CN212715442U - Novel four-sleeve buckling restrained brace - Google Patents
Novel four-sleeve buckling restrained brace Download PDFInfo
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- CN212715442U CN212715442U CN202021268693.XU CN202021268693U CN212715442U CN 212715442 U CN212715442 U CN 212715442U CN 202021268693 U CN202021268693 U CN 202021268693U CN 212715442 U CN212715442 U CN 212715442U
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Abstract
A novel four-sleeve buckling restrained brace comprises an inner restrained steel pipe, wherein an energy dissipation core pipe is sleeved on the outer side of the inner restrained steel pipe, an outer restrained steel pipe is sleeved on the outer side of the energy dissipation core pipe, the energy dissipation core pipe and the inner restrained pipe are connected with a first power transmission plate, the first power transmission plate is fixedly connected with a first connecting piece, the energy dissipation core pipe is fixedly connected with the inner side of the outer restrained pipe, and the outer side of the outer restrained pipe is fixedly connected with an outer force transmission steel pipe; the outer side of the first force transfer plate is tightly attached to the inner side of the first sliding plate, the edges of the first force transfer plate and the first sliding plate are tightly attached to the outer constraint steel pipe, the outer constraint pipe, the energy dissipation core material pipe and the inner constraint steel pipe are tightly attached to the inner side of the second sliding plate, a prestress material is arranged between the second sliding plate and the first sliding plate, the prestress material penetrates through the first sliding plate and the second sliding plate respectively and is anchored with a first group of anchors and a second group of anchors, the inner side of the second force transfer plate is fixedly connected with the outer sleeve force transfer steel pipe, and the outer side of the second force transfer plate is fixedly. The utility model discloses reliable reasonable, the practicality is strong.
Description
Technical Field
The utility model relates to a civil engineering technical field, in particular to novel four sleeve bucking restraint are supported.
Background
In recent years, a plurality of violent earthquakes continuously occur worldwide, which all cause serious damage to a large number of building structures. In order to reduce the dynamic response of a building structure under the action of an earthquake and improve the earthquake-resistant performance of the structure, students all over the world propose different structural vibration control methods. The method can be divided into active control, passive control, intelligent control and semi-automatic control according to the nature, wherein the passive control method is a method for weakening the seismic response by consuming seismic energy through energy consumption components of the structure, and the buckling restrained brace is one of the passive control methods. Although the traditional buckling restrained brace can consume earthquake energy, the traditional buckling restrained brace generates larger residual deformation under the action of larger load and needs to be repaired or replaced after the earthquake. In this case, even the structure is largely deformed, and the repair cost is high or the structure cannot be used after the repair.
To it not enough, the utility model provides a novel four sleeve pipe bucking restraint are supported can not only provide anti lateral stiffness with a traditional bucking restraint support appearance body, consume seismic energy, can make bucking restraint support itself reduce or eliminate residual deformation after the shake moreover to make the structure can reduce or even eliminate residual deformation after the shake, with the recoverability that realizes the structure.
Disclosure of Invention
In order to overcome the problem that there are residual deformation and the uncertain shortcoming of position of surrender destruction and ordinary "one" style of calligraphy and "ten" font support isoplanar unstability after traditional bucking restraint support shakes, the utility model aims to provide a novel four sleeve pipe bucking restraint is supported, realizes that the fixed point is surrendered and can eliminate its residual deformation after shaking, and then realizes making the recoverability of structure, reduces the restoration expense of shaking back structure, and this structure is reliable reasonable, and the practicality is stronger.
In order to realize the purpose, the utility model discloses a technical scheme is:
a novel four-sleeve buckling restrained brace comprises an inner restrained steel tube 3, wherein an energy consumption core tube 2 is sleeved outside the inner restrained steel tube 3, an outer restrained tube 1 is sleeved outside the energy consumption core tube 2, the same ends of the energy consumption core tube 2 and the inner restrained tube 3 are fixedly connected to the same side of a first force transmission plate 7, the other side of the first force transmission plate 7 is fixedly connected with a first connecting piece 13, the other end of the energy consumption core tube 2 is fixedly connected with the inner side of the outer restrained tube 1, and meanwhile, the outer side of the outer restrained tube 1 is fixedly connected with an outer force transmission steel tube 4; the outer side of the first force transmission plate 7 is tightly attached to the inner side of the first sliding plate 9, the inner side of the first sliding plate 9 is tightly attached to the first force transmission plate 7 and the outer constraint pipe 1 at the edge of the same end, the other ends of the outer constraint pipe 1, the energy dissipation core pipe 2 and the inner constraint steel pipe 3 are tightly attached to the inner side of the second sliding plate 10, a prestressed material 6 is arranged between the second sliding plate 10 and the first sliding plate 9, the prestressed material 6 penetrates through the first sliding plate 9 and is anchored through a first group of anchors 11, the prestressed material 6 penetrates through the second sliding plate 10 and is anchored through a second group of anchors 12, the outer jacket force transmission steel pipe 4 is fixedly connected with the inner side of the second force transmission plate 8, and the outer side of the outer jacket force transmission steel pipe is fixedly connected with a second group of.
