CN118007873A - Assembled reinforced concrete precast column connecting structure and construction method - Google Patents
Assembled reinforced concrete precast column connecting structure and construction method Download PDFInfo
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- CN118007873A CN118007873A CN202410350202.2A CN202410350202A CN118007873A CN 118007873 A CN118007873 A CN 118007873A CN 202410350202 A CN202410350202 A CN 202410350202A CN 118007873 A CN118007873 A CN 118007873A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- 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
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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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5825—Connections for building structures in general of bar-shaped building elements with a closed cross-section
- E04B1/5831—Connections for building structures in general of bar-shaped building elements with a closed cross-section of substantially rectangular form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/168—Spacers connecting parts for reinforcements and spacing the reinforcements from the form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The connecting structure comprises an upper section of a lower layer precast column, a lower section of an upper layer precast column, a cushion block, a spiral positioning device, stirrups, templates, supporting fixing pieces and post-cast high-strength concrete; the upper section of the lower precast column, the lower section of the upper precast column, the cushion block, the spiral positioning device, the stirrups, the supporting fixing pieces and the like are solidified together through post-cast high-strength concrete to form the assembled reinforced concrete precast column connecting structure. According to the invention, the thickness of the cushion block is selected according to the elevation of the upper section of the lower precast column and the post-pouring compaction requirement to control the elevation of the bottom of the upper precast column, the holes of the spiral positioning device of the pre-embedded steel skeleton support frame and the pre-installed spiral positioning device on the internal thread are used for accurately controlling the horizontal positioning of the bottom of the upper precast column, so that the construction precision is improved; the post-pouring adopts high-strength concrete, the steel bars adopt high-strength concrete fault-tolerant position connection technology, the lap joint and anchoring length are reduced, the construction difficulty is reduced, the engineering quality is ensured, and the construction progress is accelerated.
Description
Technical Field
The invention relates to a reinforced concrete column connection and construction method, in particular to an assembled reinforced concrete precast column connection structure and construction method.
Background
The method for connecting and constructing the assembled reinforced concrete frame structure column is one of the keys of the assembled concrete building construction technology, the adjacent prefabricated columns at the upper layer and the lower layer of the frame structure of the assembled concrete building technical standard in the prior art adopt the support leg temporary support and longitudinal stress steel bar extrusion sleeve connection structure, on one hand, the weight of the prefabricated column is large, the support leg temporary support is difficult to prop up and stabilize the prefabricated column, the safety is influenced, and meanwhile, the hoisting alignment error is large; on the other hand, when the prefabricated column is transported, the reserved reinforcing steel bars which extend out of the concrete and are stressed longitudinally are often bent and deformed, so that the alignment between the prefabricated column and the extrusion sleeve is difficult, the construction difficulty is high, and the engineering quality is difficult to guarantee.
Disclosure of Invention
The invention aims to overcome the defects that the temporary support of the supporting leg is difficult to prop up and stabilize a precast column, the safety is influenced, and the precast column is difficult to align with an extrusion sleeve when being installed due to bending deformation during transportation, and provides an assembled reinforced concrete precast column connecting structure and a construction method.
The invention solves the technical problems by adopting the technical scheme that the connecting structure of the assembled reinforced concrete precast column and the construction method thereof comprise an upper section of a lower precast column, a lower section of an upper precast column, a cushion block, a spiral positioning device, stirrups, templates, supporting fixing pieces and post-cast high-strength concrete; the upper section of the lower precast column and the lower section of the upper precast column are correspondingly arranged, the cushion block, the spiral positioning device, the stirrups, the templates and the supporting fixing pieces are arranged between the upper section of the lower precast column and the lower section of the upper precast column, the upper section of the lower precast column comprises a longitudinal reserved lap joint steel bar A, the lower section of the upper precast column comprises a longitudinal reserved lap joint steel bar B, and the longitudinal reserved lap joint steel bar A, the longitudinal reserved lap joint steel bar B, the stirrups and the templates form a pouring area; the upper section of the lower precast column, the lower section of the upper precast column, the cushion block, the spiral positioning device, the stirrups, the supporting fixing pieces and the like are solidified together through post-cast high-strength concrete to form the assembled reinforced concrete precast column connecting structure.
