CN104847052B - A kind of damaged replaceable composite column structure - Google Patents
A kind of damaged replaceable composite column structure Download PDFInfo
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- CN104847052B CN104847052B CN201510211595.XA CN201510211595A CN104847052B CN 104847052 B CN104847052 B CN 104847052B CN 201510211595 A CN201510211595 A CN 201510211595A CN 104847052 B CN104847052 B CN 104847052B
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- replaceable
- steel tube
- rod section
- spiro rod
- square steel
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Abstract
The invention discloses a kind of damaged replaceable composite column structure, including：One core square steel tube, one ground beam end plate and four replaceable steel boxes, core square steel tube is on ground beam end plate, its lower end closed, its upper end is by the affixed RC posts of some first built-in structures and opens up the opening of a receiving RC posts lower end, ground beam end plate is fixedly arranged on grade beam by the second built-in structure, four replaceable steel boxes are detachably arranged in four walls of core square steel tube respectively with around the core square steel tube, it is this kind of after shake to be configured to only buckling failure occur at peripheral replaceable steel box position, and slight destruction only occur at core square steel tube position or occur without destruction, the controllability of damage location is realized on the premise of vertical bearing capacity is ensured, excellent earthquake resistance, and pillar is resetted after shaking, replaceable steel box is pulled down, installation replaces with intact steel box quickly to repair after realizing the shake of structure.
Description
Technical field
The invention belongs to construction engineering technical field, and in particular to a kind of damaged replaceable composite column structure.
Background technology
Realize that the quick reparation of structure earthquake and the fast quick-recovery of building function are the important classes in current earthquake engineering research field
Inscribe, and building industrialization is realized that sustainable development is innovated to assembling structure system and proposes new requirement and challenge.But it is so far
Only, the research of restorability energy construction applications, is concentrated mainly on the replaceable energy dissipating coupling beam technology and Self-resetting shearing of shear wall
The aspects such as wall construction.As Chinese invention patent CN201220411822.5 proposes a kind of Novel connected limb shear wall structure, including wall
Limb and its coupling beam；The coupling beam includes the end carriage in two ends and in middle part and the weaker stage casing beam of intensity, the stage casing beam
With the dismantled and assembled connection of end carriage described in two.
In frame structure system, it is damaged replaceable, the general component conduct using steel construction type for realizing structure
Energy dissipating section and replaceable section.Such as in reinforced column-girder steel (abbreviation RCS) structural system, the end of girder steel can be used as disappearing
Can section and replacement section.It is generally believed that replaceable girder steel is used as first anti-vibration defense lines of RCS mixed structures, big shake can be met with
When take the lead in surrender power consumption, and only replaceable section can be replaced after shake can recovery structural behaviour.
Under actual seismic effect, even if replaceable girder steel is provided with RCS structures, bottom layer of the reinforcing steel concrete (abbreviation RC)
Will inevitably there is badly damaged or expendable destruction in suspension column.This mainly appears on following two situations：(1) when
Replaceable girder steel occurs after plastic hinge as first anti-vibration defense lines of RCS structures, and bottom suspension column is it is possible to make in latter earthquake
There is plastic hinge with；(2) as the rigidity of basic grade beam is far longer than the rigidity of first floor girder steel, inflection point is normally on post
End, causes post bottom moment of flexure to be much larger than capital moment of flexure.In this case, RC posts bottom is often difficult to avoid that than replaceable steel girder segment elder generation
There is plastic hinge, so as to realize fast quick-recovery structural behaviour after shake being realized using replaceable girder steel.
Therefore, study the damaged replaceable technology of RC suspension columns and self-reset technique is particularly important.And at present about RC posts
The research of the damaged replaceable technology of pin is still little, there is not yet the research report of the damaged replaceable technology of suspension column.
The content of the invention
It is an object of the invention to overcome prior art defect, there is provided a kind of damaged replaceable composite column structure.
The concrete technical scheme of the present invention is as follows：
A kind of damaged replaceable composite column structure, including：One core square steel tube, a ground beam end plate and four replaceable steel boxes,
On ground beam end plate, its lower end closed, its upper end pass through the affixed RC posts of some first built-in structures and open up core square steel tube
One opening for accommodating RC posts lower end, ground beam end plate are fixedly arranged on grade beam by some second built-in structures, four replaceable steel boxes point
Four walls of core square steel tube are not detachably arranged in so that around the core square steel tube, each replaceable steel box includes that a rectangle is empty
Heart box body, some stringer boards contour with rectangle hollow box body, one be connected the top board of stringer board upper end and rectangle hollow cassette upper end, one
Connection stringer board lower end and the base plate and at least one parallel stiffener between top board and base plate of rectangle hollow box body lower end.
