CN112376705B - Beam column joint with precast concrete pipe pile as upper column and construction method of beam column joint - Google Patents
Beam column joint with precast concrete pipe pile as upper column and construction method of beam column joint Download PDFInfo
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- CN112376705B CN112376705B CN202011161796.0A CN202011161796A CN112376705B CN 112376705 B CN112376705 B CN 112376705B CN 202011161796 A CN202011161796 A CN 202011161796A CN 112376705 B CN112376705 B CN 112376705B
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 95
- 238000010276 construction Methods 0.000 title abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 92
- 239000010959 steel Substances 0.000 claims abstract description 92
- 239000004567 concrete Substances 0.000 claims abstract description 66
- 238000004873 anchoring Methods 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 7
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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Abstract
The invention discloses an assembled concrete beam column node taking a precast concrete pipe pile as an upper layer column and a construction method thereof, wherein the upper layer column is an upper layer precast concrete pipe pile, the lower end surface of the upper layer precast concrete pipe pile is provided with a steel ring which is self-contained, the top of a beam of a structural beam which is positioned in a beam column node area is provided with an annular steel plate, the middle openings of the steel ring and the annular steel plate are corresponding to pile core holes of the upper precast concrete pipe piles, the lower surface of the steel ring is connected with the upper surface of the annular steel plate, steel bars are arranged in the beam column joint areas, the upper ends of the steel bars are connected to the annular steel plate, and the lower ends of the steel bars downwards extend into the beam column joint areas for anchoring. Intercepting a section of pipe pile meeting the requirements on a standard pipe pile as the precast concrete pipe pile, wherein the section of pipe pile comprises the bottom of the standard pipe pile, so that the pipe pile with a steel ring at the bottom can be used as a precast column and is suitable for beam column joints; the beam column node connection mode is simple to operate, convenient to construct, safe and reliable, low in construction and installation fault tolerance, capable of accelerating construction progress and reducing construction cost.
Description
Technical Field
The invention belongs to the technology of an assembled concrete building structure, and particularly relates to a beam column node taking a precast concrete pipe pile as an upper column and a construction method thereof.
Background
The assembled building is required to meet the requirement that the evaluation score of a main structure part is not lower than 20 minutes in 3.0.3 of assembled evaluation standards (GB/T51129-2017), and the main structure is fully divided into 50 minutes in an assembled building evaluation list, wherein the proportion of vertical components such as columns, supports, bearing walls, ductile wallboards and the like reaches 35% -80%, the obtainable score is 20-30 minutes, the proportion of components such as beams, boards, stairs, balconies, air conditioning boards and the like reaches 70% -80%, and the obtainable score is 10-20 minutes. If the vertical components are not prefabricated, the proportion of the components such as beams, plates, stairs, balconies, air conditioning boards and the like needs to be 80%, which brings great difficulty to the disassembly of the components, and therefore, the vertical components are also prefabricated frequently.
Currently, in the prefabrication of vertical members, a general reinforced concrete prefabrication column using a sleeve grouting connection method is widely used. However, this conventional reinforced concrete precast column has the following disadvantages:
⑴ The cost is very high, one cubic meter is usually required to pay three to four thousand of fees, and the performance requirement on the crane is high due to the large size.
⑵ The common reinforced concrete precast column adopts a sleeve grouting connection method, so that higher requirements are put forward on the manufacturing and mounting precision of the precast column, the fault tolerance rate of the common reinforced concrete precast column is low, if a certain link goes wrong, the precast column can not be used, and the precast column needs to be manufactured again by a precast member factory, so that the construction progress can be affected undoubtedly, and the construction cost is increased.
Disclosure of Invention
The first aim of the invention is to provide the assembled concrete beam column node which is convenient to construct, safe and reliable, low in construction and installation fault tolerance, capable of accelerating construction progress and reducing construction cost and takes the precast concrete pipe pile as an upper column.
The first object of the present invention is achieved by the following technical scheme: the utility model provides an assembled concrete beam column node of precast concrete tubular pile as upper column, includes upper column, lower floor's concrete member and structure roof beam, be beam column node district between upper column, lower floor's concrete member and the structure roof beam, its characterized in that, the upper column is upper precast concrete tubular pile, the lower terminal surface of upper precast concrete tubular pile has its steel loop of taking, the roof beam top that the structure roof beam is located beam column node district is equipped with annular steel sheet, the middle part trompil of steel loop and annular steel sheet all corresponds with the stake core hole of upper precast concrete tubular pile, the lower surface of steel loop with the upper surface of annular steel sheet links to each other beam column node district is equipped with a plurality of reinforcing bars, the upper end of reinforcing bar is connected on the lower surface of annular steel sheet, and the lower extreme then stretches into beam column node district anchor downwards.