Further, lower floor's precast column upper segment still includes pre-buried steel skeleton support frame, pre-buried steel skeleton support frame includes by L shape owner steel skeleton and steel hoop, L shape owner steel skeleton is provided with four and all has screw rod trompil and internal thread, four L shape owner steel skeletons are fixed and with the steel hoop and vertically reserve overlap joint reinforcing bar A and pour the lower floor's precast column that forms and contain lower floor's precast column upper segment at the mill.
Further, the lower section of the upper layer prefabricated column further comprises a prefabricated core column, the prefabricated core column comprises prefabricated core column auxiliary reinforcing steel bars and embedded sleeves, and the longitudinal reserved lap joint reinforcing steel bars B, the prefabricated core column auxiliary reinforcing steel bars and the embedded sleeves are poured in factories to form the upper layer prefabricated column comprising the lower section of the upper layer prefabricated column.
Further, the template is a common template needing to be disassembled or a template needing no disassembly; the template is provided with a fixing hole, and the supporting and fixing piece comprises a bolt, a bolt with a sleeve, a nut and a pad; the support fixing piece is used for supporting and fixing the template.
The invention further solves the technical problems by adopting the technical scheme that the construction method of the prefabricated reinforced concrete column connecting structure comprises the following steps:
s1, purchasing and manufacturing a lower-layer prefabricated column comprising an upper section of the lower-layer prefabricated column;
S2, purchasing and manufacturing an upper layer prefabricated column comprising the lower section of the upper layer prefabricated column;
S3, purchasing and manufacturing a cushion block, a spiral positioning device, stirrups, a template and a supporting and fixing piece according to design requirements;
S4, transporting the lower-layer prefabricated column comprising the upper section of the lower-layer prefabricated column and the upper-layer prefabricated column comprising the lower section of the upper-layer prefabricated column to a construction site, and performing construction and installation according to requirements;
S5, installing stirrups, supporting fixing pieces and templates according to design requirements.
S6, enclosing a pouring area between the upper section of the lower-layer prefabricated column and the lower section of the upper-layer prefabricated column and the template according to design requirements; the upper section of the lower precast column, the lower section of the upper precast column, the cushion block, the spiral positioning device, the stirrups, the supporting fixing pieces and the like are solidified together through post-cast high-strength concrete to form the assembled reinforced concrete precast column connecting structure.
Further, after the lower-layer precast column comprising the upper section of the lower-layer precast column and the upper-layer precast column comprising the lower section of the upper-layer precast column are transported to the site in S4, the lower-layer precast column is installed and fixed according to the design requirement, after the lower-layer beam slab is installed and constructed and the upper construction condition is met, the proper thickness of a cushion block is selected from the upper section of the lower-layer precast column and placed on the middle part of the upper section of the lower-layer precast column according to the elevation and the post-pouring compaction requirement of the upper section of the lower-layer precast column, a screw rod hole on a pre-buried steel rib support frame and a pre-installation spiral positioning device on an internal thread are pre-arranged, and stirrups are pre-placed outside a longitudinal reserved lap joint steel bar A of the upper section of the lower-layer precast column; the prefabricated stem of the lower section of the upper layer prefabricated column is hoisted and placed on the upper surface of the middle part of the upper section of the lower layer prefabricated column according to the design requirement, the elevation position of the prefabricated stem of the lower section of the upper layer prefabricated column is finely adjusted through the thickness of the cushion block and the like, and the horizontal positions of the prefabricated stem of the lower section of the upper layer prefabricated column and the front, back, left and right of the lower section of the upper layer prefabricated column are finely adjusted through a spiral positioning device and the like.
