CN219365534U - Reinforcing bar planting bar connection structure that back anchor roof beam construction was used - Google Patents
Reinforcing bar planting bar connection structure that back anchor roof beam construction was used Download PDFInfo
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- CN219365534U CN219365534U CN202320729491.8U CN202320729491U CN219365534U CN 219365534 U CN219365534 U CN 219365534U CN 202320729491 U CN202320729491 U CN 202320729491U CN 219365534 U CN219365534 U CN 219365534U
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Abstract
The utility model discloses a steel bar planting bar connecting structure for post-anchoring beam construction, which relates to the technical field of building construction and comprises ribbed steel bars, a clamping mechanism and a connecting assembly, wherein the ribbed steel bars sequentially comprise a first screw rod section, a middle section and a second screw rod section along the length direction of the ribbed steel bars, and the clamping mechanism is arranged on the first screw rod section and is in threaded fit with the first screw rod section. The connecting assembly is arranged on the second screw rod section and comprises a second locking nut and a connecting sleeve, the second locking nut and the connecting sleeve are in threaded fit with the second screw rod section, and the connecting sleeve is located on one side, deviating from the middle section, of the second locking nut. The full length of the bar planting part of the ribbed steel bar is cut into threads, and the full-thread screw is adopted to improve the anchoring effect of the bar planting. The locking nut clamps the bar planting on the concrete base surface, so that the risk of falling out of the bar planting later stress is reduced, the shearing bearing capacity is improved, the convenience and the working efficiency of the connection of the bar planting and the beam longitudinal bar are improved by the connecting component, and the adverse effect of welding high temperature on bar planting glue is avoided.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a steel bar planting connection structure for post-anchoring beam construction.
Background
The reinforcement technology is widely applied to the field of reinforcement of existing structures and the field of anchoring connection after newly built structures. In order to facilitate operation during construction, a ribbed steel bar with a certain length and the same diameter as the designed ribbed steel bar is selected for field reinforcement, and after the reinforcement-embedding glue curing is finished, the beam ribbed steel bar and the exposed part of the ribbed steel bar are bound and lapped or welded. The exposed part of the ribbed steel bar is fixedly connected with the beam longitudinal bar of the rear anchoring beam, and the two schemes are mainly adopted for connection. The scheme one adopts the ligature overlap joint, if put ligature overlap joint in same connection district, does not satisfy current standard requirement, and the connection effect is relatively poor. If the steel bars are placed in the two connecting sections, the lengths of the ribbed steel bars to be planted with the steel bars are different, the longitudinal beam steel bars are correspondingly required to be different in length, and the construction convenience is greatly reduced. The second scheme adopts welding connection, the specification requires that the welding point is more than 15d from the surface of the base material concrete, and the wet towel impregnated by ice water is adopted to wrap the root of the exposed part of the bar planting glue in a multi-layer manner, so that the construction site is difficult to strictly realize, and the welding high temperature inevitably causes adverse effect on the anchoring effect of the bar planting glue.
After the post-pouring beam is removed from the mould, the planted bars are subjected to shearing deformation under the combined action of the dead weight of the beam and the constant-load live load of the floor, the planted bar glue is slightly separated from the planted bar section, larger cracks are generated at the interface between the new concrete and the old concrete at the beam end, the protection of the concrete to the steel bars in the alkaline environment is greatly weakened, the effect of clamping the steel bars on the concrete base surface is weak, and the shearing bearing capacity is lower. There is therefore a need for further improvements and enhancements in the art.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a steel bar planting connection structure for post-anchoring beam construction, which solves the problems that the connection is inconvenient and the construction convenience is poor due to the adoption of a binding and lapping mode in the planting bar connection, and the anchoring effect of the planting bar adhesive is reduced due to the adoption of a welding connection mode in a welding high-temperature manner, the shearing deformation of the planting bar adhesive causes the micro-release of the planting bar section, the action of clamping the planting bar on a concrete base surface is weak, and the shearing bearing capacity is low.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a reinforcing bar planting muscle connection structure that back anchor roof beam construction was used, includes ribbed steel bar, fixture and coupling assembling, ribbed steel bar is first lead screw section, interlude and second lead screw section along its length direction in proper order, fixture sets up on first lead screw section, and with first lead screw section screw thread fit.
