Prefabricated building frame structure component and construction method thereof

Abstract

The present invention discloses an assembled building frame structure component and a construction method thereof, wherein the frame structure comprises one or more layers of mutually connected frame bodies, the intersections between each layer of frame bodies are connected by plug-in point components, the frame body of each layer comprises columns, beams, interlayer floors and node components connected by the intersections of the columns and beams, the interlayer floors are laid in the spaces between the intersections of the beams and the columns of each layer, the inflection points on the columns of the upper layer are located in the middle of the columns, the inflection points on the columns of the bottom layer are located at 2 / 3 of the height of the columns, the inflection points on the beams are located at both ends of the beams, and the distance between the inflection points on the beams and the ends of the beams is 1.5 to 2 times the cross-sectional height of the beams. The present invention improves the production and assembly efficiency of building components, eliminates secondary pouring or wet grouting operations, sets the connection nodes at the inflection points of beams and columns, improves the force safety and connection reliability, saves the design and template production costs, and provides construction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of building structures, and in particular to assembled building frame structural components and construction methods thereof. Background Art

[0002] Prefabricated buildings refer to buildings assembled on site using prefabricated components. Prefabricated buildings began to attract people's interest in the early 20th century and were finally realized in the 1960s. Due to the fast construction speed and low production cost of prefabricated buildings, they have been rapidly promoted around the world. The advantages of this type of building are fast construction speed, less restrictions on climatic conditions, labor saving and improved building quality. However, at present, the production method of prefabricated multi-story and high-rise buildings in China is: in the factory, the basic components of the building structure are first designed and produced, anchor steel bars are reserved, and they are transported to the construction site for temporary support and assembly. The components are connected and anchored by secondary pouring of concrete and grouting, and the components are assembled into buildings. The secondary pouring connection method is currently the main connection method for prefabricated building components, and this connection method does not completely eliminate the wet operation method of on-site construction. The construction speed is affected by the hardening speed of concrete, and still requires the assistance of traditional concrete pouring equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a prefabricated building frame structure component and a construction method thereof. The frame structure and the construction method of the present invention greatly improve the efficiency of building component production and assembly and installation. In order to achieve the above purpose, the present invention adopts the following technical effects:

[0004] According to one aspect of the present invention, there is provided a prefabricated building frame structure component, the frame structure comprises one or more layers of mutually connected frame bodies, the intersections of each layer of frame bodies are connected by plug-in point components, the frame bodies of each layer comprise columns, beams, interlayer floors and node components where the columns and beams intersect, the interlayer floors are embedded and laid in the space between the intersections of the beams and the columns of each layer, the inflection points on the columns of the upper layer are located in the middle of the columns, the inflection points on the columns of the bottom layer are located at 2 / 3 of the height of the columns, the inflection points on the beams are located at both ends of the beams, and the distance between the inflection points on the beams and the ends of the beams is 1.5 to 2 times the cross-sectional height of the beams; the plug-in point components comprise an upper plug-in point component and a lower plug-in point component, the upper plug-in point component and the lower plug-in point component are respectively fixed at the upper and lower ends of the columns, and the lower ends of the columns of the upper layer are plugged and fixed to the upper plug-in point components at the upper ends of the columns of the lower layer through the lower plug-in point components.

[0005] In the above solution, it is further preferred that the columns and the beams are connected via two, three, four or five node members.

[0006] The above scheme is further preferred, wherein the column is composed of a precast concrete column, a longitudinal steel bar column and longitudinal column stirrups uniformly fixed longitudinally along the periphery of the longitudinal steel bar column, the longitudinal steel bar column runs through the precast concrete column, and the end outer walls of the precast concrete columns at the upper and lower ends of the longitudinal steel bar column are respectively fixed with the upper plug-in point component and the lower plug-in point component, the crossbeam comprises a precast concrete beam, a beam reinforcement column and beam stirrups uniformly fixed transversely along the periphery of the beam reinforcement column, the beam reinforcement column runs through the precast concrete beam, and the outside of the precast concrete beams at both ends of the beam reinforcement column are connected to the longitudinal steel bar column through node components.

[0007] The above scheme is further preferred that the lower connection point component includes a lower pad, a lower rectangular cylindrical edging steel plate and a rectangular cylindrical edging splicing steel plate, the lower end of the longitudinal steel bar column is welded to the lower pad, the lower end of the longitudinal steel bar column is surrounded and fixed by the lower rectangular cylindrical edging steel plate, and the edge of the lower pad is flush with the edge of the lower end cross-sectional area of ​​the lower rectangular cylindrical edging steel plate, the upper end inner wall of the rectangular cylindrical edging splicing steel plate is fixedly sleeved on the outer wall of the lower end of the lower rectangular cylindrical edging steel plate, the upper connection point component is composed of an upper rectangular cylindrical edging steel plate wrapped and fixed to the upper end of the longitudinal steel bar column, the upper rectangular cylindrical edging steel plate is spliced ​​in the rectangular cylindrical edging splicing steel plate, and the upper end of the lower longitudinal steel bar column and the lower end of the upper longitudinal steel bar column are spliced ​​by the upper rectangular cylindrical edging steel plate and the rectangular cylindrical edging splicing steel plate.

