CN113216409A - Connecting structure of precast concrete tubular pile column with diagonal bracing and hollow floor or flat floor - Google Patents
Connecting structure of precast concrete tubular pile column with diagonal bracing and hollow floor or flat floor Download PDFInfo
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- CN113216409A CN113216409A CN202110448035.1A CN202110448035A CN113216409A CN 113216409 A CN113216409 A CN 113216409A CN 202110448035 A CN202110448035 A CN 202110448035A CN 113216409 A CN113216409 A CN 113216409A
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 111
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 239000004567 concrete Substances 0.000 claims abstract description 47
- 238000004873 anchoring Methods 0.000 claims abstract description 7
- 238000011065 in-situ storage Methods 0.000 claims abstract description 5
- 230000002787 reinforcement Effects 0.000 claims description 25
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 12
- 239000011150 reinforced concrete Substances 0.000 claims description 8
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 4
- 239000011440 grout Substances 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 32
- 238000009434 installation Methods 0.000 abstract description 7
- 238000005266 casting Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 12
- 230000003014 reinforcing effect Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000004080 punching Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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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
- E04B1/388—Separate connecting elements
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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
- 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
- E04B1/5837—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially circular 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
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
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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
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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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
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
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Abstract
The invention discloses a connecting structure of a precast concrete tubular pile column with an inclined strut and a hollow floor or a flat slab, which comprises an upper layer precast concrete tubular pile column, a lower layer precast concrete tubular pile column, an inclined strut and a hollow floor/flat slab, wherein the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column are formed by inserting connecting steel bars into precast concrete tubular pile core holes and casting concrete in situ, plate column node areas are arranged between the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column and the hollow floor/flat slab, the connecting steel bars pass through the plate column node areas and respectively extend into the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column for anchoring, the inclined strut is positioned between the two precast concrete tubular pile columns on the same layer, and two ends of the inclined strut are respectively connected with the two plate column node areas on opposite angles. The invention utilizes the additional inclined strut to reinforce the assembled frame structure, thereby improving the lateral force resistance of the structure and improving the seismic performance. The plate column joint has the advantages of simple structure, low cost, convenient construction, safety, reliability, high construction efficiency and low fault tolerance rate of construction and installation.
Description
Technical Field
The invention belongs to the technology of an assembled concrete building structure, and particularly relates to a connecting structure of a prefabricated concrete tubular pile column with an inclined strut and a hollow floor or a flat floor.
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 components are not prefabricated, the proportion of the components such as beams, plates, stairs, balconies, air-conditioning plates and the like is up to 80 percent, so that the proportion of the main body structure adopting the prefabricated components is quite high.
Under the call of national policy, assembly type buildings are always hot topics of the industry, but it is discovered that many difficulties and pain problems are gradually revealed, and the problems are mainly reflected in that:
the section of the precast concrete column needs to be designed according to actual engineering requirements, so that the construction cost is high, and the standardized advantage of an assembled precast member cannot be embodied.
The prefabricated concrete column node connection generally adopts grouting sleeve connection, the sleeve connection technology has higher requirements on installation technology and precision, and the field assembly connection is troublesome.
After the common assembly type frame structure is subjected to the earthquake, the bearing capacity of the structure is reduced to some extent, and further the earthquake-resistant performance is reduced.
The method is limited by the production level and technical capability of the assembly type prefabricated components in China, and the component standardization system is still imperfect, so that the assembly type building cost is high in China, which becomes an important factor for hindering the development of the assembly type building, therefore, the reduction of the assembly type building cost can become strong power for promoting the development of the assembly type building, and the most reliable and direct method for solving the cost problem technically is provided.
Disclosure of Invention
The invention aims to provide a connecting structure of a diagonal bracing precast concrete tubular pile column and a hollow floor or a flat floor, which has the advantages of simple structure, low cost, convenient construction, safety, reliability, high construction efficiency, low fault tolerance rate of construction and installation and improved anti-seismic performance.
