CN104100016B - The pre-stretch-draw installation method of buckling restrained brace - Google Patents
The pre-stretch-draw installation method of buckling restrained brace Download PDFInfo
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- CN104100016B CN104100016B CN201410315119.8A CN201410315119A CN104100016B CN 104100016 B CN104100016 B CN 104100016B CN 201410315119 A CN201410315119 A CN 201410315119A CN 104100016 B CN104100016 B CN 104100016B
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- buckling restrained
- restrained brace
- stretch
- draw
- vierendeel girder
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Abstract
The present invention provides the pre-stretch-draw installation method of a kind of buckling restrained brace, after Rotating fields construction completes, while subsequent structural construction, connect fixing for the connection node at the fixing end of buckling restrained brace and the first Vierendeel girder, reserved elastic deformation space between the connection node at its stretching end and the second Vierendeel girder；By stretch-draw jack, buckling restrained brace is carried out initial tensioning；After the stretching force being subject at buckling restrained brace reaches predetermined stretch-draw value, the stretch-draw value supporting same floor carries out two-wheeled correction and adjusts, and to ensure that the support of same floor all reaches predetermined stretch-draw value, then with corresponding connection node, stretching end is fixed connection；Finally buckling restrained brace is put and open.This installation method efficiently reduces vertical load and the adverse effect of pressurized biasing, makes buckling restrained brace performance is more easy to the bearing capacity that reaches capacity, it is ensured that it gives full play to performance, shortens installation period, decreases construction cost.
Description
Technical field
The present invention relates to building structure aseismatic prevention technique field, particularly relate to the pre-stretch-draw installation side of a kind of buckling restrained brace
Method.
Background technology
Buckling restrained brace is a kind of combination anti-side and consumes energy in the novel damping component of one, and it not only can provide under little shake
Required anti-side rigidity, and surrender power consumption can be carried out under big shake, can enter prior to main structure body as additional dissipative member
Enter mecystasis, dissipation inputting seismic energy, thus protect agent structure not to be damaged, be " electric fuse " worthy of the name in structure.
The operation principle of buckling restrained brace is the clearest and the most definite with force-mechanism.It retrains axially loaded by restraining tube parts
Parts, it is ensured that it does not occur overall collapse to destroy and local buckling failure when pressurized, owing to uniaxial force parts are in axle power effect
Lower surrender and non-flexing, therefore show the excellent mechanical property that tension and compression are symmetrical, and surrender, by this tension and compression, the earthquake that dissipates in a large number
Input energy, is the one of metal energy-dissipating and shock-absorbing component.
Generally, buckling restrained brace can undertake certain vertical load more or less, and this is due to buckling restrained brace
Before installation puts in place, place Rotating fields is unable to reach caused by sedimentation completely.Under this vertical load, buckling restrained brace is anti-in participation
Having created certain initial compressive stress before side, this can cause its pressurized to bias, and hysteretic loop is the fullest, and energy dissipation capacity subtracts
Weak, and be easier to reach its ultimate bearing capacity and destroy.Additionally, buckling restrained brace can not be pacified with agent structure simultaneously
Dress, but need agent structure all to complete and mainly sedimentation terminate after, buckling restrained brace just can be installed, thus install
Long in time limit.
Summary of the invention
The shortcoming of prior art in view of the above, the technical problem to be solved in the present invention is to provide one to can solve the problem that flexing is about
The pressurized biasing of bundle branch support, improves its support performance, shortens the pre-stretch-draw installation method of the buckling restrained brace of installation period.
