CN106948495A - The prestressing force integral node and its construction method of steel core concrete column and beams of concrete - Google Patents
The prestressing force integral node and its construction method of steel core concrete column and beams of concrete Download PDFInfo
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- CN106948495A CN106948495A CN201710222626.0A CN201710222626A CN106948495A CN 106948495 A CN106948495 A CN 106948495A CN 201710222626 A CN201710222626 A CN 201710222626A CN 106948495 A CN106948495 A CN 106948495A
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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
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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Abstract
The invention discloses a kind of steel core concrete column and the prestressing force integral node of beams of concrete, including the steel core concrete column and beams of concrete connected into right-angled intersection, the node that section swells is formed with the interconnection of the steel core concrete column and beams of concrete;Interlock at the node and wear several deformed bars for being enclosed with sleeve pipe, the deformed bar passes node, and is anchored on the upper and lower steel pipe of steel core concrete column.Integral node meets the design principle of " strong column and weak beam, node is stronger ", can effectively transmit upper strata axle power, force-mechanism clearly, and larger, the superior node structure of shearing resistance, anti-bending strength that for overall structure provides a rigidity;The finally easy construction of the integral node, make simple, and construction is with low cost, better than existing node connection scheme.
Description
Technical field
The present invention relates to a kind of steel core concrete column and the node connecting structure of beams of concrete, more particularly to a kind of steel pipe are mixed
The prestressing force integral node and its construction method of solidifying earth pillar and beams of concrete.
Background technology
Using the existing history for many years of steel core concrete column in civil construction project, steel core concrete column have high intensity,
The features such as superior performance, easy construction, high-rise, big across in the building of, heavy duty and antidetonation, there is relatively broad utilization.But
Due to the particularity of steel core concrete column structure type, beams of concrete is always with the type of attachment at Frame Joints of Concrete-Filled Steel Tube
Emphasis and Technology Difficulties.
In actually used at present, because beams of concrete can not directly be combined with steel pipe column, many using beam disconnection, post is continuous
Combination of nodes form, this joint form is due to the disconnection of beam, and overall performance is poor, and due to beam-post separation beam column
Shearing and moment of flexure can not be transmitted effectively.
It would therefore be highly desirable to solve the above problems.
The content of the invention
Goal of the invention:The first object of the present invention be to provide one kind can effectively transmit above and below steel pipe axial force, simplify node,
Improve toughness at joints form and raising node, the steel core concrete column of ductility and shear resistance and beams of concrete it is pre-
Stress integral node.
The second object of the present invention is to provide the construction of the prestressing force integral node of the steel core concrete column and beams of concrete
Method.
Technical scheme:To realize object above, the pre- of a kind of steel core concrete column and beams of concrete of the present invention should
Power integral node, including the steel core concrete column and beams of concrete connected into right-angled intersection, the steel core concrete column and concrete
The node that section swells is formed with the interconnection of beam;Interlock at the node and wear several prestress steels for being enclosed with sleeve pipe
Muscle, the deformed bar passes node, and is anchored on the upper and lower steel pipe of steel core concrete column.The integral node is answered using pre-
Power reinforcing bar and the node region of sectional dimension increase form overall structure to strengthen the intensity at node;Deformed bar be for
Shearing and moment of flexure that beam column passes to node are undertaken, the axle power between lower prop, and the deformed bar set up can also be transmitted,
Improve the toughness and ductility of steel concrete so that whole system stress performance is lifted well.
Wherein, the deformed bar positioned at intra-node is parallel with the upper and lower steel pipe of steel core concrete column, and this is pre-
The two ends bending of stress reinforcing bar, which stretches out, to be passed node and anchors.
It is preferred that, perpendicular to steel core concrete column direction, level is set at the crossover node of steel core concrete column and beams of concrete
If there is dried layer reinforced mesh, the reinforced mesh is constituted by several reinforcing bars are crisscross.
Wherein, some stirrups are vertically equipped with the reinforced mesh, the stirrup and reinforced mesh combine to form node steel
Muscles and bones frame.The deformed bar of the present invention, the combining structure of reinforced mesh and stirrup cause discrete steel core concrete column with
Reasonable stress at the node of beams of concrete, enhances the strength and stiffness at node, eliminate because steel pipe disconnect brought it is weak
Change the influence of structural strength.
