CN114575533A - Modularized prefabricated assembled beam-column combined node adopting bolt connection - Google Patents

Abstract

The invention discloses a modular prefabricated beam-column combination node connected by bolts, comprising an upper column unit, a central component unit, a lower column unit and a beam component unit; the central component unit includes a central body, an upper connecting plate and a The lower connecting plate, the side of the central body has a flat side wall, the upper and lower parts are provided with an upper connecting plate and a lower connecting plate, the upper connecting plate is smaller than the lower connecting plate, and is symmetrical on the outer sides of the upper connecting plate and the lower connecting plate A slot-shaped connecting plate is fixed at intervals, and a plate-shaped connecting plate is arranged on the side of the central body at intervals, and a horizontal splicing gap is formed between the two plate-shaped connecting plates; the column units all include a fixed plate and a vertical splicing body; the horizontal splicing body includes upper wings Plate, lower wing plate, web plate and beam frame; the upper part and lower part of the web plate are fixedly connected with the upper wing plate and the lower wing plate respectively, and the outer end of the connection between the lower wing plate and the web plate is provided with a splicing interface; the assembly relationship standard of the present invention , The structure is stable, the construction quality is guaranteed, and the construction speed is greatly accelerated.

Description

A modular prefabricated beam-column composite joint using bolted connection

technical field

The invention belongs to the technical field of building structures, and in particular relates to a modular prefabricated assembled beam-column combination node connected by bolts.

Background technique

With the social development and economic growth of our country, the construction industry has also undergone new changes, and new types of buildings and construction methods have emerged one after another. At the same time, the construction industry is also faced with thorny problems such as labor shortage and rising labor costs year by year, followed by various environmental problems that accompany construction. In the national long-term development plan, it is clearly pointed out that vigorously develop green and environmentally friendly construction production methods. Undoubtedly, prefabricated buildings have significant advantages in this regard, but prefabricated buildings, especially the low connection strength of nodes, insufficient stability, and complicated installation seriously restrict the development quality of prefabricated buildings. It is very important to propose a connection form of prefabricated components that is easy to install, safe and reliable.

Since the concrete structure is based on the joint work of steel and concrete to bear the external load, the node connection is particularly important. At present, after continuous improvement and development, there have been many connection forms, but these connection forms are difficult to achieve safety and reliability, relatively simple structure, convenient connection and other indicators at the nodes with complex structure and force. Especially welding at the construction site brings inconvenience to the construction, and increases the difficulty of the strength, quality and stability of the weld, and it is difficult to ensure whether the connection nodes are effectively connected. Based on this, a modular prefabricated bolted connection is studied. Fabricated beam-column combination joints are necessary.

SUMMARY OF THE INVENTION

In view of the defects and problems existing in the existing equipment, the present invention provides a modular prefabricated prefabricated beam-column composite node connected by bolts, which effectively solves the need for on-site welding in the construction of the prefabricated beam-column nodes existing in the existing equipment. Especially when it is difficult to construct in high places.

The solution adopted by the present invention to solve the technical problem is as follows: a modular prefabricated beam-column composite node connected by bolts, including an upper column unit, a central component unit, a lower column unit and a beam component unit; the central component unit It includes a center body, an upper connecting plate and a lower connecting plate; the side of the center body has a flat side wall, and the upper and lower parts of the center body are provided with an upper connecting plate and a lower connecting plate, the upper connecting plate is smaller than the lower connecting plate, and Slotted connecting plates are fixed symmetrically on the outer sides of the upper connecting plate and the lower connecting plate, and a vertical splicing gap is formed between the two slotted connecting plates; A horizontal splicing gap is formed between the connecting plates; the upper column unit and the lower column unit have the same structure, and both include a fixing plate and a vertical splicing body; the vertical splicing body is an I-shaped structure, which is fixed on the inner side of the fixing plate and fixed The outer side of the plate is provided with a vertical beam frame; the vertical splicing body is nested in the vertical splicing gap, and corresponding screw holes are arranged on the vertical splicing body and the web plate and the wing plate of the groove-shaped connecting plate, and the screw holes After one-to-one correspondence, they are fixed by connecting bolts; the beam member unit includes a beam frame and a transverse splicing body; the transverse splicing body includes an upper wing plate, a lower wing plate, a web plate and a beam frame; the upper part of the web plate is The lower part is respectively fixedly connected with the upper wing plate and the lower wing plate, wherein the outer end of the connection between the lower wing plate and the web plate is provided with a splicing interface, and the inner side of the transverse splicing body is fixed with a beam frame; the web plate is nested in the transverse splicing gap , the upper wing plate is located on the upper part of the plate-shaped connecting plate and the upper connecting plate, and the upper wing plate is fixedly connected with the upper connecting plate through the corresponding screw holes, and the lower wing plate is located on the lower connecting plate, and is connected with the plate-shaped plate at the web Corresponding screw holes are arranged on the upper plate, the lower wing plate and the lower connecting plate, and the screw holes are in one-to-one correspondence and then fixed by connecting bolts.