The connecting assembly is arranged on the second screw rod section and comprises a second locking nut and a connecting sleeve, the second locking nut and the connecting sleeve are in threaded fit with the second screw rod section, and the connecting sleeve is located on one side, deviating from the middle section, of the second locking nut.
Further, the ribbed steel bar is of a straight bar body structure, and the end surfaces of the two ends of the ribbed steel bar are both planes and perpendicular to the axial direction of the ribbed steel bar.
The diameter of the ribbed steel bar is d, and d is more than or equal to 16mm and less than or equal to 20mm.
Further, the circumferential surfaces of the first screw rod section and the second screw rod section are respectively provided with external threads, the first screw rod section is a bar planting section, and the length of the bar planting section is L 1 ，450mm≤L 1 ≤600mm。
The length of the second screw rod section is L 2 ，L 2 ≥80mm。
Further, the clamping mechanism comprises a first lock nut and a gasket, the first lock nut is screwed on the first screw rod section, the gasket is sleeved on the first screw rod section and is located on one side, deviating from the middle section, of the first lock nut.
Further, the clamping mechanism comprises a flanged nut screwed onto the first screw section with a flange portion thereof located on a side remote from the intermediate section.
Further, the connecting sleeve is a straight circular tube with a uniform cross section, and the inner wall of the circumference of the connecting sleeve is provided with an inner screw thread matched with the second screw rod section.
The sum of the axial length of the connecting sleeve and the axial length of the second lock nut is smaller than or equal to the length of the second screw rod section.
Further, the gasket is a circular metal sheet, and the inner diameter of the gasket is larger than the diameter of the first screw rod section.
By adopting the technical scheme, the utility model has the beneficial technical effects that: the utility model can reasonably select the diameter of the longitudinal bar of the beam in the design link by reversely restricting the model of the product, the full length of the bar planting part of the ribbed steel bar is cut into threads, and the anchoring effect is improved by adopting a full-thread screw. The locking nut clamps the bar planting on the concrete base surface, so that the risk of falling out of the bar planting later stress is reduced, the shearing bearing capacity is improved, the convenience and the working efficiency of the connection of the bar planting and the beam longitudinal bar are improved by the connecting component, and the adverse effect of welding high temperature on bar planting glue is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a first implementation of the present utility model.
Fig. 2 is a usage state diagram of the first implementation of the present utility model.
Fig. 3 is a schematic structural view of the ribbed steel bar of the present utility model.
Fig. 4 is a schematic structural diagram of a second implementation of the present utility model.
Fig. 5 is a usage state diagram of a second implementation of the present utility model.
Detailed Description
The utility model is described in detail below with reference to the attached drawing figures:
embodiment 1, with reference to fig. 1 to 3, a reinforcement bar planting connection structure for post-anchoring beam construction includes a ribbed steel bar 1, a clamping mechanism and a connection assembly, the ribbed steel bar 1 is a straight bar structure, and the diameter of the ribbed steel bar 1 is d, and d may be preferably 16, 18 or 20. The ribbed steel bar 1 is provided with a first screw rod section 11, a middle section 12 and a second screw rod section 13 from left to right in sequence along the length direction, the end faces of the left end and the right end of the ribbed steel bar 1 are both planes and are perpendicular to the axial direction of the ribbed steel bar 1, the left end and the right end of the ribbed steel bar 1 are flush, and in a use state, the first screw rod section 11 of the ribbed steel bar 1 is required to be implanted into a drilling hole of a reinforced concrete wall or column and is anchored into the reinforced concrete wall or column through a reinforced plastic implant.
The circumferential surfaces of the first screw rod section 11 and the second screw rod section 13 are respectively provided with external threads, the first screw rod section 11 is a bar planting section, and the length of the bar planting section is L 1 ，450mm≤L 1 The length of the first screw rod section 11 is less than or equal to 600mm, the first screw rod section 11 needs to be implanted into a reinforced concrete wall and fixed in a column, and the whole length of the first screw rod section 11 is cut into threads, so that the anchoring effect is improved. The length of the second screw rod section 13 is L 2 ，L 2 And the length of the second screw rod section 13 is more than or equal to 80mm, and the second screw rod section 13 is fixedly connected with the beam longitudinal rib 4 of the rear anchoring beam through a connecting assembly.
