CN114960937A - Novel quickly-assembled prefabricated concrete structure beam column space node system - Google Patents

Abstract

The invention discloses a novel rapid assembly prefabricated prefabricated concrete structure beam-column space node system, comprising a prefabricated concrete column segment, a prefabricated concrete beam segment, a core composite steel segment and a connecting channel segment, wherein the prefabricated concrete upper column and the lower column pass through The large and small channels embedded in the interior and the combined I-beams inside the outer square steel of the core composite steel section are slotted and inserted to form a sleeve connection, and the combination of the beam end double lugs of the precast concrete beam section and the outer square steel of the core composite steel section is used. The I-beam end lugs form a hinged connection, and then connect the two ends of the upper channel cover plate and the lower channel cover plate connecting the channel section with the embedded steel plate of the precast concrete beam section and the outer casing of the core composite steel section respectively. The steel is welded, the structure of the invention is reasonable, and the beams and columns of the fully prefabricated concrete structure are connected with rigid seismic energy dissipation, which meets the requirements of structural "strong joints" and seismic energy dissipation, and realizes the rapid connection between the precast concrete columns and beams. assembled.

Description

Rapid assembly of new prefabricated concrete structure beam-column space node system

technical field

The invention relates to the technical field of building structures, in particular to a new type of prefabricated prefabricated concrete structure beam-column space node system.

Background technique

With the improvement of people's living standards, the requirements for buildings are also getting higher and higher. The main direction and characteristics of the future development of the modern construction industry are the greening, informatization, intelligence and industrialization of buildings. Prefabricated buildings can be used to a certain extent. Solving the above problems is the future trend of the construction field.

The node connection and seismic performance of prefabricated concrete beam-column have become the bottleneck restricting its development. At present, the commonly used connections of prefabricated concrete structures are mainly divided into wet connections and dry connections. Dry connection can reduce on-site wet work, improve assembly speed, and the construction quality is more guaranteed than wet connection. Converting concrete structure connection to steel structure connection can give full play to the advantages of steel structure connection with natural dry connection.

As one of the connection methods of prefabricated concrete structures, dry connection should be able to ensure that the nodes have the ability to resist axial force, shear force and bending moment, so as to meet the strength and deformation continuity of the joint connection area. Prefabricated concrete structures cannot achieve high strength and deformation continuity, and traditional dry-connected prefabricated concrete structures still have the problems of difficulty in assembly and low efficiency. Therefore, an improved technology is urgently needed to solve the problem. The above problems exist in the prior art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a new type of prefabricated prefabricated concrete structure beam-column space node system, which utilizes prefabricated concrete column segments, prefabricated concrete beam segments, core composite steel segments and connecting channel steel segments to assemble the fully prefabricated prefabricated concrete structure. The beam-column is connected with rigid seismic energy dissipation, which meets the requirements of "strong joint" and seismic energy dissipation of the structure, and realizes the rapid assembly of the connection performance between the precast concrete column and the beam, and solves the problems raised in the above background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: a new type of prefabricated prefabricated concrete structure beam-column space node system, comprising prefabricated concrete column sections, prefabricated concrete beam sections, core composite steel sections and connecting channel steel sections;

The prefabricated concrete column section includes a prefabricated concrete upper column and a prefabricated concrete lower column, a small channel steel is pre-embedded in the prefabricated concrete upper column, a large channel steel is pre-embedded in the prefabricated concrete lower column, and the small channel steel is pre-buried. and large channel steel are double channel steel with surface grooves;

The prefabricated concrete beam section includes a prefabricated concrete beam body, a connector, a pre-embedded steel plate and a beam end double lug plate, the pre-embedded steel plate is arranged at one end of the prefabricated concrete beam body, and the connector is arranged inside the prefabricated concrete beam body and is connected with the prefabricated concrete beam body. The inner side of the embedded steel plate is connected, and one end of the double lug plate at the beam end is connected with the outer side of the embedded steel plate;

The core composite steel section includes an outer square steel and a composite I-beam, the outer square steel is composed of four steel plates with holes coupled with the outer contour size of the composite I-beam on the surface, and the four steel plates with holes pass through the composite I-beam. After the steel is assembled into an outer square steel and welded into an integral core composite steel section, the combined I-beam is located in a part of the flange inside the outer square steel with a clamping groove and is connected with the small channel steel and the large channel steel of the precast concrete column section. Slotted coupling, the part of the end of the combined I-beam extending out of the outer square steel is processed into the shape of a lug plate to be connected with the double lug plate at the beam end;

The connecting channel steel section includes a lower channel type cover plate and an upper channel type cover plate. The surface of the outer square steel is welded and connected, and the top end of the lower grooved cover plate is connected with the bottom end of the upper grooved cover plate.