For achieving the above object and other relevant purposes, the present invention provides the pre-stretch-draw installation method of a kind of buckling restrained brace, bag
Include step: A, the Rotating fields of described buckling restrained brace place floor includes the first Vierendeel girder, the second Vierendeel girder and this layer of post,
Described first Vierendeel girder and described second Vierendeel girder are arranged horizontally and all parallel to one another, and described layer post is fixedly connected on described first frame
Set a roof beam in place and between the second Vierendeel girder；After described Rotating fields construction completes, while subsequent structural construction, by described flexing about
Connection node on fixing end and described first Vierendeel girder of bundle branch support is fixing to be connected, described buckling restrained brace stretching end with
Reserved elastic deformation space between the connection node of described second Vierendeel girder；B, the stretching end of described buckling restrained brace are provided with
Stretch-draw otic placode, is provided with stretching rack at the connection node of described second Vierendeel girder, described stretching rack is fixed on connecting joint by fixture
At Dian, it is connected stretch-draw jack at described stretch-draw otic placode between described stretching rack, by described stretch-draw jack to described flexing
Constraint support carries out initial tensioning；After C, the stretching force being subject at described buckling restrained brace reach predetermined stretch-draw value, to same institute
The stretch-draw value of the buckling restrained brace stating floor carries out two-wheeled correction and adjusts, to ensure the buckling restrained brace of same described floor all
Reach predetermined stretch-draw value, then connect fixing with the connection node of described second Vierendeel girder for the stretching end of described buckling restrained brace；
D, described buckling restrained brace is put.
Preferably, if the described Rotating fields of described floor is before described buckling restrained brace is installed, not form enough anti-side yet firm
Degree and bearing capacity, it is necessary in pairs and described buckling restrained brace is carried out initial tensioning simultaneously, if the described Rotating fields of described floor
Form enough anti-side rigidity and bearing capacity has then carried out single tendon stretch to described buckling restrained brace.
Preferably, in described step A, the connection node on the fixing end of described buckling restrained brace and described first Vierendeel girder it
Between for welding or bolt connect.
Preferably, reserved between stretching end and the connection node of described second Vierendeel girder of described buckling restrained brace described elasticity
The size of deformation space is calculated by stretch-draw value.
Preferably, the described stretch-draw otic placode of described buckling restrained brace by the way of welding with the central layer of described buckling restrained brace
It is connected, is provided with stretch-draw hole at described stretch-draw otic placode in order to connect described stretch-draw jack.
Preferably, described predetermined stretch-draw value according to described buckling restrained brace be subject to by load action, differential settlement, welding
The stagnation pressure force value that residual stress causes is determined.
Preferably, in described step C, after the correction carrying out the stretch-draw value of described buckling restrained brace has adjusted, by institute
State the stretching end of buckling restrained brace together with the connecting joint means of spot welds of described second Vierendeel girder.
Preferably, in described step D, after completing described buckling restrained brace is put, remove described stretching rack and
Draw otic placode.
As it has been described above, the pre-stretch-draw installation method of the buckling restrained brace of present invention offer, have the advantages that according to base
This mechanics principle, first can be connected the fixing end of buckling restrained brace with Rotating fields before Rotating fields is not fully complete main sedimentation,
Then the stretching end at buckling restrained brace carries out initial tensioning by stretch-draw jack, and the stretching force being subject at buckling restrained brace reaches
After predetermined value, then the stretch-draw value of the buckling restrained brace of same described floor is carried out two-wheeled correction adjustment, about in flexing finally
It is put after completing and opens by stretching end and the corresponding connecting joint means of spot welds of bundle branch support.Tension produced by pre-stretch-draw can
The compressive stress caused with negative function vertical load on buckling restrained brace, thus can effectively reduce or avoid vertical load
With the pressurized biasing adverse effect to buckling restrained brace performance, buckling restrained brace is made to be more easy to reach its ultimate bearing capacity so that it is
Hysteretic loop is fuller, and energy dissipation capacity strengthens, it is ensured that buckling restrained brace can give full play to its performance.And this installation method
Simple, installation period shortens dramatically, and decreases construction cost.
Accompanying drawing explanation
Fig. 1 is shown as the flow chart of steps of the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides.
Fig. 2 is shown as the schematic diagram of the pre-stretch-draw installation method media layer damage of the buckling restrained brace that the present invention provides.
Fig. 3 is shown as the fixing end and the of buckling restrained brace in the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides
Connection node on one Vierendeel girder is fixing to be connected, and is reserved with elastic deformation space between the connection node on stretching end and the second Vierendeel girder
Schematic diagram.
Fig. 4 is shown as the stretching end of buckling restrained brace in the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides and opens
Stretch-draw jack is set between trying to stop people from fighting each other buckling restrained brace is carried out the schematic diagram of stretch-draw.
Fig. 5 is shown as stretch-draw and correction adjustment in the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides and completes post-stretching
End fixes, with the second Vierendeel girder, the schematic diagram being connected.
