CN209941946U - Novel double-core grid type buckling-restrained supporting structure - Google Patents
Novel double-core grid type buckling-restrained supporting structure Download PDFInfo
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- CN209941946U CN209941946U CN201920334280.8U CN201920334280U CN209941946U CN 209941946 U CN209941946 U CN 209941946U CN 201920334280 U CN201920334280 U CN 201920334280U CN 209941946 U CN209941946 U CN 209941946U
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Abstract
The utility model discloses a novel double-core grid type buckling-restrained supporting structure, which comprises a grid, a lead core, a stainless steel core, an outer steel package, a cover plate and a connecting end plate; the lead core is positioned in the center of the structure and sleeved in a groove at the lower end of the stainless steel core; the grating is uniformly wound around the stainless steel core, the upper end and the lower end of the grating are rectangular, the middle part of the grating is in a grating shape, the grating at the middle part of the grating is spot-welded on the stainless steel core, the cover plate is provided with a through hole, and the outer edge of the cover plate is connected with the outer wrapping steel; the outer steel wrap and the cover plates at the two ends form a closed space, and concrete is poured in the closed space; the lower part of the connecting end plate is provided with a rectangular groove for welding and fixing the rectangular part of the grid, and the upper part of the connecting end plate is uniformly distributed with 20 through holes for connecting bolts of the embedded joint; the buckling-restrained brace structure can absorb and dissipate energy generated by an earthquake during the earthquake, protects a main body structure from being damaged, and can be suitable for various civil engineering structures, particularly large-scale buildings and bridge structures.
Description
Technical Field
The utility model relates to a structural engineering field of combatting earthquake specifically is a novel two core grid formula buckling restrained brace structures.
Background
The buckling-restrained brace is a common energy-consuming and shock-absorbing engineering component, and the principle of action of the buckling-restrained brace is that the buckling-restrained brace is prior to the main body structure yielding during an earthquake, so that the energy generated by the earthquake is absorbed and dissipated, and the main body structure is protected from being damaged. It is mainly composed of three basic parts: an inner core yielding dissipative element, an outer cladding constraining member and an intermediate snap-in sliding unit. Because of stable performance, the composite material has outstanding protection effect in practice, and is widely applied to a plurality of large buildings such as large stadiums, high-rise office buildings, sea-crossing bridges and the like. However, the existing buckling restrained brace structure has some defects.
The invention patent with the application number of 201610398426.6 provides a two-stage yielding buckling-restrained brace structure, which can absorb and dissipate earthquake energy stage by stage according to different sizes of the energy generated by an earthquake, generates multiple deformation and is divided into two stages to yield, and solves the problem of serious rigidity degradation after the structure is buckled.
The invention patent of application No. 201611197765.4 provides a double-plate type buckling restrained brace structure, which improves the bearing capacity of the brace while reducing the welding area, however, the asymmetric structure of the composite double-plate type results in asymmetric bending rigidity, and the protection effect of the structure on the building can be weakened in a certain direction, so that the protection on the building is limited.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art, the utility model discloses the technical problem who plans to solve is: a dual-core grid type buckling restrained brace structure is provided. The buckling restrained brace structure mainly solves the problems in the existing design that: the welding area is too large, so that the defects of stress concentration, easy rusting after long-term exposure, unidirectional energy consumption and the like are caused, and the design has the advantages of simple structure, low price, difficult rusting, multi-direction and multi-dimensional energy consumption.
