CN114482276A - Modular unit frame column-column connecting node and house building system thereof - Google Patents

Abstract

The invention relates to a modular 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 ends of the long steel plate strip and a plurality of steel plate pieces longitudinally welded on the long steel plate strip and the short steel plate strips, and through holes which correspond to each other and are convenient for steel bars to penetrate through are formed in the steel plate pieces; the end surface of the frame side column is provided with a notch in a concave shape, and one side of the frame side column opposite to the frame side column is provided with a through groove for the steel plate to pass through; a plurality of grouting holes are formed in the frame side columns; the problem of present assembled building post connection adopt modes such as mechanical telescopic connection, bolted connection and welding, connection construction complicacy, the big degree of difficulty of manual operation volume is big, the efficiency of construction is lower is solved.

Description

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

technical field

The invention belongs to the technical field of modular prefabricated 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. Since most of the building components of prefabricated buildings can be prefabricated and maintained in factories, such as prefabricated floors, beams, columns and walls, they only need to be transported to On-site assembly not only has the characteristics of fast construction speed, high construction efficiency, short construction period, high degree of industrialization, but also 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 can be disassembled and replaced for maintenance, which improves the durability and service life of the building. The prefabricated building is a new construction method that conforms to 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. The whole modular box frame structure is transported to the construction site, and the lap joint and assembly are carried out according to the designated position. The prefabricated modular frame building is different from the traditional component prefabricated building: the early prefabricated type only formed the overall structure by on-site assembly of components, while the modular box frame was assembled by the on-site modular box, and its prefabrication rate, assembly rate and Build more efficiently.

Traditional buildings have problems such as large amount of wet work on site, need for formwork, high cost, easy environmental impact during construction, and low construction efficiency. There are construction quality problems, resulting in problems such as poor local or overall integrity. For example, the connection between columns and columns now mostly adopts mechanical sleeve connection, bolt connection and welding, but mechanical sleeve connection is not suitable for steel bars with small diameters, the bolt connection construction is complicated, the amount of manual operation is difficult and the construction less efficient. Especially in high-rise and super high-rise buildings, the structure is prone to stability and safety problems when subjected to horizontal forces such as earthquake 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 horizontal and vertical connection between modules and modules 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 a building system thereof that are safe, reliable, simple in manufacturing process, and whose mechanical properties meet the design requirements.

SUMMARY OF THE INVENTION

In view of this, the present invention provides a module to solve the problems that the current prefabricated building column-to-column connection adopts mechanical sleeve connection, bolt connection, welding, etc., the connection construction is complicated, the manual operation is large and difficult, and the construction efficiency is low. Element frame column-column connection node and its building system.

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

A modular unit frame column-column connection node, 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 includes long steel strips , Short steel strips welded on both ends of the long steel strips and several steel plates longitudinally welded on the long steel strips and short steel strips. The end face is provided with a notch and is in the shape of a concave shape, and the opposite side of the frame side column is provided with a through groove which is convenient for the steel sheet to pass through; the frame side column is provided with a number of grouting holes.

The beneficial effect of the basic scheme is that the connecting steel frame is used to connect two frame side columns horizontally, the long steel strip welded with the steel sheet penetrates through one frame side column, and the corresponding steel sheet passes through the through groove of the frame side column. After passing through, 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 penetrating the corresponding steel plate 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 is poured evenly with each other.

Further, the two sides of the notched end of the frame side column are wing plates, the through grooves are opened on the wing plates and are waist-shaped holes that are adapted to 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 are connected. The inner walls of the side pillars are connected with baffles as embedded parts, one end of the baffles protrudes from the frame side pillars, the other end is recessed into the frame side pillars, and the grouting holes are evenly opened on the baffles. Beneficial effects: the adaptation of the waist-shaped hole and the steel sheet can improve the connection stability of the connecting steel frame and the frame side column, the affixing plate plays the role of connecting the frame side column wing plate, and the grouting hole is convenient for the concrete inside the frame side column. The function of circulation, the baffle plays the role of longitudinally connecting the two frame side columns.