Preferably, the present invention provides a new type of prefabricated prefabricated concrete structure beam-column space node system, wherein the size and slotting of the small channel steel and the large channel steel of the prefabricated concrete column section are the same as the core composite steel. segment coupling.

Preferably, the present invention provides a new type of prefabricated prefabricated concrete structure beam-column space joint system, wherein the prefabricated concrete beam segment connectors, the embedded steel plates and the beam end double lugs are all steel structures and are welded as a whole.

Preferably, the present invention provides a new type of prefabricated prefabricated concrete structure beam-column space node system, wherein the beam end double lug plate and the combined I-beam of the core combined steel section protrude from the outside of the outer square steel for processing The parts in the shape of the ear plate are all open and are hingedly coupled with each other.

Compared with the prior art, the beneficial effects of the present invention are:

(1) The present invention utilizes prefabricated concrete column sections, prefabricated concrete beam sections, core composite steel sections and connecting channel sections to perform rigid seismic and energy-dissipative connections between beams and columns of fully prefabricated prefabricated concrete structures, so as to meet the requirements of structural "strong joints" and earthquake resistance. The requirements of energy consumption are met, and the connection performance between precast concrete columns and beams can be quickly assembled.

(2) The structure is simple, which is convenient for quick assembly and construction on the site, and because it is a prefabricated part, it is also convenient for classified storage and transportation.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the exploded structure schematic diagram of the present invention;

Figure 3 is a schematic diagram of the coupling connection between the core composite steel section and the prefabricated column channel;

Fig. 4 is a schematic diagram of the slotting of the intermediate flange of the combined I-beam and the slotting of the small channel steel and the large channel steel;

Figure 5 is a schematic diagram of the precast concrete upper column structure;

6 is a schematic diagram of a precast concrete lower column structure;

Fig. 7 is the structural schematic diagram of precast concrete beam section;

Figure 8 is a schematic diagram of the overall structure of the core composite steel section;

Figure 9 is a schematic diagram of the decomposition structure of the core composite steel section;

Figure 10 is a schematic diagram of the structure of the connecting channel steel section.

In the picture: 100-Precast concrete upper column, 101-Precast concrete lower column, 102-Small channel steel, 103-Large channel steel, 200-Precast concrete beam body, 201-Beam end double lug plate, 202-Embedded steel plate, 203- Connector, 300-outsourcing square steel, 301-combination I-beam, 400-lower groove cover, 401-upper groove cover.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention;

It should be noted that, in the description of the present invention, it should be noted that the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end" and "left" The orientation or positional relationship indicated by "right" and the like is based on the orientation or positional relationship shown in the drawings, and is 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 have a specific orientation, It is constructed and operated in a particular orientation and is therefore not to be construed as a limitation of the present invention.

1-10, the present invention provides a technical solution: a new type of prefabricated prefabricated concrete structure beam-column space node system, including prefabricated concrete column segments, prefabricated concrete beam segments, core composite steel segments and connecting channel steels part;

The precast concrete column section includes a precast concrete upper column 100 and a precast concrete lower column 101. The precast concrete upper column 100 is pre-buried with small channel steel 102, and the precast concrete lower column 101 is pre-buried with large channel steel 103, small channel steel 102 and The large channel steel 103 is a double channel steel with surface grooves, the dimensions are coupled, and the groove positions correspond. When the precast concrete upper column 100 and the precast concrete lower column 102 are inserted into the core composite steel section, the small channel steel 102 and the large channel steel can be used. 103 is slotted, and after being inserted into the combined I-beam 301, it is inserted into each other to form a connection; the combined shape is similar to a box shape, which can make the force performance of the joints in different directions similar, and can meet the randomness of resisting earthquake action;

