An assembled side column node connected by steel wedges

Abstract

The present invention discloses an assembled side column node connected by steel wedges, comprising: a first assembled node and a second assembled node, wherein the first assembled node and the second assembled node are fixedly connected by concrete; the first assembled node comprises a column unit and a first beam plate, wherein the first beam plate is provided with a first opening, and the column unit is placed at the first opening; the second assembled node comprises a column unit and two second beam plates, wherein the second beam plates are provided with a first opening, wherein the two beam plates are arranged in parallel to form a second opening, and the column unit is placed at the second opening, and the first beam plate, the second beam plate and the column unit are fixed respectively by steel wedges. The present invention has a reasonable force-bearing structure, a clear force transmission path, and is extremely simple to construct. It can be industrialized and mass-produced, and is detachable and recyclable, with high economic and environmental benefits.

Description

Technical Field

[0001] The present invention belongs to the technical field of prefabricated buildings, and in particular relates to a prefabricated side column node connected by steel wedges. Background Art

[0002] Traditional cast-in-place structures, as the mainstream structural form, have disadvantages such as long construction periods, low levels of industrialization, and severe environmental pollution, which are not in line with national energy conservation and emission reduction policies. Prefabricated and assembled buildings have been widely accepted at home and abroad in recent years due to their convenient construction, fast construction speed, and good environmental benefits, and are gradually replacing traditional cast-in-place structures. Among them, beam-column joints, as the main load-bearing parts, have become a research focus. Currently, prefabricated beam-column joint connections are divided into wet connections and dry connections. Wet connections are partial components prefabricated and connected on-site using cast-in-place concrete. Although the wet connection has better integrity, it has the disadvantages of difficult construction and difficulty in vibrating and compacting the concrete. Currently, dry connections are all prefabricated in the factory and connected on-site using bolts, prestressed steel strands, slot keys, welding, etc., which are characterized by simple construction, but have the problem of high precision requirements for prefabricated parts and poor ductility. Summary of the Invention

[0003] The purpose of the present invention is to provide a prefabricated side column node connected by steel wedges to solve the problems of high precision requirements and poor ductility of prefabricated parts of beam-column prefabricated nodes in the prior art.

[0004] To achieve the above object, the present invention provides a prefabricated side column node connected by steel wedges, comprising: a first prefabricated node and a second prefabricated node, wherein the first prefabricated node and the second prefabricated node are fixedly connected by concrete;

[0005] The first assembled node includes a column unit and a first beam plate. The first beam plate is provided with a first opening. The column unit is placed at the first opening. Two inner walls of the first opening extend inwardly and each is provided with a first groove. Several prefabricated component groups are prefabricated in the column unit. Each prefabricated component group includes a pair of prefabricated components. The prefabricated component groups are placed in the first groove. Through holes are provided in the column unit and the first beam plate. Steel wedges pass through the through holes to fix the first beam plate and the prefabricated component group on the column unit.

[0006] The second assembled node includes a column unit and two second beam plates. The second beam plates are provided with a first opening. Two inner walls of the first opening extend inwardly and each is provided with a first groove. The two second beam plates are arranged in parallel to form a second opening. The column unit is placed at the second opening. Several prefabricated component groups are prefabricated in the column unit. Each prefabricated component group includes a pair of prefabricated components. The prefabricated components are placed in the first groove. Through holes are provided in the column unit and the second beam plates. Steel wedges pass through the through holes to fix the second beam plates to the prefabricated component groups on the column unit.

[0007] The opening direction of the through hole is perpendicular to the opening direction of the first slot body, and the two first slot bodies are arranged vertically.

[0008] Optionally, the column unit includes an upper column and a lower column, and the upper column is snap-connected to the lower column.

[0009] Optionally, the prefabricated component group includes an upper prefabricated component and a lower prefabricated component, wherein the upper prefabricated component is partially embedded in the upper column, and the lower prefabricated component is partially embedded in the lower column.

[0010] Optionally, at least one fixing member is embedded in the first beam plate, and the fixing member is arranged parallel to the first trough body.

[0011] Optionally, fixing members are pre-embedded on both sides of the first trough body, and the depths of the two first trough bodies are the same.

