CN117286948A - Concrete prefabricated part connection structure based on spiral ribs and construction method - Google Patents
Concrete prefabricated part connection structure based on spiral ribs and construction method Download PDFInfo
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- CN117286948A CN117286948A CN202311312735.3A CN202311312735A CN117286948A CN 117286948 A CN117286948 A CN 117286948A CN 202311312735 A CN202311312735 A CN 202311312735A CN 117286948 A CN117286948 A CN 117286948A
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- 239000004567 concrete Substances 0.000 title claims abstract description 63
- 238000010276 construction Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 53
- 239000010959 steel Substances 0.000 claims abstract description 53
- 238000009434 installation Methods 0.000 claims abstract description 21
- 239000011148 porous material Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 claims description 27
- 230000002787 reinforcement Effects 0.000 claims description 27
- 230000000149 penetrating effect Effects 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 230000002265 prevention Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 3
- 238000012423 maintenance Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 6
- 239000011178 precast concrete Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000011295 pitch Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
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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
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
- E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod
-
- 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
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention provides a concrete prefabricated part connection structure based on spiral ribs and a construction method, comprising a concrete prefabricated part, a spiral pore canal reserved in the prefabricated part, longitudinal stress steel bars in the prefabricated part, stirrups in the prefabricated part, spiral ribs, connection surfaces, installation gaps and post-pouring high-strength shrinkage-free grouting material, wherein the concrete prefabricated part can be any prefabricated part manufactured by concrete; the spiral pore canal reserved in the prefabricated part is used for inserting the spiral rib for connection; the longitudinal stress steel bars inside the prefabricated part are enveloped by the spiral pore canal; the stirrups in the prefabricated part are arranged around the longitudinal stress steel bars in the prefabricated part; the spiral ribs are used for connecting the prefabricated parts; the connecting surface and the mounting gap refer to a surface which is finally bonded together by high-strength shrinkage-free grouting materials between adjacent components and a gap which exists objectively after the actual mounting is finished; the invention improves the site construction efficiency of the concrete prefabricated part.
Description
Technical Field
The invention belongs to the field of construction of assembled concrete prefabricated parts, and particularly relates to a concrete prefabricated part connection structure based on spiral ribs and a construction method.
Background
The connection mode of the prefabricated concrete components is a key technology of the prefabricated building, determines the safety and economy of the whole structure, and the traditional node connection mode is mainly divided into dry connection and wet connection. The dry connection, namely the connection mode of dry operation, means that concrete is not required to be poured on a construction site, all prefabricated components, embedded parts and connecting parts are prefabricated in factories, and connection is realized through bolts or welding and other modes. Wet joining, i.e. the manner of joining by wet work, means that the prefabricated components of the factory are assembled by splicing in the field and concrete is poured behind the joint area, so that an integral structure is formed.
Up to now, the connection forms of precast concrete structures are various, and no better unified summary exists, and the different specifications also lead to the different classification of the various connection forms, which is not beneficial to the deep research of the connection modes of researchers. Meanwhile, various materials are applied to a construction site due to complex connection types, so that the management difficulty and the construction cost of site construction are increased. The dry connection technology has the advantages of convenient and quick construction, but has higher requirements on the construction technology, poor durability of the node and needs to pay attention to later maintenance. The wet connection technology has the advantages that the performance of the wet connection technology is basically similar to that of the cast-in-place concrete node, the wet connection technology has good shock resistance, safety and reliability, but the node construction is complex, and meanwhile, the wet connection technology does not conform to the environment-friendly construction concept of energy conservation and environmental protection. Therefore, the invention discloses a concrete prefabricated part connecting structure based on spiral ribs and a construction method, which can effectively solve the connection between various prefabricated parts, improve the field installation efficiency of the prefabricated parts, and have practical significance and good application prospect.