The precast concrete beam section includes a precast concrete beam body 200, a beam end double lug plate 201, a pre-embedded steel plate 202, and a connector 203; In the precast concrete beam body 200, the surface of the double lug plate 201 at the beam end is open, which can be connected with the core composite steel section by hinges. Bolts and other forms strengthen the connection with the precast concrete beam body 200;

The core composite steel section includes outer square steel 300 and composite I-beam 301. The outer square steel 300 consists of four perforated steel plates. The size of the openings is coupled with the outer contour of the combined I-beam 301, and the four perforated steel plates pass through the combination. The I-beam 301 is then assembled into an outer square steel 300, and then welded into an integral core composite steel section. A part of the composite I-beam 301 is located inside the outer square steel 300, and this part of the I-beam flange is slotted to be used with the precast concrete column. After the slots of the small channel steel 102 and the large channel steel 103 are inserted, the sleeves are connected, and the part of the I-beam 301 located outside the outer square steel 300 is assembled, and the end is processed into an open-hole lug plate, which is used to connect with the prefabricated steel. The beam end double lug plate 201 of the concrete beam section is hinged and coupled in size, which can not only bear the load, but also can resist vibration and rotate friction and energy consumption; the inner surface of the outer square steel 300 is welded with studs or other connecting parts to strengthen the internal and secondary pouring concrete bonding;

The connecting channel steel section includes a lower channel cover plate 400 and an upper channel cover plate 401. Both ends of the lower channel cover plate 400 and the upper channel cover plate 401 are respectively connected with the embedded steel plate 202 of the precast concrete beam section and the core composite steel section. The surface of the outer square steel 300 is welded and connected, and the top end of the lower groove cover plate 400 is connected with the bottom end of the upper groove cover plate 401. The groove cover plate can not only transmit the bending moment of the beam end, but also resist the beam end torque.

During the construction process, the precast concrete upper column 100 and the precast concrete lower column 101 of the precast concrete column section can be quickly combined through the combination of the small channel steel 102 and the large channel steel 103 and the outer square steel 300 of the core composite steel section. The slot of the I-beam 301 is snap-connected, and then the inner space of the outer square steel 300 of the core composite steel is grouted and compacted; the beam end double lugs 201 of the precast concrete beam section and the core composite steel are combined with the I-beam. The opening lugs at the end of 301 are connected by hinges, and finally the two ends of the connecting channel steel section are welded and connected to the precast concrete beam section and the core composite steel section respectively, and finally the prefabricated concrete structure beam-column space node is completed. quick assembly.

The specific construction steps are as follows:

Step 1. The surface of the small channel steel 102 and the large channel steel 103 of the precast concrete column section is grooved in the factory, and the processing is completed. The small channel steel 102 and the large channel steel 103 are both double channel steel, and the small channel steel and the large channel steel are combined. Then, it is pre-buried in the precast concrete upper column 100 and the prefabricated concrete lower column 101 respectively, and the overall prefabrication of the factory is completed;

In step 2, the beam end double lugs 201, the embedded steel plate 202 and the connector 203 of the precast concrete beam section are all steel structures, which are processed and welded in the factory as a whole, embedded in the precast concrete beam body 200, and the factory is prefabricated as a whole;

Step 3. The middle flange of the composite I-beam 301 of the core composite steel section is slotted and coupled with the small channel steel 102 and the large channel steel 103 of the precast concrete column section, and the end of the composite I-beam 301 is processed into an ear plate shape , the size and opening are coupled with the beam end double lug plate 201 of the precast concrete beam section, the outer square steel 300 is composed of four steel plates with holes coupled with the outer contour size of the combined I-beam 301 on the surface, and the inner welding bolts of the four opening steel plates Nails or other connectors are used to strengthen the connection of nodes. The perforated steel plate passes through the composite I-beam 301 and is assembled into an outer square steel 300, which is then welded into the overall core composite steel section in the factory;

Step 4. The lower channel cover plate 400 and the upper channel cover plate 401 connecting the channel steel section are processed in the factory;

Step 5. After all components are manufactured in the factory, they are transported to the site for assembly. On the site, the small channel steel 102 and the large channel steel 103 of the precast concrete column section are inserted into the composite I-beam 301 inside the outer square steel 300 of the core composite steel section. , through the reserved slot for socket connection, the space inside the outer square steel 300 is grouted densely, and the rigid connection between the upper and lower columns of the precast concrete column section and the core composite steel section is completed;

