CN113389268A - Assembly type reinforced concrete frame disassembly-free formwork combined connecting system and construction method thereof - Google Patents
Assembly type reinforced concrete frame disassembly-free formwork combined connecting system and construction method thereof Download PDFInfo
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- CN113389268A CN113389268A CN202110727266.6A CN202110727266A CN113389268A CN 113389268 A CN113389268 A CN 113389268A CN 202110727266 A CN202110727266 A CN 202110727266A CN 113389268 A CN113389268 A CN 113389268A
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 198
- 238000009415 formwork Methods 0.000 title claims abstract description 40
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 239000004567 concrete Substances 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000013461 design Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003466 welding Methods 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/19—Three-dimensional framework structures
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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
- E04B1/19—Three-dimensional framework structures
- E04B1/1903—Connecting nodes 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
- E04B1/41—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
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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
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- Architecture (AREA)
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- Structural Engineering (AREA)
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- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides an assembly type reinforced concrete framework disassembly-free formwork combined connecting system and a construction method thereof, wherein the connecting system comprises a plurality of prefabricated reinforced concrete beams and a plurality of prefabricated reinforced concrete columns, and two vertically adjacent prefabricated reinforced concrete columns are connected and fixed through embedded steel pipes; the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete column which are adjacent at the midspan are connected with the four adjacent prefabricated reinforced concrete beams through center column nodes; the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete column which are adjacent to each other at the side span are connected with the three adjacent prefabricated reinforced concrete beams through side column nodes; the prefabricated reinforced concrete columns which are adjacent up and down at the corner points are connected with the two adjacent prefabricated reinforced concrete beams through corner column joints; the prefabricated reinforced concrete beam and the upper prefabricated reinforced concrete column are fixed on the lower prefabricated reinforced concrete column and the system reinforced concrete beam through temporary supports respectively. The prefabricated reinforced concrete column and the prefabricated reinforced concrete beam are connected in the joint area through the corner column joint, the side column joint and the center column joint.
Description
Technical Field
The invention belongs to the technical field of prefabricated assembly type construction, and particularly relates to an assembly type reinforced concrete framework disassembly-free formwork combined connecting system and a construction method thereof.
Background
The prefabricated reinforced concrete building is characterized in that main or partial building components and parts are prefabricated and produced in a factory and then are formed into an integral structural system form through a safe and effective connection technology on site. Because main or partial building components and parts are prefabricated in advance in a factory in an industrialized manner, the influence degree of field operation by seasons and climate is remarkably small, the quality of the industrialized prefabricated components is also easily guaranteed, the workload of field wet operation is greatly reduced, the construction period is remarkably reduced, the influence of engineering construction on the surrounding environment is remarkably reduced, the development requirement of green construction is met, and the method is one of the main forms of developing green buildings and green construction in China.
The reinforced concrete assembled frame structure is the main form of assembled building structure, and is the main form for developing industrialization of public buildings, residential buildings, industrial buildings and the like. The joint connection structure is the key technology of the assembly type reinforced concrete frame structure. The beam-column connection node becomes a weak area of a structural system if the connection area of the beam-column connection node lacks good connection performance. Due to the early occurrence of the plastic hinges at the beam end and the column end, the shearing resistance of the reinforced concrete in the node core area is degraded too fast, the control capability of node damage is not guaranteed, and the integral ductility and energy consumption capability of the structure under the action of an earthquake are insufficient.
A great deal of research is being conducted around the node connection technology at home and abroad, and the node connection technology can be roughly divided into a dry connection and a wet connection. The dry method connection is generally convenient to construct, but various connectors are different in cost, the economical efficiency of structural connection is affected, grouting treatment is generally needed, and the process is relatively complicated. The wet connection mainly adopts a post-cast joint form, the post-cast joint needs on-site reinforced concrete engineering and template engineering, the construction efficiency is relatively low, and the connection area needs to take construction measures, so that the bending shear performance and the ductility energy consumption capability of the wet connection area of the post-cast joint are improved.