Disclosure of Invention
The invention aims to provide a concrete prefabricated part connecting structure based on spiral ribs and a construction method, and aims to solve the problems in the prior art. In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a concrete prefabricated part connection structure based on spiral muscle, includes concrete prefabricated part, the heliciform pore canal of reserving in the prefabricated part, the inside longitudinal stress reinforcing bar of prefabricated part, prefabricated part inside stirrup, spiral muscle, junction surface, installation clearance and post-filling high strength do not have shrinkage grouting material, and concrete prefabricated part can be any prefabricated part of concrete manufacturing; the spiral pore canal reserved in the prefabricated part is used for inserting the spiral rib for connection; the longitudinal stress steel bars inside the prefabricated part are enveloped by the spiral pore canal reserved in the prefabricated part; the stirrups in the prefabricated part are arranged around the longitudinal stress steel bars in the prefabricated part; the spiral ribs are used for connecting the prefabricated parts; the connecting surface and the mounting gap refer to the surface which is finally bonded together by high-strength shrinkage-free grouting materials between adjacent components and the gap which exists objectively after the actual mounting is finished.
Preferably, the prefabricated components can be prefabricated floors, prefabricated beams, prefabricated columns, prefabricated walls, prefabricated stairways, prefabricated balconies or prefabricated bay windows, the prefabricated components are formed by singly or in a mixed mode through one or more types of components, the prefabricated components can be two or more than two components, spiral reserved holes are formed in adjacent components or parts connected by structures, which are connected by the prefabricated components, no ribs are reserved in the spiral reserved holes, grouting exhaust holes are formed in the prefabricated components under special conditions, and the number, the positions and the sizes of the grouting exhaust holes are determined according to the installation positions of the connected components.
Preferably, the prefabricated component is further provided with a rib penetrating hole and a rib discharging hole, the opening surfaces of the rib penetrating hole and the rib discharging hole are arranged at two ends of the connecting surface, when the opening surfaces of the rib penetrating hole and the rib discharging hole are arranged on the opening surfaces of the spiral holes, the rib penetrating hole and the rib discharging hole are identical to the spiral holes, when the opening surfaces of the rib penetrating hole and the rib discharging hole are arranged on the vertical surfaces of the opening surfaces of the spiral holes, the rib penetrating hole and the rib discharging hole are aligned and led to the spiral holes, and the opening or the embedded special embedded part is enlarged by the rib penetrating hole and the rib discharging hole according to design requirements so as to anchor the inserted spiral rib end head.
Preferably, the preformed hole in the preform is provided in a top or side surface of the preform.
Preferably, the diameter of the spiral reserved pore canal in the prefabricated part is 2-4 times of that of the straight rib of the spiral rib.
Preferably, the inner spiral holes of the prefabricated parts are disconnected at the positions of the connecting surfaces and the mounting gaps of the connected prefabricated parts, the spiral holes of the connected adjacent prefabricated parts are the same spiral hole, the rotating directions are mutually connected in a three-dimensional space, the diameters are the same, the connecting surfaces are attached, and the mounting gaps are small. The spiral pore canal is 1/2 circular, 1/3 circular and 1/4 circular in axial horizontal projection, the spiral pore canal is circular after assembly and splicing are completed, the track radius of each spiral pore canal is the same, the screw pitches are equal, and the specific size is determined according to the design requirement.
Preferably, longitudinal stress steel bars in the prefabricated part are arranged on the inner side of a spiral pore canal reserved in the prefabricated part, and the specific model, number and size are determined by design.
Preferably, the stirrups in the prefabricated part are arranged around the longitudinal stressed steel bars in the prefabricated part, and the specific model, number and size are determined by design.
Preferably, the spiral rib is penetrated after a preformed hole in the prefabricated part is temporarily positioned, a starting point for penetrating after the preformed hole in the prefabricated part is arranged at the end part of the prefabricated part or at the side edge of the prefabricated part, the end point of the preformed hole in the prefabricated part is positioned at the other end of a spiral duct reserved in the prefabricated part, the penetrating of the duct is completed by means of a certain tool, the spiral rib is tensioned from two ends by means of manpower, machinery and the like after the penetrating, the spiral rib is prevented from being folded and loosened in the duct, the end of the spiral rib after the tensioning is reinforced with anchoring force in the modes of a hook, an anchoring head, knotting and the like, and the specific mode is determined by the design scheme.
Preferably, the type of the spiral bar is a primary, secondary and tertiary steel bar, a high-strength steel wire, a steel strand or a steel wire rope which are commonly used in the current engineering, and the diameter of the steel bar, the radius of the spiral track and the pitch of the spiral bar are determined by design.