The energy dissipation core material pipe 2 is made of low-yield-point steel and is provided with a middle yield energy dissipation section, a transition section and two non-yield force transmission sections at two ends.
The middle yield energy consumption section of the energy consumption core material pipe 2 is subjected to holing weakening treatment, and the holing weakening is divided into multiple forms such as single-row long holes, double-row short holes and multiple rows of small holes.
The two ends of the opening of the middle yielding energy consumption section of the energy consumption core material pipe 2 are circular or oval to form a transition section.
The outer constraint pipe 1, the inner constraint steel pipe 3, the outer sleeve force transmission steel pipe 4, the first force transmission plate 7, the second force transmission plate 8, the first sliding plate 9 and the second sliding plate 10 are all made of high-strength steel.
Gaps among the outer constraint pipe 1, the energy dissipation core material pipe 2 and the inner constraint steel pipe 3 are filled with unbonded filling materials 5, and the unbonded filling materials 5 are rubber.
The prestressed material 6 is an unbonded low-relaxation prestressed strand, the prestressed material 6 penetrates through the inner constraint steel pipe 3, the first force transmission plate 7, the first sliding plate 9 and the second sliding plate 10, two ends of the prestressed material 6 are respectively anchored on the outer sides of the first sliding plate 9 and the second sliding plate 10 by a first group of anchors 11 and a second group of anchors 12, the prestressed material 6 always has prestress, and the pre-initial force of the prestressed material 6 is greater than the bending load of the middle yield energy consumption section of the energy consumption core material pipe 2.
Round holes are punched on the first force transmission plate 7, the first sliding plate 9 and the second sliding plate 10, so that the prestressed steel strands can pass through the round holes.
The first set of anchorage devices 11 are extrusion anchorage devices, and the second set of anchorage devices 12 are clip type anchorage devices.
The middle of the first sliding plate 9 is provided with a cross groove, the protruded right-angle part is chamfered, and the first connecting piece 13 and the second connecting piece 14 are both cross-shaped connecting pieces formed by welding high-strength steel plates.
A certain gap is left between the peripheral edge of the second sliding plate 10 and the inner side of the outer force transmission steel pipe 4.
The contact surfaces of the first connecting piece 13 and the first sliding plate 9, and the contact surfaces of the outer sleeve force transmission steel pipe 4 and the second sliding plate 10 are coated with lubricating oil.
The utility model has the advantages that:
the utility model discloses a four sheathed tube construction modes have better symmetry and great plane external rigidity, can guarantee that it has better overall stability. In addition, the energy-consuming core material pipe is weakened, so that the yield and the damage of a fixed point can be realized, and the rubber filling materials between the outer constraint pipe and the energy-consuming core material as well as between the outer constraint pipe and the inner constraint steel pipe can prevent the buckling of the energy-consuming core material and can form a second energy-consuming mechanism when extrusion is carried out. Relative motion through the sliding plate under the effect of external load drives its prestressing force of steel strand wires extension increase, and when external load disappeared, prestressing force material's prestressing force can reduce or eliminate the residual deformation of power consumption inner core to reduce or eliminate the residual deformation of structure, and realize the restorability of structure, the utility model discloses simple structure has good shock attenuation power consumption performance.
Drawings
Fig. 1 is a schematic view of the energy dissipation core tube of the present invention.
Fig. 2 is a schematic view of the present invention in partial assembly.
Fig. 3 is the post-tensioning prestress schematic diagram of the present invention.
Fig. 4 is the self-resetting buckling restrained brace of the present invention.
Fig. 5 is a perspective view of the self-resetting buckling restrained brace of the present invention.
Fig. 6 is a cross-sectional view of fig. 5A-a according to the present invention.