The object of the invention is achieved by the following technical measures: a connecting structure of a precast concrete tubular pile column with an inclined strut and a hollow floor or a flat floor is characterized by comprising an upper precast concrete tubular pile column, a lower precast concrete tubular pile column, an inclined strut and a hollow floor/flat floor, the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column are formed by inserting connecting reinforcing steel bars into a pile core hole of the precast concrete tubular pile and casting concrete in situ, plate column node areas are arranged between the upper layer precast concrete pipe pile column and the lower layer precast concrete pipe pile column and the hollow floor/flat slab, the connecting steel bars pass through the joint area of the plate column and respectively extend into the upper layer precast concrete tubular pile column and the lower layer precast concrete tubular pile column for anchoring, the inclined strut is located between two precast concrete tubular pile columns on the same layer, and two ends of the inclined strut are respectively connected with two plate column joint areas located on diagonal positions.
The plate column joint connection mode is simple to operate, convenient to construct, safe, reliable, low in construction and installation fault tolerance rate, construction progress can be accelerated, construction cost is reduced, and the assembled frame structure is reinforced by the aid of the additional inclined struts, so that lateral force resistance of the structure can be improved, and earthquake resistance is improved. The precast concrete tubular pile used by the precast concrete tubular pile column is a low-cost, mass-production and standardized component, tubular piles of different models can be selected according to axial pressure borne by the column in actual engineering, the length of the tubular pile can be cut out from the produced tubular pile according to actual conditions, and the tubular pile in the current market can be produced in batch and has low unit price, so that the production cost can be reduced, the mass production is realized, and the use standardization degree of an assembly component is improved. Moreover, the hollow floor or the flat slab is internally provided with the light filling body, so that the material is saved, the using amount of reinforcing steel bars and concrete is saved, the loss of the template is reduced, and a large number of primary and secondary beams are not arranged, so that the construction is more convenient, the construction period is shortened, the production cost is effectively reduced, and the economic value is obvious; the self weight of the floor is reduced, the earthquake effect is reduced, and the load borne by the beams, the columns and the foundation is reduced; the hollow floor saves concrete in the main structure of the building, reduces the dead weight, reduces the manufacturing cost, increases the net height of the structure and is particularly suitable for multi-story high-rise buildings with large span, large load and large bay.
When the concrete strength of the plate column node area is the same as that of the prefabricated concrete pipe pile core on the upper layer and the lower layer, the concrete of the plate column node area and the prefabricated concrete pipe pile core on the upper layer and the lower layer is formed by one-time pouring; when the concrete strength of the plate column node area is different from that of the prefabricated concrete pipe pile core of the upper layer and the lower layer, the concrete of the plate column node area and the prefabricated concrete pipe pile core of the upper layer and the lower layer is poured in batches.
According to the stress requirement, the steel bars in the lower-layer precast concrete tubular pile body can be chiseled out by a certain length and extend upwards into the plate-column joint area for anchoring, and can also be anchored into the joint area without chiseling out by a certain length.
The connecting steel bars extend into the prefabricated concrete pipe pile columns on the upper layer and the lower layer for a section of length or are arranged in a through length mode, the connecting steel bars are profile steel, steel pipes or steel bars, or the connecting steel bars are steel bar cages formed by binding stirrups and longitudinal bars, or the connecting steel bars are profile steel, steel pipes or steel bars inserted into the steel bar cages formed by binding the stirrups and the longitudinal bars.
In order to improve the bearing capacity, rigidity and anti-cutting capacity of the floor system, the bearing component for supporting the floor system is arranged on the top of the lower layer precast concrete tubular pile column, the bearing component, the upper layer precast concrete tubular pile column, the lower layer precast concrete tubular pile column and the plate column node area are formed by one-time pouring, and the bearing component is a flat supporting plate or a column cap. The size and the reinforcing bars of the supporting component are determined according to the calculation of the bearing capacity of punching, so that the bearing capacity requirement is met. The cross section of the plate-column joint is provided with a column cap and the size of the supporting plate is required to contain a 45-degree punching damage cone, and the requirement of bearing capacity by punching is met.