Preferably, the connecting surface of the connecting structure refers to the surface of the adjacent components which are finally bonded together through high-strength shrinkage-free grouting materials, and the connecting surface is a rough surface, a shear key groove or a concrete smooth surface according to design requirements.
Preferably, the installation gaps of the connection structure, namely gaps existing between adjacent components after the actual installation is completed, are set according to design requirements, and can be arranged in a straight, oblique or stepped mode on the premise that spiral pore channels reserved in the prefabricated components are continuous, and are filled with high-strength shrinkage-free grouting materials after the installation is completed.
Preferably, the non-shrinkage high-strength grouting material is a powdery mixture, becomes a slurry with strong fluidity after being stirred by adding water, has a fluidity of not less than 260mm, has a compressive strength after hardening of not less than 50MPa, and is not shrunk from completion of grouting to formation of final strength.
Preferably, before the non-shrinkage grouting material is poured between the installation gap and the spiral rib and the reserved hole, the outer side of the installation gap is subjected to slurry leakage prevention blocking, so that the pouring space is of an integral communication structure, and an exhaust pipe or an exhaust hole is arranged at the highest point of the communication cavity, so that the whole pouring space is ensured to be filled densely through self-flowing of the grouting material.
Preferably, the connecting structure and the construction method of the invention are mixed with the existing connecting modes of the concrete prefabricated components such as sleeve grouting, bolt connection, welding and the like, and the combined connecting structure and the construction method are required to meet the design stress performance requirement.
The invention has the beneficial effects that: the connection is safe and reliable, various components can be simultaneously connected through the spiral steel bars, and the integrity and safety of the structure are enhanced; the production is convenient, the end part of the prefabricated part is not provided with ribs, a grouting sleeve or other steel structure embedded parts are not required to be embedded in the prefabricated part, the mold is simple in form, and the production is convenient; the construction is rapid, the nodes do not have the traditional cast-in-situ, the labor is less in the site, meanwhile, the steel bars are not required to be reserved in the installation process of the prefabricated parts, the steel bars are not leaked to collide with the prefabricated parts, and the construction efficiency of the connection between the prefabricated parts is effectively improved; the grouting device has the advantages that the grouting device is controllable in quality, the filling degree of grouting can be directly observed through the installation gap, other modes such as an endoscope are not needed, and grouting construction efficiency and quality are effectively improved.
Drawings
FIG. 1 is a schematic view of the up-down connection of a concrete prefabricated wall according to the present invention;
FIG. 2 is a schematic illustration of the connection of upper and lower precast concrete walls and precast beams in the present invention;
FIG. 3 is a schematic view of the connection of a concrete precast wall and a precast beam according to the present invention;
FIG. 4 is a schematic view of the connection of upper and lower precast concrete walls and precast floor slabs in the present invention;
FIG. 5 is a schematic view of the connection of a precast concrete wall and a precast floor plank in the present invention;
FIG. 6 is a schematic diagram of the left-right connection of a concrete precast floor slab in the present invention;
FIG. 7 is a schematic view of the left and right connection of the precast concrete wall according to the present invention;
FIG. 8 is a schematic view of the left and right connection of a concrete precast column in the present invention;
FIG. 9 is a schematic view of the left and right connection of a concrete precast beam according to the present invention;
FIG. 10 is a schematic view of the connection of a concrete prefabricated wall to a prefabricated column in accordance with the present invention;
FIG. 11 is a schematic view of a concrete precast column assembly connection in accordance with the present invention;
FIG. 12 is a schematic view of a concrete precast beam assembly connection in accordance with the present invention;
FIG. 13 is a schematic view of the connection of a prefabricated staircase to a prefabricated beam in accordance with the present invention;
FIG. 14 is a schematic view of the modular prefabricated housing component connection of the present invention;
FIG. 15 is a schematic view of a modular prefabricated box component of the present invention;
fig. 16 is a schematic view of a modular prefabricated framing member in accordance with the present invention.