Fig. 7 is a cross-sectional view of fig. 5B-B according to the present invention.
Fig. 8 is a cross-sectional view of fig. 5C-C according to the present invention.
Fig. 9 is a cross-sectional view of fig. 5D-D according to the present invention.
Fig. 10 is a longitudinal sectional view of fig. 9 taken along line 1-1 according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-10, the utility model relates to a novel four sleeve pipes are from restoring to throne bucking restraint and are supported, including restraint steel pipe, power consumption core pipe, overcoat biography power steel pipe, unbonded filler material, prestressed material, biography power board, sliding plate, ground tackle, connecting piece.
The energy-consuming core material tube 2 is subjected to hole opening treatment, and is divided into a non-buckling power transmission section, a transition section and an energy-consuming buckling section, as shown in fig. 1. The utility model discloses an one end will consume energy core pipe 2 and internal restraint steel pipe 3 along the axle center overlap and weld on one side of first lamina tecti 7 mutually, the opposite side of first lamina tecti 7 welds as shown in figure 2 with first connecting piece 13 center relatively. The utility model discloses a another end, with power consumption core pipe 2, outer about pipe 1 and overcoat power transmission steel pipe 4 along same axle center weld, just form the utility model discloses a novel four sleeve pipes are from the rudiment of bucking restraint support that restores to the throne, as shown in fig. 3. At this time, the first sliding plate 9 is sleeved on the first connecting piece 13 through the cross hole, and the gap among the outer constraint pipe 1, the energy dissipation core material pipe 2 and the inner constraint steel pipe 3 is filled with the unbonded filling material 5. The prestressed steel strand 6 of the extruded anchorage device 11 passes through the circular holes reserved in the first sliding plate 9, the first force transmission plate 7 and the second sliding plate 10 in sequence in advance, so that the inner side of the first sliding plate 9 is tightly attached to the outer side of the first force transmission plate 7 and one end of the outer restraint pipe 1, and the second sliding plate 10 is arranged on the inner side of the outer sleeve force transmission steel pipe 4, so that the inner side of the second sliding plate 10 is tightly attached to the same end of the outer restraint pipe 1, the energy consumption core material pipe 2 and the inner restraint pipe 3. At this time, the clip-type anchorage 12 is passed through one end of the non-extrusion anchorage 11 to apply a predetermined prestress to the prestress steel strand 6, and the prestress steel strand 6 is fixed to the second sliding plate by the clip-type anchorage 12, as shown in fig. 3. And finally, aligning and welding the second force transmission plate 8 welded with the second group of connecting pieces 14 and fixing the second force transmission plate at the end part of the outer sleeve force transmission steel pipe 4. At this point, the test piece assembly is complete, as shown in FIG. 4.
The energy-consuming core material tube 2 is weakened, and the yield and the damage at fixed points can be realized. Secondly, the rubber filling material 5 between the outer restraining tube 1 and the energy dissipating core tube 2 and the inner restraining steel tube 3 not only can prevent buckling of the energy dissipating core 2, but also when extrusion occurs, the rubber filling material 5 can form a second energy dissipating mechanism. Moreover, the outer constraint pipe 1, the energy dissipation core material pipe 2 and the inner constraint steel pipe 3 are all round steel pipes, have good symmetry and large out-of-plane rigidity, and have better overall stability performance under the same cross-sectional area. The utility model provides a prestressed material 6 is steel strand wires, not only can provide sufficient restoring force, but also has relatively better ductility, can protect the power consumption of warping of power consumption core pipe 2. The convex part of the cross opening of the first sliding plate 9 is chamfered, and lubricating oil is coated on the contact surface between the inner side of the cross opening of the first sliding plate 9 and the first connecting piece 13, so that the friction force generated during relative movement is reduced. At the same time, the inner side of the force-transmitting steel jacket tube 4 and the outer edge of the second sliding plate 10 are also coated with lubricating oil, which also reduces the friction force generated during the relative movement. Under the earthquake action, the utility model discloses a relative motion of first sliding plate 9, first sliding plate 10 drives prestressing force material 6 extension increase its prestressing force. After the earthquake, prestressing force of prestressing force material can reduce or eliminate the residual deformation of power consumption core pipe 2 to reduce or eliminate the residual deformation of structure, and realize the restorability of structure, the utility model discloses simple structure has good shock attenuation power consumption performance.
