CN108301509B - Assembling method of reinforced concrete frame structure - Google Patents
Assembling method of reinforced concrete frame structure Download PDFInfo
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- CN108301509B CN108301509B CN201711475323.6A CN201711475323A CN108301509B CN 108301509 B CN108301509 B CN 108301509B CN 201711475323 A CN201711475323 A CN 201711475323A CN 108301509 B CN108301509 B CN 108301509B
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- reinforced concrete
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- main beam
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
Abstract
The invention provides an assembly method of a reinforced concrete frame, which is characterized in that a prefabricated part with required specification and model is manufactured in a factory; secondly, transporting the prefabricated parts with required specification and model manufactured in a factory to an installation site in batches; binding column reinforcing steel bars on the foundation column part of the ground structure, and building a reinforced concrete composite column; fourthly, arranging the prefabricated reinforced concrete support body at the upper end of the composite column; fifthly, aligning the main beam to the main beam assembling end of the prefabricated reinforced concrete support body to assemble a main beam; and sixthly, repeating the steps, and simply assembling and connecting the reinforced concrete frames.
Description
Technical Field
The invention relates to an assembly type building system technology, in particular to an assembly method of a reinforced concrete frame structure.
Background
In order to adjust the structure of the building industry, improve the building quality, accelerate the construction speed, realize energy conservation and environmental protection and reduce the construction cost, the nation proposes to widely popularize the assembly type building, and a specific implementation plan is made clear; the method is required to be widely applied to reinforced concrete frame structures, reinforced concrete frame shear wall structures, steel structures and steel-concrete combined structure systems, and the application fields and the assembled building structure systems in China are defined; however, the large-span reinforced concrete frame structure assembly type building is just started, and the technology of common composite floor slabs and double T-shaped slab floors is adopted, so that the construction cost is high, the ground is not aerated, and the development of the assembly type building industry is restricted.
For example, ZL200410082381.9 'an empty stomach little dense rib superstructure' of inventor, the hollow obturator buries and forms "T style of calligraphy" atress cross section hollow layer in cast-in-place superstructure, has solved the problem of large-span, large space, heavy load, has laid a foundation for assembled building floor.
In order to promote the industrialized development of houses in China, the ZL201620408935.8 passive building energy-saving integrated system applied by the inventor expands the cast-in-place concrete hollow floor system to the field of fabricated buildings by creating transformation, and solves the problems of poor structural integrity, large span, no exposed beam, oversized member, member industrialization, building quality controllability, work efficiency, environmental protection and the like of the fabricated buildings; although the invention lays a foundation for the house industrialization process in China, the problems of unidirectionality of stress of the long prefabricated assembly type cavity plate components, cracks of gaps when two prefabricated assembly type cavity plates are spliced, limited connection space of transverse reinforcing steel bars of a bidirectional stress cavity floor slab and the like exist.
In order to overcome the difficulty that the assembly rate of the reinforced concrete assembly type building structure is low, the inventor applies 201710951186.2 'an assembly type building structure', the assembly rate is improved to more than 70% from within 40%, the structure is strong in safety and good in economical efficiency through national test acceptance, and the assembly type building structure plays a positive role in pushing the assembly type building for the government; however, the beam, the column and the floor slab joint are all in a cast-in-place state, and although the structure is safe, a large number of temporary supporting pieces are needed to support the beam, the column and the floor slab member, and a plurality of steel bar joints are arranged at the intersections of the beam and the column, so that the steel bar connection is complicated and the cost is high.
At present, a lot of technical problems are not solved yet in an assembly type building with a reinforced concrete frame structure, so that the building cost is high, and the popularization is hindered; therefore, the inventor verifies through experiments on the basis of the prior background art, creatively changes the cast-in-place concrete node areas of the beam, the column and the floor slab into prefabricating a reinforced concrete support body to enhance the capabilities of shearing force and impact resistance, and disperses the stressed reinforced nodes of the post-cast column and the post-cast beam on the assembling end of the main beam arranged on the diamond-shaped or triangular-shaped diamond corner outside the prefabricated reinforced concrete support body; the column stress steel bars penetrate through the criss-cross beam stress steel bars in the square column hole in the middle of the prefabricated reinforced concrete support and extend upwards, so that no steel bar joint is arranged at the joint part of the beam and the column, supporting rod pieces are greatly reduced, the assembly speed is further accelerated, the assembly quality is improved, and the construction cost is reduced; the new technology of the integral structure of the fabricated building is realized by the superposition layer of the upper flange of the post-cast floor slab of the strong column and the weak beam; is a major breakthrough of a new technical system of the assembly type building with the reinforced concrete frame structure, and becomes an urgent need for innovation in the technical field of the assembly type building.