[0012] Optionally, a fixing part is embedded in the second beam plate, and the fixing part is arranged parallel to the first trough body. The depths of the two first trough bodies on the second beam plate are different, wherein the number of fixing parts embedded in the first trough body with a lower trough body depth is less than the number of fixing parts embedded in the first trough body with a higher trough body depth.

[0013] Optionally, the upper column and the lower column are connected via a side buckle assembly, and the side buckle assembly includes a first side buckle and a second side buckle, the first side buckle is fixed to the lower end of the upper column, and the second side buckle is fixed to the upper end of the lower column.

[0014] Optionally, the upper column and the lower column are connected via a corner buckle assembly, which includes a first corner fastener and a second corner fastener. The first corner fastener is fixed to the lower end of the upper column, and the second corner fastener is fixed to the upper end of the lower column.

[0015] Optionally, the upper preform includes two vertically arranged first support plates, each of which is provided with a through hole; the lower preform includes two vertically arranged second support plates and a first flange plate, each of which is provided with a through hole, and the first flange plate is arranged vertically to the second support plate.

[0016] Optionally, the upper preform includes three first support plates, each of which is provided with a through hole, wherein two first support plates are in the same horizontal plane, and one support plate is perpendicular to the horizontal plane; the lower preform includes three second support plates and a second flange plate, each of which is provided with a through hole, wherein two first support plates are in the same horizontal plane, one support plate is perpendicular to the horizontal plane, and the second flange plate is arranged perpendicular to the second support plate.

[0017] The technical effects of the present invention are: the structure of the present invention has reasonable force, clear force transmission path, extremely simple construction, can be industrialized and mass-produced, and has the characteristics of being detachable and recyclable, with high economic and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 3D schematic diagram of the first assembled node provided by one embodiment of the present invention;

[0020] Figure 2 1 is a schematic exploded view of a three-dimensional structure of a first assembled node provided by one embodiment of the present invention;

[0021] Figure 3 This is a structural diagram of an upper column in a first assembled node provided by an embodiment of the present invention;

[0022] Figure 4 This is a schematic structural diagram of a lower column in a first assembled node provided by an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of a first beam-slab structure provided by an embodiment of the present invention;

[0024] Figure 6 is a cross-sectional view of a first beam plate provided in one embodiment of the present invention;

[0025] Figure 7 1 is a schematic structural diagram of an upper prefabricated component in a first assembled node provided by an embodiment of the present invention;

[0026] Figure 8 1 is a schematic structural diagram of a lower prefabricated part in a first assembled node provided by an embodiment of the present invention;

[0027] Figure 9 is a structural schematic diagram of a fixing member provided by an embodiment of the present invention;

[0028] Figure 10 1 is a schematic structural diagram of a steel wedge provided in one embodiment of the present invention;

[0029] Figure 11 This is a diagram of the steel wedge connection process of the first assembled node provided by one embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of a side buckle assembly provided by one embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram of a corner buckle assembly provided by one embodiment of the present invention;

[0032] Figure 14 is a schematic diagram of the three-dimensional structure of a second assembled node provided by one embodiment of the present invention;

[0033] Figure 15 is a three-dimensional exploded schematic diagram of a second assembled node provided by one embodiment of the present invention;

[0034] Figure 16 1 is a schematic structural diagram of an upper prefabricated component in a second assembled node provided by an embodiment of the present invention;

[0035] Figure 17 1 is a schematic structural diagram of a lower prefabricated part in a second assembled node provided by one embodiment of the present invention;

[0036] Figure 18 This is a schematic diagram of a second beam-slab structure provided by an embodiment of the present invention;

[0037] Figure 19 is a cross-sectional view of a second beam plate provided in one embodiment of the present invention;

[0038] Figure 20 It is a structural diagram of an upper column in a second assembled node provided by an embodiment of the present invention;

[0039] Figure 21 It is a structural diagram of the lower column in the second assembled node provided by one embodiment of the present invention;

[0040] Figure 22 1 is a diagram of the steel wedge connection process of the second assembled node provided by one embodiment of the present invention; reference numerals:

[0041] 1. Upper column; 2. Lower column; 3. First beam; 4. Steel wedge; 5. Upper prefabricated part; 5.1. First support plate; 6. Lower prefabricated part; 6.1. Second support plate; 6.2 First flange plate; 6.3 Second flange plate; 7. Fixing part; 8. Side buckle assembly; 8.1 First corner fastener; 8.2 Second corner fastener; 9. Corner buckle assembly; 9.1 First corner fastener; 9.2 Second corner fastener; 10. First trough; 11 Through hole; 12 Second beam. DETAILED DESCRIPTION

[0042] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] The following combination Figure 1-22 The present invention describes an assembled side column node using steel wedges for connection.

