Construction method of reinforced concrete fabricated frame structure
By using mold-free and foaming cement technology in a large-span prefabricated frame structure, the problems of complex structural integrity and insufficient performance are solved, and efficient self-insulating, sound insulation and fire resistance are achieved, which meets green and energy-saving construction. demand.
Patent Information
- Application Number
- CN202311647695.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2024-12-24
AI Technical Summary
Large span reinforced concrete prefabricated frame structures have problems such as complex structural integrity, small area of floor slabs, insufficient self-insulation, sound insulation and fire resistance, especially in green and energy-saving construction.
Adopt the column frame mold, the groove-free main beam mold and the self-insulating floor slab components. The prefabricated floor slab components with foam cement are produced in the factory through mass production of industrial production, and the cement foam slurry, floor rib beams and thin bottom plates are used. Seamless composite, forming a groove structure, enhancing the self-insulating, sound insulation and fire resistance of the floor slabs, and performing overall assembly at the construction site to optimize the overlapping form of beam and column nodes and floor slab components.
The integrity and performance improvement of the large-span prefabricated frame structure has been achieved, and the structural complexity, small floor area, and insufficient fireproof and thermal insulation performance in the existing technology have been overcome, achieving the innovative technical effect of Class A fire prevention.
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Figure CN119177777A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an assembled building frame structure and a steel-concrete composite structure system technology, and in particular to a construction method of a reinforced concrete assembled frame structure. Background Art
[0002] The country advocates green and energy-saving construction, and prefabricated buildings are the starting point. At present, the development of prefabricated reinforced concrete frame structure technology is relatively lagging. In prefabricated reinforced concrete structure projects, the vertical structure mainly adopts prefabricated reinforced concrete shear wall structure formed by prefabricated sandwich wall panels; the horizontal floor slabs mostly use small-span truss plates; the use of prefabricated frame structure technology in large-span reinforced concrete construction projects has just started.
[0003] Large-span reinforced concrete prefabricated frame structures are the key and difficult points of prefabricated buildings. There are beam-column joints, beam-slab overlaps, large-area single floor slabs, green and energy-saving construction, multifunctional buildings, self-insulation performance and self-fire protection that have not been completely solved. In view of the above problems, it is necessary to carry out systematic innovation on prefabricated reinforced concrete frame structures and large-area single floor slabs.
[0004] In order to effectively solve the many problems of prefabricated reinforced concrete frame structures, the inventors applied for ZL201610919684.4 "A prefabricated building cavity floor", ZL201910577422.8 "A method for connecting a main beam and a structural support", ZL201910577446.3 "A method for connecting steel bars of a prefabricated frame floor", 202220107866.2 "A steel-concrete composite structure formwork-free floor", etc. Through these inventions and creations, the connection between beam-column nodes and steel bars is optimized under the premise of ensuring the safety of prefabricated building structures; the prefabricated reinforced concrete frame structure system is innovated as a whole, the core technology of prefabricated reinforced concrete frame structures is solved, and the development of the prefabricated building industry and the progress of building science and technology are promoted.
