CN216109028U - Profile steel connecting structure of precast concrete tubular pile node - Google Patents
Profile steel connecting structure of precast concrete tubular pile node Download PDFInfo
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- CN216109028U CN216109028U CN202120863568.1U CN202120863568U CN216109028U CN 216109028 U CN216109028 U CN 216109028U CN 202120863568 U CN202120863568 U CN 202120863568U CN 216109028 U CN216109028 U CN 216109028U
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Abstract
The utility model discloses a section steel connecting structure of a precast concrete tubular pile node, which comprises an upper layer precast concrete tubular pile, a lower layer precast concrete tubular pile and a structural beam/hollow floor/flat floor, wherein a node area and an upper layer are arranged between the upper layer precast concrete tubular pile and the lower layer precast concrete tubular pile and between the structural beam/hollow floor/flat floor, the lower layer of precast concrete tubular pile is formed by arranging a section steel connecting component in a pile core hole of the precast concrete tubular pile and pouring concrete, the section steel connecting component penetrates through a node area and respectively extends into the upper layer of precast concrete tubular pile and the lower layer of precast concrete tubular pile to be anchored, so that the lower end of the upper layer of precast concrete tubular pile is semi-rigidly connected or hinged with the structural beam/hollow floor/flat floor, and the upper end of the lower layer of precast concrete tubular pile is rigidly connected with the structural beam/hollow floor/flat floor. The utility model arranges the section steel connecting component in the tubular pile core, which improves the anti-shearing performance, makes the component have enough anti-shearing capability, and improves the anti-seismic performance.
Description
Technical Field
The utility model belongs to the technology of an assembled concrete building structure, and particularly relates to a profile steel connecting structure of a precast concrete tubular pile node.
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 component is not prefabricated, the proportion of the components such as beams, plates, stairs, balconies, air-conditioning plates and the like needs to reach 80 percent, and due to the complexity of engineering, great difficulty is brought to the disassembly of the components, so the prefabrication of the vertical component is an effective method for solving the difficulty in the disassembly of the assembled components.
The key of the assembly type concrete structure technology is the connection among all components, but the types of the prior optional reinforced concrete precast columns are too few, the manufacturing cost is overhigh, and the construction is more complex. In the assembly type concrete frame structure, beam-column joints bear pressure transmitted by an upper column, and bending moment of beam-column ends is transmitted and distributed through the beam-column joints and is a main stress part in the frame, so that the reliability of beam-column connection, particularly the seismic performance of the beam-column joints, is a focus of attention in the industry.
At present, in prefabricated vertical components, common reinforced concrete prefabricated columns connected by sleeve grouting are widely applied, but the common reinforced concrete prefabricated columns have the following defects:
the steel reinforced concrete prefabricated column is single in form, comprehensive cost is high due to the fact that steel templates are adopted in prefabricated component factories, grouting sleeves are used for connection, component transportation cost is low, cost of three thousand to four thousand is required to be paid for one cubic meter, and performance requirements of a crane are high due to the fact that the steel reinforced concrete prefabricated column is large in size.
The ordinary reinforced concrete prefabricated column adopts the sleeve grouting connection method, the high requirements are provided for the manufacturing and installation accuracy of the prefabricated column, the technical requirements of constructors on the connection mode adopting the sleeve grouting are high, the grout blocking, the grouting is not dense, the grouting strength is not enough, and other common quality problems are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide the section steel connecting structure of the precast concrete tubular pile node, which has the advantages of convenience in construction, reliability in stress, low construction and installation fault tolerance rate, capability of accelerating construction progress, reducing construction cost, improving standardization degree, saving energy, protecting environment and improving earthquake resistance.
The purpose of the utility model is realized by the following technical scheme: a section steel connecting structure of a precast concrete tubular pile node comprises an upper layer precast concrete tubular pile column, a lower layer precast concrete tubular pile column and a structural beam/hollow floor/flat floor, wherein a node area is arranged between the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column and between the structural beam/hollow floor/flat floor, and is characterized in that the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile are both formed by arranging a section steel connecting component in a pile core hole of a precast concrete tubular pile and pouring concrete, the section steel connecting component penetrates through the node area and respectively extends into the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile to be anchored, so that the lower end of the upper layer precast concrete tubular pile column is semi-rigidly connected or hinged with the structural beam/hollow floor/flat floor, and the upper end of the lower precast concrete tubular pile column is rigidly connected with a structural beam/hollow floor/flat floor.