[0044] This embodiment provides a prefabricated side column node using a steel wedge connection, comprising: a first prefabricated node and a second prefabricated node, wherein the first prefabricated node and the second prefabricated node are fixedly connected by concrete;

[0045] like Figure 1-2 As shown, the first assembled node includes a column unit and a first beam plate. A first opening is provided on the first beam plate. The column unit is placed at the first opening. A first slot 10 is provided on each of the two inner walls of the first opening. Several prefabricated component groups are prefabricated in the column unit. Each prefabricated component group includes a pair of prefabricated components. The prefabricated component groups are placed in the first slot. Through holes 11 are provided in the column unit and the first beam plate. Steel wedges 4 pass through the through holes to fix the first beam plate 3 to the prefabricated component group on the column unit.

[0046] like Figure 14-15 As shown, the second assembled node includes a column unit and two second beam plates. The second beam plate is provided with a first opening. Two inner walls of the first opening extend inwardly and each is provided with a first trough 10. The two beam plates are arranged in parallel to form a second opening. The column unit is placed at the second opening. Several prefabricated component groups are prefabricated in the column unit. Each prefabricated component group includes a pair of prefabricated components. The prefabricated components are placed in the first trough 10. The column unit and the second beam plate are both provided with through holes 11. The steel wedge 4 passes through the through holes 11 to fix the second beam plate and the prefabricated component group on the column unit.

[0047] The opening direction of the through hole 11 is perpendicular to the opening direction of the first slot body 10 , and the two first slot bodies 10 are vertically arranged.

[0048] In an optional embodiment, the column unit includes an upper column 1 and a lower column 2, and the upper column 1 is snap-connected to the lower column 2.

[0049] In this embodiment, the upper column 1 and the lower column 2 are both made of concrete. Figure 3-4 As shown, the bottom of the upper column 1 is provided with a protrusion, and the shape of the protrusion can be spherical, hemispherical, cylindrical, tetrahedral structure, etc. At the same time, the top of the lower column 2 is provided with a groove that matches the shape and size of the protrusion, preferably a spherical or hemispherical groove. During installation, the upper column 1 is hoisted into the spherical groove of the lower column 2, and a temporary node is formed by gravity and the curvature in the groove. The first beam 3 is made of precast concrete. The first connecting portion is a rectangular opening opened on the inner side of the first beam 3, which can fit the column wall. The upper column 1 and the lower column 2 only need to overlap the contact surface, and no connection is required, so that the upper column 1, the lower column 2 and the first beam 3 can be fastened together.

[0050] The multi-layer structure is assembled by splicing the upper column 1 and the lower column 2 according to the above steps.

[0051] Furthermore, the upper column 1 and the lower column 2 are long enough to be installed with multiple first beams 3 to form a multi-layer floor structure.

[0052] Furthermore, the raised portion of the upper column 1 satisfies the following formula:

[0053]

[0054] Where: f vd is the shear strength of concrete; A c is the end cross-sectional area.

[0055] In an optional embodiment, the prefabricated component group includes an upper prefabricated component and a lower prefabricated component, wherein the upper prefabricated component is partially embedded in the upper column, and the lower prefabricated component is partially embedded in the lower column.

[0056] In this embodiment, the upper prefabricated part 5 and the lower prefabricated part 6 are both made of steel plates, wherein the single-side extended length of the lower prefabricated part 6 is at least half of the beam height, and the width does not exceed the beam width.