The invention uses the precast concrete pipe pile as the upper layer column to be assembled and connected with the structural beam to form the beam column node, and the precast concrete pipe pile is just connected with the node, so that the rigidity requirement can be met. The invention uses the precast concrete pipe pile as the upper precast column, a section of pipe pile meeting the requirements can be cut out on the produced standard pipe pile, and the section of pipe pile comprises the bottom of the standard pipe pile, so that the section of pipe pile with a steel ring at the bottom can also be used as the precast column to be suitable for beam column joints, and the precast column is not required to be produced according to different axial forces, bending moments and lengths required in different actual projects, thereby realizing mass production and having low manufacturing cost; the beam column node connection mode is simple to operate, convenient to construct, safe and reliable, low in construction and installation fault tolerance, capable of accelerating construction progress and reducing construction cost. In addition, the prefabricated concrete pipe pile is used as the prefabricated column of the assembled concrete building structure, the prefabricated concrete pipe pile has mature production technology, low manufacturing cost and easy installation, is beneficial to the development of assembly, can adopt proper pipe piles according to actual demands, can select grouting materials or concrete with any strength for grouting according to demands, and can also use any kind of prestressed or non-prestressed reinforcing steel bars, so that the invention has wide application range and is suitable for wide popularization and use.
The lower concrete member is a foundation, a lower cast-in-situ column, a lower prefabricated common concrete column or a lower prefabricated concrete pipe pile.
The outer diameter of the annular steel plate is larger than that of the steel ring.
As an improvement of the invention, the fabricated concrete beam-column joint comprises dowel bars which pass through the beam-column joint region and respectively extend into the upper precast concrete pipe pile and the lower precast concrete member for anchoring.
As a preferred embodiment of the invention, the dowel bar is a steel reinforcement cage mainly composed of a plurality of connecting steel bars and stirrups, wherein the connecting steel bars penetrate through a beam column node area and respectively extend into pile cores of the upper-layer precast concrete pipe piles and the lower-layer precast concrete pipe piles to be anchored, the connecting steel bars are distributed along the periphery of the pile cores, and the stirrups hold the connecting steel bars.
As one embodiment of the present invention, the dowel bars are disposed along the pile core of the upper layer precast concrete pipe pile and the lower layer precast concrete pipe pile.
As another embodiment of the present invention, the dowel bars extend into pile cores of the upper layer precast concrete pipe piles and the lower layer precast concrete pipe piles.
As a preferable implementation mode of the invention, the annular steel plate is positioned between the steel plate bar or the beam stirrup of the structural beam and the surface of the beam, and if the distance between the steel plate and the beam is smaller, the annular steel plate can be slightly higher than the surface of the beam, and the annular steel plate can be paved during decoration.
The concrete grade of the beam column node area is the same as that of the structural beam, and the cross section of the beam column node area is larger than or equal to that of the precast concrete pipe pile.
Under the condition that the strength difference of the beam-column concrete is large, if the concrete grade of the beam-column node area is the same as that of the structural beam, when the strength of the column is large, the node is easy to damage, in order to solve the problem, the node and the beam are cast separately by adopting different grades of concrete, but the method has the defects of inconvenient construction and low construction efficiency, and the beam-column node is subjected to appropriate area amplification according to the different bearing capacities to strengthen the bearing capacity of the node, so that the possibility of node damage is reduced, and the beam-column node can use the concrete with the same strength as that of the structural beam, thereby being cast at one time, being convenient to construct and high in efficiency.
When the beam column node area is smaller, the anchoring length of the steel bars arranged in the beam column node area may not be enough, and in order to increase the anchoring length, the lower ends of the steel bars are bent. When the anchoring length of the steel bar is enough, the lower end of the steel bar can not be bent, namely the steel bar is in a vertical straight line shape.
The cross section of the beam column node area is rectangular, diamond or circular, other shapes can be adopted according to actual engineering requirements, the beam column node area is flexible to use, and the beam column node area is convenient to install and operate in practice.
The structural beam is a precast beam, a cast-in-situ beam or a superposed beam.
Preferably, the precast concrete tubular pile is PHC/PC/PRCI/PRCII hollow tubular pile with or without prestressed reinforcement, and any tubular pile with other strength and model can be used.