In a preferred embodiment of the invention, first built-in structure includes that one first nut and one first connects
Extension bar, the head rod include first spiro rod section and one first lengths of rebar of first nut of adaptation, the embedment of the first lengths of rebar
In RC posts, the first spiro rod section stretches out the lower end of RC posts, and the core square steel tube upper end is provided with first passed through for the first spiro rod section
Installing hole.
It is further preferred that first spiro rod section is connected by spot welding with first installing hole.
It is further preferred that the top board is provided with the first U-shaped hole for being adapted to first spiro rod section, the first spiro rod section according to
It is secondary to pass through the first installing hole and first the first nuts of U-shaped Kong Houyu adaptation so that RC posts, the upper end of core square steel tube and replaceable
The top board of steel box is mutually fixed.
In a preferred embodiment of the invention, second built-in structure includes that one second nut and one second connects
Extension bar, second connecting rod include second spiro rod section and one second lengths of rebar of second nut of adaptation, the embedment of the second lengths of rebar
In grade beam, the second spiro rod section stretches out the upper surface of grade beam, and described ground beam end plate is provided with to be installed for the second spiro rod section is passed through second
Hole.
It is further preferred that second spiro rod section is connected by spot welding with second installing hole.
It is further preferred that the base plate is provided with the second U-shaped hole for being adapted to second spiro rod section, the second spiro rod section according to
It is secondary to pass through the second installing hole and second the second nuts of U-shaped Kong Houyu adaptation so that grade beam, beam end plate and replaceable steel box bottom
Plate is mutually fixed.
In a preferred embodiment of the invention, described ground beam end plate is provided with an adaptation core square steel tube lower end
Standing groove.
In a preferred embodiment of the invention, the thickness of the top board and base plate of the replaceable steel box is more than stringer board
With the wall thickness of the thickness and rectangle hollow box body of stiffener.
The invention has the beneficial effects as follows：
A kind of damaged replaceable composite column structure of the present invention includes：One core square steel tube, a ground beam end plate and four can be replaced
Steel box is changed, on ground beam end plate, its lower end closed, its upper end pass through the affixed RC posts of some first built-in structures to core square steel tube
And the opening of a receiving RC posts lower end is opened up, ground beam end plate is fixedly arranged on grade beam by the second built-in structure, four replaceable steel boxes
Four walls of core square steel tube are detachably arranged in respectively with around the core square steel tube, it is this kind of after shake to be only configured in periphery
There is buckling failure in replaceable steel box position, and slight destruction only occurs at core square steel tube position or occur without destruction,
The controllability of damage location, excellent earthquake resistance are realized on the premise of ensureing vertical bearing capacity, and pillar are resetted after shaking,
Replaceable steel box is pulled down, installation replaces with intact steel box quickly to repair after realizing the shake of structure.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the damaged replaceable composite column structure of the present invention；
Fig. 2 is another dimensional structure diagram of the damaged replaceable composite column structure of the present invention；
Fig. 3 is the dimensional structure diagram of the replaceable steel box of the present invention；
Fig. 4 is the dimensional structure diagram of the head rod of the present invention；
Fig. 5 is the dimensional structure diagram of second connecting rod of the present invention.
Specific embodiment
Accompanying drawing is combined below by way of specific embodiment to be further detailed technical scheme and describe.