The utility model sets the section steel connecting component in the pile core hole of the precast concrete tubular pile and pours concrete to form the precast concrete tubular pile, the precast concrete tubular pile has certain vertical bearing capacity and bending resistance, if the upper end of the precast concrete tubular pile is rigidly connected with the beam, the rigidity can be improved, the lower end of the precast concrete tubular pile is semi-rigidly connected with the beam, the bending moment of the tubular pile can be adjusted through the semi-rigid connection, and the bending moment can be conveniently adjusted in the bearing range of the tubular pile; at the moment, the axial force is the only variable, tubular piles of different models can be selected according to the axial force of the pillars in different actual projects, and a section of tubular pile which meets the length can be intercepted as required and used in the actual projects; the precast concrete tubular pile has mature production technology, energy conservation, environmental protection, low manufacturing cost and easy installation, and is beneficial to the development of an assembly type; the utility model arranges the section steel connecting member in the tubular pile core to improve the anti-shearing performance, overcomes the defect that the anti-seismic performance is reduced due to the poor ductility of the tubular pile caused by the increased brittleness caused by the higher concrete strength grade of the tubular pile, ensures that the member has enough shearing resistance, causes the member to generate bending damage with better ductility, prevents the shearing damage from being prior to the bending damage, and improves the anti-seismic performance. The 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. The utility model can adopt proper tubular piles according to actual requirements, can select grouting materials or concrete with any strength for grouting according to requirements, and can also use prestressed or non-prestressed reinforcements of any types, thereby having wide application range and being suitable for wide popularization and use.
The section steel connecting component extends into the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column core by a section length or a full length.
The profile steel connecting component is a reinforcement cage formed by binding stirrups and longitudinal bars; the profile steel connecting component comprises a reinforcement cage formed by binding stirrups and longitudinal reinforcements and a long steel part vertically inserted into the reinforcement cage; the section steel connecting member is a long steel part which is section steel, a steel pipe or a steel bar and the like.
The concrete strength of the node area, the structural beam/hollow floor/flat slab is the same as that of the upper layer and the lower layer precast concrete tubular pile column cores, and the node area, the structural beam/hollow floor/flat slab and the upper layer and the lower layer precast concrete tubular pile column cores are formed by pouring concrete at one time; and conversely, pouring concrete of the node area, the structural beam/hollow floor/flat floor and the prefabricated concrete pipe pile column cores on the upper layer and the lower layer in batches.
The concrete strength of the node area, the structural beam/hollow floor/flat floor and the upper and lower precast concrete tubular pile column cores is the same, the concrete grade of the precast concrete tubular pile is 5MPa higher than that of the node area, and the cross section of the node area is larger than that of the upper and lower precast concrete tubular pile columns. The bearing capacity of the node is enhanced by carrying out appropriate area amplification according to the difference of the bearing capacity of the node, the possibility of node damage is reduced, and the node can use concrete with the same strength as a structural beam/hollow floor/flat floor, so that the node can be poured at one time, and the utility model has convenient construction and high efficiency.
The top of the lower layer prefabricated pipe pile column can be provided with a column cap or not; the reinforcing bars in the lower-layer precast concrete tubular pile body can be reserved with a certain length and extend upwards to be anchored in the node area, and the reinforcing bars of the pile body can not extend into the node area to be anchored.
The cross section of the node area is rectangular, rhombic or circular, and other shapes can be adopted according to the actual engineering requirements, so that the node 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 precast concrete tubular pile column and a node area; when the structural beam is a precast beam or a superposed beam, a grout layer is arranged between the lower end of the upper precast concrete tubular pile column and the beam column node area.
Preferably, the precast concrete tubular pile is a prestressed or non-prestressed reinforcement PHC/PC/PRCI/PRCII hollow tubular pile, and tubular piles with any other strength and model can also be used; the cross section of the precast concrete tubular pile is circular or rectangular.
Compared with the prior art, the utility model has the following remarkable effects:
the prefabricated concrete pipe pile has the advantages that the upper end of the prefabricated pipe pile is rigidly connected with the beam or the floor, the rigidity can be improved, the lower end of the prefabricated pipe pile is semi-rigidly connected with the beam or the floor, the prefabricated concrete pipe pile has certain vertical bearing capacity and bending resistance, 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.