The second object of the invention is to provide a construction method of the assembled concrete beam column joint with the precast concrete pipe pile as an upper column.
The second object of the invention is achieved by the following technical scheme: the construction method of the assembled concrete beam column node taking the precast concrete pipe pile as the upper column is characterized by comprising the following steps of:
s1, installing a pouring die of a lower concrete member and a beam slab;
S2, installing an annular steel plate on the top of the structural beam in a beam column node area;
S3, welding steel bars on the lower surface of the annular steel plate, and enabling the lower ends of the steel bars to extend into the beam column joint area for anchoring;
S4, installing an upper-layer precast concrete pipe pile, and welding the lower surface of a steel ring of the upper-layer precast concrete pipe pile on the upper surface of the annular steel plate;
S5, grouting from the upper end of the upper precast concrete pipe pile into the pile core hole, namely pouring the pile core, the beam column node area and the lower concrete member of the upper precast concrete pipe pile at one time.
The invention adopts the precast concrete pipe pile as the template for site pouring, and has simple and convenient construction.
Compared with the prior art, the invention has the following remarkable effects:
⑴ The invention uses the precast concrete pipe pile as the upper layer column to be assembled and connected with the structural beam to form the beam column node, and the precast concrete pipe pile is just connected with the node, so that the rigidity requirement can be met.
⑵ The invention uses the precast concrete pipe pile as the precast column, can select the standard pipe pile according to different axial forces required in different practical projects, can intercept a section of pipe pile meeting the requirements on the produced standard pipe pile according to different lengths required in different practical projects, and the section of pipe pile comprises the bottom of the standard pipe pile, thereby the section of pipe pile with a steel ring at the bottom can also be used as the precast column and applied to beam column nodes. The prefabricated column is not required 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.
⑶ The invention adopts the precast concrete pipe pile as the template for site pouring, the beam column node connection mode is simple to operate, the construction is convenient, the safety and the reliability are realized, the construction and installation fault tolerance rate is low, the construction progress can be accelerated, and the construction cost is reduced.
⑷ The prefabricated concrete pipe pile is used as the prefabricated column of the fabricated concrete building structure, the production technology of the prefabricated concrete pipe pile is mature, the manufacturing cost is low, the installation is easy, and the fabricated concrete pipe pile is beneficial to the development of the fabricated concrete building structure.
⑸ According to the invention, the beam column node is subjected to appropriate area amplification according to different bearing capacities to enhance the bearing capacity of the node, reduce the possibility of node damage, and can use concrete with the same strength as that of the structural beam, so that the beam column node can be poured at one time, and is convenient to construct and high in efficiency.
⑹ According to the invention, the PHC/PC pipe piles with other strengths with or without prestress bars can be used according to actual engineering requirements, grouting materials or concrete with any strength can be selected for grouting according to requirements, and any kind of prestress or non-prestress bars can be used, so that the invention has wide application range and is suitable for wide popularization and use.
Drawings
The invention will now be described in further detail with reference to the drawings and to specific examples.
FIG. 1 is a plan view of embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view of embodiment 2 of the present invention;
FIG. 4 is a cross-sectional view of embodiment 3 of the present invention;
FIG. 5 is a plan view of embodiment 4 of the present invention;
FIG. 6 is a section B-B of FIG. 5;
FIG. 7 is a plan view of embodiment 5 of the present invention;
fig. 8 is a plan view of embodiment 6 of the present invention.
Detailed Description
Example 1
As shown in fig. 1 and 2, the assembled concrete beam column node taking the precast concrete pipe pile as an upper column comprises an upper column, a lower concrete member and a structural beam 3, wherein a beam column node area 4 is formed among the upper column, the lower concrete member and the structural beam 3, the upper column is an upper precast concrete pipe pile 1, in the embodiment, the lower concrete member is a lower precast concrete pipe pile 2, and the structural beam 3 can be a precast beam, a cast-in-situ beam or a superposed beam. The upper precast concrete pipe pile 1 and the lower precast concrete pipe pile 2 can be PHC/PC/PRCI/PRCII hollow pipe piles using prestressed or non-prestressed steel bars. The lower terminal surface of upper precast concrete tubular pile 1 has its steel loop 5 from taking, the roof beam top that structural beam 3 is located beam column node district 4 is equipped with annular steel sheet 6, steel loop 5 and annular steel sheet 6's middle part trompil all correspond with the stake core hole of upper and lower precast concrete tubular pile, and annular steel sheet 6's external diameter is greater than steel loop 5's external diameter, steel loop 5's lower surface welding is on annular steel sheet 6's upper surface, be equipped with reinforcing bar 7 at beam column node district 4, reinforcing bar 7's upper end welding is on annular steel sheet 6's lower surface and arrange the distribution along its circumference, the lower extreme then stretches into beam column node district 4 anchor downwards, and in this embodiment, this reinforcing bar 7 is the straight line of vertical setting, its anchor length is enough, can realize the anchor firm. In other embodiments, when the beam-column joint area is small, the lower end of the rebar may be bent in order to increase the anchoring length when the rebar anchoring length is insufficient.