As shown in Figure 1, Figure 2 and Figure 3, a kind of damaged replaceable composite column structure, including：One core square steel tube 1, is square
Ground beam end plate 2 and four replaceable steel boxes 3, core square steel tube 1 located at ground beam end plate 2 on, its lower end closed, if its upper end by
Do 4 affixed RC posts 5 of the first built-in structure and open up the opening 11 of 5 lower end of a receiving RC posts, ground beam end plate 2 is solid by some second
Binding structure 6 is fixedly arranged on grade beam 7, which is provided with the standing groove 21 of 1 lower end of an adaptation core square steel tube, four 3 points of replaceable steel boxes
Four walls of core square steel tube 1 are not detachably arranged in so that around the core square steel tube 1, each replaceable steel box 3 includes a square
The hollow box body 31 of shape, some stringer boards 32, contour with rectangle hollow box body 31 are connected 32 upper end of stringer board and rectangle hollow box body
The connection of top board 33, one 32 lower end of stringer board of 31 upper ends is parallel with least one with the base plate 34 of 31 lower end of rectangle hollow box body located at top
Stiffener 35 between plate 33 and base plate 34 so that replaceable steel box 3 flexing can occur now in a compressed state, top board 33 and bottom
The thickness of plate 34 is more than the wall thickness of the thickness and rectangle hollow box body 31 of stringer board 32 and stiffener 35.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, first built-in structure 4 include one first nut (not shown) and
One head rod 42, the head rod 42 include first spiro rod section 421 and one first lengths of rebar of first nut of adaptation
In 422, the embedment RC of the first lengths of rebar 422 post 5, the first spiro rod section 421 stretches out the lower end of RC posts 5,1 upper end of core square steel tube
It is provided with the first installing hole 12, it is first U-shaped that the top board 33 of the replaceable steel box 3 is provided with adaptation first spiro rod section 421
Hole 36, the first spiro rod section 421 are adapted to the first nut after sequentially passing through the first installing hole 12 and the first U-shaped hole 36, and the first spiral shell
Bar segment 421 is connected by spot welding with first installing hole 12 so that RC posts 5, the upper end of core square steel tube 1 and replaceable steel box
3 top board 33 is mutually fixed, and in the present embodiment, the lower end of the RC posts 5 is provided with a up big and down small hierarchic structure, the core side
The upper end side wall of steel pipe 1 stretches out to form square-shaped flange 13 with the support hierarchic structure, and some first built-in structures 4 are equal
Four drift angles of the even square-shaped flange 13 for being distributed in core square steel tube 1.
As shown in Figure 1, Figure 2, shown in Fig. 3 and Fig. 5, second built-in structure 6 include one second nut (not shown) and
One second connecting rod 62, second connecting rod 62 include second spiro rod section 621 and one second lengths of rebar of second nut of adaptation
622, in the embedment grade beam 7 of the second lengths of rebar 622, the second spiro rod section 621 stretches out the upper surface of grade beam 7, and described ground beam end plate 2 is provided with
Second installing hole 22, the base plate 34 of the replaceable steel box 3 are provided with the second U-shaped hole 37 for being adapted to second spiro rod section 621,
Second spiro rod section 621 is adapted to the second nut after sequentially passing through the second installing hole 22 and the second U-shaped hole 37, and second screw rod
Section 621 is connected by spot welding with second installing hole 22 so that grade beam 7, beam end plate 2 and the replaceable base plate 34 of steel box 3
Mutually fix.In the present embodiment, some second built-in structures 6 are uniformly distributed in four drift angles of square ground beam end plate 2.
Preferably, the material of the first spiro rod section 421 of head rod 42 be high duty metal material (10.9 grades of M20 or
8.8 grades of M20) make, end of first lengths of rebar 422 for regular reinforcement, the tack of the first spiro rod section 421 and the first lengths of rebar 422
Portion is attached by way of wielding neck, likewise, the material of the second spiro rod section 621 of the second connecting rod 62 is high intensity
Metal material (10.9 grades or M20 8.8 grades of M20) is made, and the second lengths of rebar 622 is regular reinforcement, the second spiro rod section 621 it is flat
The end of head and the second lengths of rebar 622 is attached by way of wielding neck.
The concrete installation method and operation principle of the present invention is as follows：
(1) by the second spiro rod section 621 of the ground beam end plate 2 with standing groove 21 and the second connecting rod 62 in ground beam end plate 2
The second tapping linked together by way of spot welding, ensure that the second connecting rod 62 is aligned accurately with ground beam end plate 2.To wear
The ground beam end plate 2 for crossing the second connecting rod 62 is placed in 7 steel reinforcement cage of grade beam, it is ensured that 2 level of ground beam end plate, and casting concrete forms band
There is the grade beam 7 of the ground beam end plate 2 and the second spiro rod section 621 of standing groove 21.
Ground 2 four 621 lower ends of the second spiro rod section of corner point of beam end plate are welded together with steel plate, and rock-bolt length is identical with guarantor
Card end plate level, steel plate bottom surface are concordant with 7 soffit plane of grade beam.