In order to ensure that the contact surface between the upper layer of the precast concrete tubular pile and the upper end of the plate column node is smooth and firmly bonded, a grout layer is arranged between the lower end of the upper layer of the precast concrete tubular pile and the plate column node area.
The two inclined struts can be one, one unidirectional inclined strut or two, and form an X-shaped crossed inclined strut, and when the inclined struts are steel members, the two inclined struts are connected at crossed positions and can be connected through bolts or welded.
The diagonal brace is a cast-in-place reinforced concrete member, and the diagonal brace and the concrete of the plate column node area and the hollow floor/flat floor are poured at one time; or a prefabricated reinforced concrete member, wherein reinforcing steel bars connected with the inclined struts are reserved in the plate column joint area and extend out of the plate column joint area; or the inclined strut is a steel component, an upper supporting point connecting piece is arranged at the upper end of the inclined strut, a lower supporting point connecting piece is arranged at the lower end of the inclined strut, and the upper supporting point connecting piece and the lower supporting point connecting piece are anchored in the plate column node area.
The upper fulcrum connecting piece and the lower fulcrum connecting piece respectively comprise an anchor plate, a node plate and an embedded part which are fixed on the surface of a plate column node area, one part of the embedded part is anchored in the plate column node area, the other part of the embedded part extends out of the plate column node area to be connected with the anchor plate, the node plate is vertically fixed on the anchor plate, and the end part of the inclined strut is connected with the node plate. The embedded part can adopt anchor bars or profile steels and the like. The anchor plate and the gusset plate can be connected through a high-strength bolt and can also be welded. The end parts of the inclined struts and the gusset plate can be fixedly connected or detachably connected.
The precast concrete tubular pile is a prestressed or non-prestressed reinforcement PHC/PC/PRCI/PRCII hollow tubular pile or other tubular piles of mixed prestressed reinforcement and common reinforcement, and can also be tubular piles with any other strength and type, and the section of the tubular pile can be round, square or rectangular.
Compared with the prior art, the invention has the following remarkable effects:
the invention relates to a novel structure system formed by connecting a precast concrete tubular pile column with an inclined strut and a hollow floor or a flat floor.
The tubular pile production device can select standard tubular piles according to different axial forces required in different practical projects, the tubular pile production standardization degree is high, and the tubular piles with different lengths can be cut off according to the axial forces generated in different projects and the heights of structures when the tubular piles selected in the practical projects are used as pillars. Compared with the conventional prefabricated column, one section of tubular pile meeting the requirement is intercepted from the produced standard tubular pile and used in the actual engineering, and the prefabricated column does not need to be produced according to different axial force, bending moment and length required in different actual engineering, so that the invention can realize mass production, improve the standardization degree of assembled components and reduce the manufacturing cost due to low unit price of the tubular pile.
The hollow floor or the flat slab is internally provided with the light filling body, so that the material is saved, the using amount of reinforcing steel bars and concrete is saved, the loss of the template is reduced, a large number of primary and secondary beams are not provided, the construction is more convenient, the construction period is shortened, the production cost is effectively reduced, and the economic value is obvious; the self weight of the floor is reduced, the earthquake effect is reduced, and the load borne by the beams, the columns and the foundation is reduced; the hollow floor saves concrete in the main structure of the building, reduces the dead weight, reduces the manufacturing cost, increases the net height of the structure, and is particularly suitable for multi-high-rise buildings, underground structures and the like with large span, large load and large bay.
The plate column node connection mode is simple to operate, firm in structural connection, safe, reliable, low in construction and installation fault-tolerant rate and simple in construction process, during construction, the structural columns are installed in place, and construction is conducted layer by layer from bottom to top after formwork supporting is completed, construction is facilitated, construction efficiency is greatly improved, construction cost is reduced, after the lower-layer precast concrete pipe pile is assembled, a temporary fixing frame, a temporary supporting frame and a formwork used in construction can be disassembled and recycled, construction cost is reduced, and pollution and waste are reduced.
