CN215483747U - Energy consumption rod iron, energy consumption device and energy consumption structure - Google Patents
Energy consumption rod iron, energy consumption device and energy consumption structure Download PDFInfo
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- CN215483747U CN215483747U CN202121604136.5U CN202121604136U CN215483747U CN 215483747 U CN215483747 U CN 215483747U CN 202121604136 U CN202121604136 U CN 202121604136U CN 215483747 U CN215483747 U CN 215483747U
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Abstract
The utility model discloses an energy consumption steel bar, an energy consumption device and an energy consumption structure. By giving accurate section design parameter guidance, the energy-consuming steel bar with the whole section yielding simultaneously is designed, and the energy-consuming performance of the steel bar is greatly optimized. The energy consumption device manufactured by using the energy consumption steel bar element has the advantages of full hysteresis curve, excellent energy consumption capability, stable performance and higher engineering application value.
Description
Technical Field
The utility model relates to the technical field of building structures, in particular to an energy-consuming steel bar, an energy-consuming device and an energy-consuming structure.
Background
Generally, metal dampers are not strictly designed in cross section, stress is often uneven under the action of load, and energy dissipation components are subjected to yield concentration in a small range, so that the dampers are easy to generate local damage during large displacement, the overall performance of the dampers is affected, and even the whole components fail.
SUMMERY OF THE UTILITY MODEL
The utility model aims to at least solve one of the technical problems in the prior art and provides an energy-consuming steel bar, an energy-consuming device and an energy-consuming structure.
According to an embodiment of the first aspect of the utility model, there is provided an energy dissipating steel bar comprising: the first fixed end, the bending yield section and the second fixed end are sequentially connected;
and taking the geometric center of the energy-consuming steel bar as an original point, taking the axis of the energy-consuming steel bar as an X axis, taking any direction perpendicular to the axial direction as a Y axis to establish a coordinate system, and taking the radius of the energy-consuming steel bar as r, wherein the change formula of the radius r of the energy-consuming steel bar along with the coordinate of the X axis is as follows:
and alpha is a section coefficient and can be obtained by determining the half-limb length of the energy-consuming steel bar and the maximum radius end in the flexural yield section.
Has the advantages that: the energy-consuming steel bar gives accurate section design parameter guidance, designs the energy-consuming steel bar with a full section yielding at the same time, and greatly optimizes the energy-consuming performance of the steel bar.
According to the energy-consuming steel bar disclosed by the embodiment of the first aspect of the utility model, the flexural yielding section comprises a first flexural yielding section, a shearing section and a second flexural yielding section which are sequentially connected;
let the radius of the shear segment be rsThen, the formula of the radius of the shear segment is:
wherein r is0The radius of the end part is shown, and l is the half-limb length of the energy-consuming steel bar.
According to a second aspect of the present invention, there is provided an energy consumption device, including:
an energy dissipating steel bar as in the embodiment of the first aspect of the utility model;
the first mounting plate is provided with a plurality of first mounting holes;
the second mounting plate is provided with a plurality of second mounting holes, the axis of each second mounting hole is collinear with the axis of each first mounting hole, and the axis of each second mounting hole and the axis of each first mounting hole are vertically arranged;
first stiff end fixed connection be in first mounting hole, the second stiff end can set up along endwise slip second mounting hole.
According to an embodiment of the third aspect of the present invention, there is provided a power dissipating structure including:
the energy consuming device of the embodiment of the second aspect of the utility model;
the first mounting plate is connected with the cross beam or the vertical connecting structure;
the second mounting plate is borne on the section steel support or the reinforced concrete buttress.
According to an embodiment of a fourth aspect of the present invention, there is provided a power dissipating structure including:
the energy consuming device of the embodiment of the second aspect of the utility model;
the energy dissipation device comprises a first structure and a second structure which are spaced up and down, wherein a vertical connecting structure is arranged between the first structure and the second structure, the upper end of the vertical connecting structure is connected with the first structure, the lower end of the vertical connecting structure is connected with a first mounting plate, a second mounting plate is connected with the second structure, and the energy dissipation device is closer to the second structure relative to the first structure.