The utility model discloses a theory of operation:
in the tension state of the utility model, one end of the tension transmission device transmits force to the first force transmission plate 7 through the first connecting piece 13, on one hand, the first force transmission plate 7 pulls the core material to elongate and deform to consume energy, and on the other hand, the first sliding plate 9 is driven to further increase the prestress of the prestress material 6 along with the tension of the core material; the other end of the steel wire is connected with a second force transmission plate 8 through a second group of connecting pieces 14, the second force transmission plate 8 drives the outer sleeve force transmission steel pipe 4 to further drive the second sliding plate 10 to move, so that the core material is stretched and deformed to consume energy, the prestress of the prestress steel strands is increased, and when the tensile force is unloaded, the prestress of the prestress material 6 eliminates the residual strain of the energy consumption core material pipe caused by energy consumption through the prestress of the prestress material, so that the structure can be restored.
Under a compressed state, one end of the prestressed material 6 is connected with the first force transmission plate 7 through the first connecting piece 13, on one hand, the core material is driven to be compressed and deformed to consume energy, and on the other hand, the inner constraint steel pipe is driven to transmit force to the second sliding plate 10, so that the prestressed material 6 is driven to extend to increase the prestress; the other end of the connecting piece transmits force to the second force transmission plate 8 through the second group of connecting pieces 14, the second force transmission plate 8 drives the outer sleeve force transmission steel pipe to further drive the outer restraint pipe to move, so that the first sliding plate 9 is pushed to slide, the first sliding plate 9 drives the prestressed material 6 to extend to increase the prestress of the prestressed material 6, and similarly, when the pressure is unloaded, the prestress of the prestressed material 6 eliminates the residual strain of the energy consumption core material pipe caused by energy consumption through the prestress of the prestressed material 6, so that the structure can be restored.
Furthermore, the utility model discloses an energy consumption core pipe has weakened the processing, can realize the yield and the destruction of fixed point. Secondly, the rubber filling materials between the outer constraint pipe and the energy dissipation core material as well as between the outer constraint pipe and the inner constraint steel pipe can not only prevent the buckling of the energy dissipation core material, but also form a second energy dissipation mechanism when extrusion is generated. Moreover, the constraint component and the energy dissipation core material pipe are both round steel pipes, so that the symmetry is good, and the stability is better under the condition of the same cross-sectional area.
The utility model firstly selects the optimal energy dissipation core material pipe 2, the outer constraint pipe 1 and the inner constraint steel pipe 3 according to the plane size, the basic period, the quality, the rigidity and the like of the actual building structure; and then determining the required prestress material 6 and the prestress required to be applied according to the energy dissipation core material tube 2. When the building structure vibrates, the first sliding plate 9 and the second sliding plate 10 are driven to move relatively, the prestress of the prestress material 6 is increased, and when the earthquake motion of the building structure disappears, the prestress of the prestress material 6 is used for reducing or eliminating the residual deformation of the energy consumption core material tube 2, the structure is driven to reduce or eliminate the residual deformation of the structure, and the structure is enabled to be restorable. From this it sees that, the utility model relates to a novel four sleeve pipes utilize prestressing force of prestressing force material 6 will be used for reducing or eliminating power consumption core pipe 2 residual deformation from restoring to throne bucking restraint brace, have solved the too big problem of residual deformation after traditional bucking restraint brace shakes. The utility model relates to a novel four sleeve pipes are from restoring to throne bucking restraint and are supported has simple structure, arrange in a flexible way, can be according to demand adjustment size proportion.
Claims (10)
1. The novel four-sleeve buckling restrained brace is characterized by comprising an inner restrained steel pipe (3), wherein an energy consumption core pipe (2) is sleeved outside the inner restrained steel pipe (3), an outer restrained pipe (1) is sleeved outside the energy consumption core pipe (2), the same end of the energy consumption core pipe (2) and the same end of the inner restrained steel pipe (3) are fixedly connected to the same side of a first force transmission plate (7), the other side of the first force transmission plate (7) is fixedly connected with a first connecting piece (13), the other end of the energy consumption core pipe (2) is fixedly connected with the inner side of the outer restrained pipe (1), and meanwhile, the outer side of the outer restrained pipe (1) is fixedly connected with an outer force transmission steel pipe (4); the outer side of the first force transmission plate (7) is tightly attached to the inner side of the first sliding plate (9), the inner side of the first sliding plate (9) is tightly attached to the first force transmission plate (7) and the outer constraint pipe (1) at the edge of the same end, the other ends of the outer constraint pipe (1), the energy dissipation core pipe (2) and the inner constraint steel pipe (3) are closely attached to the inner side of the second sliding plate (10), a prestressed material (6) is arranged between the second sliding plate (10) and the first sliding plate (9), the prestressed material (6) penetrates through the first sliding plate (9) and is anchored through a first group of anchors (11), the prestressed material (6) penetrates through the second sliding plate (10) and is anchored through a second group of anchors (12), the outer sleeve force transmission steel pipe (4) is fixedly connected with the inner side of the second force transmission plate (8), and the outer side of the outer sleeve force transmission steel pipe is fixedly connected with the second group of connecting pieces (14).