Disclosure of Invention
In view of the above, the present invention aims to provide a disassembly-free formwork connecting system for an assembled reinforced concrete frame and a construction method thereof, which overcome the defects of the above factors in the prior art, are safer and more reliable, and are efficient and convenient to construct.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an assembly type reinforced concrete frame disassembly-free formwork combined connecting system comprises a plurality of prefabricated reinforced concrete beams and a plurality of prefabricated reinforced concrete columns, wherein two adjacent prefabricated reinforced concrete columns are connected and fixed through embedded steel pipes;
the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete beam at the midspan position are connected with the four adjacent prefabricated reinforced concrete beams through center column nodes, and the four adjacent prefabricated reinforced concrete beams form a cross structure; the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete beam at the side span are connected with the three adjacent prefabricated reinforced concrete beams through side column joints, and the three adjacent prefabricated reinforced concrete beams form a T-shaped structure; the prefabricated reinforced concrete columns which are adjacent up and down at the corner points are connected with the two adjacent prefabricated reinforced concrete beams through corner column joints, and the two adjacent prefabricated reinforced concrete beams form an L-shaped structure; prefabricated reinforced concrete beam is fixed in prefabricated reinforced concrete column of lower floor or lower floor's floor through interim the support, prefabricated reinforced concrete column of upper strata also supports fixed bearing on prefabricated reinforced concrete beam through interim, every node all includes a plurality of connecting piece curb plates and the fixed curb plate of connecting piece of wearing, one wears the cooperation of connecting piece curb plate and the fixed curb plate of connecting piece and uses, it is equipped with a plurality of connecting piece curb plate preformed holes of wearing that are used for the on-the-spot connecting piece usefulness of alternating on every wearing the connecting piece curb plate, the connecting piece is installed on wearing the connecting curb plate through first connection converting part, it is corresponding, be equipped with on the fixed curb plate of connecting piece and connect the converting part with connecting piece complex second.
Furthermore, the first connection conversion part and the second connection conversion part have the same structure and respectively comprise two horizontal bottom fixing plate sections, two inclined plate sections, a horizontal upper fixing plate section, a bottom force transmission fixing nut and an end anchor connecting piece, wherein two ends of the horizontal upper fixing plate section are respectively connected with one horizontal bottom fixing plate section through one inclined plate section, and the bottom force transmission fixing nut is arranged at the bottom of the horizontal upper fixing plate section;
the end anchor connecting piece comprises a screw rod, a fixing nut, a cushion block and an end anchor plate, a horizontal bottom fixing plate section preformed hole for inserting the screw rod is formed in the horizontal bottom fixing plate section, a horizontal upper fixing plate section preformed hole for inserting the connecting piece is formed in the horizontal upper fixing plate section, the screw rod is fixed to the end anchor plate through the cushion block, the end anchor plate is fixed to a corresponding side plate, the screw rod is connected with the fixing nut after penetrating through the horizontal bottom fixing plate section preformed hole, the connecting piece penetrates through a bottom force transmission fixing nut of a first connecting conversion piece and the horizontal upper fixing plate section preformed hole in sequence, then extends into a horizontal upper fixing plate section preformed hole of a second connecting conversion piece and is connected with the bottom force transmission fixing nut of the second connecting conversion piece.
Further, the center pillar node includes that two center pillar post ends wear the connecting piece curb plate, two center pillar post end fixed curb plates, four center pillar beam ends wear the connecting piece curb plate and four center pillar beam ends fixed curb plates, and a center pillar post end is worn the connecting piece curb plate and a center pillar post end fixed curb plate and is constituted a set ofly and just to arranging, and a center pillar beam end is worn the connecting piece curb plate and a center pillar beam end fixed curb plate and is constituted a set ofly and just to arranging, wears the connecting piece curb plate and all is fixed in on the corresponding fixed curb plate with the end nut through the connecting piece.
Further, the side column node includes that two side column ends wear the connecting piece curb plate, two side column end fixed curb plates, three side column beam ends wear the connecting piece curb plate and three side column beam ends fixed curb plates, a side column end wears the connecting piece curb plate and a side column end fixed curb plate and constitutes a set ofly and just to arranging, a side column beam end wears the connecting piece curb plate and a side column beam ends fixed curb plate and constitutes a set ofly and just to arranging, wears the connecting piece curb plate and all is fixed in on the corresponding fixed curb plate through the connecting piece and with the end nut.
Further, the corner post node includes that two corner post column ends wear the connecting piece curb plate, two fixed curb plates of corner post column end, two corner post beam ends wear the connecting piece curb plate and two fixed curb plates of corner post beam-ends, a corner post column end is worn the connecting piece curb plate and is constituted a set ofly and just to arranging with a fixed curb plate of corner post column end, a corner post beam-end is worn the connecting piece curb plate and is constituted a set ofly and just to arranging with a fixed curb plate of corner post beam-ends, it all is fixed in on the corresponding fixed curb plate through a plurality of connecting pieces and with the end nut to wear the connecting piece curb plate.
Furthermore, one of the side column end fixing side plates of the side column node and the two adjacent side column end fixing side plates are integrally formed.
Furthermore, the corner post end fixing side plate of the corner post node and the adjacent corner post end fixing side plate are integrally formed.