[0008] The above scheme is further preferred in that first bolt holes are respectively arranged on the side walls of the upper rectangular cylindrical edging steel plate and the side walls of the rectangular cylindrical edging plug-in steel plate, and steel bar through holes are evenly distributed on the plate surface of the lower pad, and the lower end portion of the longitudinal steel bar column passes through the steel bar through holes and is welded to the lower pad.

[0009] The above scheme is further preferred in that both ends of the longitudinal reinforcement column are exposed outside the upper and lower ends of the precast concrete column, and the left and right ends of the beam reinforcement column are exposed outside the two ends of the precast concrete beam.

[0010] The above scheme is further preferred, that the two ends of the longitudinal steel bar column are exposed outside the upper and lower ends of the precast concrete column, the left and right ends of the beam reinforcement column are exposed outside the two ends of the precast concrete beam, the upper and lower ends of the longitudinal steel bar column extend from the upper and lower ends of the precast concrete column and are respectively fixedly connected to the upper plug-in point component and the lower plug-in point component, and the two ends of the beam reinforcement column are connected to the intersection of the longitudinal steel bar column through a node component.

[0011] The above scheme is further preferred, wherein the node component includes a beam reinforcement edging steel plate, a first U-shaped groove edging steel plate and a second U-shaped groove edging steel plate, the beam reinforcement edging steel plate is fixedly sleeved on the end of the beam reinforcement transition column, one end of the first U-shaped groove edging steel plate is fixedly sleeved on the outer wall of the beam reinforcement edging steel plate, the two ends of the beam reinforcement column are respectively fixedly sleeved in the second U-shaped groove edging steel plate, and the two ends of the beam reinforcement column are respectively fixed in the other end of the first U-shaped groove edging steel plate through the second U-shaped groove edging steel plate.

[0012] The above scheme is further preferred in that L-shaped notches are cut out horizontally and vertically at the four corners of the interlayer floor slab, so that the four corners of the interlayer floor slab have L-shaped notch transitions, making it easy to buckle on the columns.

[0013] According to another aspect of the present invention, a construction method of an assembled building frame structure member is provided, the construction method comprising the following steps:

[0014] Step 1: Design according to the construction requirements and building material selection of the building, select the sizes of longitudinal steel bars, beam bars and stirrups according to the floor height, floor width, the size of each floor column, the size of each floor beam and the design requirements of the inflection point of each floor, and make the inflection point on the bottom floor column located at 2 / 3 of the height of the column, the inflection point on the upper floor column located at the middle of the column, the inflection point on the beam located at both ends of the beam, and the distance between the inflection point on the beam and the end of the beam is 1.5 to 2 times the height of the cross section of the beam;

[0015] Step 2, the longitudinal reinforcement column and the beam reinforcement column are welded with corresponding stirrups to prefabricate and produce a reinforcement cage skeleton, the lower rectangular tubular edging steel plate, the lower pad and the rectangular tubular edging plug-in steel plate are inserted and welded at the bottom end of the reinforcement cage skeleton formed by the longitudinal reinforcement column, and the upper rectangular tubular edging steel plate is inserted and welded at the top end of the reinforcement cage skeleton formed by the longitudinal reinforcement column, so that the bottom end of the reinforcement cage skeleton formed by the longitudinal reinforcement column is inserted into the top end of the reinforcement cage skeleton formed by the longitudinal reinforcement column of the lower layer, and a beam reinforcement transition column is arranged on the side of the reinforcement cage skeleton formed by the longitudinal reinforcement column, and the beam reinforcement edging steel plate and the first U-shaped groove edging steel plate are sequentially installed at both ends of the reinforcement cage skeleton formed by the beam reinforcement column, the lower pad is located between the lower end of the lower rectangular tubular edging steel plate and the top end of the rectangular tubular edging plug-in steel plate, and the lower pad is welded to the inner side of the lower end of the lower rectangular tubular edging steel plate or to the inner side of the rectangular tubular edging plug-in steel plate, and the upper rectangular tubular edging steel plate is plugged into the rectangular tubular edging plug-in steel plate;

[0016] Step 3: transport the prefabricated steel cage frame to the construction site, install the bottom steel cage frame components from bottom to top, and connect the steel cage frame components formed by the longitudinal steel bars at the inflection point horizontally and vertically to the steel cage frame components formed by the longitudinal steel bars to form an assembled frame building structure;

[0017] Step 4, after the above-mentioned steel cage skeleton components are placed in the concrete pouring template and the pouring is completed, the upper rectangular cylindrical edging steel plate, the rectangular cylindrical edging splicing steel plate and the lower rectangular cylindrical edging steel plate are covered and fixed on the end outer wall of the precast concrete column and the end outer wall of the precast concrete beam of the beam reinforcement edging steel plate and the first U-shaped groove edging steel plate. When the upper longitudinal steel bar column is transferred to the top of the lower longitudinal steel bar column, the rectangular cylindrical edging splicing steel plate on the lower end of the upper longitudinal steel bar column is inserted into the upper rectangular cylindrical edging steel plate at the top of the lower longitudinal steel bar column, and the upper rectangular cylindrical edging steel plate is sleeved in the rectangular cylindrical edging splicing steel plate and fixed by bolts or welding, and it is placed in the concrete pouring template to form the upper frame structure.