The assembled concrete beam column node of this embodiment still includes the dowel bar, and the dowel bar passes beam column node district and stretches into the anchor in the stake core of upper precast concrete tubular pile 1 and lower floor precast concrete tubular pile 2 respectively, can select suitable dowel bar type according to actual conditions. In this embodiment, the dowel bar is a reinforcement cage mainly composed of a plurality of connecting reinforcements 8 and stirrups 9, and may be other dowel bar types. The connecting steel bars 8 penetrate through the beam column joint area 4 and respectively extend into pile cores of the upper precast concrete pipe pile 1 and the lower precast concrete pipe pile 2 to be anchored, the connecting steel bars 8 are distributed along the periphery of the pile cores, and the hoops 9 hoop the connecting steel bars 8. The reinforcement cage stretches into a section in the pile core of the upper precast concrete pipe pile 1 and the lower precast concrete pipe pile 2.
The lower end of the upper precast concrete pipe pile 1 is just connected with the structural beam 3, namely, the lower end of the upper precast concrete pipe pile 1 is just connected with the structural beam 3 through an annular steel plate 6, a steel bar 7, a steel bar cage and grouting materials (or concrete).
No slurry layer is arranged between the upper end of the lower precast concrete pipe pile 2 and the beam column node area 4 and between the lower end of the upper precast concrete pipe pile 1 and the beam column node area 4.
The assembled concrete beam column node can form a structural system with other common frames, diagonal braces and shear walls.
In general, the beam column strength is greatly different, if the node area uses the concrete with the same grade as the beam, the inventor verifies in laboratory tests and building site tests that when the strength of the column is very high, the node can be damaged. In actual engineering, however, the nodes should not be destroyed. If the node uses the concrete with the same grade as the column, the strength of the concrete of the node and the beam is different, and the node and the beam are required to be poured separately, which is quite inconvenient.
In order to solve the above problems, in the case that the difference between the concrete level of the beam-column joint area and the concrete level of the precast concrete pipe pile is greater than 5MPa, the concrete level of the beam-column joint area 4 and the concrete level of the structural beam 3 are the same, and the cross section of the beam-column joint area 4 is greater than the cross section of the precast concrete pipe pile. In other embodiments, the cross-section of the beam-column junction region may also be equal to the cross-section of the precast concrete pipe pile, depending on the circumstances. In this embodiment, the cross section of the beam-column node area 4 is square, and its area is larger than the area of the cross section of the precast concrete pipe pile, that is, compared with the existing beam-column node, the inventor can perform appropriate area amplification according to the difference of the bearing capacity of the beam-column node through theoretical analysis and calculation, so as to enhance the bearing capacity of the node, reduce the possibility of node damage, and thus, the beam-column node can use concrete with the same strength as the structural beam, so that one-time pouring can be completed, and the construction is convenient and the efficiency is high.
The construction process of this embodiment is:
s1, installing pouring dies of the lower precast concrete pipe piles 2 or the foundations and the beam slabs.
S2, installing an annular steel plate 6 on the top of the structural beam 3 at the beam column node area 4, and particularly between the beam slab ribs or beam stirrups 10 and the beam surface; if the position is too small, the annular steel plate can be slightly higher than the surface of the beam, and the annular steel plate can be paved during decoration.
S3, welding a section of steel bars 7 on the lower surface of the annular steel plate 6, wherein the steel bars 7 extend into the beam column node area 4, and if the anchoring length is enough, bending is not needed; if the anchoring length is insufficient, the steel bar 7 can be bent according to actual requirements, so that the anchoring length is increased.
S4, inserting the reinforcement cage into the pile core hole of the lower-layer precast concrete pipe pile 2, installing the upper-layer precast concrete pipe pile 1, and pouring proper concrete into the pile core hole of the upper-layer precast concrete pipe pile, so that pile cores, nodes and beams of the upper-layer precast concrete pipe pile and the lower-layer precast concrete pipe pile are poured.