[0057] Furthermore, the upper preform 5 and the lower preform 6 meet the following formula:

[0058]

[0059] f v b g h g ≥N g

[0060] Where: f d is the design value of the tensile strength of the steel plate; f v is the design value of the shear strength of the steel plate; b g is the thickness of the steel plate; h g is the height of the steel plate;

[0061] M g is the design value of the bending moment; N g is the design value of shear force;

[0062] in:

[0063]

[0064]

[0065] Where: A s is the area of ​​unilateral tensile reinforcement; f sd is the design value of tensile strength of the tensile reinforcement;

[0066] ρ sv is the stirrup reinforcement ratio f sv is the design value of the tensile strength of the stirrups; L1 is the horizontal distance from the tensile reinforcement to the centerline of the column; L2 is the horizontal distance from the center of the steel wedge to the centerline of the column; b is the column width; h1 is the vertical distance from the center of the steel wedge to the upper edge of the steel plate; h2 is the vertical distance from the center of the steel wedge to the lower edge of the steel plate;

[0067] In an optional embodiment, if Figure 5-6 As shown, at least one fixing member 7 is embedded in the first beam plate 3 , and the fixing member 7 is arranged parallel to the first trough body 10 .

[0068] In this embodiment, Figure 9 As shown, the fixing member 7 is made of a steel plate, and at least two through holes 11 are opened on the fixing member 7. At least two through holes 11 are opened on the first beam plate 3. During installation, the steel wedge 4 passes through the through holes on the first beam plate 3 and the through holes on the fixing member 7 in sequence to fix the upper prefabricated part 5 and the lower prefabricated part 6.

[0069] In an optional embodiment, fixing members 7 are pre-embedded on both sides of the first trough body 10 , and the depths of the two first trough bodies 10 are the same.

[0070] In an optional embodiment, if Figure 12 As shown, the upper column and the lower column are connected by a side buckle assembly, which includes a first side buckle and a second side buckle. The first side buckle is fixed to the lower end of the upper column, and the second side buckle is fixed to the upper end of the lower column. In this embodiment, the first side buckle is a pull rod and the second side buckle is a pull buckle.

[0071] In an optional embodiment, if Figure 13 As shown, the upper column and the lower column are connected by a corner fastener assembly, which includes a first corner fastener and a second corner fastener. The first corner fastener is fixed to the lower end of the upper column, and the second corner fastener is fixed to the upper end of the lower column. In this embodiment, the first corner fastener is a pull rod and the second corner fastener is a pull buckle.

[0072] During construction, the upper column 1 is hoisted into the spherical notch of the lower column 2, forming a temporary joint through gravity and the curvature of the notch. A first beam plate 3 is then hoisted onto the first flange plate 6.1 of the lower prefabricated component 6. The right-angled groove inside the first beam plate 3 is pressed against the column wall, and the bottom of the beam is pressed against the flange plate, providing temporary support and force transmission. The lower prefabricated component 6 is then snapped into the rectangular opening inside the first beam plate 3. At this point, the height of the through hole 11 in the lower prefabricated component 6 is slightly lower than the height of the through hole 11 in the first beam plate 3, while the height of the through hole 11 in the upper prefabricated component 5 is slightly higher than the height of the upper through hole 11 in the first beam plate 3.

[0073] like Figure 10-11 As shown, two steel wedges 4 are first inserted into each lower through-hole 11 of the first beam slab 3. The steel wedges 4 are hammered until they are completely against the outer frame of the notch and cannot move. Nuts are then screwed onto one end of each steel wedge 4 to lock them together and prevent them from slipping, thereby pulling the first beam slab 3 into the lower column 2. The same steps are then repeated in each upper through-hole 11 of the first beam slab 3 to pull the upper column 1 toward the lower column 2 and the first beam slab 3. Specifically, the steel wedges 4 have a top slope. As they are driven into the notch, they press against the upper end of the notch of the lower prefabricated component 6 and the lower end of the lower notch of the first beam slab 3, gradually tightening the pressure until the lower column 2 and the first beam slab 3 are firmly connected. The steel wedges 4 also press against the lower end of the notch of the upper prefabricated component 5 and the upper end of the upper notch of the first beam slab 3, gradually tightening the pressure until the upper column 1 and the first beam slab 3 are firmly connected. The method described above allows the upper column 1, lower column 2, and first beam slab 3 to be combined to form a secure joint under the tightening action of steel wedges 4. The height difference between the notches of the upper and lower prefabricated components 5, 6, and first beam slab 3 is x, and the slope angle of the steel wedge is α. To ensure sufficient safety margins in the joint, the notch height difference and the steel wedge slope angle can be adjusted during design to make the joint more secure.

