CN219732277U - Shelve formula prefabrication owner, secondary beam construction connection structure - Google Patents
Shelve formula prefabrication owner, secondary beam construction connection structure Download PDFInfo
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- CN219732277U CN219732277U CN202321247572.0U CN202321247572U CN219732277U CN 219732277 U CN219732277 U CN 219732277U CN 202321247572 U CN202321247572 U CN 202321247572U CN 219732277 U CN219732277 U CN 219732277U
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- prefabricated
- girder
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- secondary beam
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000009417 prefabrication Methods 0.000 title claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- 230000000284 resting effect Effects 0.000 claims abstract description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 20
- 230000003014 reinforcing effect Effects 0.000 description 10
- 238000011065 in-situ storage Methods 0.000 description 8
- 238000005056 compaction Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The utility model discloses a construction connection structure of a resting type prefabricated main beam and a resting type prefabricated secondary beam, belongs to the field of civil engineering, and solves the problem of weak connection of the resting type prefabricated main beam and the resting type prefabricated secondary beam; the prefabricated main beam comprises a prefabricated main beam, a prefabricated secondary beam, steel corbels and support pads, wherein main beam bottom reinforcing steel bars are pre-buried at the inner bottom of the prefabricated main beam, one end or two ends of the main beam bottom reinforcing steel bars are leaked out of the side wall of the prefabricated main beam, secondary beam bottom reinforcing steel bars are pre-buried at the inner bottom of the prefabricated secondary beam, and one end of each secondary beam bottom reinforcing steel bar is leaked out of the side wall of the prefabricated secondary beam; the side surfaces of the steel corbels are connected with the side surfaces of the prefabricated main beams, support pads are arranged on the upper surfaces of the steel corbels, and the prefabricated secondary beams are placed on the support pads, so that the prefabricated main beams and the prefabricated secondary beams are at the same horizontal plane height; the steel bars at the bottom of the main beam and the steel bars at the bottom of the secondary beam are fixedly connected through a steel bar connector. The utility model improves the integrity of the concrete after pouring, strengthens the shear strength of the end part of the secondary beam and improves the construction efficiency.
Description
Technical Field
The utility model belongs to the field of civil engineering, and particularly relates to a construction connection structure for a resting type prefabricated primary beam and a resting type prefabricated secondary beam.
Background
Three types of common primary and secondary beam nodes exist in the traditional prefabricated assembly structure:
1. the post-pouring section is arranged at the main beam
The joint of the main beams is provided with a transverse groove, the end parts of the secondary beams are erected at the groove, the connection of the main beams and the secondary beams is realized through the concrete in the groove area of the cast-in-situ main beams, the construction speed of the joint is high, but the groove of the prefabricated main beams causes local weakness of the components, so that the quality problems such as breakage, crack and the like easily occur when the prefabricated main beams are hoisted or transported
2. The post-pouring section is arranged at the secondary beam
The cast-in-situ section is reserved at the end part of the precast secondary beam, and after the cast-in-situ section is connected with the bottom longitudinal ribs reserved at the side edges of the main beam, the cast-in-situ section is poured to realize the connection with the main beam, and the node ensures the integrity of the precast main beam, but a bottom die is required to be supported at the cast-in-situ section of the secondary beam, so that the convenience of assembly construction is weakened, and even if a notch is reserved at the end part of the secondary beam, the risk of easy folding in the transportation or hoisting stage is increased.
3. Rest type
The end part of the secondary beam is directly placed on the bracket or the lug on the side edge of the main beam, and the mode is most convenient, but the problem is that the clear bracket is arranged to influence the clearance or the look and feel; the end part of the secondary beam is designed to be a notch beam by the dark bracket, the local section is weakened greatly, the shearing bearing capacity of the end part of the secondary beam is affected, and the bottom rib of the secondary beam cannot enter the main beam.
Disclosure of Invention
Based on the defects, the utility model provides a construction connection structure for the primary and secondary beams of the rest type prefabrication, which solves the problem of weak connection of the primary and secondary beams of the rest type prefabrication.