[0005] In order to transform the existing prefabricated building floor technology into a reinforced concrete prefabricated frame structure technology that is green and energy-saving, the inventor, based on his own existing background technology, transformed the prefabricated hollow floor technology using a filler to form holes into a prefabricated floor component with a large single area and self-insulating performance, and industrialized mass production of non-dismantling column frame molds, non-dismantling trough-shaped main beam molds and prefabricated floor components in the factory; fully utilized the densely connected foamed infinitely foamed cement to solve the fire protection and insulation of the floor itself, forming a new self-fireproof and heat-insulating floor prefabricated frame structure system. The existing prefabricated composite slab and hollow floor technology are transformed and upgraded, and applied to large-span prefabricated building structures to solve the urgent needs of large-span prefabricated frame structure buildings and fire protection and insulation performance and achieve Class A fire protection innovation technology. Summary of the invention
[0006] The purpose of the present invention is to solve the problem of adopting prefabricated buildings for large-span buildings, and to form a large-span reinforced concrete prefabricated frame structure by organically integrating the structural integrity of cast-in-place buildings and the necessity of prefabricated prefabricated buildings. First, a non-dismantling column frame mold, a non-dismantling trough-shaped main beam mold, and a prefabricated floor slab component with insulation, sound insulation, fire resistance, and a large single area are manufactured to realize a large-span reinforced concrete prefabricated frame structure. Secondly, an innovative process for manufacturing prefabricated floor slab components is adopted to form a groove formed by a floor slab rib beam and a thin bottom plate, and cement foam slurry is injected into the groove. After the cement foam slurry is foamed, it occupies the entire groove space and is seamlessly compounded with the floor slab rib beam and the thin bottom plate. This This not only reduces the deadweight of the assembled floor components, but also enhances the functions of self-insulation, sound insulation and fire prevention; secondly, the floor bottom area of the assembled floor components with self-insulation performance is set to be larger than the floor surface area to meet the structural requirements, transform the simply supported floor components into continuous slabs, transform the one-way floor components into two-way stressed floors, and solve the connection and crack resistance of the cross-ribbed beam reinforcement; then, in the steel-concrete composite structure, the assembled floor components are placed in the steel beam; when the reinforced concrete assembled frame structure is assembled as a whole, the non-disassembly column frame mold and the non-disassembly trough-shaped main beam mold are used to solve the problems of the frame structure and the superposition form of the main beam and the floor components. The present invention is implemented to optimize the existing large-span assembled frame structure technology system, laying the foundation for realizing large-span assembled buildings without visible secondary beams; overcome the series of defects of the existing technology such as complex structural integrity, small floor unit area, self-insulation, sound insulation, and fire prevention.
[0007] A method for constructing a reinforced concrete assembled frame structure: comprising a non-disassembly column frame mold, a non-disassembly grooved main beam mold and a self-insulating floor component; the self-insulating floor component is composed of a rib beam, a steel mesh, a thin bottom plate, a groove formed by the rib beam and the thin bottom plate, cement foam slurry, rib beam stirrups, a hanging ring and a connecting piece; the rib beam includes a longitudinal main rib beam, a longitudinal side rib beam, a transverse main rib beam, and a transverse narrow rib beam; the characteristics are: The first step: make the required specifications and models of the prefabricated frame structure, the required trough-shaped main beam mold, and the various rib beam steel bars, rib beam stirrups, steel meshes, hanging rings and connectors required for the self-insulating floor; prepare the foaming equipment, cement and foaming agent required for the foamed cement; make the outer mold frame and square inner mold composed of the steel strip flat mold platform with vibration and the longitudinal outer mold and transverse outer mold required for the self-insulating floor components; Step 2: Make non-dismantling column frame molds, non-dismantling trough-shaped main beam molds and self-insulating floor components: 1. Make a non-disassembly column frame mold; the non-disassembly column frame mold is a thin-wall non-disassembly column frame mold, and small holes or clamps are reserved on the four side walls of the column frame mold. 2. Make a disassembly-free trough-shaped main beam mold; the trough-shaped main beam mold is connected with angle steel, and N pressure-resistant parts are added to the side plates of the main beam mold along the height of the side plates; two sets of stirrups are set in the trough-shaped main beam mold to control the shape of the main beam reinforcement binding; 3. To make self-insulating floor components, an outer mold is installed on a steel strip flat mold platform with vibration to form an outer mold frame; a steel mesh, rib beam steel bars and rib beam stirrups are laid in the outer mold frame and tied, and the rib beam stirrups are 20mm higher than the rib beam steel bars; an Ω-shaped hanging ring is set in the transverse main rib beam steel bars; a square frame inner mold is installed in the grid formed by the cross-shaped rib beam steel bars to form a rib beam mold groove with rib beam steel bars; an appropriate amount of concrete is injected into the rib beam mold groove and the steel mesh to form a reinforced concrete rib beam and a thin bottom plate with a steel mesh; when the concrete is in the initial setting state, the square frame inner mold is removed in time to form a groove formed by the reinforced concrete rib beam and the thin bottom plate with a steel mesh; the configured foamed cement liquid is quantitatively injected into the groove for rapid foaming, and high temperature and high humidity curing is performed, the outer mold frame is removed, and a connector is installed at the end of the transverse main rib beam steel bars to obtain a self-insulating floor component; The third step: transport the manufactured non-dismantling column frame formwork, non-dismantling trough-shaped main beam formwork and self-insulating floor slab components to the construction site; the column frame formwork is installed outside the tied column reinforcement cage, and the reinforced concrete column is poured first; the main beam support is installed, and a sleeper with a width greater than 0.6 meters is placed on the top of the main beam support tube, and the main beam reinforcement is placed and tied after the trough-shaped main beam formwork is installed on the sleeper; the main beam reinforcement uses two sets of stirrups to control the shape of the main beam reinforcement narrowing at the upper part and widening at the lower bottom, and the self-insulating floor slab components are placed on the upper end of the side plate of the non-dismantling trough-shaped main beam formwork; the connector installed at the end of the transverse main rib beam reinforcement is quickly connected with high-strength bolts, and then the upper flange plate structural reinforcement is arranged on the upper surface of the self-insulating floor slab component; the structural reinforcement is anchored with the rib beam stirrups and Ω-shaped lifting rings, and then concrete is poured to build a reinforced concrete assembled frame structure.