In summary, the invention has the following beneficial technical effects:
The lower section of the upper layer prefabricated column is provided with the prefabricated core column to replace the adjacent prefabricated columns at the upper layer and the lower layer of the frame structure in the prior art, and the support leg is adopted for temporary support, so that the overall stability of the upper layer prefabricated column during construction and installation is improved; the thickness of the cushion block is selected according to the elevation of the upper section of the lower-layer prefabricated column and the post-pouring compaction requirement, the spiral positioning device of the pre-embedded steel support frame is provided with holes, and the spiral positioning device is pre-installed on the internal wire, so that the accurate positioning of the upper-layer prefabricated column and the post-pouring concrete compaction are facilitated; the post-pouring adopts high-strength concrete, the steel bars adopt a high-strength concrete fault-tolerant position connection technology, the anchoring length of the HRB400 longitudinal tension steel bars in the C30 concrete in the conventional technology is 35d (concrete structure design specification GB 50010-2022), the anchoring length of the HRB400 longitudinal tension steel bars in the CF120 high-strength concrete is 11d (assembled concrete structure steel bar dislocation connection technical specification T/CECS 1222-2022), and the lap joint and the anchoring length are reduced by more than 2/3; the steel bar adopts the high-strength concrete fault-tolerant position connection technology to replace the extrusion sleeve connection in the prior art, so that the problem that the alignment is difficult and the grouting in the sleeve is not full during installation is avoided, the construction difficulty is reduced, the engineering quality is ensured, and the assembly efficiency is improved.
Drawings
FIG. 1 is a schematic view showing a vertical sectional structure of an embodiment of a fabricated reinforced concrete precast column connecting structure and a construction method according to the present invention;
FIG. 2 is a schematic view of the upper section of the lower column of FIG. 1;
FIG. 3 is a schematic view of the structure of the pre-buried steel skeleton support frame in FIG. 2;
FIG. 4 is a schematic view of the lower section of the upper column of FIG. 1;
FIG. 5 is a schematic view in section A-A of FIG. 1;
FIG. 6 is a schematic view of the structure of the pre-buried steel skeleton support frame in FIG. 5;
FIG. 7 is a schematic diagram of the template of FIG. 5;
fig. 8 is a schematic view of the prefabricated stem structure of fig. 5.
The invention relates to an assembled reinforced concrete precast column connecting structure and a construction method embodiment.
Reference numerals illustrate:
1. Prefabricating a column connecting structure; 2. the lower layer is prefabricated at the upper section of the column; 3. the lower section of the upper prefabricated column; 4. a cushion block; 5. a spiral positioning device; 6. stirrups; 7. a template; 8. a support fixing member; 9. embedding a steel rib support frame; 10. longitudinally reserving overlap joint reinforcing steel bars A; 11. an L-shaped main steel skeleton; 12. a steel hoop; 13. opening holes and inner threads; 14. pre-manufacturing a stem; 15. longitudinally reserving overlap joint reinforcing steel bars B; 16. pre-manufacturing auxiliary reinforcing steel bars of the core column; 17. embedding a sleeve; 18. fixing the hole; 19. the calcium silicate board is free from disassembling the template.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1 to 8, the embodiment comprises a lower layer precast column upper section 2, an upper layer precast column lower section 3, a cushion block 4, a spiral positioning device 5, stirrups 6, a template 7 and a supporting fixing piece 8, and a precast column connecting structure 1 is formed by post-pouring high-strength concrete.
The upper section 2 of the lower prefabricated column comprises an embedded steel skeleton support frame 9 and a longitudinal reserved lap joint steel bar A10; the embedded steel skeleton support frame 9 is formed by connecting four L-shaped main steel skeletons 11 and steel hoops 12 at the outer sides of the L-shaped main steel skeletons 11; the four L-shaped main steel frameworks are provided with holes of the spiral positioning device 5 and inner wires 13 according to requirements, the four L-shaped main steel frameworks with the holes of the spiral positioning device 5 and the inner wires 13 are welded with the steel hoops 12 on the outer side according to requirements and then fixed, and are prefabricated and poured together with a longitudinal reserved lap joint steel bar A10 in a factory to form a lower-layer prefabricated column comprising the upper section 2 of the lower-layer prefabricated column.
The lower section 3 of the upper layer prefabricated column comprises a prefabricated core column 14, a longitudinal reserved lap joint reinforcing steel bar B15 and the like; the prefabricated core column 14 consists of prefabricated core column auxiliary reinforcing steel bars 16 and embedded sleeves 17; after the longitudinal reserved lap joint reinforcing steel bar B15, the prefabricated core column auxiliary reinforcing steel bar 16, the embedded sleeve 17 and the like are fixed according to requirements, a template and the like are arranged in a factory to perform prefabrication casting together to form an upper layer prefabricated column comprising an upper layer prefabricated column lower section 3.