According to an embodiment of the fifth aspect of the present invention, there is provided an energy dissipating steel bar, comprising: the hinged end, the bending yielding part and the fixed connection end are sequentially connected;
taking the center of the hinged end as an original point, taking the axial direction of the energy-consuming steel bar as an X axis, and taking any direction perpendicular to the axial direction as a Y axis to establish a coordinate system, wherein the obtained change formula of the energy-consuming steel bar r along with the X axis coordinate is as follows:
wherein beta is a section coefficient, and can be obtained by determining the length of the energy-consuming steel bar and the maximum radius end in the flexural yield part.
According to an embodiment of the sixth aspect of the present invention, there is provided an energy consumption device, including:
an energy dissipating steel bar as in the fifth aspect embodiment of the utility model;
the first connecting plate is provided with a plurality of first connecting holes;
the second connecting plate is provided with a plurality of second connecting holes, the axis of each second connecting hole is collinear with the axis of each first connecting hole, and the axis of each second connecting hole and the axis of each first connecting hole are vertically arranged;
the fixed connection end is fixedly connected with the first connecting hole, and the hinged end can be hinged to the second connecting hole in an axially sliding mode.
According to a seventh aspect embodiment of the present invention, there is provided a power dissipating structure, including:
an energy consuming device as in the sixth aspect embodiment of the utility model;
the first connecting plate is connected with the cross beam or the vertical connecting structure;
the second connecting plate is borne on the section steel support or the reinforced concrete buttress.
According to an eighth aspect of the present invention, there is provided an energy dissipating structure, including:
an energy consuming device as in the sixth aspect embodiment of the utility model;
the energy dissipation device comprises a first component and a second component which are spaced up and down from each other, wherein a vertical connecting structure is arranged between the first component and the second component, the upper end of the vertical connecting structure is connected with the first component, the lower end of the vertical connecting structure is connected with a first connecting plate, the second connecting plate is connected with the second component, and the energy dissipation device is arranged close to the second component relative to the first component.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a fourth embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an amplifying device used in the embodiment of the present invention;
FIG. 6 is a schematic structural view of the support carried by the section steel according to the embodiment of the present invention;
FIG. 7 is a schematic structural view of the reinforced concrete buttress according to the embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 7, and in particular to fig. 1, an energy-consuming steel bar according to a first embodiment of the present invention includes: the first fixed end 1, the bending yield section and the second fixed end 5 are connected in sequence; the geometric center of the energy-consuming steel bar is taken as an original point, the axis of the energy-consuming steel bar is taken as an X axis, any direction perpendicular to the axial direction is taken as a Y axis to establish a coordinate system, and the radius of the energy-consuming steel bar is taken as r, so that the change formula of the radius r of the energy-consuming steel bar along with the X axis coordinate is as follows:
wherein alpha is a section coefficient and can be obtained by determining the half-limb length of the energy-consuming steel bar and the maximum radius end in the flexural yield section. Specifically, the energy-consuming steel bar is respectively provided with the first fixed end 1 and the second fixed end 5, so that the half-limb length of the energy-consuming steel bar refers to half of the length of the energy-consuming steel bar, further, the flexural yielding section is arranged to be a circumferential body structure with gradually changed sections, and the end with the largest radius in the flexural yielding section refers to the section radius at the position with the largest cross section in the flexural yielding section.
When a coordinate system is established, for a rod piece which is only subjected to lateral load of a rod end, the stress is mainly normal stress caused by bending moment, and the influence of shear stress caused by shearing force and normal stress caused by axial force is small and can be ignored, so that the effect of the bending moment is only considered when the section of the energy-consuming steel rod is designed. The first fixed end 1 and the second fixed end 5 only play a role in connection, do not participate in energy consumption work, and do not count in calculation.