Wherein, each reference sign in the figure:
1. spiral ribs; 2. longitudinal steel bars; 3. a stress stirrup; 4. a spiral duct; 5. an exhaust hole; 6. a connection gap; 7. a prefabricated wall is arranged on the upper wall; 8. a lower prefabricated wall; 9. prefabricating a beam; 10. prefabricating a floor slab; 11. a left prefabricated floor slab; 12. right prefabricated floor slab; 13. a left prefabricated wall; 14. a right prefabricated wall; 15. a left prefabricated column; 16. a right prefabricated column; 17. a left precast beam; 18. a right precast beam; 19. prefabricating a column; 20. prefabricating a wall; 21. prefabricating a column A; 22. prefabricating a column B; 23. prefabricating a column C; 24. prefabricating a column D; 25. prefabricating a beam A; 26. a precast beam B; 27. a precast beam C; 28. a precast beam D; 29. prefabricating stairs; 30. prefabricating a beam; 31. prefabricating a box body.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Referring to fig. 1, an embodiment of the invention provides a concrete prefabricated wall up-down connection structure based on a spiral rib 1 and a construction method thereof, wherein the spiral rib 1 is used for connecting an upper prefabricated wall 7 and a lower prefabricated wall 8, a connection gap 6 is arranged in the middle, a reserved spiral duct 4 is reserved in the prefabricated wall, a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the prefabricated wall, and an exhaust hole 5 is reserved at the top of the spiral duct 4. Referring to the drawings, the construction method of the connection structure is as follows: the upper prefabricated wall 7 and the lower prefabricated wall 8 are fixedly supported temporarily after being in place, the spiral ribs 1 are penetrated from the reserved spiral pore canal 4 and tensioned after fine adjustment and alignment, the spiral ribs 1 surround the longitudinal steel bars 2 inside each prefabricated part, the corresponding stressed stirrups 3 are arranged at the longitudinal steel bars 2, the periphery of the connecting gap 6 is tightly sealed after the fixing, a cavity is formed, then grouting is carried out, the grouting exhaust holes 5 are sealed after the grouting is completed, and the temporary support is removed after the maintenance is carried out until the design strength is reached.
Referring to fig. 2, the embodiment of the invention provides a connection structure and a construction method of an upper and a lower concrete precast walls and precast beams based on spiral ribs, wherein the upper precast wall 7 and the lower precast wall 8 are connected with the precast beams 9 by the spiral ribs 1, a connection gap 6 is reserved in the middle, a reserved spiral duct 4 is reserved in the precast walls and the precast beams 9, and longitudinal steel bars 2 and stress stirrups 3 are arranged in the connection sides of the precast components. Referring to the drawings, the construction method of the connection structure is as follows: the upper prefabricated wall 7 and the lower prefabricated wall 8 are fixed by temporary support after being in place, then the inner support frame body is arranged to place the prefabricated beams 9, the prefabricated walls are aligned with the prefabricated beams 9 in an adjusting mode, the spiral ribs 1 are penetrated from the spiral duct 4 and are tensioned, the spiral ribs 1 surround the longitudinal reinforcing steel bars 2 inside the prefabricated components, the corresponding stress stirrups 3 are arranged at the longitudinal reinforcing steel bars 2, the periphery of the connecting gap 6 is tightly sealed after being stabilized, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is achieved, and then the temporary support is removed.
Referring to fig. 3, the embodiment of the invention provides a connection structure and a construction method of a concrete prefabricated wall and a prefabricated beam based on spiral ribs, wherein an upper prefabricated wall 7 and a prefabricated beam 9 are connected by the spiral ribs 1, a connection gap 6 is formed between the upper prefabricated wall and the prefabricated beam 9, a reserved spiral pore channel 4 is reserved in the prefabricated wall and the prefabricated beam 9, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the prefabricated member. Referring to the drawings, the construction method of the connection structure is as follows: the prefabricated wall is erected and temporarily supported and fixed after being in place, then an inner support frame body is erected and is used for placing a prefabricated beam 9, after adjustment and alignment, a spiral rib 1 is penetrated from a spiral duct 4 and is tensioned, wherein the spiral rib 1 surrounds longitudinal steel bars 2 in each prefabricated part, corresponding stress stirrups 3 are arranged at the longitudinal steel bars 2, after the fixation, the periphery of a connecting gap 6 is tightly blocked, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is reached, and then the temporary support is removed.