And no slurry-setting layer is arranged between the upper precast concrete pipe pile and the node as well as between the lower precast concrete pipe pile and the node.
Example 2
As shown in fig. 3, this embodiment is different from embodiment 1 in that: the dowel bars are arranged along the pile cores of the upper precast concrete pipe pile 1 and the lower precast concrete pipe pile 2.
Example 3
As shown in fig. 4, this embodiment is different from embodiment 1 in that: no dowel bars are arranged in pile cores of the upper precast concrete pipe pile 1 and the lower precast concrete pipe pile 2. Therefore, whether the reinforcing steel bar is inserted into the pile core can be selected according to actual construction conditions.
Example 4
As shown in fig. 5 and 6, this embodiment is different from embodiment 1 in that: the area of the beam-column joint is not amplified.
Example 5
As shown in fig. 7, this embodiment is different from embodiment 1 in that: according to the embodiment, the beam-column node is subjected to appropriate area amplification according to the actual bearing capacity condition of the beam-column node, the cross section shape of the beam-column node area 4 is diamond, 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 one-time pouring can be completed.
Example 6
As shown in fig. 8, this embodiment is different from embodiment 1 in that: according to the embodiment, the beam-column node is subjected to appropriate area amplification according to the actual bearing capacity condition of the beam-column node, the cross section shape of the beam-column node area 4 is circular, 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 one-time pouring can be completed.
In other embodiments, the beam column node can be in a proper shape according to actual engineering requirements, so that the beam column node is flexible to use and convenient to install and operate in practice.
In other embodiments, other strength and type pipe piles such as PHC/PC with or without prestressed reinforcement can be used according to actual engineering requirements.
In other embodiments, grouting materials or concrete of any strength may be selected for grouting as desired.
In other embodiments, any type of pre-stressed or non-pre-stressed rebar may be used as desired. The steel bars can be of any suitable type, number, strength and the like which are actually required;
in other embodiments, the structural beam is a precast beam or a laminated beam, the construction method is similar to that of embodiment 1, the beam-column joints are cast in situ, and the specific steps can be adjusted according to the actual conditions on site and the types of the structural beams.
The embodiments of the present invention are not limited thereto, and according to the above-described aspects of the present invention, the present invention may be modified, replaced or altered in various other ways without departing from the basic technical spirit of the present invention, all of which fall within the scope of the claims of the present invention, according to the general technical knowledge and conventional means of the present art.
Claims (8)
1. The utility model provides a precast concrete tubular pile is assembled concrete beam column node of upper column, includes upper column, lower floor's concrete member and structure roof beam, be beam column node district between upper column, lower floor's concrete member and the structure roof beam, its characterized in that: the upper layer column is an upper layer precast concrete pipe pile, the lower end face of the upper layer precast concrete pipe pile is provided with a steel ring, the top of the structural beam, which is positioned in a beam column node area, is provided with an annular steel plate, holes in the middle of the steel ring and the annular steel plate are corresponding to pile core holes of the upper layer precast concrete pipe pile, the lower surface of the steel ring is welded on the upper surface of the annular steel plate, the beam column node area is provided with a plurality of steel bars, the upper ends of the steel bars are connected to the lower surface of the annular steel plate, and the lower ends of the steel bars downwards extend into the beam column node area to be anchored; the outer diameter of the annular steel plate is larger than that of the steel ring; the annular steel plate is positioned between the plate rib or the beam stirrup of the structural beam and the beam surface, or is positioned above the plate rib or the beam stirrup of the structural beam, and is higher than the beam surface.
2. The fabricated concrete beam-column joint of the precast concrete pipe pile as an upper column according to claim 1, wherein: the lower concrete member is a foundation, a lower cast-in-situ column, a lower precast common concrete column or a lower precast concrete pipe pile.
3. The fabricated concrete beam-column joint of the precast concrete pipe pile as an upper column according to claim 2, wherein: the assembled concrete beam column node comprises a dowel bar, and the dowel bar penetrates through the beam column node area and respectively stretches into the upper-layer precast concrete pipe pile and the lower-layer concrete member to be anchored.