The technical scheme adopted by the utility model is as follows: the utility model provides a shelve formula prefabrication owner, secondary beam construction connection structure, includes prefabricated girder, prefabricated secondary beam, steel bracket and a pad, the inside bottom of prefabricated girder pre-buried have girder bottom reinforcing bar, girder bottom reinforcing bar's one end or both ends leak outside the lateral wall of prefabricated girder, the inside bottom of prefabricated secondary beam pre-buried have secondary beam bottom reinforcing bar, secondary beam bottom reinforcing bar's one end leak outside the lateral wall of prefabricated secondary beam; the side surface of the steel bracket is detachably and fixedly connected with the side surface of the prefabricated main beam, a support pad is arranged on the upper surface of the steel bracket, and the prefabricated secondary beam is arranged on the support pad, so that the prefabricated main beam and the prefabricated secondary beam are at the same horizontal plane height; the main beam bottom steel bars and the secondary beam bottom steel bars are fixedly connected through a steel bar connector, and gaps are reserved between the prefabricated main beams and the prefabricated secondary beams for filling concrete.
Further, when prefabricated girder and prefabricated secondary beam be single-span primary and secondary beam connection, one side of prefabricated girder placed the prefabricated secondary beam, girder bottom reinforcing bar be the form of bending, girder bottom reinforcing bar's one end leak outside the lateral wall of prefabricated girder, girder bottom reinforcing bar leak end and secondary beam bottom reinforcing bar leak end through reinforcing bar connector fixed connection.
Further, when the prefabricated girder and the prefabricated secondary girder are connected by multi-span main and secondary girders, the prefabricated secondary girders are respectively placed on two sides of the prefabricated girder, the steel bars at the bottom of the girder are in a horizontal straight line shape, two ends of the steel bars at the bottom of the girder are respectively leaked out of two side walls of the prefabricated girder, and each end of the steel bars at the bottom of the girder is respectively fixedly connected with the steel bars at the bottom of the secondary girder at the side through a steel bar connector.
Furthermore, the adjacent side surfaces of the prefabricated main beams and the prefabricated secondary beams are respectively provided with shear key grooves with the same height and size.
Further, the bottom of the side surface of the prefabricated secondary beam adjacent to the prefabricated main beam is provided with an inclined retaining groove.
The utility model has the following advantages and beneficial effects: the utility model improves the integrity of the concrete after pouring, strengthens the shear strength of the end part of the secondary beam, improves the construction efficiency, and achieves the design index of equivalent cast-in-situ appearance and strength after construction.
Drawings
FIG. 1 is a single span primary and secondary beam connection node connection graph;
FIG. 2 is a multi-span primary and secondary beam connection node connection graph;
wherein, 1, prefabricating a main girder; 2. prefabricating secondary beams; 3. reinforcing steel bars at the bottom of the secondary beam; 4. a steel bar at the bottom of the girder; 5. steel corbels; 6. a steel bar connector; 7. a support pad; 8. and the template can be disassembled.