[0018] In summary, since the present invention adopts the above technical solution, the present invention has the following technical effects:

[0019] (1) The main load-bearing beams and columns of the frame structure of the present invention are split into components at the part where the bending is the smallest (the inflection point), which ensures the connection reliability of the structure. The pre-embedded connectors at the ends of the concrete components can be used to combine different internal spaces of the building according to the length of the components, thereby facilitating the modular production of components, avoiding repeated design and production of templates and nodes, saving design costs and template production costs, simplifying the construction process, and improving construction efficiency.

[0020] (2) The frame structure of the present invention avoids the wet assembly connection method of complex connection such as grouting, greatly improving the production and assembly efficiency of building components, and can completely eliminate the current secondary concrete pouring or grouting wet operation on site of prefabricated building components. The connection nodes are set at the inflection points of beams and columns, greatly improving the force safety and connection reliability of the prefabricated frame building structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the assembled building frame structural member of the present invention;

[0022] Figure 2 It is a schematic diagram of the inflection point structure of the assembled building frame structural member of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the interlayer floor slab of the present invention;

[0024] Figure 4 It is a structural schematic diagram of a longitudinal steel bar column of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure between the longitudinal reinforcement column and the beam reinforcement column of the present invention.

[0026] Figure 6 It is a schematic diagram of the connection structure of the beam-column double-joint node of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure of the beam-column triple joint of the present invention;

[0028] Figure 8 It is a schematic diagram of the connection structure of the quadruple node of the present invention.

[0029] Fig. 9 It is a structural schematic diagram of the independent coupling beam of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0031] like Figure 1 and Figure 2 As shown, according to the prefabricated building frame structure component of the present invention, the frame structure includes one or more layers of mutually connected frame bodies 1, and the intersections between the frame bodies 1 of each layer are connected by plug-in point components. The frame body 1 of each layer includes columns 100, beams 200, interlayer floor slabs 300, and node components 40 where the columns 100 and the beams 200 intersect and connect. The interlayer floor slabs 300 are embedded and laid in the space between the intersections of the beams 200 and the columns 100 of each layer, and L-shaped notches 301 are cut out horizontally and vertically at the four corners of the interlayer floor slabs 300, as shown in FIG. Figure 3 As shown, the L-shaped notches set at the four corners of the interlayer floor 300 are engaged with the four corners of the column 100, the inflection point A on the column 100 of the upper layer is located in the middle of the column 100, the inflection point B on the column 100 of the bottom layer is located at 2 / 3 of the height of the column 100, the inflection point C on the beam 200 is located at both ends of the beam 200, and the distance between the inflection point on the beam 200 and the end of the beam 200 is 1.5 to 2 times the cross-sectional height of the beam 200, and the cross-sectional height of the beam 200 is 300 mm or more. On the other hand, the columns 100 and the beams 200 of the frame body 1 are located at the position (inflection point) where the internal force and bending moment of the components are the smallest to improve the apparent seismic resistance level. The columns 100 and the beams 200 are not easily disconnected in the core area of ​​the node, avoiding the connection of steel bars at nodes with complex stresses. Instead, they are connected at the inflection points of the columns and the inflection points of the beams 200 where the bending moment is the smallest. The steel plates are welded at the ends of the stressed steel bars and the nodes, which greatly improves the integrity and seismic resistance of the structure, reduces the use of stirrups, avoids bending and anchoring of beam steel bars, and solves the problem of crowded steel bars in the node area.