Fifthly, concrete with the same strength as the hollow floor is used for the plate-column node, the node area and the hollow floor or the flat floor are cast in situ at one time, construction is convenient, and efficiency is high.
According to the invention, the inclined strut is added in the assembled frame system to form an efficient anti-seismic system, so that the anti-seismic and reinforcing effects are achieved, the lateral force resistance of the structure is improved, and when the inclined strut is made of steel members, the construction is more convenient.
The bracing-added column-floor connecting structure of the present invention may be applied to construction of a bottom floor, an intermediate floor, and a top floor of a building structure, i.e., at least one of the bottom floor, the intermediate floor, and the top floor uses the column-floor connecting structure of the present invention, and when the present invention is applied to one or two of the bottom floor, the remaining floors may use a cast-in-place structural system or a fabricated structural system, so that the present invention may be used in combination with a cast-in-place structural system and a fabricated structural system.
According to the invention, the structural column can use a prestressed or non-prestressed reinforcement PHC/PC/PRCI/PRCII hollow tubular pile or other tubular piles of a mixed prestressed reinforcement and a common reinforcement, or tubular piles of any other strength and type according to the actual engineering requirement, and the section of the tubular pile can be round, square or rectangular; and grouting materials or concrete with any strength can be selected for grouting according to needs, and prestressed or non-prestressed reinforcements of any types can be used, so that the invention has wide application range and is suitable for wide popularization and application.
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;
fig. 2 is a sectional view of example 1 of the present invention (concrete of a core of a precast concrete tubular pile is not shown);
FIG. 3 is a sectional view of embodiment 2 of the present invention;
FIG. 4 is a sectional view of embodiment 3 of the present invention;
FIG. 5 is a sectional view of embodiment 4 of the present invention;
FIG. 6 is a sectional view of embodiment 5 of the present invention;
FIG. 7 is a sectional view of example 6 of the present invention.
Detailed Description
Example 1
As shown in fig. 1 and 2, the connection structure of the precast concrete tubular pile with diagonal bracing and the hollow floor or the flat floor of the invention comprises an upper precast concrete tubular pile 1, a lower precast concrete tubular pile 2, a diagonal bracing 4 and a hollow floor 3, wherein the upper precast concrete tubular pile 1 and the lower precast concrete tubular pile 2 are formed by inserting connecting steel bars 5 into pile core holes of precast concrete tubular piles and casting concrete in situ, the upper precast concrete tubular pile 1 and the lower precast concrete tubular pile 2 can be prestressed or non-prestressed steel bars or PHC/PC/PRCI/PRCII hollow tubular piles mixed with prestressed and non-prestressed steel bars or other tubular piles mixed with prestressed steel bars and common steel bars, and tubular piles of any other strength and type can be used, the cross-sectional shape of the tubular pile of the embodiment is circular, in other embodiments, the cross-sectional shape of the tubular pile can be square or rectangular. In this embodiment, the hollow floor 3 is a cast-in-place floor, and tie bars 6, plate surface reinforcing bars 7, and plate bottom reinforcing bars 8 are arranged in the slab. Plate column node areas 9 are arranged between the upper layer precast concrete tubular pile 1 and the lower layer precast concrete tubular pile 2 and the hollow floor 3, a certain number of filling bodies 10 are regularly arranged at the initial position 11 of the filling bodies of the hollow floor 3, and the plate column node areas 9 are not provided with the filling bodies 10. Connecting reinforcement 5 passes and stretches into anchor in upper precast concrete tubular pile 1 and the precast concrete tubular pile 2 of lower floor respectively in board post nodal area 9, and in this embodiment, connecting reinforcement 5 is by the stirrup with indulge the steel reinforcement cage that muscle ligature becomes, and it stretches into upper and lower floor precast concrete tubular pile one section length or leads to long setting, and in other embodiments, connecting reinforcement also can be shaped steel, steel pipe or rod iron, or insert shaped steel, steel pipe or rod iron in the steel reinforcement cage that becomes by the stirrup and indulge the muscle ligature. When the strength of the concrete in the plate column node area 9 is the same as that of the core holes of the upper precast concrete tubular pile 1 and the lower precast concrete tubular pile 2, the concrete of the plate column node area, the upper precast concrete tubular pile 1 and the lower precast concrete tubular pile 2 is formed by pouring at one time, otherwise, the plate column node area, the upper precast concrete tubular pile and the lower precast concrete tubular pile are poured in batches. In this embodiment, the reinforcing bars 12 in the tubular pile shaft chiseled to a certain length in the lower precast concrete tubular pile 2 extend upward to the plate column node area 9 for anchoring, the portion of the reinforcing bars 12 extending into the plate column node area 9 is curved, and when the reinforcing bars extend far enough in the plate column node area, the portion of the reinforcing bars extending into the plate column node area can be vertical. In other embodiments, according to the stress requirement, a pile body reinforcing steel bar with a certain length does not need to be chiseled out and extends into the node area for anchoring.