Referring to fig. 4, the embodiment of the invention provides a connection structure and a construction method of an upper and a lower concrete precast walls and precast floor slabs based on spiral ribs, wherein an upper precast wall 7 and a lower precast wall 8 are connected with a precast floor slab 10 by using spiral ribs 1, a connection gap 6 is reserved in the middle, a reserved spiral duct 4 is reserved in the precast walls and precast floor slabs 10, and longitudinal steel bars 2 and stress stirrups 3 are arranged in the connection sides of the precast components. Referring to the drawings, the construction method of the connection structure is as follows: the upper prefabricated wall 7 and the lower prefabricated wall 8 are fixed by temporary support after being in place, then an inner support frame body is arranged for placing a prefabricated floor slab 10, the spiral reinforcement 1 is penetrated from the spiral duct 4 and tensioned after adjustment and alignment, wherein the spiral reinforcement 1 surrounds the longitudinal reinforcement 2 inside each prefabricated member, the corresponding stress stirrups 3 are arranged at the longitudinal reinforcement 2, the periphery of the connecting gap 6 is tightly sealed after being stabilized, a cavity is formed, then grouting is carried out, and finally, the temporary support is removed after the design strength is reached by curing.
Referring to fig. 5, the embodiment of the invention provides a connection structure and a construction method of a concrete prefabricated wall and a prefabricated floor slab based on spiral ribs, wherein a lower prefabricated wall 8 and a prefabricated floor slab 10 are connected by spiral ribs 1, a connection gap 6 is formed between the lower prefabricated wall 8 and the prefabricated floor slab 10, a reserved spiral duct 4 is reserved in the lower prefabricated wall 8 and the prefabricated floor slab 10, and longitudinal steel bars 1 and stress stirrups 3 are arranged in the connection sides of the prefabricated components. Referring to the drawings, the construction method of the connection structure is as follows: the lower prefabricated wall 8 is erected and temporarily supported and fixed after being in place, then an inner supporting frame body is erected and is used for placing a prefabricated floor slab 10, after adjustment and alignment, the spiral ribs 1 are penetrated from the spiral duct 4 and are tensioned, wherein the spiral ribs 1 surround the longitudinal reinforcing steel bars 1 in each prefabricated part, the corresponding stress stirrups 3 are arranged at the longitudinal reinforcing steel bars 1, the periphery of the connecting gap 6 is tightly blocked and compacted after being stabilized, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is reached, and then the temporary support is removed.
Referring to fig. 6, the embodiment of the invention provides a left-right connection structure and a construction method of a concrete precast floor slab based on spiral ribs, wherein a left precast floor slab 11 and a right precast floor slab 12 are connected by the spiral ribs 1, a connection gap 6 is arranged in the middle, a reserved spiral duct 4 is reserved in the precast floor slab, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the inside of the connection side of a precast member. Referring to the drawings, the construction method of the connection structure is as follows: the left precast floor slab 11 and the right precast floor slab 12 are hoisted in place, the spiral bars 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, wherein the spiral bars 1 surround the longitudinal steel bars 2 inside each precast member, the corresponding stressed stirrups 3 are arranged at the longitudinal steel bars 2, the periphery of the connecting gap 6 is tightly plugged after the fixation, a cavity is formed, then grouting is carried out, and finally, temporary support is removed after the maintenance is carried out until the design strength is reached.
Referring to fig. 7, the embodiment of the invention provides a left-right connection structure and a construction method of a concrete prefabricated wall based on spiral ribs 1, wherein a left prefabricated wall 13 and a right prefabricated wall 14 are connected by the spiral ribs 1, a connection gap 6 is formed in the middle of the left prefabricated wall and the right prefabricated wall, a reserved spiral duct 4 is reserved in the prefabricated wall, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the prefabricated component. Referring to the drawings, the construction method of the connection structure is as follows: the left prefabricated wall 13 and the right prefabricated wall 14 are lifted in place, then temporary supports are erected and fixed, the spiral ribs 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, the spiral ribs 1 surround the longitudinal steel bars 2 in each prefabricated part, the corresponding stress stirrups 3 are arranged at the longitudinal steel bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the connection gaps are stabilized, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is achieved, and then the temporary supports are removed.