Furthermore, the prefabricated reinforced concrete column comprises a prefabricated reinforced concrete column upper end and a prefabricated reinforced concrete column lower end, a first shear-resistant groove is reserved at the prefabricated reinforced concrete column upper end, and a small-diameter steel pipe for supporting and positioning an upper-layer column is embedded in the first shear-resistant groove; the lower end of the prefabricated reinforced concrete column is provided with a raised shear key groove, a hollow large-diameter steel pipe used for being sleeved outside the small-diameter steel pipe is embedded in the prefabricated reinforced concrete column, and the large-diameter steel pipe is used for supporting and positioning the upper-layer prefabricated reinforced concrete column; respectively placing a first reinforced concrete cage at the upper end of the prefabricated reinforced concrete column and inside the lower end of the prefabricated reinforced concrete column, and arranging first embedded parts used for being connected with corresponding temporary supports on the outer surfaces of the first reinforced concrete cage and the prefabricated reinforced concrete column;
the both ends of precast reinforced concrete roof beam are equipped with the anti-shear groove of second respectively, place second reinforced concrete cage in precast reinforced concrete roof beam's inside, set up the second built-in fitting on precast reinforced concrete roof beam's surface, the second built-in fitting is used for linking to each other with corresponding interim support and fixes the precast reinforced concrete post of upper strata.
Furthermore, the connecting piece is a bolt, a screw rod or a steel bar, the end nut is a fixed nut at the end part of the connecting piece, and the end nut is used for screwing the connecting piece.
A construction method of an assembly type reinforced concrete frame disassembly-free formwork combined connection system specifically comprises the following steps:
(1) in a factory, prefabricating a connecting piece side plate and a connecting piece fixing side plate of a disassembly-free formwork by using ultra-high performance concrete, and prefabricating a reinforced concrete beam and a reinforced concrete column by using common concrete;
(2) on the construction site, according to the distribution of the building plane, firstly, temporarily supporting and fixing a first-layer prefabricated reinforced concrete column, and embedding reserved steel bars of the first-layer prefabricated reinforced concrete column and a steel bar project of a bottom foundation connecting beam or a bottom floor system according to the design requirement;
(3) pouring a bottom foundation coupling beam or a bottom integral-pouring floor concrete project, and maintaining to a design age;
(4) hoisting and positioning the prefabricated reinforced concrete beam, and fixing the prefabricated reinforced concrete beam by adopting temporary support;
(5) selecting matched disassembly-free formwork combination side column nodes, middle column nodes and corner column nodes, and fixing the side plates penetrating the connecting pieces to the corresponding fixed side plates by using the connecting pieces and the end nuts;
(6) installing a bottom die of a reinforced concrete beam node area, wherein the bottom die adopts a traditional steel combined template, a wood template or a plastic template;
(7) laying a bottom plate of the prefabricated reinforced concrete laminated slab, and sealing the splicing seams of the laminated slab;
(8) according to the distribution of a building plane, fixing the layer of prefabricated reinforced concrete columns by adopting temporary supports, and embedding reserved steel bars of the layer of prefabricated reinforced concrete columns and the floor slab according to design requirements;
(9) pouring a standard floor laminated slab cast-in-place concrete layer and node area core concrete, and maintaining to a design age;
(10) repeating (4) - (9) until the top layer;
(11) temporarily supporting and fixing the prefabricated reinforced concrete beam at the elevation of the top of the lower column at the top layer;
(12) repeating (5) - (6);
(13) laying a bottom plate of the prefabricated reinforced concrete laminated slab, and sealing the splicing seams of the laminated slab; or directly arranging a top floor formwork project and a reinforcing steel bar laying project under the condition of adopting the cast-in-place integral top floor;
(14) and pouring a top floor laminated slab cast-in-place concrete layer and node area core concrete, maintaining to a design age, and directly pouring a top floor concrete project under the condition that the cast-in-place integral top floor is adopted.
Compared with the prior art, the assembling type reinforced concrete framework disassembly-free formwork combination connecting system and the construction method thereof have the following advantages:
(1) the application adopts the on-site formwork-dismantling-free technology, reduces the workload of general on-site formwork engineering, and simultaneously adopts high-performance engineering materials to reinforce the bearing performance of the wet-process connection area of the post-cast joint.
(2) The ultra-high performance concrete (UHPC) with excellent mechanical property is adopted as a base material of the disassembly-free formwork, and the UHPC has excellent mechanical property, so that the disassembly-free formwork can realize thin plate design and realize the characteristics of light weight and high strength.
(3) The disassembly-free formwork disclosed by the invention is formed by adopting the UHPC plates in the node area, so that the shearing resistance of the material can be fully exerted, and the bending shear bearing performance and the ductility energy consumption capability of the common reinforced concrete wet method connection node area are enhanced.
