CN211286276U

CN211286276U - Prefabricated steel reinforced concrete beam

Info

Publication number: CN211286276U
Application number: CN201921012764.7U
Authority: CN
Inventors: 卞光华
Original assignee: JIANGSU PROVINCIAL ARCHITECTURAL D&R INSTITUTE Ltd
Current assignee: Jiangsu architectural design and Research Institute Co.,Ltd.
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-08-18
Anticipated expiration: 2029-07-02

Abstract

The utility model relates to a civil engineering field discloses a prefabricated shaped steel concrete beam. The structure comprises a transverse precast beam, wherein steel sections which are arranged in a full length mode are pre-embedded in the precast beam, two ends of the steel sections extend to the outer portion of the precast beam, and the tail ends of two sides of the steel sections form a connecting portion. The prefabricated steel reinforced concrete beam in the utility model is connected by the pre-embedded steel in the prefabricated beam, so that the tensile strength of steel and the compressive property of concrete are fully utilized, and the prefabricated steel reinforced concrete beam has higher bearing capacity, better anti-fatigue capability and better anti-seismic performance; in addition, the placing of the beam can be realized by matching the prefabricated columns provided with the brackets, so that the support is avoided, and the efficiency of field component installation and the strength and safety of the frame structure are improved.

Description

Prefabricated steel reinforced concrete beam

Technical Field

The utility model relates to a civil engineering field, in particular to prefabricated shaped steel concrete beam.

Background

The prefabricated assembly type building is a building mode formed by splicing an assembly type integral framework formed by splicing a plurality of prefabricated beam column components, wherein the beam column components are easy to standardize and finalize and the production quality of a factory is guaranteed compared with the traditional cast-in-place framework, and the prefabricated assembly type building is a building structure system which is widely researched and applied in the existing domestic assembly type structure. However, the quality of the connection of the precast beam and column members becomes a major research and engineering application difficulty.

The steel reinforced concrete structure is an important novel structural system in modern engineering structures, has the common advantages of common concrete structures and steel structures, has the advantages of high bearing capacity, high rigidity, good earthquake resistance, good fire resistance and durability and the like, and is widely applied to super high-rise and large span structures. At present, the research on the prefabricated steel reinforced concrete composite beam is less, so that a novel prefabricated steel reinforced concrete column which has excellent performance and convenient construction and meets the requirements of building industrialization is needed to solve the problems of strength, connection quality and the like of the existing reinforced concrete column.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a prefabricated shaped steel concrete beam.

According to the utility model discloses an aspect provides a prefabricated shaped steel concrete beam, precast beam including horizontal setting, pre-buried in the precast beam has the shaped steel that leads to long arranging, and the both ends of shaped steel all extend to the outside of precast beam, and the both sides end of shaped steel all forms a connecting portion.

The prefabricated steel reinforced concrete beam in the utility model is connected by the pre-embedded steel in the prefabricated beam, so that the tensile strength of steel and the compressive property of concrete are fully utilized, and the prefabricated steel reinforced concrete beam has higher bearing capacity, better anti-fatigue capability and better anti-seismic performance; in addition, the placing of the beam can be realized by matching the prefabricated columns provided with the brackets, so that the support is avoided, and the efficiency of field component installation and the strength and safety of the frame structure are improved.

In some embodiments, the top of the connecting portion is provided with an ear plate extending to the outside of the connecting portion. Therefore, the precast beam can be temporarily placed by matching the lug plates with the corbels installed on the precast columns.

In some embodiments, the ear plate is inverted T-shaped. From this, set up the concrete structure of otic placode, the bottom of type of falling T structure is the horizontal plane, can be used to connect and shelve, and the top be vertical pin, has still saved the material when guaranteeing that the structure is firm.

In some embodiments, the bottom of the connecting portion converges upward. The connecting part is thus smaller in height than the rest of the section steel and forms a recessed notch in its bottom for resting the section steel and the precast beam.

In some embodiments, the section steel is an i-section steel. From this, set up the kind of shaped steel, the structural symmetry of I-shaped steel then can all carry out comparatively balanced stable reinforcement to the upper and lower both sides of precast beam.

In some embodiments, the precast beam is provided with a plurality of transversely arranged reinforcing bars inside side by side. Therefore, the structure of the precast beam can be further reinforced by arranging some steel bars in the precast beam.

In some embodiments, a plurality of annular ribs are arranged side by side in the precast beam, and each annular rib surrounds the periphery of each reinforcing steel bar. From this, set up annular muscle and can restrict the position of reinforcing bar to guarantee its stability.

In some embodiments, a top portion of each of the annular beads protrudes to an outside of the precast beam. Therefore, the top of each annular rib extends out of the precast beam, and other structures can be arranged on the top of each annular rib as required.

Drawings

Fig. 1 is a schematic structural view of a prefabricated steel reinforced concrete beam according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a prefabricated steel reinforced concrete beam shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the structural steel and the lug plate shown in FIG. 1;

fig. 4 is a schematic structural view of a prefabricated steel reinforced concrete beam according to another embodiment of the present invention.

