CN114482276B - Modularized unit frame column-column connection node and house building system thereof - Google Patents

Abstract

The invention relates to a modularized unit frame column-column connecting node and a house building system thereof, comprising two frame side columns, a connecting steel plate frame for horizontally connecting the frame side columns and an embedded part for longitudinally connecting the frame side columns; the connecting steel plate frame comprises a long steel plate strip, short steel plate strips welded at the two end parts of the long steel plate strip, and a plurality of steel plate strips longitudinally welded on the long steel plate strip and the short steel plate strips, wherein the steel plate strips are provided with through holes which correspond to each other and are convenient for penetrating steel bars; the end face of the frame side column is provided with a notch which is shaped like a Chinese character 'ao', and one side opposite to the frame side column is provided with a through groove which is convenient for a steel plate sheet to pass through; a plurality of grouting holes are formed in the frame side columns; the method solves the problems that the existing assembly type building column connection adopts the modes of mechanical sleeve connection, bolt connection, welding and the like, the connection construction is complex, the manual operation amount is large, the difficulty is large, and the construction efficiency is low.

Description

A modular unit frame column-column connection node and its building construction system

technical field

The invention belongs to the technical field of modular assembled buildings, and relates to a modular unit frame column-column connection node and a building construction system thereof.

Background technique

Prefabricated buildings are one of the focuses of the development of the modern construction industry. As most of the building components of prefabricated buildings can be prefabricated and maintained in factories, such as prefabricated floors, beams, columns and walls, etc., during construction, the components only need to be transported to On-site assembly not only has the characteristics of fast construction speed, high construction efficiency, short construction period, and high degree of industrialization, but also has energy saving and environmental protection, reducing the impact of on-site operations on the surrounding environment. The prefabricated building divides the building components into blocks. When local damage occurs, only the same components need to be disassembled and replaced for maintenance, improving the durability and service life of the building. The prefabricated building is a new construction method in line with the industrialization of modern buildings, while the prefabricated modular frame building is to prefabricate the entire box frame in the factory, with components such as floors, columns, beams and walls, including decoration, water, electricity and heating. Communication and other integration, and then the entire modular box frame structure is transported to the construction site, and then lapped and assembled according to the specified position. The prefabricated modular frame building is different from the traditional component-assembled building in that: the early prefabricated type only forms the overall structure through on-site assembly of components, while the modular box frame is through on-site assembly of the module box, its prefabrication rate, assembly rate and Build more efficiently.

Traditional buildings have a large amount of wet work on site, require formwork, high cost, the construction process is easily affected by the environment, and low construction efficiency. However, component-based prefabricated buildings have a large number of connection nodes between components and are easy to There are construction quality problems, resulting in partial or poor overall problems. For example, mechanical sleeve connection, bolt connection and welding are mostly used for the connection between columns, but the mechanical sleeve connection is not suitable for steel bars with small diameters. less efficient. Especially in high-rise super high-rise buildings, stability and safety problems are prone to occur when the structure is subjected to horizontal forces such as earthquakes or wind loads. The use of prefabricated modular frame structure will greatly reduce the number of nodes, and the integrity between components is well guaranteed, but the connection between modules in the horizontal and vertical directions is the key to this structural system. Therefore, in view of the existing technical problems, it is urgent to propose a modular unit frame column-column connection node and its building system that are safe, reliable, simple in manufacturing process, and mechanical properties meet the design requirements.

Contents of the invention

In view of this, in order to solve the problems that the current prefabricated building column connection adopts mechanical sleeve connection, bolt connection and welding, etc., the connection construction is complicated, the manual operation is large and difficult, and the construction efficiency is low. Column-column connection joints of the unit frame and its building system.

To achieve the above object, the present invention provides the following technical solutions:

A modular unit frame column-to-column joint, comprising two frame side columns, a connecting steel frame for connecting the frame side columns horizontally and embedded parts for longitudinally connecting the frame side columns; the connecting steel frame includes long steel strips 1. The short steel strips welded to the two ends of the long steel strips and several steel sheets longitudinally welded on the long steel strips and the short steel strips. There are corresponding through holes on the steel sheets that are convenient for passing steel bars; the side columns of the frame There is a notch on the end face and is in a concave shape, and the opposite side of the frame side column is provided with a through groove for the steel sheet to pass through; a number of grouting holes are opened on the frame side column.

