CN113293872A - Prefabricated concrete beam column node of concrete prefabricated rectangular pipe pile - Google Patents
Prefabricated concrete beam column node of concrete prefabricated rectangular pipe pile Download PDFInfo
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
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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
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
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Abstract
The invention discloses an assembled concrete beam-column node of a concrete prefabricated rectangular tubular pile, which comprises an upper layer concrete prefabricated rectangular tubular pile, a lower layer concrete prefabricated rectangular tubular pile and a structural beam, wherein a beam-column node area is arranged between the upper layer concrete prefabricated rectangular tubular pile and the structural beam, a reinforcing steel bar in a lower layer concrete prefabricated rectangular tubular pile body extends upwards to the beam-column node area for anchoring, a plurality of vertical connecting reinforcing steel bars penetrate through the beam-column node area and respectively extend into pile cores of the upper layer concrete prefabricated rectangular tubular pile and the lower layer concrete prefabricated rectangular tubular pile for anchoring, so that the lower end of the upper layer concrete prefabricated rectangular tubular pile is semi-rigidly connected or hinged with the structural beam, and the upper end of the lower layer concrete prefabricated rectangular tubular pile is connected with the structural rigid beam. The upper end of the concrete prefabricated rectangular pipe pile is rigidly connected with the beam, so that the rigidity is improved, and the lower end of the concrete prefabricated rectangular pipe pile is semi-rigidly connected with the beam, so that the bending moment of the pipe pile is conveniently adjusted; the invention can realize the mass production and has low cost; the node connection is simple in operation, convenient to construct, safe and reliable, low in construction and installation fault tolerance rate, and capable of accelerating construction progress and reducing cost.
Description
Technical Field
The invention belongs to the technology of an assembled concrete building structure, and particularly relates to an assembled concrete beam-column joint of a concrete prefabricated rectangular tubular pile.
Background
The assembly evaluation standard (GB/T51129-2017) item 3.0.3 stipulates that an assembly building should meet the evaluation score of a main structure part of not less than 20 points, and the main structure of the assembly building is fully divided into 50 points in an assembly building score table, wherein the proportion of vertical members such as columns, supports, bearing walls, ductile wallboards and the like reaches 35-80%, the obtainable score is 20-30 points, the proportion of members such as beams, plates, stairs, balconies, air-conditioning boards and the like reaches 70-80%, and the obtainable score is 10-20 points. If the vertical member is not prefabricated, the proportion of the members such as beams, plates, stairs, balconies, air-conditioning plates and the like is required to reach 80%, which brings great difficulty to the disassembly of the members, and therefore, the vertical member is also often prefabricated.
At present, in the prefabricated vertical component, the common reinforced concrete prefabricated column adopting the sleeve grouting connection method is widely applied. However, the common reinforced concrete prefabricated column has the following disadvantages:
(1) the cost is very high, one cubic meter usually needs to pay cost of three thousand to four thousand, and the requirement on the performance of the crane is high due to the large volume.
(2) The common reinforced concrete prefabricated column adopts a sleeve grouting connection method, which puts forward higher requirements on the manufacturing and mounting precision of the prefabricated column, has low fault tolerance rate, and if a certain link goes wrong, the prefabricated column can not be used possibly, and needs to be manufactured again by a prefabricated component factory, which undoubtedly influences the construction progress and also increases the construction cost.
Disclosure of Invention
The invention aims to provide the fabricated concrete beam-column joint of the concrete prefabricated rectangular tubular pile, which has the advantages of convenient construction, safety, reliability, low construction and installation fault tolerance rate, construction progress acceleration and construction cost reduction.
The purpose of the invention is realized by the following technical scheme: the utility model provides an assembled concrete beam column node of precast concrete rectangle tubular pile, its characterized in that, includes prefabricated rectangle tubular pile of upper concrete, lower floor's prefabricated rectangle tubular pile of concrete and structural beam, be beam column node district between prefabricated rectangle tubular pile of upper concrete, the prefabricated rectangle tubular pile of lower floor's concrete and the structural beam, reinforcing bar in the prefabricated rectangle tubular pile body of lower floor's concrete upwards extends anchor in the beam column node district, and a plurality of vertical connecting reinforcement pass beam column node district and stretch into respectively anchor in the pile core of prefabricated rectangle tubular pile of upper strata and the prefabricated rectangle tubular pile of lower floor's concrete for prefabricated rectangle tubular pile lower extreme of upper strata concrete and structural beam semi-rigid connection or articulated, and the prefabricated rectangle tubular pile upper end of lower floor's concrete connects with structural beam rigid.
