at grade, then uses the junction steel plate across yi word pattern steel core to be linked together by two channel-section steels
And yi word pattern steel core is fixedly clamped between which, the building structure all steel the most i.e. completing local strength's reduction is anti-in the wrong
The bent making supported.
The building structure all steel anti-buckling support manufacturing method that the most according to claim 4, local strength reduces, its feature
Be, described step 2) Technology for Heating Processing be: the most at ambient temperature the mid portion of yi word pattern steel core is heated
To 1000 DEG C, it is incubated 20 minutes, then uses the rate of temperature fall of 30 degrees Celsius per hour to lower the temperature, be down to 500 degrees Celsius,
Naturally cool to environment temperature afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257938.0A CN105927018A (en) | 2016-04-21 | 2016-04-21 | Building structure all-steel buckling-restrained brace in reduced local strength, and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257938.0A CN105927018A (en) | 2016-04-21 | 2016-04-21 | Building structure all-steel buckling-restrained brace in reduced local strength, and manufacturing method thereof |
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| CN105927018A true CN105927018A (en) | 2016-09-07 |
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| CN201610257938.0A Pending CN105927018A (en) | 2016-04-21 | 2016-04-21 | Building structure all-steel buckling-restrained brace in reduced local strength, and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558751A (en) * | 2017-05-19 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | A kind of bolted steel pipe column of use and its reinforcement means reinforced using channel-section steel |
| CN114182843A (en) * | 2021-12-28 | 2022-03-15 | 中交鹭建有限公司 | Buckling restrained brace adopting W-M fractal function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107558751A (en) * | 2017-05-19 | 2018-01-09 | 广东电网有限责任公司电力科学研究院 | A kind of bolted steel pipe column of use and its reinforcement means reinforced using channel-section steel |
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| CN114182843B (en) * | 2021-12-28 | 2024-02-23 | 中交鹭建有限公司 | Buckling restrained brace adopting W-M fractal function |
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Application publication date: 20160907 |