[0074] After the connection is completed, insert the pull rod of the side buckle assembly 8 into the U-shaped groove of the buckle, and insert the pull rod of the corner buckle assembly 9 into the U-shaped groove of the buckle. The lower end of the pull rod passes through the bolt hole of the steel plate under the buckle, screw on the nut to prevent slippage, press down the buckle handle, and fasten the upper column 1 and the lower column 2 together. Follow the above steps to operate, through the steel wedge through, and tighten the buckle, so that the upper column 1, the lower column 2 and the first beam plate 3 can become a whole, forming a tight system. The multi-layer structure is spliced ​​according to the above steps.

[0075] When disassembling, unscrew the nut at one end of the steel wedge, knock out the steel wedge, unscrew the nut at the end of the pull rod, loosen the buckle, and unload the structure in sequence.

[0076] In this embodiment, only the contact surfaces between the upper column 1 and the lower column 2 need to be overlapped, and no connection is required. The upper column 1, the lower column 2 and the first beam 3 can be fastened together on the inside only by piercing the steel wedge 4. On the outside, the upper column 1 and the lower column 2 can be fastened together by adjusting the length of the pull rod and pressing down the pull buckle handle to form an L-shaped node. The structure is quickly formed and easy to construct. The production precision requirements for prefabricated components are low, and industrial mass production can be carried out. It has good integrity and safety, and after releasing the fastening force of the steel wedge, the structural components can be disassembled and reused.

[0077] In an optional embodiment, if Figure 18-21 As shown, a fixing member 7 is pre-embedded in the second beam plate 12. The fixing member 7 is arranged parallel to the first trough 10. The two first troughs 10 on the second beam plate 12 have different depths. The number of fixing members embedded in the first trough with a lower depth is less than that in the first trough with a higher depth. For example, the depth of the first trough on the side where the fixing member is to be embedded can be twice that of the other first trough.

[0078] In an optional embodiment, if Figure 7-8 As shown, the upper preform includes two vertically arranged first support plates, each of which is provided with a through hole; the lower preform includes two vertically arranged second support plates and a first flange plate, each of which is provided with a through hole, and the first flange plate is vertically arranged to the second support plate.

[0079] In an optional embodiment, if Figure 16-17 As shown, the upper prefabricated part includes three first support plates, each of which is provided with a through hole, wherein two first support plates are in the same horizontal plane, and one support plate is perpendicular to the horizontal plane; the lower prefabricated part includes three second support plates and a second flange plate, each of which is provided with a through hole, wherein two first support plates are in the same horizontal plane, one support plate is perpendicular to the horizontal plane, and the second flange plate is arranged perpendicular to the second support plate.

[0080] During construction, the upper column 1 is hoisted into the spherical notch of the lower column 2, forming a temporary joint through gravity and the curvature of the notch. The two second beams 12 are then hoisted onto the second flange 6.2 on the same side of the lower prefabricated component 6. The right-angled grooves on the inner sides of the second beams 12 are pressed against the column walls, and the bottoms of the beams are pressed against the flanges, providing temporary support and force transmission. The lower prefabricated component 6 is then snapped into the rectangular opening on the inner sides of the second beams 12. At this point, the through-hole 11 of the lower prefabricated component 6 is slightly lower than the lower through-hole 11 in the second beam 12, while the through-hole 11 of the upper prefabricated component 5 is slightly higher than the upper through-hole 11 in the second beam 12.

[0081] like Figure 22 As shown, first, two steel wedges are inserted through each lower through-hole 11 of the second beam plate 12. The steel wedges are hammered until they completely rest against the outer frame of the slot and cannot move. Nuts are then screwed onto one end of each steel wedge to prevent them from slipping, and the second beam plate 12 is pulled toward the lower column 2. Then, the same steps are followed in each upper slot through-hole 11 of the second beam plate 12 to pull the upper column 1 toward the lower column 2 and the second beam plate 12.