Referring to fig. 8, the embodiment of the invention provides a left-right connection structure and a construction method of a concrete precast column based on spiral ribs, wherein a left precast column 15 and a right precast column 16 are connected by the spiral ribs 1, a connection gap 6 is arranged in the middle, a reserved spiral duct 4 is reserved in the precast column, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of a precast member. Referring to the drawings, the construction method of the connection structure is as follows: the left prefabricated column 15 and the right prefabricated column 16 are lifted in place, then temporary supports are erected and fixed, the spiral ribs 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, the spiral ribs 1 surround the longitudinal steel bars 2 in each prefabricated part, the corresponding stressed stirrups 3 are arranged at the longitudinal steel bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the connection gaps are stabilized, a cavity is formed, then grouting is carried out, and finally curing is carried out until the design strength is reached, and then the temporary supports are removed.
Referring to fig. 9, the embodiment of the invention provides a left-right connection structure and a construction method of a concrete precast beam based on spiral ribs, wherein a left precast beam 17 and a right precast beam 18 are connected by the spiral ribs 1, a connection gap 6 is arranged in the middle, a reserved spiral duct 4 is reserved in the precast beam, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the precast member. Referring to the drawings, the construction method of the connection structure is as follows: the left precast beam 17 and the right precast beam 18 are lifted in place, then temporary supports are erected and fixed, the spiral ribs 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, the spiral ribs 1 surround the longitudinal steel bars 2 in each precast member, the corresponding stressed stirrups 3 are arranged at the longitudinal steel bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the connection gaps are stabilized, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is reached, and then the temporary supports are removed.
Referring to fig. 10, the embodiment of the invention provides a connection structure and a construction method of a concrete prefabricated wall and a prefabricated column based on spiral ribs, wherein the prefabricated wall 20 and the prefabricated column 19 are connected by the spiral ribs 1, a connection gap 6 is arranged in the middle, a reserved spiral pore canal 4 is reserved in the prefabricated part, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the prefabricated part. Referring to the drawings, the construction method of the connection structure is as follows: the prefabricated wall 20 and the prefabricated column 19 are lifted in place, then temporary supports are erected and fixed, the spiral ribs 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, the spiral ribs 1 surround the longitudinal steel bars 2 in each prefabricated part, the corresponding stress stirrups 3 are arranged at the longitudinal steel bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the fixation, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is achieved, and then the temporary supports are removed.
Referring to fig. 11, an embodiment of the invention provides a concrete precast column combined connection structure based on spiral ribs and a construction method thereof, wherein a precast column a21, a precast column B22, a precast column C23 and a precast column D24 are connected by the spiral ribs 1, a connection gap 6 is formed in the middle, a reserved spiral duct 4 is reserved in the precast column, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of a precast member. Referring to the drawings, the construction method of the connection structure is as follows: the prefabricated column A21, the prefabricated column B22, the prefabricated column C23 and the prefabricated column D24 are lifted in place, then temporary supports are erected and fixed, the spiral ribs 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, wherein the spiral ribs 1 surround the longitudinal reinforcing steel bars 2 inside each prefabricated component, the corresponding stress stirrups 3 are arranged at the longitudinal reinforcing steel bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the fixing, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is reached, and then the temporary supports are removed.
Referring to fig. 12, an embodiment of the present invention provides a concrete precast beam combined connection structure based on spiral ribs and a construction method thereof, wherein a precast beam a25, a precast beam B26, a precast beam C27, and a precast beam D28 are connected by a spiral rib 1, a connection gap 6 is provided in the middle, a reserved spiral duct 4 is reserved in the precast beam, and a longitudinal steel bar 2 and a stress stirrup 3 are provided in the inside of the connection side of the precast member. Referring to the drawings, the construction method of the connection structure is as follows: the prefabricated beam A25, the prefabricated beam B26, the prefabricated beam C27 and the prefabricated beam D28 are lifted in place, then temporary supports are erected and fixed, the spiral bars 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, wherein the spiral bars 1 surround the longitudinal bars 2 inside each prefabricated part, the corresponding stress stirrups 3 are arranged at the longitudinal bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the fixing, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is reached, and then the temporary supports are removed.