The beneficial effect of this basic scheme is that the connecting steel frame is used to horizontally connect two frame side columns, the long steel strips welded with steel sheets penetrate through one frame side column, and the corresponding steel sheets pass through the through grooves of the frame side columns After passing out, it penetrates into the through groove of the other frame side column, and the horizontal connection of the two frame side columns is realized by passing through the corresponding steel sheet through the steel bar. The embedded parts are used to longitudinally connect two frame side columns, and the grouting holes on the frame side columns are convenient for pouring concrete in the frame side columns, and the concrete can be poured evenly with each other.

Further, there are wing plates on both sides of the notch end of the side column of the frame, and the through groove is opened on the wing plate and is a waist-shaped hole that is compatible with the steel sheet, and a trim plate is connected between the wing plates of the same frame side column; the wing plate and the frame A baffle as an embedded part is connected between the inner walls of the side columns, one end of the baffle protrudes from the frame side column, the other end is recessed into the frame side column, and grouting holes are evenly opened on the baffle. Beneficial effects: the matching of the waist-shaped hole and the steel plate can improve the connection stability between the steel plate frame and the frame side column, the trim plate plays the role of connecting the frame side column flange, and the grouting hole facilitates the concrete For circulation, the baffle plays the role of longitudinally connecting the two frame side columns.

Further, the side of the frame side column gap is a support plate, and the through groove is opened on the support plate and is a rectangular frame that is convenient for several groups of steel plates to pass through at the same time; One end of the supporting plate and the baffle of the component protrudes from the side column of the frame, and the other end is recessed in the side column of the frame, and the grouting holes are evenly opened on the supporting plate and the baffle. Beneficial effects: Several groups of steel sheets pass through the rectangular frame to connect with a corresponding set of frame side columns, improving the connection stability between the connected steel frame and frame side columns, the grouting holes facilitate the flow of concrete in the frame side columns, and the support plates And the baffle plays the role of longitudinally connecting the two frame side columns.

Further, the embedded parts include connecting steel plates, clamping blocks welded at the ends of the connecting steel plates, and shearing parts pierced in the middle of the connecting steel plates. Beneficial effects: the clamping blocks welded on the embedded parts are correspondingly clamped in the two corresponding upper and lower frame side columns to realize the longitudinal connection of the two frame side columns, and the shearing parts can enhance the shear resistance of the upper and lower frame side columns role.

Further, partitions with through holes are welded in the side columns of the frame corresponding to the short steel strips. Beneficial effect: the partition plays the role of supporting the connected steel frame.

Further, the shear parts are channel steel, square steel pipe or section steel uniformly welded with studs. Beneficial effects: the pegs play the role of enhancing the shearing force of channel steel, square steel pipe or section steel.

A housing construction system based on modular unit frame column-column connection nodes, including a core tube and a modular unit frame fixedly connected around the core tube, the modular unit frame includes the above-mentioned frame side columns, prefabricated floor slabs and The long beams and short beams between the columns realize the horizontal connection of the frame side columns by connecting the steel frame, and realize the longitudinal connection of the frame side columns through the embedded parts, and the joints of adjacent prefabricated floors are cast-in-place belts.

Further, pre-embedded steel plates are pre-embedded around the core tube, short I-beams are welded on the pre-embedded steel plates, long I-beams are welded on the frame side columns on the side where the modular unit frame is connected to the pre-embedded steel plates, and the long I-beams are welded to the corresponding The short I-beams are fixedly connected by bolt fasteners. Beneficial effect: the design of the pre-embedded steel plate and the short I-beam facilitates assembly by construction personnel.

Further, square steel pipes or I-beams welded and fixed to the long beams or short beams are arranged under the cast-in-place belt. Beneficial effects: the square steel pipe or the I-beam is used to support the cast-in-place belt and improve its pouring stability.

The beneficial effects of the present invention are:

1. In the modular unit frame column-column connection node disclosed in the present invention, the two hollow frame side columns are connected horizontally through the connecting steel frame, and the long steel strips welded with steel sheets are penetrated from one frame side column. The corresponding steel sheet passes through the through groove of the frame side column and then penetrates into the waist-shaped hole or rectangular frame of the other frame side column, and the horizontal connection of the two frame side columns is realized by passing through the corresponding steel sheet through the steel bar. The embedded parts are used to longitudinally connect two frame side columns, and the way that one end of the baffle protrudes from the frame side column and the other end is recessed in the frame side column can make the longitudinal connection of the frame side columns more convenient and quick, which facilitates the rapid assembly of the frame side columns and simplifies Assembly process, improve construction efficiency.

