CN218091301U - Adjustable prestress self-resetting engineering bamboo beam column node - Google Patents
Adjustable prestress self-resetting engineering bamboo beam column node Download PDFInfo
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- CN218091301U CN218091301U CN202221908145.8U CN202221908145U CN218091301U CN 218091301 U CN218091301 U CN 218091301U CN 202221908145 U CN202221908145 U CN 202221908145U CN 218091301 U CN218091301 U CN 218091301U
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Abstract
The utility model relates to an adjustable prestress self-resetting engineering bamboo beam column node, which comprises an engineering bamboo column, an engineering bamboo beam and a self-resetting system; in virtual X, Y, Z space: the engineering bamboo columns are positioned on the upper side and the lower side of the node and are respectively provided with a through X-direction through hole along the X direction, and a plastic sleeve is arranged in the X-direction through hole; a through Z-direction through hole is formed in the engineering bamboo beam beside the node along the Z direction, and a plastic sleeve is also arranged in the Z-direction through hole; the self-resetting system comprises a prestressed steel strand and a prestressed force applying device; the prestressed steel strand sequentially penetrates through the X-direction through hole at the upper part, the Z-direction through hole and the X-direction through hole at the lower part, and two ends of the prestressed steel strand are anchored with the engineering bamboo column through the anchoring device; and if the prestress wire is provided with a stress monitoring loss monitoring device, the control center immediately receives prestress monitoring feedback and adjusts prestress applied by the prestress applying device.
Description
Technical Field
The utility model relates to an adjustable prestressing force is from restoring to throne engineering bamboo beam column node belongs to civil engineering technical field.
Background
In recent years, as manufacturing and processing techniques have been improved, engineered bamboo structures represented by glued bamboos and reconstituted bamboos have been increasingly used in the construction field.
The beam column bolt-steel filler plate node is a beam column member connection form commonly used in engineering bamboo structures. The node has the advantages of low carbon, environmental protection, beautiful appearance, easy construction and the like, thereby being widely concerned.
However, the cross grain tensile strength of the engineering bamboo material is low, which causes brittle fracture of the node under the action of bending moment and generates more remarkable unrecoverable deformation. Therefore, technical measures are necessary to improve the bending resistance and the self-resetting performance of the node.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an adjustable prestressing force is from restoring to throne engineering bamboo beam column node, through prestressing force exert promote node from restoring to throne performance, initial rigidity and bending resistance bearing capacity. The loss of prestress during tensioning and use is obviously reduced by arranging the steering device. The prestress adjustable function is realized through the linkage of the prestress loss monitoring device and the jack.
The utility model adopts the following technical proposal:
an adjustable prestress self-resetting engineering bamboo beam column node comprises an engineering bamboo column 1, an engineering bamboo beam 4 and a self-resetting system; in virtual X, Y, Z space: the engineering bamboo column 1 is positioned on the upper side and the lower side of the node and is respectively provided with a through X-direction through hole along the X direction, and a plastic sleeve 10 is arranged in the X-direction through hole; a through Z-direction through hole is formed beside the joint on the engineering bamboo beam 4 along the Z direction, and a plastic sleeve 10 is also arranged in the Z-direction through hole; the self-resetting system comprises a prestressed steel strand 5 and a prestress applying device 8; the prestressed steel strand 5 sequentially penetrates through the X-direction through hole at the upper part, the Z-direction through hole and the X-direction through hole at the lower part, and two ends of the prestressed steel strand are anchored with the engineering bamboo column 1 through an anchoring device 7; and if the prestress wire 5 is provided with a stress monitoring loss monitoring device 9, the control center immediately receives prestress monitoring feedback and adjusts prestress applied by a prestress applying device 8.
Preferably, the device further comprises a steering device 6, wherein the steering device 6 is fixed on the engineering bamboo column 1 and the engineering bamboo beam 4 and guides the trend of the prestressed steel strand 5.
Preferably, a groove is formed in the surface of the joint of the engineering bamboo column 1 and the engineering bamboo beam 4 along the Y direction, an embedded filling plate 3 is placed in the groove, and a group of bolts 2 penetrate through screw holes in the embedded filling plate 3 along the Y direction and extend into the engineering bamboo column 1 or the engineering bamboo beam 4.
Further, the steering device 6 is a fixed pulley.
Furthermore, the thickness of the groove is 1mm larger than that of the embedded steel plate 3, and the diameter of the screw hole is 1mm larger than that of the bolt 2.
Preferably, the plastic sleeve 10 is fixed with the X-direction through hole and the Y-direction through hole through structural glue.
Preferably, the sectional dimension and the number of the prestressed steel strands 5 are positively correlated with the sectional dimension and the bending resistance bearing capacity of the node.
Preferably, the number of the steering devices 6 is 4, and the steering devices are symmetrically arranged on the upper side and the lower side of the node.
Preferably, the prestressing device 8 is a jack.