Cushion 4 is located between the adjacent lower floor's precast column upper segment 2 of precast column connection structure 1 and upper strata precast column hypomere 3, and cushion 4 is according to the closely knit requirement of elevation and the back watering of lower floor's precast column upper segment 2, selects suitable thickness and be located lower floor's precast column upper segment 2 middle part top, adjusts the upper and lower elevation position of upper strata precast column hypomere 3 to bear the pressure of upper strata precast column hypomere 3 transmission to lower floor's precast column upper segment 2 when installing.
The spiral positioning device 5 is arranged on screw rod openings and inner wires 13 of four L-shaped main steel frameworks, after the upper-layer prefabricated column is hoisted, the L-shaped main steel frameworks of the four screw rod openings and the inner wires 13 are used for adjusting the horizontal positions of the prefabricated core column 14 and the lower section 3 of the upper-layer prefabricated column according to requirements, and the function of temporarily fixing the horizontal positions of the lower section 3 of the upper-layer prefabricated column when the lower section 3 of the upper-layer prefabricated column is installed is born.
The stirrup 6 is located between the adjacent lower floor precast column upper segment 2 of precast column connection structure 1 and upper strata precast column hypomere 3, is located adjacent vertical reserved overlap joint reinforcing bar A10 and vertical reserved overlap joint reinforcing bar B15 outside simultaneously and wraps the reservation vertical overlap joint reinforcing bar together.
The template 7 is a calcium silicate board disassembly-free template 19 with a dovetail groove on one surface with a pre-opened fixing hole 18, and the surface of the calcium silicate board disassembly-free template with the dovetail groove faces to the inner side of the connecting joint so as to be convenient for being poured with concrete into a whole; the support fixture 8 comprises a bolt, a sleeved bolt, a nut, and a washer.
The template 7 is fixedly arranged around the adjacent lower-layer precast column upper section 2 and the upper-layer precast column lower section 3 on the pre-buried sleeve 17 and the precast column connecting structure 1 through the supporting and fixing piece 8; the longitudinal reserved lap reinforcement A10 of the upper section 2 of the adjacent lower precast column and the longitudinal reserved lap reinforcement B15 of the lower section 3 of the upper precast column, the high-strength concrete and the like are poured in the area surrounded by the stirrups 6 and the surrounding templates 7 to form the assembled reinforced concrete precast column connecting structure 1.
The construction method of the prefabricated reinforced concrete column connecting structure comprises the following steps:
s1, purchasing or manufacturing materials such as a pre-buried steel rib support frame 9 of the upper section 2 of the lower prefabricated column and a longitudinally reserved lap joint steel bar A10 of the upper section 2 of the lower prefabricated column; the embedded steel skeleton support frame 9 consists of four L-shaped main steel skeletons and steel hoop 12 connecting pieces at the outer sides of the L-shaped main steel skeletons; the four L-shaped main steel frameworks are provided with screw holes and inner wires 13 according to requirements, the four L-shaped main steel frameworks with the screw holes and the inner wires 13 are welded with the steel hoops 12 on the outer side according to requirements and then fixed, and are prefabricated and poured together with longitudinal lap joint steel bars of the upper section 2 of the reserved lower prefabricated column in a factory with templates and the like to form a lower prefabricated column comprising the upper section 2 of the lower prefabricated column;
S2, purchasing or manufacturing a longitudinal reserved lap joint steel bar B15 of the lower section 3 of the upper layer prefabricated column, an auxiliary steel bar of the prefabricated core column 14 and a pre-buried sleeve 17; after the longitudinally reserved lap joint steel bars B15, the auxiliary steel bars of the prefabricated core column 14, the embedded sleeves 17 and the like of the lower section 3 of the upper-layer prefabricated column are fixed according to requirements, a template and the like are arranged in a factory to perform prefabricated pouring together to form the upper-layer prefabricated column comprising the lower section 3 of the upper-layer prefabricated column;
S3, purchasing or manufacturing a cushion block 4, a spiral positioning device 5 and stirrups 6 according to design requirements;
S4, purchasing or manufacturing a template 7 according to design requirements, wherein the template 7 is a calcium silicate board disassembly-free template 19 with a prefabricated fixing hole 18 and a dovetail groove on one surface;
s5, purchasing or manufacturing a supporting and fixing piece 8 according to design requirements, wherein the supporting and fixing piece 8 comprises bolts, bolts with sleeves, nuts, gaskets and the like;
