CN211873312U - Cantilever beam - Google Patents
Cantilever beam Download PDFInfo
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- CN211873312U CN211873312U CN202020429129.5U CN202020429129U CN211873312U CN 211873312 U CN211873312 U CN 211873312U CN 202020429129 U CN202020429129 U CN 202020429129U CN 211873312 U CN211873312 U CN 211873312U
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Abstract
The utility model relates to an overhanging beam, which comprises a beam body, wherein the beam body is connected to the existing structural beam, the upper part of the beam body is provided with a first stressed rib, the lower part of the beam body is provided with an erecting rib, the lower part of the structural beam is provided with a second stressed rib, the structural beam is provided with a connecting rib corresponding to the position of the beam body, the connecting rib is distributed with a plurality of ribs along the direction of the beam length, the connecting rib is connected with the second stressed rib, the upper part of the connecting rib extends out of the structural beam and has a gap with the structural beam, the upper part of the connecting rib is provided with a third stressed rib towards one side of the structural beam, and the third stressed rib is uniformly distributed along the direction; the roof beam body is including encorbelmenting section and linkage segment, and first atress muscle one end is located the linkage segment, and the first atress muscle that is located the linkage segment is provided with the crotch section, and the crotch section includes vertical section and horizontal segment, and the vertical setting of vertical section is connected bottom and horizontal segment, and the horizontal segment is connected with the third atress muscle of process. The utility model discloses have the effect that still can be connected when cantilever beam and structure roof beam height are inconsistent.
Description
Technical Field
The utility model belongs to the technical field of the building engineering technique and specifically relates to a cantilever beam is related to.
Background
Currently, a beam with one end buried or cast on a support and the other end extending out of the support is called a cantilever beam. The upper part of the cantilever beam structure is pulled, the lower part is pressed, and the connecting position of the cantilever beam and the support is mainly influenced by the downward rotating bending moment.
The existing Chinese patent with the publication number of CN208586746U discloses a steel bar connecting structure of a cantilever beam and a secondary beam, which solves the problem that the joint of the common cantilever beam and the secondary beam has cracks due to insufficient structural strength; the secondary beam is vertically arranged with the cantilever beam, the top of the secondary beam is attached to the top of the cantilever beam, and the bottom of the secondary beam extends out of the bottom of the cantilever beam; and the reinforcing structure is arranged at the joint of the cantilever beam and the secondary beam.
The above prior art solutions have the following drawbacks: when cantilever beam height is greater than the secondary beam height, among the prior art, cantilever beam tip position will misplace from top to bottom with secondary beam hookup location, and at this moment, the reinforcing bar of atress in the cantilever beam is difficult to be connected with the reinforcing bar of atress in the secondary beam, will be unfavorable for being connected between cantilever beam and the secondary beam.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art existence, the utility model aims at providing an overhanging beam.
The above object of the present invention is achieved by a cantilever beam, comprising a beam body connected to an upper portion of an existing structural beam, wherein the upper portion of the beam body is provided with a first stressed rib, a lower portion of the beam body is provided with a standing rib, a lower portion of the structural beam is provided with a second stressed rib along a direction of a full length of the beam, the structural beam is vertically provided with a connecting rib corresponding to a position of the beam body, the connecting rib is distributed with a plurality of pieces along the direction of the full length of the beam, the connecting rib is arranged in a rectangular frame shape, the connecting rib is connected with the second stressed rib, the upper portion of the connecting rib extends out of the structural beam and has a gap with the structural beam, the upper portion of the connecting rib is provided with a plurality of third stressed ribs towards one side of the structural beam, the third stressed ribs are uniformly distributed along a width direction of the structural beam, and the direction of the full length of the third stressed ribs is arranged along the; the roof beam body is including encorbelmenting section and linkage segment, roof beam body linkage segment is connected on the structure roof beam, first atress muscle one end is stretched out the section of encorbelmenting and is located the linkage segment, and the first atress muscle that is located the linkage segment is provided with the crotch section, the crotch section is L shape, the crotch section includes vertical section and horizontal segment, the vertical setting of vertical section is connected with the horizontal segment bottom, the horizontal segment sets up along structure roof beam width direction, the horizontal segment is connected with the third atress muscle of process.