Further, the inner side of the plate-shaped connecting plate is provided with an escape groove, and the upper connecting plate is matched and seated in the escape groove.

Further, the edge of the upper wing protrudes from the web, the lower wing is flush with the web, the protruding part of the upper wing is provided with screw holes, and the screw holes are distributed between the web and the plate connecting plate. sides.

Further, a limit block is provided on the upper connecting plate, and the limit block is matched and installed in the horizontal splicing gap.

Further, the central body has a cube structure, the inner side of the central body is provided with a cross-shaped cross plate, and the central body, the cross plate, the upper connecting plate and the lower connecting plate are provided with through holes that can communicate with each other.

Further, the fixed position of the cross plate corresponds to the horizontal splicing gap, and its thickness is the same as the horizontal splicing gap.

Further, a reinforcing seat is provided between the side surface of the central body and the upper connecting plate and the lower connecting plate.

Further, the upper connecting plate and the lower connecting plate are provided with corresponding cut corners, so that the edges of the upper connecting plate and the lower connecting plate are flush with the upper wing plate and the lower wing plate.

Further, corner seats are provided on the outer sides of the upper connecting plate and the lower connecting plate, and the vertical beam frame is fixed on the corner seats.

Further, the two sides of the web are fixed with multi-layer rib plates, and the beam frame is fixed on the rib plates.

Beneficial effects of the present invention: Compared with the prior art, the present invention has the following beneficial effects:

1) Transforming the connection problem of prefabricated components into a steel structure connection problem, reducing the difficulty of on-site construction, and effectively ensuring the connection quality, is conducive to the development and promotion of prefabricated buildings.

2) The connection structure of each side of the central member node is the same as that of the beam member unit, and the structural form is flexible, which is convenient for engineering use.

3) The present invention provides a connection scheme between the steel structure node and the reinforced concrete, which realizes the effective bonding of the two and enables the two to work together.

4) Each module is prefabricated in the factory and connected by bolts during construction, which can effectively avoid various defects caused by on-site welding.

5) The dimensions of bolts, I-beams, channel steels, angle steels, etc. in the present invention can be flexibly designed according to engineering requirements, construction characteristics and other factors.

6) When each module is consolidated, it is in the form of splicing and bolting between steel plates, which improves the stability of the connection and the convenience of operation.

Therefore, the present invention proposes a modular prefabricated beam-column combination node connected by bolts with the central body as the basic component. By rationally arranging the structural components, zero welding on the construction site is realized, and the upper, lower, left, and right sides of the central body are installed. There are splicing nodes, and the splicing nodes are all provided with reserved splicing gaps, and the horizontal splicing body and the vertical splicing body are inserted into them correspondingly, so that the positioning and installation can be realized, the assembly relationship is standard, and the structure is stable, which ensures the construction quality. The construction speed is greatly accelerated, and each unit module can be prefabricated in the factory, and then transported to the construction site for assembly and splicing with bolts.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic structural diagram of the central member unit and the beam member unit.

Figure 3 is a schematic structural diagram of the central component unit.

FIG. 4 is a schematic diagram of the structure of the cross plate.

FIG. 5 is a schematic structural diagram of the central member unit and the upper column unit.

FIG. 6 is a schematic structural diagram of a beam member unit.

The labels in the figure are: 1 is the center body, 2 is the upper connecting plate, 3 is the lower connecting plate, 4 is the groove connecting plate, 5 is the vertical splicing body, 6 is the fixing plate, 7 is the corner seat, and 8 is the vertical Splicing gap, 9 is the plate connecting plate, 10 is the transverse splicing gap, 11 is the reinforcement seat, 12 is the web, 13 is the upper wing plate, 14 is the lower wing plate, 15 is the splicing interface, 16 is the rib plate; 17 is the transparent plate Hole, 18 is the way slot; 19 is the cross plate, 20 is the steel bar, and 21 is the stirrup.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment 1: This embodiment aims to provide a modular prefabricated prefabricated beam-column combination node using bolt connection, which is mainly used to realize bolt-assembled connection of beam-column nodes. For the current prefabricated connection structure, its structural The stability is poor, the strength of the bolt connection is too dependent, and the support beam needs to be realized when the bolts are connected, so that the bolt connection is performed after the bolt holes correspond, and the construction is troublesome. Based on this, this embodiment provides a bolt connection. The modular prefabricated beam-column combination joint.