Further, one side of the frame side column gap is a support plate, and a through slot is opened on the support plate and is a rectangular frame that facilitates several groups of steel sheets to pass through at the same time; a baffle is connected between the support plate and the inner wall of the frame side column, as a pre-embedded frame. One end of the support plate and the baffle plate of the part protrudes from the frame side column, and the other end is recessed into the frame side column, and the grouting holes are evenly opened on the support plate and the baffle plate. Beneficial effects: Several groups of steel plates pass through the rectangular frame and are connected to a corresponding group of frame side columns, which improves the connection stability between the connecting steel plate frame and the frame side columns. The grouting holes play a role in facilitating the circulation of concrete in the frame side columns. And the baffle plays the role of longitudinally connecting the two frame side columns.

Further, the embedded part includes a connecting steel plate, a clamping block welded on the end of the connecting steel plate, and a shear-resisting piece passing through the middle of the connecting steel plate. Beneficial effects: the clamping blocks welded on the embedded parts are correspondingly clamped in the two frame side columns corresponding to the upper and lower sides to realize the longitudinal connection of the two frame side columns, and the shear-resistant parts can enhance the shear resistance of the upper and lower frame side columns. effect.

Further, a partition plate with a through hole is welded in the frame side column corresponding to the short steel strip. Beneficial effect: the partition plays the role of supporting and connecting the steel plate frame.

Further, the shearing member is channel steel, square steel pipe or section steel uniformly welded with studs. Beneficial effects: The studs play the role of enhancing the shear resistance of channel steel, square steel pipe or section steel.

A house building system based on modular unit frame column-column connection nodes, comprising a core tube and a modular unit frame fixedly connected around the core tube, the modular unit frame comprising the above-mentioned frame side columns, prefabricated floor slabs and connected to the frame sides The long beams and short beams between the columns are connected horizontally by connecting the steel plate frame to realize the horizontal connection of the frame side columns, and the longitudinal connection of the frame side columns is realized by the embedded parts.

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

Further, a square steel pipe or I-beam welded and fixed with the long beam or the short beam is arranged below the cast-in-place belt. Beneficial effects: Square steel pipes or I-beams are 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 in the horizontal direction through the connecting steel plate frame, and the long steel strip welded with the steel plate sheet penetrates through a frame side column, Corresponding steel plates pass through the through grooves of the frame side columns and then pass into the waist-shaped holes or rectangular frames of the other frame side columns, and the horizontal connection of the two frame side columns is realized by the steel bars passing through the corresponding steel plates. The embedded parts are used to longitudinally connect two frame side posts. The way that one end of the baffle protrudes from the frame side post and the other end is recessed into the frame side post can make the longitudinal connection of the frame side post more convenient and quicker, facilitate the rapid assembly of the frame side post, and simplify the frame side post. Assembly process, improve construction efficiency.

2. In the modular unit frame column-column connection node disclosed in the present invention, the clamping block welded on the embedded part is correspondingly clamped in the upper and lower corresponding frame side columns to realize the longitudinal connection of the two frame side columns, and the groove Shear-resisting parts of steel, square steel pipe or section steel play a role in enhancing the shear resistance of the upper and lower frame side columns. The horizontal and vertical frame side columns are connected and fixed, and then concrete is poured. After the concrete is poured and formed, the frame side columns realize the perfect bond between the steel and the concrete, which facilitates the assembly of the frame side columns and improves the strength and rigidity of the joints. Industrial production efficiency of construction.

3. The house building system based on the modular unit frame column-column connection node disclosed in the present invention can realize the rapid assembly of the modular unit frame house and the core tube through the cooperation of pre-embedded steel plates and short I-beams. Quickly hoisting, convenient construction, greatly reducing construction difficulty and labor costs, improving construction efficiency, and ensuring good mechanical properties of structural components.

Other advantages, objects, and features of the present invention will be set forth in the description that follows, and will be apparent to those skilled in the art based on a study of the following, to the extent that is taught in the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.