[0082] Specifically, the upper prefabricated part 5 and the lower prefabricated part 6 are inserted into the inner rectangular opening so that the rounded rectangular notches of the upper prefabricated part 55 and the lower prefabricated part 6 are aligned with the second beam plate 12. The steel wedge 4 has a certain slope and can be hammered inward to play a compacting role. Two steel wedges 4 are used to penetrate the rounded rectangular notches to compact the upper column 1 and the lower column 2 with the adjacent second beam plate 12 through the upper prefabricated part 5 and the lower prefabricated part 6, connecting them into a unified whole. One end of the steel wedge 4 is screwed with a nut to prevent the steel wedge 4 from slipping. The pull rod is inserted into the upper steel plate of the buckle, and the lower end is passed through the bolt hole of the lower steel plate of the buckle. The nut is screwed on to prevent slippage. The buckle handle is pressed down to compact the upper column 1 and the lower column 2 and connect them into one. According to this method, a multi-layer structure can be hoisted and spliced. During hoisting, temporary supports can be used for fixing to ensure the safety of the structure.

[0083] The rounded rectangular notch of the lower prefabricated part 6 is slightly lower than the height of the lower notch in the second beam plate 12, while the rounded rectangular notch of the upper prefabricated part 5 is slightly higher than the height of the upper notch in the second beam plate 12. The steel wedge 4 has a top slope. During the process of driving the steel wedge 4 into the notch, the steel wedge 4 will press against the upper end of the notch of the lower prefabricated part 6 and the lower end of the lower notch of the second beam plate 12, gradually tightening until the lower column 2 and the second beam plate 12 are firmly spliced ​​together. The steel wedge 4 will press against the lower end of the notch of the upper prefabricated part 5 and the upper end of the upper notch of the second beam plate 12, gradually tightening until the upper column 1 and the second beam plate 12 are firmly spliced ​​together. The method can combine the upper column 1, the lower column 2 and the second beam plate 12 to form a solid joint under the tightening action of the steel wedge 4. The height difference between the notch of the upper prefabricated part 5, the lower prefabricated part 6 and the second beam plate 12 is x, and the slope angle of the steel wedge is α. To ensure that the node has sufficient safety reserve, the notch height difference and the slope angle of the steel wedge can be adjusted during design to make the node tighter.

[0084] Once the connection is complete, insert the tie rod of the side buckle assembly 8 into the U-shaped groove of the buckle. Insert the lower end of the tie rod through the bolt hole in the steel plate below the buckle. Tighten the nut to prevent slippage. Press the buckle handle down to secure the upper column 1 and lower column 2 together. Following these steps, by piercing the steel wedges and tightening the buckle, the upper column 1, lower column 2, and second beam plate 12 become one, forming a tight system. Multi-layer structures are assembled according to the above steps.

[0085] When disassembling, unscrew the nut at one end of the steel wedge, knock out the steel wedge, unscrew the nut at the end of the pull rod, loosen the buckle, and unload the structure in sequence.

[0086] In this embodiment, only the contact surfaces between the upper column 1 and the lower column 2 need to be overlapped, and no connection is required. The upper column 1, the lower column 2 and the first beam 3 can be fastened together on the inside only by piercing the steel wedge 4. On the outside, the upper column 1 and the lower column 2 can be fastened together by adjusting the length of the pull rod and pressing down the pull buckle handle to form a T-shaped node. The structure is quickly formed and easy to construct. The production precision requirements for prefabricated components are low, and industrial mass production can be carried out. It has good integrity and safety, and after releasing the fastening force of the steel wedge, the structural components can be disassembled and reused.

[0087] In an optional embodiment, the steel wedge complies with the following formula:

[0088]

[0089]

[0090] Where: f t is the design value of the tensile strength of the steel wedge; A x is the area of ​​the steel wedge; N x is the shear bearing capacity of the steel wedge;

[0091] in:

[0092] N x =min{2A x f v ,db g f d}

[0093] Where: d is the height of the steel wedge; f d is the design value of the tensile strength of the steel wedge; f v is the design value of the shear strength of the steel wedge.

[0094] In an optional embodiment, the pull plates of the side buckle assembly and the corner buckle assembly conform to the following formula:

[0095]

[0096] Where: f d is the design value of tensile strength of the plate steel; f v is the design value of shear strength of the tension plate steel; b k is the height of the pull plate; h k is the width of the pull plate; d1 is the width of the pull plate slot; d2 is the height of the pull plate slot; t is the thickness of the pull plate; and n is the number of pull plates on one side of the column.

[0097] Furthermore, the first flange plate 6.2 and the second flange plate 6.3 are both provided with holes for stirrups and steel bars.