The invention uses the concrete prefabricated rectangular pipe pile (the cross section of the pipe pile is square or rectangular) to be assembled and connected with the structural beam to form a beam-column node, the upper end of the concrete prefabricated rectangular pipe pile is rigidly connected with the beam, the rigidity can be improved, the lower end of the concrete prefabricated rectangular pipe pile is semi-rigidly connected with the beam, the existing standard pipe pile has fixed axial force and bending moment bearing capacity, the bending moment of the pipe pile can be adjusted through the semi-rigid connection, and the bending moment can be conveniently adjusted within the bearable range of the pipe pile; at the moment, the axial force is the only variable, the standard tubular pile can be selected according to different axial forces required in different actual projects, and a section of tubular pile meeting the requirements can be cut from the produced standard tubular pile according to different lengths required in different actual projects and used for the actual projects, and a prefabricated column does not need to be produced according to different axial forces, bending moments and lengths required in different actual projects, so that the invention can realize mass production and has low manufacturing cost; the beam column joint connection mode has the advantages of simple operation, convenient construction, safety, reliability and low fault tolerance rate of construction and installation, and can accelerate the construction progress and reduce the construction cost. In addition, the invention uses the concrete prefabricated rectangular pipe pile as the prefabricated column of the fabricated concrete building structure, the concrete prefabricated rectangular pipe pile has mature production technology, low manufacturing cost and easy installation, is beneficial to the development of fabricated type, can adopt proper pipe piles according to actual requirements, can select grouting material or concrete with any strength according to the requirements for grouting, and can also use prestressed or non-prestressed reinforcement of any kind, therefore, the invention has wide application range and is suitable for wide popularization and use.
As an improvement of the invention, the concrete grade of the beam-column joint area is the same as that of the structural beam, and the cross section of the beam-column joint area is larger than that of the concrete prefabricated rectangular tubular pile.
Under the condition that the strength difference of beam-column concrete is large, if the concrete grade of a beam-column joint area is the same as that of a structural beam, when the strength of a column is large, the joint is easy to damage, in order to solve the problem, the conventional method is to separately pour the joint and the beam by adopting concrete with different grades, but the method has the defects of inconvenient construction and low construction efficiency.
The difference between the concrete grade of the beam column joint area and the concrete grade of the concrete prefabricated rectangular tubular pile is more than 5 MPa.
When the beam-column node area is small, the reinforcing steel bars in the lower layer concrete prefabricated rectangular pipe pile body cannot extend into the node area to a sufficient depth, and in order to anchor stably, the part of the reinforcing steel bars in the lower layer concrete prefabricated rectangular pipe pile body, which extends into the beam-column node area, is bent. And when the sufficient degree of depth in the node district is inserted to the reinforcing bar, can not crooked, promptly the reinforcing bar in the prefabricated rectangular pipe pile body of lower floor concrete stretches into the part in beam column node district and is vertical.
The cross section of the beam column joint area is rectangular, rhombic or circular, and other shapes can be adopted according to actual engineering requirements, so that the beam column joint area is flexible to use and convenient to actually install and operate.
The structural beam is a precast beam, a cast-in-place beam or a superposed beam.
A grout blanket is arranged between the upper end of the lower layer concrete prefabricated rectangular pipe pile and the beam column node area and between the lower end of the upper layer concrete prefabricated rectangular pipe pile and the beam column node area.
Preferably, the concrete prefabricated rectangular tubular pile is a prestressed or non-prestressed reinforcement PHC/PC/PRCI/PRCII hollow tubular pile, and tubular piles with any other strength and type can also be used.
The invention is provided with a plurality of horizontal steel bars in the beam column joint area. The horizontal steel bars are equivalent to stirrups, can restrain concrete, improve the concrete strength, can reduce cracks, especially can reduce perps, and the horizontal steel bars can improve the anti-seismic performance of nodes.
