CN217870936U - Novel assembled concrete frame node structure - Google Patents

Abstract

The utility model discloses a novel assembled concrete frame node structure in the technical field of building node structures, which comprises a node area big sample structure and a beam connecting structure; the node area bulk sample structure comprises a # -shaped opposite-penetrating steel plate pre-buried in a node area precast concrete beam section, steel sleeves are welded at four outer corners of the # -shaped opposite-penetrating steel plate respectively, and the upper end and the lower end of each steel sleeve are pre-buried in a node area precast concrete column section; girder connection structure includes that node beam section reserves steel sheet and prefabricated end plate, and node beam section reserves the steel sheet and is provided with two of being parallel to each other and constitutes "pi" word structure with prefabricated end plate both sides tailor-welding, and many longitudinal reinforcement anchor sections are reserved to precast concrete superposed beam end, and the longitudinal reinforcement anchor section is through reinforcing bar enlarged footing anchor behind the prefabricated end plate of "pi" word structure, the utility model provides an effectively resist external load's assembled concrete structure system has great engineering value.

Description

A new type of prefabricated concrete frame joint structure

technical field

The utility model relates to the technical field of building node structures, in particular to a novel assembled concrete frame node structure.

Background technique

The prefabricated concrete frame structure has the advantages of less on-site wet work, less construction pollution discharge, and a high degree of industrialization in the production process. It is a building structure system vigorously promoted by the construction industry at present. The beam-column component is an important component in the prefabricated concrete frame structure that bears vertical loads and external horizontal effects. It ensures reliable connection between columns and is an important guarantee for the overall ability of the prefabricated concrete frame structure to effectively resist loads. For the connection form of prefabricated concrete beam-column members, there are a series of related technical achievements. However, the existing prefabricated concrete beam-column connections mostly use sleeves to connect steel bars, and then pour concrete in the joint area. This type of technology has strict requirements for the butt joint accuracy of the steel bars of the two prefabricated components, and the construction quality of the sleeve grouting is difficult. There are construction problems such as weak points between the new and old concrete interfaces between the poured concrete and the prefabricated component concrete after guaranteeing and connecting the joint area, which makes it difficult to guarantee the reliability of the connection, and it is difficult for the beam-column components to realize their mechanical functions, and there are large safety hazards in the prefabricated concrete frame structure .

Based on this, the utility model designs a novel fabricated concrete frame node structure to solve the above problems.

Utility model content

The purpose of the utility model is to provide a novel fabricated concrete frame node structure to solve the above technical problems.

In order to achieve the above purpose, the utility model provides the following technical solutions: a new type of prefabricated concrete frame node structure, including a large-scale structure in the node area and a beam connection structure; the large-scale structure in the node area includes a prefabricated concrete beam section embedded in the node area The inner well-shaped cross-piercing steel plate, the four outer corners of the well-shaped cross-penetrating steel plate are respectively welded with steel sleeves, and the upper and lower ends of the steel sleeve are pre-buried inside the precast concrete column section in the node area; The beam connection structure includes the reserved steel plate for the node beam section embedded in the end of the precast concrete beam section in the node area and the prefabricated end plate embedded in the end of the precast concrete composite beam. The reserved steel plate for the node beam section is provided with parallel The two pieces are welded together with the two sides of the prefabricated end plate to form a "Π" structure, and the end of the precast concrete composite beam is reserved with a plurality of longitudinal reinforcement anchorage sections, and the longitudinal reinforcement anchorage sections run through the "Π" "The prefabricated end plate of the word structure is anchored by the enlarged head of the steel bar.

Preferably, the outer side of the steel sleeve is poured with a prefabricated concrete layer in the node area.

Preferably, the outer side of the "Π" structure is poured with beams connected to the poured concrete layer.

Preferably, the steel sleeve adopts 2mm thick cold-formed thin-wall steel pipe, the yield strength is not less than 235N/mm ² , and the outer diameter of the steel pipe section is 50mm.

Compared with the prior art, the beneficial effects of the utility model are:

The joint structure of the prefabricated concrete frame of the utility model mainly includes the large-scale structure of the joint area and the beam connection structure, and adopts four round steel pipes distributed at the four corners of the column section as the vertical connection of the column components, which solves the problem of using a large amount of reserved space for traditional prefabricated concrete columns. Reinforcement butt joint accuracy is demanding, and it has the advantages of simple connection and reliable lateral resistance. The corresponding construction method has the advantages of less on-site wet work and quick construction. Compared with the ordinary prefabricated system using cast-in-place joints, this The technology avoids the problem that it is difficult to guarantee the quality of post-poured concrete on site, and the construction quality is better and the construction speed is faster.

Description of drawings

In order to more clearly illustrate the technical solutions of the utility model embodiments, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a kind of large sample structure of the joint area of the joint form of the new type assembled concrete frame of the utility model;

Fig. 2 is a kind of new-style prefabricated concrete frame node form of the utility model well-shaped to pass through the steel plate welding big sample structure;

Fig. 3 is a large-scale structure of the joint area of a new type of assembled concrete frame joint form of the utility model.

In the accompanying drawings, the list of parts represented by each label is as follows:

100-Large sample structure in the node area, 110-Precast concrete beam section in the node area, 120-Tick-shaped opposite steel plate, 130-Precast concrete column section in the node area, 140-Steel casing, 150-Precast concrete layer in the node area, 200- Beam connection structure, 210-joint beam section reserved steel plate, 220-precast concrete composite beam, 230-precast end plate, 240-longitudinal reinforcement anchorage section, 250-rebar expansion head, 260-beam connection pouring concrete layer.