In the figure: precast beam 1, shaped steel 2, connecting portion 3, otic placode 4, reinforcing bar 5, cyclic annular muscle 6.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a structure of a prefabricated steel reinforced concrete beam according to an embodiment of the present invention, and fig. 2 shows a side structure of the prefabricated steel reinforced concrete beam of fig. 1. As shown in fig. 1 to 3, it includes a precast beam 1 disposed horizontally, the precast beam 1 is made of concrete, vertical section steel 2 arranged throughout the length is embedded in the precast beam 1, and both ends of the section steel 2 extend to the outside of the precast beam 1, that is, both left and right ends of the section steel 2 are exposed to the outside of both left and right sides of the precast beam 1, respectively. The exposed parts of the two ends of the section steel 2 are used for connecting and fixing with a vertical prefabricated column, and therefore the section steel can be called as a connecting part 3.

And a transversely arranged lug plate 4 is arranged at the top of the connecting part 3, and one side of the lug plate 4 far away from the center of the precast beam 1 extends to the outer side of the connecting part 3. Wherein, the ear plate 4 is butt-welded with the connecting plate or connected by a connecting piece, and can be removed or cut off when necessary.

Preferably, the section steel 2 is an i-section steel. The structure of I shaped steel is comparatively symmetrical, can all carry out comparatively balanced stable reinforcement to the upper and lower both ends of prefabricated post.

Preferably, the ear plate 4 is of an inverted T shape, the bottom of the ear plate is a horizontal plane and can be used for connection and placement, and the top of the ear plate is a vertical slender rod, so that the material is saved while the structural stability is ensured.

Preferably, a plurality of transversely arranged reinforcing bars 5 are provided in the precast beam 1, and the reinforcing bars 5 can further reinforce the structure of the precast beam 1. Wherein, a reinforcing bar 5 can be divided into several rows and arrange the setting side by side in precast beam 1 on the height of difference, and under the condition that does not influence precast beam 1 and connect and use, can all extend to precast beam 1's outside with the both ends that partial reinforcing bar 5 extends to even, both ends expose respectively outside precast beam 1's the left and right sides about reinforcing bar 5 promptly, can bury in the pouring layer when the construction, further stabilize precast beam 1.

Preferably, in the precast beam 1, a plurality of ring-shaped ribs 6 are arranged side by side from one end to the other end thereof, and each ring-shaped rib 6 surrounds the periphery of each reinforcing bar 5. The ring-shaped ribs 6 can restrict the position of the reinforcing bars 5 to ensure the stability thereof.

Preferably, the top of each annular rib 6 extends out of the precast beam 1. Then, if necessary, some other structure, such as a transverse longitudinal rib or the like, may be provided on top of each annular rib 6 for further fixed connection with the prefabricated column.

When the precast beam 1 is installed, the vertical precast columns are stably arranged, and the bracket can be installed on the vertical precast columns, wherein the side surface of the bracket extends out of a position for placing; then hoisting the precast beam 1 to a corresponding position, placing the lug plate 4 on the bracket, and conveniently and fixedly connecting the side end of the connecting part 3 on the precast beam with the side end of the bracket; and after the connection is completed, the ear plate 4 can be removed or cut off as desired.

Fig. 4 schematically shows a structure of a prefabricated section steel 2 concrete beam according to another embodiment of the present invention. As shown in fig. 4, when the precast beam 1 is provided at a place for placing, instead of providing the lug plate at the top of the connecting portion 3, the bottom of the connecting portion 3 may be optionally contracted upward so that the height of the connecting portion 3 is smaller than the other portions of the section steel 2, thereby forming a recessed notch at the bottom thereof. When the precast beam 1 is installed, the notch can be directly placed on the bracket, then the precast beam 1 can be connected, and the dismantling or cutting work is not needed after the connection is finished, so that the efficiency of the installation work of the precast beam 1 is further improved.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. The utility model provides a prefabricated shaped steel concrete roof beam which characterized in that: including horizontal precast beam (1) that sets up, pre-buried in precast beam (1) has general length to arrange shaped steel (2), and the both ends of shaped steel (2) all extend to the outside of precast beam (1), and at the both sides end of shaped steel (2) all forms a connecting portion (3), wherein, the top of connecting portion (3) is provided with otic placode (4), otic placode (4) extend to the outside of connecting portion (3).

2. A precast reinforced concrete beam as recited in claim 1, wherein: the ear plate (4) is in an inverted T shape.

3. A precast steel reinforced concrete beam according to any one of claims 1 to 2, wherein: the section steel (2) is I-shaped steel.

4. A precast steel reinforced concrete beam according to claim 3, wherein: the interior of precast beam (1) is provided with many reinforcing bars (5) of horizontal setting side by side.

5. A precast steel reinforced concrete beam according to claim 4, wherein: a plurality of annular ribs (6) are arranged in the precast beam (1) side by side, and the annular ribs (6) surround the periphery of the reinforcing steel bars (5).

6. A precast steel reinforced concrete beam according to claim 5, wherein: the top of each annular rib (6) extends out of the precast beam (1).