As shown in the figure, a modular prefabricated beam-column combination node connected by bolts includes an upper column unit, a central component unit, a lower column unit and a beam component unit; the central component unit is an integrally formed structure, which is arranged in the center , the lower part is connected to the lower column unit, the upper part is connected to the upper column unit, the side surface is connected to the beam member unit, and the central member unit is a regular polygon structure. The shape is also available.

This embodiment specifically provides a prefabricated joint structure connecting prefabricated columns and prefabricated beams and prefabricated columns, so as to solve the problems of relatively low shear strength and relatively low stability of the prefabricated joint structure. The node mainly includes central node members in six directions, I-shaped interface precast concrete columns, and I-shaped interface precast concrete beams with dislocated upper and lower flanges. The six-direction central member has a total of six parts that can be connected, the upper and lower sides are used for column-to-column connection, and the horizontal four identical surfaces are used for column-to-beam connection. The connection methods are all bolted and fixed. In the present invention, the number of connecting nodes, joints, I-shaped steel, channel steel, angle steel and other dimensions of bolts and central components can be adjusted according to building requirements, structural characteristics and operating space. The design is flexible, the factory can be modularized and mass-produced, and the construction operability is strong, which realizes the effective connection of the nodes of the fully prefabricated hybrid frame, which is conducive to the rapid and healthy development of the prefabricated building.

In the specific structure, the central component unit includes a central body 1, an upper connecting plate 2 and a lower connecting plate 3; the central body 1 is a cube structure, the side of the central body 1 has flat side walls, and the upper and lower parts of the central body 1 are provided with upper connecting plates 2 and the lower connecting plate 3, the upper connecting plate 2 is smaller than the lower connecting plate 3, and a slot-type connecting plate 4 is fixed at symmetrical intervals on the outer sides of the upper connecting plate 2 and the lower connecting plate 3, and between the two slot-type connecting plates 4 A vertical splicing gap 8 is formed; during the specific implementation, the slotted connecting plate 4 is in a U-shaped structure, and the two slotted connecting plates 4 are spaced to form an I-shaped butt joint, which is located between the upper connecting plate and the lower connecting plate. In the middle area, there are two bolt holes on each of the three plates of the slotted connection plate.

The upper column unit and the lower column unit have the same structure, and both include a fixing plate 6 and a vertical splicing body 5; the vertical splicing body 5 is an I-shaped structure, which is fixed on the inner side of the fixing plate, and the outer side of the fixing plate 6 is provided with a vertical beam The vertical splicing body 5 is nested in the vertical splicing gap 8, and corresponding screw holes are provided on the vertical splicing body 5 and the web and the wing plate of the slotted connecting plate 4, and the screw holes pass through after one-to-one correspondence. The connecting bolts are fixed; thus the webs of the vertical splicing body 5 are nested and fixed in the vertical splicing gap through the through bolts, and are clamped and positioned by the two slotted connecting plates, and the wings are located on the outside of the slotted connecting plates, And through the corresponding connecting bolts to be fixed, and then the vertical splicing body is nested and can be pre-positioned nested on the outside of the grooved connecting plate. When installing and fixing, it can be directly assembled to achieve precise positioning and assembly.

During implementation, the length of the steel structure joints of the upper column unit and the lower column unit is the same as the length of the upper and lower grooved connection plates of the central member, the back of the combination is attached to the surface, the reserved bolt holes are aligned, and the upper and lower connection plates are connected. The outer side is provided with a corner seat 7, and the vertical beam frame is fixed on the corner seat 7.

The side of the center body 1 is provided with a plate-shaped connecting plate 9 at intervals, and a transverse splicing gap 10 is formed between the two plate-shaped connecting plates 9; On the outer side wall, the upper and lower connecting plates abut on the upper connecting plate 2 and the lower connecting plate 3. Since the upper connecting plate is smaller than the lower connecting plate, the upper part of the plate-shaped connecting plate is exposed to form a pallet, which provides a pre-requisite for installing the transverse beam frame. Solid foundation.