Further, wherein the stirrup at four angles of reinforced mesh is the column stirrup being made up of reinforcing bar, positioned at steel
Stirrup on four sides of muscle mesh sheet is the block form stirrup being made up of reinforcing bar.The integral node, because node sectional dimension is obtained
Increase, need to set reinforced mesh and stirrup to ensure the stabilization of deformed bar in use in node, thus utilize stirrup with
Restraining force at the joint reinforcing bar skeleton that the combination of reinforced mesh is formed, enhancing node;Stirrup can effectively strengthen node core
The concrete effect of restraint of heart district, and improve the shear resistance of node region concrete;Caused simultaneously using joint reinforcing bar skeleton
Reasonable stress at the node of discrete steel core concrete column and beams of concrete, enhances the strength and stiffness at node, solves
The not enough defect of node concrete cracking resistance, is eliminated because steel pipe disconnects the influence of brought weakening structure intensity.
A kind of construction method of the prestressing force integral node of steel core concrete column and beams of concrete, comprises the following steps:
A, precast reinforced mesh sheet, stirrup and the deformed bar for being enclosed with sleeve pipe;
B, working beam column template is set up after, set up corresponding beam steel, and level is spread between the cage bar of beam
If reinforced mesh, vertical on reinforced mesh to be equipped with stirrup, combination forms joint reinforcing bar skeleton;
C, the deformed bar for being enclosed with sleeve pipe, which interlocks, to be interspersed at node, and be fixed on steel core concrete column it is upper,
On lower steel pipe;
D, the casting concrete formation steel core concrete column in upper and lower steel pipe, then casting concrete formation beams of concrete, with
And the crossover node of the beams of concrete and steel core concrete column;
Conserved, after the same period, curing test block intensity reached the 70% of design strength, opened after the completion of E, concreting
Beginning prestressed reinforcement of tensioning, prestressed tensioning amount is determined by design, after the completion of tensioning, and seal mortar treatent is carried out simultaneously to tensioning position
Deformed bar is anchored.
Beneficial effect:Compared with prior art, the present invention has following remarkable advantage:The integral node is answered using pre- first
Power reinforcing bar and the node region of sectional dimension increase form overall structure to strengthen the intensity at node;Next integral node,
Because node sectional dimension is increased, reinforced mesh and stirrup need to be set to ensure that deformed bar is in use in node
Stabilization, therefore utilize stirrup and reinforced mesh combine the joint reinforcing bar skeleton formed, strengthen the restraining force at node;Stirrup can
Effectively to strengthen the concrete effect of restraint of joint cores, and improve the shear resistance of node region concrete;Adopt simultaneously
Cause reasonable stress at the node of discrete steel core concrete column and beams of concrete with joint reinforcing bar skeleton, enhance at node
Strength and stiffness, solve the not enough defect of node concrete cracking resistance, eliminate because steel pipe disconnects brought reduction
The influence of structural strength;Furthermore the deformed bar is oblique to be staggeredly located in the steel pipe up and down of steel core concrete column, through section
Point framework of steel reinforcement, and be anchored on discrete upper and lower steel pipe;For undertaking the shearing and moment of flexure that beam column passes to node, also
The axle power between lower prop can be transmitted, and the deformed bar set up improves the critical shape of earth pillar steel pipe, improves steel
The toughness and ductility of concrete so that whole system stress performance is lifted well;While the deformed bar, bar-mat reinforcement
The combining structure of piece and stirrup causes reasonable stress at the node of discrete steel core concrete column and beams of concrete, enhances section
Strength and stiffness at point, are eliminated because steel pipe disconnects the influence of brought weakening structure intensity;The further integral node
The design principle of " strong column and weak beam, node is stronger " is met, upper strata axle power can be effectively transmitted, force-mechanism clearly, and is whole
Body structure is larger there is provided a rigidity, the superior node structure of shearing resistance, anti-bending strength;The last construction party of the integral node
Just, make simple, and construction is with low cost, better than existing node connection scheme.
Brief description of the drawings
Fig. 1 is structural representation of the invention;
Fig. 2 is conceals the structural representation of beams of concrete in the present invention;
Fig. 3 is conceals the structural representation of steel core concrete column and beams of concrete in the present invention;
Fig. 4 is the structural representation of reinforced mesh and stirrup in the present invention;
Fig. 5 is the structural representation of reinforced mesh in the present invention;
Fig. 6 is the scheme of installation of single deformed bar in the present invention.
