Prefabricated frame structure beam-column connection joint and prefabricated frame structure

Abstract

The utility model provides a beam-column connecting joint of a prefabricated frame structure and the prefabricated frame structure. The beam-column connecting joint comprises a first prefabricated column and a second prefabricated column, prefabricating a beam; the column body rectangular steel pipe is arranged on the periphery of a column body of the first prefabricated column in a sleeving mode at the joint of the first prefabricated column and the prefabricated beam; the two column body stiffening plates are aligned with the upper edge and the lower edge of the section of the H-shaped steel beam connecting section correspondingly, first steel bar through holes are formed in the positions, corresponding to longitudinal steel bars of the first prefabricated column, of the two column body stiffening plates and used for allowing the longitudinal steel bars of the first prefabricated column to penetrate through, and air holes are formed in the centers of the two column body stiffening plates and used for allowing the longitudinal steel bars of the first prefabricated column to penetrate through. The concrete is poured to enable column body concrete to be continuous; and the precast beam is fixedly connected with the first precast column through welding and / or bolts. On the premise of ensuring the joint connection strength, the joint structure is improved, temporary supports are removed through dry connection, the temporary support cost is saved, the project quality is improved, the construction speed is increased, and the construction period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of building structures, in particular to prefabricated assembled structures, and specifically to a prefabricated assembled frame structure beam-column connection node and a prefabricated assembled frame structure. Background Art

[0002] Existing prefabricated concrete structure systems are mostly manufactured in factories through prefabricated concrete columns, concrete beams, concrete walls, etc., which are transported to the construction site, connected on site through steel anchoring or steel sleeve grouting, and concrete is poured a second time at the connection position. The next step of construction is carried out when the concrete reaches a certain strength.

[0003] Most existing prefabricated concrete structure systems have secondary concrete pouring, so there are the following shortcomings: 1. Since the beam-column joints cannot be fixed during the hoisting stage, temporary supports need to be erected before hoisting to support the stability of the concrete columns and concrete beams. The temporary supports can only be removed after the secondary pouring reaches the design strength, which will increase the support rental costs, support hoisting costs, support installation costs, support removal costs, etc.; 2. The steel bars at the connection nodes of concrete columns and concrete beams are all in the same section, which requires high construction quality. In the cast-in-place concrete structure specification, the tensile steel bars in the same connection section are overlapped and connected. The requirements that the head percentage should not exceed 25% and 50% conflict with each other; 3. If steel sleeve grouting is used, the grouting control details are more and the quality requirements are higher, and it is easy to make mistakes during construction, affecting the quality of the project, and the concrete is a hidden project after the second pouring and cannot be reviewed; 4. After the steel bars are connected, a second post-pouring of concrete is required. Due to the secondary post-pouring, the treatment of the joints is more complicated and it is difficult to achieve the effect of a single pouring, which can easily cause cracking and other problems; 5. Due to the secondary pouring of concrete at the beam-column joints, a stable structure cannot be formed before the poured concrete reaches a certain strength, and the construction of the next floor cannot be carried out, affecting the construction period. Summary of the invention

[0004] In view of the deficiencies in the prior art, the main purpose of the utility model is to provide a prefabricated and assembled frame structure beam-column connection node and a prefabricated and assembled frame structure. Under the premise of ensuring the node connection strength, the node structure is improved, temporary supports are removed by dry connection and temporary support costs are saved, the project quality is improved, the construction speed is increased to save construction time, etc.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] The utility model first provides a prefabricated assembled frame structure beam-column connection node, the beam-column connection node comprising:

[0007] The first precast column is a reinforced concrete column;

[0008] The precast beam is a reinforced concrete beam, and its ends are connected with H-shaped steel beam connecting sections;

[0009] A rectangular steel pipe for the column body is sleeved on the outer periphery of the column body of the first prefabricated column at the connection between the first prefabricated column and the prefabricated beam, and the length of the rectangular steel pipe for the column body is greater than the cross-sectional height of the prefabricated beam;

[0010] Two column stiffening plates are embedded in the column rectangular steel tube in an upper and lower horizontally opposed manner, and are respectively aligned with the upper and lower edges of the cross-section of the H-shaped steel beam connecting section, and a steel bar through hole is opened on the two column stiffening plates corresponding to the longitudinal steel bar of the first prefabricated column, which is used to pass the longitudinal steel bar of the first prefabricated column, and a vent hole is opened in the center of the two column stiffening plates for pouring concrete to make the column concrete continuous; and

[0011] The prefabricated beam is welded and / or bolted to the first prefabricated column so that the upper and lower edges of the cross-section of the H-beam connecting section are aligned with the two column body stiffening plates.

[0012] In some embodiments, the beam-column connection node further includes a column end connection piece, which is an H-shaped steel connection section, welded and fixed to the side of the column body rectangular steel tube, and the upper and lower edges of the cross section of the H-shaped steel connection section are respectively aligned with the two column body stiffening plates, and the webs of the H-shaped steel connection section and the H-shaped steel beam connection section are correspondingly provided with bolt holes, the H-shaped steel connection section is butt-jointed with the H-shaped steel beam connection section, and the webs are fixed by bolt connection, and the flanges are welded or bolted; or

[0013] The column end connecting piece is one or two connecting plates, which are welded and fixed to the side of the rectangular steel tube of the column body. Bolt holes are opened on the connecting plate, and the web of the H-shaped steel beam connecting section is correspondingly opened with bolt holes. The connecting plate and the web of the H-shaped steel beam connecting section are fixed by bolts, and the upper and lower flanges of the H-shaped steel beam connecting section are welded and fixed to the rectangular steel tube of the column body.