[0008] In another preferred embodiment, the bottom area of the self-insulating assembled floor component is greater than 3% of the floor surface area.
[0009] In another preferred embodiment, the connecting member is a steel plate member, a channel steel member or an angle steel member; the connecting member is arranged at both end portions of the steel bars of the reinforced concrete transverse rib beam.
[0010] In another preferred embodiment, among the four right angles of the prefabricated floor component, at least one of the angles has no foamed cement formed on the upper end of the thin bottom plate.
[0011] In another preferred solution, both ends of the steel bars of the reinforced concrete transverse rib beam are tapped with screw threads to form screw thread rods; the screw thread rods pass through the connecting pieces and are fitted with nuts.
[0012] In another preferred embodiment, the upper surface of the prefabricated floor component is sprayed with reinforced cement mortar or reinforcing agent.
[0013] In another preferred embodiment, the column frame mold is an aluminum column frame mold.
[0014] A method for constructing a reinforced concrete prefabricated frame structure is carried out on the basis of a design drawing of the prefabricated frame structure. The design drawings are decomposed according to the geometric dimensions of a non-disassembly column frame mold, a non-disassembly trough-shaped main beam mold and a prefabricated floor slab required for the prefabricated frame structure. The prefabricated frame mold is quantitatively decomposed into individual non-disassembly column frame molds, non-disassembly trough-shaped main beam molds and prefabricated floor slab components. The factory organizes production according to the quantitatively decomposed floor slab components. The first step: make the required specifications and models of the prefabricated frame structure, the required trough-shaped main beam mold, and the various rib beam steel bars, rib beam stirrups, steel meshes, hanging rings and connectors required for the self-insulating floor; prepare the foaming equipment, cement and foaming agent required for the foamed cement; make the outer mold frame and square inner mold composed of the steel strip flat mold platform with vibration and the longitudinal outer mold and transverse outer mold required for the self-insulating floor components; Step 2: Production of non-dismantling column frame molds, non-dismantling trough-shaped main beam molds and self-insulating floor components: 1. Make the non-removal column frame mold; special equipment is used to produce thin-walled non-removal column frame molds with steel mesh. In order to enhance the lateral pressure of the thin-walled non-removal column frame mold, small holes for lateral pressure resistance are reserved on the four side walls, which is convenient for locking temporary reinforcement plates outside the thin-walled non-removal column frame mold. After the concrete solidifies, the temporary reinforcement plates are removed in time. You can also make clamps and use them to clamp the outer walls around the thin-walled non-removal column frame mold at the construction site to enhance the resistance to lateral pressure. 2. Make a non-disassembly trough-shaped main beam mold; use three cement fiber boards as the bottom plate of the non-disassembly trough-shaped main beam mold and the open trough-shaped main beam mold composed of two side plates. The two side plates are placed on the bottom plate to form a right angle, and the angle steel is placed in the inner angle of the right angle. The side plate and the bottom plate are fixed on the angle steel to make an open trough-shaped main beam mold; in order to enhance the side plate's resistance to the positive pressure of the self-insulating floor slab components, N pressure-resistant parts are added along the height direction of the side plate; two sets of stirrups are to be set in the trough-shaped main beam mold to control the shape of the main beam steel bar binding; 3. To make self-insulating floor slab components, first make a groove formed by reinforced concrete rib beams and a thin bottom plate with a steel mesh: install the longitudinal outer mold and the transverse outer mold on the special steel formwork for prefabricated floor slab components with a vibration device and a large area, and the longitudinal outer mold Functional mold holes that form the connection between the outer arc angle and the transverse rib beam are set on the outer mold to form an outer mold frame; functional mold holes and modules that form the connection between the outer arc angle and the transverse rib beam are set on the outer mold of the longitudinal side rib beam, which will inevitably produce a longitudinal side rib beam that corresponds to the outer mold of the longitudinal side rib beam and meets the structural requirements; the outer arc angle of the outer mold of the longitudinal side rib beam is set to strengthen the longitudinal side rib beam structure of the prefabricated floor component, prevent the bottom of the longitudinal side rib beam from being damaged and the