CN107060212A - Prefabricated special-shaped center pillar, assembled beam-column node and its construction method - Google Patents
Prefabricated special-shaped center pillar, assembled beam-column node and its construction method Download PDFInfo
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- CN107060212A CN107060212A CN201710331286.5A CN201710331286A CN107060212A CN 107060212 A CN107060212 A CN 107060212A CN 201710331286 A CN201710331286 A CN 201710331286A CN 107060212 A CN107060212 A CN 107060212A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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Abstract
A kind of special-shaped center pillar of precast concrete of the present invention, its post is shaped as "+" font, and its nucleus and 4 limb portions are respectively provided with rectangular steel pipe, and connecting elements is connected between the rectangular steel pipe of nucleus and the rectangular steel pipe in each limb portion；The connecting elements is along the vertically arranged multiple symmetrical X-type units of rectangular steel pipe.The invention also discloses a kind of prefabricated assembled concrete bean column node of the special-shaped center pillar of application and its construction method.Prefabricated special-shaped center pillar, prefabricated assembled bean column node and its construction method of the present invention can effectively improve the shear-carrying capacity and node bonding strength and its efficiency of construction of special-shaped center pillar.
Description
Technical field
Patent of the present invention belongs to building engineering field, and in particular to a kind of prefabricated special-shaped center pillar, assembled beam-column node and
Its construction method.
Background technology
CN103850350A discloses a kind of fabricated assembly overall special-shaped column structure and its concatenation construction method, the structure
Including prefabricated upper prop, prefabricated lower prop and Prefabricated superposed beam；The prefabricated upper prop, prefabricated lower prop, which are embedded with channel-section steel, channel-section steel, pre-
The bolt hole stayed, adjacent prefabricated upper prop and prefabricated lower prop are bolted together by channel-section steel, and formation one kind leaves cast-in-place
The Special-Shaped Column of the up/down perforation in area, cast-in-place area part is provided with encryption stirrup；The Prefabricated superposed beam is anchored at by the vertical muscle of beam
In Special-Shaped Column；The non-pouring concrete part of the two neighboring prefabricated upper prop, the cast-in-place area of prefabricated lower prop and Prefabricated superposed beam,
Filled with cast-in-place concrete, the entirety that a beam column is combined is formed.However, the method that the document is proposed be only applicable to it is conventional pre-
Special-Shaped Column-girder construction processed, is not applied to then for the prestressed girder rod structure suitable for large span.
CN103669567A is disclosed and steel Special-Shaped Column-prestressing force accentric support frame is repaired after a kind of new shake, its steel abnormity
Post is used cooperatively with steel strand wires, but the document does not have how to apply prestressing force in concrete profiled pile.
In the evolution of assembled architecture, the use of Special-Shaped Column is more and more frequent；But do not have also in the prior art pre-
The correlation technique report of the attachment structure of stress Special-Shaped Column-beam.But the demand of reality is more and more stronger.This technology needs
Solve following technical barrier：1) Special-Shaped Column is different from regular shape post, and the limitation of its axial compression ratio is lower, and the destruction of Special-Shaped Column is main
With point limb portion；2) prestressed anchor of Special-Shaped Column is set wherein；3) Special-Shaped Column-girder connection structure how to realize " strong node,
Weak component "；4) when node using it is cast-in-place when, how upper prop, lower prop, beam three fix.Phase of the application emphasis to different in nature center pillar
Close technical scheme to be illustrated, the content for different in nature side column is separately applied.
The content of the invention
The purpose of the present invention is to overcome the defect of prior art and provide a kind of prefabricated special-shaped center pillar, assembled beam-column node
And its construction method, to solve the deficiencies in the prior art.
The technical scheme is that：A kind of precast concrete special-shaped center pillar, it is characterised in that post (1) is shaped as "+"
Font, its nucleus and 4 limb portions are respectively provided with rectangular steel pipe (1-1), rectangular steel pipe (1-1) and each limb of nucleus
Connecting elements (1-2) is connected between the rectangular steel pipe (1-1) in portion；The connecting elements (1-2) is vertically arranged along rectangular steel pipe
Multiple symmetrical X-type units.