The horizontal steel bars comprise transverse steel bars arranged along the transverse direction and longitudinal steel bars arranged along the longitudinal direction, the transverse steel bars and the longitudinal steel bars respectively penetrate through the beam column joint area, two ends of each transverse steel bar extend into the corresponding structural beam, the transverse steel bars are respectively arranged in parallel in the vertical direction and the longitudinal direction, and the longitudinal steel bars are respectively arranged in parallel in the vertical direction and the transverse direction.
Compared with the prior art, the invention has the following remarkable effects:
(1) the invention uses the concrete prefabricated rectangular pipe pile and the structural beam to form the beam-column node, the upper end of the concrete prefabricated rectangular pipe pile is rigidly connected with the beam, the rigidity can be improved, the lower end of the concrete prefabricated rectangular pipe pile is semi-rigidly connected with the beam, the existing standard pipe pile has fixed axial force and bending moment bearing capacity, the bending moment of the pipe pile can be adjusted through the semi-rigid connection, and the bending moment can be conveniently adjusted within the bearing range of the pipe pile.
(2) The standard tubular pile can be selected according to different axial forces required in different practical projects, and a section of tubular pile meeting the requirement can be cut from the produced standard tubular pile according to different lengths required in different practical projects and used for the practical projects, and a prefabricated column does not need to be produced according to different axial forces, bending moments and lengths required in different practical projects, so that the invention can realize mass production and has low manufacturing cost.
(3) The beam column joint connection mode has the advantages of simple operation, convenient construction, safety, reliability and low fault tolerance rate of construction and installation, and can accelerate the construction progress and reduce the construction cost.
(4) The invention uses the concrete prefabricated rectangular pipe pile as the prefabricated column of the fabricated concrete building structure, and the concrete prefabricated rectangular pipe pile has mature production technology, low manufacturing cost and easy installation and is beneficial to the development of fabricated type.
(5) According to the beam-column node, the bearing capacity of the node is enhanced by carrying out appropriate area amplification according to different bearing capacities, the possibility of node damage is reduced, and the beam-column node can use concrete with the same strength as a structural beam, so that the beam-column node can be poured at one time, and is convenient to construct and high in efficiency.
(6) The horizontal steel bars arranged in the beam column joint area are equivalent to stirrups, so that concrete can be restrained, the strength of the concrete can be improved, cracks can be reduced, particularly vertical cracks can be reduced, and the seismic performance of the joint can be improved by the horizontal steel bars.
(7) The invention can use PHC/PC with or without prestressed reinforcement and other strength pipe piles according to the actual engineering requirements, and can select grouting material or concrete with any strength to perform grouting according to the requirements, and can also use prestressed or non-prestressed reinforcement of any kind, therefore, the invention has wide application range and is suitable for wide popularization and use.
Drawings
The invention is described in further detail below with reference to the figures and the specific embodiments.
FIG. 1 is a plan view of example 1 of the present invention (connecting reinforcing bars and cast concrete are not shown);
FIG. 2 is a sectional view of example 1 of the present invention;
FIG. 3 is a sectional view of embodiment 2 of the present invention;
fig. 4 is a plan view of example 3 of the present invention (connecting reinforcing bars and cast concrete are not shown).
Detailed Description
Example 1
As shown in fig. 1 and 2, the assembled concrete beam-column node of a concrete prefabricated rectangular tubular pile according to the invention comprises an upper layer concrete prefabricated rectangular tubular pile 1, a lower layer concrete prefabricated rectangular tubular pile 2 and a structural beam 3, wherein a beam-column node area 4 is arranged between the upper layer concrete prefabricated rectangular tubular pile 1, the lower layer concrete prefabricated rectangular tubular pile 2 and the structural beam 3, in the embodiment, the upper layer concrete prefabricated rectangular tubular pile 1 and the lower layer concrete prefabricated rectangular tubular pile 2 are both square tubular piles with square cross sections, and in other embodiments, the concrete prefabricated rectangular tubular pile may be a rectangular tubular pile with a rectangular cross section. The structural beam 3 is a precast beam, a cast-in-place beam or a superposed beam. Be equipped with gluten 10 and end muscle 11 in the structure roof beam 3, beam column node district 4 is equipped with stirrup 12. The upper layer concrete prefabricated rectangular tubular pile 1 and the lower layer concrete prefabricated