Disclosure of Invention
The invention aims to thoroughly solve the shearing force and the punching force resistance of the beam-column joint of the assembly type frame structure, thereby achieving the purposes of improving the building quality, accelerating the building speed, realizing energy conservation and environmental protection, increasing the assembly rate, reducing the manufacturing cost and ensuring the structure to be safe and reliable; the advantages of the innovative assembly type building technology are brought into play, and the defects of the prior art are overcome; the novel technology of the integral structure of the assembly type building is that prefabricated components such as prefabricated reinforced concrete support bodies, column frames, main beams, cavity plate components, stairs and wall plates which are produced in an industrial mode are assembled on site, and concrete is poured in connecting spaces such as external nodes of the prefabricated reinforced concrete support bodies, the inside of the column frames and the upper flanges of building floor slabs, so that the overlapping layers of the upper flanges of the floor slabs are poured behind the strong columns and the weak beams; a large number of support rods are reduced, and the construction process is simple and convenient; the existing frame structure, frame core tube structure, steel structure assembled composite floor and double T-plate floor technology are transformed and upgraded into an assembled building technology with a prefabricated reinforced concrete support body; the technical system of the existing assembly type building structure is optimized, and a series of defects in the existing structure technology are overcome.
The technical scheme of the invention is that the assembly method of the reinforced concrete frame structure is characterized in that
The first step is as follows: manufacturing prefabricated column frames, prefabricated reinforced concrete support bodies, prefabricated main beams, prefabricated stairs and cavity floor slab components of required specifications and models in a factory; the prefabricated reinforced concrete support is in a diamond shape or a triangular shape; the rhombus-shaped water chestnut is provided with a main beam assembling end; the middle of the precast reinforced concrete support is a square column hole; then transporting the prefabricated components with the required specification and model manufactured in a factory to an installation site in batches;
the second step is as follows: binding column reinforcing steel bars on the foundation column part of the ground structure; the length of the binding column steel bar is greater than the height of the floor; sleeving the prefabricated column frame outside the bound column steel bars, pouring concrete in the prefabricated column frame after correcting the sleeving position coordinates of the prefabricated column frame, and constructing the reinforced concrete composite column;
the third step: horizontally hoisting the prefabricated reinforced concrete support body, aligning a square column hole in the middle of the prefabricated reinforced concrete support body with the reinforced concrete composite column, penetrating the exposed column steel bar of the composite column, and arranging the column steel bar at the upper end of the composite column; arranging a prefabricated reinforced concrete support body at the upper end of the adjacent composite column; correcting four corners or three corners of the support and positioning and supporting;
the fourth step: aligning the main beam to the main beam assembling end of the prefabricated reinforced concrete support body, connecting main beam steel bars of the main beam assembling ends of the adjacent prefabricated reinforced concrete support bodies, and assembling to form a main beam;
the fifth step: installing a prefabricated staircase; arranging cavity floor slab members in a reinforced concrete frame formed by the prefabricated reinforced concrete support body and the main beam, connecting the transverse rib beam reinforcing steel bars and additionally arranging longitudinal through long rib beam reinforcing steel bars in the inter-slab splicing grooves, and then laying the upper flange plate reinforcing steel bars of the floor slab and the upper supporting seat reinforcing steel bars; repeatedly binding column reinforcing steel bars, wherein the length of the column reinforcing steel bars is greater than the height of a floor, sleeving a prefabricated column frame outside the bound column reinforcing steel bars, and pouring concrete into the prefabricated column frame after correcting the sleeving position coordinates of the prefabricated column frame to build a reinforced concrete composite column; pouring concrete into the square column holes, the assembling ends of the main beams, the inter-plate splicing grooves, the upper flange plate steel bars of the floor slabs and the upper steel bars of the support;
a sixth step: the steps are repeated, and the reinforced concrete frame structure is simply assembled and combined.