The clamping mechanism is arranged on the first screw rod section 11 and is in threaded fit with the first screw rod section 11. Specifically, the clamping mechanism comprises a first lock nut 21 and a gasket 22, wherein the first lock nut 21 is screwed on the first screw rod section 11, and the gasket 22 is sleeved on the first screw rod section 11 and is positioned on one side of the first lock nut 21, which is away from the middle section 12.
The gasket 22 is a circular metal sheet, and the inner diameter of the gasket 22 is larger than the diameter of the first screw rod section 11. The gasket 22 is sleeved outside the first screw rod section 11 and can move along the axial direction of the ribbed steel bar 1, and the first lock nut 21 is sleeved outside the first screw rod section 11 and is in threaded fit with the first screw rod section 11. The length of the first screw rod section 11 is larger than the hole depth of a hole drilled on the reinforced concrete wall or the column, and the first lock nut 21 and the gasket 22 are adjusted to the rightmost end of the first screw rod section 11 before the reinforcement is planted. After the bar is planted, a small part of the first screw rod section 11 is exposed outside the wall body, and the ribbed steel bar 1 is clamped on the base surface of the reinforced concrete wall and column through the first locking nut 21 and the gasket 22.
The connecting assembly is arranged on the second screw rod section 13 and comprises a second locking nut 31 and a connecting sleeve 32, the second locking nut 31 and the connecting sleeve 32 are in threaded fit with the second screw rod section 13, and the connecting sleeve 32 is positioned on one side of the second locking nut 31, which is away from the middle section 12.
The connecting sleeve 32 is a straight circular tube with a uniform cross section, and the inner wall of the circumference of the connecting sleeve is provided with an inner screw thread matched with the second screw rod section 13. The sum of the axial length of the connecting sleeve 32 and the axial length of the second lock nut 31 is less than or equal to the length of the second lead screw segment 13.
The corresponding ends of the beam longitudinal bar 4 and the second screw rod section 13 are provided with connectors for threading, the left end of the beam longitudinal bar 4 corresponds to the right end of the ribbed steel bar 1, the connecting sleeve 32 is screwed firstly to enable the left end of the beam longitudinal bar 4 to enter the connecting sleeve 32 and be connected with threads of the connecting sleeve, after the end part of the beam longitudinal bar 4 reaches the middle section position of the connecting sleeve 32, the second locking nut 31 is screwed to the left end face of the connecting sleeve 32, the connecting sleeve 32 is locked, and the fixed connection between the ribbed steel bar 1 and the beam longitudinal bar 4 is realized.
Embodiment 2, with reference to fig. 3 to 5, a reinforcement bar connection structure for post-anchoring beam construction includes a ribbed steel bar 1, a clamping mechanism and a connection assembly, the ribbed steel bar 1 is a straight bar structure, and the diameter of the ribbed steel bar 1 is d, and d may be preferably 16, 18 or 20.
The ribbed steel bar 1 is provided with a first screw rod section 11, a middle section 12 and a second screw rod section 13 from left to right in sequence along the length direction, the end faces of the left end and the right end of the ribbed steel bar 1 are both planes and are perpendicular to the axial direction of the ribbed steel bar 1, the left end and the right end of the ribbed steel bar 1 are flush, and in a use state, the first screw rod section 11 of the ribbed steel bar 1 is required to be implanted into a drilling hole of a reinforced concrete wall or column and is anchored into the reinforced concrete wall or column through a reinforced plastic implant.
The circumferential surfaces of the first screw rod section 11 and the second screw rod section 13 are respectively provided with external threads, the first screw rod section 11 is a bar planting section, and the length of the bar planting section is L 1 ，450mm≤L 1 The length of the first screw rod section 11 is less than or equal to 600mm, the first screw rod section 11 needs to be implanted into a reinforced concrete wall and fixed in a column, and the whole length of the first screw rod section 11 is cut into threads, so that the anchoring effect is improved. The length of the second screw rod section 13 is L 2 ，L 2 And the length of the second screw rod section 13 is more than or equal to 80mm, and the second screw rod section 13 is fixedly connected with the beam longitudinal rib 4 of the rear anchoring beam through a connecting assembly.