(2) built-in U-shaped joint bar in core square steel tube 1, it is ensured that 1 upper end interface of core square steel tube will not under geological process
There is the disengagement phenomenon of concrete and the square-shaped flange 13 of square steel tube upper end, 1 upper end open 11 and first of core square steel tube is connected
Extension bar 42 is connected in one at the first installing hole 12 by way of spot welding, and colligation upper reinforcement cage pours core square steel tube 1
Internal and upper prop section concrete.
1 section of core square steel tube is less than the section on the hierarchic structure top of RC post 5, the first lengths of rebar 422 and the first screw rod
421 tack wielding necks of section, by the way of surrounding weld all around, it is ensured that the first lengths of rebar 422 is welded as with the first spiro rod section 421
Etc. fierce.
(3) upper shell of column core square steel tube 1 is positioned in the standing groove 21 of ground beam end plate 2 and completes upper shell of column and grade beam 7 pairs
Four replaceable steel boxes 3 are filled in the contraposition assembly that 1 surrounding of core square steel tube completes replaceable steel box 3, twist solid first spiral shell by position splicing
Female and the second nut, completes the splicing of whole assembly post.
Core square steel tube 1 is not provided with any connection in square steel tube and 7 contact site of grade beam after being positioned in standing groove 21 and arranges
Apply, it is ensured that under seismic force effects, core square steel tube 1 can realize the connected mode of " being hinged " with ground beam end plate 2.This kind of company
It is less that the mode of connecing can ensure that under geological process assembled section central core square steel tube 1 undertakes moment of flexure, and most of seismic energy
Undertaken by outside replaceable steel box 3, realize structure at suspension column position under geological process damage -form and position it is controllable.Can replace
The top board 33 and base plate 34 for changing steel box 3 is relatively thick to prevent local buckling
There is flexing and the big portion that dissipates in the thinner thickness of the thickness and stringer board 32 of the wall of rectangle hollow box body 31, pressurized surrender
Divide seismic energy, part pulling force can be resisted when replaceable 3 tension of steel box.Sash plate is set between stringer board 32
35, to increase the pressurized surrender bearing capacity of stringer board 32, prevent stringer board 32 from compressive buckling occurs to early.In order to further improve thin abdomen
The pressurized surrender ability of plate is so that the whole replaceable 3 pressurized surrender ability of steel box of raising, between stringer board 32 can arrange stiffeners more
35 or replaceable 3 side of steel box arrange panel mode realize.Leave between stringer board 32 and twist solid first nut and second
The construction space of nut, facilitates the stubborn solid of replaceable steel box 3 and changes.
(4) there is the form of buckling failure under seismic force effects in replaceable steel box 3, absorbs most of seismic energy, this
When 1 concrete of intercooler core square steel tube slightly buckle still in elastic stage or have, there is not big plastic deformation.In experience
After degree or violent earthquake effect, pillar is resetted, the first nut and the second nut is unclamped, by the periphery damaged replaceable steel box 3
Pull down, installation replaces with intact replaceable steel box 3, re-secures high-strength bolt, it is achieved thereby that quickly repairing after the shake of structure
It is multiple.While in order to ensure that structural capacity is front with shake suitable after replacing, and can replace higher replaceable steel box 3.
During little shake, replaceable 3 collective effect of steel box of core square steel tube 1 and periphery, there is provided structure anti-side rigidity reduces interlayer
Alternatively steel box 3 is in elastic stage for displacement, core square steel tube 1 and periphery, meets the first level of specification " no damage in small earthquake "
Set up defences target；
During middle shake, the replaceable steel box 3 of 1 periphery of core square steel tube produces moderate finite deformation, absorbs most of seismic energy, control
Structure relative storey displacement processed, core square steel tube 1 still in elastic stage, set up defences mesh by the second level for meeting specification " middle shake can be repaiied "
Mark；
Big structure sheaf meta is moved past greatly when shaking, and the replaceable steel box in periphery 3 produces drastic deformation until damaging, deform and
Energy dissipation is concentrated mainly on peripheral replaceable 3 position of steel box so that protected 1 part of core square steel tube, it is ensured that structure is not
Collapse, the 3rd level for meeting specification " no collapsing with strong earthquake " is set up defences target.
The above, only presently preferred embodiments of the present invention, therefore the scope of present invention enforcement can not be limited according to this, i.e.,
The equivalence changes made according to the scope of the claims of the present invention and description and modification, all still should belong in the range of the present invention covers.