2. In the modular unit frame column-column connection node disclosed in the present invention, the clamping blocks welded on the embedded parts are correspondingly clamped in the two corresponding frame side columns up and down to realize the longitudinal connection of the two frame side columns. The shear parts of steel, square steel pipe or section steel can enhance the shear force of the upper and lower frame side columns. Concrete is poured after the horizontal and vertical frame side columns are connected and fixed. The frame side columns after concrete pouring and forming realize the perfect bond between steel and concrete, which facilitates the assembly of frame side columns and improves the strength and rigidity of the joints. Industrialized production efficiency in construction.

3. The building construction system based on the modular unit frame column-column connection nodes disclosed in the present invention can realize the rapid assembly of the modular unit frame house and the core tube through the cooperation of the embedded steel plate and the short I-beam, and can be assembled on site. Rapid hoisting and convenient construction greatly reduce construction difficulty and labor costs, improve construction efficiency, and ensure good mechanical properties of structural components.

Other advantages, objects and features of the present invention will be set forth in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the investigation and research below, or can be obtained from It is taught in the practice of the present invention. The objects and other advantages of the invention may be realized and attained by the following specification.

Description of drawings

In order to make the purpose of the present invention, technical solutions and advantages clearer, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic diagram of the column-to-column horizontal connection structure of a modular unit frame in Embodiment 1 of the present invention;

Figure 2 is an exploded view of the column-to-column horizontal connection of the modularized unit frame in Embodiment 1 of the present invention;

Fig. 3 is a schematic diagram of the column-to-column horizontal connection structure of the modularized unit frame in Embodiment 2 of the present invention;

Figure 4 is an exploded view of the column-to-column horizontal connection of the modularized unit frame in Embodiment 2 of the present invention;

Fig. 5 is a schematic structural diagram of a building system of a modular unit frame column-column connection component in Embodiment 1 of the present invention;

Fig. 6 is a schematic diagram of the building system structure of modularized unit frame column-column connection components in Embodiment 2 of the present invention;

Fig. 7 is a schematic diagram of the side column structure of the modularized unit frame in Embodiment 3 of the present invention;

Fig. 8 is a structural schematic diagram of channel steel embedded parts for the column-to-column longitudinal connection of the modularized unit frame in Embodiment 3 of the present invention;

Fig. 9 is a structural schematic diagram II of channel steel embedded parts for the column-to-column longitudinal connection of the modularized unit frame in Embodiment 3 of the present invention;

Fig. 10 is a structural schematic diagram of a square steel pipe embedded part for the longitudinal connection of the modularized unit frame column-to-column in Embodiment 4 of the present invention;

Fig. 11 is a structural schematic diagram II of square steel pipe embedded parts for the longitudinal connection of the modular unit frame column-to-column in Embodiment 4 of the present invention;

Fig. 12 is a structural schematic diagram of a section steel embedded part for the longitudinal connection of the modularized unit frame column-column in Embodiment 5 of the present invention;

Fig. 13 is a structural schematic diagram II of the embedded part of section steel for the longitudinal connection of the modularized unit frame column-to-column in Embodiment 5 of the present invention;

Fig. 14 is a schematic diagram of the building system structure of the modular unit frame column-column connection member building system according to Embodiment 1 of the present invention;

Fig. 15 is an enlarged view of place A in Fig. 14 of the present invention;

Fig. 16 is a schematic diagram of the building system structure of modularized unit frame column-column connecting components in Embodiment 1 of the present invention;

Fig. 17 is an enlarged view of place B in Fig. 16 of the present invention;

Fig. 18 is a schematic structural diagram of a building system of a modular unit frame column-column connection member in Embodiment 1 of the present invention;

Fig. 19 is an enlarged view at C in Fig. 18 of the present invention.

Reference signs: frame side column 1, waist hole 11, grouting hole 12, trim plate 13, rectangular frame 14, support plate 15, connecting steel frame 2, long steel strip 21, short steel strip 22, partition 23, Through hole 24, steel bar 25, steel sheet 26, embedded parts 3, channel steel 31, square steel pipe 32, section steel 33, clamping block 34, connecting steel plate 35, prefabricated floor slab 41, cast-in-place belt 42, short I-beam 43, Long I-beam 44, core tube 5.

Detailed ways

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should not be construed as limiting the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, Enlargement or reduction does not represent the size of the actual product; for those skilled in the art, it is understandable that certain known structures and their descriptions in the drawings may be omitted.

