CN211735742U - Connecting joint of precast beam and cast-in-place structure - Google Patents
Connecting joint of precast beam and cast-in-place structure Download PDFInfo
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- CN211735742U CN211735742U CN201921868696.4U CN201921868696U CN211735742U CN 211735742 U CN211735742 U CN 211735742U CN 201921868696 U CN201921868696 U CN 201921868696U CN 211735742 U CN211735742 U CN 211735742U
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Abstract
The utility model relates to a connected node of precast beam and cast-in-place structure. The connecting node of the precast beam and the cast-in-place structure comprises two cast-in-place structures and a precast beam; a reinforcement cage is pre-embedded in the cast-in-place structure; the precast beam comprises a precast layer, gluten and a plurality of first stirrups, each first stirrup is fixedly connected to the upper side of the precast layer, and the plurality of first stirrups are distributed at intervals along the longitudinal direction of the precast layer to form an inserting channel; the gluten includes two son gluten, and every son gluten includes relative anchor end and alternates the end, two son gluten alternate the end and penetrate the passageway by the relative both ends on prefabricated layer respectively to mutual fixed connection, the anchor end of two son gluten is fixed connection respectively in the steel reinforcement cage in the cast-in-place structure that corresponds. The utility model discloses well utilize the end that alternates of two sub-gluten to alternate first stirrup, avoided the anchor end to alternate first stirrup, more convenient the interlude, need not reduce working strength with the help of instruments such as crowbar, shortened the engineering time.
Description
Technical Field
The utility model relates to an assembly type structure field especially relates to a connected node of precast beam and cast-in-place structure.
Background
At present, prefabricated building becomes the modernization development trend of the building industry in China, and the prefabricated building refers to a building which is formed by prefabricating assembly parts in a factory and transporting the assembly parts to a construction site for assembly. The assembly type building not only can improve the quality of the building engineering, but also can obviously reduce the building energy consumption.
However, when assembling the prefabricated secondary beam in the prior art, gluten with bent anchors at two ends needs to be arranged, and the bent anchors at two ends need to be anchored into the cast-in-place main beam. Because the both ends of gluten all have curved anchor, be not convenient for alternate, often need with the help of instruments such as crowbar, lead to working strength big, the engineering time is long.
SUMMERY OF THE UTILITY MODEL
On the basis, the connecting node of the prefabricated beam and the cast-in-place structure for improving the defects is provided for solving the problems that gluten of the prefabricated secondary beam is not convenient to penetrate during assembly, so that the working strength is high and the construction time is long.
The connecting node of the precast beam and the cast-in-place structure comprises two cast-in-place structures and precast beams, wherein two opposite ends of the precast beams are respectively connected with the two cast-in-place structures;
a reinforcement cage is pre-embedded in the cast-in-place structure;
the precast beam comprises a precast layer, a gluten and a plurality of first stirrups, each first stirrup is fixedly connected to the upper side of the precast layer, and the first stirrups are distributed at intervals along the longitudinal direction of the precast layer to form an inserting channel extending along the longitudinal direction of the precast layer;
the gluten includes two sub-gluten, every sub-gluten includes relative anchor end and alternates the end, two sub-gluten alternate the end respectively by the relative both ends on prefabricated layer penetrate alternate the passageway to mutual fixed connection, two sub-gluten anchor end fixed connection respectively in corresponding in the cast-in-place structure the steel reinforcement cage.
Above-mentioned precast beam and cast-in-place structure's connected node, the gluten includes two sub-gluten. Can insert the interlude passageway with the end of interlude of these two sub-mucedings through the relative both ends of precast beam respectively, run through first stirrup promptly in proper order. When two son gluten alternate in place, with the interlude end fixed connection of two son gluten to make the anchor end of two son gluten fixed connection respectively in the steel reinforcement cage in two cast-in-place structures. Therefore, the utility model discloses in utilize the end that alternates of two sub-gluten to alternate first stirrup, avoided the anchor end to alternate first stirrup, the operation of conveniently alternating more need not reduce working strength with the help of instruments such as crowbar, shortened the engineering time.
In one embodiment, the precast beam further includes a cast-in-place layer formed on an upper side of the precast layer, and the plurality of first stirrups are embedded in the cast-in-place layer.
In one embodiment, the cast-in-place layer is integrally cast with the two cast-in-place structures.