Referring to fig. 13, the embodiment of the invention provides a connection structure and a construction method of a concrete prefabricated staircase and a prefabricated beam based on spiral ribs, wherein the prefabricated staircase 29 and the prefabricated beam 30 are connected by the spiral ribs 1, a connection gap 6 is arranged in the middle, a reserved spiral pore canal 4 is reserved in the prefabricated member, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the prefabricated member. Referring to the drawings, the construction method of the connection structure is as follows: the prefabricated stairway 29 and the prefabricated beam 30 are lifted in place, then temporary supports are erected and fixed, the spiral ribs 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, the spiral ribs 1 surround the longitudinal steel bars 2 in each prefabricated part, the corresponding stressed stirrups 3 are arranged at the longitudinal steel bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the fixing, a cavity is formed, then grouting is carried out, and finally maintenance is carried out until the design strength is achieved, and then the temporary supports are removed.
Referring to fig. 14-16, an embodiment of the present invention provides a connection structure and a construction method for a concrete prefabricated box 31 based on spiral ribs, wherein the prefabricated box 31 is connected by the spiral ribs 1, a connection gap 6 is provided in the middle, a reserved spiral duct 4 is reserved in the prefabricated member, and a longitudinal steel bar 2 and a stress stirrup 3 are arranged in the connection side of the prefabricated member. Referring to the drawings, the construction method of the connection structure is as follows: the prefabricated box body 31 is lifted in place, then temporary supports are erected, the spiral bars 1 are penetrated from the spiral duct 4 and tensioned after adjustment and alignment, the spiral bars 1 surround the longitudinal bars 2 inside each prefabricated part, the corresponding stress stirrups 3 are arranged at the longitudinal bars 2, the peripheries of the connecting gaps 6 are tightly plugged after the fixing, a cavity is formed, then grouting is carried out, and finally curing is carried out until the design strength is reached, and then the temporary supports are removed. The prefabricated box 31 may be a prefabricated frame structure, as shown in fig. 16.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (15)
1. The utility model provides a concrete prefabricated part connection structure based on spiral muscle, its characterized in that includes concrete prefabricated part, the heliciform pore canal of reserving in the prefabricated part, the inside longitudinal stress reinforcing bar of prefabricated part, prefabricated part inside stirrup, spiral muscle, junction surface, installation clearance and post-filling high strength do not have the shrink grouting material, the prefabricated part of concrete can be any prefabricated part of concrete manufacturing; the spiral pore canal reserved in the prefabricated part is used for penetrating the spiral rib for connection; the longitudinal stressed steel bars inside the prefabricated part are enveloped by the spiral pore canal reserved in the prefabricated part; the stirrups in the prefabricated part are arranged around longitudinal stress steel bars in the prefabricated part; the spiral ribs are used for connecting prefabricated components; the connecting surface and the installation gap refer to a surface which is finally bonded together through high-strength shrinkage-free grouting materials between adjacent components and a gap which objectively exists after the actual installation is completed.
2. The connection structure of the concrete prefabricated parts based on the spiral ribs according to claim 1, wherein the prefabricated parts can be prefabricated floors, prefabricated beams, prefabricated columns, prefabricated walls, prefabricated stairways, prefabricated balconies or prefabricated bay windows, the prefabricated parts are formed by singly or mixed combination of one or more types of parts, the prefabricated parts can be two or more parts, spiral reserved holes are formed in adjacent parts or parts connected by structures, and the spiral reserved holes are not reserved with the beard ribs.
3. The connection structure of a concrete precast element based on a spiral reinforcement according to claim 1, wherein the precast element is further provided with a reinforcement penetrating hole and a reinforcement discharging hole, the opening surfaces of the reinforcement penetrating hole and the reinforcement discharging hole are arranged at two ends of the connection surface, when the opening surfaces of the reinforcement penetrating hole and the reinforcement discharging hole are arranged on the opening surface of the spiral hole, the reinforcement penetrating hole and the reinforcement discharging hole are equal to the spiral hole, when the opening surfaces of the reinforcement penetrating hole and the reinforcement discharging hole are arranged on the surface perpendicular to the opening surface of the spiral hole, the reinforcement penetrating hole and the reinforcement discharging hole are aligned and led to the spiral hole, and the reinforcement penetrating hole and the reinforcement discharging hole enlarge an opening or pre-buried special embedded part according to design requirements so as to anchor the inserted spiral reinforcement end head.