Detailed Description
The features of the present utility model and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
example 1
As shown in fig. 1, a construction connection structure for a rest type precast primary and secondary beams comprises a precast main beam 1, a precast secondary beam 2, a steel bracket 5 and a support pad 7, wherein when the precast main beam 1 and the precast secondary beam 2 are connected by a single-span main secondary beam, the precast secondary beam 2 is arranged on one side of the precast main beam 1, a main beam bottom reinforcing steel bar 4 is pre-embedded at the inner bottom of the precast main beam 1, the main beam bottom reinforcing steel bar 4 is in a bent shape, one end of the main beam bottom reinforcing steel bar 4 leaks out of the side wall of the precast main beam 1, a secondary beam bottom reinforcing steel bar 3 is pre-embedded at the inner bottom of the precast secondary beam 2, one end of the secondary beam bottom reinforcing steel bar 3 leaks out of the side wall of the precast secondary beam 2, a bolt is pre-embedded on one side of the precast main beam 1, a support pad 7 is arranged on the side of the steel bracket 5, the steel bracket 5 and the support pad 7 are detachably and fixedly connected by bolts, the steel bracket 5 and the support pad 7 are temporarily supported, the steel bracket 5 and the support pad 7 can be detached and reused, the precast beam 2 and the support pad 7 are arranged on the same level and the precast beam 2; the method comprises the steps of firstly screwing a reinforcing steel bar connector 6 to the root of a reinforcing steel bar 3 at the bottom of a secondary beam before butt joint in construction, screwing the reinforcing steel bar connector 6 to the two reinforcing steel bars to realize connection after the two reinforcing steel bars are aligned, arranging detachable templates 8 for pouring on two sides of a prefabricated main beam 1 and a prefabricated secondary beam 2, leaving a gap C1 of 80mm between the prefabricated main beam 1 and the prefabricated secondary beam 2, allowing micro-expanded concrete in a post-pouring area to enter the bottom of the secondary beam, arranging an inclined retaining groove C2 of 160mm at the bottom of the side surface of the prefabricated secondary beam 2 adjacent to the prefabricated main beam 1, and arranging a height h of 130mm to facilitate vibration compaction during concrete pouring; shear key grooves with the same height and size are formed in the adjacent side surfaces of the prefabricated main beams 1 and the prefabricated secondary beams 2 and are used for reinforcing the binding force of new and old concrete; after the concrete pouring is finished and the strength reaches the standard, the steel corbels 5 and the support pads 7 can be disassembled, and after the embedded bolts are cut, the appearance and the strength of the connection part of the prefabricated main beam 1 and the prefabricated secondary beam 2 reach the standard of equivalent cast-in-situ.
Example 2
As shown in fig. 2, a construction connection structure for a resting type precast main beam and an auxiliary beam comprises a precast main beam 1, a precast auxiliary beam 2, steel corbels 5 and a support pad 7, wherein when the precast main beam 1 and the precast auxiliary beam 2 are connected by multi-span main beams, the precast auxiliary beam 2 is respectively placed on two sides of the precast main beam 1, a main beam bottom reinforcing steel bar 4 is pre-embedded at the inner bottom of the precast main beam 1, the main beam bottom reinforcing steel bar 4 is in a horizontal straight line shape and is subjected to direct burying treatment, two ends of the main beam bottom reinforcing steel bar 4 are respectively leaked out of two side walls of the precast main beam 1, one end of the auxiliary beam bottom reinforcing steel bar 3 is leaked out of the side wall of the precast auxiliary beam 2, bolts are pre-embedded on two side surfaces of the precast main beam 1, two side surfaces of the precast main beam 1 are respectively and detachably and fixedly connected with the steel corbels through the bolts and nuts, the support pad 7 is pre-embedded on the upper surface of the steel corbels 5, the corbels 5 and the support pad 7 are temporarily supported, the steel corbels 5 and the support pad 7 are in a horizontal straight line shape, the two ends of the main beam bottom reinforcing steel corbels 4 can be repeatedly buried by the same thickness as the precast main beam 2, and the support pad 7 is placed on the precast main beam 2, and the precast main beam 2 is different from the precast main beam 2, and the support pad is arranged between the two different from the precast main beam 2 and the precast main beam 2; before butt joint is constructed, firstly, installing a steel bar connector 6 at the root of a steel bar 3 at the bottom of each secondary beam, screwing the steel bar connector 6 to the two steel bars to realize connection after the two steel bars are aligned, and operating according to the operation on the other side; the two sides of the prefabricated main beam 1 and the prefabricated secondary beam 2 are provided with detachable templates 8 for pouring, a gap C1 is reserved between the prefabricated main beam 1 and the prefabricated secondary beam 2 to be 80mm, micro-expansion concrete in a post-pouring area enters the bottom of the secondary beam, an inclined retaining groove C2 is arranged at the bottom of the side surface of the prefabricated secondary beam 2 adjacent to the prefabricated main beam 1 to be 160mm, and the height h is 130mm, so that vibration compaction and tamping are convenient during concrete pouring; the adjacent side surfaces of the prefabricated main beams 1 and the prefabricated secondary beams 2 are respectively provided with shear key grooves with the same height and size, the binding force of new and old concrete is enhanced, after the concrete pouring is finished, after the strength reaches the standard, the steel corbels 5 and the support pads 7 can be detached, and after the embedded bolts are cut, the appearance and the strength of the joint of the prefabricated main beams 1 and the prefabricated secondary beams 2 reach the standard of equivalent cast-in-situ.