Fig. 6 is shown as in the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides putting buckling restrained brace
Schematic diagram.
Element numbers explanation
1 Rotating fields
11 first Vierendeel girders
12 second Vierendeel girders
13 layer posts
14 connect node
2 buckling restrained braces
21 fixing ends
22 stretching ends
23 stretch-draw otic placodes
3 elastic deformation spaces
4 stretching racks
5 stretch-draw jacks
S100～S103 step
Detailed description of the invention
Below by way of specific instantiation, embodiments of the present invention being described, those skilled in the art can be by disclosed by this specification
Content understand other advantages and effect of the present invention easily.The present invention can also be added by the most different detailed description of the invention
To implement or application, the every details in this specification can also be based on different viewpoints and application, in the essence without departing from the present invention
Various modification or change is carried out under god.
Refer to Fig. 1 to Fig. 6.It should be noted that the diagram provided in the present embodiment illustrates the present invention the most in a schematic way
Basic conception, the most graphic in component count time only display with relevant assembly in the present invention rather than is implemented according to reality, shape
And size drafting, during its actual enforcement, the kenel of each assembly, quantity and ratio can be a kind of random change, and its assembly layout
Kenel is likely to increasingly complex.
Pre-stretch-draw installation method flexing be applicable to steel construction and type steel-copper friction pair of the buckling restrained brace that the present invention provides
The installation that constraint supports.Buckling restrained brace is installed in the Rotating fields of building, and Fig. 2 show the schematic diagram of Rotating fields.Such as figure
Shown in 2, Rotating fields 1 includes the first Vierendeel girder the 11, second Vierendeel girder 12 and this layer of post 13.First Vierendeel girder 11 and the second frame
Setting a roof beam in place 12 arranged horizontally and all parallel to one another, this layer of post 13 is fixedly connected between the first Vierendeel girder 11 and the second Vierendeel girder 12.
As shown in Figures 2 to 6, buckling restrained brace 2 includes that fixing end 21 and stretching end 22 two connect end, buckling restrained brace
2 are connected between the first Vierendeel girder 11 and the second Vierendeel girder 12.
For ease of the fixing of buckling restrained brace 2 and installation, the first Vierendeel girder 11 and the second Vierendeel girder 12 are provided with connection
Node 14.In the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides, the fixing end of buckling restrained brace 2 21 with
The connection node 14 of the first Vierendeel girder 11 connects, stretching end 22 after completing stretch-draw with the connection node 14 of the second Vierendeel girder 12
Connect.The first Vierendeel girder 11 shown in Fig. 2 to Fig. 6 is upper strata beam, then the second Vierendeel girder 12 is lower floor's beam.Or, the
One Vierendeel girder 11 is lower floor's beam, then the second Vierendeel girder 12 is upper strata beam (not shown in the diagram).Stretching end 22 can be with upper strata beam
Connect, it is also possible to is connected with lower floor beam, but for ease of installing regulation, it is proposed that fixing hold 21 to be connected with upper strata beam, stretching end
22 are connected with lower floor beam.
As it is shown in figure 1, the pre-stretch-draw installation method of the buckling restrained brace of present invention offer comprises the following steps:
Step S100: as it is shown on figure 3, the tension produced due to pre-stretch-draw can be with negative function on buckling restrained brace 2
The compressive stress that vertical load causes, in the present invention, after Rotating fields 1 has been built, while subsequent structural construction, will bend
Bent constraint supports the fixing end 21 of 2 and first connects with the connection node 14 on the first Vierendeel girder 11, opening at buckling restrained brace 2
Reserved elastic deformation space 3 between pull end 22 and the connection node 14 of the second Vierendeel girder 12.The size in elastic deformation space 3 by
Needed for the stretch-draw value that reaches be calculated.
Being connected for fixing between the fixing end 21 of buckling restrained brace 2 with the first Vierendeel girder 11, connected mode can use bolt even
Connect and may be used without welding.
Step S101: as shown in Figure 4, the stretching end 22 of buckling restrained brace 2 is provided with stretch-draw otic placode 23, the second Vierendeel girder
It is provided with stretching rack 4 at the connection node 14 of 12, between stretch-draw otic placode 23 with stretching rack 4, is connected stretch-draw jack 5, logical
Cross stretch-draw jack 5 and buckling restrained brace 2 is carried out initial tensioning.