[0014] In some embodiments, a beam end stiffening plate is welded between the upper and lower flanges and the web of the H-shaped steel beam connection section, and a second steel bar through hole is opened on the beam end stiffening plate corresponding to the longitudinal steel bar of the prefabricated beam, and the longitudinal steel bar of the prefabricated beam is welded to the beam end stiffening plate at the second steel bar through hole or fixed by nuts; and / or

[0015] The beam end reinforcement stirrups are symmetrically arranged between the upper and lower flanges on both sides of the web of the H-shaped steel beam connection section, and the upper and lower ends of the beam end reinforcement stirrups are respectively welded and fixed to the upper and lower flanges; and / or

[0016] Studs are vertically welded on the upper and lower flanges and / or webs of the H-beam connecting section.

[0017] In some embodiments, the beam end reinforcement stirrups are made of steel bars or steel plates, bent in a [ shape, with the opening facing inward, and the upper and lower ends are respectively welded and fixed to the upper and lower flanges of the H-shaped steel beam connecting section.

[0018] The utility model further provides a prefabricated assembled frame structure, comprising the beam-column connection node.

[0019] In some embodiments, a column-column connection node is further included, the column-column connection node comprising:

[0020] The first precast column is a reinforced concrete column;

[0021] The second precast column is a reinforced concrete column, and

[0022] The second prefabricated column is butt-connected to the first prefabricated column at a position 0.5 to 1.5 m above the prefabricated beam.

[0023] In some embodiments, the column-column connection node comprises:

[0024] The two column ends are covered with rectangular steel pipes, which are respectively covered on the outer periphery of the column body at the connecting ends of the first prefabricated column and the second prefabricated column, and the length thereof exceeds the predetermined distance between the ends of the first prefabricated column and the second prefabricated column;

[0025] Two column end stiffening plates are respectively horizontally embedded in the two column end outer jacket rectangular steel tubes, and three steel bar through holes are opened on the two column end stiffening plates corresponding to the longitudinal steel bars of the first prefabricated column and the second prefabricated column, and the longitudinal steel bars of the first prefabricated column and the second prefabricated column are welded to the column end stiffening plates at the three steel bar through holes or connected and fixed by nuts;

[0026] The column end outer sleeve rectangular steel pipe connecting sleeve is sleeved inside the two column end outer sleeve rectangular steel pipes at the connection between the first prefabricated column and the second prefabricated column; and

[0027] The rectangular steel pipes at the two column ends are flattened, tightened and fixed around the circumference by full penetration welding, or the rectangular steel pipes at the two column ends are fixed by a connecting plate and then welded or bolted.

[0028] In some embodiments, the column-column connection node comprises:

[0029] The two column ends are embedded with H-shaped steel, which are respectively embedded in the column body at the connecting ends of the first prefabricated column and the second prefabricated column, and the length thereof exceeds the predetermined distance between the ends of the first prefabricated column and the second prefabricated column;

[0030] Two column end sealing plates are respectively horizontally arranged at the ends of the first prefabricated column and the second prefabricated column and cover the ends of the first prefabricated column and the second prefabricated column, and four steel bar through holes are opened on the two column end sealing plates corresponding to the longitudinal steel bars of the first prefabricated column and the second prefabricated column, and the longitudinal steel bars of the first prefabricated column and the second prefabricated column are welded to the column end sealing plates at four places of the steel bar through holes or connected and fixed by nuts, and an H-shaped steel through hole is opened in the center of the two column end sealing plates, and the H-shaped steel embedded in the column end is welded and fixed to the column end sealing plates at the H-shaped steel through hole; and

[0031] The two column ends are embedded with H-shaped steel flanges which are welded or bolted, and the webs are welded or bolted.

[0032] In some embodiments, the column-column connection node comprises:

[0033] The two column ends are embedded with rectangular steel pipes, and the connecting ends of the first prefabricated column and the second prefabricated column are respectively embedded in the column body, and the outer wall thereof is welded and fixed to the longitudinal steel bars of the first prefabricated column and the second prefabricated column, and the length thereof exceeds the predetermined distance of the ends of the first prefabricated column and the second prefabricated column;

[0034] The column end embedded rectangular steel pipe connecting sleeve is sleeved in the two column end embedded rectangular steel pipes at the connection between the first prefabricated column and the second prefabricated column; and

[0035] The two column ends are embedded with rectangular steel pipes and fixed by full penetration welding, or the two column ends are embedded with rectangular steel pipes and fixed by connecting plates and then welded or bolted.

[0036] In some embodiments, a column-foundation beam-foundation connection node is further included, and the column-foundation beam-foundation connection node includes:

[0037] The first precast column is a reinforced concrete column;

[0038] A column side connecting member, fixedly arranged on a side surface of the first prefabricated column;

[0039] The foundation beam is a reinforced concrete beam;

[0040] A foundation beam end connector, fixedly disposed at the end of the foundation beam, and fixedly connected to the column side connector by welding or bolts;

[0041] A foundation beam shear key, fixedly arranged at the bottom of the foundation beam;

[0042] The foundation is an independent foundation or a column pier, the foundation has a reserved shear groove, the foundation beam shear key is embedded in the shear groove and is fixed by secondary pouring of concrete or grouting; and

[0043] The first prefabricated column is connected to the foundation beam by welding or bolts to transfer horizontal force, and the foundation beam is connected to the foundation by shear keys to transfer horizontal force and vertical force.