According to the utility model, tubular piles of different types can be selected according to the axial force of the columns in different practical projects, and one section of tubular pile which meets the length can be cut out as required to be used in the practical projects.
The node connection mode is simple to operate, the connection parts are various in forms, the connection between the upper-layer prefabricated pipe column and the lower-layer prefabricated pipe column and the structural beam/hollow floor/flat floor can be realized by adopting the stirrups, the reinforcing steel bars, the section steel, the steel pipes, the steel bars and other parts, the shearing resistance can be improved, the ductility of the novel prefabricated pipe column can be improved, the construction is convenient, the safety and the reliability are realized, the construction and installation fault-tolerant rate is low, the construction progress can be accelerated, and the construction cost is reduced.
According to the prefabricated concrete building structure, the prefabricated concrete pipe pile is used as a prefabricated column of the prefabricated concrete building structure, the prestressed concrete pipe pile has the advantages of high pile body strength, high construction speed, easiness in quality guarantee, energy conservation, environmental friendliness and the like, the production technology is mature, the manufacturing cost is low, the installation is easy, and the prefabricated concrete building structure is favorable for the development of the prefabricated concrete building structure.
Fifthly, according to the bearing capacity of the node, appropriate area amplification is carried out to enhance the bearing capacity of the node and reduce the possibility of node damage, the node can use concrete with the same strength as that of a structural beam/hollow floor/flat floor, the concrete of the prefabricated pipe column can be the same as that of the node, so that one-time pouring can be completed, the concrete is suitable for batch pouring when the strength is different, the construction is convenient, and the efficiency is high.
Sixthly, tubular piles with prestress or without prestress reinforcements, such as PHC/PC/PRCI/PRCII and other strengths, can be used according to actual engineering requirements, round, square and rectangular tubular piles can be selected, grouting materials or concrete with any strength can be selected according to requirements for grouting, and prestress or non-prestress reinforcements of any type can be used, so that the utility model is wide in application range and suitable for wide popularization and use.
Drawings
The utility model 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;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a plan view of embodiment 2 of the present invention;
FIG. 4 is a plan 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 plan view of embodiment 5 of the present invention;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;
FIG. 8 is a plan view of embodiment 6 of the present invention;
FIG. 9 is a plan view of embodiment 7 of the present invention.
Detailed Description
Example 1
As shown in fig. 1 and 2, the section steel connection structure of a precast concrete tubular pile node according to the present invention includes an upper precast concrete tubular pile 1, a lower precast concrete tubular pile 2, and a structural beam 3, a node area between the upper precast concrete tubular pile 1, the lower precast concrete tubular pile 2, and the structural beam 3 is a beam-column node area 4, and the structural beam 3 may be a precast beam, a cast-in-place beam, or a composite beam. The upper layer precast concrete tubular pile column 1 and the lower layer precast concrete tubular pile column 2 are both formed by arranging a section steel connecting component in a pile core hole of a precast concrete tubular pile 9 and pouring concrete in situ. The precast concrete tubular pile 9 can be a prestressed or non-prestressed reinforcement PHC/PC/PRCI/PRCII hollow tubular pile, in this embodiment, the cross section shape of the precast concrete tubular pile 9 is circular, the section steel connecting member comprises a reinforcement cage formed by binding a stirrup 10 and a longitudinal reinforcement 11 and section steel 12 vertically inserted into the reinforcement cage, the section steel connecting member penetrates through the beam column node area 4 and respectively extends into the upper precast concrete tubular pile 1 and the lower precast concrete tubular pile 2 for anchoring, and the section steel connecting member extends into a section of length or the full length. The steel bars 5 in the pile body of the lower layer precast concrete tubular pile 2 extend upwards to the beam-column node area 4 to be anchored, so that the lower end of the upper layer precast concrete tubular pile 1 is semi-rigidly connected or hinged with the structural beam 3, namely, the lower end of the upper layer precast concrete tubular pile 1 is connected with the structural beam 3 through the profile steel connecting member and the grouting material (or concrete) and is semi-rigidly connected or hinged; the upper end of the lower layer precast concrete tubular pile 2 is rigidly connected with the structural beam 3, namely, the upper end of the lower layer precast concrete tubular pile 2 is connected with the structural beam 3 through the reinforcing steel bars 5, the section steel connecting components and the grouting material (or concrete) and is rigidly connected to form an assembly type structure. And a grout layer 7 is arranged between the upper end of the lower-layer precast concrete tubular pile 2 and the beam column node area 4, and when the structural beam is a precast beam or a superposed beam, the grout layer 7 is arranged between the lower end of the upper-layer precast concrete 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 precast concrete pipe pile adopts rigid connection which is the same as a cast-in-place structure, although the upper end of the precast column in an assembly type is in rigid connection, the precast concrete pipe pile is convenient to construct as a common cast-in-place structure, in addition, the rigidity can be improved (if the two ends are in semi-rigid connection, the rigidity can be too low) by using rigid connection at one end of the precast concrete pipe pile, the lower end of the precast concrete pipe pile is in 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 upper precast concrete tubular pile 1 and the lower precast concrete tubular pile 2. 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 precast concrete tubular 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 construction process of the connecting structure of the precast concrete tubular pile and the structural beam is as follows (the structural beam 3 is a cast-in-place beam):
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 precast concrete pipe pile 2, exposing a section of the steel bars on the upper end face of the pile body, and reserving a 2cm grout layer 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. And hoisting the lower-layer precast concrete tubular pile 2 to a mounting position, and extending the upper end of the steel bar 5 into the beam column node 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 precast concrete pipe pile 1 to the installation position.