joint seam from being shallow to the limit; mold holes are set in the connection area of the transverse main rib beam to expose the transverse main rib beam reinforcement, and the module is the concrete occupying the arc angle of the connection area of the transverse main rib beam reinforcement, which is convenient for horizontal movement during the installation of the connecting parts; the steel mesh and rib beam reinforcement and rib beam stirrups laid in the outer mold frame, the main rib beam The steel stirrups are double-supported stirrups, the side rib beam steel stirrups are S-shaped stirrups, the rib beam stirrups are 20mm higher than the rib beam steel bars, and provide the anchorage length of the upper flange plate steel bars; an Ω-shaped lifting ring is set in the transverse main rib beam; a square frame inner mold is installed in the grid formed by the cross-rib beam steel bars to form a rib beam mold groove with rib beam steel bars; the square frame inner mold is first composed of two templates to form a right-angle mold, and then the two right-angle molds are combined to form a square frame inner mold; in order to facilitate the installation and disassembly of the square frame inner mold, the length of the two templates of the right-angle mold is, the length of template A = the length of template B + the thickness of the template; if it is used as a fire protection and smoke exhaust dark air duct, the square frame inner mold is only half of the original one, and the other half uses a semi-elliptical edge to avoid demolding; the best semi-elliptical edge should be drilled in the two templates of the right-angle mold , the semi-elliptical side free-to-remove formwork and the semi-elliptical side square frame inner formwork are combined to form an elliptical steel pipe ventilation duct that passes through the elliptical holes of the two adjacent templates of the rib beam steel bars to form a rib beam ventilation duct; an appropriate amount of concrete is injected into the rib beam mold groove and the steel net, and the vibration device is started. Because the steel net laid in the outer formwork frame is not provided with a bonded concrete protective layer, in order to prevent the steel net from being exposed and vibrating, the steel net is slightly lifted to build a reinforced concrete rib beam and a thin bottom plate with a steel net; in the concrete protective layer of the steel bars at the bottom of the main rib beam, a steel net wider than the main rib beam is compounded to enhance the rigidity of the concrete protective layer at the bottom of the main rib beam and connect the thin bottom plate; when the concrete is in a solidified state, the square frame inner formwork is removed in time to obtain the groove formed by the reinforced concrete rib beam and the thin bottom plate with a steel net; Secondly: start the cement foaming slurry device, use chemical foaming and physical foaming technology to quantitatively inject the cement foaming slurry liquid into the grooves formed by the reinforced concrete rib beams and the thin bottom plate with steel mesh. The cement foaming slurry liquid quickly becomes foamed cement and seamlessly connects with the reinforced concrete rib beams and the thin bottom plate with steel mesh, achieving self-insulation, heat insulation, sound insulation, waterproofing and improving fire resistance level; if used as a dark air duct for fire protection and smoke exhaust, the foamed cement will wrap the dark air duct in the groove; at the same time, it also suppresses the existing steel mesh hollow cavity floor technology due to the existence of the steel mesh hollow cavity, and the steel mesh is poured when the concrete is poured. The hollow cavity must have water in the concrete and external rainwater factors that cause water to condense in the cavity. Drilling drainage measures must be taken for the cavity floor after pouring; when meeting the special seismic requirements of the structure, at least one corner of the thin bottom plate in the prefabricated floor component has no foamed cement formed on the upper end; in order to enhance the surface stiffness of the foamed cement, a layer of reinforced cement mortar or an additive to enhance the surface hardness is sprayed on the surface of the foamed cement before the mold is opened; the initially solidified rib beams, thin bottom plates and foamed cement are subjected to overall high-temperature and high-humidity steam curing, the outer formwork frame is removed, and the self-insulating floor components are obtained. The third step: transport the prepared non-dismantling column frame formwork, non-dismantling trough-shaped main beam formwork and self-insulating floor slab to the construction site; put the non-dismantling column frame formwork on the outside of the bound column reinforcement cage, and pour the reinforced concrete column first; install the main beam support, place a sleeper board larger than 0.6 meters wide on the top of the main beam support pipe, install the non-dismantling trough-shaped main beam formwork on the sleeper board, place the main beam reinforcement in the trough-shaped