Step 6. On the site, use hinges to connect the beam end double lugs 201 of the precast concrete beam section with the lugs at the end of the core composite steel section steel section composite I-beam 301, and then connect the lower channel cover of the channel section. 400 and both ends of the upper channel cover plate 401 are respectively welded and connected to the surface of the embedded steel plate 202 of the precast concrete beam section and the outer square steel 300 of the core composite steel section to complete the rigid connection between the precast concrete beam section and the core composite steel section;

Step 7: After completing the rigid connection between the upper and lower columns of the precast concrete column section and the precast concrete beam section and the core composite steel section, the rapid assembly of the new prefabricated concrete structure beam-column space node system of the present invention is formed.

The present invention utilizes prefabricated concrete column sections, prefabricated concrete beam sections, core composite steel sections and connecting channel steel sections to perform rigid, seismic and energy-dissipative connection of fully prefabricated concrete structure beams and columns, thus forming a new type of rapid assembly of the present invention. The prefabricated concrete structure beam-column space joint system meets the requirements of "strong joint" and seismic energy dissipation of the structure, and greatly improves the connection performance between prefabricated concrete columns and beams; the structure is simple, and it is convenient for rapid assembly and construction on site. And because it is a prefabricated part, it is also easy to classify storage and transportation.

The parts that are not described in detail in the present invention are known techniques of those skilled in the art.

Finally, it should be noted that the above specific 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 embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be described in detail. Modifications and equivalent replacements, without departing from the spirit and scope of the technical solutions of the present invention, should all be included in the scope of the claims of the present invention.

Claims (4)

1. The utility model provides an assemble novel prefabricated assembled concrete structure beam column space node system fast, its characterized in that: the prefabricated concrete beam comprises a prefabricated concrete column section, a prefabricated concrete beam section, a core combined steel section and a connecting groove steel section;

the precast concrete column section comprises a precast concrete upper column and a precast concrete lower column, wherein a small channel steel is pre-embedded in the precast concrete upper column, a large channel steel is pre-embedded in the precast concrete lower column, and the small channel steel and the large channel steel are double-channel steel with grooves formed in the surfaces;

the precast concrete beam section comprises a precast concrete beam body, a connecting piece, a pre-buried steel plate and a beam end double lug plate, wherein the pre-buried steel plate is arranged at one end of the precast concrete beam body;

the core combined steel section comprises outer-coated square steel and combined I-steel, the outer-coated square steel consists of four steel plates, the surfaces of the four steel plates are provided with holes coupled with the outer contour size of the combined I-steel, the four steel plates with holes penetrate through the combined I-steel to be assembled into the outer-coated square steel and welded into the integral core combined steel section, part of flanges of the combined I-steel, which are positioned inside the outer-coated square steel, are provided with clamping grooves and are coupled with small channel steel and large channel steel of the precast concrete column section, and part of ends of the combined I-steel, which extend out of the outer-coated square steel, are processed into lug plate shapes to be connected with double lug plates at the beam end;

the connecting groove steel section comprises a lower groove-shaped cover plate and an upper groove-shaped cover plate, two ends of the lower groove-shaped cover plate and two ends of the upper groove-shaped cover plate are respectively welded with the embedded steel plate of the precast concrete beam section and the outer-covering square steel surface of the core combined steel section, and the top end of the lower groove-shaped cover plate is connected with the bottom end of the upper groove-shaped cover plate.

2. The system of the beam-column space node of the rapidly assembled novel prefabricated concrete structure of claim 1, wherein: the sizes and the grooves of the small channel steel and the large channel steel of the precast concrete column section are coupled with the core combined steel section.

3. The system of the beam-column space node of the rapidly assembled novel prefabricated concrete structure of claim 1, wherein: precast concrete beam section connecting piece, pre-buried steel sheet and beam-ends both ears board are the steel construction and weld as whole.

4. The system of the beam-column space node of the rapidly assembled novel prefabricated concrete structure of claim 1, wherein: the beam end double-lug plate and the combined I-steel of the core combined steel section extend out of the outer square steel wrapping part, the parts processed into lug plate shapes are all provided with holes and are hinged and coupled with each other.

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