4. A concrete precast element connecting structure based on a spiral rib according to claim 3, wherein the preformed hole in the precast element is provided on the top surface or the side surface of the precast element.
5. A concrete prefabricated member connection structure based on a spiral rib according to claim 3, wherein the diameter of the spiral reserved pore canal in the prefabricated member is 2-4 times of that of the straight rib of the spiral rib.
6. A concrete precast element connection structure based on a spiral rib according to claim 3, wherein the internal spiral holes of the precast elements are disconnected at the positions of the connection surface and the installation gap of the connected precast elements, the spiral holes of the connected adjacent precast elements are the same spiral hole, the rotation directions are mutually connected in a three-dimensional space, the diameters are the same, the connection surfaces are attached, and the installation gap is small. The spiral duct is 1/2 circular, 1/3 circular and 1/4 circular in axial horizontal projection, and is circular after assembly and splicing are completed, and the track radius of each spiral hole is the same, and the pitch is equal.
7. A concrete prefabricated member connection structure based on a spiral rib according to claim 3, wherein the longitudinal stress reinforcing bars inside the prefabricated member are disposed inside the spiral duct reserved in the prefabricated member.
8. The concrete prefabricated part connecting structure based on the spiral ribs according to claim 1, wherein the stirrups in the prefabricated parts are arranged around longitudinal stress steel bars in the prefabricated parts.
9. The concrete precast element connection structure based on the spiral rib according to claim 1, wherein the spiral rib is penetrated after being temporarily positioned along a preformed hole in the precast element, a starting point of the preformed hole penetrating after the preformed hole in the precast element is arranged at the end part of the precast element or the side edge of the precast element, a terminal point of the preformed hole in the precast element is positioned at the other end of a spiral duct reserved in the precast element, the duct penetrating is completed by means of a certain tool, the spiral rib is tensioned from two ends by adopting means of manpower, machinery and the like after the duct penetrating, the spiral rib is prevented from being folded and loosened in the duct, and the end of the spiral rib after tensioning is reinforced by adopting a hook, an anchoring head, a knotting and the like.
10. The concrete prefabricated member connecting structure based on the spiral reinforcement according to claim 9, wherein the type of the spiral reinforcement is a primary, secondary, tertiary reinforcement, high-strength steel wire, steel strand or steel wire rope commonly used in the current engineering, and the diameter of the reinforcement, the radius of the spiral track and the pitch are determined by design.
11. The connection structure of the concrete prefabricated parts based on the spiral ribs according to claim 10, wherein the connection surface of the connection structure refers to the surface of the adjacent parts which are finally bonded together through high-strength shrinkage-free grouting materials, and the connection surface is a napped rough surface, a shear key groove or a concrete smooth surface according to design requirements.
12. The method for constructing a concrete prefabricated member based on a spiral rib according to claim 1, wherein the installation gap of the connection structure is a gap between adjacent members after the actual installation is completed, and the installation gap can be in a straight, oblique or stepped arrangement on the premise of ensuring that spiral pore channels reserved in the prefabricated member are continuous, and is filled with high-strength shrinkage-free grouting material after the installation is completed.
13. The method for constructing a concrete prefabricated member based on a spiral reinforcement according to claim 1, wherein the non-shrinkage high-strength grouting material is a powdery mixture, becomes a slurry with very high fluidity after being stirred by adding water, has a fluidity of not less than 260mm, has a compressive strength after hardening of not less than 50MPa, and is not shrunk from completion of grouting to formation of final strength.
14. The construction method of a concrete prefabricated part based on a spiral reinforcement according to claim 13, wherein before the non-shrinkage grouting material is poured between the installation gap and the space between the spiral reinforcement and the reserved hole, the outer side of the installation gap is subjected to grouting leakage prevention and blocking, so that the pouring space is of an integral communication structure, and an exhaust pipe or an exhaust hole is arranged at the highest point of the communication cavity, so that the whole pouring space is tightly filled by self-flowing of the grouting material.
15. The method for constructing a concrete prefabricated member based on a spiral rib according to claim 14, wherein the connecting structure and the construction method are used in a mixed mode with the existing concrete prefabricated member connecting modes such as sleeve grouting, bolt connection and welding, and the design stress performance requirement is met after the connecting structure and the construction method are combined.
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