(4) The prefabricated reinforced concrete column and the reinforced concrete beam are temporarily supported and fixed in a traditional construction mode, the existing construction procedures are not changed, and the site construction is convenient.
(5) The disassembly-free formwork is connected by adopting connecting pieces such as bolts and the like, so that the construction is convenient, the welding is avoided, and the connection quality is ensured.
(6) The core concrete in the disassembly-free formwork and the post-cast concrete layer (or cast-in-place integral floor concrete project) of the composite slab are cast together, secondary casting is avoided, construction is convenient, integral casting is achieved, the integral performance is excellent, and the mechanical performance of the composite slab under stress is fully guaranteed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a disassembly-free formwork combination connection system of an assembled reinforced concrete framework according to an embodiment of the present invention;
FIG. 2 is a schematic view of a connection node between a prefabricated column at a midspan and an adjacent prefabricated beam according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a king post node;
FIG. 4 is a schematic view of a connection node between a precast column at an edge span and an adjacent precast beam according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a side pillar node;
fig. 6 is a schematic view of a connection node between a prefabricated column at an angular point and an adjacent prefabricated beam according to the embodiment of the invention;
FIG. 7 is a schematic structural view of a corner post joint;
FIG. 8 is a schematic view of an angled configuration of the connector side plate;
FIG. 9 is a schematic view of a second angular configuration of the connector side plate;
FIG. 10 is a third angled view through the connector side plate;
FIG. 11 is a fourth angular configuration of a side plate of the cross connector;
FIG. 12 is a schematic view of the connector securing the side plates at an angle;
FIG. 13 is a schematic view of another angle of the attachment member securing the side plates;
FIG. 14 is a schematic view of a still further angle of the attachment member securing the side plates;
FIG. 15 is a schematic view of the assembly of the side plate of the through connector and the side plate of the fixed connector;
FIG. 16 is a schematic view of the connection converting member;
FIG. 17 is a schematic structural view of an end anchor connection;
figure 18 is a schematic structural view of the upper end of a precast reinforced concrete column;
figure 19 is a schematic structural view of the lower end of a precast reinforced concrete column;
fig. 20 is a schematic structural view of a precast reinforced concrete beam.
Description of reference numerals:
1-corner post node, 2-side post node, 3-center post node, 4-precast reinforced concrete post, 4-1-precast reinforced concrete post upper end, 4-2-precast reinforced concrete post lower end, 5-precast reinforced concrete beam, 6-precast reinforced concrete composite slab bottom plate, 7-temporary support, 8-precast reinforced concrete composite slab bottom plate splice joint, 9-center post beam end through connector side plate, 10-through connector side plate preformed hole, 11-first connection conversion member, 12-horizontal bottom fixed plate section, 13-inclined plate section, 14-horizontal upper fixed plate section, 15-horizontal bottom fixed plate section preformed hole, 16-horizontal upper fixed plate section preformed hole, 17-bottom force transmission fixed nut, 18-end anchor connector, 19-screw rod, 20-fixing nuts, 21-spacers, 22-end anchor plates, 23-connectors, 24-end nuts, 25-center pillar beam-end fixing side plates, 26-small diameter steel pipes, 27-first shear grooves, 28-first reinforcement cages, 29-first embedded parts, 30-raised shear key grooves, 31-large diameter steel pipes, 32-second connection conversion parts, 33-center pillar beam-end penetrating connector side plates, 34-center pillar beam-end fixing side plates, 35-side pillar beam-end penetrating connector side plates, 36-side pillar beam-end fixing side plates, 37-side pillar beam-end penetrating connector side plates, 38-side pillar beam-end fixing side plates, 39-corner pillar beam-end penetrating connector side plates, 40-corner pillar beam-end fixing side plates, 41-corner pillar beam-end penetrating connector side plates, 42-corner pillar beam-end fixing side plates, 43-second shear resistant groove, 44-second steel bar cage, 45-second embedded part.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1-20, a fabricated reinforced-bar concrete frame disassembly-free formwork combined connection system comprises a plurality of prefabricated reinforced-bar concrete beams 5 and a plurality of prefabricated reinforced-bar concrete columns 4, wherein two adjacent prefabricated reinforced-bar concrete columns 4 are connected and fixed through embedded steel pipes;
the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete beam at the midspan position are connected with four adjacent prefabricated reinforced concrete beams through a center column node 3, and the four adjacent prefabricated reinforced concrete beams form a cross structure; the upper prefabricated reinforced concrete columns and the lower prefabricated reinforced concrete beams at the side spans are connected with each other through side column nodes 2, and the three adjacent prefabricated reinforced concrete beams form a T-shaped structure; the prefabricated reinforced concrete columns which are adjacent up and down at the corner points are connected with the two adjacent prefabricated reinforced concrete beams through corner column joints 1, and the two adjacent prefabricated reinforced concrete beams form an L-shaped structure; precast reinforced concrete beam 5 is fixed in lower floor's precast reinforced concrete post or lower floor's floor through interim the support, upper strata precast reinforced concrete post also supports fixed bearing on precast reinforced concrete beam 5 through interim the support, every node all includes a plurality of connecting piece curb plates and the fixed curb plate of connecting piece of wearing, one wears the cooperation of connecting piece curb plate and the fixed curb plate of connecting piece and uses, it has a plurality of connecting piece curb plate preformed holes 10 that wear that are used for on-the-spot to alternate 23 usefulness of connecting piece to wear to be equipped with on every connecting piece curb plate, connecting piece 23 is installed on wearing the connection curb plate through first connection converting part 11, it is corresponding, be equipped with on the fixed curb plate of connecting piece and connect converting part 32 with connecting piece 23 complex second.