[0032] In the present invention, combined with Figure 1 , Figure 4 and Figure 5The plug-in point component includes an upper plug-in point component 2 and a lower plug-in point component 3, and the upper plug-in point component 2 and the lower plug-in point component 3 are respectively fixed at the upper and lower ends of the column 100, and the lower end of the upper column 100 is plugged and fixed to the upper plug-in point component 2 at the upper end of the lower column 100 through the lower plug-in point component 3. The column 100 is composed of a precast concrete column, a longitudinal steel bar column 101, and longitudinal column stirrups 102 uniformly fixed along the outer periphery of the longitudinal steel bar column 101. The longitudinal steel bar column 101 runs through the precast concrete column, and the end outer walls of the precast concrete columns at the upper and lower ends of the longitudinal steel bar column 101 are respectively fixed with the upper plug-in point component 2 and the lower plug-in point component 3, and the crossbeam 200 includes a precast concrete beam, a beam reinforcement column 201 and beam stirrups 202 uniformly fixed transversely along the periphery of the beam reinforcement column 201, the beam reinforcement column 201 runs through the precast concrete beam, and the exterior of the precast concrete beams at both ends of the beam reinforcement column 201 is connected to the longitudinal reinforcement column 101 through a node member 40; the lower plug-in point member 3 includes a lower pad 3a, a lower rectangular cylindrical edging steel plate 3b and a rectangular cylindrical edging plug-in steel plate 3c, the lower end of the longitudinal reinforcement column 101 is welded to the lower pad 3a, or the edge of the lower pad 3a is welded to the inner wall of the upper end opening of the lower rectangular cylindrical edging steel plate 3b, and the lower end of the longitudinal reinforcement column 101 is welded from the lower pad The steel bar perforation 3d on one side of 3a passes through and is flush with the other side surface of the lower pad 3a, so that the ends of the beam reinforcement column 201 can be arranged and supported through the lower pad 3a to form a regular steel cage. After the beam reinforcement column 201 is welded, it is placed in the template (the internal size of the template is larger than the size of the beam reinforcement column 201 and the lower pad 3a) to cast the overall column concrete component. The lower end of the longitudinal reinforcement column 101 is surrounded and fixed by the lower rectangular cylindrical edging steel plate 3b, and the edge of the lower pad 3a is flush with the edge of the lower end section of the lower rectangular cylindrical edging steel plate 3b. The upper inner wall of the rectangular cylindrical edging plug-in steel plate 3c is fixedly sleeved on the lower rectangular cylindrical edging steel plate 3c. On the outer wall of the lower end of the edge steel plate 3b, the upper plug-in point component 2 is composed of an upper rectangular cylindrical edging steel plate 20 that is covered and fixed on the upper end of the longitudinal steel bar column 101, and the upper rectangular cylindrical edging steel plate 20 is inserted into the rectangular cylindrical edging plug-in steel plate 3c. The upper end of the longitudinal steel bar column 101 of the lower layer and the lower end of the longitudinal steel bar column 101 of the upper layer are plugged through the upper rectangular cylindrical edging steel plate 20 and the rectangular cylindrical edging plug-in steel plate 3c. The upper rectangular cylindrical edging steel plate 20, the lower rectangular cylindrical edging steel plate 3b and the rectangular cylindrical edging plug-in steel plate 3c are all rectangular cylinders surrounded by a single steel plate, so they are designed according to the size of the longitudinal steel bar column 101 and the beam reinforcement column 201.A first bolt hole 21 is provided on the side wall of the upper rectangular cylindrical edging steel plate 20. When the upper longitudinal steel bar column 101 is transported to the top of the lower longitudinal steel bar column 101, the rectangular cylindrical edging splicing steel plate 3c on the lower end of the upper longitudinal steel bar column 101 is inserted into the upper rectangular cylindrical edging steel plate 20 at the top of the lower longitudinal steel bar column 101. Since the inner wall of the rectangular cylindrical edging splicing steel plate 3c and the mouth edge of the lower rectangular cylindrical edging steel plate 3b form a supporting step, the mouth edge of the upper rectangular cylindrical edging steel plate 20 is supported on the supporting step formed by the inner wall of the rectangular cylindrical edging splicing steel plate 3c and the mouth edge of the lower rectangular cylindrical edging steel plate 3b. A second bolt hole 3e is provided on the side wall of the rectangular cylindrical edging splicing steel plate 3c, and the upper and lower rectangular cylindrical edging splicing steel plates 3c and the upper rectangular cylindrical edging steel plate 20 are fixedly connected by mutually matching bolts passing through the first bolt hole 21 and the second bolt hole 3e. ;