In the square column hole in the middle of the prefabricated reinforced concrete support, longitudinal main beam steel bars and transverse main beam steel bars are crossed without steel bar nodes; the extension length of the assembling end of the main beam is more than or equal to 100 mm; and a main beam stress steel bar connecting end is reserved at the main beam assembling end.
The outer surface of the prefabricated column frame is smooth, and the inner surface of the prefabricated column frame is formed by injecting steel mesh concrete into an uneven rough surface; the prefabricated column frame is assembled on the upper surface of the outer side of the hollow part of the prefabricated reinforced concrete support; and column reinforcing steel bars are connected in the prefabricated column frame.
A vertical or horizontal combined bolt hole is reserved at the assembling end of the main beam; and a concave groove is reserved on the bottom surface of the main beam assembling end.
The two ends of the prefabricated main beam are inclined planes or vertical slotted inclined planes; vertical bolt holes are reserved at two ends of the main beam; grooves are reserved on the bottom surfaces of the two ends of the main beam; a steel plate connecting piece is assembled in the concave groove; and the reserved steel bars at the two ends of the prefabricated main beam are connected mechanically or in a grouting manner.
The lower bottom of the diamond edge of the precast reinforced concrete support is raised; the lower bottom of the prefabricated main beam is convex; when the adjacent prefabricated reinforced concrete supports are assembled, the side face of the assembling end of the main beam is temporarily positioned by the square pipe component with fixed specification and dimension.
The lower bottom surfaces of the prefabricated reinforced concrete support body and the prefabricated main beam are provided with L-shaped concrete bulges.
The lower bottom of the diamond edge of the precast reinforced concrete support is raised; the lower bottom of the prefabricated main beam is convex; when the adjacent prefabricated reinforced concrete supports are assembled, the side face of the assembling end of the main beam is temporarily positioned by the square pipe component with fixed specification and dimension.
The cavity floor slab member is a hexagon and is formed by two right-angle edges and the bottom edges of two cut angles; the cavity body in the cavity floor slab component adopts a ribbed steel mesh hollow, and the ribbed steel mesh hollow is an expanded ribbed steel mesh hollow or a fish scale ribbed steel mesh hollow.
Another embodiment of the present invention is that the cavity floor member is assembled to form an exposed beam floor on the upper half of the side of the precast convex beam or to form an exposed beam-free floor on the whole of the side of the precast convex beam.
The invention relates to an assembling method of a reinforced concrete frame structure, which decomposes a building structure design drawing aiming at the geometric dimension of a main beam and a floor system of a horizontal structure and columns and wall plates of a vertical structure on the basis of the building structure design drawing, carries out quantitative secondary design or BIM treatment on an assembling form, decomposes the drawing into N columns and beams, an assembled cavity plate component, a wall component and the like, manufactures the assembled component of the specification model according to the decomposed drawing, conveys the component to an engineering field for assembly and post-pouring to form an assembled integral building.
The method comprises the following steps of prefabricating a diamond-shaped prefabricated reinforced concrete support body, a prefabricated column frame, a prefabricated main beam, a stair, a cavity floor member and a self-heat-preservation wall plate member or wall plate; the prefabricated column frame can be manufactured by adopting a centrifugal force manufacturing process, at the moment, four inner corners of the square prefabricated column frame are unevenly thickened, the four inner corners are controlled by internally arranging a reverse diamond right-angle inner mold, and when the square prefabricated column frame is manufactured by adopting the centrifugal force, a steel wire mesh is arranged in a square mold rotated by the centrifugal force to form the prefabricated column thin-wall frame with the steel wire mesh concrete; when the square prefabricated column thin-wall frame is smooth on three sides and rough on one side, the rough side faces the outer wall, and the prefabricated self-heat-insulation wallboard component is assembled and hung on the rough side. Transporting the prefabricated member to an engineering site, and then assembling the prefabricated member according to the sequence of the column, the support, the beam, the floor slab and the wallboard; firstly, a column is erected, a square column hole in the middle of a rhombic prefabricated reinforced concrete support is aligned to an extended column steel bar, the column steel bar avoids main beam steel bars which are crisscrossed in the prefabricated reinforced concrete support hole, and the column steel bar penetrates through the column hole; the prefabricated reinforced concrete support is assembled on post-cast concrete column top concrete under the action of the prefabricated column frame, and the floor height of each floor is controlled by utilizing the length of the prefabricated column frame; when the support is assembled on each column, a bolt rod of a square tube with fixed specification, model and size is inserted into a bolt hole preset at the assembling end of a main beam, the reinforced concrete support body is temporarily and mutually drawn and connected by the square tube with fixed specification, model and size, after the verticality of the prefabricated column frame and the positioning precision of the prefabricated reinforced concrete support body are measured and corrected, the column reinforcing steel bar is connected and extended and bound, the prefabricated column frame is sleeved outside the bound column reinforcing steel bar, concrete is poured in the prefabricated column frame, the column top support is fixed, the continuous extension of the height of each layer is controlled, and when a cavity is placed in a column reinforcing steel bar cage, a hollow column can be formed.