The beam member unit includes a beam frame and a transverse splicing body; the transverse splicing body includes an upper wing plate 13, a lower wing plate 14, a web 12 and a beam frame; the upper and lower parts of the web 12 are respectively connected with the upper wing plate 13 and the lower wing plate 14. Fixed connection, wherein the outer end of the connection between the lower wing plate 14 and the web 12 is provided with a splicing port 15, and the inner side of the transverse splicing body is fixed with a beam frame. 16. The beam frame is fixed on the rib plate 16, a plurality of steel bars 20 are arranged on the beam frame, and the steel bars 20 are connected by stirrups.

The beam member unit is obtained by connecting the steel bars in the beam to the I-beam through the reinforcing rib and bolts, and pouring concrete that does not exceed the position of the connecting bolt steel plate. The upper flange of the I-beam is longer than the lower flange, and the upper and lower flanges and the web Bolt holes are reserved, and there is a rectangular cross-section fractured joint at the lower flange of the web.

In specific implementation, the linear distance between the outer sides of the two steel plates on any side of the central member is the cross-sectional width of the rectangular section of the lower flange of the I-beam web of the beam member unit; the interval length between the two steel plates is the I-beam web plate of the beam member unit. The thickness of the web is nested in the transverse splicing gap, and the web is combined with the two steel plates on the side of the center member to achieve surface-to-surface fit and the reserved bolt holes are aligned; The lower parts of the steel plates overlap, so that the lower flange groove of the beam member unit is close to the two steel plates on the side of the central member. The upper wing plate is located on the upper part of the plate-shaped connecting plate and the upper connecting plate, and the upper wing plate and the upper connecting plate are fixedly connected through the corresponding screw holes, and the lower wing plate is located on the lower connecting plate, and is connected between the web and the plate-shaped connecting plate. Corresponding screw holes are arranged on the upper and lower wing plates and the lower connecting plate, and the screw holes are in one-to-one correspondence and then fixed by connecting bolts.

This embodiment is used in layered construction. First, assemble the beam frame, place the lower wing plate on the lower connecting plate, correspond the web to the horizontal splicing gap, and push it inward, and then connect the connecting bolts corresponding to the through screw holes to realize the beam frame. Then assemble the remaining beam frames one by one, and then construct the vertical beam frame, nest the I-shaped vertical splicing body in the vertical splicing gap, and then fix the connecting bolts, lift up layer by layer, and then install the beam column. The outer formwork of the joint is poured into it, and the concrete can fill the beam-column joint through the gap, and finally the formwork can be removed.

Embodiment 2: This embodiment is basically the same as Embodiment 1, and the difference is that: this embodiment further describes the connection structure between the plate-shaped connecting plate and the upper connecting plate.

In this embodiment, the inner side of the plate-shaped connecting plate is provided with an escape groove 18 , the upper connecting plate 2 is matched and seated in the escape groove 18 , and the upper part of the upper connecting plate 2 is flush with the upper part of the plate-shaped connecting plate.

The edge of the upper wing plate 13 protrudes from the web plate 12, the lower wing plate 14 is flush with the web plate 12, and the protruding part of the upper wing plate is provided with screw holes, and the screw holes are distributed on the two sides of the web plate and the plate-type connecting plate. The upper and lower horizontal steel plates of the central member are respectively fitted with the upper and lower flanges of the beam member unit, and the positions of the reserved bolt holes of the central member are respectively aligned with the positions of the reserved bolt holes of the beam member unit.

In this embodiment, both the upper wing plate and the lower wing plate can be positioned, and the webs are clamped by the two-plate connecting plates, the overall structure is stable, and the connection strength is high.

Embodiment 3: This embodiment is basically the same as Embodiment 1, and the difference lies in: this embodiment sets a limit block on the upper connecting plate in this embodiment.

During the implementation of this embodiment, the two-plate connecting plates are easily deformed, which makes the connection difficult during installation. In this embodiment, in order to keep the distance between the two-plate connecting plates, a limit block is arranged between the two. A limit block is arranged on the upper connecting plate, and the limit block is matched and installed in the horizontal splicing gap.

Embodiment 4: This embodiment is basically the same as Embodiment 1, and the difference is: this embodiment further describes the structure of the central body.

In this embodiment, the inner side of the central body is provided with a cross-shaped cross plate 19, and the central body 1, the cross plate 19, the upper connecting plate 2 and the lower connecting plate 3 are provided with through holes 17 that can communicate with each other. The through holes are not only used for The overall weight is reduced, and the beam-column joints can be penetrated at the same time.