In order to solve the technical problem, the utility model provides a technical problem's technical scheme is: the buckling-restrained supporting structure is characterized by comprising a grid, a lead core, a stainless steel core, an outer wrapping steel, a cover plate and a connecting end plate; the section of the lead core is circular, is positioned in the center of the structure, is sleeved in a groove at the lower end of the stainless steel core, and the outer diameter of the lead core is consistent with the inner diameter of the groove of the stainless steel core; the upper end and the lower end of the grating are rectangular, the middle part of the grating is in a grating shape, the two parts are connected in a spot welding mode, and the grating of the middle part is spot-welded on the stainless steel core; the number of the grids is generally four, an angle formed between every two adjacent grids is 90 degrees, the four grids uniformly surround the stainless steel core, and the top ends of the four grids are flush with the top end of the stainless steel core; the outer edge of the cover plate is circular, two crossed rectangular through holes are formed in the outer edge of the cover plate, circular through holes are formed in the crossed positions, and the combined parts of the grating and the stainless steel core penetrate through the through holes of the cover plate; the outer edge of the cover plate is connected with the outer steel cladding, the end face of the cover plate is flush with the end face of the outer steel cladding, and the outer steel cladding is cylindrical; the outer steel cover and the cover plates at two ends form a closed space, concrete is poured in the closed space, and the middle part of the grating, the middle part of the stainless steel core and the whole lead core are surrounded; the lower part of the connecting end plate is provided with a rectangular groove for welding and fixing the rectangular part of the grating, and the upper part of the connecting end plate is uniformly distributed with 20 through holes for fixedly connecting bolts of the embedded joint.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the lead core and the steel core are connected in a sleeved mode, and the energy consumption performance of the lead material and the steel material is fully utilized. Because the lead material has a dynamic recrystallization function, the lead material can be circulated for thousands of times without rigidity degradation in a designed deformation range, the mechanical property of the lead material can be ensured to be unchanged, and the working performance is very stable; the lead core is used with the steel core cooperation and can guarantee the holistic rigidity and the stability of structure. Therefore, the lead material is added, and the plastic deformation capacity of the lead material is utilized to provide damping, so that the hysteresis loop of the structure under reciprocating motion can be fully filled, and the energy consumption of the structure is improved.
(2) The stiffening plate adopts a grid type design. The grid can work together with the surrounding concrete to ensure better embedment and can significantly increase and destroy the frictional properties between the concrete after the surrounding concrete is destroyed. The structure can further improve the energy consumption by utilizing the repeated friction between the grating and the damaged concrete, and the welding area between the grating and the core rod is small, so that the stress concentration phenomenon is not easy to generate.
(3) The stability of structure can be guaranteed to outsourcing steel pipe and concrete, prevents inside environmental water infiltration structure simultaneously, has avoided the corrosion of core and grid under adverse circumstances, has improved the effective working life of structure, and has simple structure, and processing is convenient, low price's characteristics.
(4) And aiming at different stress conditions, different parts consume energy. When the structure is pulled, the grid and the concrete are converted into a friction energy consumption state from embedding; when the structure is pressed, the lead core and the steel core generate deformation energy consumption together, and the plastic deformation performance of the lead material is fully utilized for energy consumption; when the structure is bent, the steel pipe, the lead core and the grid are wrapped to consume energy together. The energy consumption mode can reduce the energy consumption pressure of a single part, prevent the single part from being damaged due to failure, ensure the structure to effectively consume energy under the condition of complex earthquake, and form multi-level, multi-dimensional and multi-level protection for the building.
Drawings
Fig. 1 is a schematic front view of an overall structure of an embodiment of the novel dual-core grid-type buckling-restrained brace structure of the present invention;
fig. 2 is a schematic front view of a grid member 1 of an embodiment of the novel dual-core grid type buckling restrained brace structure of the present invention;
fig. 3 is a schematic top view of the overall structure of a circular four-groove cover plate according to an embodiment of the novel dual-core grid-type buckling restrained brace structure of the present invention;
fig. 4 is a schematic top view of the overall structure of a square four-groove cover plate according to an embodiment of the novel dual-core grid type buckling restrained brace structure of the present invention;
fig. 5 is a schematic top view of the overall structure of a circular six-groove cover plate according to an embodiment of the novel dual-core grid-type buckling restrained brace structure of the present invention;
fig. 6 is a schematic front view of a connecting end plate member 6 according to an embodiment of the novel dual-core grid type buckling restrained brace structure of the present invention;
fig. 7 is a schematic view, partially in section, of an embodiment of the novel dual-core grid-type buckling restrained brace structure of the present invention;
fig. 8 is a schematic front view of a sheathing structure of a lead core and a stainless steel core according to an embodiment of the novel dual-core grid type buckling restrained brace structure of the present invention;
fig. 9 is a schematic front view of the cover plate 5 of an embodiment of the novel dual-core grid type buckling restrained brace structure of the present invention;
fig. 10 is a partially enlarged schematic view of an embodiment of the novel dual-core grid-type buckling restrained brace structure of the present invention;
in the figure: 1. grid, 2, lead core, 3, stainless steel core, 4, outsourcing steel, 5, apron, 6, connection end plate.