main beam formwork, and tie the main beam reinforcement into a shape with narrow upper main beam reinforcement and wide lower main beam reinforcement; divide the main beam stirrups into two groups, one group controls the narrow upper main beam reinforcement, and the other group controls the wide lower main beam reinforcement; The insulation floor components are placed on the top of the side plates of the grooved main beam formwork with N short angle steel pressure parts added, and the positive pressure of the self-insulation floor components is jointly borne by the side plates and the short angle steel pressure parts; when the assembled self-insulation floor components with two longitudinal side rib beams forming arc angles are assembled, the connectors installed at the ends of the transverse main rib beam reinforcements are connected with high-strength bolts, and then the upper flange plate reinforcements are arranged on the upper surface of the self-insulation floor components, and the upper flange plate reinforcements are anchored to the external rib beam stirrups and lifting rings, and concrete is poured after pre-embedded and concealed engineering inspections to build an assembled frame structure and self-insulation floor.
[0015] Figure 1 This is a structural diagram of a reinforced concrete assembled frame structure of the present invention.
[0016] Figure 2 This is a structural diagram of a reinforced concrete column without dismantling a column frame formwork according to the present invention.
[0017] Figure 3 This is a diagram of the formwork-free system for beams and floor slabs in the assembled frame structure of the present invention.
[0018] Figure 4 This is a structural diagram of the self-insulating floor component of the present invention.
[0019] Figure 1 This is an embodiment of the reinforced concrete assembled frame structure of the present invention. A non-disassembly column frame mold 102, a non-disassembly trough-shaped main beam mold 103 and a self-insulating floor slab component are transported to the construction site; the floor slab component is divided into a quadrilateral floor slab component 122 and a floor slab component 121 with only a thin bottom plate at the corner of the floor slab component but lacking self-insulating foamed cement; a thin-walled non-disassembly column frame mold 102 produced by special equipment for producing steel mesh is set on the outer edge of the tied column reinforcement cage 104, and the reinforced concrete column 101 is poured first; then a main beam support pipe 105 is set and installed, and a non-disassembly trough-shaped main beam mold 103 is placed on the top of the main beam support pipe 105, and narrow main beam reinforcements 107 and wide main beam reinforcements 106 are placed in the trough-shaped main beam mold, and stirrups 108 are arranged vertically to tie the upper narrow main beam reinforcements, and wide stirrups 109 are horizontally tied to the lower main beam reinforcements; two groups of stirrups control the upper narrow main beam reinforcements respectively. 107 and the lower wide main beam reinforcement 111; the self-insulating floor component is placed on the top 110 of the non-disassembly grooved main beam formwork side plate; in order to increase the pressure of the main beam formwork side plate, N load-bearing components are applied in the height direction of the main beam formwork side plate or a horse stool is added at the end of the assembled floor component; the connecting piece 131 installed on the end 112 of the transverse rib beam reinforcement is connected with a high-strength bolt, and the transverse main rib beam reinforcement passes through the connecting piece to make the arc edge 115 at the bottom of the adjacent floor components spliced, and then a group of through-length longitudinal reinforcement is added in the U-shaped groove spliced by the arc edge 115 to enhance the stiffness of the longitudinal rib beam; then the upper flange plate reinforcement 113 is arranged on the upper surface of the self-insulating floor component, and the upper flange plate reinforcement is anchored with the exposed rib beam stirrups and lifting rings, and concrete 114 is poured after pre-embedded and concealed engineering inspections to build a reinforced concrete assembled frame structure.
[0020] Figure 2 The present invention shows a reinforced concrete column structure diagram of a column frame formwork that does not require dismantling. A column reinforcement cage 104 is tied with stirrups 116, and a thin-walled column frame formwork 102 made of a steel mesh is mounted on the outer edge of the tied column reinforcement cage 104. In order to enhance the lateral pressure resistance of the thin-walled column frame formwork, small holes or buckles are reserved on the four side walls for external temporary reinforcement plates that resist lateral pressure, so that a temporary reinforcement plate that resists expansion force is fixed to the outside of the thin-walled column frame formwork. The reinforced concrete column 101 is cast first, and the reinforcement plate is removed in time after the concrete solidifies.