4. A fabricated concrete beam-column joint for a precast concrete pipe pile as an upper column according to claim 3, wherein: the dowel bars are steel reinforcement cages mainly composed of a plurality of connecting steel bars and hoops, wherein the connecting steel bars penetrate through the beam column node areas and respectively extend into pile cores of the upper-layer precast concrete pipe piles and the lower-layer precast concrete pipe piles to be anchored, the connecting steel bars are distributed along the periphery of the pile cores, and the hoops hold the connecting steel bars.
5. The fabricated concrete beam-column joint of the precast concrete pipe pile as an upper column according to claim 4, wherein: the dowel bars are arranged along the pile cores of the upper-layer precast concrete pipe piles and the lower-layer precast concrete pipe piles in a through length mode, or extend into the pile cores of the upper-layer precast concrete pipe piles and the lower-layer precast concrete pipe piles for a section.
6. The fabricated concrete beam-column joint using the precast concrete pipe pile as an upper column according to claim 5, wherein: the concrete grade of the beam column node area is the same as that of the structural beam, and the cross section of the beam column node area is larger than or equal to that of the precast concrete pipe pile.
7. The fabricated concrete beam-column joint of the precast concrete pipe pile as an upper column according to claim 6, wherein: the steel bars arranged in the beam column node areas are in a straight line shape vertically arranged or bent at the lower ends; the cross section of the beam column node area is rectangular, diamond or circular; the structural beam is a precast beam, a cast-in-situ beam or a superposed beam; the precast concrete pipe pile is PHC/PC/PRCI/PRCII hollow pipe pile with or without prestressed reinforcement.
8. A method of constructing an assembled concrete beam-column joint using the precast concrete pipe pile of claim 1 as an upper column, comprising the steps of:
s1, installing a pouring die of a lower concrete member and a beam slab;
S2, installing an annular steel plate on the top of the structural beam in a beam column node area;
S3, welding steel bars on the lower surface of the annular steel plate, and enabling the lower ends of the steel bars to extend into the beam column joint area for anchoring;
S4, installing an upper-layer precast concrete pipe pile, and welding the lower surface of a steel ring of the upper-layer precast concrete pipe pile on the upper surface of the annular steel plate;
S5, grouting from the upper end of the upper precast concrete pipe pile into the pile core hole, namely pouring the pile core, the beam column node area and the lower concrete member of the upper precast concrete pipe pile at one time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011161796.0A CN112376705B (en) | 2020-10-27 | 2020-10-27 | Beam column joint with precast concrete pipe pile as upper column and construction method of beam column joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN113293872A (en) * | 2021-05-14 | 2021-08-24 | 广东省建科建筑设计院有限公司 | Prefabricated concrete beam column node of concrete prefabricated rectangular pipe pile |
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| CN102677784A (en) * | 2012-05-21 | 2012-09-19 | 天津大学 | Prefabricated concrete pipe column and reinforced concrete beam node structure and construction method thereof |
| CN111042439A (en) * | 2019-10-08 | 2020-04-21 | 广东省建筑科学研究院集团股份有限公司 | Prefabricated column of assembled concrete building structure and beam column node thereof |
| CN215290679U (en) * | 2020-10-27 | 2021-12-24 | 广东省建科建筑设计院有限公司 | Beam column node with precast concrete pipe pile as upper column |
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| JP2980793B2 (en) * | 1993-07-06 | 1999-11-22 | 株式会社奥村組 | Column / beam joining method |
| CN105625572B (en) * | 2016-02-29 | 2018-05-15 | 东南大学 | Distinctiveness uses the precast prestressed concrete frame bean column node of high performance material |
| CN107313507B (en) * | 2017-05-22 | 2023-01-17 | 广东省建筑工程集团有限公司 | A construction method of fabricated concrete frame hollow column joint construction |
| CN108005304B (en) * | 2017-10-30 | 2023-08-01 | 中国建筑股份有限公司 | Assembled prestressed concrete frame system and construction method thereof |
| CN108487461A (en) * | 2018-03-20 | 2018-09-04 | 东南大学 | Precast prestressed concrete frame bean column node with additional bar and sleeve |
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| CN102677784A (en) * | 2012-05-21 | 2012-09-19 | 天津大学 | Prefabricated concrete pipe column and reinforced concrete beam node structure and construction method thereof |
| CN111042439A (en) * | 2019-10-08 | 2020-04-21 | 广东省建筑科学研究院集团股份有限公司 | Prefabricated column of assembled concrete building structure and beam column node thereof |
| CN215290679U (en) * | 2020-10-27 | 2021-12-24 | 广东省建科建筑设计院有限公司 | Beam column node with precast concrete pipe pile as upper column |
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