In some embodiments, the first fixed end 1 and the second fixed end 5 are both cylindrical structures, and the flexural yielding section is a conical structure.
The energy-consuming steel bar gives accurate section design parameter guidance, designs the energy-consuming steel bar with a full section yielding at the same time, and greatly optimizes the energy-consuming performance of the steel bar.
Preferably, the flexural yielding section comprises a first flexural yielding section 2, a shear section 3 and a second flexural yielding section 4 which are sequentially connected;
the radius of the section of the energy-consuming steel bar is 0 at the original point, in order to reasonably transmit shearing force and axial force (mainly shearing force), a shearing resistant section 3 is arranged in the middle of the energy-consuming steel bar, the shearing bearing capacity of the shearing resistant section 3 is two times of the bending moment bearing capacity of the energy-consuming steel bar so as to prevent the section from shearing damage, and the radius of the shearing resistant section 3 is rsThen, the radius formula of the shear segment 3 is:
wherein r is0The radius of the end part is shown, and l is the half-limb length of the energy-consuming steel bar.
The half-limb length of the energy consumption steel bar refers to half of the length of the energy consumption steel bar, the first fixing end 1 and the second fixing end 5 only play a role in connection, and in consideration of the actual working state of the energy consumption steel bar, the radius of the first fixing end 1 and the radius of the second fixing end 5 are generally recommended to be slightly larger than the maximum radius end in the flexural yield section. The energy-consuming steel bar mainly consumes energy through hysteresis of the flexural yielding section, and the first flexural yielding section 2 and the second flexural yielding section 4 are symmetrically arranged by taking the shear section 3 as a center and are both in a conical structure.
The cross section shape of the energy-consuming steel bar is obtained through strict stress derivation, and the purpose is to enable all the cross sections of the whole energy-consuming steel bar to yield simultaneously under the action of lateral force, so that the stress performance of the energy-consuming steel bar is improved, and the energy-consuming effect of the energy-consuming steel bar is enhanced.
Referring specifically to fig. 2, an energy consumption device, which is a second embodiment of the present invention, includes:
an energy dissipating steel bar as in the first embodiment of the utility model;
the first mounting plate 9 is provided with a plurality of first mounting holes;
the second mounting plate 10 is provided with a plurality of second mounting holes, the axis of each second mounting hole is collinear with the axis of each first mounting hole, and the axis of each second mounting hole and the axis of each first mounting hole are vertically arranged;
first stiff end 1 fixed connection is at first mounting hole, and second stiff end 5 can set up at the second mounting hole along axial sliding. Specifically, the second fixed end 5 is located at the end of the flexural yielding segment with the smaller cross section.
In some embodiments, the first fixing end 1 is mounted to the first mounting hole by welding or screwing, and the second mounting hole is a cylindrical hole as a sliding groove to allow the energy-consuming steel rod to slide in the axial direction, so as to release the axial force of the energy-consuming steel rod. The energy-consuming steel bar has obvious change along the axial section area, and has a thinner part, the stress of the part is far greater than that of the other part under the action of axial force, so that the part is easy to damage, and the problem is well solved by arranging the sliding groove.
In some embodiments, the first mounting plate 9 and the second mounting plate 10 are both steel plates, and each first mounting hole is uniformly arrayed on the first mounting plate 9, and each second mounting hole is uniformly arrayed on the second mounting plate 10.
With particular reference to fig. 6 and 7, an energy dissipating structure comprises:
an energy consuming device as in the second embodiment of the utility model;
the first mounting plate 9 is connected with a cross beam or vertical connecting structure 13;
the second mounting plate 10 is carried on a steel section support 14 or reinforced concrete pier 15.
The energy dissipation device manufactured by the energy dissipation steel bar is flexible and changeable in application and installation mode, can be borne on the section steel support 14, is fixedly installed on the section steel support 14 and the beam through bolts, can also be borne on the reinforced concrete buttress 15, and is fixedly installed on the reinforced concrete buttress 15 through bolts.