The number of the inclined struts 4 can be one or two, the inclined struts 4 are positioned between two lower-layer precast concrete tubular pile columns 2 on the same layer, and two ends of each inclined strut 4 are respectively connected with two plate column node areas 9 positioned on diagonal positions, in the embodiment, the number of the inclined struts 4 is two, the two inclined struts 4 are crossed, the inclined struts 4 are reinforced concrete members and can be cast-in-place reinforced concrete members, and the inclined struts 4, the plate column node areas 9 and the concrete of the hollow floor 3 are cast at one time; or a prefabricated reinforced concrete member, and the plate column joint area 9 is reserved with steel bars connected with the inclined struts 4 and extends out of the plate column joint area 9.
The lower end of the upper layer precast concrete tubular pile column 1 is semi-rigidly connected or hinged with the hollow floor 3, namely, the lower end of the upper layer precast concrete tubular pile column 1 is connected with the hollow floor 3 through a connecting steel bar 5 and grouting material (or concrete) and is semi-rigidly connected or hinged; the upper end of the lower precast concrete tubular pile column 2 is rigidly connected with the hollow floor 3, namely, the upper end of the lower precast concrete tubular pile column 2 is rigidly connected with the hollow floor 3 through the reinforcing steel bars 12, the connecting reinforcing steel bars 5 and the grouting material (or concrete).
In this embodiment, a supporting member for supporting the hollow floor 3 is disposed on the top of the lower precast concrete tubular pile 2, the supporting member is a flat supporting plate 13, the flat supporting plate 13 is formed by casting with the upper precast concrete tubular pile 1, the lower precast concrete tubular pile 2 and the plate column node area 9 at one time, and the size, the reinforcement and the structural requirements of the flat supporting plate 13 can be determined by calculation according to the anti-shear bearing capacity.
In this embodiment, a grout blanket 14 is provided between the lower end of the upper precast concrete tubular pile column 1 and the plate column node region 9.
In general, the strength of the plate column is greatly different, if the concrete with the same grade as the floor slab is used in the node area of the plate column, when the strength of the column is very high, the node can be damaged, but in actual engineering, the node area should not be damaged. And if the node uses the concrete with the same grade as the column, the concrete strength of the node area and the floor slab is different, and separate pouring is needed, so that the method is very inconvenient. In order to solve the problem, under the condition that the difference between the concrete grade of the plate column node area and the concrete grade of the precast concrete pipe pile is greater than 5MPa, the concrete grade of the plate column node area 9 is the same as that of the hollow floor 3, one-time cast-in-place completion can be realized, the construction is convenient, and the efficiency is high.
The construction process in this embodiment is as follows:
And 2, after the preparation work is finished, before the precast concrete tubular pile is hoisted, paving grouting material at the position of the precast concrete tubular pile on the joint surface, hoisting the lower-layer precast concrete tubular pile to the installation position, finishing grouting, and extending the upper end of the steel bar 12 into the slab column node area.