Holes are dug up, down and around the central component, and the inside of the component is a cross-shaped intersecting steel plate for hollowing. After the beam-column joint is assembled, it is necessary to support the formwork on the outside of the beam-column joint, and then fill with concrete. The concrete can fill the beam-column joints, so that the beam-column joints can be fully connected with the concrete. Through holes are set on the beam-column joints, and the through-holes can make the concrete enter the space, so that the beam-column joints are built into the concrete.

Embodiment 5: This embodiment is basically the same as Embodiment 1, and the difference lies in: this embodiment further describes the structure of the cross plate.

In this embodiment, the fixed position of the cross plate corresponds to the horizontal splicing gap, and its thickness is the same as the horizontal splicing gap; in this embodiment, the thickness of the cross plate and the web plate are the same, thereby strengthening the force strength of the central body and improving the structural stability.

A reinforcing seat 11 is arranged between the side surface of the central body and the upper connecting plate and the lower connecting plate, and the reinforcing seat 11 can further enhance the connection strength between the central body and the upper connecting plate and the lower connecting plate.

The upper connecting plate 2 and the lower connecting plate 3 are both provided with corresponding cut corners, so that the edges of the upper connecting plate and the lower connecting plate are flush with the upper and lower wing plates.

This embodiment provides a modular prefabricated beam-column combination node connected by bolts, which includes an upper column unit, a central member, a beam member unit, a lower column unit, and bolts for connecting each module. The node connection includes: The central member is connected to the column unit and the central member is connected to the beam member unit; the steel bars in the column unit are welded with the reserved angle steel, and the poured concrete does not exceed the position of the I-shaped steel plate on the lower (upper) side of the connection. The I-shaped steel plate with bolt holes can be attached to the upper (lower) surface of the central member with the grooved connection steel plate, and the central member and the column unit are connected by bolts at the position of the grooved connection plate and the I-shaped steel joint.

The reinforcing bars in the beam of the beam member unit pass through the stiffeners and connect with the I-beam joints through bolts, and the poured concrete does not exceed the position of the connecting bolt steel plate. The flanges are of unequal length and reserved for bolt holes, and a groove is reserved at the center of the lower flange; the center member and the beam member element are connected by bolts at the flange and web positions.

In order to make the steel bar in the column and the I-beam joint of the column unit can be welded more firmly, the angle steel should have a certain height. At the same time, shear nails should be set at the relatively central position of the horizontal direction of the I-beam steel plate to improve the connection reliability of the concrete, steel bars and I-beam joints in the column.

In order to make the structure of the central member stable, the force is reasonable, and it is convenient for the concrete to be poured at the later nodes, each side includes four supports at the upper and lower sides. Cross-shaped intersecting steel plates.

In order to make the steel bar in the beam and the I-beam joint of the column unit can be more firmly connected, the I-beam in the beam is set as a hollowed-out stiffener, and the I-beam part in the beam should have a certain length to improve the beam end position. Shear strength.

In this embodiment, whether the central member is connected to the column unit or the central member is connected to the beam member unit, the reserved bolt holes should be aligned one by one for the high-strength bolts to pass through during assembly.

During the specific construction of this embodiment, the components are first fabricated in the factory according to the determination of the bolts in the connecting nodes, the number of connecting nodes of the central member, the dimensions of the joints, I-beams, channel steels, and angle steels.

Splicing the lower grooved connecting steel plate of the central member with the reserved I-beam joint of the lower column unit, when the grooved connecting steel plate and the reserved I-beam joint are completely fitted and the reserved random bolt holes are aligned, the two-way connection is realized by high-strength bolts. a valid connection to the user. The two steel plates with reserved random bolt holes on the side of the central member are spliced with the I-beam web of the beam member unit, and the I-beam web of the beam member unit is placed between the two steel plates on the side of the central member to achieve surface-to-surface adhesion. The two horizontal steel plates with unequal shapes on the top and bottom of the central member are fitted with the upper and lower flanges of the beam member unit, so as to achieve the state of surface-to-surface fit and the bolt holes are aligned; finally, high-strength bolts are used to realize the connection between the two. valid connection. When the central member is spliced with the beam member unit, the central member remains stationary, and the I-beam web of the beam member unit falls vertically into between the two steel plates on the side of the central member. The connection method is that only one side of the central member needs to be connected with the beam member unit, and the other three sides can be operated in this way. Splicing the upper grooved connecting steel plate of the central member with the reserved I-beam joints of the upper column unit, when the grooved connecting steel plate and the reserved I-beam joints are completely fitted and the reserved random bolt holes are aligned, high-strength bolts are used to achieve two a valid connection to the user.