S4, inserting the section steel connecting member into the upper-layer precast concrete tubular pile 1, penetrating the section steel connecting member through the beam column node area 4, extending into the lower-layer precast concrete tubular pile 2 to a designed length, and fixing the section steel connecting member;
and S5, pouring appropriate grouting materials or concrete with the same strength into the pile core of the upper precast concrete tubular pile 1 and the grouting layer thereof, the beam-column node area, the structural beam, the grouting layer of the lower precast concrete tubular pile 2 and the pile core thereof from the upper end of the upper precast concrete tubular pile 1 until the pile core is fully filled, namely pouring the pile core, the grouting layer, the beam-column node area 4, the cast-in-place beam 3 of the upper precast concrete tubular pile 1 and the grouting layer and the pile core of the lower precast concrete tubular pile 2 at one time.
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.
Example 2
As shown in fig. 3, the present embodiment is different from embodiment 1 in that: the precast concrete tubular piles 9 used for the upper precast concrete tubular pile column 1 and the lower precast concrete tubular pile column 2 are hollow rectangular columns.
Example 3
As shown in fig. 4, the present embodiment is different from embodiment 1 in that: the section steel connecting component comprises a reinforcement cage formed by binding a stirrup 10 and a longitudinal bar 11 and a steel pipe 13 vertically inserted into the reinforcement cage.
Example 4
As shown in fig. 5, the present embodiment is different from embodiment 1 in that: the section steel connecting component comprises a reinforcement cage formed by binding a stirrup 10 and a longitudinal bar 11 and a steel bar 14 vertically inserted into the reinforcement cage.
Example 5
As shown in fig. 6 and 7, the present embodiment is different from embodiment 1 in that: the section steel connecting component adopts section steel 12.
Example 6
As shown in fig. 8, the present embodiment is different from embodiment 1 in that: the steel section connecting component adopts a steel pipe 13.
Example 7
As shown in fig. 9, the present embodiment is different from embodiment 1 in that: the steel section connecting component adopts a steel bar 14.
In other embodiments, the node area may also be a plate column node area between the upper precast concrete tubular pile column, the lower precast concrete tubular pile column and the hollow floor/flat floor, the section steel connecting member passes through the plate column node area and respectively extends into the upper precast concrete tubular pile column and the lower precast concrete tubular pile column to be anchored, so that the lower end of the upper precast concrete tubular pile column is semi-rigidly connected or hinged with the hollow floor/flat floor, and the upper end of the lower precast concrete tubular pile column is rigidly connected with the hollow floor/flat floor.
In other embodiments, the section steel connecting member may be a reinforcement cage formed by binding stirrups and longitudinal bars.
In other embodiments, the cross section of the node area can also be in the shape of a circle, a diamond or the like, the node can be in a proper shape according to actual engineering requirements, the use is flexible, and the actual installation and operation are convenient.
In other embodiments, the tube piles with prestress or without prestress steel bars, such as PHC/PC/PRCI, of other strength and type, may be used according to actual engineering needs, and the cross-sectional shape of the tube pile may be circular, square or rectangular.
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. Any suitable type, number, strength, etc. of actual requirements may be used for the reinforcement.