In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices or elements must It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the drawings are for illustrative purposes only, and should not be construed as limiting the present invention. For those of ordinary skill in the art, the understanding of the specific meaning of the above terms.

In modern modular prefabricated buildings, the building is modularized, each module is prefabricated in the factory, and then hoisted on site, and the connection between modules is often the key to ensuring the safety of the overall structure, and the connection between columns It is the key to prefabricated buildings. Therefore, how to quickly and firmly connect modules to modules is a technical problem to be solved urgently by those skilled in the art. However, there is no good solution at present. Most of the connections between columns are realized through a large number of on-site welding. There are various defects in welding, and the construction site requires a lot of manpower, the construction labor cost is high, and the efficiency is low, which greatly reduces the enthusiasm for the development of the modular building industry and is not conducive to the promotion and application of modular buildings. In the present invention, however, the emphasis is on proposing a new connection scheme for the horizontal connection and the vertical connection between columns, which can be quickly hoisted on site, conveniently carried out construction, greatly reducing construction difficulty and labor costs, and improving construction efficiency , but also to ensure good mechanical properties of structural members.

Example 1

The modular unit frame column-column connection node shown in Figure 1 and 2 includes two frame side columns 1, a connecting steel frame 2 for horizontally connecting frame side columns 1 and a pre-assembled frame for longitudinally connecting frame side columns 1 The embedded part 3; the connecting steel plate frame 2 is used to connect two frame side columns 1 horizontally, and the embedded part 3 is used to vertically connect the two frame side columns 1.

The connecting steel frame 2 includes long steel strips 21, short steel strips 22 welded to the two ends of the long steel strips 21, and several steel sheets 26 uniformly longitudinally welded on the long steel strips 21 and short steel strips 22, and the steel sheets 26 Corresponding through-holes are provided on the top and are convenient for passing steel bars 25; the end surface of the frame side column 1 is provided with a gap and is in a concave shape, and the two sides of the notch end of the frame side column 1 are wing plates, and the waist-shaped holes opened on the wing plate 11 is matched with the steel sheet 26, and the trim plate 13 is connected between the same frame side column 1 wing plate; a baffle plate is connected between the wing plate and the frame side column 1 inner wall, and the grouting holes 12 are evenly opened on the baffle plate. The matching of the waist hole 11 and the steel plate 26 can improve the connection stability between the steel plate frame 2 and the frame side column 1, the trim plate 13 plays the role of connecting the frame side column 1 wing plate, and the grouting hole 12 plays a role in facilitating the frame The role of concrete circulation in side column 1. One end of the baffle protrudes from the side column 1 of the frame, and the other end of the baffle is recessed into the side column 1 of the frame. The baffle plays the role of longitudinally connecting the two frame side columns 1 .

As shown in Figure 5, the building system based on the modular unit frame column-column connection node includes a core tube 5 and a modular unit frame fixedly connected around the core tube 5, and the modular unit frame includes the above-mentioned frame side column 1, The prefabricated floor slab 41 and the long beams and short beams connected between the frame side columns 1 realize the horizontal connection of the frame side columns 1 by connecting the steel frame 2, and realize the longitudinal connection of the frame side columns 1 through the embedded parts 3. Adjacent prefabricated The joint of the floor slabs 41 is a cast-in-place belt 42 . There are pre-embedded steel plates around the core tube 5, short I-beams 43 are welded on the pre-embedded steel plates, and long I-beams 44 and long I-beams 44 are welded on the frame side column 1 on the side where the modular unit frame is connected to the pre-embedded steel plates. It is fixedly connected with the corresponding short I-beam 43 by bolt fasteners. The design of the pre-embedded steel plate and the short I-beam 43 facilitates assembly by construction personnel. Below the cast-in-place belt 42, square steel pipes 32 or I-beams welded and fixed to the long or short beams are arranged. The square steel pipe 32 or the I-beam are used to support the cast-in-place belt 42 to improve its pouring stability.

When the modular unit frame column-column is combined horizontally, the long steel strip 21 welded with the steel sheet 26 is penetrated from a frame side column 1, and the corresponding steel sheet 26 is inserted into the waist-shaped hole 11 of the frame side column 1. After passing through the waist-shaped hole 11 of another frame side column 1, the short steel strip 22 welded with the steel sheet 26 is welded on the end of the long steel strip 21, and then the dividing plate 23 with the through hole 24 is welded on the The frame side column 1 where the short steel plate is located supports and fixes the steel strip formed by the long steel strip 21 and the short steel strip 22, and then the steel bar 25 penetrates the through hole 24 on the partition plate 23 and the through hole on the corresponding steel sheet 26 to realize Horizontal connection of two frame side columns 1. Finally, concrete is poured in the frame side column 1 to realize the horizontal assembly of modular unit frame column-column.