The clamping mechanism is arranged on the first screw rod section 11 and is in threaded fit with the first screw rod section 11. In particular, the clamping mechanism comprises a flanged nut 23, which flanged nut 23 is screwed onto the first screw segment 11, the flange portion of which is located on the side remote from the intermediate segment 12.
The flanged nut 23 is sleeved outside the first screw rod segment 11 and is in threaded engagement therewith. The length of the first screw rod section 11 is larger than the hole depth of the hole drilled on the reinforced concrete wall and the column, and before the reinforcement is planted, the flanged nut 23 is adjusted to the rightmost end of the first screw rod section 11. After the reinforcement is planted, a small part of the first screw rod section 11 is exposed outside the wall body, and the ribbed steel bar 1 is clamped on the base surface of the reinforced concrete wall and column through the flanged nuts 23.
The connecting assembly is arranged on the second screw rod section 13 and comprises a second locking nut 31 and a connecting sleeve 32, the second locking nut 31 and the connecting sleeve 32 are in threaded fit with the second screw rod section 13, and the connecting sleeve 32 is positioned on one side of the second locking nut 31, which is away from the middle section 12.
The connecting sleeve 32 is a straight circular tube with a uniform cross section, and the inner wall of the circumference of the connecting sleeve is provided with an inner screw thread matched with the second screw rod section 13. The sum of the axial length of the connecting sleeve 32 and the axial length of the second lock nut 31 is less than or equal to the length of the second lead screw segment 13.
The corresponding ends of the beam longitudinal bar 4 and the second screw rod section 13 are provided with connectors for threading, the left end of the beam longitudinal bar 4 corresponds to the right end of the ribbed steel bar 1, the connecting sleeve 32 is screwed firstly to enable the left end of the beam longitudinal bar 4 to enter the connecting sleeve 32 and be connected with threads of the connecting sleeve, after the end part of the beam longitudinal bar 4 reaches the middle section position of the connecting sleeve 32, the second locking nut 31 is screwed to the left end face of the connecting sleeve 32, the connecting sleeve 32 is locked, and the fixed connection between the ribbed steel bar 1 and the beam longitudinal bar 4 is realized.
Embodiment 3, in combination with fig. 1 to 5, is a method for constructing a reinforcement bar for use in the construction of a rear anchor beam, and the reinforcement bar connection structure of embodiment 1 or embodiment 2 is used. The ribbed steel bar 1 for planting the steel bar is not too thin or too thick, the diameters of the hot rolled ribbed steel bars are 16mm, 18mm or 20mm according to the principle that the specification is few and the selection is convenient, 400mm, 450mm and 500mm are respectively determined according to the calculation result and the experimental depth of the planted steel bar, 75mm of the wire head length is reserved for the steel structure by using a high-strength large hexagon nut and a gasket or a flanged nut, namely the length of a first screw rod section 11 for planting the steel bar is 475mm, 525mm and 575mm respectively, after the maintenance of the planted steel bar glue is finished, the ribbed steel bar 1 is clamped on a reinforced concrete wall and a column by using the nuts according to tightening torque of 100N, 160N or 180N, and the shearing bearing capacity of the ribbed steel bar is improved when the pretension is applied similar to the anchor bolt construction method. The shredding length 60mm+20mm of the second screw rod section 13 connected with the beam longitudinal rib 4 is 60mm of the length of the connecting sleeve 32, and 20mm of the thickness of the second lock nut 31.
Taking hot rolled ribbed steel bars with the diameter of 18 as an example to describe a steel bar planting construction method for post-anchoring beam construction, the method comprises the following steps:
s1, processing a ribbed steel bar by using a special steel bar cutting machine, wherein the ribbed steel bar is 1225mm long, and the end head is cut flat, so that the left end face and the right end face are vertical to the axis and have no warpage.
S2, the threading length of the bar planting section is 525mm, the threading length of the connecting end is 80mm, and nuts with gaskets or nuts with flanges, locking nuts and connecting sleeves are corresponding to parameters of the second screw rod section 13.
S3, pre-screwing a nut with a gasket or a flanged nut, a lock nut and a connecting sleeve on the ribbed steel bar 1 and adjusting the position.