[0033] In the present invention, combined with Figure 1 , Figure 4 and Figure 5, one or more sections of beam reinforcement transition columns 103 extend horizontally on the longitudinal reinforcement column 101, and the two ends of the beam reinforcement column 201 are connected to the longitudinal reinforcement column 101 in turn through node components 40 and the beam reinforcement transition columns 103; each node component 40 is equivalent to a node, and the node component 40 includes a beam reinforcement edge steel plate 400, a first U-shaped groove edge steel plate 401 and a second U-shaped groove edge steel plate 402, the beam reinforcement edge steel plate 400 is fixedly sleeved on the end of the beam reinforcement transition column 103, one end of the first U-shaped groove edge steel plate 401 is fixedly sleeved on the outer wall of the beam reinforcement edge steel plate 400, and the two ends of the beam reinforcement column 201 are respectively fixedly sleeved in the second U-shaped groove edge steel plate 402, and the two ends of the beam reinforcement column 201 are respectively fixed in the other end of the first U-shaped groove edge steel plate 401 through the second U-shaped groove edge steel plate 402, and the frame member is configured according to the reinforcement size, layer spacing, inflection point, steel node, etc. According to the calculation or template design results, beams, plates, columns and other components are prefabricated and produced, and the prefabricated components are transported to the site. The components are directly installed on the site and anchored with bolts. After the frame structure is installed, the main body of the building is constructed; after the vertical installation of the longitudinal reinforcement column 101 of each layer is completed, the beam reinforcement edge steel plate 400 and the first U-shaped groove edge steel plate 401 are installed in sequence at the end of the beam reinforcement transition column 103 of the longitudinal reinforcement column 101, and the second U-shaped groove edge steel plate 402 is respectively installed at both ends of the beam reinforcement column 201, and then the beam reinforcement column 201 is horizontally installed on the corresponding adjacent longitudinal reinforcement column 101, and the second U-shaped groove edge steel plate 402 at both ends of the beam reinforcement column 201 is placed in the first U-shaped groove edge steel plate 401, and bolts are used to pass through the third bolt holes 403 respectively set on the side walls of the first U-shaped groove edge steel plate 401 and the side walls of the second U-shaped groove edge steel plate 402 for stable connection (welding). To this end, after the longitudinal reinforcement column 101 and the beam reinforcement column 201 are placed in the concrete casting template and cast, the upper rectangular cylindrical edging steel plate 20, the rectangular cylindrical edging plug-in steel plate 3c, and the lower rectangular cylindrical edging steel plate 3b are covered and fixed on the outer wall of the end of the precast concrete column, as well as the beam reinforcement edging steel plate 400 and the first U-shaped groove edging steel plate 401. The outer wall of the end of the precast concrete beam, the steel plate between the columns 100 between the upper and lower layers and the steel plate between the beams through the steel plate at the end of the precast concrete column can transmit force. Therefore, according to the internal force distribution of the overall structure, the nodes can be connected to the beams and columns by steel structures, avoiding the complicated processing procedures of the force and structural conditions at the construction site.

[0034] As another embodiment of the present invention, the two ends of the longitudinal steel bar column 101 are exposed outside the upper and lower ends of the precast concrete column, and the left and right ends of the beam reinforcement column 201 are exposed outside the two ends of the precast concrete beam. The upper and lower ends of the longitudinal steel bar column 101 extend from the upper and lower ends of the precast concrete column and are respectively fixedly connected to the upper plug-in point component 2 and the lower plug-in point component 3. The two ends of the beam reinforcement column 201 are connected to the intersection of the longitudinal steel bar column 101 through a node component 40. Since the two ends of the longitudinal steel bar column 101 are exposed outside the upper and lower ends of the precast concrete column, and the left and right ends of the beam reinforcement column 201 are exposed outside the two ends of the precast concrete beam, for this reason, the longitudinal steel bar column 101 and the beam reinforcement column 201 are placed in the concrete pouring. After the pouring in the formwork is completed, the upper rectangular cylindrical edging steel plate 20, the rectangular cylindrical edging plug-in steel plate 3c, and the lower rectangular cylindrical edging steel plate 3b are used to cover the part of the longitudinal steel bar column 101 exposed at the end of the precast concrete column, as well as the part of the longitudinal steel bar column 101 at the end of the precast concrete beam of the beam reinforcement edging steel plate 400 and the first U-shaped groove edging steel plate 401, so that the columns 100 between the upper and lower layers can transmit force through the steel plates and the longitudinal steel bar columns 101, and the beams can transmit force through the steel plates and the beam reinforcement columns 201 at the ends of the precast concrete columns. Therefore, according to the internal force distribution of the overall structure, the nodes can be connected to the beams and columns by steel structures, thereby avoiding the complicated processing procedures for the force and structural conditions at the construction site.

[0035] In the present invention, before pouring concrete, the ends of the force-bearing bars of the steel skeleton are first welded to the steel plates on the inner side of the steel package. Figure 1 and 5 As shown, concrete columns 100 are then cast. After the strength of the cast concrete columns 100 is maintained to meet the standards, they can be assembled into a beam 200 frame structure layer using bolts, and steel plates (upper plug-in point components 2 and lower plug-in point components 3) are set at the ends of the nodes and the longitudinal reinforcement columns 100 of the precast concrete columns, and then the prefabricated floor panels are installed in the frame formed by the beams and columns, and the main frame structure is formed by stacking them layer by layer. The beams 200 between the columns 100 are connected by two, three or four node components 40 to divide the overall frame into independent concrete components. Each node component 40 is an inflection point. Since the connection between the beam and the column is independently divided into a double node ( Figure 6 As shown), triple node ( Figure 7 As shown), quadruple nodes ( Figure 8 shown) and independent beams ( Fig. 9 ), the lower plug-in point components 3 of each column 100 are respectively inflection points, so that the inflection points can be independently prefabricated into precast concrete components (PC for short), such as Figure 2 As shown. In special cases, there can be five or more connections. Figure 6In the example shown in FIG. 1 , the edge beam 200 is L-shaped and intersects the column 100 perpendicularly at the floor level; at the triple joint ( Figure 7 As shown in FIG. 1 , beams 200 are respectively arranged on three sides of the column 100 in the middle of the edge. The beams 200 on the three sides are T-shaped and intersect the column 100 vertically at the floor level. The four-joint node ( Figure 8 The cross beam 200 in the figure is cross-shaped and intersects the column 100 vertically at the floor level. Therefore, when designing the reinforcement in each independent concrete component, the node and the connecting beam can be connected by steel structure according to the internal force distribution of the overall structure. Fig. 9 As shown, a steel plate is provided at the end of the concrete precast beam of the node and the cross beam (the second U-shaped groove edge steel plate 402), thereby forming a prefabricated steel structure connection node (PS for short). Therefore, the present invention avoids processing the building frame with complex stress and structure conditions at the construction site, and instead places the node of the assembled frame structure at the inflection point with small internal force and simple stress conditions, which can improve the engineering quality of the assembled building to a certain extent, and can reduce the workload and difficulty of the construction site to a certain extent. It has a reasonable structure, a large assembly construction operation space, simple connection, fast construction speed, and an economical and reliable assembled frame building structure.