[0044] The beneficial effects of the utility model compared with the prior art are as follows: the utility model proposes a prefabricated assembled frame structure beam-column connection node and a prefabricated assembled frame structure, wherein steel pipes are wrapped around the prefabricated concrete columns, H-shaped steel and other steel connectors are embedded in the prefabricated concrete beam ends, and the prefabricated concrete beam-column on-site connections are all connected by steel connectors in a dry manner, and reserved steel pipes, H-shaped steel and other steel connectors are also used between columns, and the dry connection is connected by bolts and welds. Under the premise of ensuring the strength of the node connection, it is possible to: 1. Since bolts or welds are used to connect the beam-column nodes, a stable structure can be formed during hoisting without temporary support, reducing support costs; 2. Since steel connectors are used for connection, later inspections, re-inspections, and appraisals can be carried out without hidden projects; 3. Since steel structure bolts or welds are used for connection, there is no secondary pouring of concrete, and the quality is more controllable; 4. Since bolts or welds are used to connect the beam-column nodes, a stable structure can be formed during hoisting, and the construction of the next layer can be carried out after the construction of one layer is completed, thereby increasing the construction speed. It should be understood that the implementation of any embodiment of the present utility model does not mean that multiple or all of the above-mentioned beneficial effects must be possessed or achieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0046] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0047] Figure 1 This is a schematic plan view of a beam-column connection node according to an embodiment of the utility model;

[0048] Figure 2 This is a schematic elevation diagram of a beam-column connection node according to an embodiment of the utility model;

[0049] Figure 3This is a partial schematic diagram of a beam-column connection node of an embodiment of the utility model, wherein (a) shows a column end plane, (b) shows a column body stiffening plate, and (c) shows a prefabricated column section;

[0050] Figure 4 This is a partial schematic diagram of a beam-column connection node of an embodiment of the utility model, wherein (a) shows the column end elevation, (b) shows the beam end elevation, and (c) shows the beam end plane;

[0051] Figure 5 This is a schematic diagram of a cross section of a prefabricated beam according to an embodiment of the utility model, wherein (a) shows a beam end stiffening plate (longitudinal steel bars), (b) shows a beam end stiffening plate (steel through hole 2), and (c) shows a beam end reinforced stirrup, concrete and stud 1;

[0052] Figure 6 This is a schematic plan view of a beam-column connection node according to another embodiment of the utility model;

[0053] Figure 7 This is a schematic elevation diagram of a beam-column connection node according to another embodiment of the utility model;

[0054] Figure 8 This is a partial schematic diagram of a beam-column connection node of another embodiment of the utility model, wherein (a) shows the column end elevation, (b) shows the beam end elevation, and (c) shows the beam end plane;

[0055] Fig. 9 A schematic diagram of the basic plan layout of a prefabricated assembled frame structure according to an embodiment of the utility model;

[0056] Fig.10 A schematic diagram of the plane layout of a prefabricated assembled frame structure according to an embodiment of the utility model;

[0057] Fig.11 A schematic diagram of a prefabricated assembled frame structure frame elevation of an embodiment of the utility model;

[0058] Fig.12 This is a schematic elevation diagram of a column-column connection node according to an embodiment of the utility model;

[0059] Fig.13 This is a partial schematic diagram of a column-column connection node of an embodiment of the utility model, wherein (a) shows a rectangular steel pipe and a stiffening plate at the column end, (b) shows the stiffening plate at the column end, and (c) shows a prefabricated column section;

[0060] Fig.14 This is a partial schematic diagram of a column-column connection node of an embodiment of the utility model, wherein (a) shows a rectangular steel tube outer jacket at the column end (upper), and (b) shows a rectangular steel tube outer jacket at the column end (lower);

[0061] Fig.15 This is a schematic elevation diagram of a column-column connection node according to another embodiment of the utility model;

[0062] Fig.16 This is a partial schematic diagram of a column-column connection node of another embodiment of the utility model, wherein (a) shows a column end sealing plate, and (b) shows an H-shaped steel embedded in the column end and a column end sealing plate;

[0063] Fig.17 This is a schematic elevation diagram of a column-column connection node of another embodiment of the utility model;

[0064] Fig.18 This is a schematic cross-sectional view of a column-column connection node according to another embodiment of the utility model;

[0065] Fig.19 This is a schematic elevation diagram of a column-foundation beam-foundation connection node according to an embodiment of the utility model.

[0066] Markings in the figure:

[0067] The first precast column 100, the precast beam 200, the beam end stiffening plate 201, the beam end dense stirrup 202, the stud 1 203, the H-shaped steel beam connecting section 204, the steel bar through hole 205, the second precast column 300, the foundation beam 400, the foundation 500;

[0068] Column body rectangular steel pipe 1-1, column body stiffening plate 1-2, steel bar through hole 1-2-1, air vent 1-2-2, column end connector 1-3, H-shaped steel connecting section 1-3-1, connecting plate 1-3-2;

[0069] A rectangular steel pipe 2-1 is provided at the column end, a stiffening plate 2-2 is provided at the column end, a steel bar through hole 3 2-2-1 is provided, and a connecting sleeve 2-3 is provided at the column end;

[0070] H-shaped steel 2-4 embedded in the column end, column end sealing plate 2-5, steel bar through hole 4 2-5-1, H-shaped steel through hole 2-5-2, stud 2 2-6;

[0071] A rectangular steel pipe 2-7 is embedded in the column end, a rectangular steel pipe connecting sleeve 2-8 is embedded in the column end, and a bolt 2-9;

[0072] Column side connector 3-1, foundation beam end connector 3-2, foundation beam shear key 3-3.