Embodiment
Technical scheme is described further below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, integrally saved the invention discloses the prestressing force of a kind of steel core concrete column and beams of concrete
Point, including the steel core concrete column 1 and beams of concrete 2 connected into right-angled intersection, the steel core concrete column 1 and beams of concrete 2
The node 3 that section swells is formed with interconnection;Sectional dimension at the crossover node 3 is more than steel core concrete column or mixed
Solidifying Tu Liang sectional dimension;Interlock at the node 3 and wear several deformed bars 7 for being enclosed with sleeve pipe 6, the deformed bar
7 pass node, and are anchored on the upper and lower steel pipe of steel core concrete column 1.The wherein described prestress steel inside node 3
Muscle 7 is parallel with the upper and lower steel pipe of steel core concrete column 1, and the two ends bending of the deformed bar 7, which stretches out, passes node,
And be anchored on the upper and lower steel pipe of steel core concrete column 1.
At the crossover node 3 of steel core concrete column 1 and beams of concrete 2, if being provided with perpendicular to the level of steel core concrete column 1
Dried layer reinforced mesh 4, the reinforced mesh 4 is constituted by several reinforcing bars are crisscross.The integral node utilizes multistory reinforced mesh sheet
Form overall structure to strengthen the intensity at node with the node region that sectional dimension increases.
As shown in Figures 4 and 5, the reinforced mesh 4 is constituted by several reinforcing bars are crisscross.It is vertical on above-mentioned reinforced mesh 4
Several stirrups 5 are equipped with, the stirrup 5 and the combination of reinforced mesh 4 form joint reinforcing bar skeleton.Wherein it is located at reinforced mesh 4 four
Stirrup 5 at individual angle is the column stirrup being made up of reinforcing bar, and the stirrup 5 on four sides of reinforced mesh 4 is by reinforcing bar structure
Into block form stirrup.The integral node, because node sectional dimension is increased, need to set in node reinforced mesh and
Stirrup ensures the stabilization of deformed bar in use, therefore utilizes the joint reinforcing bar bone for combining formation of stirrup and reinforced mesh
Restraining force at frame, enhancing node;Stirrup can effectively strengthen the concrete effect of restraint of joint cores, and improve node
The shear resistance of region concrete;Discrete steel core concrete column and beams of concrete are caused using joint reinforcing bar skeleton simultaneously
Reasonable stress at node, enhances the strength and stiffness at node, solves the not enough defect of node concrete cracking resistance, disappears
Influence except disconnecting brought weakening structure intensity because of steel pipe.
As shown in figs. 3 and 6, at the crossover node 3 of steel core concrete column 1 and beams of concrete 2 it is oblique staggeredly be equipped with it is some
The individual deformed bar 7 for being enclosed with sleeve pipe 6, the deformed bar 7 passes joint reinforcing bar skeleton, and is anchored at steel pipe with anchorage 8
On the upper and lower steel pipe of concrete column 1.The deformed bar is oblique to be staggeredly located in the steel pipe up and down of steel core concrete column, is worn
Node framework of steel reinforcement is crossed, and is anchored on discrete upper and lower steel pipe;The shearing of node is passed to for undertaking beam column and curved
Square, can also transmit the axle power between lower prop, and the deformed bar set up improves the critical shape of earth pillar steel pipe, improve
The toughness and ductility of steel concrete so that whole system stress performance is lifted well;While the deformed bar, steel
Muscle mesh sheet and the combining structure of stirrup cause reasonable stress at the node of discrete steel core concrete column and beams of concrete, enhancing
Strength and stiffness at node, are eliminated because steel pipe disconnects the influence of brought weakening structure intensity.
The construction method of the prestressing force integral node of a kind of steel core concrete column of the present invention and beams of concrete, including following step
Suddenly:
A, precast reinforced mesh sheet 4, stirrup 5 and the deformed bar 7 for being enclosed with sleeve pipe 6;
B, working beam column template is set up after, set up corresponding beam steel, and level is spread between the cage bar of beam
If reinforced mesh 4, vertical on reinforced mesh 4 to be equipped with stirrup 5, combination forms joint reinforcing bar skeleton;
C, by be enclosed with sleeve pipe 6 deformed bar 7 it is oblique staggeredly be interspersed at node, pass joint reinforcing bar skeleton, and
It is anchored on the upper and lower steel pipe of steel core concrete column 1;
D, the casting concrete formation steel core concrete column in upper and lower steel pipe, then casting concrete formation beams of concrete, with
And the crossover node of the beams of concrete 2 and steel core concrete column 1;
Conserved, after the same period, curing test block intensity reached the 70% of design strength, opened after the completion of E, concreting
Beginning prestressed reinforcement of tensioning 7, prestressed tensioning amount is determined by design, after the completion of tensioning, and seal mortar treatent is carried out to tensioning position
And deformed bar is anchored.