And 4, after the templates are installed and the steel bars are bound, pouring concrete into the core holes and the node areas of the precast concrete tubular piles, the floor slabs and the inclined struts, and after the concrete reaches a certain strength, completing the connection of the precast concrete tubular piles with the inclined struts and the hollow floor or the flat floor to form a structural system.
And 5, repeating the steps 1-4 on the floor constructed by the floor constructed in the step 4 from bottom to top layer by layer. When the structure is constructed to the topmost layer, the connecting steel bars are directly anchored in the node area without leaving a certain length to extend into the upper precast concrete tubular pile.
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. Generally, the sitting slurry is generally the sitting slurry or grouting material which has a strength larger 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.
In other embodiments, when the bottom layer or the middle layer or the top layer adopts a cast-in-place structural system, the construction method is equal to that of the cast-in-place structural system.
Example 2
As shown in fig. 3, the present embodiment is different from embodiment 1 in that: the floor is a flat floor 15, no supporting member is arranged on the top of the lower precast concrete tubular pile column 2, no beam is arranged on the supporting member, floor load is directly transmitted to the foundation through the column by a plate, and the structure has simple force transmission and increases the floor clear height.
Example 3
As shown in fig. 4, the present embodiment is different from embodiment 1 in that: the bearing component arranged on the top of the lower layer precast concrete tubular pile 2 is a column cap 16, and for heavy load, a flat supporting plate is arranged at the upper end of the column cap to reduce the bending moment value in the floor slab and bear the punching force, increase the rigidity of the floor slab and enable the load of the slab to be transferred to the column more slowly. For light loads, a flat support plate may not be disposed above the cap. In the panel-post nodal region 9, it is dimensioned to accommodate a 45 ° die-cut failure cone.
Example 4
As shown in fig. 5, the present embodiment is different from embodiment 1 in that: the inclined strut 4 is a steel component, an upper supporting point connecting piece is arranged at the upper end of the inclined strut 4, a lower supporting point connecting piece is arranged at the lower end of the inclined strut 4, and the upper supporting point connecting piece and the lower supporting point connecting piece are anchored in a plate column node area 9. The upper supporting point connecting piece and the lower supporting point connecting piece respectively comprise an anchor plate 18, a node plate 19 and an embedded part which are fixed on the surface of the plate column node area 9, the embedded part can be anchor bars 17 or profile steel, one part of the anchor bars 17 is anchored in the plate column node area 9, the other part of the anchor bars 17 extends out of the plate column node area 9 to be connected with the anchor plate 18, the node plate 19 is vertically fixed on the anchor plate 18, and the end part of the inclined support 4 is connected with the node plate 19.
Specifically, the anchor bars 17 are embedded in concrete and anchored with reinforcing steel bars during node construction, holes (anchor bar holes) are formed in the anchor plates 18, the anchor bars 17 extend into the anchor bar holes and are fixedly connected with high-strength bolts 20, holes are formed in the node plates 19, the anchor bars 17 extend into the holes of the node plates 19 and are fixedly connected with the high-strength bolts 20, and the node plates 19 are also provided with holes connected with the inclined struts 4 and are also fixedly connected with the high-strength bolts.
The inclined struts 4 can be structural members such as section steel, square steel pipes or I-shaped steel, and are installed after the floor is poured and the formwork is removed, and the crossed parts of the two inclined struts 4 are connected through bolts 21 or welded. The ends of the steel member may be either removably or fixedly attached to the gusset plate 19.
Example 5
As shown in fig. 6, the present embodiment is different from embodiment 4 in that: the floor is a flat floor 15, no supporting member is arranged on the top of the lower precast concrete tubular pile column 2, no beam is arranged on the supporting member, floor load is directly transmitted to the foundation through the column by a plate, and the structure has simple force transmission and increases the floor clear height.
Example 6
As shown in fig. 7, the present embodiment is different from embodiment 4 in that: the bearing component arranged on the top of the lower layer precast concrete tubular pile 2 is a column cap 16, and for heavy load, a flat supporting plate is arranged at the upper end of the column cap to reduce the bending moment value in the floor slab and bear the punching force, increase the rigidity of the floor slab and enable the load of the slab to be transferred to the column more slowly. For light loads, a flat support plate may not be disposed above the cap. In the panel-post nodal region 9, it is dimensioned to accommodate a 45 ° die-cut failure cone.