[0073] In the various drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in combination with the embodiment and the drawings. Here, the illustrative embodiment of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.

[0075] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] It should be understood that the terms "include / comprise", "consist of..." or any other variations are intended to cover non-exclusive inclusion, so that a product, device, process or method that includes a series of elements includes not only those elements, but also may include other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of more restrictions, the elements defined by the sentence "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method that includes the elements.

[0077] It is also necessary to understand that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and cannot be understood as a limitation on the present invention.

[0078] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0079] In view of the fact that the existing prefabricated concrete structure systems are mostly cast by secondary concrete, which has some shortcomings, the utility model makes relevant improvements and provides a prefabricated assembled frame structure beam-column connection node and a prefabricated assembled frame structure.

[0080] See also Figure 1 , Figure 2 , Figure 1 , Figure 2 The plan view and elevation view of a beam-column connection node of a prefabricated assembled frame structure of the utility model are shown. The beam-column connection node includes a first prefabricated column 100 and a prefabricated beam 200, which are connected and fixed by the beam-column connection node.

[0081] In the present invention, the first prefabricated column 100 is a reinforced concrete column, which is prefabricated by tying longitudinal steel bars and stirrups and pouring concrete. The cross section of the first prefabricated column 100 is preferably square.

[0082] The precast beam 200 is a reinforced concrete beam, and the middle main section is a reinforced concrete beam, which is precast by tying longitudinal steel bars, stirrups and pouring concrete. The end is an H-beam connecting section 204, a part of the H-beam connecting section 204 is exposed to connect with the first precast column 100, and a part is embedded in the middle main section, for example, the two each occupy 1 / 2, and the longitudinal steel bars at the overlap position of the middle main section and the H-beam connecting section 204 are parallel to the upper and lower inner surfaces of the H-beam and anchored to the H-beam, and concrete is poured throughout the overlap position. Of course, the H-beam can also use I-beams as needed. The cross-sectional dimensions of the H-beam connecting section 204 do not exceed the cross-sectional dimensions of the middle main section, or are consistent with the cross-sectional dimensions of the middle main section.

[0083] See also Figure 2 , Figure 3 The beam-column connection node of the utility model further includes: a column body rectangular steel pipe 1-1 and two column body stiffening plates 1-2.

[0084] Specifically, the column rectangular steel tube 1-1 is sleeved on the outer periphery of the column of the first precast column 100 at the connection between the first precast column 100 and the precast beam 200, and the length of the column rectangular steel tube 1-1 is greater than the cross-sectional height of the precast beam 200. The column rectangular steel tube 1-1 is not a full-length steel tube, but is only partially sleeved at the connection between the first precast column 100 and the precast beam 200. The column rectangular steel tube 1-1 is exposed outside the first precast column 100, and the outer surface is flush with the concrete surface of the first precast column 100, forming a continuous smooth surface, without changing the overall dimensions of the first precast column 100.

[0085] Preferably, both ends of the column body rectangular steel tube 1-1 symmetrically extend beyond the cross section of the precast beam 200 by 5-50 cm, and a more preferred design is 10-20 cm, for example, both ends extend beyond the upper and lower edges of the cross section of the precast beam 200 by 10 cm to ensure the connection strength at the node.

[0086] Continue to see Figures 2 to 4The two column stiffening plates 1-2 are embedded in the column rectangular steel tube 1-1 horizontally opposite to each other, and are aligned with the upper and lower edges of the cross section of the H-shaped steel beam connecting section 204, that is, the two column stiffening plates 1-2 are respectively arranged in the column rectangular steel tube 1-1 at the height positions of the upper and lower edges of the cross section of the H-shaped steel beam connecting section 204, so as to strengthen the connection strength between the column and the beam at this point.

[0087] The two column stiffening plates 1-2 are provided with steel bar through holes 1-2-1 corresponding to the longitudinal steel bars of the first precast column 100, which are used to pass the longitudinal steel bars. The steel bar through holes 1-2-1 are provided along the four sides of the column stiffening plates 1-2, and the number and position of the steel bar through holes 1-2-1 correspond to the longitudinal steel bars of the first precast column 100. The longitudinal steel bars of the first precast column 100 only need to pass through the steel bar through holes 1-2-1, and do not need to be connected to the column stiffening plates 1-2. In addition, the two column stiffening plates 1-2 are also provided with air holes 1-2-2 in the center, which are used to pour concrete, so that the concrete in the first precast column 100 is continuous, so that the concrete of the first precast column 100 is connected throughout and will not be cut off at the two column stiffening plates 1-2. The air holes 1-2-2 are preferably circular, and the size can be flexibly designed according to the column cross-section size and the pouring requirements.

[0088] By sleeved a section of column rectangular steel pipe 1-1 on the periphery of the first prefabricated column 100 and embedding the column stiffening plate 1-2, the prefabricated beam 200 is welded and / or bolted to the first prefabricated column 100 with the upper and lower edges of the cross section of its H-shaped steel beam connecting section 204 aligned with the two column stiffening plates 1-2. In this way, dry connection is adopted while ensuring the strength of the connection node, avoiding the secondary pouring of concrete.

[0089] See also Figure 2 In some embodiments, the beam-column connection node also includes a column end connector 1-3, which is connected and fixed to the side of the column body rectangular steel tube 1-1 and is used to be fixed to the H-shaped steel beam connection section 204 by welding and / or bolting.