2. The novel four-sleeve buckling restrained brace is characterized in that the energy dissipation core material tube (2) is made of low-yield-point steel and is provided with a middle yield energy dissipation section, a transition section and two end non-yield force transmission sections;
the middle yield energy consumption section of the energy consumption core material pipe (2) is subjected to tapping weakening treatment, and tapping weakening is divided into multiple forms of single-row long holes, double-row short holes and multiple rows of small holes.
3. The novel four-sleeve buckling restrained brace as claimed in claim 2, wherein the two ends of the opening of the middle yielding energy dissipation section of the energy dissipation core tube (2) are circular or oval to form a transition section.
4. The novel four-sleeve buckling restrained brace according to claim 1, wherein the outer restraining tube (1), the inner restraining steel tube (3), the outer sleeved force transmission steel tube (4), the first force transmission plate (7), the second force transmission plate (8), the first sliding plate (9) and the second sliding plate (10) are all made of high-strength steel.
5. The novel four-sleeve buckling restrained brace as claimed in claim 1, wherein unbonded filling material (5) is filled in gaps among the outer constraint tube (1), the energy dissipation core tube (2) and the inner constraint steel tube (3), and the unbonded filling material (5) is rubber.
6. The novel four-sleeve buckling restrained brace as claimed in claim 1, wherein the prestressed material (6) is an unbonded low-relaxation prestressed steel strand, the prestressed material (6) penetrates through the inner-constraint steel pipe (3), the first force transmission plate (7), the first sliding plate (9) and the second sliding plate (10), two ends of the prestressed material (6) are anchored on the outer sides of the first sliding plate (9) and the second sliding plate (10) through a first group of anchors (11) and a second group of anchors (12), the prestressed material (6) is always prestressed, and the prestressed initial force of the prestressed material (6) is greater than the yield load of the middle yield energy dissipation section of the energy dissipation core pipe (2);
round holes are punched in the first force transmission plate (7), the first sliding plate (9) and the second sliding plate (10) so that the prestressed steel strands can penetrate through the round holes.
7. A novel four-sleeve buckling restrained brace according to claim 1, wherein the first set of anchors (11) are extrusion anchors and the second set of anchors (12) are clip anchors.
8. The novel four-sleeve buckling restrained brace as recited in claim 1, wherein a cross groove is formed in the middle of the first sliding plate (9), the protruding right-angle portion is subjected to chamfering treatment, and the first connecting piece (13) and the second connecting piece (14) are all cross-shaped connecting pieces formed by welding high-strength steel plates.
9. The novel four-sleeve buckling restrained brace as recited in claim 1, wherein a certain gap is left between the peripheral edge of the second sliding plate (10) and the inner side of the outer sleeve force transmission steel pipe (4).
10. The novel four-sleeve buckling restrained brace as recited in claim 1, wherein the contact surfaces of the first connecting member (13) and the first sliding plate (9) and the contact surfaces of the outer-sleeved force transmission steel pipe (4) and the second sliding plate (10) are lubricated with lubricating oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021268693.XU CN212715442U (en) | 2020-07-01 | 2020-07-01 | Novel four-sleeve buckling restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021268693.XU CN212715442U (en) | 2020-07-01 | 2020-07-01 | Novel four-sleeve buckling restrained brace |
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| Publication Number | Publication Date |
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| CN212715442U true CN212715442U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021268693.XU Active CN212715442U (en) | 2020-07-01 | 2020-07-01 | Novel four-sleeve buckling restrained brace |
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| CN (1) | CN212715442U (en) |
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2020
- 2020-07-01 CN CN202021268693.XU patent/CN212715442U/en active Active
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