rectangular tubular pile 2 can be PHC/PC/PRCI/PRCII hollow tubular piles using prestressed or non-prestressed reinforcement. Reinforcing bar 5 in 2 pile shafts of lower floor concrete prefabricated rectangular pipe pile upwards extends to anchor in beam column node district 4, and in this embodiment, this reinforcing bar 5 stretches into beam column node district 4's part is curved form to under the reinforcing bar can not stretch into the sufficient degree of depth in node district, the realization anchor is firm. In other embodiments, when the reinforcing steel bars are inserted into the node area to a sufficient depth, the reinforcing steel bars are not bent, that is, the part of the reinforcing steel bars in the lower layer concrete prefabricated rectangular pipe pile body extending into the beam-column node area is vertical. A plurality of vertical connecting steel bars 6 penetrate through the beam column node area 4 and respectively extend into the pile cores of the upper layer concrete prefabricated rectangular pipe pile 1 and the lower layer concrete prefabricated rectangular pipe pile 2 for anchoring, so that the lower end of the upper layer concrete prefabricated rectangular pipe pile 1 is semi-rigidly connected or hinged with the structural beam 3, namely the lower end of the upper layer concrete prefabricated rectangular pipe pile 1 is connected with the structural beam 3 through the connecting steel bars 6 and grouting materials (or concrete) and is semi-rigidly connected or hinged; the upper end of the lower layer concrete prefabricated rectangular pipe pile 2 is rigidly connected with the structural beam 3. Namely, the upper end of the lower layer concrete prefabricated rectangular tubular pile 2 is connected with the structural beam 3 through the reinforcing steel bars 5, the connecting reinforcing steel bars 6 and the grouting material (or concrete) and is in rigid connection. And a grout-setting layer 7 is arranged between the upper end of the lower-layer concrete prefabricated rectangular tubular pile 2 and the beam-column node area 4 and between the lower end of the upper-layer concrete prefabricated rectangular tubular pile 1 and the beam-column node area 4.
The beam column node can form a structural system with other common frames, inclined struts and shear walls.
The existing cast-in-place column and the existing prefabricated column are all in rigid connection, the connection difficulty of the lower end of the prefabricated column is high during beam column joint construction, the connection is performed in a mode of connecting through sleeve grouting or inserting steel bars through reserved holes in the prior art, however, the two connection modes belong to rigid connection, the connection procedure is very complicated, the construction is complex, the difficulty is high, the manufacturing cost is high, and in addition, the safety of the connection method cannot be guaranteed due to the fact that the detection method of the sleeve grouting connection method is incomplete.
The upper end of the concrete prefabricated rectangular pipe pile adopts rigid connection which is the same as a cast-in-place structure, although the upper end of the prefabricated column in an assembly type is in rigid connection, the construction is convenient as that of a common cast-in-place structure, in addition, the rigidity can be improved by using rigid connection at one end of the concrete prefabricated rectangular pipe pile (if the two ends are semi-rigid connection, the rigidity can be too low), the lower end of the concrete prefabricated rectangular pipe pile is semi-rigid connection, the connection cost, the connection difficulty and the uncertainty can be reduced, the bending moment of the pipe pile can be properly adjusted, the variable is reduced to only axial force, and the purpose of mass production is achieved.
In general, the beam-column strength is greatly different, and if the node area uses concrete with the same grade as the beam, the node can be damaged when the strength of the column is very high after the verification of the applicant in laboratory tests and site tests. But in actual engineering, the nodes should not be destroyed. If the node uses the concrete with the same grade as the column, the concrete strength of the node and the beam is different, and the node and the beam are required to be separately poured, so that the node is very inconvenient.
In order to solve the problems, under the condition that the difference between the concrete grade of the beam-column node area and the concrete grade of the precast concrete tubular pile is more than 5MPa, the concrete grade of the beam-column node area 4 is the same as that of the structural beam 3, and the cross section of the beam-column node area 4 is larger than that of the precast concrete rectangular tubular pile. In this embodiment, the cross section of the beam-column node area 4 is square, and the area of the cross section is larger than that of the cross section of the concrete prefabricated rectangular pipe pile, that is, compared with the existing beam-column node, the applicant obtains through theoretical analysis and calculation that the beam-column node can be subjected to appropriate area amplification according to different bearing capacities of the beam-column node, so that the bearing capacity of the node is enhanced, and the possibility of node damage is reduced.