When the modular unit frame column-column horizontal combination requires vertical combination, one end of the baffle as the embedded part 3 extends out of the frame side column 1, and the other end is recessed in the frame side column 1, which can be directly used for the modular unit frame column-column vertical combination assembly.

When assembling the housing construction system based on the modular unit frame column-column connection nodes, after the modular unit frame column-column combination, the long beams and short beams are lapped according to the requirements, and the prefabricated floor slab 41 is lapped on the corresponding long beams and short beams , the joints of adjacent prefabricated floor slabs 41 are cast in-situ. After the modular unit frame house is prepared, the long I-beam 44 welded on the side column and the short I-beam 43 on the corresponding core tube 5 are fixedly connected by bolt fasteners, and the column-column connection node based on the modular unit frame is completed. Assembly of building systems.

Example 2

As shown in Figures 3 and 4, the difference between embodiment 2 and embodiment 1 is that the connecting steel frame 2 includes long steel strips 21, welded on the two ends of the long steel strips 21. Short steel strips 22 and 12 steel strips 26 uniformly and longitudinally welded on the long steel strips 21 and short steel strips 22, the steel strips 26 are provided with corresponding through holes that are convenient for piercing steel bars 25; The side is the support plate 15, and the rectangular frame 14 on the support plate 15 is convenient for 4 groups of steel sheets 26 to pass through at the same time; a baffle is connected between the support plate 15 and the inner wall of the frame side column 1, and the grouting holes 12 are evenly opened on the support plate. 15 and on the bezel. One end of the support plate 15 and the baffle protrudes from the frame side column 1 , and the other end is recessed into the frame side column 1 , and the support plate 15 and the baffle plate play a role of longitudinally connecting two frame side columns 1 . Four steel plates 26 pass through the rectangular frame 14 to connect with a corresponding set of frame side columns 1, improving the connection stability between the steel plate frame 2 and frame side columns 1, and the grouting holes 12 facilitate the circulation of concrete in the frame side columns 1 effect.

As shown in Figure 6, based on the building construction system of the modular unit frame column-column connection node, when the modular unit frame column-column is horizontally combined and needs to be combined vertically, the support plate 15 and the baffle plate as the embedded part 3 extend The frame side column 1 is out, and the frame side column 1 is recessed at the other end, which can be directly used for the longitudinal assembly of the modular unit frame column-column.

Example 3

As shown in Figures 7, 8, and 9, the modular unit frame column-column connection node includes two frame side columns connected to the steel frame 2, including long steel strips 21, and short steel strips welded to the ends of the long steel strips 21. 22 and several steel sheets 26 uniformly and longitudinally welded on the long steel strips 21 and short steel strips 22, the steel sheets 26 are provided with corresponding through holes that are convenient for piercing the steel bars 25; the end faces of the frame side columns 1 are provided with gaps And it is like a concave shape, the two sides of the notch end of the frame side column 1 are wing plates, the waist-shaped holes 11 set on the wing plate are matched with the steel plate 26, and the same frame side column 1 is connected with a trim plate 13 between the wing plates; A baffle is connected between the wing plate and the inner wall of the frame side column 1, and the grouting holes 12 are evenly opened on the baffle. The matching of the waist hole 11 and the steel plate 26 can improve the connection stability between the steel plate frame 2 and the frame side column 1, the trim plate 13 plays the role of connecting the frame side column 1 wing plate, and the grouting hole 12 plays a role in facilitating the frame The role of concrete circulation in side column 1. Both ends of the baffle do not protrude from the frame side column 1.

The embedded part 3 includes a connecting steel plate 35, a clamping block 34 welded at the end of the connecting steel plate 35, and a shearing part pierced in the middle of the connecting steel plate 35. The shearing part is a channel steel 31 uniformly welded with studs.