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 precast concrete tubular pile post and hollow superstructure or no roof beam connection structure that adds bracing which characterized in that: it includes upper precast concrete tubular pile post, lower floor precast concrete tubular pile post, bracing and hollow superstructure/no beam floor, upper precast concrete tubular pile post and lower floor precast concrete tubular pile post all insert connecting reinforcement and cast in situ concrete at precast concrete tubular pile's pile core downthehole and constitute, upper precast concrete tubular pile post and lower floor precast concrete tubular pile post with be the slab post nodal area between the hollow superstructure/no beam floor, connecting reinforcement passes slab post nodal area and stretches into upper precast concrete tubular pile post and anchor in the precast concrete tubular pile post of lower floor respectively, the bracing is located between two precast concrete tubular pile posts on the same floor, just the both ends of bracing are connected with two slab post nodal areas on being in diagonal position respectively.
2. The precast concrete tubular pile with inclined strut of claim 1 and a hollow floor or flat floor connection structure, characterized in that: the inclined struts are one or two, the two inclined struts are crossed, and when the inclined struts are steel members, the two inclined struts are connected at the crossed parts.
3. The precast concrete tubular pile with inclined strut of claim 2 is connected with a hollow floor or a flat floor, characterized in that: when the concrete strength of the plate column node area is the same as that of the prefabricated concrete pipe pile core on the upper layer and the lower layer, the concrete of the plate column node area and the prefabricated concrete pipe pile core on the upper layer and the lower layer is formed by one-time pouring; when the concrete strength of the plate column node area is different from that of the prefabricated concrete pipe pile core of the upper layer and the lower layer, the concrete of the plate column node area and the prefabricated concrete pipe pile core of the upper layer and the lower layer is poured in batches.
4. The precast concrete tubular pile with inclined strut of claim 3 is connected with a hollow floor or a flat floor, characterized in that: and reinforcing steel bars in the lower-layer precast concrete tubular pile body extend upwards into the plate-column joint area for anchoring.
5. The precast concrete tubular pile with inclined strut of claim 4 is connected with a hollow floor or a flat floor, characterized in that: the connecting reinforcement stretches into one section length or leads to long setting in upper strata, the lower floor precast concrete tubular pile post, the connecting reinforcement is shaped steel, steel pipe or rod iron, perhaps the connecting reinforcement is by the stirrup and indulge the steel reinforcement cage that the muscle ligature becomes, perhaps the connecting reinforcement is by stirrup and indulge the steel reinforcement cage interpolation shaped steel, steel pipe or rod iron that the muscle ligature becomes.
6. The precast concrete tubular pile with inclined strut of claim 5 is connected with a hollow floor or a flat floor, characterized in that: and a bearing member for supporting a floor is arranged on the top of the lower-layer precast concrete tubular pile column, the bearing member, the upper-layer precast concrete tubular pile column, the lower-layer precast concrete tubular pile column and the plate column node area are formed by one-time pouring, and the bearing member is a flat supporting plate or a column cap.
7. The precast concrete tubular pile with inclined strut of claim 6 is connected with a hollow floor or a flat floor, characterized in that: and a grout layer is arranged between the lower end of the upper precast concrete tubular pile column and the plate column node area.
8. The precast concrete tubular pile with inclined strut of claim 7 is connected with a hollow floor or a flat floor, characterized in that: the inclined strut is a cast-in-place reinforced concrete member, and the inclined strut and the concrete of the plate column joint area and the hollow floor/flat floor are cast at one time; or the inclined strut is a prefabricated reinforced concrete member, and reinforcing steel bars connected with the inclined strut are reserved in the plate column joint area and extend out of the plate column joint area; or the inclined strut is a steel component, an upper supporting point connecting piece is arranged at the upper end of the inclined strut, a lower supporting point connecting piece is arranged at the lower end of the inclined strut, and the upper supporting point connecting piece and the lower supporting point connecting piece are anchored in the plate column node area.