[0098] Furthermore, the cross-sections of the upper and lower columns are both rectangular, and their cross-sectional dimensions can be changed according to specific actual needs without any specific requirements; the upper and lower prefabricated parts are rectangular steel plates, and their cross-sectional dimensions can be selected according to actual conditions and specifications without any specific requirements.

[0099] Furthermore, the size of the steel wedge, the size of the rounded rectangular notch, the size of the side buckles and corner buckles, and the number of buckles used are all selected according to actual needs and no specific requirements are made.

[0100] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0101] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0102] In the description of this specification, the description with reference to the terms "one embodiment", "first aspect embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A prefabricated side column node connected by steel wedges, characterized in that: include: A first prefabricated node and a second prefabricated node, wherein the first prefabricated node and the second prefabricated node are fixedly connected by concrete; The first assembled node includes a column unit and a first beam plate. The first beam plate is provided with a first opening. The column unit is placed at the first opening. Two inner walls of the first opening extend inwardly and each is provided with a first groove. Several prefabricated component groups are prefabricated in the column unit. Each prefabricated component group includes a pair of prefabricated components. The prefabricated component groups are placed in the first groove. Through holes are provided in the column unit and the first beam plate. Steel wedges pass through the through holes to fix the first beam plate and the prefabricated component group on the column unit. The second assembled node includes a column unit and two second beam plates. The second beam plates are provided with a first opening. Two inner walls of the first opening extend inwardly and each is provided with a first groove. The two second beam plates are arranged in parallel to form a second opening. The column unit is placed at the second opening. Several prefabricated component groups are prefabricated in the column unit. Each prefabricated component group includes a pair of prefabricated components. The prefabricated components are placed in the first groove. Through holes are provided in the column unit and the second beam plates. Steel wedges pass through the through holes to fix the second beam plates to the prefabricated component groups on the column unit. The opening direction of the through hole is perpendicular to the opening direction of the first slot body, and the two first slot bodies are arranged vertically; The column unit includes an upper column and a lower column, and the upper column is connected to the lower column with a buckle; The prefabricated component group includes an upper prefabricated component and a lower prefabricated component, wherein the upper prefabricated component is partially embedded in the upper column, and the lower prefabricated component is partially embedded in the lower column; At least one fixing member is embedded in the first beam plate, and the fixing member is arranged parallel to the first trough body; The upper prefabricated component includes two vertically arranged first support plates, each of which is provided with a through hole; the lower prefabricated component includes two vertically arranged second support plates and a first flange plate, each of which is provided with a through hole, and the first flange plate is arranged vertically to the second support plate; The upper prefabricated part includes three first support plates, each of which is provided with a through hole, wherein two first support plates are in the same horizontal plane, and one support plate is perpendicular to the horizontal plane; the lower prefabricated part includes three second support plates and a second flange plate, each of which is provided with a through hole, wherein two first support plates are in the same horizontal plane, one support plate is perpendicular to the horizontal plane, and the second flange plate is arranged perpendicular to the second support plate.

2. The prefabricated side column node using steel wedge connection according to claim 1 is characterized in that: Fixing members are pre-buried on both sides of the first trough body, and the depths of the two first trough bodies are the same.

3. The assembled side column node using steel wedge connection according to claim 1 is characterized in that: A fixing piece is embedded in the second beam plate, and the fixing piece is arranged parallel to the first trough body. The depths of the two first trough bodies on the second beam plate are different, wherein the number of fixing pieces embedded in the first trough body with a lower trough body depth is less than the number of fixing pieces embedded in the first trough body with a higher trough body depth.

4. The assembled side column node using steel wedge connection according to claim 1 is characterized in that: The upper column and the lower column are connected by a side buckle assembly, and the side buckle assembly includes a first side buckle and a second side buckle. The first side buckle is fixed to the lower end of the upper column, and the second side buckle is fixed to the upper end of the lower column.

5. The prefabricated side column node using steel wedge connection according to claim 1, characterized in that: The upper column and the lower column are connected by an angle buckle assembly, and the angle buckle assembly includes a first angle fastener and a second angle fastener. The first angle fastener is fixed to the lower end of the upper column, and the second angle fastener is fixed to the upper end of the lower column.

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