In the second process, in order to strengthen the structural strength and reduce the self weight, the prefabricated main beam can adopt a convex hollow beam or a porous hollow beam with small aperture; two ends of the two prefabricated main beams are inclined planes or vertical slotted inclined planes; vertical bolt holes are reserved at two ends; the concave grooves are reserved on the bottom surfaces of the two ends, so that the assembly of the permanent steel plate connecting piece is facilitated, the lower surface of the permanent steel plate connecting piece is not exposed, and the lower surface of the permanent steel plate connecting piece protrudes and the steel plate connecting piece rusts; then, hoisting a main beam at the main beam assembling ends of the two column top supports, installing a connecting steel plate in a groove prefabricated at the bottom of the main beam assembling end, fixing the supports and the main beam by using bolts through vertical bolt holes, and then connecting reinforcing steel bars extending from the assembling ends and main beam reserved reinforcing steel bars into main beam stressed reinforcing steel bars in a mechanical connection or grouting connection mode; the process of connecting steel plates is not needed, and the steel bars extending from the assembling end and the reserved steel bars of the main beam are directly connected through mechanical connection or grouting; the reinforcing steel bars extended from the assembling end and the reserved reinforcing steel bars of the main beam are temporarily supported by vertical supports through four water chestnuts mechanically connected with the front support.
Mounting prefabricated cavity plate members in the third process, wherein the prefabricated cavity plate members consist of longitudinal reinforced concrete rib beams, transverse reinforced concrete rib beams, a cavity body and lower flange plates; the widths of longitudinal and transverse side rib beams in the cavity plate member are between 50mm and 100mm, the widths of the longitudinal and transverse rib beams are between 150mm and 200mm, L-shaped concrete bulges are arranged on the lower bottom surface of the longitudinal reinforced concrete rib beam of the cavity plate member for splicing to form a spliced post-cast longitudinal rib beam notch, longitudinal rib reinforcements are additionally arranged in the notch, the key of changing a simply supported cavity plate member into a continuous floor rib beam is a notch space, and meanwhile, the problem of cracking of a combined joint when two cavity plate members are spliced is thoroughly solved; actually, the height of the L-shaped concrete bulge is the depth of the shallow combined seam, and the depth of the shallow seam is generally 30 mm; in addition, the splicing notches provide a connecting space for the regenerated transverse rib beam, transverse rib reinforcing steel bars of two adjacent cavity plate members are connected by adopting a welding or mechanical connection or grouting method to form the regenerated transverse rib beam, and the cavity plate member one-way stress plate is changed into an assembly method floor slab two-way stress plate of a reinforced concrete frame structure; in order to reduce the connection of the regenerated transverse rib beam, a through-length prestressed steel bar or a prestressed strand pore canal pipe can be preset in the cavity plate member rib beam; pre-stressed steel bars are serially connected into the hole pipe, and a post-tensioning method is adopted to apply pre-stress; when the beam and the cavity plate member are manufactured and assembled on site, the longitudinal stressed steel bars can be changed into prestressed steel stranded ropes; the cavities of the cavity plate component are communicated with each other to form a dark air duct; the air duct is used for a fire-fighting smoke-discharging dark air duct, in order to reduce fire-fighting smoke-discharging resistance, an Jiong-shaped thin-wall air duct or a thin-plate air duct is arranged in the ribbed steel mesh hollow, and the ribbed steel mesh hollow is provided with holes along the end of the Jiong-shaped thin-wall air duct to form a local dark air duct, so that the resistance caused by the fact that the whole cavity participates in smoke discharging is reduced during smoke discharging, and the smoke discharging effect is improved again; the cavity body in the cavity plate component is formed by a ribbed steel mesh hollow or a fish scale ribbed steel mesh hollow; hoisting the cavity floor slab member in place, wherein the cavity floor slab member is a hexagon and is formed by two right-angle sides and two bevel sides of an isosceles right triangle; the hypotenuses of the two isosceles right triangles are tightly close to the diamond edge of the diamond-shaped prefabricated reinforced concrete support body; when the exposed beam structure is adopted, the cavity floor member is assembled on the rhombic prefabricated reinforced concrete support and the L-shaped concrete bulge on the lower bottom surface of the main beam, and the rhombic prefabricated reinforced concrete support and the L-shaped concrete bulge on the lower bottom surface of the main beam are taken as the exposed beam part of the main beam; when the structure without the exposed beam is adopted and the cavity floor member is manufactured, the bottom of the assembled cavity floor member with the shape of the lower part of the convex main beam is designed to be the concave cavity floor member, and the convex main beam and the concave cavity floor member are combined to form the structure without the exposed beam.