Through adopting above-mentioned technical scheme, the section of encorbelmenting of the roof beam body forms for the mill is prefabricated, sets up the support frame that is used for supporting the section of encorbelmenting in advance below the section of encorbelmenting before the installation of the roof beam body, and the linkage segment carries out concrete placement for in-situ reinforcing bar in the roof beam body and the structural beam after the reinforcing bar is connected and is accomplished. The first stress rib extending into the connecting section is connected with the third stress rib through the horizontal section of the hook section, the third stress rib bears the tensile force transmitted by the first stress rib, the tensile force is transmitted to the connecting rib connected with the second stress rib in the structural beam, and the tensile force borne by the upper portion of the beam body is transmitted to the structural beam. The diameter of the connecting rib is larger than or equal to that of the first stress rib. The height of the cantilever beam is larger than that of the structural beam, and the force in the cantilever beam is transmitted to the second stress rib in the structural beam through the matching of the hook section, the third stress rib and the connecting rib, so that the cantilever beam higher than the structural beam can be connected to the structural beam.
The present invention may be further configured in a preferred embodiment as: the horizontal section is connected to the lower end face of the third stress rib.
Through adopting the technical scheme, this structure is cantilever beam structure, and the internal first atress muscle of roof beam mainly bears the pulling force, compares in the up end of connecting in the third atress muscle mainly rely on connected mode and third atress muscle to form wholly, connects in the horizontal segment of terminal surface under the third atress muscle for adhesive force between third atress muscle and the concrete, third atress muscle self intensity and third atress muscle and joint strength homoenergetic between the joint strength muscle and the joint rib can provide the restraint for the horizontal segment, thereby strengthen the utility model discloses an overall strength.
The present invention may be further configured in a preferred embodiment as: one end of the horizontal section is connected with the vertical section, the other end of the horizontal section is far away from the vertical section, and one end of the horizontal section, which is far away from the vertical section, is connected with a vertical anchoring section.
Through adopting above-mentioned technical scheme, the joint strength between horizontal segment and the concrete can be strengthened to the anchor section of vertical setting.
The present invention may be further configured in a preferred embodiment as: the joint position of the connecting rib is positioned inside the structural beam.
Through adopting above-mentioned technical scheme, the splice bar forms confined stirrup pattern for buckling, and the crisscross formation in splice bar axial both ends connects, makes to connect and is located inside the structure roof beam, and when the splice bar received the power of third atress muscle transmission, the joint that is located inside the structure roof beam can be retrained by the concrete of structure roof beam, can improve the whole steadiness of splice bar.
The present invention may be further configured in a preferred embodiment as: the lower surface of the overhanging section is arranged from the connecting section to the other end in an upward inclined mode, and the frame vertical ribs are matched with the overhanging section in an inclined mode.
Through adopting above-mentioned technical scheme, the lower surface slope setting of the section of encorbelmenting, upper surface level sets up, and the roof beam body is variable cross-section beam structure, and the roof beam body is from the linkage segment and encorbelment the section hookup location and play to encorbelmenting the one end cross-section that the linkage segment was kept away from to the section of encorbelmenting and diminish gradually to reduce the section dead weight of encorbelmenting, reduce the pulling force that this structure upper portion bore and transmitted, improve the security and the steadiness of.
The present invention may be further configured in a preferred embodiment as: one end of the vertical rib in the length direction extends into the connecting section, and one end of the vertical rib extending into the connecting section is connected with the hook section.
Through adopting above-mentioned technical scheme, be located the frame muscle of roof beam body lower part and stretch into the linkage segment and be connected with the crotch section of first atress muscle, the frame muscle that is connected and first atress muscle can be in the linkage segment back of concreting, the wholeness of reinforcing component.
The present invention may be further configured in a preferred embodiment as: and both ends of the third stress bar in the full length direction are provided with bending sections facing the structural beam.
Through adopting above-mentioned technical scheme, the bending segment that third atress muscle set up can be at the joint strength of reinforced concrete and third atress muscle to improve third atress muscle.
To sum up, the utility model discloses a following at least one useful technological effect:
the cantilever section of the beam body is formed by factory prefabrication, a support frame used for supporting the cantilever section is erected below the cantilever section in advance before the beam body is installed, and the connecting section is formed by pouring concrete after the connection of reinforcing steel bars in the beam body and reinforcing steel bars in a structural beam on site is completed. The first stress rib extending into the connecting section is connected with the third stress rib through the horizontal section of the hook section, the third stress rib bears the tensile force transmitted by the first stress rib, the tensile force is transmitted to the connecting rib connected with the second stress rib in the structural beam, and the tensile force borne by the upper portion of the beam body is transmitted to the structural beam. The diameter of the connecting rib is larger than or equal to that of the first stress rib. When the height of the cantilever beam is greater than that of the structural beam, the force in the cantilever beam is transmitted to the second stress rib in the structural beam through the matching of the hook section, the third stress rib and the connecting rib, so that the cantilever beam higher than the structural beam can be connected to the structural beam;
the lower surface of the cantilever section is obliquely arranged, the upper surface of the cantilever section is horizontally arranged, the beam body is of a variable-section beam structure, and the section of the beam body is gradually reduced from the connecting position of the connecting section and the cantilever section to the end, far away from the connecting section, of the cantilever section, so that the self weight of the cantilever section is reduced, the tensile force borne and transmitted by the upper part of the structure is reduced, and the safety and the stability of the structure are improved;
the frame vertical rib positioned at the lower part of the beam body stretches into the connecting section and is connected with the hook section of the first stress rib, and the connected frame vertical rib and the first stress rib can be cast with concrete in the connecting section to enhance the integrity of the member.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is a schematic structural diagram of the first stress rib of the present invention.