Further, the composition component of the X-type unit is with horizontal plane in 30-45 ° of angle, and the X-type unit place is flat
Face is vertically arranged with perpendicular.
Prestress wire is set inside the special-shaped center pillar；On the inner side and outer side border of the rectangular steel pipe (1-1)
It is provided with along length of steel pipe direction arranged for intervalThe reinforcing bar (1-3) of shape, outsideShape reinforcing bar is used as post
Construction muscle support positioning bar, inner sideShape reinforcing bar is used as rectangular steel pipe and the dowel of post steel bar stress cage；Post
In bury prestress wire (1-4) pipeline be inserted in inner sideSky between shape reinforcing bar and rectangular steel pipe tube wall
Between between.
A kind of prefabricated assembled concrete bean column node, the node is used to connect prefabricated lower prop, prefabricated upper prop, precast beam；
The lower prop, upper prop use foregoing special-shaped center pillar；
Characterized in that, the rectangular steel pipe (1-1) of the upper prop protrudes from the upper end of upper prop, the rectangular steel pipe (1-1) of lower prop is dashed forward
For lower prop lower end；
Bean column node region uses steel structure connection, and the steel construction is each corresponding rectangular steel pipe in upper prop and lower prop
The connector of steel tube (3) that (1-1) is arranged, the connector of steel tube (3) is sheathed on the rectangular steel pipe (1-1) of upper prop lower end protrusion
The rectangular steel pipe (1-1) protruded with lower prop upper end is outside, and upper prop, lower prop and the precast beam (2) three are commonly through steel pipe
Connector (3) is connected；
Described connector of steel tube (3) is cuboid, and upper and lower surface opening, inside sets two-layered steel plates (3-1,3-2), wherein,
Upper strata steel plate (3-1) as upper prop prestress wire (1-4) downside anchored end, lower floor's steel plate (3-2) as lower prop in advance should
The upside anchored end of power steel strand wires (1-4)；
Prestress wire in the precast beam (2) in embedded prestress wire, the beam is passed through to be set in connector of steel tube
The level put wears steel pipe, or is anchored at that side towards nucleus of point connector of steel tube in limb portion.
Further, each corresponding connector of steel tube (3) of described rectangular steel pipe is connected to one by junction steel plate (3-5)
Rise, the junction steel plate (3-5) is arranged on the downside of connector of steel tube and sets bolt hole, corresponding lower prop also pre-buried spiral shell
Bolt, is fixed by bolt assembly with junction steel plate；
Further, special-shaped center pillar has been bi-directionally connected precast beam, and R is designated as respectively to, T to if precast beams of the R to/T to both sides
In prestress wire the length that links together of anchorage length more than 18 meters, the prestress steel by R to/T to precast beam
Twisted wire is separately fixed on connector of steel tube, on the connector of steel tube for the slot being fixed on corresponding to precast beam；If R is to/T to two
The length that the anchorage length of prestress wire in the precast beam of side links together within 18 meters, R to/T to three
Setting level wears steel pipe (3-4) on individual connector of steel tube, so that prestress wire passes through；
Further, steel pipe (3-4) is set in connector of steel tube, and it is as precast beam (2) steel strand wires in node region
The passage worn.
Further, steel plate (1-3) is buried in the upside of the rectangular steel pipe (1-1) of upper prop, the downside of the rectangular steel plates of lower prop,
Pass through bolt assembly (1- between the steel plate (1-4) on rectangular steel pipe (1-1) surface and lower floor's steel plate (3-2) of connector of steel tube (3)
5) connect, wherein, bolt embedment is in lower prop.
Further, one end of connector of steel tube and precast beam sets slot.
Further, special-shaped center pillar-girder connection join domain uses connector of steel tube and concrete, in connector of steel tube
Between upper and lower steel plate, and fill concrete between each connector of steel tube.