[0036] In the present invention, combined with Figures 1 to 5, the construction process of the prefabricated building frame structure of the present invention is further described: First, the design is carried out according to the construction requirements of the building and the selection of building materials. According to the floor height, floor width, the size of each floor column 100, the size of each floor beam 200 and the design requirements of the inflection point of each floor, the size of the longitudinal steel bar column 101, the beam reinforcement column 201 and the stirrup are selected, and the inflection point on the bottom floor column 100 is located at 2 / 3 of the height of the column 100, the inflection point on the upper floor column 100 is located in the middle of the column 100, the inflection point on the beam 200 is located at both ends of the beam 200, and the distance between the inflection point on the beam 200 and the end of the beam 200 is 1.5 to 2 times; secondly, the longitudinal steel bar column 101 and the beam reinforcement column 201 are welded with corresponding stirrups to prefabricate and produce a steel cage skeleton, the lower rectangular cylindrical edging steel plate 3b, the lower pad 3a and the rectangular cylindrical edging plug-in steel plate 3c are inserted and welded at the bottom end of the steel cage skeleton formed by the longitudinal steel bar column 101, and the upper rectangular cylindrical edging steel plate 20 is inserted and welded at the top end of the steel cage skeleton formed by the longitudinal steel bar column 101, so that the bottom end of the steel cage skeleton formed by the longitudinal steel bar column 101 is inserted into the top end of the steel cage skeleton formed by the longitudinal steel bar column 101, and the beam reinforcement transition column 103 is set on the side of the steel cage skeleton formed by the longitudinal steel bar column 101, and the two sides of the steel cage skeleton formed by the beam reinforcement column 201 are connected. The beam reinforcement edging steel plate 400 and the first U-shaped groove edging steel plate 401 are installed in sequence at the ends, and the lower pad 3a is located between the lower end of the lower rectangular cylindrical edging steel plate 3b and the top end of the rectangular cylindrical edging plug-in steel plate 3c, and the lower pad 3a is welded to the inner side of the lower end of the lower rectangular cylindrical edging steel plate 3b or to the inner side of the rectangular cylindrical edging plug-in steel plate 3c. For this purpose, a lower pad 3a is arranged on the inner side of the lower end of the lower rectangular cylindrical edging steel plate 3b or a lower pad 3a is arranged on the inner side of the rectangular cylindrical edging plug-in steel plate 3c, and the upper rectangular cylindrical edging steel plate 20 is plugged into the rectangular cylindrical edging plug-in steel plate 3c, so that the top end of the upper rectangular cylindrical edging steel plate 20 of the lower layer is inserted into the upper rectangular cylindrical edging plug-in steel When the steel cage frame is in the plate 3c, the lower pad 3a is cushioned on the top of the upper rectangular cylindrical edging steel plate 20, thereby improving the bearing capacity of the steel cage skeleton formed by the longitudinal steel bar column 101; again, the prefabricated steel cage skeleton is transported to the construction site, and the bottom steel cage skeleton components and the steel cage skeleton components above the bottom are installed from bottom to top, and the steel cage skeleton components formed by the longitudinal steel bar column 101 are horizontally and vertically connected to the steel cage skeleton components formed by the longitudinal steel bar column 101 at the inflection point to form an assembled frame building structure; finally, the above-mentioned steel cage skeleton components are placed in the concrete pouring template and poured after the upper rectangular cylindrical edging steel plate 20, the rectangular cylindrical edging plug-in steel plate 3c, and the lower rectangular cylindrical The edge steel plate 3b is covered and fixed on the outer wall of the end of the concrete precast column and the outer wall of the end of the beam reinforcement edge steel plate 400 and the first U-shaped groove edge steel plate 401. When the upper longitudinal steel bar column 101 is transferred to the top of the lower longitudinal steel bar column 101, the rectangular cylindrical edge plugging steel plate 3c on the lower end of the upper longitudinal steel bar column 101 is inserted into the upper rectangular cylindrical edge steel plate 20 at the top of the lower longitudinal steel bar column 101 (the top of the steel cage skeleton member formed by the longitudinal steel bar column 101), and the upper rectangular cylindrical edge steel plate 20 is sleeved in the rectangular cylindrical edge plugging steel plate 3c and fixed by bolts or welding, and is placed in the concrete casting template to cast to form the upper frame structure.