Description of drawings

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

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

2 is an exploded view of a modular unit frame column-column horizontal connection in Embodiment 1 of the present invention;

3 is a schematic diagram of a modular unit frame column-column horizontal connection structure according to Embodiment 2 of the present invention;

4 is an exploded view of a modular unit frame column-column horizontal connection according to Embodiment 2 of the present invention;

5 is a schematic diagram of a modular unit frame column-column connection component house building architecture according to Embodiment 1 of the present invention;

FIG. 6 is a schematic diagram of a modular unit frame column-column connection component house building architecture according to Embodiment 2 of the present invention;

7 is a schematic structural diagram of a side column of a modular unit frame according to Embodiment 3 of the present invention;

8 is a structural schematic diagram 1 of a channel steel embedded part for longitudinal connection of a modular unit frame column-column according to Embodiment 3 of the present invention;

9 is a second structural schematic diagram of a channel steel embedded part for longitudinal connection of a modular unit frame column-column according to Embodiment 3 of the present invention;

10 is a structural schematic diagram 1 of a square steel pipe embedded part for longitudinal connection of a modular unit frame column-column according to Embodiment 4 of the present invention;

11 is a second structural schematic diagram of a square steel pipe embedded part for longitudinal connection of a modular unit frame column-column according to Embodiment 4 of the present invention;

12 is a structural schematic diagram 1 of a section steel embedded part for longitudinal connection of a modular unit frame column-column according to Embodiment 5 of the present invention;

13 is a second structural schematic diagram of a section steel embedded part for longitudinal connection of a modular unit frame column-column according to Embodiment 5 of the present invention;

14 is a schematic structural diagram of a modular unit frame column-column connecting member building architecture according to Embodiment 1 of the present invention;

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

16 is a schematic structural diagram of a modular unit frame column-column connecting member building architecture according to Embodiment 1 of the present invention;

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

FIG. 18 is a schematic diagram of the modular unit frame column-column connection component house building architecture according to Embodiment 1 of the present invention;

Fig. 19 is an enlarged view of 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 plate 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 plate 41, cast-in-place belt 42, short I-beam 43, Long I-beam 44, core tube 5.

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations of the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation of the present invention. situation to understand 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 the modules is often the key to ensuring the safety of the overall structure, and the connection between columns It is the key in 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 currently no good solution. Most of the column-to-column connections are realized through a large number of on-site welding. However, on-site 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 popularization and application of modular buildings. In the present invention, the key point is to propose a new connection scheme for the horizontal and vertical connection between the columns, which can be quickly hoisted on site, facilitate the construction, greatly reduce the construction difficulty and labor cost, and improve the construction efficiency. , but also to ensure good mechanical properties of structural members.

Example 1

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

The connecting steel frame 2 includes long steel strips 21, short steel strips 22 welded on both ends of the long steel strips 21, and several steel plates 26 uniformly longitudinally welded on the long steel strips 21 and the short steel strips 22. The steel plates 26 There is a corresponding through hole on the upper side and is convenient for piercing the steel bar 25; the end face of the frame side column 1 is provided with a gap and is in a concave shape, the two sides of the gap end of the frame side column 1 are wing plates, and the waist-shaped holes opened on the wing plate 11 is adapted to the steel sheet 26, and a trim plate 13 is connected between the wings of the same frame side column 1; 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 adaptation of the waist-shaped hole 11 and the steel sheet 26 can improve the connection stability of the connection between the steel plate frame 2 and the frame side column 1. The trim plate 13 plays the role of connecting the wing plate of the frame side column 1, and the grouting hole 12 is used to facilitate the frame. The role of concrete circulation in side column 1. One end of the baffle protrudes from the frame side post 1 , and the other end is recessed into the frame side post 1 . The baffle plays the role of connecting the two frame side posts 1 longitudinally.