S6, transporting the lower-layer prefabricated column to a construction site, installing and fixing the lower-layer prefabricated column according to design requirements, after installing or constructing a lower-layer beam slab and having upper construction conditions, placing a cushion block 4 with proper thickness on the middle part of the upper section 2 of the lower-layer prefabricated column according to elevation and post-pouring compaction requirements of the upper section 2 of the lower-layer prefabricated column, pre-installing a spiral positioning device 5 on a screw hole and an inner wire 13 on a pre-embedded steel support frame 9, and reserving a longitudinal lap joint steel bar A outside the upper section 2 of the lower-layer prefabricated column for pre-placing stirrups 6;
S7, transporting the upper-layer prefabricated column to a construction site, hoisting the prefabricated core column 14 of the lower-layer prefabricated column section 3 according to design requirements, placing the prefabricated core column 14 on the cushion block 4 obtained above the middle part of the upper-layer prefabricated column section 2, finely adjusting the upper elevation and the lower elevation of the prefabricated core column 14 of the lower-layer prefabricated column section 3 through the thickness of the cushion block 4 and the like, finely adjusting the horizontal positions of the prefabricated core column 14 of the upper-layer prefabricated column section 3 and the upper-layer prefabricated column section 3 in the front-back-left-right direction through a spiral positioning device 5 and the like;
s8, installing stirrups 6 according to design requirements;
S9, installing a supporting fixing piece 8 and a template 7 according to design requirements, wherein the template 7 is installed and fixed on a pre-embedded sleeve 17 of a prefabricated core column 14 of the lower section 3 of the upper prefabricated column and the periphery of the upper section 2 of the lower prefabricated column and the lower section 3 of the upper prefabricated column through the supporting fixing piece 8, and one surface of the calcium silicate board, which is free from disassembly and provided with dovetail groove silicon, faces the inner side of a connecting node so as to be convenient to be poured with concrete into a whole; and pouring high-strength concrete and the like in the area surrounded by the adjacent lower precast column upper section 2, the upper precast column lower section 3, the reserved longitudinal lap joint steel bars, the stirrups 6 and the surrounding templates 7, so as to finish the construction of the prefabricated reinforced concrete precast column connecting node.
The foregoing are preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component. Therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (4)
1. The connecting structure of the assembled reinforced concrete precast column is characterized by comprising an upper section (2) of a lower precast column, a lower section (3) of the upper precast column, a cushion block (4), a spiral positioning device (5), stirrups (6), templates (7), supporting fixing pieces (8) and post-cast high-strength concrete; the lower-layer prefabricated column upper section (2) and the upper-layer prefabricated column lower section (3) are correspondingly arranged, the cushion block (4), the spiral positioning device (5), the stirrup (6), the template (7) and the supporting fixing piece (8) are arranged between the lower-layer prefabricated column upper section (2) and the upper-layer prefabricated column lower section (3), the lower-layer prefabricated column upper section (2) comprises a longitudinal reserved lap joint steel bar A (10), the upper-layer prefabricated column lower section (3) comprises a longitudinal reserved lap joint steel bar B (15), and a pouring area is formed by the longitudinal reserved lap joint steel bar A (10), the longitudinal reserved lap joint steel bar B (15), the stirrup (6) and the template (7); the lower layer precast column upper section (2), the upper layer precast column lower section (3), the cushion block (4), the spiral positioning device (5), the stirrup (6), the supporting fixing piece (8) and the like are solidified together through post-pouring high-strength concrete to form an assembled reinforced concrete precast column connecting structure; the lower-layer prefabricated column upper section (2) further comprises an embedded steel rib support frame (9), the embedded steel rib support frame (9) comprises an L-shaped main steel skeleton (11) and steel hoops (12), the L-shaped main steel skeleton (11) is provided with four screw holes and inner wires (13), and the four L-shaped main steel skeletons (11) are fixed with the steel hoops (12) and are cast with a longitudinal reserved lap joint steel bar A (10) in a factory to form the lower-layer prefabricated column upper section (2); the upper-layer precast column lower section (3) further comprises a precast core column (14), the precast core column (14) comprises a precast core column auxiliary reinforcing steel bar (16) and a pre-buried sleeve (17), and the longitudinal reserved lap joint reinforcing steel bar B (15), the precast core column auxiliary reinforcing steel bar (16) and the pre-buried sleeve (17) are poured in a factory to form the upper-layer precast column lower section (3).