Preferably, the two ends of the prestressed steel strand are respectively tensioned, and the tensioning control stress is 0.5 time of the nominal yield strength of the prestressed steel strand.
The beneficial effects of the utility model reside in that:
1) The self-resetting performance, the initial rigidity and the bending resistance bearing capacity of the engineering bamboo beam-column joint are improved by applying prestress.
2) The loss of prestress during tensioning and use is obviously reduced by arranging the steering device.
3) The adjustable function of prestressing force is realized through the linkage of prestressing force loss monitoring devices and jack.
4) The structure is simple, the construction is convenient, the reliability and the durability of the engineering bamboo beam column joint are greatly improved, and the engineering bamboo component is convenient to popularize.
Drawings
Fig. 1 is the utility model discloses adjustable prestressing force is from the structural schematic diagram of restoration engineering bamboo beam column node.
The direction perpendicular to the paper surface is the Y direction, and the Y direction is not shown in the drawing because fig. 1 is a plan view.
In the figure, 1, an engineering bamboo column, 2, a bolt, 3, an embedded steel plate, 4, an engineering bamboo beam, 5, a prestress steel strand, 6, a steering device, 7, an anchoring device, 8, a prestress applying device, 9, a prestress loss monitoring device and 10 are plastic sleeves.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the adjustable prestress self-resetting engineering bamboo beam column node comprises an engineering bamboo column 1, a bolt 2, an embedded steel filler plate 3, an engineering bamboo beam 4, a prestress steel strand 5, a steering device 6, an anchoring device 7, a jack 8, a prestress loss monitoring device 9 and a plastic sleeve 10.
Referring to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: grooving the engineering bamboo column 1 and the engineering bamboo beam 4 and drilling in the direction (Y direction) perpendicular to the paper surface, wherein the thickness of the groove is 1mm larger than that of the embedded steel filling plate, and the diameter of the screw hole is 1mm larger than that of the bolt.
Referring to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: and (3) placing the embedded steel filling plate 3 into the engineering bamboo column and the engineering bamboo beam groove, and then connecting the through bolts.
Referring to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: drilling holes in the engineering bamboo column 1 and the engineering bamboo beam 4 in a direction (X direction) parallel to the paper surface, penetrating plastic sleeves 10 into the holes, and reinforcing the bonding firmness of the plastic sleeves 10 and the engineering bamboo members through structural adhesive.
Referring to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: the sectional dimension and the number of the prestressed steel strands 5 can be comprehensively determined according to the sectional dimension and the bending resistance bearing capacity of the node.
With continued reference to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: and arranging corresponding steering devices 6 near the plastic sleeve 10, penetrating the prestressed steel strands 5 into the upper part of the engineering bamboo column 1I, penetrating the prestressed steel strands into the engineering bamboo beam 4 after passing through the two steering devices 6, and penetrating the prestressed steel strands into the lower part of the engineering bamboo column 1 after passing through the two steering devices 6.
With continued reference to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: jacks 8 and anchoring devices 7 are respectively arranged at two ends of the prestressed steel strand, and a prestressed loss monitoring device 9 is arranged in the middle of the prestressed steel strand 5.
With continued reference to fig. 1, when the adjustable prestress self-resetting engineering bamboo beam column joint is manufactured: and respectively tensioning two ends of the prestressed steel strand, wherein the tensioning control stress is preferably 0.5 time of the nominal yield strength of the prestressed steel strand.
When the prestress is lost, the prestress can be restored to the original level through the jack 8.
The following is a specific example:
as shown in fig. 1, an adjustable prestress self-resetting engineering bamboo beam-column node comprises an engineering bamboo column 1, a bolt 2, an embedded steel filler plate 3, an engineering bamboo beam 4, a prestress steel strand 5, a steering device 6, an anchoring device 7, a jack 8, a prestress loss monitoring device 9 and a plastic sleeve 10.
Wherein, the cross-sectional dimensions of the engineering bamboo column 1 and the engineering bamboo beam 4 are 305mm multiplied by 305mm and 130mm multiplied by 305mm respectively. The cross-sectional dimension of the embedded steel filler plate 3 is 305mm × 610mm, and the thickness is 10mm. The diameter of the bolt 2 is 20mm, and the pitch, the edge distance and the end distance are 190mm, 70mm and 140mm respectively. The prestressed steel strands 5 are 1860-grade steel strands (the diameter is 15.2 mm), the number is 1, and the included angle between the steel strands between the two steering devices 6 and the engineering bamboo beam is 45 degrees. And (3) slotting the engineering bamboo columns 1 and the engineering bamboo beams 4 and drilling holes in the direction vertical to the paper surface, wherein the thickness of the slot is 1mm larger than that of the embedded steel filling plate 3, and the diameter of a screw hole is 1mm larger than that of the bolt 2. And (3) placing the embedded steel filling plate 3 into the grooves of the engineering bamboo column 1 and the engineering bamboo beam 4, and then connecting the through bolts. Drilling is carried out on the engineering bamboo column 1 and the engineering bamboo beam 4 in the direction parallel to the paper surface, a plastic sleeve 10 penetrates into the hole, and the firmness of bonding between the plastic sleeve and the engineering bamboo component is enhanced through epoxy resin. And arranging a corresponding steering device 6 near the plastic sleeve 10, penetrating the prestressed steel strand 5 into the upper part of the engineering bamboo column 1, penetrating the prestressed steel strand into the engineering bamboo beam 4 after passing through the two steering devices 6, and penetrating into the lower part of the engineering bamboo column 4 after passing through the two steering devices 6. Jacks 8 and anchoring devices 7 are respectively arranged at two ends of the prestressed steel strands 5, and a prestressed loss monitoring device 9 is arranged in the middle of the prestressed steel strands 5. And respectively tensioning two ends of the prestressed steel strand, wherein the tension control stress is 930MPa. When the prestress damage exceeds 30% of the tension control stress, the jack 8 is adopted to restore the prestress to the original level.