9. The precast concrete tubular pile with inclined strut of claim 8 and hollow floor or flat floor connection structure, characterized in that: the upper supporting point connecting piece and the lower supporting point connecting piece respectively comprise an anchor plate, a node plate and an embedded part which are fixed on the surface of a plate column node area, one part of the embedded part is anchored in the plate column node area, the other part of the embedded part extends out of the plate column node area to be connected with the anchor plate, the node plate is vertically fixed on the anchor plate, and the end part of the inclined support is connected with the node plate.
10. The precast concrete tubular pile with inclined strut of claim 9 is connected with a hollow floor or a flat floor, characterized in that: the precast concrete tubular pile is a prestressed or non-prestressed reinforcement PHC/PC/PRCI/PRCII hollow tubular pile, and the cross section of the precast concrete tubular pile is circular or rectangular.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110448035.1A CN113216409A (en) | 2021-04-25 | 2021-04-25 | Connecting structure of precast concrete tubular pile column with diagonal bracing and hollow floor or flat floor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110448035.1A CN113216409A (en) | 2021-04-25 | 2021-04-25 | Connecting structure of precast concrete tubular pile column with diagonal bracing and hollow floor or flat floor |
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| CN113216409A true CN113216409A (en) | 2021-08-06 |
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| CN202110448035.1A Withdrawn CN113216409A (en) | 2021-04-25 | 2021-04-25 | Connecting structure of precast concrete tubular pile column with diagonal bracing and hollow floor or flat floor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033202A (en) * | 2021-10-19 | 2022-02-11 | 焦作市建设工程质量检测站 | Seismic damage connecting beam reinforcing structure with monitoring function and reinforcing method thereof |
| CN114232801A (en) * | 2021-12-31 | 2022-03-25 | 海南大学 | Assembled beam-column joint and construction method |
| CN114809772A (en) * | 2022-06-02 | 2022-07-29 | 华南理工大学 | Construction method of assembled column connecting joint and connecting joint |
| CN114808928A (en) * | 2022-06-10 | 2022-07-29 | 中国建筑第七工程局有限公司 | Connecting joint of assembled pile plate structure and construction method |
| CN117569448A (en) * | 2024-01-17 | 2024-02-20 | 广东省建科建筑设计院有限公司 | Beam-column joint applicable to formwork-free system of multi-high-rise factory building and construction method |
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2021
- 2021-04-25 CN CN202110448035.1A patent/CN113216409A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033202A (en) * | 2021-10-19 | 2022-02-11 | 焦作市建设工程质量检测站 | Seismic damage connecting beam reinforcing structure with monitoring function and reinforcing method thereof |
| CN114033202B (en) * | 2021-10-19 | 2022-11-18 | 焦作市建设工程质量检测站 | Seismic damage connecting beam reinforcing structure with monitoring function and reinforcing method thereof |
| CN114232801A (en) * | 2021-12-31 | 2022-03-25 | 海南大学 | Assembled beam-column joint and construction method |
| CN114809772A (en) * | 2022-06-02 | 2022-07-29 | 华南理工大学 | Construction method of assembled column connecting joint and connecting joint |
| CN114808928A (en) * | 2022-06-10 | 2022-07-29 | 中国建筑第七工程局有限公司 | Connecting joint of assembled pile plate structure and construction method |
| CN114808928B (en) * | 2022-06-10 | 2024-03-22 | 中国建筑第七工程局有限公司 | Assembled pile plate structure connecting node and construction method |
| CN117569448A (en) * | 2024-01-17 | 2024-02-20 | 广东省建科建筑设计院有限公司 | Beam-column joint applicable to formwork-free system of multi-high-rise factory building and construction method |
| CN117569448B (en) * | 2024-01-17 | 2024-03-29 | 广东省建科建筑设计院有限公司 | Beam-column joint applicable to formwork-free system of multi-high-rise factory building and construction method |
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