Claims (9)
1. a kind of damaged replaceable composite column structure, it is characterised in that：Including：One core square steel tube, a ground beam end plate and four can
Steel box is replaced, on ground beam end plate, its lower end closed, its upper end pass through the affixed RC of some first built-in structures to core square steel tube
Post and the opening of a receiving RC posts lower end is opened up, ground beam end plate is fixedly arranged on grade beam by some second built-in structures, and four can replace
Change steel box four walls of core square steel tube are detachably arranged in respectively so that around the core square steel tube, each replaceable steel box includes
One rectangle hollow box body, some stringer boards contour with rectangle hollow box body, one are connected stringer board upper end and rectangle hollow cassette upper end
Top board, the base plate of a connection stringer board lower end and rectangle hollow box body lower end and at least parallel between top board and base plate
Stiffener.
2. damaged replaceable composite column structure as claimed in claim 1 a kind of, it is characterised in that：The first built-in structure bag
One first nut and a head rod are included, the head rod includes first spiro rod section and one first of first nut of adaptation
Lengths of rebar, in the first lengths of rebar embedment RC posts, the first spiro rod section stretches out the lower end of RC posts, and the core square steel tube upper end is provided with confession
The first installing hole that first spiro rod section is passed through.
3. damaged replaceable composite column structure as claimed in claim 2 a kind of, it is characterised in that：First spiro rod section and institute
State the first installing hole to be connected by spot welding.
4. damaged replaceable composite column structure as claimed in claim 3 a kind of, it is characterised in that：The top board is provided with adaptation
First U-shaped hole of first spiro rod section, the first spiro rod section sequentially pass through the first installing hole and first the first nuts of U-shaped Kong Houyu
Adaptation so that RC posts, the upper end of core square steel tube are mutually fixed with the top board of replaceable steel box.
5. damaged replaceable composite column structure as claimed in claim 1 a kind of, it is characterised in that：The second built-in structure bag
One second nut and one second connecting rod are included, second connecting rod includes second spiro rod section and one second of second nut of adaptation
Lengths of rebar, in the second lengths of rebar embedment grade beam, the second spiro rod section stretches out the upper surface of grade beam, and described ground beam end plate is provided with and supplies second
The second installing hole that spiro rod section is passed through.
6. damaged replaceable composite column structure as claimed in claim 5 a kind of, it is characterised in that：Second spiro rod section and institute
State the second installing hole to be connected by spot welding.
7. damaged replaceable composite column structure as claimed in claim 6 a kind of, it is characterised in that：The base plate is provided with adaptation
Second U-shaped hole of second spiro rod section, the second spiro rod section sequentially pass through the second installing hole and second the second nuts of U-shaped Kong Houyu
Adaptation so that grade beam, beam end plate mutually fix with the base plate of replaceable steel box.
8. damaged replaceable composite column structure as claimed in claim 1 a kind of, it is characterised in that：Described ground beam end plate is provided with
The standing groove of one adaptation core square steel tube lower end.
9. damaged replaceable composite column structure as claimed in claim 1 a kind of, it is characterised in that：The top of the replaceable steel box
The thickness of plate and base plate is more than the wall thickness of the thickness and rectangle hollow box body of stringer board and stiffener.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211595.XA CN104847052B (en) | 2015-04-29 | 2015-04-29 | A kind of damaged replaceable composite column structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510211595.XA CN104847052B (en) | 2015-04-29 | 2015-04-29 | A kind of damaged replaceable composite column structure |
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| CN104847052A CN104847052A (en) | 2015-08-19 |
| CN104847052B true CN104847052B (en) | 2017-04-05 |
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| CN108049501B (en) * | 2018-01-19 | 2024-02-02 | 华侨大学 | Repairable prefabricated square steel pipe concrete column foot node and construction method |
| CN108265828B (en) * | 2018-03-19 | 2023-10-27 | 张延年 | Assembled steel pipe concrete beam column encloses and protects integrated system |
| CN111075113B (en) * | 2019-12-31 | 2021-07-27 | 清华大学 | Replaceable column base for recoverable functional structure |
| CN114000416A (en) * | 2021-11-04 | 2022-02-01 | 福州大学 | Segment-replaceable prefabricated assembled mixed pier and construction method thereof |
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