The invention relates to a construction method of an assembly type concrete beam column joint of a concrete prefabricated rectangular tubular pile, in the embodiment, a structural beam 3 is a cast-in-place beam, and the construction method specifically comprises the following steps:
s1, mounting beam column node areas and pouring templates of the structural beams;
s2, chiseling out the steel bars 5 in the pile body of the lower layer concrete prefabricated rectangular pipe pile 2, exposing a section of the steel bars on the upper end face of the pile body, and reserving a 2cm mortar bed 7 between the pipe pile and the bottom face of the node. Cleaning the joint surface of the tubular pile, placing three gaskets above the tubular pile and below the node, rechecking whether the thickness and the position of the gasket shown on the floor are correct, and arranging a square box at the periphery of the tubular pile by using a template, wherein the height is 5cm below the structural plane. The bedding course is grouted using a suitable grouting or bedding slurry. Hoisting the lower-layer concrete prefabricated rectangular tubular pile 2 to a mounting position, and extending the upper end of the reinforcing steel bar 5 into the beam column joint area.
S3, cleaning the joint surface of the tubular pile, placing three gaskets below the tubular pile and above the node, rechecking whether the thickness and the position of the gasket on the floor are correct, and arranging a square box at the periphery of the tubular pile by using a template, wherein the height of the square box is 5cm above the structural plane. The bedding course is grouted using a suitable grouting or bedding slurry. And hoisting the upper layer concrete prefabricated rectangular pipe pile 1 to a mounting position.
This embodiment adopts and sits thick liquid earlier, and the construction order of hoist and mount again is more convenient, and the gasket can keep sitting thick liquid layer thickness, flattens thick liquids when avoiding the component installation, and the square box can surround sitting thick liquid region for it can not flow everywhere to sit the thick liquids. Generally, the sitting slurry is the sitting slurry or grouting material which has stronger strength than that of the grouting material of the grouting core.
In other embodiments, a process of placing the components first and then setting the slurry can also be adopted, and the process can be determined according to specific construction conditions.
S4, inserting the connecting steel bars 6 into the upper-layer concrete prefabricated rectangular tubular pile 1, enabling the connecting steel bars to penetrate through the beam column node area 4 and extend into the lower-layer concrete prefabricated rectangular tubular pile 2 to the designed length, and fixing the connecting steel bars 6;
s5, pouring appropriate grouting materials or concrete with the same strength into the pile core and the bedding layer of the upper-layer concrete prefabricated rectangular tubular pile 1, the beam column node area, the structural beam, the bedding layer and the pile core of the lower-layer concrete prefabricated rectangular tubular pile 2 from the upper end of the upper-layer concrete prefabricated rectangular tubular pile 1 until the pile core, the bedding layer, the beam column node area 4, the cast-in-place beam 3 and the bedding layer and the pile core of the lower-layer concrete prefabricated rectangular tubular pile 2 are fully poured, namely the pile core, the bedding layer, the beam column node area 4, the cast-in-place beam 3 and the pile core of the upper-layer concrete prefabricated rectangular tubular pile 1 are poured at one time.
Example 2
As shown in fig. 3, the present embodiment is different from embodiment 1 in that: a plurality of horizontal steel bars are arranged in the beam column joint area 4, and the horizontal steel bars can improve the anti-seismic performance of the beam column joint. Horizontal reinforcing bar includes along the horizontal reinforcing bar 8 of horizontal setting and along the vertical reinforcing bar 9 of vertical setting, and horizontal reinforcing bar 8 and vertical reinforcing bar 9 pass beam column node district 4 respectively and during its both ends stretched into corresponding structure roof beam 3, and horizontal reinforcing bar 8 is vertical and vertically arranged side by side respectively for a plurality of, and vertical reinforcing bar 9 is vertical and horizontal arranged side by side respectively for a plurality of, and horizontal reinforcing bar 8, vertical reinforcing bar 9 and stirrup 12 alternate each other.
Example 3
As shown in fig. 4, the present embodiment is different from embodiment 1 in that: according to the actual bearing capacity condition of the beam-column node, the beam-column node is enlarged in a proper area, the cross section of the beam-column node area 4 is in a rhombic shape, the bearing capacity of the node can be enhanced, the possibility of node damage is reduced, the beam-column node and the structural beam use concrete with the same strength, and the beam-column node and the structural beam can be poured at one time.