Detailed ways

The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the protection scope of the utility model.

Please refer to Figure 1-2, the utility model provides a technical solution: a new type of prefabricated concrete frame node structure, including a large-scale structure 100 in the node area and a beam connection structure 200; the large-scale structure in the node area includes prefabricated The well-shaped cross-piercing steel plates 120 inside the concrete beam section 110 are respectively welded with steel sleeves 140 at the four outer corners of the well-shaped cross-penetration steel plates 120, and the upper and lower ends of the steel sleeves 140 are pre-embedded in the precast concrete column section in the node area Inside 130, the steel casing 140 adopts 2mm thick cold-formed thin-walled steel pipe, the yield strength is not less than 235N/mm ² , the outer diameter of the steel pipe section is 50mm, and four round steel pipes distributed at the four corners of the column section are used as the vertical connection of the column member. It solves the problem that traditional prefabricated concrete columns use a large number of reserved steel bars to meet the demanding precision requirements, and the outer side of the steel casing 140 is poured with a precast concrete layer 150 in the node area;

The beam connection structure 200 includes the steel plate 210 reserved for the node beam section embedded in the end of the precast concrete beam section 110 in the node area and the prefabricated end plate 230 embedded in the end of the precast concrete composite beam 220. The reserved steel plate 210 for the node beam section Two pieces parallel to each other are arranged and welded with the two sides of the prefabricated end plate 230 to form a "Π" structure. A plurality of longitudinal reinforcement anchorage sections 240 are reserved at the end of the precast concrete composite beam 220, and the longitudinal reinforcement anchorage sections 240 run through the "Π" After the prefabricated end plate 230 of the "" character structure is anchored by the reinforcement head 250, the outer side of the "Π" structure is poured with a beam to connect the poured concrete layer 260.

Working principle example:

Referring to Fig. 1-2, a large-scale structure 100 in the node area of a new type of prefabricated concrete frame node structure includes a cross-shaped steel plate 120 and a prefabricated concrete beam section 110 in the joint area, wherein the cross-shaped steel plate 120 is embedded in two In the prefabricated concrete beam section 110 in the joint area of two directions, in the prefabricated production workshop, the steel plate is first connected to the joint area to form a square shape, and then the steel casing 140 is connected to the steel plate 120 in the square shape. The upper and lower ends of the casing 140 are pre-embedded in the precast concrete column section 130 in the node area, and the two are connected by fillet welds. Finally, the precast concrete layer 150 in the node area and the precast concrete column section 130 in the node area are concreted.

Referring to Fig. 3, a beam connection structure 200 of a new type of prefabricated concrete frame node structure, including a reserved steel plate 210 for the node beam section, a prefabricated end plate 230, a prefabricated concrete composite beam 220, a longitudinal reinforcement anchorage section 240, and a reinforcement expansion head 250 In the prefabricated production workshop, the reserved steel plate 210 of the prefabricated joint beam section protrudes a certain distance from the precast concrete beam section 110 in the joint area, and the prefabricated end plate 230 is used to weld the reserved steel plate 210 of the joint beam section, and the prefabricated end plate 230 is on the Holes are reserved, and the end of the precast concrete composite beam 220 is reserved with a longitudinal steel bar anchorage section 240. During on-site assembly and construction, the longitudinal steel bar anchorage section 240 extends into the reserved hole on the prefabricated end plate 230, and a steel bar expansion head 250 is used to prevent longitudinal The steel bar anchorage section 240 is pulled out, and the beam connection beam connection pouring concrete layer 260 is used for connection.

In the description of the utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top ", "inner", "front", "central", "both ends" and other indications are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate in a specific orientation, and thus should not be construed as limiting the utility model.

In the utility model, unless otherwise clearly stipulated and limited, terms such as "installation", "installation", "connection", "fixation" and "rotary connection" should be understood in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary; it can be the internal communication of two components or the interaction relationship between two components Unless otherwise clearly defined, those skilled in the art can understand the specific meanings of the above terms in the utility model according to specific situations.

Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the utility model and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. The utility model provides a novel assembled concrete frame node structure which characterized in that: the large sample structure comprises a node area large sample structure (100) and a beam connecting structure (200); the node area bulk sample structure comprises a groined-shaped through steel plate (120) pre-buried in a node area precast concrete beam section (110), four outer corners of the groined-shaped through steel plate (120) are respectively welded with a steel sleeve (140), and the upper end and the lower end of the steel sleeve (140) are pre-buried in a node area precast concrete column section (130); beam connection structure (200) are including inlaying and locating steel sheet (210) are reserved to the node beam section of node district precast concrete beam section (110) tip and inlay in precast end plate (230) of precast concrete superposed beam (220) tip, node beam section reserve steel sheet (210) be provided with two that are parallel to each other and with precast end plate (230) both sides tailor-welding constitutes "pi" word structure, many longitudinal reinforcement anchor sections (240) are reserved to precast concrete superposed beam (220) end, longitudinal reinforcement anchor section (240) run through expand head (250) anchor behind precast end plate (230) of "pi" word structure.

2. A novel fabricated concrete frame node structure according to claim 1, wherein: and a node area precast concrete layer (150) is poured on the outer side of the steel sleeve (140).

3. A novel fabricated concrete frame node structure according to claim 1, wherein: and a beam is poured on the outer side of the n-shaped structure and connected with a poured concrete layer (260).

4. A novel fabricated concrete frame node structure according to claim 1, wherein: the steel sleeve (140) is a cold-bending thin-wall steel pipe with the thickness of 2mm, and the yield strength is not lower than 235N/mm ² And the outer diameter of the section of the steel pipe is 50mm.

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