A kind of construction method of prefabricated assembled concrete bean column node, it is characterised in that construction procedure is：
First, make the upper prop and lower prop, precast beam (2) of foregoing prefabricated special-shaped center pillar；
Second, lower prop is lifted, after the completion of lower prop positioning construction, connector of steel tube (3) is then installed：In the rectangle of the protrusion of lower prop
Connector of steel tube (3) is arranged on steel pipe (1-1), component (1-5) is then connected by screw bolts by the steel plate (1-4) and steel pipe of lower prop
Lower floor's steel plate (3-2) of connector is connected；
3rd, prestressing force is applied to the prestress wire (1-4) of lower prop, in advance should by the way of unilateral prestretching during construction
The upper end of power steel strand wires applies prestressing force, is anchored at lower floor's steel plate (3-2) upper end；
4th, according to the type of connector of steel tube (3), be also by the way of unilateral prestretching by the prestress wire of precast beam
The side of the prestress wire of beam is anchored at the connector of steel tube (3) corresponding to the rectangular steel pipe in lower prop point limb portion region
Inner side, or steel prestress wire by level is worn into steel pipe (3-4)；
5th, upper prop is installed, the upper strata steel plate (3-1) that the prestress wire of upper prop is fixed on into connector of steel tube is held
Further, also include after the 5th step：6th, it is fixed on steel pipe connecting in one end of the prestress wire of lower prop
On the upper strata steel plate (3-1) of fitting, then in the inside of connector of steel tube and periphery casting concrete.
Using above-mentioned technical proposal, compared with prior art, beneficial effects of the present invention are：
First, point limb in Special-Shaped Column buries steel pipe with core, different to improve by the connection X-type member between steel pipe
The shear-carrying capacity of shape post, suitable deflection angle is given by the mechanical model of Analysis of X-type component；Meanwhile, buried in post
Rectangular steel pipe rather than round steel pipe, one is that round steel pipe is not easy to be connected with X-type member, and two be corresponding steel pipe connecting when using round steel pipe
Fitting is also circular, but circle is not easy to connect with precast beam, and the beam-ends of precast beam sets the mould in the arc-shaped that requires
Precision is higher, and arrangement of reinforcement is more complicated, while corresponding mechanics effect is not improved；
Second, concrete center pillar-girder connection, using steel construction come connecting pole-beam, can greatly improve the node of industrial building
Efficiency of construction；
3rd, upper prop and lower prop are anchored on connector of steel tube by prestress wire, improve the self-resetting capability of cylinder,
, being capable of Self-resetting due to the effect of prestress wire under geological process；
4th, each connector of steel tube of rectangular steel pipe wears steel pipe by level and horizontal steel plate connects and to form a rigidity
Larger entirety；Anchoring distance of the invention according to the end carriage of pillar two, there is provided two ways：One is to set elongated steel pipe, just
In steel strand wires are worn, two be that its reason is the fastener for connection of core by steel strand anchoring on the connector of steel tube in point limb portion
Part vertical force stress is maximum, and anchoring steel strand wires are unfavorable for its stabilization, are arranged on point limb portion comparatively preferable；
5th, node region is additionally provided with concrete, i.e., prefabricated special-shaped center pillar uses cast-in-place node, for civilian worker's building
When can strengthen the Seismic Bearing Capacity of node, equivalent to setting structural steel connecting member in node district；
6th, node structure of the invention is suitable only for the post that height is less than 18m.
Brief description of the drawings：
Fig. 1：The plane design drawing of cross Special-Shaped Column.
Fig. 2：The vertical connection figure of rectangular steel pipe.
Fig. 3：The plane detail view of rectangular steel pipe.
Fig. 4：Connector of steel tube setting level wears steel pipe.
Fig. 5：Steel strand wires fixator is set in connector of steel tube.
Fig. 6：The schematic three dimensional views of connector of steel tube.
Fig. 7：The joint detail figure of connector of steel tube and lower prop.
Fig. 8：The corresponding Integral Steel pipe connections plan of the corresponding T-shaped Special-Shaped Column of embodiment three.
Fig. 9：The corresponding connector of steel tube schematic diagram of example IV.
Figure 10：The mechanical analysis sketch of two comparative examples of embodiment one.