[0090] The utility model first provides a specific column end connector 1-3, which is an H-shaped steel connecting section 1-3-1, such as Figure 3 , Figure 4As shown, the H-shaped steel connecting section 1-3-1 is welded and fixed to the side of the column rectangular steel tube 1-1, and the upper and lower edges of the cross section of the H-shaped steel connecting section 1-3-1 are respectively aligned with the two column stiffening plates 1-2, and the web of the H-shaped steel connecting section 1-3-1 is provided with bolt holes, and the web of the H-shaped steel beam connecting section 204 is correspondingly provided with bolt holes, the H-shaped steel connecting section 1-3-1 is butt-jointed with the H-shaped steel beam connecting section 204, and the web is connected and fixed by bolts and connecting plates, and the flanges of the H-shaped steel connecting section 1-3-1 and the H-shaped steel beam connecting section 204 can be connected by welding or bolts. The length of the H-shaped steel connecting section 1-3-1 is preferably set to 0.2-1m. By using the H-shaped steel connecting section 1-3-1, the connection position of the first precast column 100 and the precast beam 200 is set at a distance of 0.2-1m from the first precast column 100. Through this setting, the bending moment at the end of the concrete part of the precast beam is small, which can reduce the reinforcement of the beam and the cross-sectional size of the concrete beam.

[0091] See also Figure 4 , Figure 5 In some embodiments, a beam end stiffening plate 201 is welded between the upper and lower flanges and the web of the H-shaped steel beam connection section 204. The beam end stiffening plates 201 are symmetrically arranged on both sides of the web, with a height consistent with the distance between the upper and lower flanges and a width consistent with the corresponding flange width. The beam end stiffening plates 201 completely cover the beam end of the precast beam 200, thereby strengthening the connection strength and connecting with the longitudinal steel bars of the precast beam 200, and at the same time serving as a template for concrete pouring.

[0092] In addition, if Figure 2 , Figure 4 , Figure 5 As shown, a second steel bar through hole 205 is correspondingly provided on the beam end stiffening plate 201, and longitudinal steel bars and stirrups are arranged in the beam body of the precast beam 200. The longitudinal steel bars are arranged along the inner sides of the upper and lower flanges. The longitudinal steel bars at the overlap position between the middle main section and the H-beam connecting section 204 are parallel to the upper and lower inner surfaces of the H-beam and pass through the second steel bar through hole 205 on the beam end stiffening plate 201, and are anchored to the H-beam. Concrete is poured throughout the overlap position. In addition, the longitudinal steel bars are connected and fixed to the beam end stiffening plate 201 at the second steel bar through hole 205, for example, by welding or nuts, so that the steel bars are reliably connected to the H-beam and the force transmission is continuous.

[0093] In some embodiments, Figure 4 , Figure 5 As shown, the beam end dense stirrups 202 are welded between the upper and lower flanges of the H-shaped steel beam connecting section 204, and the beam end dense stirrups 202 are symmetrically arranged on both sides of the web. The beam end dense stirrups 202 are different from the conventional stirrups in the beam body. The beam end dense stirrups 202 can be made of steel bars or steel plates, which are arranged more densely, bent in a [ shape, with the opening facing inward, and the upper and lower ends are respectively welded and fixed to the upper and lower flanges of the H-shaped steel beam connecting section 204.

[0094] In some embodiments, Figure 4 , Figure 5 As shown, a stud 203 is vertically welded and fixed on the web and / or flange of the H-shaped steel beam connecting section 204, and the stud 203 is used to enhance the integrity of the H-shaped steel beam and concrete, thereby improving the node strength here.

[0095] The utility model also provides a specific column end connector 1-3, see Figure 6-8 , is one or two connecting plates 1-3-2, preferably two connecting plates 1-3-2 are used, and are welded and fixed to the side of the column rectangular steel tube 1-1 in a left and right opposite manner, the spacing between the two connecting plates 1-3-2 is not less than the thickness of the web of the H-shaped steel beam connecting section 204, and is used to clamp the web of the H-shaped steel beam connecting section 204, and the two connecting plates 1-3-2 are correspondingly provided with bolt holes, and the web of the H-shaped steel beam connecting section 204 is correspondingly provided with bolt holes, and the H-shaped steel beam connecting section 204 is connected and fixed to the two connecting plates 1-3-2 on both sides of the web by bolts.

[0096] In addition, the upper and lower flanges of the end of the prefabricated beam are simultaneously welded and fixed to the column rectangular steel pipe 1-1 to form a rigid connection at the node.

[0097] In the present invention, based on the beam-column connection node, a prefabricated assembled frame structure is further provided, such as Figure 9-11 , including prefabricated columns, prefabricated beams, foundation beams and foundations. Through the beam-column connection nodes provided by the utility model, the prefabricated columns and prefabricated beams can be quickly connected, and the connection strength at the nodes can be guaranteed.

[0098] In some embodiments, see Fig.11 The prefabricated assembled frame structure also includes a column-column connection node for butt-joining the upper and lower prefabricated columns. The column-column connection node includes a first prefabricated column 100 and a second prefabricated column 300. The two have the same structure and are both reinforced concrete columns. The heights of the first prefabricated column 100 and the second prefabricated column 300 are both higher than the top elevation of the prefabricated beam 200. That is, the connection position between the columns is not at the connection position between the columns and the beams. The utility model sets the connection position between the columns to be 0.5-1.5m higher than the connection position between the columns and the beams, preferably 1m, that is, the second prefabricated column 300 is butt-joined with the first prefabricated column 100 at a position 1m above the prefabricated beam 200. The column bending moment at the 1m position is small, and the on-site splicing operation at this position is convenient, thereby realizing the rapid connection of the prefabricated columns on site.