Claims (10)

1. a modular prefabricated beam-column combination node using bolted connection is characterized in that: it comprises an upper column unit, a central component unit, a lower column unit and a beam component unit; the central component unit comprises a central body, an upper connection plate and lower connecting plate; the side of the central body has a flat side wall, the upper and lower parts are provided with an upper connecting plate and a lower connecting plate, the upper connecting plate is smaller than the lower connecting plate, and the upper connecting plate and the lower connecting plate are The outer side of the connecting plate is fixed with a slot-shaped connecting plate at a symmetrical interval, and a vertical splicing gap is formed between the two slot-shaped connecting plates; the lateral side of the central body is provided with a plate-shaped connecting plate at intervals, and a horizontal direction is formed between the two plate-shaped connecting plates. splicing gap; the upper column unit and the lower column unit have the same structure, and both include a fixing plate and a vertical splicing body; the vertical splicing body is an I-shaped structure, which is fixed on the inner side of the fixing plate, and the outer side of the fixing plate is provided with a vertical splicing body. Beam frame; the vertical splicing body is nested in the vertical splicing gap, and corresponding screw holes are provided on the vertical splicing body and the web plate and the wing plate of the grooved connecting plate, and the screw holes are connected one by one after the connection bolts for fixing; the beam member unit includes a beam frame and a transverse splicing body; the transverse splicing body includes an upper wing plate, a lower wing plate, a web plate and a beam frame; the upper part and the lower part of the web plate are respectively connected with the upper wing plate It is fixedly connected with the lower wing plate, wherein the outer end of the connection between the lower wing plate and the web plate is provided with a splicing interface, and the inner side of the transverse splicing body is fixed with a beam frame; the web plate is nested in the transverse splicing gap, and the upper wing plate is located in the plate The upper wing plate and the upper connecting plate are fixedly connected through the corresponding screw holes, the lower wing plate is seated on the lower connecting plate, and the web and the plate-shaped connecting plate and the lower wing plate Corresponding screw holes are arranged on the lower connecting plate, and the screw holes are in one-to-one correspondence and then fixed by connecting bolts. 2 . The modular prefabricated assembled beam-column combination node using bolted connection according to claim 1 , wherein: the inner side of the plate-shaped connecting plate is provided with a let-away slot, and the upper connecting plate is matched and located in the let-away groove. 3 . in the slot. 3. The modular prefabricated assembled beam-column combination node using bolts according to claim 2, wherein the edge of the upper wing protrudes from the web, the lower wing is flush with the web, and the upper wing is flush with the web. The protruding part of the wing plate is provided with screw holes, and the screw holes are distributed on both sides of the web plate and the plate-type connecting plate. 4 . The modular prefabricated assembled beam-column combination node using bolts according to claim 2 , wherein a limit block is provided on the upper connecting plate, and the limit block is matched and clamped in the horizontal splicing gap. 5 . Inside. 5 . The modular prefabricated beam-column combination node connected by bolts according to claim 1 , wherein the central body is a cube structure, and the inner side of the central body is provided with a cross-shaped cross plate. The body, the cross plate, the upper connecting plate and the lower connecting plate are provided with through holes which can communicate with each other. 6 . The modular prefabricated assembled beam-column combination node using bolts according to claim 1 , wherein the fixed position of the cross plate corresponds to the transverse splicing gap, and its thickness is the same as the transverse splicing gap. 7 . . 7 . The modular prefabricated assembled beam-column combination node according to claim 1 , wherein a reinforcing seat is provided between the side surface of the central body and the upper connecting plate and the lower connecting plate. 8 . 8. The modular prefabricated beam-column combination node using bolted connection according to claim 1, wherein the upper connecting plate and the lower connecting plate are provided with corresponding cut corners, so that the upper connecting plate and the lower connecting plate are provided with corresponding corners. The edge of the connecting plate is flush with the upper wing plate and the lower wing plate. 9 . The modular prefabricated beam-column combination node connected by bolts according to claim 1 , characterized in that: corner seats are provided on the outer sides of the upper connecting plate and the lower connecting plate, and the vertical beam frame is fixed on the outer side of the upper connecting plate and the lower connecting plate. on the corner seat. 10. The modular prefabricated beam-column combination node connected by bolts according to claim 1, characterized in that: the two sides of the web are fixed with multi-layer rib plates, and the beam frame is fixed on the rib plates .

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