In other embodiments, the beam-column node can also be in the shape of a circle and the like, the beam-column node can be in a proper shape according to actual engineering requirements, the use is flexible, and actual installation and operation are facilitated.
In other embodiments, the PHC/PC pipe piles with prestress or without prestress reinforcement and other strength and type pipe piles can be used according to the actual engineering requirements.
In other embodiments, grouting material or concrete of any strength may be selected for grouting as desired.
In other embodiments, any kind of pre-stressed or non-pre-stressed reinforcement may be used as desired. The reinforcing steel bars can be in any suitable type, number, strength and the like according to actual requirements;
in other embodiments, the structural beam is a precast beam or a superposed beam, the construction method is similar to that of embodiment 1, the beam-column nodes are cast in situ, and the specific steps can be adjusted according to the actual conditions in situ and the type of the structural beam.
The embodiments of the present invention are not limited thereto, and according to the above-mentioned contents of the present invention, the present invention can be modified, substituted or changed in other various forms without departing from the basic technical idea of the present invention.
Claims (10)
1. The utility model provides an assembled concrete beam column node of precast concrete rectangle tubular pile which characterized in that: including prefabricated rectangle tubular pile of upper concrete, the prefabricated rectangle tubular pile of lower floor concrete and structural beam, be beam column node district between prefabricated rectangle tubular pile of upper concrete, the prefabricated rectangle tubular pile of lower floor concrete and the structural beam, reinforcing bar in the prefabricated rectangle tubular pile body of lower floor concrete upwards extends beam column node district and anchors, and a plurality of vertical connecting reinforcement pass beam column node district and stretch into respectively anchor in the stake core of prefabricated rectangle tubular pile of upper concrete and the prefabricated rectangle tubular pile of lower floor concrete for the lower extreme and the semi-rigid connection of structural beam of the prefabricated rectangle tubular pile of upper concrete or articulated, and the upper end and the structural beam rigid connection of the prefabricated rectangle tubular pile of lower floor concrete.
2. The fabricated concrete beam column node of claim 1, wherein: the concrete grade in beam column node district is the same with the concrete grade of structure roof beam, just the cross section in beam column node district is greater than the cross section of precast concrete rectangle tubular pile.
3. The fabricated concrete beam column node of claim 2, wherein: and the difference between the concrete grade of the beam column joint area and the concrete grade of the concrete prefabricated rectangular tubular pile is greater than 5 MPa.
4. A fabricated concrete beam column joint as recited in claim 3, wherein: the part of reinforcing bar in the prefabricated rectangle tubular pile body of lower floor concrete stretches into beam column node district is vertical form or crooked form.
5. The fabricated concrete beam column node of claim 4, wherein: the cross section of the beam column node area is rectangular, rhombic or circular.
6. The fabricated concrete beam column node of claim 5, wherein: the structural beam is a precast beam, a cast-in-place beam or a superposed beam.
7. The fabricated concrete beam column node of claim 6, wherein: all be equipped with between the upper end of lower floor's precast concrete rectangle tubular pile and the beam column node district and between the lower extreme of upper strata precast concrete rectangle tubular pile and the beam column node district and sit the thick liquid layer.
8. The fabricated concrete beam column node of claim 7, wherein: the concrete prefabricated rectangular tubular pile is a PHC/PC/PRCI/PRCII hollow tubular pile with or without prestressed reinforcement.
9. A fabricated concrete beam column joint as claimed in any one of claims 1 to 8, wherein: and a plurality of horizontal steel bars are arranged in the beam column joint area.
10. A fabricated concrete beam column node in accordance with claim 9, wherein: horizontal reinforcing bar includes along the horizontal reinforcing bar of horizontal setting and along the vertical reinforcing bar of vertical setting, horizontal reinforcing bar and vertical reinforcing bar pass respectively during beam column nodal region and its both ends stretch into corresponding structure roof beam, horizontal reinforcing bar is arranged a plurality of roots side by side respectively in vertical and vertical, vertical reinforcing bar is arranged a plurality of roots side by side respectively in vertical and horizontal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114922495A (en) * | 2022-06-02 | 2022-08-19 | 华南理工大学 | Prefabricated post of rapid Assembly formula and connected node thereof |
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| CN114922495A (en) * | 2022-06-02 | 2022-08-19 | 华南理工大学 | Prefabricated post of rapid Assembly formula and connected node thereof |
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