Reference numerals: 1. a beam body; 2. a cantilever section; 3. a connecting section; 4. a first stress rib; 5. erecting ribs; 6. a structural beam; 7. a second stress rib; 8. a third stress rib; 9. connecting ribs; 10. a hook section; 11. a vertical section; 12. a horizontal segment; 13. an anchoring section; 14. a frame rib; 15. and (6) bending the section.
Detailed Description
As shown in fig. 1, the cantilever beam comprises a beam body 1, wherein the beam body 1 comprises a cantilever section 2 and a connecting section 3 which are connected. The overhanging section 2 is prefabricated and formed for a factory. The connecting section 3 is connected to an existing structural beam 6, and concrete is poured after the connecting section 3 is connected to the structural beam 6. The upper surface of the beam body 1 is higher than the upper surface of the structural beam 6.
As shown in fig. 1 and 2, the structural beam 6 is perpendicular to the beam body 1, at least two second stress bars 7 are arranged on the lower portion of the structural beam 6 along the direction of the beam length, and seven stress bars 9 are arranged on the structural beam 6 corresponding to the connecting sections 3. The splice bar 9 buries underground in advance for 6 construction of structural beam, and the splice bar 9 sets up and distributes along 1 width direction of roof beam body, and the splice bar 9 can be for the rectangular frame who buckles and form with the 7 unanimous reinforcing bars of diameter of second atress muscle to be the vertical setting of stirrup pattern. Meanwhile, the two ends of the connecting rib 9 are overlapped in a staggered mode to form an overlap joint, the second stress rib 7 is clamped and fixed through welding through the overlap joint, and the welding position of the connecting rib 9 is located inside the structural beam 6. The upper part of the tie bar 9 extends above the upper part of the structural beam 6 and the upper part of the tie bar 9 extends above the upper surface of the structural beam 6 with a gap to the upper surface of the structural beam 6. And a third stress rib 8 is arranged in a gap between the connecting rib 9 and the structural beam 6.
The third stress bar 8 is connected on one side of the upper part of the connecting bar 9 close to the structural beam 6, the third stress bar 8 is axially parallel to the whole length direction of the structural beam 6, and the third stress bar 8 is at least provided with two angular positions along the width direction of the structural beam 6 and is respectively positioned at the upper part of the connecting bar 9. The 8 axial both ends of third atress muscle are all buckled and are formed with buckling section 15, and 15 perpendicular third atress muscle 8 of buckling section set up towards structural beam 6, and buckling section 15 can strengthen the joint strength of concrete and third atress muscle 8 in the linkage segment 3 to improve the steadiness of third atress muscle 8.
As shown in fig. 1 and 3, four first stress ribs 4 are distributed on the upper part of the beam body 1 along the width direction of the beam body 1, and at least two erection ribs 5 are arranged on the lower part of the beam body 1. The axial ends of the first stress rib 4 and the frame vertical rib 5 extend into the connecting section 3 from the overhanging section 2. The first stress rib 4 stretches into one end of the connecting section 3 and forms a hook section 10 through bending, the hook section 10 is formed after the first stress rib 4 is bent twice, and the hook section 10 comprises a vertical section 11 and a horizontal section 12, wherein the vertical section 11 is arranged on the upper portion of the beam body 1 downwards, and the horizontal section is perpendicular to the vertical section 11.
The axial direction of the horizontal segment 12 is parallel to the width direction of the structural beam 6, and the horizontal segment 12 is positioned between the third stress rib 8 and the upper surface of the structural beam 6 and is fixedly connected with the passing third stress rib 8. One end of the horizontal section 12, which is far away from the vertical section 11, is bent to form an anchoring section 13, and the anchoring section 13 is perpendicular to the horizontal section 12 and is arranged far away from the structural beam 6.
The lower surface of the cantilever section 2 is arranged from the connecting section 3 to the other end in an upward inclined manner, so that the cantilever section 2 is of a variable-section beam structure, the sectional area is gradually reduced from the connecting section 3 to the other end, and the load of the first stress rib 4 on the upper portion of the beam body 1 is reduced.