In one embodiment, the penetrating ends of the two sub-gluten are welded to each other.
In one embodiment, the penetrating ends of the two sub-gluten bodies are overlapped by a first preset length, and the overlapped parts of the penetrating ends of the two sub-gluten bodies are welded and connected.
In one embodiment, the first preset length is greater than or equal to 1 × lae.
In one embodiment, the gluten comprises two, and the two gluten are arranged in the penetration channel side by side.
In one embodiment, in the longitudinal direction of the prefabricated layer, the penetrating end welding joints of the two gluten are arranged in a staggered mode.
In one embodiment, in the longitudinal direction of the prefabricated layer, the welding connection position of the two sub-gluten of the two gluten is located between the middle part and one end of the prefabricated layer.
In one embodiment, two of the sub-gluten of the gluten are respectively bound and fixed with the corresponding first stirrup.
Drawings
Fig. 1 is a schematic structural diagram of a connection node between a precast beam and a cast-in-place structure in an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, an embodiment of the present invention provides a connection node of a precast beam and a cast-in-place structure, including a precast beam 20 and two cast-in-place structures 10. The two cast-in-place structures 10 are oppositely arranged, and the two opposite ends of the precast beam 20 are respectively connected to the two cast-in-place structures 10. In particular, the cast-in-place structure 10 may be a cast-in-place main beam, which is the main load beam. The precast beam 20 is a branch (i.e., a secondary beam) of the cast-in-place main beam, is attached to the cast-in-place main beam, and has a small bearing capacity. It is understood that the cast-in-place structure 10 may be other reinforced concrete structures, and is not limited thereto.
The precast beam 20 includes a precast layer 22, gluten 26, and a plurality of first stirrups 24. Each first stirrup 24 is fixedly connected to the upper side of the prefabricated layer 22, and the plurality of first stirrups 24 are arranged at intervals along the longitudinal direction of the prefabricated layer 22 to form an insertion channel extending along the longitudinal direction of the prefabricated layer 22.
A reinforcement cage 12 is embedded in the cast-in-place structure 10. Gluten 26 includes two sub-gluten 261, each sub-gluten 261 including opposing anchor end 261b and piercing end 261 a. The penetrating ends 261a of the two sub-gluten 261 penetrate through the penetrating channels from the two opposite ends of the prefabricated layer 22 respectively and are fixedly connected with each other to form a whole gluten 26. The anchoring ends 261b of the two sub-gluten 261 are respectively and fixedly connected to the reinforcement cage 12 in the corresponding cast-in-place structure 10, so that the connection strength of the precast beam 20 and the cast-in-place structures 10 at the two ends thereof is improved.
Above-mentioned precast beam and cast-in-place structure's connected node, gluten 26 includes two sub-gluten 261. The penetration ends 261a of the two sub-gluten frames 261 may be inserted into the penetration channels through the opposite ends of the precast girders 20, respectively, i.e., sequentially penetrate the first stirrups 24. When two sub-gluten 261 alternate in place, with the end 261a fixed connection that alternates of two sub-gluten 261 to make the anchor end 261b of two sub-gluten 261 fixed connection respectively in the steel reinforcement cage 12 in two cast-in-place structures 10. Therefore, the utility model discloses in utilize two sub-gluten 261's end 261a that alternates to alternate first stirrup 24, avoided anchor end 261b to alternate first stirrup 24, more conveniently alternate the operation, need not reduce working strength with the help of instruments such as crowbars, shortened the engineering time.
It should be noted that fig. 1 shows only a connection structure of one end of the precast girders 20 to the cast-in-place structure 10 for the convenience of viewing. The other end of the precast beam 20 is similar to the connecting structure of another cast-in-place structure 10 and thus is not shown in fig. 1.
In the embodiment of the present invention, the precast beam 20 further includes a cast-in-place layer (not shown) formed on the upper side of the precast layer 22. A plurality of first stirrups 24 are pre-buried in the cast-in-place layer. Because the first stirrups 24 are fixedly connected to the prefabricated layer 22 and are pre-embedded in the cast-in-place layer, the bonding strength between the prefabricated layer 22 of the prefabricated beam 20 and the cast-in-place layer is enhanced. It can be understood that, because the gluten 26 is interpenetrated in the interpenetration channel surrounded by the plurality of first stirrups 24, the gluten 26 is also pre-embedded in the cast-in-place layer, and the opposite ends (i.e. the anchoring ends 261b of the two sub-gluten 261) of the gluten 26 are located outside the cast-in-place layer, so as to anchor into the cast-in-place structure 10.