Embodiment
Embodiment 1：As shown in figures 1 to 6, a kind of Special-Shaped Column, it is shaped as "+" font, is set in its nucleus and limb portion
Put and be connected with connecting elements (1-2) between rectangular steel pipe (1-1), adjacent rectangular steel pipe (1-1)；Connecting elements is using symmetrical
X-type unit, component therein is with horizontal plane in 30-45 ° of angle, and connecting elements uses corrugated sheet steel or lacing, the X-type
Plane where unit is vertically arranged with perpendicular；It can improve anti-below for special-shaped center pillar connecting elements 1-2 arrangements
The mechanics principle for cutting bearing capacity is illustrated：
(1) using Figure 10 a as comparative example, plane and rectangular steel pipe institute where connecting elements uses vertical steel plate, i.e. steel plate
Vertical plane it is parallel, now, shear-carrying capacity Fa=t × L × fy, wherein：T represents thickness of slab, and L represents cutting according to hypothesis
The sheared length of shear force direction upper steel plate, the fy of steel plate represents the yield strength of steel plate；Wherein, L=b/cos α；Wherein, b is represented
The inner vertical distance of two adjacent rectangular steel pipes, α represents the shear direction and horizontal plane angle assumed；
By taking Figure 10 b as an example, using the solution of the present invention, the shear-carrying capacity F of one block of steel plate nowb=t1× s × fy, wherein
t1The sheared length in the shear direction along hypothesis is represented, its size is：T1=t/cos (90 °-alpha-beta) its minimum value is t, β
For the steel plate and horizontal plane angle of the present invention；S represents the width of steel plate, for convenience of contrasting, it is believed that its width with rectangular steel pipe
Spend
The solution of the present invention, on shear direction, can run into some pieces, the block number specifically run into, spacing and arrangement with steel plate
Mode has relation；
Contrast is calculated for convenience, the solution of the present invention only has one piece of steel plate shearing resistance, and result of calculation is as follows：
Fa/Fb=bsin (alpha+beta)/(s × cos α)
It follows that the two schemes main distinction is：B, s difference, from formula qualitative analysis, if rectangular steel pipe is in itself
Width is bigger, and rectangular steel pipe distance it is nearer when, it is more favourable using the solution of the present invention.
From FbCalculation formula from the point of view of, when β values are 0 °, its value is maximum；When i.e. steel plate is horizontally disposed, shear-carrying capacity is most
Greatly.
But, on rectangular steel pipe length direction can not possibly elongated setting horizontal steel plate, but use oblique steel plate if, it is necessary to
Consider how the shear-carrying capacity of raising steel plate.
The X-type unit shearing resistance that Fig. 2 is provided in the present invention, X-type unit is made up of two symmetrical components.Shearing resistance carrying corresponding to it
Power formula is as follows：
Fb=[t/ | sin (alpha+beta) |+t/ | sin (alpha-beta) |] × s × fy；
From above-mentioned calculation formula, when β and α angle is closer to shear-carrying capacity is bigger.
In engineering practice, the shearing crack α of Special-Shaped Column is general between 30 ° -45 °；X-type unit member and the angle of horizontal plane are excellent
Choosing is also 30 ° -45 °.
A kind of prefabricated bean column node, the node is applied to the connection of center pillar-beam；Including precast beam (2), prefabricated post (1), beam
Column border node region uses steel structure connection；
Wherein, prefabricated post (1) uses above-mentioned Special-Shaped Column, has the precast beam (2), prefabricated post in 4 limb portions correspondence of Special-Shaped Column
(1) nucleus and limb portion is respectively provided with rectangular steel pipe (1-1)；Concrete has been poured in rectangular steel pipe (1-1)；Described square
Shape steel pipe (1-1) is protruded from the top and bottom of prefabricated post；
As shown in figure 3, being provided with the inner side and outer side border of the rectangular steel pipe along length of steel pipe direction arranged for intervalThe reinforcing bar (1-3) of shape, it act as：During construction as suspention rectangular steel pipe fixing point；Outside
Shape reinforcing bar as post construction muscle support positioning bar, inner sideShape reinforcing bar is used as rectangular steel pipe and post steel bar stress cage
Dowel；The pipeline of embedded prestress wire (1-4) in pillar is inserted in inner sideShape reinforcing bar and rectangle steel
Between space between tube wall；
The prefabricated post (1) of node point connection includes upper prop and lower prop, in upper prop and each corresponding rectangular steel pipe (1-1) of lower prop