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 columns 1, The prefabricated floor 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 plate frame 2, and realize the longitudinal connection of the frame side columns 1 through the embedded parts 3. The adjacent prefabricated The connection of the floor slabs 41 is a cast-in-place belt 42 . Pre-embedded steel plates are pre-embedded around the core tube 5, and short I-beams 43 are welded on the pre-embedded steel plates. 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 means of bolt fasteners. The design of the embedded steel plate and the short I-beam 43 has the effect of facilitating the assembly of the construction personnel. Below the cast-in-place belt 42, a square steel pipe 32 or an I-beam welded and fixed with the long beam or the short beam is arranged. The square steel pipe 32 or the I-beam is used to support the cast-in-place belt 42 to improve its casting stability.

When the modular unit frame column-column is combined horizontally, the long steel strip 21 welded with the steel sheet 26 is inserted through a frame side column 1, and the corresponding steel sheet 26 is inserted through the waist-shaped hole 11 of the frame side column 1. After passing through, it penetrates into the waist-shaped hole 11 of the other frame side column 1, and then welds the short steel strip 22 welded with the steel sheet 26 to the end of the long steel strip 21, and then welds the partition 23 with the through hole 24 to the end. In the frame side column 1 where the short steel plate is located, the steel strip formed by the long steel strip 21 and the short steel strip 22 is supported and fixed, and then the steel bar 25 is passed through the through hole 24 on the partition plate 23 and the corresponding through hole on the steel plate 26. Horizontal connection of two frame side posts 1. Finally, concrete is poured in the frame side column 1 to realize the horizontal assembly of the modular unit frame column-column.

When the modular unit frame column-column needs to be combined vertically after horizontal combination, one end of the baffle as the embedded part 3 protrudes from the frame side column 1, and the other end is recessed from the frame side column 1, which can be directly used for the modular unit frame column-column vertical assembly.

During the assembly of the building system based on the modular unit frame column-column connection node, after the modular unit frame column-column is combined, the long beams and short beams are lapped according to requirements, and the prefabricated floor slabs 41 are lapped on the corresponding long beams and short beams. , the connection of the adjacent prefabricated floor slabs 41 is cast-in-place. 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 to complete the column-column connection node based on the modular unit frame. Assembly of building systems.

Example 2

As shown in Figures 3 and 4, the modular unit frame column-column connection node, the difference between Embodiment 2 and Embodiment 1 is that the connecting steel frame 2 includes long steel strips 21, welded on both ends of the long steel strips 21. Short steel strips 22 and 12 steel plates 26 uniformly longitudinally welded on the long steel strips 21 and the short steel strips 22, the steel plates 26 are provided with corresponding through holes which are convenient for piercing the steel bars 25; The side is the support plate 15, the rectangular frame 14 on the support plate 15 is convenient for the four groups of steel plates 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 plate protrudes from the frame side column 1 , and the other end is recessed into the frame side column 1 . The support plate 15 and the baffle plate play the role of connecting the two frame side columns 1 longitudinally. The four steel plates 26 pass through the rectangular frame 14 and are connected to a corresponding set of frame side columns 1 to improve the connection stability of the connecting steel plate frame 2 and the frame side columns 1. The grouting holes 12 play a role in facilitating the circulation of concrete in the frame side columns 1. effect.

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

Example 3

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

The embedded part 3 includes a connecting steel plate 35 , a clamping block 34 welded on the end of the connecting steel plate 35 , and a shear-resisting piece passing through the middle of the connecting steel plate 35 .

When the modular unit frame column-column needs to be combined vertically after horizontal combination, select the connecting steel plate 35 of the appropriate specification according to the needs. The upper and lower sides of the ends are welded with a clamping block 34 with a through hole 24, and a channel steel 31 with a stud is welded in the middle of the connecting steel plate 35. When only two frame side columns 1 are required for longitudinal extension, a square connecting steel plate 35 is selected, the upper and lower sides of the four ends of the connecting steel plate 35 are welded with the clamping block 34 with the through hole 24, and the middle of the connecting steel plate 35 is welded with a bolt Two sets of channel steels 31 of the nails, the upper and lower free ends of the channel steels 31 are respectively penetrated into the side columns 1 of different frames to resist shearing. The building system based on modular unit frame column-column connection nodes is shown in Figures 14 and 15.