Detailed Description
Specific embodiments of the present invention are given below. The specific embodiments are only used for further elaboration of the invention, and do not limit the scope of protection of the claims of the present application.
The utility model provides a novel double-core grid type buckling-restrained brace structure (see figures 1-10, referred to as energy dissipation brace device for short), which is characterized in that the energy dissipation brace device comprises a grid 1, a lead core 2, a stainless steel core 3, an outer steel cover 4, a cover plate 5 and a connecting end plate 6;
the connecting end plate 6 is connected to an embedded joint of a building through bolts, and 20 through holes are uniformly distributed in the upper part of the connecting end plate 6 and used for fixing the bolts for connecting the embedded joint; the lower part of the grid is provided with a rectangular groove for welding and fixing the grid 1; the upper end and the lower end of the grid 1 are rectangular, the middle part of the grid is in a grid shape, and the two parts are connected in a spot welding mode; in the embodiment, the number of the grids 1 is four, and the angle formed between every two adjacent grids 1 is 90 degrees; the four grids 1 are mutually surrounded to form a hollow cuboid, and a circular stainless steel core 3 is placed in the hollow cuboid; the top end of the stainless steel core 3 is flush with the top end of the grating 1; the stainless steel core 3 is clamped between the two symmetrical grids 1 and is welded in the rectangular groove of the connecting end plate 6; the stainless steel core 3 is connected with the grating 1 by spot welding;
the lower end of the stainless steel core 3 is provided with a groove for sleeving and fixing the lead core 2; the section of the lead core 2 is circular; the outer diameter of the lead core 2 is as large as the inner diameter of the groove of the stainless steel core 3;
the lower end of the rectangular part of the grid 1 is connected with a cover plate 5, and the cover plate 5 is positioned below the connecting end plate 6; the cover plate 5 is provided with two crossed rectangular through holes, and circular through holes are arranged at the crossed points; the four grid 1 and stainless steel core 3 combined parts pass through the through hole of the cover plate 5; the outer edge of the cover plate 5 is circular;
the outer edge of the cover plate 5 is connected with the outer steel clad 4; the end face of the cover plate 5 is flush with the end face of the outer steel clad 4; the shape of the clad steel 4 is cylindrical.
The utility model is further characterized in that the structure is a vertical symmetrical structure.
The steel casing 4 and the cover plates 5 at the two ends form a closed space, concrete is poured into the closed space, and the middle part of the grid 1 is embedded in the concrete. The concrete surrounds the stainless steel core 3 and the lead core 2.
The upper stainless steel core and the lower stainless steel core 3 are not contacted, and only the two ends of the lead core 2 are sleeved and fixed.
The two symmetrical grids 1 form a plane, the connecting end plate 6 is only connected with one group of coplanar grids 1, and at least four grids 1 are arranged in the circumferential direction, so that the rigidity uniformity in all directions can be ensured.
The grating 1 can form a plurality of coplanar structures, through grooves with corresponding numbers are manufactured in the center of the cover plate 5 matched with the grating, the shape of the outer steel clad 4 can be cylindrical or square, and the outer edge of the cover plate 5 matched with the outer steel clad can be circular or square.
The utility model relates to a novel two core grid formula buckling restrained brace structure's theory of operation and working process are: the connecting end plates 6 at the two ends are connected to the embedded joints of the building through bolts, and the building is supported. When an earthquake comes, the direction of the building movement is uncertain, and then the deformation direction of the structure is uncertain. For the deformation in the compression direction, the lead core 1 mainly enters a plastic deformation stage to perform energy dissipation and shock absorption, if the compression amount is large and exceeds the length of the lead core 1, the two steel cores 2 start to contact with each other to further perform energy dissipation and shock absorption, and the structure can simultaneously adapt to the conditions of large shock and medium shock. For the deformation in the stretching direction, due to the special grid structure of the grid 1, the grid 1 can be fully embedded in concrete, and can be repeatedly rubbed with surrounding crushed concrete under the condition of a violent earthquake to perform friction energy consumption. For the deformation in the bending direction, the lead core 2 is used for bending energy dissipation, the two grids 1 which are symmetrically arranged are used for bending energy dissipation, and the outer steel wrapping 4 is used for bending energy dissipation, so that the characteristic of multi-dimensional energy dissipation is realized.