In fig. 1, the prefabricated reinforced concrete composite slab bottom plate 6 and the prefabricated reinforced concrete composite slab bottom plate splicing seam 8 adopt a composite slab form for a floor structure, the temporary support 7 is a simple auxiliary example for explaining the problem, and the type of the temporary support specifically adopted in the engineering is out of the range related to the invention.
The first connection conversion part 11 and the second connection conversion part 32 have the same structure and respectively comprise two horizontal bottom fixing plate sections 12, two inclined plate sections 13, a horizontal upper fixing plate section 14, a bottom force transmission fixing nut 17 and an end anchor connecting part 18, wherein two ends of the horizontal upper fixing plate section 14 are respectively connected with one horizontal bottom fixing plate section 12 through one inclined plate section 13, and the bottom force transmission fixing nut 17 is arranged at the bottom of the horizontal upper fixing plate section 14;
the end anchor connecting piece 18 comprises a screw rod 19, a fixing nut 20, a cushion block 21 and an end anchor plate 22, a horizontal bottom fixing plate section preformed hole 15 used for penetrating the screw rod 19 is formed in the horizontal bottom fixing plate section 12, a horizontal upper fixing plate section preformed hole 16 used for penetrating the connecting piece 23 is formed in the horizontal upper fixing plate section 14, the screw rod 19 is fixed on the end anchor plate 22 through the cushion block 21, the end anchor plate is fixed on a corresponding side plate, the screw rod 19 penetrates through the horizontal bottom fixing plate section preformed hole 15 and then is connected with the fixing nut 20, and the connecting piece 23 penetrates through a bottom force transmission fixing nut of the first connecting conversion piece and a horizontal upper fixing plate section preformed hole in sequence and then extends into a horizontal upper fixing plate section preformed hole of the second connecting conversion piece and is connected with a bottom force transmission fixing nut of the second connecting conversion piece.
The center pillar node 3 includes that two center pillar post ends wear the connecting piece curb plate 33, two center pillar post end fixed curb plates 34, four center pillar beam ends wear connecting piece curb plate 9 and four center pillar beam ends fixed curb plate 25, a center pillar post end is worn connecting piece curb plate 33 and a center pillar post end fixed curb plate 34 and is constituted a set of and just to arranging, a center pillar beam end is worn connecting piece curb plate 9 and a center pillar beam ends fixed curb plate 25 and is constituted a set of and just to arranging, it all is fixed in on the corresponding fixed curb plate through connecting piece 23 and with end nut 24 to wear the connecting piece curb plate.
One of the side column end fixed side plates of the side column node 2 and the two adjacent side column end fixed side plates are integrally formed.
The corner post end fixed side plate of the corner post node 1 and the adjacent corner post end fixed side plate are integrally formed.
The prefabricated reinforced concrete column 4 comprises a prefabricated reinforced concrete column upper end 4-1 and a prefabricated reinforced concrete column lower end 4-2, the prefabricated reinforced concrete column upper end 4-1 is provided with a first shear-resistant groove 27, and a small-diameter steel pipe 26 for supporting and positioning an upper-layer column is embedded in the groove; the lower end 4-2 of the prefabricated reinforced concrete column is provided with a raised shear key slot 30, a hollow large-diameter steel pipe 31 which is used for being sleeved outside the small-diameter steel pipe 26 is embedded in the prefabricated reinforced concrete column, and the large-diameter steel pipe 31 is used for supporting and positioning the prefabricated reinforced concrete column on the upper layer; respectively placing a first reinforced concrete cage 28 in the upper end 4-1 of the prefabricated reinforced concrete column and the lower end 4-2 of the prefabricated reinforced concrete column, and arranging first embedded parts 29 which are used for being connected with the corresponding temporary supports 7 on the outer surfaces of the first reinforced concrete cage and the prefabricated reinforced concrete column;
the both ends of precast reinforced concrete roof beam 5 are equipped with second anti-shear groove 43 respectively, place second reinforced concrete cage 44 in precast reinforced concrete roof beam 5's inside, set up second built-in fitting 45 on precast reinforced concrete roof beam 5's surface, second built-in fitting 45 is used for linking to each other with corresponding interim support 7 and fixes upper precast reinforced concrete post.