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Prefabricated building frame structural member, characterized by: The frame structure comprises one or more layers of mutually connected frame bodies (1), the intersections between the frame bodies (1) of each layer are connected by plug-in point components, the frame bodies (1) of each layer comprise columns (100), beams (200), interlayer slabs (300), and node components (40) at the intersections of the columns (100) and the beams (200), the interlayer slabs (300) are embedded and laid in the space between the intersections of the beams (200) and the columns (100) of each layer, the inflection points on the columns (100) of the upper layer are located at the middle of the columns (100), and the inflection points on the columns (100) of the lower layer are located at the middle of the columns (100), and the inflection points on the columns (100) of the lower layer are located at the middle of the columns The crossbeam (200) is 2 / 3 of the height of the crossbeam (100), the inflection point on the crossbeam (200) is located at both ends of the crossbeam (200), and the distance between the inflection point on the crossbeam (200) and the end of the crossbeam (200) is 1.5 to 2 times the cross-sectional height of the crossbeam (200); the plug-in point component comprises an upper plug-in point component (2) and a lower plug-in point component (3), and the upper plug-in point component (2) and the lower plug-in point component (3) are respectively fixed at the upper and lower ends of the column (100), and the lower end of the upper column (100) is plugged and fixed to the upper plug-in point component (2) at the upper end of the lower column (100) through the lower plug-in point component (3); The column (100) is composed of a precast concrete column, a longitudinal steel bar column (101), and longitudinal column stirrups (102) uniformly fixed along the periphery of the longitudinal steel bar column (101); the longitudinal steel bar column (101) runs through the precast concrete column, and the upper plug-in point component (2) and the lower plug-in point component (3) are respectively fixed to the end outer walls of the precast concrete columns at the upper and lower ends of the longitudinal steel bar column (101); the cross beam (200) comprises a precast concrete beam, a beam reinforcement column (201), and beam stirrups (202) uniformly fixed along the periphery of the beam reinforcement column (201); the beam reinforcement column (201) runs through the precast concrete beam, and the outside of the precast concrete beam at both ends of the beam reinforcement column (201) is connected to the longitudinal steel bar column (101) through a node component (40); the column (100) and the cross beam (200) are connected through two, three, four or five node components (40); The two ends of the longitudinal reinforcement column (101) are exposed outside the upper and lower ends of the precast concrete column, and the left and right ends of the beam reinforcement column (201) are exposed outside the two ends of the precast concrete beam. The upper and lower ends of the longitudinal reinforcement column (101) extend from the upper and lower ends of the precast concrete column and are respectively fixedly connected to the upper plug-in point component (2) and the lower plug-in point component (3). The two ends of the beam reinforcement column (201) are connected to the longitudinal reinforcement column (101) through a node component (40) at the intersection. One or more beam reinforcement transition columns (103) extend horizontally from the longitudinal reinforcement column (101), and the two ends of the beam reinforcement column (201) are connected to the longitudinal reinforcement column (101) through the node component (40) and the beam reinforcement transition column (103) in sequence. The node component (40) comprises a beam reinforcement edge steel plate (400), a first U-shaped groove edge steel plate (401) and a second U-shaped groove edge steel plate (402), wherein the beam reinforcement edge steel plate (400) is fixedly sleeved on the end of the beam reinforcement transition column (103), one end of the first U-shaped groove edge steel plate (401) is fixedly sleeved on the outer wall of the beam reinforcement edge steel plate (400), and the two ends of the beam reinforcement column (201) are respectively fixedly sleeved in the second U-shaped groove edge steel plate (402), and the two ends of the beam reinforcement column (201) are respectively fixed in the other end of the first U-shaped groove edge steel plate (401) through the second U-shaped groove edge steel plate (402); The lower plug-in point component (3) comprises a lower pad (3a), a lower rectangular cylindrical edging steel plate (3b) and a rectangular cylindrical edging plug-in steel plate (3c); the lower end of the longitudinal steel bar column (101) is welded to the lower pad (3a); the lower end of the longitudinal steel bar column (101) is surrounded and fixed by the lower rectangular cylindrical edging steel plate (3b); the edge of the lower pad (3a) is flush with the edge of the lower end cross-sectional area of ​​the lower rectangular cylindrical edging steel plate (3b); the upper end inner wall of the rectangular cylindrical edging plug-in steel plate (3c) is fixedly sleeved on the outer wall of the lower end of the lower rectangular cylindrical edging steel plate (3b); the upper plug-in point component (2) is composed of an upper rectangular cylindrical edging steel plate (3c) that is covered and fixed to the upper end of the longitudinal steel bar column (101); The invention is composed of an edge-wrapped steel plate (20), wherein an upper rectangular cylindrical edge-wrapped steel plate (20) is inserted into the rectangular cylindrical edge-wrapped plug-in steel plate (3c), and the upper end of the lower longitudinal steel bar column (101) and the lower end of the upper longitudinal steel bar column (101) are plugged in through the upper rectangular cylindrical edge-wrapped steel plate (20) and the rectangular cylindrical edge-wrapped plug-in steel plate (3c); first bolt holes (21) are respectively arranged on the side walls of the upper rectangular cylindrical edge-wrapped steel plate (20) and the side walls of the rectangular cylindrical edge-wrapped plug-in steel plate (3c), and steel bar through holes (3d) are evenly distributed on the plate surface of the lower pad (3a), and the lower end of the longitudinal steel bar column (101) passes through the steel bar through holes (3d) and is welded to the lower pad (3a).