[0021] Figure 3The diagram of the non-dismantling formwork system of the beam and the floor slab in the assembled frame structure of the present invention is provided. The main beam support pipe is provided and the non-dismantling trough main beam mold is placed on the top of the trough main beam mold support pipe; in order to enhance the bottom strength of the main beam mold, a protection strip mold is first provided at the top of the support pipe, and the bottom plate of the trough main beam mold is placed on the protection strip mold for better effect; the main beam steel bar is placed in the trough main beam mold, and the upper narrow main beam steel bar is vertically arranged and tied with stirrups 108 to form a narrow main beam steel bar layer 103; the wide stirrups 108 are arranged vertically ... 09 Horizontally tie the lower main beam reinforcement to form a wide main beam reinforcement layer 106; in order to strengthen the two side plates of the trough-shaped main beam formwork to resist the pressure of the floor slab component 4, N load-bearing components 111 are applied in the height direction of the side plates of the main beam formwork or horse stools are added to the ends of the narrow rib reinforced concrete beams 107 of the assembled floor slab components; the self-insulating floor slab component 4 with curved edges 115 is placed on the top 110 of the side plates of the non-dismantling trough-shaped main beam formwork, and is combined into a non-dismantling formwork system for the beams and floor slabs of an assembled frame structure.
[0022] Figure 4 The present invention is a self-insulating floor component structure diagram, the self-insulating floor component 1 of the present invention is composed of rib beams 2, a thin bottom plate 4 composited with steel mesh 3 and concrete, a groove 5 formed by the rib beams and the thin bottom plate, a cement foam slurry 6, rib beam stirrups 7, a hanging ring 8 and a connecting piece 9; during implementation, the rib beam 2 includes a reinforced concrete longitudinal main rib beam 21 and two reinforced concrete longitudinal side rib beams 23 with outer arc angles 22, in order to enhance the corner bottom rigidity of the outer arc angle 22, the steel mesh extends into the corner bottom; reinforced concrete transverse main rib beams 24 and two reinforced concrete transverse end narrow rib beams 25; the bottom of the main rib beam is compounded with a steel mesh wider than the main rib beam; screw threads are tapped at both ends of the transverse main rib beam steel bars to form screw thread rods 26; the main rib beam steel bar stirrups are double-branch stirrups 7, the side rib beam steel bar stirrups are S-shaped stirrups, and the stirrups The reinforcement is higher than the rib beam by more than 15mm; an Ω-shaped steel bar eyelet 8 is arranged in the main rib beam, and the exposed height of the Ω-shaped steel bar eyelet is ≤50mm; the cement foam slurry is quantitatively injected into the groove formed by the rib beam and the thin bottom plate to foam, and forms a seamless composite with the rib beam and the thin bottom plate to achieve self-insulation, heat insulation, sound insulation, waterproofing and improved fire resistance; in order to meet the local force requirements during structural assembly and combination, there is no foamed cement on the thin bottom plate 4 of at least one corner 10 of the floor slab component on the beam side; to protect the lightweight foamed cement, a layer of reinforced cement mortar or an additive to enhance the surface hardness is sprayed on the surface of the foamed cement part of the floor slab component; before the assembled floor slab component leaves the factory, the two ends of the steel bars of the transverse main rib beam of the reinforced concrete with tapped screw patterns are inserted into the connecting pieces 9; the self-insulating floor slab component 1 is obtained.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims
1. A method for constructing a reinforced concrete assembled frame structure: comprising a non-disassembly column frame mold, a non-disassembly trough-shaped main beam mold and a self-insulating floor slab component; wherein: The self-insulating floor component is composed of rib beams, steel mesh, thin bottom plate, grooves formed by rib beams and thin bottom plate, cement foam slurry, rib beam stirrups, hanging rings and connectors; the rib beams include longitudinal main rib beams, longitudinal side rib beams, transverse main rib beams, and transverse narrow rib beams; The first step: make the required specifications and models of the prefabricated frame structure, the required trough-shaped main beam mold, and the various rib beam steel bars, rib beam stirrups, steel meshes, hanging rings and connectors required for the self-insulating floor; prepare the foaming equipment, cement and foaming agent required for the foamed cement; make the outer mold frame and square inner mold composed of the steel strip flat mold platform with vibration and the longitudinal outer mold and transverse outer mold required for the self-insulating floor components; Step 2: Make non-dismantling column frame molds, non-dismantling trough-shaped main beam molds and self-insulating floor components:
1. Make a non-disassembly column frame mold; the non-disassembly column frame mold is a thin-wall non-disassembly column frame mold, and small holes or fixtures are reserved on the four side walls of the column frame mold; 2. Make a disassembly-free trough-shaped main beam mold; the trough-shaped main beam mold is connected with angle steel, and N pressure-resistant parts are added to the side plates of the main beam mold along the height of the side plates; two sets of stirrups are set in the trough-shaped main beam mold to control the shape of the main beam reinforcement binding; 3. To make self-insulating floor components, an outer mold is installed on a steel strip flat mold platform with vibration to form an outer mold frame; a steel mesh, rib beam steel bars and rib beam stirrups are laid in the outer mold frame and tied, and the rib beam stirrups are 20mm higher than the rib beam steel bars; an Ω-shaped hanging ring is set in the transverse main rib beam steel bars; a square frame inner mold is installed in the grid formed by the cross-shaped rib beam steel bars to form a rib beam mold groove with rib beam steel bars; an appropriate amount of concrete is injected into the rib beam mold groove and the steel mesh to form a reinforced concrete rib beam and a thin bottom plate with a steel mesh; when the concrete is in the initial setting state, the square frame inner mold is removed in time to form a groove formed by the reinforced concrete rib beam and the thin bottom plate with a steel mesh; the configured foamed cement liquid is quantitatively injected into the groove for rapid foaming, and high temperature and high humidity curing is performed, the outer mold frame is removed, and a connector is installed at the end of the transverse main rib beam steel bars to obtain a self-insulating floor component; The third step: transport the manufactured non-dismantling column frame formwork, non-dismantling trough-shaped main beam formwork and self-insulating floor slab components to the construction site; the column frame formwork is installed outside the tied column reinforcement cage, and the reinforced concrete column is poured first; the main beam support is installed, and a sleeper with a width greater than 0.6 meters is placed on the top of the main beam support tube, and the main beam reinforcement is placed and tied after the trough-shaped main beam formwork is installed on the sleeper; the main beam reinforcement uses two sets of stirrups to control the shape of the main beam reinforcement narrowing at the upper part and widening at the lower bottom, and the self-insulating floor slab components are placed on the upper end of the side plate of the non-dismantling trough-shaped main beam formwork; the connector installed at the end of the transverse main rib beam reinforcement is quickly connected with high-strength bolts, and then the upper flange plate structural reinforcement is arranged on the upper surface of the self-insulating floor slab component; the structural reinforcement is anchored with the rib beam stirrups and Ω-shaped lifting rings, and then concrete is poured to build a reinforced concrete assembled frame structure.
2. A method for constructing a reinforced concrete assembled frame structure as claimed in claim 1, characterized in that The bottom area of the self-insulating floor component is greater than 3% of the surface area of the floor.
3. A method for constructing a reinforced concrete assembled frame structure as claimed in claim 1, characterized in that The connecting piece is a steel plate component, a channel steel component or an angle steel component; the connecting piece is arranged at the two end portions of the steel bars of the reinforced concrete transverse rib beam.
4. A method for constructing a reinforced concrete assembled frame structure as claimed in claim 1, characterized in that Among the four right angles of the assembled floor component, at least one angle has no foamed cement formed on the upper end of the thin bottom plate.
5. A method for constructing a reinforced concrete assembled frame structure as claimed in claim 1, characterized in that The two ends of the steel bars of the reinforced concrete transverse rib beam are tapped with screw threads to form screw thread rods; the screw thread rods pass through the connecting pieces and are fitted with nuts.
6. A method for constructing a reinforced concrete assembled frame structure as claimed in claim 1, characterized in that The upper surface of the assembled floor component is sprayed with reinforced cement mortar or reinforcing liquid.
7. A method for constructing a reinforced concrete assembled frame structure as claimed in claim 1, characterized in that The column frame mold is an aluminum column frame mold.