Connector of steel tube (3) is arranged with, connector of steel tube (3) is sheathed on the rectangular steel pipe (1-1) and lower prop of upper prop lower end protrusion
The rectangular steel pipe (1-1) that distal process goes out is outside, and upper prop, lower prop and the precast beam (2) three are commonly through connector of steel tube
(3) connect；
As Figure 4-Figure 6, connector of steel tube (3) is cuboid, and upper and lower surface opening, inside sets two-layered steel plates (3-1,3-2),
Wherein, upper strata steel plate (3-1) is as the downside anchored end of upper prop prestress wire (1-4), and lower floor's steel plate (3-2) is used as lower prop
The upside anchored end of prestress wire (1-4)；The prominent part of the rectangular steel pipe (1-1) of the upper prop and the upper strata steel plate
The prominent part of the rectangular steel pipe (1-1) of (3-1), the lower prop just coincide with lower floor's steel plate (3-2)；
Prefabricated post (1) improves the self-resetting capability of cylinder by prestress wire (1-4), under geological process, due in advance should
The effect of power steel strand wires, being capable of Self-resetting；
Embodiment two, is with the difference of embodiment one, as Figure 7-8, in the rectangular steel pipe (1- of prefabricated post (1)
1) steel plate (1-3), the steel plate (1-4) on rectangular steel pipe (1-1) surface and lower floor's steel plate of connector of steel tube (3) are buried in both sides
Connected between (3-2) by bolt assembly (1-5), wherein, bolt embedment is in lower prop.Connector of steel tube (3) is different from implementing
The corresponding connector of steel tube of the rectangular steel pipe of special-shaped center pillar (3) is passed through into junction steel plate in the separate type way of example, the present embodiment
(3-5) wears steel pipe (3-4) with level and linked together；It is preferred that, junction steel plate (3-5) is arranged on the downside of connector of steel tube
And bolt hole is set, corresponding lower prop also pre-embedded bolt is fixed by bolt assembly with junction steel plate；And steel pipe (3-4)
The passage worn as precast beam (2) steel strand wires in node region；Two-way level wears steel pipe (3-4) and is in different height
On degree.
The construction procedure of the node is as follows：
First, make the upper prop and lower prop, precast beam (2) of prefabricated special-shaped center pillar；
Second, lower prop is lifted, after the completion of lower prop positioning construction；Connector of steel tube (3) is installed again, in the rectangle steel of the protrusion of lower prop
Connector of steel tube (3) is arranged on pipe (1-1), component (1-5) is then connected by screw bolts by the steel plate (1-4) and steel pipe connecting of lower prop
Lower floor's steel plate (3-2) of fitting is connected；
3rd, prestressing force is applied to the prestress wire (1-4) of lower prop, in advance should by the way of unilateral prestretching during construction
The upper end of power steel strand wires applies prestressing force, is anchored at lower floor's steel plate (3-2) upper end；
4th, according to the type of connector of steel tube (3), be also by the way of unilateral prestretching by the prestress wire of precast beam
The side of the prestress wire of beam is anchored at the connector of steel tube (3) corresponding to the rectangular steel pipe in lower prop point limb portion region
Inner side；Or steel prestress wire by level is worn into steel pipe (3-4)；
5th, upper prop is installed, the upper strata steel plate (3-1) that the prestress wire of upper prop is fixed on into connector of steel tube is held.
Embodiment three, as shown in figure 9, as embodiment two, connector of steel tube uses monoblock type, difference is steel
Also set up on pipe connections and be arranged on point limb portion rectangular steel pipe pair of lower prop with horizontal steel plate (3-6), the horizontal steel plate (3-6)
The outside for the connector of steel tube answered, and with the upper surface gapless of lower prop；During construction, precast beam (2) is positioned over the level
On steel plate (3-6), the end of precast beam is against on the vertical steel plate of connector of steel tube.
Example IV, such as difference of embodiment three is that the upper/lower terminal in connector of steel tube is respectively provided with level
Steel plate, is formed with the join domain of precast beam (2)Shape, further, one end of connector of steel tube and precast beam are set
The slot of " the vertical steel plate in horizontal steel plate+left and right up and down " formation；Construction procedure is similar with embodiment three, precast beam (2) insertion
In slot into connector of steel tube.