When vertical combination is required after horizontal combination of modular unit frame column-column, select the connecting steel plate 35 of appropriate specifications according to the needs. The upper and lower sides of the end are all welded with a clamping block 34 with a through hole 24, and the middle part of the connecting plate 35 is welded with a channel steel 31 with studs. When only two frame side columns 1 are required to be extended longitudinally, select a square connecting steel plate 35, the upper and lower sides of the four ends of the connecting steel plate 35 are welded with a clamping block 34 with a through hole 24, and the middle part of the connecting steel plate 35 is welded with a bolt The two groups of channel steel 31 nailed, the upper and lower free ends of the channel steel 31 go deep into the side columns 1 of different frames respectively to resist shearing. The housing construction system based on the modular unit frame column-column connection nodes is shown in Figures 14 and 15.

Example 4

As shown in Figures 10 and 11, the difference between embodiment 2 and embodiment 1 of the embedded parts for column-to-column longitudinal connection of modular unit frames is that the shear parts are square steel pipes 32 evenly welded with studs. The housing construction system based on the modular unit frame column-column connection nodes is shown in Figures 16 and 17.

Example 5

As shown in Figures 12 and 13, the embedded parts for the column-to-column longitudinal connection of the modular unit frame, the difference between Embodiment 3 and Embodiment 1 is that the shear parts are shaped steel 33 uniformly welded with studs. The housing construction system based on the modular unit frame column-column connection nodes is shown in Figures 18 and 19.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should be included in the scope of the claims of the present invention.

Claims (9)

1. The modularized unit frame column-column connecting node is characterized by comprising two frame side columns, a connecting steel plate frame for horizontally connecting the frame side columns and an embedded part for longitudinally connecting the frame side columns; the connecting steel plate frame comprises a long steel plate strip, short steel plate strips welded at the two end parts of the long steel plate strip, and a plurality of steel plate strips longitudinally welded on the long steel plate strip and the short steel plate strips, wherein the steel plate strips are provided with through holes which correspond to each other and are convenient for penetrating steel bars; the end face of the frame side column is provided with a notch which is shaped like a Chinese character 'ao', and one side opposite to the frame side column is provided with a through groove which is convenient for a steel plate sheet to pass through; a plurality of grouting holes are formed in the frame side columns.

2. The modular unit frame column-column connection node of claim 1, wherein wing plates are arranged on two sides of the notch end of the frame side column, through grooves are formed in the wing plates and are waist-shaped holes matched with the steel plates, and lacing plates are connected between the wing plates of the same frame side column; a baffle serving as an embedded part is connected between the wing plate and the inner wall of the frame side column, one end of the baffle extends out of the frame side column, the other end of the baffle is sunken into the frame side column, and grouting holes are uniformly formed in the baffle.

3. The modular unit frame column-column connection node of claim 1, wherein the frame side column notch side is a support plate, the through slot is formed on the support plate and is a rectangular frame which is convenient for a plurality of groups of steel plates to simultaneously pass out; a baffle is connected between the support plate and the inner wall of the frame side column, one end of the support plate and one end of the baffle serving as embedded parts extend out of the frame side column, the other end of the support plate and one end of the baffle are sunken into the frame side column, and grouting holes are uniformly formed in the support plate and the baffle.

4. The modular unit frame column-column connection node of claim 1, wherein the embedment comprises a connection steel plate, a clamping block welded at an end of the connection steel plate, and a shear member penetrating through a middle of the connection steel plate.

5. A modular unit frame column-column connection node as claimed in claim 2, wherein a spacer plate with a through hole is welded in the frame side column corresponding to the short steel strip.

6. The modular unit frame column-column connection node of claim 4, wherein the shear elements are uniformly bolted channel steel, square steel tube or section steel.

7. The house building system based on the modularized unit frame column-column connection node is characterized by comprising a core tube and modularized unit frames fixedly connected around the core tube, wherein each modularized unit frame comprises a frame side column, prefabricated floor slabs and long beams and short beams connected between the frame side columns according to any one of claims 1-6, the horizontal connection of the frame side columns is realized through connecting steel plate frames, the longitudinal connection of the frame side columns is realized through embedded parts, and the connection positions of adjacent prefabricated floor slabs are cast-in-place belts.

8. The building construction system based on the modular unit frame column-column connection node according to claim 7, wherein the embedded steel plates are embedded around the core tube, short-length steel plates are welded on the embedded steel plates, long-length steel plates are welded on the frame side columns on the side where the modular unit frame is connected with the embedded steel plates, and the long-length steel plates are fixedly connected with the corresponding short-length steel plates through bolt fasteners.

9. The modular unit frame column-column connection node based building construction system of claim 8, wherein square steel pipes or i-beams welded and fixed with the long beams or the short beams are arranged below the cast-in-place belt.