The integral node meets the design principle of " strong column and weak beam, node is stronger ", can effectively transmit upper strata axle power, by
Power clear mechanism, and larger, the superior node structure of shearing resistance, anti-bending strength that for overall structure provides a rigidity;Finally should
The easy construction of integral node, making are simple, and construction is with low cost, better than existing node connection scheme.
Claims (6)
1. the prestressing force integral node of a kind of steel core concrete column and beams of concrete, it is characterised in that:Including connecting into right-angled intersection
Shape at the steel core concrete column (1) and beams of concrete (2) connect, the interconnection of the steel core concrete column (1) and beams of concrete (2)
Into the node (3) for thering is section to swell;Node (3) place, which interlocks, wears several deformed bars (7) for being enclosed with sleeve pipe (6),
The deformed bar (7) passes node, and is anchored on the upper and lower steel pipe of steel core concrete column (1).
2. the prestressing force integral node of steel core concrete column according to claim 1 and beams of concrete, it is characterised in that:Institute
Rheme is parallel with the upper and lower steel pipe of steel core concrete column (1) in the internal deformed bar (7) of node (3), the prestress steel
The two ends bending of muscle (7), which stretches out, to be passed node and anchors.
3. the prestressing force integral node of steel core concrete column according to claim 1 and beams of concrete, it is characterised in that:Institute
Crossover node (3) place for stating steel core concrete column (1) and beams of concrete (2) is set perpendicular to steel core concrete column (1) direction level
If there is dried layer reinforced mesh (4), the reinforced mesh (4) is constituted by several reinforcing bars are crisscross.
4. the prestressing force integral node of steel core concrete column according to claim 3 and beams of concrete, it is characterised in that:Institute
State and some stirrups (5) are vertically equipped with reinforced mesh (4), the stirrup and reinforced mesh combine to form joint reinforcing bar skeleton.
5. the prestressing force integral node of steel core concrete column according to claim 4 and beams of concrete, it is characterised in that:Institute
Stirrup (5) of the rheme at (4) four angles of reinforced mesh is the column stirrup being made up of reinforcing bar, positioned at reinforced mesh (4)
Stirrup (5) on four sides is the block form stirrup being made up of reinforcing bar.
6. a kind of construction party of the prestressing force integral node of steel core concrete column and beams of concrete according to claim 1-5
Method, it is characterised in that comprise the following steps:
A, precast reinforced mesh sheet (4), stirrup (5) and the deformed bar (7) for being enclosed with sleeve pipe (6);
B, working beam column template is set up after, set up corresponding beam steel, and level lays steel between the cage bar of beam
Muscle mesh sheet (4), vertical on reinforced mesh (4) to be equipped with stirrup (5), combination forms joint reinforcing bar skeleton;
C, by be enclosed with sleeve pipe (6) deformed bar (7) it is oblique staggeredly be interspersed at node, pass joint reinforcing bar skeleton, and
On the upper and lower steel pipe for being anchored at steel core concrete column (1);
D, the casting concrete formation steel core concrete column in upper and lower steel pipe, then casting concrete formation beams of concrete, and should
The crossover node of beams of concrete (2) and steel core concrete column (1);
Conserved after the completion of E, concreting, after the same period, curing test block intensity reached the 70% of design strength, start to open
Deformed bar (7) is drawn, prestressed tensioning amount is determined by design, after the completion of tensioning, seal mortar treatent is carried out simultaneously to tensioning position
Deformed bar is anchored.
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Cited By (3)
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CN109914588A (en) * | 2019-03-29 | 2019-06-21 | 重庆大学 | Concrete frame linked system containing steel plate anchor connection node and its buckling restrained brace |
CN111677326A (en) * | 2020-06-19 | 2020-09-18 | 上海建工四建集团有限公司 | Temporary underpinning device for concrete column and using method thereof |
CN112045845A (en) * | 2020-09-08 | 2020-12-08 | 射阳成盛新型建材有限公司 | Production method of concrete prefabricated part |
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