Embodiment five：With reference to Fig. 8, special-shaped center pillar is two-way when being respectively connected with precast beam, and R is designated as respectively to, T to when R is to two
The length that the anchorage length of prestress wire in the precast beam of side links together is more than 18 meters, then by R to precast beam
Prestress wire is separately fixed on connector of steel tube, it is preferred that the fastener for connection for the slot being fixed on corresponding to precast beam
On part；The length linked together when the anchorage length of prestress wires of the R into the precast beam of both sides is within 18 meters, then
R to three connector of steel tube on setting level wear steel pipe (3-4), so that prestress wire passes through；T to steel pipe connecting
The connection means of fitting similarly, with T to design it is identical.
Embodiment one, two, three, four, five is primarily adapted for use in industrial building, requirement of the industrial building for construction efficiency
It is higher, can be full using the theory of prefabricated special-shaped center pillar-connector of steel tube-precast beam of embodiment one, two, three, four, five
In the case of sufficient building aseismicity grade, the raising speed of application of maximal efficiency；Also, special-shaped center pillar and precast beam use prestressing force
Structure, with Self-resetting effect.
Embodiment six, the difference with embodiment one, two, three, four, five, special-shaped center pillar-girder connection join domain is used：Steel
Pipe connections and concrete, the surrounding of connector of steel tube set opening (3-3), in order between levels steel plate filling vibrate it is mixed
Solidifying soil；During construction, it is fixed in one end of the prestress wire of lower prop on the upper strata steel plate (3-1) of connector of steel tube, then
In the inside of connector of steel tube and periphery casting concrete.The node structure of embodiment six can be used for civil buildings, embodiment six
Design equivalent to：Also strengthen node structure by the way of concrete+shaped steel in beam-column connection region.
The preferred embodiment of present aspect is described in detail above, it is understood that being said having read the above-mentioned of the present invention
Award after content, those skilled in the art can make various changes or modifications to the present invention.These equivalent form of values equally fall into this Shen
Please be in the protection domain of appended claims.
Claims (10)
1. a kind of special-shaped center pillar of precast concrete, it is characterised in that post (1) is shaped as "+" font, its nucleus and 4
Individual limb portion is respectively provided with rectangular steel pipe (1-1), the rectangular steel pipe (1-1) of nucleus and the rectangular steel pipe (1-1) in each limb portion it
Between be connected with connecting elements (1-2)；The connecting elements (1-2) is along the vertically arranged multiple symmetrical X-type units of rectangular steel pipe.
2. a kind of special-shaped center pillar of precast concrete as claimed in claim 1, it is characterised in that the composition structure of the X-type unit
Part is with horizontal plane in 30-45 ° of angle, and plane where the X-type unit is vertically arranged with perpendicular.
3. the special-shaped center pillar of a kind of precast concrete as claimed in claim 1, it is characterised in that set inside the special-shaped center pillar
Prestress wire；It is provided with the inner side and outer side border of the rectangular steel pipe (1-1) along length of steel pipe direction arranged for intervalThe reinforcing bar (1-3) of shape, outsideShape reinforcing bar as post construction muscle support positioning bar, inner sideShape reinforcing bar is used as rectangular steel pipe and the dowel of post steel bar stress cage；The prestress wire (1-4) buried in post
Pipeline is inserted in inner sideBetween space between shape reinforcing bar and rectangular steel pipe tube wall.
4. a kind of prefabricated assembled concrete bean column node, the node is used to connect prefabricated lower prop, prefabricated upper prop, precast beam；Institute
Lower prop, upper prop are stated using the special-shaped center pillar as described in claim 1-3.