Claims (5)
1. The utility model provides a shelve formula prefabrication owner, secondary beam construction connection structure, includes prefabricated girder, prefabricated secondary beam, steel bracket and a pad, its characterized in that: the bottom of the inner part of the prefabricated girder is pre-embedded with girder bottom steel bars, one end or two ends of the girder bottom steel bars leak out of the side wall of the prefabricated girder, the bottom of the inner part of the prefabricated secondary girder is pre-embedded with secondary girder bottom steel bars, and one end of the secondary girder bottom steel bars leak out of the side wall of the prefabricated secondary girder; the side surface of the steel bracket is detachably and fixedly connected with the side surface of the prefabricated main beam, a support pad is arranged on the upper surface of the steel bracket, and the prefabricated secondary beam is arranged on the upper part of the support pad, so that the prefabricated main beam and the prefabricated secondary beam are at the same horizontal plane height; the main beam bottom steel bars and the secondary beam bottom steel bars are fixedly connected through a steel bar connector, and gaps are reserved between the prefabricated main beams and the prefabricated secondary beams for filling concrete.
2. The construction connection structure for the resting type prefabricated primary and secondary beams according to claim 1, wherein: when the prefabricated girder and the prefabricated secondary girder are connected through the single-span main secondary girder, the prefabricated secondary girder is placed on one side of the prefabricated girder, the steel bars at the bottom of the girder are bent, one ends of the steel bars at the bottom of the girder are leaked out of the side wall of the prefabricated girder, and the leakage ends of the steel bars at the bottom of the girder and the leakage ends of the steel bars at the bottom of the secondary girder are fixedly connected through a steel bar connector.
3. The construction connection structure for the resting type prefabricated primary and secondary beams according to claim 1, wherein: when the prefabricated girder and the prefabricated secondary girder are connected through multi-span main and secondary girders, the prefabricated secondary girders are respectively placed on two sides of the prefabricated girder, the steel bars at the bottom of the girder are in a horizontal straight line shape, two ends of the steel bars at the bottom of the girder are respectively leaked out of two side walls of the prefabricated girder, and each end of the steel bars at the bottom of the girder is respectively fixedly connected with the steel bars at the bottom of the secondary girder at the side through a steel bar connector.
4. A shelve-type prefabricated primary and secondary beam construction connection structure according to any one of claims 1-3, wherein: the side surfaces of the prefabricated main beams and the prefabricated secondary beams, which are adjacent to each other, are provided with shear key grooves with the same height and size.
5. The construction connection structure for the resting type prefabricated primary and secondary beams according to claim 4, wherein: the bottom of the side surface of the prefabricated secondary beam adjacent to the prefabricated main beam is provided with an inclined retaining groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321247572.0U CN219732277U (en) | 2023-05-23 | 2023-05-23 | Shelve formula prefabrication owner, secondary beam construction connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321247572.0U CN219732277U (en) | 2023-05-23 | 2023-05-23 | Shelve formula prefabrication owner, secondary beam construction connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219732277U true CN219732277U (en) | 2023-09-22 |
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ID=88055788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321247572.0U Active CN219732277U (en) | 2023-05-23 | 2023-05-23 | Shelve formula prefabrication owner, secondary beam construction connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219732277U (en) |
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2023
- 2023-05-23 CN CN202321247572.0U patent/CN219732277U/en active Active
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