The connecting piece 23 is a bolt, a screw rod or a steel bar, the end nut 24 is a fixed nut at the end part of the connecting piece 23, and the end nut 24 is used for screwing the connecting piece 23. The outer diameter of the small-diameter steel pipe 26 and the inner diameter of the large-diameter steel pipe 31 meet the requirement of assembly clearance error.
This application is through corner post node, side column node and center pillar node for realize the regional connection of prefabricated reinforced concrete column of reinforced concrete assembled frame structure, the node of prefabricated reinforced concrete roof beam. During assembly construction, after the beam-grouting joints are connected, concrete in the joint disassembly-free formwork is poured together with the post-cast layer of the laminated floor slab to form a whole. The disassembly-free formwork adopts ultra-high performance concrete with excellent mechanical property as a base material of the disassembly-free formwork and has excellent mechanical property, so that the disassembly-free formwork realizes sheet design and has the characteristics of light weight and high strength. The disassembly-free formwork gives full play to the shearing resistance of the high-performance engineering material, and strengthens the bending shear bearing performance and the ductility energy consumption capability of the common reinforced concrete wet method connection node area.
A construction method of an assembly type reinforced concrete frame disassembly-free formwork combined connection system specifically comprises the following steps:
(1) in a factory, prefabricating a connecting piece side plate and a connecting piece fixing side plate of a disassembly-free formwork by using ultra-high performance concrete, and prefabricating a reinforced concrete beam and a reinforced concrete column by using common concrete;
(2) on the construction site, according to the distribution of the building plane, firstly, temporarily supporting and fixing a first-layer prefabricated reinforced concrete column, and embedding reserved steel bars of the first-layer prefabricated reinforced concrete column and a steel bar project of a bottom foundation connecting beam or a bottom floor system according to the design requirement;
(3) pouring a bottom foundation coupling beam or a bottom integral-pouring floor concrete project, and maintaining to a design age;
(4) hoisting and positioning the prefabricated reinforced concrete beam, and fixing the prefabricated reinforced concrete beam by adopting temporary support;
(5) selecting matched disassembly-free formwork combination side column nodes, middle column nodes and corner column nodes, and fixing the side plates penetrating the connecting pieces to corresponding fixed side plates by using connecting pieces 23 and end nuts 24;
(6) installing a bottom die of a reinforced concrete beam node area, wherein the bottom die adopts a traditional steel combined template, a wood template or a plastic template;
(7) laying a bottom plate of the prefabricated reinforced concrete laminated slab, and sealing the splicing seams of the laminated slab;
(8) according to the distribution of a building plane, fixing the layer of prefabricated reinforced concrete columns by adopting temporary supports, and embedding reserved steel bars of the layer of prefabricated reinforced concrete columns and the floor slab in advance according to design requirements;
(9) pouring a standard floor laminated slab cast-in-place concrete layer and node area core concrete, and maintaining to a design age;
(10) repeating (4) - (9) until the top layer;
(11) temporarily supporting and fixing the prefabricated reinforced concrete beam at the elevation of the top of the lower column at the top layer;
(12) repeating (5) - (6);
(13) laying a bottom plate of the prefabricated reinforced concrete laminated slab, and sealing the splicing seams of the laminated slab; or directly arranging a top floor formwork project and a reinforcing steel bar laying project under the condition of adopting the cast-in-place integral top floor;
(14) and pouring a top floor laminated slab cast-in-place concrete layer and node area core concrete, maintaining to a design age, and directly pouring a top floor concrete project under the condition that the cast-in-place integral top floor is adopted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides an assembled reinforced concrete frame exempts from to tear open mould shell built-up connection system which characterized in that: the prefabricated reinforced concrete beam comprises a plurality of prefabricated reinforced concrete beams (5) and a plurality of prefabricated reinforced concrete columns (4), wherein two adjacent prefabricated reinforced concrete columns (4) are connected and fixed through embedded steel pipes;
the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete column which are adjacent at the midspan are connected with four adjacent prefabricated reinforced concrete beams through center column nodes (3), and the four adjacent prefabricated reinforced concrete beams form a cross structure; the upper prefabricated reinforced concrete column and the lower prefabricated reinforced concrete beam at the side span are connected with the three adjacent prefabricated reinforced concrete beams through side column joints (2), and the three adjacent prefabricated reinforced concrete beams form a T-shaped structure; the prefabricated reinforced concrete columns which are adjacent up and down at the corner points are connected with the two adjacent prefabricated reinforced concrete beams through corner column joints (1), and the two adjacent prefabricated reinforced concrete beams form an L-shaped structure; precast reinforced concrete beam (5) are fixed in lower floor's precast reinforced concrete post or lower floor's floor through interim the support, upper precast reinforced concrete post also supports fixed bearing on precast reinforced concrete beam (5) through interim the support, every node all includes a plurality of connecting piece curb plates and the fixed curb plate of connecting piece of wearing, one wears the cooperation of connecting piece curb plate and the fixed curb plate of connecting piece and uses, it has a plurality of connecting piece curb plate preformed holes (10) of wearing that are used for on-the-spot interlude connecting piece (23) usefulness to wear to be equipped with on every connecting piece curb plate, connecting piece (23) are installed on wearing the connecting curb plate through first connection converting part (11), it is corresponding, be equipped with on the connecting piece fixed curb plate and connect converting part (32) with connecting piece (23.
2. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 1, which is characterized in that: the first connection conversion part (11) and the second connection conversion part (32) are identical in structure and respectively comprise two horizontal bottom fixing plate sections (12), two inclined plate sections (13), a horizontal upper fixing plate section (14), a bottom force transmission fixing nut (17) and an end anchor connecting piece (18), two ends of the horizontal upper fixing plate section (14) are respectively connected with the horizontal bottom fixing plate section (12) through the inclined plate section (13), and the bottom force transmission fixing nut (17) is arranged at the bottom of the horizontal upper fixing plate section (14);
the end anchor connecting piece (18) comprises a screw rod (19), a fixing nut (20), a cushion block (21) and an end anchor plate (22), the horizontal bottom fixing plate section preformed hole (15) used for inserting the screw (19) is formed in the horizontal bottom fixing plate section (12), the horizontal upper fixing plate section preformed hole (16) used for inserting the connecting piece (23) is formed in the horizontal upper fixing plate section (14), the screw (19) is fixed on the end anchor plate (22) through a cushion block (21), the end anchor plate is fixed on a corresponding side plate, the screw (19) penetrates through the horizontal bottom fixing plate section preformed hole (15) and then is connected with the fixing nut (20), and the connecting piece (23) penetrates through the bottom force transmission fixing nut of the first connecting conversion piece and the horizontal upper fixing plate section preformed hole in sequence and then extends into the horizontal upper fixing plate section preformed hole of the second connecting conversion piece and is connected with the bottom force transmission fixing nut of the second connecting conversion piece.
3. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 1, which is characterized in that: center pillar node (3) are including two center pillar post ends wear connecting piece curb plate (33), two center pillar post ends fixed curb plate (34), four center pillar beam ends wear connecting piece curb plate (9) and four center pillar beam ends fixed curb plate (25), a center pillar post end is worn connecting piece curb plate (33) and a center pillar post end fixed curb plate (34) and is constituted a set ofly and just to arranging, a center pillar beam end is worn connecting piece curb plate (9) and a center pillar beam ends fixed curb plate (25) and is constituted a set ofly and just to arranging, it all is fixed in on the corresponding fixed curb plate with end nut (24) through connecting piece (23) to wear the connecting piece curb plate.
4. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 1, which is characterized in that: side column node (2) including two side column end wear connecting piece curb plate (35), two side column end fixed curb plate (36), connecting piece curb plate (37) and three side column beam-ends fixed curb plate (38) are worn to three side column beam-ends, connecting piece curb plate (35) and a side column end fixed curb plate (36) are worn to a side column end constitute a set ofly and just to arranging, a side column beam-end wears connecting piece curb plate (37) and a side column beam-ends fixed curb plate (38) constitute a set ofly and just to arranging, it all is fixed in on the corresponding fixed curb plate through connecting piece (23) and with end nut (24) to wear the connecting piece curb plate.
5. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 1, which is characterized in that: corner post node (1) includes that two corner post end wear connecting piece curb plate (39), two fixed curb plates of corner post end (40), connecting piece curb plate (41) and two fixed curb plates of corner post beam-ends (42) are worn to two corner post beam-ends, connecting piece curb plate (39) and fixed curb plate of a corner post end (40) are worn to a corner post end constitute a set ofly and just to arranging, connecting piece curb plate (41) and fixed curb plate of a corner post beam-ends (42) are worn to a corner post beam-ends constitute a set ofly and just to arranging, it all is fixed in on the corresponding fixed curb plate through a plurality of connecting pieces (23) and with end nut (24) to wear the connecting piece curb plate.
6. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 4, wherein: one of the side column end fixed side plate of the side column node (2) and the two adjacent side column end fixed side plates are integrally formed.
7. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 5, wherein: the corner post end fixing side plate of the corner post node (1) and the adjacent corner post end fixing side plate are integrally formed.
8. The assembly type reinforced concrete frame disassembly-free formwork combination connection system of claim 1, which is characterized in that: the prefabricated reinforced concrete column (4) comprises a prefabricated reinforced concrete column upper end (4-1) and a prefabricated reinforced concrete column lower end (4-2), a first anti-shearing groove (27) is reserved at the prefabricated reinforced concrete column upper end (4-1), and a small-diameter steel pipe (26) for supporting and positioning an upper-layer column is embedded in the prefabricated reinforced concrete column upper end; the lower end (4-2) of the prefabricated reinforced concrete column is provided with a raised shear key slot (30), a hollow large-diameter steel pipe (31) which is embedded and used for being sleeved outside the small-diameter steel pipe (26) is embedded, and the large-diameter steel pipe (31) is used for supporting and positioning the upper-layer prefabricated reinforced concrete column; a first reinforced concrete cage (28) is respectively arranged at the inner part of the upper end (4-1) of the prefabricated reinforced concrete column and the lower end (4-2) of the prefabricated reinforced concrete column, and the outer surfaces of the first reinforced concrete cage and the prefabricated reinforced concrete column are respectively provided with a first embedded part (29) which is used for being connected with a corresponding temporary support (7);
the both ends of precast reinforced concrete roof beam (5) are equipped with second anti-shear groove (43) respectively, place second reinforced concrete cage (44) in the inside of precast reinforced concrete roof beam (5), set up second built-in fitting (45) on the surface of precast reinforced concrete roof beam (5), second built-in fitting (45) are used for linking to each other with corresponding interim support (7) and fix upper precast reinforced concrete post.
9. The assembly type reinforced concrete frame disassembly-free formwork combination connecting system of claim 3, 4 or 5, wherein: the connecting piece (23) is a bolt, a screw rod or a steel bar, the end nut (24) is a fixed nut at the end part of the connecting piece (23), and the end nut (24) is used for screwing the connecting piece (23).
10. A construction method of an assembly type reinforced concrete frame disassembly-free formwork combination connection system according to any one of claims 1 to 8, characterized in that: the method specifically comprises the following steps:
(1) in a factory, prefabricating a connecting piece side plate and a connecting piece fixing side plate of a disassembly-free formwork by using ultra-high performance concrete, and prefabricating a reinforced concrete beam and a reinforced concrete column by using common concrete;
(2) on the construction site, according to the distribution of the building plane, firstly, temporarily supporting and fixing a first-layer prefabricated reinforced concrete column, and embedding reserved steel bars of the first-layer prefabricated reinforced concrete column and a steel bar project of a bottom foundation connecting beam or a bottom floor system according to the design requirement;
(3) pouring a bottom foundation coupling beam or a bottom integral-pouring floor concrete project, and maintaining to a design age;
(4) hoisting and positioning the prefabricated reinforced concrete beam, and fixing the prefabricated reinforced concrete beam by adopting temporary support;
(5) selecting matched disassembly-free formwork combination side column nodes, middle column nodes and corner column nodes, and fixing the side plates penetrating the connecting pieces to corresponding fixed side plates by using connecting pieces (23) and end nuts (24);
(6) installing a bottom die of a reinforced concrete beam node area, wherein the bottom die adopts a traditional steel combined template, a wood template or a plastic template;
(7) laying a bottom plate of the prefabricated reinforced concrete laminated slab, and sealing the splicing seams of the laminated slab;
(8) according to the distribution of a building plane, fixing the layer of prefabricated reinforced concrete columns by adopting temporary supports, and embedding reserved steel bars of the layer of prefabricated reinforced concrete columns and the floor slab in advance according to design requirements;
(9) pouring a standard floor laminated slab cast-in-place concrete layer and node area core concrete, and maintaining to a design age;
(10) repeating (4) - (9) until the top layer;
(11) temporarily supporting and fixing the prefabricated reinforced concrete beam at the elevation of the top of the lower column at the top layer;
(12) repeating (5) - (6);
(13) laying a bottom plate of the prefabricated reinforced concrete laminated slab, and sealing the splicing seams of the laminated slab; or directly arranging a top floor formwork project and a reinforcing steel bar laying project under the condition of adopting the cast-in-place integral top floor;
(14) and pouring a top floor laminated slab cast-in-place concrete layer and node area core concrete, maintaining to a design age, and directly pouring a top floor concrete project under the condition that the cast-in-place integral top floor is adopted.
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