And fourthly, pouring concrete into the rhombic precast reinforced concrete support, the precast main beam or precast column frame, the upper flange of the cavity floor member and the spaces, curing, pouring concrete and removing the mold to obtain the required reinforced concrete frame structure. Fifthly, assembling and decorating the prefabricated self-heat-preservation wallboard on a strut frame of the frame column; when the frame core tube structure is implemented, the connection mode of the main beam is basically the same as that of the scheme, only one end of the main beam is connected with the main beam connection end at the corner of the triangular support, and the other end of the main beam is connected with the main beam connection part port of the core tube; the joint part port of the main beam core barrel is preferably protruded more than 500mm outwards from the barrel body of the core barrel; the diamond support has the same function as the triangular support, but has different shapes; the main beam extension steel bars of the core barrel and the prefabricated main beam steel bars can be connected on the steel plate in a staggered mode. The implementation may be staggered.
Drawings
FIG. 1 is a plan view of an embodiment of the frame structure of the present invention.
FIG. 2 is a plan view of the diamond-shaped precast reinforced concrete support of the present invention.
FIG. 3 is a block diagram of a precast column of the present invention.
Fig. 4 is a cross section of an open-beam-free floor slab of the prefabricated convex beam of the invention.
Fig. 5 is a plan view of a cavity plate member of the present invention.
FIG. 6 is a structural view of the ribbed steel mesh in the cavity plate member of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a plan view of an embodiment of the frame structure of the present invention, which, when the present invention is implemented,
the first step is as follows: manufacturing a column frame 3 of prefabricated concrete of a required specification and model of a frame structure 1, a rhombic prefabricated reinforced concrete support body 2 or a triangular prefabricated reinforced concrete support body 21, a prefabricated main beam 4, a prefabricated staircase, a cavity floor 5 and column steel bars 31 in a factory; the rhombus-shaped prefabricated reinforced concrete support body 2 comprises a main beam assembling end 24, a support middle square column hole 22, a rhombus edge 23, a rhombus 25, reinforced concrete 26 between beams, bolt holes 27, a main beam connecting steel plate 28 and main beam crossed steel bars 29 in the support middle square column hole 22; then transporting the prefabricated concrete components with the required specification and model manufactured in a factory to a frame structure construction engineering site in batches;
the second step is as follows: binding column reinforcing steel bars 31 on the foundation column part of the ground structure; the length of the binding column steel bar is greater than the height of the floor;
sleeving the prefabricated column frame 3 outside the bound column steel bars 31, correcting the sleeving position coordinates of the prefabricated column frame 3, pouring concrete 33 in the prefabricated column frame, and building the reinforced concrete composite column;
the third step: the prefabricated reinforced concrete support body 2 is lifted horizontally, a square column hole 22 in the middle of the rhombic prefabricated reinforced concrete support body 2 is aligned to a reinforced concrete composite column, a column steel bar 31 exposed out of the composite column penetrates through the composite column and is arranged on the concrete at the upper end of a composite column prefabricated column frame 3, four water caldrons 25 of the rhombic prefabricated reinforced concrete support body 2 are supported by vertical supporting rods, and a main beam assembling end 24 is aligned to the water caldrons of the prefabricated reinforced concrete support body 2 at the upper end of an adjacent composite column; a diamond or three-angle prefabricated reinforced concrete support body 21 is arranged at the upper end of the adjacent composite column; temporarily lapping the main beam assembling end between the main beam assembling end 24 and the main beam connecting end 211 by using a positioning square steel pipe, correcting and positioning and supporting; aligning the main beam 4 to the main beam assembling end of the prefabricated reinforced concrete support body, connecting the steel plates 28 of the longitudinal notches of the main beam lower bottoms of the main beam assembling ends of the adjacent prefabricated reinforced concrete support bodies, fixing the steel plates through the screws in the bolt holes 27, and simultaneously connecting and assembling the steel plates through the reinforced joints 212 to form the main beam;