The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and these changes or improvements should fall within the scope of the present invention.
Claims (10)
1. The utility model provides an adjustable prestressing force is from restoring to throne engineering bamboo beam column node which characterized in that:
comprises an engineering bamboo column (1), an engineering bamboo beam (4) and a self-resetting system;
in virtual X, Y, Z space: the engineering bamboo column (1) is positioned on the upper side and the lower side of the node and is respectively provided with a through X-direction through hole along the X direction, and a plastic sleeve (10) is arranged in the X-direction through hole; a through Z-direction through hole is formed beside the joint on the engineering bamboo beam (4) along the Z direction, and a plastic sleeve (10) is also arranged in the Z-direction through hole;
the self-resetting system comprises prestressed steel strands (5) and a prestress applying device (8); the prestressed steel strand (5) sequentially penetrates through the X-direction through hole at the upper part, the Z-direction through hole and the X-direction through hole at the lower part, and two ends of the prestressed steel strand are anchored with the engineering bamboo column (1) through an anchoring device (7);
and the prestress steel strand (5) is provided with a plurality of prestress monitoring loss monitoring devices (9), and the control center immediately receives prestress monitoring feedback and adjusts prestress applied by the prestress applying device (8).
2. The adjustable prestressed self-resetting engineering bamboo beam-column joint of claim 1, wherein: the engineering bamboo column and beam combined steering device is characterized by further comprising a steering device (6), wherein the steering device (6) is fixed on the engineering bamboo column (1) and the engineering bamboo beam (4) and guides the trend of the prestressed steel strands (5).
3. The adjustable prestressed self-restoring engineered bamboo beam column joint of claim 1, wherein: a groove is formed in the surface of the joint of the engineering bamboo column (1) and the engineering bamboo beam (4) along the Y direction, an embedded filling plate (3) is arranged in the groove, and a group of bolts (2) penetrate through screw holes in the embedded filling plate (3) along the Y direction and extend into the engineering bamboo column (1) or the engineering bamboo beam (4).
4. The adjustable prestressed self-resetting engineering bamboo beam-column joint of claim 2, wherein: the steering device (6) is a fixed pulley.
5. The adjustable prestressed self-resetting engineering bamboo beam-column joint of claim 3, wherein: the thickness of the groove is 1mm larger than that of the embedded filling plate (3), and the diameter of the screw hole is 1mm larger than that of the bolt (2).
6. The adjustable prestressed self-resetting engineering bamboo beam-column joint of claim 1, wherein: the plastic sleeve (10) is fixed with the X-direction through hole and the Y-direction through hole through structural glue.
7. The adjustable prestressed self-restoring engineered bamboo beam column joint of claim 1, wherein: the sectional dimension and the number of the prestressed steel strands (5) are positively correlated with the sectional dimension and the bending resistance bearing capacity of the node.
8. The adjustable prestressed self-resetting engineering bamboo beam-column joint of claim 2, wherein: the number of the steering devices (6) is 4, and the steering devices are symmetrically arranged on the upper side and the lower side of the node.
9. The adjustable prestressed self-resetting engineering bamboo beam-column joint of claim 1, wherein: the prestress applying device (8) is a jack.
10. The adjustable prestressed self-restoring engineered bamboo beam column joint of claim 1, wherein: and respectively tensioning the two ends of the prestressed steel strand, wherein the tensioning control stress is 0.5 time of the nominal yield strength of the prestressed steel strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221908145.8U CN218091301U (en) | 2022-07-22 | 2022-07-22 | Adjustable prestress self-resetting engineering bamboo beam column node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221908145.8U CN218091301U (en) | 2022-07-22 | 2022-07-22 | Adjustable prestress self-resetting engineering bamboo beam column node |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218091301U true CN218091301U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221908145.8U Active CN218091301U (en) | 2022-07-22 | 2022-07-22 | Adjustable prestress self-resetting engineering bamboo beam column node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218091301U (en) |
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2022
- 2022-07-22 CN CN202221908145.8U patent/CN218091301U/en active Active
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