If the Rotating fields 1 of place floor did not formed enough anti-side rigidity and bearing capacity before buckling restrained brace 2 is installed yet,
It is accomplished by carrying out initial tensioning in pairs and simultaneously to buckling restrained brace 2；If this Rotating fields 1 defined enough anti-side rigidity and
Bearing capacity, then carry out single tendon stretch to buckling restrained brace 2.
Stretch-draw otic placode 23 is connected with the central layer of buckling restrained brace 2 by the way of welding, is provided with at stretch-draw otic placode 23
Stretch-draw hole, to facilitate connection stretch-draw jack 5.Stretching rack 4 is arranged on the connection node 14 of the second Vierendeel girder 12 by fixture
On, the position of stretching rack 4 can be adjusted, in stretch-draw according to the relative position of buckling restrained brace 2 with the second Vierendeel girder 12
After end, the most dismountable stretching rack 4 is to reuse.
Step S102: as it is shown in figure 5, after the stretching force being subject at buckling restrained brace 2 reaches predetermined stretch-draw value, to same Stall
The stretch-draw value of the buckling restrained brace 2 of layer carries out two-wheeled correction and adjusts, to ensure the buckling restrained brace 2 of same described floor all
Reach predetermined stretch-draw value.After correction adjustment completes, by stretching end 22 and the connection of the second Vierendeel girder 12 of buckling restrained brace 2
Node 14 is fixing to be connected.
Predetermined stretch-draw value is caused by load action, differential settlement, welding residual stress etc. according to what buckling restrained brace 2 was subject to
Stagnation pressure force value be determined.Owing to may be equiped with multiple buckling restrained brace 2 in the Rotating fields 1 of same floor, each is bent
Bent constraint supports the stretch-draw value of 2 and may be different from, and respective adjustment state is also different from, it is therefore desirable to all of flexing
Constraint supports the stretch-draw value of 2 and carries out two-wheeled correction adjustment, makes the described support of same described floor all reach predetermined stretch-draw value.?
Can be fixed together by welding between pull end 22 and the connection node 14 of the second Vierendeel girder 12.
Step S103: as shown in Figure 6, after completing above-mentioned steps, puts the buckling restrained brace 2 of same floor.Put
Open after terminating, remove the device such as stretching rack 4, stretch-draw otic placode 23.
In sum, the pre-stretch-draw installation method of the buckling restrained brace that the present invention provides is according to basic mechanical principle, at Rotating fields
Before being not fully complete main sedimentation, first the fixing end of buckling restrained brace is connected with Rotating fields, then opening at buckling restrained brace
Pull end carries out initial tensioning by stretch-draw jack, after the stretching force being subject at buckling restrained brace reaches predetermined value, then to same Stall
The stretch-draw value of the buckling restrained brace of layer carries out two-wheeled correction and adjusts, finally at stretching end and the corresponding connecting joint of buckling restrained brace
Means of spot welds carries out after completing putting opens.Produced by pre-stretch-draw, tension can be with negative function erecting on buckling restrained brace
The compressive stress caused to load, thus can effectively reduce or avoid vertical load and pressurized to bias buckling restrained brace performance
Adverse effect, make buckling restrained brace be more easy to reach its ultimate bearing capacity so that it is hysteretic loop is fuller, energy dissipation capacity strengthen,
Guarantee that buckling restrained brace can give full play to its performance, and installation method is simple, make installation period shorten dramatically, subtract
Lack construction cost.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The principle of above-described embodiment only illustrative present invention and effect thereof, not for limiting the present invention.Any it is familiar with this skill
Above-described embodiment all can be modified under the spirit and the scope of the present invention or change by the personage of art.Therefore, such as
All that in art, tool usually intellectual is completed under without departing from disclosed spirit and technological thought etc.
Effect is modified or changes, and must be contained by the claim of the present invention.