The frame vertical rib 5 is positioned at the lower part of the beam body 1, and the part of the frame vertical rib 5 positioned in the overhanging section 2 is arranged in a way of inclining upwards from the connecting section 3 to the other end. The erection ribs 5 extend into the width direction of the beam 6 with the parallel structure at one end of the connecting section 3, and the erection ribs 5 are positioned on the upper end surface of the connecting section 3 and are parallel and level with the upper end surface of the horizontal section 12. The vertical ribs 5 are fixedly connected with the third stress ribs 8 and the horizontal section 12.
The implementation principle of the embodiment is as follows: after the support frame at the lower part of the beam body 1 is erected, the beam body 1 is hoisted, and the construction steps of the cantilever beam structure comprise the following steps: the connecting section 3 of the beam body 1 covers the upper parts of the six connecting ribs 9, so that the upper end surface of the horizontal section 12 is lower than one side of the upper parts of the connecting ribs 9, which faces the structural beam 6.
Step two: insert third atress muscle 8 between horizontal segment 12 and splice bar 9 upper portion to adopt welding mode, with third atress muscle 8 respectively with horizontal segment 12 and the splice bar 9 fixed connection that passes through.
Step three: concrete in the connecting section 3 is poured so that the overhanging section 2 and the connecting section 3 are formed integrally. After the support frame is dismantled, the beam body 1 and the structural beam 6 form an overhanging structure.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a cantilever beam, includes the roof beam body (1), connects in current structure roof beam (6) upper portion, and roof beam body (1) upper portion is provided with first atress muscle (4), and roof beam body (1) lower part is provided with erects muscle (5), and structure roof beam (6) lower part is provided with second atress muscle (7), its characterized in that along the roof beam full length direction: the structure beam (6) is vertically provided with connecting ribs (9) corresponding to the beam body (1), the connecting ribs (9) are distributed with a plurality of ribs along the through length direction of the beam, the connecting ribs (9) are arranged in a rectangular frame mode, the connecting ribs (9) are connected with second stress ribs (7), the upper portions of the connecting ribs (9) extend out of the structure beam (6) and have gaps with the structure beam (6), one side, facing the structure beam (6), of the upper portions of the connecting ribs (9) is provided with a plurality of third stress ribs (8), the third stress ribs (8) are uniformly distributed along the width direction of the structure beam (6), and the through length direction of the third stress ribs (8) is arranged along the through length direction of the structure beam (6); the utility model discloses a construction beam, including cantilever section (2) and linkage segment (3), the roof beam body (1) linkage segment (3) is connected on structural beam (6), first atress muscle (4) one end is stretched out cantilever section (2) and is located linkage segment (3), and first atress muscle (4) that are located linkage segment (3) are provided with hook section (10), hook section (10) are L shape, hook section (10) are including erecting section (11) and horizontal segment (12), erect vertical setting of section (11) and bottom are connected with horizontal segment (12), horizontal segment (12) set up along structural beam (6) width direction, horizontal segment (12) are connected with third atress muscle (8) of process.
2. A cantilever beam according to claim 1, wherein: the horizontal section (12) is connected to the lower end face of the third stress rib (8).
3. A cantilever beam according to claim 2, wherein: one end of the horizontal section (12) is connected with the vertical section (11), the other end of the horizontal section is far away from the vertical section (11), and one end of the horizontal section (12) far away from the vertical section (11) is connected with a vertical anchoring section (13).
4. A cantilever beam according to claim 3, wherein: the joint position of the connecting rib (9) is positioned inside the structural beam (6).
5. The cantilever beam according to claim 4, wherein: the lower surface of the overhanging section (2) is arranged from the connecting section (3) to the other end in an upward inclined mode, and the frame vertical ribs (5) are matched with the overhanging section (2) in an inclined mode.
6. The cantilever beam according to claim 5, wherein: the one end of putting up stud (5) logical length direction stretches out the butt section and keeps away from the side of slope section, the one end that puts up stud (5) and stretch out the butt section is connected with crotch section (10).
7. The cantilever beam according to claim 6, wherein: and both ends of the third stress rib (8) in the length direction are provided with bending sections (15) facing the structural beam (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020429129.5U CN211873312U (en) | 2020-03-28 | 2020-03-28 | Cantilever beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020429129.5U CN211873312U (en) | 2020-03-28 | 2020-03-28 | Cantilever beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211873312U true CN211873312U (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020429129.5U Active CN211873312U (en) | 2020-03-28 | 2020-03-28 | Cantilever beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211873312U (en) |
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2020
- 2020-03-28 CN CN202020429129.5U patent/CN211873312U/en active Active
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