2. The construction method of the assembled building frame structure member according to claim 1, characterized in that: The construction method comprises the following steps: Step 1: Design according to the construction requirements and building material selection of the building, select the sizes of the longitudinal steel bar column (101), the beam reinforcement column (201) and the stirrup according to the floor height, floor width, the size of the column (100) of each floor, the size of the beam (200) of each floor and the design requirements of the inflection point of each floor, and make the inflection point on the column (100) of the bottom floor located at 2 / 3 of the height of the column (100), the inflection point on the column (100) of the upper floor located at the middle of the column (100), the inflection point on the beam (200) located at both ends of the beam (200), and the distance between the inflection point on the beam (200) and the end of the beam (200) is 1.5 to 2 times the cross-sectional height of the beam (200); Step 2: Prefabricate the longitudinal reinforcement column (101) and the beam reinforcement column (201) into a reinforcement cage skeleton by welding with corresponding stirrups; insert and weld the lower rectangular cylindrical edging steel plate (3b), the lower pad (3a) and the rectangular cylindrical edging plug-in steel plate (3c) at the bottom end of the reinforcement cage skeleton formed by the longitudinal reinforcement column (101); insert and weld the upper rectangular cylindrical edging steel plate (20) at the top end of the reinforcement cage skeleton formed by the longitudinal reinforcement column (101); insert the lower rectangular cylindrical edging steel plate (20) into the top end of the reinforcement cage skeleton formed by the longitudinal reinforcement column (101) and insert the lower end of the reinforcement cage skeleton formed by the longitudinal reinforcement column (101) into the top end of the reinforcement cage skeleton formed by the longitudinal reinforcement column (101); 1) A beam reinforcement transition column (103) is arranged on the side of the formed steel cage skeleton, and a beam reinforcement edge steel plate (400) and a first U-shaped groove edge steel plate (401) are sequentially installed at both ends of the steel cage skeleton formed by the beam reinforcement column (201), the lower pad (3a) is located between the lower end of the lower rectangular cylindrical edge steel plate (3b) and the top end of the rectangular cylindrical edge plug-in steel plate (3c), and the lower pad (3a) is welded to the inner side of the lower end of the lower rectangular cylindrical edge steel plate (3b) or to the inner side of the rectangular cylindrical edge plug-in steel plate (3c), and the upper rectangular cylindrical edge steel plate (20) is plugged into the rectangular cylindrical edge plug-in steel plate (3c); Step 3, transporting the prefabricated steel cage frame to the construction site, installing the bottom steel cage frame components from bottom to top, and connecting each steel cage frame component formed by the longitudinal steel column (101) horizontally and vertically to the steel cage frame component formed by the longitudinal steel column (101) at the inflection point to form an assembled frame building structure; Step 4: After the above-mentioned steel cage skeleton components are placed in the concrete casting template and cast, the upper rectangular cylindrical edging steel plate (20), the rectangular cylindrical edging splicing steel plate (3c), and the lower rectangular cylindrical edging steel plate (3b) are covered and fixed on the end outer wall of the concrete precast column and the end outer wall of the beam reinforcement edging steel plate (400) and the first U-shaped groove edging steel plate (401) of the concrete precast beam. When the upper longitudinal steel bar column (101) is transferred to the top of the lower longitudinal steel bar column (101), the rectangular cylindrical edging splicing steel plate (3c) on the lower end of the upper longitudinal steel bar column (101) is inserted into the upper rectangular cylindrical edging steel plate (20) at the top of the lower longitudinal steel bar column (101), and the upper rectangular cylindrical edging steel plate (20) is sleeved in the rectangular cylindrical edging splicing steel plate (3c) and fixed by bolts or welding, and is placed in the concrete casting template to cast to form the upper frame structure.

Images