The structure can absorb deformation damage energy in all directions, can simultaneously adapt to two conditions of medium earthquake and large earthquake, can not cause the condition that the building is damaged before the energy consumption supporting device for the medium earthquake, and can not cause the condition that the supporting energy consumption device is prematurely yielding and fails for the large earthquake.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
The utility model discloses the nothing is mentioned the part and is applicable to prior art.
Claims (4)
1. A novel double-core grid type buckling-restrained supporting structure is characterized by comprising a grid, a lead core, a stainless steel core, an outer wrapping steel, a cover plate and a connecting end plate; the section of the lead core is circular, is positioned in the center of the structure, is sleeved in a groove at the lower end of the stainless steel core, and the outer diameter of the lead core is consistent with the inner diameter of the groove of the stainless steel core; the upper end and the lower end of the grating are rectangular, the middle part of the grating is in a grating shape, the two parts are connected in a spot welding mode, and the grating in the middle part is spot-welded on the stainless steel core; the number of the grids is four, the angle between every two adjacent grids is 90 degrees, the four grids uniformly surround the stainless steel core, and the top ends of the four grids are flush with the top end of the stainless steel core; the outer edge of the cover plate is circular, two crossed rectangular through holes are formed in the outer edge of the cover plate, circular through holes are formed in the crossed positions, and the combined parts of the grating and the stainless steel core penetrate through the through holes of the cover plate; the outer edge of the cover plate is connected with the outer steel cladding, the end face of the cover plate is flush with the end face of the outer steel cladding, and the outer steel cladding is cylindrical; the outer steel cover and the cover plates at two ends form a closed space, concrete is poured in the closed space, and the closed space surrounds the middle part of the grating, the middle part of the stainless steel core and the whole lead core; the lower part of the connecting end plate is provided with a rectangular groove for welding the rectangular part of the grating, and the upper part of the connecting end plate is uniformly distributed with 20 through holes for fixedly connecting bolts of the embedded joint.
2. The novel dual-core lattice type buckling restrained brace structure of claim 1, wherein the buckling restrained brace structure is a dual-core lattice type.
3. The novel dual-core grid-type buckling restrained brace structure of claim 1, wherein the lead core and the stainless steel core are connected in a sleeved manner.
4. The novel dual-core grid-type buckling restrained brace structure of claim 1, wherein said grid is uniformly wound around the stainless steel core, and the middle portion of the grid is spot-welded to the stainless steel core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920334280.8U CN209941946U (en) | 2019-03-08 | 2019-03-08 | Novel double-core grid type buckling-restrained supporting structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920334280.8U CN209941946U (en) | 2019-03-08 | 2019-03-08 | Novel double-core grid type buckling-restrained supporting structure |
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| CN209941946U true CN209941946U (en) | 2020-01-14 |
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| CN201920334280.8U Expired - Fee Related CN209941946U (en) | 2019-03-08 | 2019-03-08 | Novel double-core grid type buckling-restrained supporting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030349A (en) * | 2022-07-27 | 2022-09-09 | 东华理工大学 | Multiple energy-consumption all-steel buckling-restrained brace integrating friction energy dissipation mechanism |
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2019
- 2019-03-08 CN CN201920334280.8U patent/CN209941946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030349A (en) * | 2022-07-27 | 2022-09-09 | 东华理工大学 | Multiple energy-consumption all-steel buckling-restrained brace integrating friction energy dissipation mechanism |
| CN115030349B (en) * | 2022-07-27 | 2023-10-03 | 东华理工大学 | Multiple power consumption all-steel buckling restrained brace integrating friction energy dissipation mechanism |
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| CF01 | Termination of patent right due to non-payment of annual fee |