[0099] The utility model provides a specific column-column connection node, see Figure 12-14, including two column end jacket rectangular steel tubes 2-1 and two column end stiffening plates 2-2, the first prefabricated column 100 and the second prefabricated column 300 are butt-jointed at the connection point by two column end jacket rectangular steel tubes 2-1 and planed and tightened around the circumference and fully penetrated and welded, or the two column end jacket rectangular steel tubes 2-1 are fixed by a connecting plate and then the two column end jacket rectangular steel tubes 2-1 are welded or bolted.

[0100] Specifically, the rectangular steel tubes 2-1 at the two column ends are similar to the rectangular steel tubes 1-1 of the column body, and are respectively sleeved on the outer periphery of the column body at the connecting ends of the first prefabricated column 100 and the second prefabricated column 300, and their length exceeds the predetermined distance of the ends of the first prefabricated column 100 and the second prefabricated column 300. The utility model takes 100-300mm, and preferably adopts 100mm.

[0101] The two column end stiffening plates 2-2 are similar to the column body stiffening plates 1-2, and are horizontally embedded in the two column end outer rectangular steel tubes 2-1 respectively, and the two column end stiffening plates 2-2 are provided with steel bar through holes 3 2-2-1 corresponding to the longitudinal steel bars of the first prefabricated column 100 and the second prefabricated column 300 for passing and connecting and fixing the longitudinal steel bars. The longitudinal steel bars are connected and fixed to the column end stiffening plates 2-2 at the steel bar through holes 3 2-2-1, for example, by welding or by nuts.

[0102] Furthermore, the column-column connection node also includes a column end outer sleeve rectangular steel pipe connection sleeve 2-3, which can be pre-set in any one of the column end outer sleeve rectangular steel pipes 2-1, and the circumference is reliably connected to the column end outer sleeve rectangular steel pipe 2-1, such as welding and fixing. When the first prefabricated column 100 and the second prefabricated column 300 are docked, the column end outer sleeve rectangular steel pipe 2-1 of the first prefabricated column 100 and the second prefabricated column 300 is sleeved, and its length is consistent with the sum of the predetermined distances of the two column end outer sleeve rectangular steel pipes 2-1 beyond the ends of the first prefabricated column 100 and the second prefabricated column 300, or slightly smaller. With the help of the column end outer sleeve rectangular steel pipe connection sleeve 2-3, the docking positioning function is played. At the same time, the first prefabricated column 100 and the second prefabricated column 300 are connected at the connection through the two column end outer sleeve rectangular steel pipes 2-1 and the internal column end outer sleeve rectangular steel pipe connection sleeve 2-3, which is more conducive to planing and tightening the circumference and full penetration welding.

[0103] The utility model also provides a specific column-column connection node, see Figure 15-16 , including two column end embedded H-shaped steels 2-4 and two column end sealing plates 2-5, the first prefabricated column 100 and the second prefabricated column 300 are connected at the connection point by welding or bolting the flanges of the two column end embedded H-shaped steels 2-4 and welding or bolting the webs.

[0104] Specifically, the two column end embedded H-shaped steels 2-4 are respectively embedded in the column body at the connecting ends of the first prefabricated column 100 and the second prefabricated column 300, and their length exceeds the predetermined distance between the ends of the first prefabricated column 100 and the second prefabricated column 300. The utility model takes 100-300mm, and preferably adopts 100mm.

[0105] The two column end sealing plates 2-5 are respectively horizontally arranged at the ends of the first precast column 100 and the second precast column 300, covering the ends of the first precast column 100 and the second precast column 300, and the two column end sealing plates 2-5 are provided with steel bar through holes four 2-5-1 corresponding to the longitudinal steel bars of the first precast column 100 and the second precast column 300, for passing and connecting and fixing the longitudinal steel bars, and the longitudinal steel bars are connected and fixed to the column end sealing plates 2-5 at the steel bar through holes four 2-5-1, for example, by welding or by nuts.

[0106] In addition, an H-shaped steel through hole 2-5-2 is opened in the center of the two column end sealing plates 2-5 for passing and connecting the embedded H-shaped steel 2-4 at the column end, and the embedded H-shaped steel 2-4 at the column end is reliably connected to the column end sealing plate 2-5 at the H-shaped steel through hole 2-5-2, for example, by circumferential welding.

[0107] In some embodiments, bolts 2-6 are vertically welded and fixed on the web and flange of the H-shaped steel 2-4 embedded in the column end. With the help of the bolts 2-6, the reinforced concrete and the H-shaped steel are reliably connected and bear the force together, thereby enhancing the connection strength and integrity between the H-shaped steel 2-4 embedded in the column end and the first prefabricated column 100 and the second prefabricated column 300, thereby improving the node strength here.

[0108] The utility model further provides a specific column-column connection node, see Figure 17-18 , including two column end embedded rectangular steel tubes 2-7, the first prefabricated column 100 and the second prefabricated column 300 are fixed at the connection by full penetration welding of the two column end embedded rectangular steel tubes 2-7, or the two column end embedded rectangular steel tubes 2-7 are fixed by a connecting plate and then welded or bolted.

[0109] Specifically, the two column end embedded rectangular steel pipes 2-7 are respectively embedded in the column body at the connecting ends of the first prefabricated column 100 and the second prefabricated column 300, and their length exceeds the predetermined distance between the ends of the first prefabricated column 100 and the second prefabricated column 300. The utility model takes 100-300mm, and preferably adopts 100mm.