In other embodiments, the structural beam is a precast beam or a superposed beam, the construction method is similar to the construction method of the structural beam which is a cast-in-place beam, the beam column nodes are cast in situ, and the specific steps can be adjusted according to the actual conditions in the field and the different types 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 a shaped steel connection structure of precast concrete tubular pile node, includes upper precast concrete tubular pile, lower floor precast concrete tubular pile and structure roof beam/hollow superstructure/flat slab, be the nodal region between upper precast concrete tubular pile, lower floor precast concrete tubular pile and the structure roof beam/hollow superstructure/flat slab, its characterized in that: the upper precast concrete tubular pile column and the lower precast concrete tubular pile column are formed by arranging a section steel connecting component in a pile core hole of the precast concrete tubular pile and pouring concrete in situ, the section steel connecting component penetrates through a node area and respectively extends into the upper precast concrete tubular pile column and the lower precast concrete tubular pile column for anchoring, so that the lower end of the upper precast concrete tubular pile column is semi-rigidly connected or hinged with the structural beam/hollow floor/flat slab, and the upper end of the lower precast concrete tubular pile column is rigidly connected with the structural beam/hollow floor/flat slab.
2. The section steel connecting structure of a precast concrete tubular pile node according to claim 1, characterized in that: the section steel connecting component extends into the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column by one section length or the whole length; the structural steel connecting component is a reinforcement cage formed by binding stirrups and longitudinal bars, or the structural steel connecting component comprises a reinforcement cage formed by binding stirrups and longitudinal bars and a long steel part vertically inserted into the reinforcement cage, or the structural steel connecting component is a long steel part.
3. The section steel connecting structure of a precast concrete tubular pile node according to claim 2, wherein: the long steel product is steel section, steel pipe or steel bar.
4. The section steel connecting structure of a precast concrete tubular pile node according to claim 3, wherein: the concrete strength of the node area, the structural beam/hollow floor/flat slab is the same as that of the prefabricated concrete pipe pile column cores at the upper layer and the lower layer, and the concrete of the node area, the structural beam/hollow floor/flat slab and the prefabricated concrete pipe pile column cores at the upper layer and the lower layer is formed by pouring at one time; and conversely, pouring concrete of the node area, the structural beam/hollow floor/flat floor and the prefabricated concrete pipe pile column cores on the upper layer and the lower layer in batches.
5. The section steel connection structure of a precast concrete tubular pile column node according to claim 4, wherein: the concrete intensity of node district, structure roof beam/hollow superstructure/no roof beam and upper strata, lower floor's precast concrete tubular pile post core is the same, just precast concrete tubular pile's concrete grade is than the concrete grade of node district is 5MPa big, the cross section in node district is greater than the cross section of upper strata, lower floor's precast concrete tubular pile post.
6. The section steel connecting structure of a precast concrete tubular pile node according to any one of claims 1 to 5, characterized in that: and a column cap is arranged at the column top of the lower-layer prefabricated tubular pile.
7. The section steel connection structure of a precast concrete tubular pile column and a node according to claim 6, wherein: and reinforcing steel bars in the lower-layer precast concrete tubular pile body extend upwards into the node area for anchoring.
8. The section steel connecting structure of a precast concrete tubular pile node according to claim 7, wherein: the cross section of the precast concrete pipe pile is circular or rectangular; the cross section of the node area is rectangular, rhombic or circular; the structural beam is a precast beam, a cast-in-place beam or a superposed beam.
9. The section steel connecting structure of a precast concrete tubular pile node according to claim 8, wherein: and a grout layer is arranged between the upper end of the lower-layer precast concrete tubular pile and the node area, and when the structural beam is a precast beam or a superposed beam, the grout layer is arranged between the lower end of the upper-layer precast concrete tubular pile and the beam column node area.
10. The section steel connecting structure of a precast concrete tubular pile node according to claim 9, wherein: the precast concrete tubular pile is a prestressed or non-prestressed reinforced PHC/PC/PRCI/PRCII hollow tubular pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120863568.1U CN216109028U (en) | 2021-04-25 | 2021-04-25 | Profile steel connecting structure of precast concrete tubular pile node |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120863568.1U CN216109028U (en) | 2021-04-25 | 2021-04-25 | Profile steel connecting structure of precast concrete tubular pile node |
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| CN216109028U true CN216109028U (en) | 2022-03-22 |
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