the fourth step: installing a prefabricated staircase; a cavity floor slab member 5 is arranged in a reinforced concrete frame formed by the prefabricated reinforced concrete support body and the main beam, transverse rib beam steel bars 51 are connected, longitudinal through long rib beam steel bars 52 are additionally arranged in the splicing grooves among the plates, and then upper flange plate steel bars 53 of the floor slab and upper part steel bars of the support are laid; repeatedly binding the extended column steel bars 31, wherein the length of the extended column steel bars is equal to the height of a floor, sleeving the prefabricated column frame 3 outside the bound column steel bars 31, pouring concrete 33 in the prefabricated column frame after correcting the coordinates of the sleeving position of the prefabricated column frame, and constructing a reinforced concrete composite column; pouring concrete into the square column holes 22, the main beam assembling ends 24, the inter-plate splicing grooves 54, the upper flange plate steel bars 52 of the floor slab and the upper steel bars of the support; the steps are repeated, and the reinforced concrete frame structure is simply assembled and combined. Or the N layers of frames are assembled firstly, then the cavity floor member 5 and the reinforced concrete poured later are assembled.
FIG. 2 is a plan view of a diamond-shaped precast reinforced concrete support of the present invention, the diamond-shaped precast reinforced concrete support 2 includes a main beam assembling end 24, a support middle square column hole 22, a diamond edge 23, a diamond corner 25, a reinforced concrete between beams 26, a bolt hole 27, a main beam connecting steel plate 28, and a main beam cross reinforcement 29 in the support middle square column hole 22; placing the diamond flat die on a vibrating table, installing a bound main beam steel reinforcement framework in the die or binding a main beam steel reinforcement 29 framework in the diamond flat die, and pouring concrete 26 after arranging shear-resistant steel reinforcements between the longitudinal main beam and the transverse main beam to form a diamond-shaped prefabricated reinforced concrete support 2; when the hollow mold is used as a blind air duct or the dead weight is reduced, a hollow mold is arranged in a framework of the main beam steel bar 29 bound in the rhombic flat mold, and the hollow mold can be drawn out or permanently kept after concrete pouring. The lower bottom edge of the diamond edge 23 of the diamond-shaped precast reinforced concrete support 2 is raised, and the raised part of the lower bottom edge of the diamond edge 23 is in concave-convex matching with the cavity floor slab member during assembly to form the hidden beam support 2 or the exposed beam support 2.
FIG. 3 is a block diagram of a prefabricated column according to the present invention, wherein the prefabricated column frame 3 can be produced into a prefabricated column frame 3 with smooth four sides by using a centrifugal force mold system, and a local internal mold must be arranged at four inner corners of the centrifugal force mold system; three-side external molds and four-side internal molds with seals can be placed on a vibration table to produce the prefabricated column frame 3 with smooth three sides, a steel wire mesh is clamped between the external molds and the internal molds, concrete 35 is injected and the prefabricated column frame 3 is formed by vibration casting; the three-side external mold with the seal and the ribbed steel mesh can be used for replacing the four-side internal mold, concrete is injected between the three-side external mold and the ribbed steel mesh to vibrate, and then the prefabricated column frame 3 can be obtained, the three outer sides of the prefabricated column frame 3 are smooth, and the four inner sides of the prefabricated column frame 3 are rough, so that the post-pouring column concrete can be favorably compounded.