In the embodiment, the cast-in-place layer of the precast beam 20 is integrally cast with the cast-in-place structure 10. In this way, the precast layer 22 of the precast beam 20 and the cast-in-place structure 10 are integrally cast, so that the precast beam 20 and the cast-in-place structure 10 are connected.
In this embodiment, the construction steps of the connection node of the precast beam and the cast-in-place structure are as follows:
hoisting the precast layer 22 of the precast beam 20 between the two cast-in-place structures 10;
arranging a reinforcement cage 12 in the cast-in-place structure 10;
penetrating ends 261a of two sub-gluten bodies 261 of the gluten 26 into the penetrating channels from two ends of the precast beam 20, fixing the penetrating ends 261a of the two sub-gluten bodies 261 to be fixedly connected with each other, and respectively and fixedly connecting anchoring ends 261b of the two sub-gluten bodies 261 to the reinforcement cages 12 in the two cast-in-place structures 10;
and pouring to form a cast-in-place layer of the precast beam 20 and two cast-in-place structures 10.
It will be appreciated that in order to cast form a cast-in-place layer and two cast-in-place structures 10, it is also necessary to install formwork or the like which encloses the casting space. Further, in order to facilitate the insertion of the sub-gluten 261, a side template located on the cast-in-place structure 10 and departing from the precast beam 20 needs to be arranged after the sub-gluten 261 is inserted in place, so that the interference between the sub-gluten 261 and the template is avoided.
The embodiment of the utility model provides an in, two sub-gluten 261's interlude end 261a welded connection each other is favorable to guaranteeing precast beam 20's structural strength.
In some embodiments, the penetrating ends 261a of the two sub-gluten bodies 261 of the gluten 26 overlap by a first preset length in the longitudinal direction of the prefabricated layer 22. The overlapped portions of the penetrating ends 261a of the two sub-gluten pieces 261 are welded. Thus, it is advantageous to secure the connection strength of the two sub-gluten 261.
In an embodiment, the first predetermined length is greater than or equal to 1 × lae. Wherein, lae represents the length of the longitudinal tension steel bar for anti-seismic anchoring. The calculation of lae is well known in the art and therefore will not be described herein. Thus, the welding connection strength of the two sub-gluten 261 is ensured.
In some embodiments, the precast beam 20 includes two gluten 26, and the two gluten 26 are disposed side by side in the penetration passage. So, set up two gluten 26, be favorable to improving precast beam 20's structural strength.
In particular, in the embodiment, the two gluten bars 26 are welded and connected in a staggered manner in the longitudinal direction of the prefabricated layer 22. Further, the two gluten bars 26 are welded and connected at a second predetermined distance from each other in the longitudinal direction of the preform layer 22. The second predetermined length is 0.2 × lae to 0.4 × lae. Preferably, the second preset length is 0.3 × lae. In this manner, it is advantageous to secure the structural strength of the precast girders 20.
In the embodiment, in the longitudinal direction of the prefabricated layer 22, the welding connection position of the two sub-gluten 261 of the two gluten 26 is located between the middle part of the prefabricated layer 22 and one end of the prefabricated layer 22. Preferably, in the longitudinal direction of the prefabricated layer 22, the welding connection position of the two sub-gluten 261 of the two gluten 26 is located at one third of the prefabricated layer 22 and is arranged in a staggered manner.
In the embodiment of the utility model, two sub-gluten 261 of gluten 26 are fixed with the ligature of the first stirrup 24 that corresponds respectively. So, when two sub-gluten 261 of muscle 26 alternate the back of targetting in place, with sub-gluten 261 ligature on first stirrup 24 to fixed gluten 26.
In the embodiment of the present invention, the reinforcement cage 12 in the cast-in-place structure 10 includes four main reinforcements 121 and a plurality of second stirrups 123. Generally, the second stirrups 123 are rectangular, a plurality of second stirrups 123 are arranged at intervals along the longitudinal direction of the cast-in-place structure 10, and four main reinforcements 121 are partially bound to the corners of each second stirrup 123, so as to form the reinforcement cage 12. In specific embodiments, the reinforcement cage 12 further includes a waist rib 125, the waist rib 125 is disposed between two adjacent main ribs 121, and the waist rib 125 is tied to the second stirrup 123, thereby being beneficial to increasing the strength of the reinforcement cage 12.