Example 4

As shown in Figures 10 and 11, the embedded parts for the column-column longitudinal connection of the modular unit frame, the difference between Embodiment 2 and Embodiment 1 is that the shearing parts are square steel pipes 32 uniformly welded with studs. The building system based on modular unit frame column-column connection nodes is shown in Figures 16 and 17.

Example 5

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

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. 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 Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should all be included in the scope of the claims of the present invention.

Claims (9)

1. A modular unit frame column-column connection node is characterized by comprising two frame side columns, a connection steel plate frame for horizontally connecting the frame side columns and embedded parts 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 ends of the long steel plate strip and a plurality of steel plate pieces longitudinally welded on the long steel plate strip and the short steel plate strips, and through holes which correspond to each other and are convenient for steel bars to penetrate through are formed in the steel plate pieces; the end face of each frame side column is provided with a notch in a concave-like shape, and one side, opposite to each frame side column, of each frame side column is provided with a through groove through which a steel plate can conveniently penetrate; the frame side column is provided with a plurality of grouting holes.

2. The modular unit frame post-post connection node of claim 1, wherein the frame side post notched end is flanked by wing plates, the through slot is cut in the wing plates and is a kidney-shaped hole adapted to the steel plate sheet, and a gusset plate is connected between the same frame side post wing plates; and a baffle plate used as an embedded part is connected between the wing plate and the inner wall of the frame side column, one end of the baffle plate extends out of the frame side column, the other end of the baffle plate is sunken into the frame side column, and grouting holes are uniformly formed in the baffle plate.

3. The modular unit frame column-column connection node of claim 1, wherein a support plate is provided at one side of the frame side column gap, and the through groove is provided on the support plate and is a rectangular frame for facilitating the simultaneous penetration of a plurality of sets of steel plates; the baffle is connected between the supporting plate and the inner wall of the frame side column, one end of the supporting plate and one end of the baffle, which are used as embedded parts, extend out of the frame side column, the other end of the supporting plate and one end of the baffle are sunken into the frame side column, and the grouting holes are uniformly formed in the supporting plate and the baffle.

4. The modular unit frame column-column connection node of claim 1, wherein the embedment members include connection steel plates, clamping blocks welded to end portions of the connection steel plates, and shear members inserted through the middle portions of the connection steel plates.

5. The modular unit frame post-post connection node of claim 2, wherein a bulkhead with through-holes is welded into the frame side post corresponding to the short steel slat.

6. The modular unit frame column-column connection node of claim 4, wherein the shear resistant member is a channel steel, a square steel pipe, or a section steel to which studs are uniformly welded.

7. A building construction system based on modular unit frame column-column connection nodes is characterized by comprising a core barrel and a modular unit frame fixedly connected to the periphery of the core barrel, wherein the modular unit frame comprises frame side columns, prefabricated floor slabs, long beams and short beams connected between the frame side columns according to any one of claims 1 to 6, the horizontal connection of the frame side columns is achieved through connecting steel plate frames, the longitudinal connection of the frame side columns is achieved through embedded parts, and the connection position of adjacent prefabricated floor slabs is a cast-in-place belt.

8. The housing construction system based on the modular unit frame column-column connection node as claimed in claim 7, wherein embedded steel plates are embedded around the core cylinder, short H-shaped steel is welded on the embedded steel plates, long H-shaped steel is welded on the frame side column at one side where the modular unit frame and the embedded steel plates are connected, and the long H-shaped steel and the corresponding short H-shaped steel are fixedly connected through bolt fasteners.

9. The housing construction system based on the column-column connection node of the modular unit frame as claimed in claim 8, wherein a square steel pipe or an i-steel beam welded and fixed with the long beam or the short beam is provided under the cast-in-place belt.

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