FIG. 4 is a cross section of a bare-beam-free floor slab of the prefabricated convex beam of the invention, the width of the lower bottom of the prefabricated convex main beam 4 is within 600mm, and the height of the prefabricated convex main beam 4 is within 800 mm; to reduce weight, a hollow 412 may be formed; the bottom 401 of the prefabricated convex beam 4 is supported by the large-diameter support rod 403, when the prefabricated convex beam without the exposed beam is adopted, the lower end of the cavity plate member is concave, the protruding height h of the bottom of the prefabricated convex main beam 4 is generally within 100mm, the best height h is 60mm, and at the moment, the end of the reinforcing steel bar at the bottom of the longitudinal rib beam is upwarped; the protruding width of the bottom of the prefabricated convex main beam 4 is generally within 200mm, the best is 150mm, the lower end of the end head of the cavity plate component is in a concave size and is matched with the beam, and the concave-convex combination is realized, so that the exposed beam-free floor slab is realized.
FIG. 5 is a plan view of a hexagonal cavity plate member according to the present invention, wherein the cavity plate member 53 is composed of a longitudinal rib beam 501, a longitudinal side rib beam 502, an L-shaped concrete projection 503 of the longitudinal side rib, a transverse rib beam 504, a regenerated transverse rib beam steel bar 505, an end transverse rib beam 506, a mating edge 510 with a diamond-shaped precast reinforced concrete support diamond edge, a ribbed steel mesh 507, and a concealed air duct 508; ribbed steel mesh hollow 507 is arranged in the criss-cross rib beam grids, and in order to reduce the fire-fighting smoke-discharging resistance, a small plate-made hidden air duct is additionally arranged in the ribbed steel mesh hollow 507 to be communicated with a hidden air duct 508; the surface is provided with a hanging ring 509 and a rib steel bar is exposed in advance, and concrete or mortar is prefabricated in the rib beam and the lower flange plate; the matching edge 510 with the diamond edge of the diamond-shaped precast reinforced concrete support is generally the hypotenuse of an isosceles right triangle.
FIG. 6 is a structural diagram of a ribbed steel mesh hollow 507 for forming a cavity in a cavity plate member according to the present invention, wherein the ribbed steel mesh hollow 507 is formed by a ribbed steel mesh body as a hollow body 515, a steel mesh support net 516 is arranged inside, and in order to reduce the fire-fighting smoke-discharging resistance, an Jiong-shaped thin-walled air channel 517 or a thin-plate air channel is arranged inside the ribbed steel mesh hollow 307; the ribbed steel mesh hollow 507 is used as a fire-fighting smoke-proof air duct or a solar air supply pipeline along the end opening 518 of the Jiong-shaped thin-wall wind 517, so that the multifunctional application of the cavity floor is realized.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the specific embodiments of the present invention without departing from the spirit and scope of the present invention, and all modifications or equivalent substitutions should be covered by the claims of the present invention.
Claims (10)
1. An assembling method of a reinforced concrete frame structure is characterized in that
The first step is as follows: manufacturing prefabricated column frames, prefabricated reinforced concrete support bodies, prefabricated main beams, prefabricated stairs and cavity floor slab components of required specifications and models in a factory; the prefabricated reinforced concrete support is in a diamond shape or a triangular shape; the rhombus-shaped water chestnut is provided with a main beam assembling end; the middle of the prefabricated reinforced concrete support body is a square column hole; then transporting the prefabricated components with the required specification and model manufactured in a factory to an installation site in batches;
the second step is as follows: binding column reinforcing steel bars on the foundation column part of the ground structure; the length of the binding column steel bar is greater than the height of the floor; sleeving the prefabricated column frame outside the bound column steel bars, pouring concrete in the prefabricated column frame after correcting the sleeving position coordinates of the prefabricated column frame, and constructing the reinforced concrete composite column;
the third step: horizontally hoisting the prefabricated reinforced concrete support body on the reinforced concrete composite column, aligning a square column hole in the middle of the prefabricated reinforced concrete support body with the reinforced concrete composite column, aligning the square column hole in the middle of the diamond-shaped prefabricated reinforced concrete support body with an extended column steel bar, avoiding main beam steel bars which are crisscrossed in the prefabricated reinforced concrete support hole by the column steel bar, penetrating through the column hole and penetrating through exposed column steel bars of the composite column, and arranging the column steel bars at the upper end of the composite column; arranging a prefabricated reinforced concrete support body at the upper end of the adjacent composite column; correcting four corners or three corners of the support and positioning and supporting; the prefabricated reinforced concrete support is used for post-pouring concrete on the top of the column frame under the action of the prefabricated column frame, and the floor height of each floor is controlled by utilizing the length of the prefabricated column frame;