It is understood that the shape of the second stirrup 123 is not limited to a rectangle, and other shapes are possible, and are not limited herein. The number of the main ribs 121 is not limited to four, and may be set according to the shape of the second stirrup 123, which is not limited herein.
In the embodiment of the utility model, the anchor end 261b of the sub-gluten 261 is bent to form a bent anchor. Alternatively, the anchoring end 261b of the sub-gluten 261 is bent by 90 ° to form the bent anchor. Thus, anchoring into the cast-in-place structure 10 is beneficial to enhancing the connection strength of the precast beam 20 and the cast-in-place beam.
It should be noted that the anchoring end 261b is not limited to be anchored in the cast-in-place structure 10 by a bent anchor structure, and may be anchored by other anchoring structures, and is not limited herein.
In particular embodiments, the anchoring end 261b of the sub-gluten 261 is tied or welded to the main and/or lumbar tendons.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A connection node of a precast beam and a cast-in-place structure is characterized by comprising two cast-in-place structures and precast beams, wherein the two opposite ends of the precast beams are respectively connected with the two cast-in-place structures;
a reinforcement cage is pre-embedded in the cast-in-place structure;
the precast beam comprises a precast layer, a gluten and a plurality of first stirrups, each first stirrup is fixedly connected to the upper side of the precast layer, and the first stirrups are distributed at intervals along the longitudinal direction of the precast layer to form an inserting channel extending along the longitudinal direction of the precast layer;
the gluten includes two sub-gluten, every sub-gluten includes relative anchor end and alternates the end, two sub-gluten alternate the end respectively by the relative both ends on prefabricated layer penetrate alternate the passageway to mutual fixed connection, two sub-gluten anchor end fixed connection respectively in corresponding in the cast-in-place structure the steel reinforcement cage.
2. The precast beam and cast-in-place structure connection node according to claim 1, further comprising a cast-in-place layer formed on an upper side of the precast layer, wherein the plurality of first stirrups are embedded in the cast-in-place layer.
3. A precast beam and cast-in-place structure connecting node according to claim 2, characterized in that the cast-in-place layer is integrally cast with the two cast-in-place structures.
4. A connection node of a precast beam and a cast-in-place structure according to claim 1, wherein the penetration ends of the two sub-wheat gluten are welded to each other.
5. A connection node of a precast beam and a cast-in-place structure according to claim 4, wherein the penetration ends of the two sub-gluten are overlapped by a first preset length, and the overlapped parts of the penetration ends of the two sub-gluten are welded.
6. A connection node of a precast beam and a cast-in-place structure according to claim 5, wherein the first preset length is greater than or equal to 1 × lae.
7. A connection node of precast beam and cast-in-place structure according to claim 5, characterized in that, the gluten comprises two, two said gluten are arranged side by side in the penetration channel.
8. A connection node of a precast beam and a cast-in-place structure according to claim 7, characterized in that the welding connection positions of the insertion ends of the two gluten are arranged in a staggered manner in the longitudinal direction of the precast layer.
9. A connection node of a precast beam and a cast-in-place structure according to claim 7, characterized in that the welding connection of the two sub-gluten of the two gluten is located between the middle part and one end of the precast layer in the longitudinal direction of the precast layer.
10. A connection node of a precast beam and a cast-in-place structure according to any one of claims 1 to 9, wherein two sub-gluten of the gluten are respectively bound and fixed with the corresponding first stirrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868696.4U CN211735742U (en) | 2019-11-01 | 2019-11-01 | Connecting joint of precast beam and cast-in-place structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868696.4U CN211735742U (en) | 2019-11-01 | 2019-11-01 | Connecting joint of precast beam and cast-in-place structure |
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| CN211735742U true CN211735742U (en) | 2020-10-23 |
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| CN201921868696.4U Active CN211735742U (en) | 2019-11-01 | 2019-11-01 | Connecting joint of precast beam and cast-in-place structure |
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| CN (1) | CN211735742U (en) |
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