S4, drilling holes and blowing holes on the reinforced concrete wall and column base surfaces, wherein the drilling depth and the perpendicularity meet the standard requirements, and the bar planting is maintained in place.
S5, clamping the ribbed steel bar 1 to the reinforced concrete wall and column base surface according to the tightening torque of 160N.m by using the first locking nut 22 or the flanged nut 23 with the gasket.
S6, measuring the blanking length of the beam longitudinal ribs 4 on site, and connecting a threading. The second lock nut 31 is adjusted to the left end of the second screw section 13 and the connecting sleeve 32 is screwed close to the end of the beam longitudinal rib 4.
After that, the connecting end of the longitudinal beam rib is aligned with the right end of the connecting sleeve 32, the connecting sleeve 32 is reversely screwed to be in threaded connection with the end of the longitudinal beam rib 4, when the end of the longitudinal beam rib 4 reaches the middle position of the connecting sleeve 32, the second locking nut 31 is screwed to be close to the connecting sleeve 32, and the connecting sleeve 32 is locked.
S7, binding stirrups, supporting a formwork, pouring concrete, and removing the formwork after the concrete is solidified.
The parts not described in the utility model can be realized by adopting or referring to the prior art.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.
Claims (7)
1. The steel bar reinforcement connection structure for the construction of the rear anchoring beam is characterized by comprising a ribbed steel bar, a clamping mechanism and a connection assembly, wherein the ribbed steel bar is sequentially provided with a first screw rod section, a middle section and a second screw rod section along the length direction of the ribbed steel bar, and the clamping mechanism is arranged on the first screw rod section and is in threaded fit with the first screw rod section;
the connecting assembly is arranged on the second screw rod section and comprises a second locking nut and a connecting sleeve, the second locking nut and the connecting sleeve are in threaded fit with the second screw rod section, and the connecting sleeve is located on one side, deviating from the middle section, of the second locking nut.
2. The steel bar planting connection structure for post-anchoring beam construction according to claim 1, wherein the ribbed steel bars are straight bar structures, and the end surfaces of the two ends of the ribbed steel bars are plane and perpendicular to the axial direction of the ribbed steel bars;
the diameter of the ribbed steel bar is d, and d is more than or equal to 16mm and less than or equal to 20mm.
3. The steel bar planting connection structure for post-anchoring beam construction according to claim 1, wherein the circumferential surfaces of the first and second screw rod sections are provided with external threads, the first screw rod section is a planting section, and the length is L 1 ,450mm≤L 1 ≤600mm；
The length of the second screw rod section is L 2 ，L 2 ≥80mm。
4. The steel bar planting connection structure for post-anchoring beam construction according to claim 1, wherein the clamping mechanism comprises a first lock nut and a gasket, the first lock nut is screwed on the first screw rod section, the gasket is sleeved on the first screw rod section and is located on one side of the first lock nut away from the middle section.
5. The steel bar planting connection structure for post-anchor beam construction according to claim 1, wherein the clamping mechanism comprises a flanged nut screwed on the first screw rod section, and the flange portion thereof is located at a side far from the middle section.
6. The steel bar planting connection structure for post-anchoring beam construction according to claim 3, wherein the connection sleeve is a straight circular tube with a constant cross section, and the inner wall of the circumference of the connection sleeve is provided with an inner screw thread matched with the second screw rod section;
the sum of the axial length of the connecting sleeve and the axial length of the second lock nut is smaller than or equal to the length of the second screw rod section.
7. The steel bar planting bar connecting structure for post-anchoring beam construction according to claim 4, wherein the gasket is a circular metal sheet, and the inner diameter of the gasket is larger than the diameter of the first screw rod section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729491.8U CN219365534U (en) | 2023-04-04 | 2023-04-04 | Reinforcing bar planting bar connection structure that back anchor roof beam construction was used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729491.8U CN219365534U (en) | 2023-04-04 | 2023-04-04 | Reinforcing bar planting bar connection structure that back anchor roof beam construction was used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219365534U true CN219365534U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320729491.8U Active CN219365534U (en) | 2023-04-04 | 2023-04-04 | Reinforcing bar planting bar connection structure that back anchor roof beam construction was used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219365534U (en) |
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2023
- 2023-04-04 CN CN202320729491.8U patent/CN219365534U/en active Active
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