[0110] The rectangular steel tube 2-7 embedded in the column end is connected and fixed to the longitudinal steel bars of the first prefabricated column 100 and the second prefabricated column 300. Specifically, the longitudinal steel bars are welded and fixed to the outer wall of the rectangular steel tube 2-7 embedded in the column end, thereby fixing the ends of the longitudinal steel bars.

[0111] Furthermore, the column-column connection node also includes a column-end embedded rectangular steel tube connection sleeve 2-8, which is sleeved in the column-end embedded rectangular steel tube 2-7 at the connection between the first prefabricated column 100 and the second prefabricated column 300, and its length is consistent with the sum of the predetermined distances of the two column-end embedded rectangular steel tubes 2-7 exceeding the ends of the first prefabricated column 100 and the second prefabricated column 300, or slightly smaller.

[0112] Similarly, in some embodiments, the outer walls of the two column ends embedded in the rectangular steel tubes 2-7 are vertically welded and fixed with bolts 2-9 around them, and the bolts 2-9 are used to enhance the connection strength and integrity between the column ends embedded in the rectangular steel tubes 2-7 and the first prefabricated column 100 and the second prefabricated column 300, thereby improving the node strength here.

[0113] In some embodiments, see Fig.19 The prefabricated assembled frame structure also includes a column-foundation beam-foundation connection node, which is used to connect the prefabricated column with the foundation beam, and to connect the foundation beam with the foundation.

[0114] The column-foundation beam-foundation connection node includes a first prefabricated column 100, a foundation beam 400 and a foundation 500. The first prefabricated column 100 is a reinforced concrete column. A column side connection member 3-1 is arranged on the side of the first prefabricated column 100. The column side connection member 3-1 can be, for example, a steel plate, which is embedded in the column body. The foundation beam 400 is a reinforced concrete beam. A foundation beam end connection member 3-2 is arranged at the end of the foundation beam 400 near the first prefabricated column 100. The foundation beam end connection member 3-2 can be, for example, a steel plate, which is embedded in the beam body. The foundation beam end connection member 3-2 is welded or bolted to the column side connection member 3-1. For example, two steel plates are placed opposite to each other and welded or bolted to be fixed, so that horizontal force can be transmitted. The foundation 500 is an independent foundation or a column pier. The bottom of the foundation beam 400 is provided with a foundation beam shear key 3-3. The foundation beam shear key 3-3 can be made of steel plates, angle steels, channel steels, H-shaped steels, etc. The foundation 500 has a corresponding preset shear groove. The foundation beam shear key 3-3 is embedded in the preset shear groove of the foundation 500. After the shear groove is embedded, concrete or grouting material is poured for the second time, and horizontal and vertical forces are transmitted through the foundation beam shear key 3-3. The bending moment is resisted by the upper and lower horizontal forces, that is, the vertical force and bending moment can be transmitted through the node, so that the first prefabricated column, the foundation beam, and the foundation form a rigid connection, that is, a fixed connection, which increases constraints, reduces reinforcement, and saves construction costs.

[0115] From the above description, it can at least be known that the utility model provides a prefabricated and assembled frame structure beam-column connection node and a prefabricated and assembled frame structure with improved node structure. Under the premise of ensuring the node connection strength, dry connection is used to remove temporary supports and save temporary support costs, thereby improving project quality, increasing construction speed and saving construction time.

[0116] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

[0117] Although several specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present invention. Certain features described in the context of a separate embodiment may also be implemented in a single implementation in combination. On the contrary, the various features described in the context of a single implementation may also be implemented in multiple implementations individually or in any suitable sub-combination.

Claims

1. A prefabricated frame structure beam-column connection node, characterized in that: The beam-column connection node includes: The first precast column is a reinforced concrete column; The precast beam is a reinforced concrete beam, and its ends are connected with H-shaped steel beam connecting sections; A rectangular steel pipe for the column body is sleeved on the outer periphery of the column body of the first prefabricated column at the connection between the first prefabricated column and the prefabricated beam, and the length of the rectangular steel pipe for the column body is greater than the cross-sectional height of the prefabricated beam; Two column stiffening plates are embedded in the column rectangular steel tube in an upper and lower horizontally opposed manner, and are respectively aligned with the upper and lower edges of the cross-section of the H-shaped steel beam connecting section, and a steel bar through hole is opened on the two column stiffening plates corresponding to the longitudinal steel bar of the first prefabricated column, which is used to pass the longitudinal steel bar of the first prefabricated column, and a ventilation hole is opened in the center of the two column stiffening plates for pouring concrete to make the column concrete continuous; and The prefabricated beam is welded and / or bolted to the first prefabricated column so that the upper and lower edges of the cross-section of the H-beam connecting section are aligned with the two column body stiffening plates.

2. The beam-column connection node according to claim 1, characterized in that: The beam-column connection node also includes a column end connection piece, which is an H-shaped steel connection section, welded and fixed to the side of the column rectangular steel tube, and the upper and lower edges of the cross section of the H-shaped steel connection section are respectively aligned with the two column stiffening plates, and the webs of the H-shaped steel connection section and the H-shaped steel beam connection section are correspondingly provided with bolt holes, the H-shaped steel connection section is butt-jointed with the H-shaped steel beam connection section, and the webs are fixed by bolt connection, and the flanges are welded or bolted; or The column end connecting piece is one or two connecting plates, which are welded and fixed to the side of the rectangular steel tube of the column body. Bolt holes are opened on the connecting plate, and the web of the H-shaped steel beam connecting section is correspondingly opened with bolt holes. The connecting plate and the web of the H-shaped steel beam connecting section are fixed by bolts, and the upper and lower flanges of the H-shaped steel beam connecting section are welded and fixed to the rectangular steel tube of the column body.