the fourth step: aligning a main beam to a main beam assembling end of a prefabricated reinforced concrete support body, and connecting main beam steel bars of main beam assembling ends of adjacent prefabricated reinforced concrete support bodies, wherein a main beam stressed steel bar connecting end is reserved at the main beam assembling end; assembling to form a main beam;
the fifth step: installing a prefabricated staircase; arranging cavity floor slab members in a reinforced concrete frame formed by the prefabricated reinforced concrete support body and the main beam, connecting the transverse rib beam reinforcing steel bars and additionally arranging longitudinal through long rib beam reinforcing steel bars in the inter-slab splicing grooves, and then laying the upper flange plate reinforcing steel bars of the floor slab and the upper supporting seat reinforcing steel bars; repeatedly binding column reinforcing steel bars, wherein the length of the column reinforcing steel bars is greater than the height of a floor, sleeving a prefabricated column frame outside the bound column reinforcing steel bars, and pouring concrete into the prefabricated column frame after correcting the sleeving position coordinates of the prefabricated column frame to build a reinforced concrete composite column; pouring concrete into the square column holes, the assembling ends of the main beams, the inter-plate splicing grooves, the upper flange plate steel bars of the floor slabs and the upper steel bars of the support;
a sixth step: the steps are repeated, and the reinforced concrete frame structure is simply assembled and combined.
2. The method of claim 1, wherein the longitudinal main beam reinforcements and the transverse main beam reinforcements intersect without reinforcement nodes in the middle square column hole of the precast reinforced concrete support; the extension length of the assembling end of the main beam is more than or equal to 100 mm.
3. The assembling method of a reinforced concrete frame structure according to claim 1, wherein the outer surface of the precast column frame is smooth, and the inner surface is formed by injecting steel mesh concrete into an uneven rough surface; the prefabricated column frame is assembled on the upper surface of the outer side of the hollow part of the prefabricated reinforced concrete support; and column reinforcing steel bars are connected in the prefabricated column frame.
4. The assembling method of a reinforced concrete frame structure according to claim 1, wherein a vertical or horizontal joint bolt hole is reserved at the assembling end of the main beam; and a concave groove is reserved on the bottom surface of the main beam assembling end.
5. The assembling method of a reinforced concrete frame structure according to claim 1, wherein both ends of the precast main girder are inclined planes or vertical grooved inclined planes; vertical bolt holes are reserved at two ends of the main beam; grooves are reserved on the bottom surfaces of the two ends of the main beam; a steel plate connecting piece is assembled in the concave groove; and the reserved steel bars at the two ends of the prefabricated main beam are connected mechanically or in a grouting manner.
6. The assembling method of a reinforced concrete frame structure according to claim 1, wherein a lower bottom of a diamond edge of the precast reinforced concrete support is protruded; the lower bottom of the prefabricated main beam is convex; when the adjacent prefabricated reinforced concrete supports are assembled, the side face of the assembling end of the main beam is temporarily positioned by the square pipe component with fixed specification and dimension.
7. The assembling method of a reinforced-concrete frame structure according to claim 1, wherein the lower bottom surfaces of the precast reinforced-concrete support body and the precast main beam have L-shaped concrete protrusions.
8. The assembling method of a reinforced concrete frame structure according to claim 1, wherein a lower bottom of a diamond edge of the precast reinforced concrete support is protruded; the lower bottom of the prefabricated main beam is convex; when the adjacent prefabricated reinforced concrete supports are assembled, the side face of the assembling end of the main beam is temporarily positioned by the square pipe component with fixed specification and dimension.
9. A method of assembling a reinforced concrete frame structure as claimed in claim 1, wherein said cavity floor member is hexagonal in shape formed by two right-angled edges and the base of two cut-off corners; the cavity body in the cavity floor slab component adopts a ribbed steel mesh hollow, and the ribbed steel mesh hollow is an expanded ribbed steel mesh hollow or a fish scale ribbed steel mesh hollow.
10. A method of assembling a reinforced concrete frame structure according to claim 1, wherein the cavity floor member is assembled to form an open beam floor or an open beam floor in which all of the side surfaces of the precast convex beams are formed at the upper half of the side surfaces of the precast convex beams.
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| CN106381952B (en) * | 2016-10-21 | 2019-03-26 | 王海崴 | A kind of assembled overlapping cavity building roof |
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