Claims (8)
1. the pre-stretch-draw installation method of a buckling restrained brace, the Rotating fields of described buckling restrained brace place floor includes the first Vierendeel girder, the second Vierendeel girder and this layer of post, described first Vierendeel girder and described second Vierendeel girder are arranged horizontally and all parallel to one another, described layer post is fixedly connected between described first Vierendeel girder and the second Vierendeel girder, it is characterized in that, including step:
A, the Rotating fields of described buckling restrained brace place floor include the first Vierendeel girder, the second Vierendeel girder and this layer of post, described first Vierendeel girder and described second Vierendeel girder are arranged horizontally and all parallel to one another, and described layer post is fixedly connected between described first Vierendeel girder and the second Vierendeel girder；After described Rotating fields construction completes, while subsequent structural construction, connect fixing to the fixing end of described buckling restrained brace and the connection node on described first Vierendeel girder, reserved elastic deformation space between the stretching end and the connection node of described second Vierendeel girder of described buckling restrained brace；
B, the stretching end of described buckling restrained brace are provided with stretch-draw otic placode, it is provided with stretching rack at the connection node of described second Vierendeel girder, described stretching rack is fixed at connection node by fixture, it is connected stretch-draw jack at described stretch-draw otic placode between described stretching rack, by described stretch-draw jack, described buckling restrained brace is carried out initial tensioning；
After C, the stretching force being subject at described buckling restrained brace reach predetermined stretch-draw value, the stretch-draw value of the buckling restrained brace of same described floor is carried out two-wheeled correction adjustment, to ensure that the buckling restrained brace of same described floor all reaches predetermined stretch-draw value, then connect fixing with the connection node of described second Vierendeel girder for the stretching end of described buckling restrained brace；
D, described buckling restrained brace is put.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterized in that: if the described Rotating fields of described floor did not formed enough anti-side rigidity and bearing capacity before described buckling restrained brace is installed yet, it is accomplished by carrying out initial tensioning in pairs and simultaneously to described buckling restrained brace, if the described Rotating fields of described floor has formed enough anti-side rigidity and bearing capacity, described buckling restrained brace is carried out single tendon stretch.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterised in that: in described step A, for welding or bolt connection between the fixing end of described buckling restrained brace with the connection node on described first Vierendeel girder.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterised in that: the stretching end of described buckling restrained brace and the size connecting described elastic deformation space reserved between node of described second Vierendeel girder are calculated by stretch-draw value.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterized in that: the described stretch-draw otic placode of described buckling restrained brace is connected with the central layer of described buckling restrained brace by the way of welding, is provided with stretch-draw hole in order to connect described stretch-draw jack at described stretch-draw otic placode.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterised in that: the stagnation pressure force value caused by load action, differential settlement, welding residual stress that described predetermined stretch-draw value is subject to according to described buckling restrained brace is determined.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterized in that: in described step C, after the correction carried out in the stretch-draw value of the described buckling restrained brace to same described floor has adjusted, by the stretching end of described buckling restrained brace together with the connecting joint means of spot welds of described second Vierendeel girder.
The pre-stretch-draw installation method of buckling restrained brace the most according to claim 1, it is characterised in that: in described step D, after completing described buckling restrained brace is put, remove described stretching rack and stretch-draw otic placode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315119.8A CN104100016B (en) | 2014-07-03 | 2014-07-03 | The pre-stretch-draw installation method of buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315119.8A CN104100016B (en) | 2014-07-03 | 2014-07-03 | The pre-stretch-draw installation method of buckling restrained brace |
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| CN104100016A CN104100016A (en) | 2014-10-15 |
| CN104100016B true CN104100016B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2890341B2 (en) * | 1994-04-19 | 1999-05-10 | 五洋建設株式会社 | Method and apparatus for lifting up top-level frame for structure construction |
| JP2990434B1 (en) * | 1998-09-08 | 1999-12-13 | 日崎建設株式会社 | How to assemble the plumbing unit of the building to the frame by the frame wall method |
| CN2419287Y (en) * | 2000-03-30 | 2001-02-14 | 昆明理工大学 | External prestressed sectional beam for unitary assembled beam-column building |
| CN101435234A (en) * | 2008-12-12 | 2009-05-20 | 北京工业大学 | Steel tube concrete - steel support - concrete combined shear wall and manufacturing method thereof |
| CN101597918B (en) * | 2009-06-25 | 2012-01-25 | 江苏科技大学 | Prestressed giant brace-frame structure |
| CN102051927B (en) * | 2010-12-14 | 2012-05-16 | 中北华宇建筑工程公司 | Parallel buckling restrained brace structure and construction method thereof |
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