3. The beam-column connection node according to claim 1, characterized in that: A beam end stiffening plate is welded between the upper and lower flanges and the web of the H-shaped steel beam connection section, a second steel bar through hole is opened on the beam end stiffening plate corresponding to the longitudinal steel bar of the prefabricated beam, and the longitudinal steel bar of the prefabricated beam is welded to the beam end stiffening plate at the second steel bar through hole or connected and fixed by nuts; and / or The beam end reinforcement stirrups are symmetrically arranged between the upper and lower flanges on both sides of the web of the H-shaped steel beam connection section, and the upper and lower ends of the beam end reinforcement stirrups are respectively welded and fixed to the upper and lower flanges; and / or Studs are vertically welded on the upper and lower flanges and / or webs of the H-beam connecting section.

4. The beam-column connection node according to claim 3, characterized in that: The beam end reinforcement stirrups are made of steel bars or steel plates, bent in a [ shape, with the opening facing inward, and the upper and lower ends are respectively welded and fixed to the upper and lower flanges of the H-shaped steel beam connection section.

5. A prefabricated frame structure, characterized in that: A beam-column connection node comprising the beam-column connection node according to any one of claims 1 to 4.

6. The prefabricated frame structure according to claim 5, characterized in that: Also included is a column-column connection node, the column-column connection node comprising: The first precast column is a reinforced concrete column; The second precast column is a reinforced concrete column, and The second prefabricated column is butt-connected to the first prefabricated column at a position 0.5 to 1.5 m above the prefabricated beam.

7. The prefabricated frame structure according to claim 6, characterized in that: The column-column connection node comprises: The two column ends are covered with rectangular steel pipes, which are respectively covered on the outer periphery of the column body at the connecting ends of the first prefabricated column and the second prefabricated column, and the length thereof exceeds the predetermined distance between the ends of the first prefabricated column and the second prefabricated column; Two column end stiffening plates are respectively horizontally embedded in the two column end outer jacket rectangular steel tubes, and three steel bar through holes are opened on the two column end stiffening plates corresponding to the longitudinal steel bars of the first prefabricated column and the second prefabricated column, and the longitudinal steel bars of the first prefabricated column and the second prefabricated column are welded to the column end stiffening plates at the three steel bar through holes or connected and fixed by nuts; The column end outer sleeve rectangular steel pipe connecting sleeve is sleeved inside the two column end outer sleeve rectangular steel pipes at the connection between the first prefabricated column and the second prefabricated column; and The rectangular steel pipes at the two column ends are flattened, tightened and fixed around the circumference by full penetration welding, or the rectangular steel pipes at the two column ends are fixed by a connecting plate and then welded or bolted.

8. The prefabricated frame structure according to claim 6, characterized in that: The column-column connection node comprises: The two column ends are embedded with H-shaped steel, which are respectively embedded in the column body at the connecting ends of the first prefabricated column and the second prefabricated column, and the length thereof exceeds the predetermined distance between the ends of the first prefabricated column and the second prefabricated column; Two column end sealing plates are respectively horizontally arranged at the ends of the first prefabricated column and the second prefabricated column and cover the ends of the first prefabricated column and the second prefabricated column, and four steel bar through holes are opened on the two column end sealing plates corresponding to the longitudinal steel bars of the first prefabricated column and the second prefabricated column, and the longitudinal steel bars of the first prefabricated column and the second prefabricated column are welded to the column end sealing plates at four places of the steel bar through holes or connected and fixed by nuts, and an H-shaped steel through hole is opened in the center of the two column end sealing plates, and the H-shaped steel embedded in the column end is welded and fixed to the column end sealing plates at the H-shaped steel through hole; and The two column ends are embedded with H-shaped steel flanges which are welded or bolted, and the webs are welded or bolted.

9. The prefabricated frame structure according to claim 6, characterized in that: The column-column connection node comprises: The two column ends are embedded with rectangular steel pipes, and the connecting ends of the first prefabricated column and the second prefabricated column are respectively embedded in the column body, and the outer wall thereof is welded and fixed to the longitudinal steel bars of the first prefabricated column and the second prefabricated column, and the length thereof exceeds the predetermined distance of the ends of the first prefabricated column and the second prefabricated column; The column end embedded rectangular steel pipe connecting sleeve is sleeved in the two column end embedded rectangular steel pipes at the connection between the first prefabricated column and the second prefabricated column; and The two column ends are embedded with rectangular steel pipes and fixed by full penetration welding, or the two column ends are embedded with rectangular steel pipes and fixed by connecting plates and then welded or bolted.

10. The prefabricated frame structure according to claim 6, characterized in that: Also included is a column-foundation beam-foundation connection node, the column-foundation beam-foundation connection node comprising: The first precast column is a reinforced concrete column; A column side connecting member, fixedly arranged on a side surface of the first prefabricated column; The foundation beam is a reinforced concrete beam; A foundation beam end connector, fixedly disposed at the end of the foundation beam, and fixedly connected to the column side connector by welding or bolts; A foundation beam shear key, fixedly arranged at the bottom of the foundation beam; The foundation is an independent foundation or a column pier, the foundation has a reserved shear groove, the foundation beam shear key is embedded in the shear groove and is fixed by secondary pouring of concrete or grouting; and The first prefabricated column is connected to the foundation beam by welding or bolts to transfer horizontal force, and the foundation beam is connected to the foundation by shear keys to transfer horizontal force and vertical force.

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