2. The prefabricated reinforced concrete column connecting structure according to claim 1, wherein the formwork (7) is a common formwork requiring disassembly or a disassembly-free formwork; the template (7) is provided with a fixing hole (18), and the supporting and fixing piece (8) comprises a bolt, a sleeved bolt, a nut and a gasket; the supporting and fixing piece (8) is used for supporting and fixing the template (7).
3. A method of constructing the fabricated reinforced concrete precast column connection structure of any one of claims 1 to 2, comprising the steps of:
s1, purchasing and manufacturing a lower-layer prefabricated column comprising an upper section (2) of the lower-layer prefabricated column;
S2, purchasing and manufacturing a lower-layer prefabricated column comprising an upper-layer prefabricated column lower section (3);
s3, purchasing and manufacturing a cushion block (4), a spiral positioning device (5), stirrups (6), a template (7) and a supporting and fixing piece (8) according to design requirements;
s4, conveying the lower-layer prefabricated column and the upper-layer prefabricated column to a construction site, and performing installation construction according to requirements;
s5, installing stirrups (6), supporting fixing pieces (8) and templates (7) according to design requirements;
s6, enclosing a pouring area on the upper section (2) of the lower precast column, the lower section (3) of the upper precast column and the template (7) according to design requirements; the lower layer precast column upper section (2), the upper layer precast column lower section (3), the cushion block (4), the spiral positioning device (5), the stirrup (6), the supporting fixing piece (8) and the like are solidified together through post-cast high-strength concrete to form the assembled reinforced concrete precast column connecting structure.
4. The construction method of the assembled reinforced concrete precast column connecting structure according to claim 1, wherein after the lower precast column and the upper precast column in the step S4 are transported to the site, the lower precast column is installed and fixed according to design requirements, after the lower beam plate is installed or constructed and the upper construction condition is met, a proper cushion block (4) thickness is selected from the upper section (2) of the lower precast column to be placed on the middle part of the upper section (2) of the lower precast column according to elevation and post-pouring compaction requirements of the upper section (2) of the lower precast column, a screw positioning device (5) is pre-installed on a screw hole and an internal thread (13) on a pre-buried steel support frame (9), and a stirrup (6) is pre-placed on the outer side of a lap joint steel bar A (10) in a longitudinal reserved mode of the upper section (2) of the lower precast column; the prefabricated core column (14) on the lower-layer prefabricated column section (3) is hoisted and placed on the cushion block (4) above the middle part of the lower-layer prefabricated column section (2) according to design requirements, the upper elevation position and the lower elevation position of the prefabricated core column (14) on the upper-layer prefabricated column section (3) are finely adjusted through the thickness of the cushion block (4) and the like, and the horizontal positions of the prefabricated core column (14) on the upper-layer prefabricated column section (3) and the upper-layer prefabricated column section (3) are finely adjusted through the spiral positioning device (5) and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410350202.2A CN118007873A (en) | 2024-03-26 | 2024-03-26 | Assembled reinforced concrete precast column connecting structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410350202.2A CN118007873A (en) | 2024-03-26 | 2024-03-26 | Assembled reinforced concrete precast column connecting structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118564087A (en) * | 2024-06-27 | 2024-08-30 | 中国五冶集团有限公司 | A device for installing, positioning and adjusting a prefabricated concrete column for a cup-shaped foundation |
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2024
- 2024-03-26 CN CN202410350202.2A patent/CN118007873A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118564087A (en) * | 2024-06-27 | 2024-08-30 | 中国五冶集团有限公司 | A device for installing, positioning and adjusting a prefabricated concrete column for a cup-shaped foundation |
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