5. a kind of prefabricated assembled concrete bean column node as claimed in claim 4, it is characterised in that the rectangle of the upper prop
Steel pipe (1-1) protrudes from the upper end of upper prop, and the rectangular steel pipe (1-1) of lower prop protrudes from lower prop lower end；
The connector of steel tube (3) arranged in each corresponding rectangular steel pipe (1-1) of upper prop and lower prop, the connector of steel tube
(3) be sheathed on upper prop lower end protrusion rectangular steel pipe (1-1) and lower prop upper end protrude rectangular steel pipe (1-1) outside, upper prop, under
Post and the precast beam (2) three connect commonly through connector of steel tube (3)；
Described connector of steel tube (3) is cuboid, and upper and lower surface opening, inside sets two-layered steel plates (3-1,3-2), wherein,
Upper strata steel plate (3-1) as upper prop prestress wire (1-4) downside anchored end, lower floor's steel plate (3-2) as lower prop in advance should
The upside anchored end of power steel strand wires (1-4)；
Prestress wire in the precast beam (2) in embedded prestress wire, the beam is passed through to be set in connector of steel tube
The level put wears steel pipe, or is anchored at that side towards nucleus of point connector of steel tube in limb portion.
6. a kind of prefabricated assembled concrete bean column node as claimed in claim 5, it is characterised in that described rectangular steel pipe
Each corresponding connector of steel tube (3) is linked together by junction steel plate (3-5), and the junction steel plate (3-5) is arranged on steel
The downsides of pipe connections and bolt hole is set, corresponding lower prop also pre-embedded bolt is consolidated by bolt assembly and junction steel plate
Fixed, one end of connector of steel tube and precast beam sets slot.
7. a kind of prefabricated assembled concrete bean column node as claimed in claim 5, it is characterised in that the special-shaped two-way company of center pillar
Precast beam is connected to, R is designated as respectively to, T to if R connects to the anchorage length of/prestress wires of the T into the precast beam of both sides
R is separately fixed on connector of steel tube by the length being connected together more than 18 meters to/T to the prestress wire of precast beam, Gu
On the connector of steel tube for the slot being scheduled on corresponding to precast beam；If R is to/prestress wires of the T into the precast beam of both sides
The length that anchorage length links together within 18 meters, R to/T to three connector of steel tube on setting level wear steel
Manage (3-4), so that prestress wire passes through.
8. a kind of prefabricated assembled concrete bean column node as claimed in claim 5, it is characterised in that special-shaped center pillar-beam section
Point join domain uses connector of steel tube and concrete, between the upper and lower steel plate of connector of steel tube, and each fastener for connection
Fill concrete between part.
9. a kind of construction method of prefabricated assembled concrete bean column node as claimed in claim 4, it is characterised in that construction
Step is：
First, make the upper prop and lower prop, precast beam (2) of foregoing prefabricated special-shaped center pillar；
Second, lower prop is lifted, after the completion of lower prop positioning construction, connector of steel tube (3) is then installed：In the rectangle of the protrusion of lower prop
Connector of steel tube (3) is arranged on steel pipe (1-1), component (1-5) is then connected by screw bolts by the steel plate (1-4) and steel pipe of lower prop
Lower floor's steel plate (3-2) of connector is connected；
3rd, prestressing force is applied to the prestress wire (1-4) of lower prop, in advance should by the way of unilateral prestretching during construction
The upper end of power steel strand wires applies prestressing force, is anchored at lower floor's steel plate (3-2) upper end；
4th, according to the type of connector of steel tube (3), be also by the way of unilateral prestretching by the prestress wire of precast beam
The side of the prestress wire of beam is anchored at the connector of steel tube (3) corresponding to the rectangular steel pipe in lower prop point limb portion region
Inner side, or steel prestress wire by level is worn into steel pipe (3-4).
5th, upper prop is installed, the upper strata steel plate (3-1) that the prestress wire of upper prop is fixed on into connector of steel tube is held
10. a kind of construction method of prefabricated assembled concrete bean column node as claimed in claim 9, it is characterised in that
Also include after 5th step：6th, the upper strata steel plate (3- of connector of steel tube is fixed in one end of the prestress wire of lower prop
1) on, then in the inside of connector of steel tube and periphery casting concrete.
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|---|---|---|---|---|
| CN112922234A (en) * | 2021-01-27 | 2021-06-08 | 海南大学 | Equivalent steel reinforced concrete prefabricated column and construction method thereof |
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| CN201411825Y (en) * | 2009-05-27 | 2010-02-24 | 天津大学 | Indirect assembled steel pipe concrete combination special-shaped column |
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