With particular reference to fig. 5, an energy dissipating structure comprises:
an energy consuming device as in the second embodiment of the utility model;
the energy dissipation device comprises a first structure and a second structure which are spaced up and down, a vertical connecting structure 13 is arranged between the first structure and the second structure, the first structure is connected to the upper end of the vertical connecting structure 13, a first mounting plate 9 is connected to the lower end of the vertical connecting structure 13, a second mounting plate 10 is connected to the second structure, and the energy dissipation device is arranged close to the second structure relative to the first structure.
The energy dissipation device adopts a lever principle to form an amplification device, and the vertical connecting structure 13 is used as a lever and is introduced into the energy dissipation steel bar, so that the energy dissipation effect of the energy dissipation device can be obviously enhanced, the energy dissipation device can also be subjected to yielding under the action of a small earthquake, and the problem that the energy dissipation of a common metal damper is difficult under the action of the small earthquake is solved.
Referring specifically to fig. 3, an energy-consuming steel bar according to a third embodiment of the present invention includes: the hinge end 6, the bending yielding part 7 and the fixed connection end 8 are connected in sequence;
the center of the hinged end 6 is used as an original point, the axial direction of the energy-consuming steel bar is used as an X axis, any direction perpendicular to the axial direction is used as a Y axis to establish a coordinate system, and the obtained change formula of the energy-consuming steel bar r along with the X axis coordinate is as follows:
wherein beta is a section coefficient and can be obtained by determining the length of the energy-consuming steel bar and the maximum end of the radius in the flexural yield part 7. Specifically, the flexural yielding portion 7 is configured as a circumferential body structure with a gradually changing section, and the end with the largest radius in the flexural yielding portion 7 refers to the section radius at the largest cross section in the flexural yielding portion 7. When the cross section of the energy-consuming steel bar is designed, only the action of bending moment is considered, the hinged end 6 and the fixed connection end 8 only play a role in connection, do not participate in energy-consuming work, and do not count in calculation. The energy-consuming steel bar consumes energy mainly through hysteresis of the flexural yielding part 7.
In some embodiments, the fixed end 8 is a cylindrical structure, the hinged end 6 is provided with a spherical hinge, the radius of the hinged end 6 is the same as that of the fixed end 8, the geometric center of the hinged end 6 is the origin of coordinates, and the flexural yield section is a conical structure.
The energy-consuming steel bar gives accurate section design parameter guidance, designs the energy-consuming steel bar with a full section yielding at the same time, and greatly optimizes the energy-consuming performance of the steel bar.
Referring specifically to fig. 4, an energy consumption device is a fourth embodiment of the present invention, and includes:
an energy dissipating steel bar as in the third embodiment of the utility model;
the first connecting plate 11 is provided with a plurality of first connecting holes;
the second connecting plate 12 is provided with a plurality of second connecting holes, the axis of each second connecting hole is collinear with the axis of each first connecting hole, and the axis of each second connecting hole and the axis of each first connecting hole are vertically arranged;
the fixed connection end 8 is fixedly connected to the first connection hole, and the hinge end 6 is hinged to the second connection hole in an axially sliding manner. In particular, the hinged end 6 is located at the end of the flexural yield 7 with the smaller cross section.
In some embodiments, the fastening end 8 is mounted to the first connecting hole by welding or screwing, and the second connecting hole is a cylindrical hole as a sliding slot allowing the energy-consuming steel rod to slide in the axial direction in order to release the axial force of the energy-consuming steel rod. The energy-consuming steel bar has obvious change along the axial section area, and has a thinner part, the stress of the part is far greater than that of the other part under the action of axial force, so that the part is easy to damage, and the problem is well solved by arranging the sliding groove.
In some embodiments, the first connecting plate 11 and the second connecting plate 12 are both steel plates, and each first connecting hole is uniformly arrayed on the first connecting plate 11, and each second connecting hole is uniformly arrayed on the second connecting plate 12.
Referring to fig. 6 and 7, a power dissipating structure includes:
an energy consuming device as in the fourth embodiment of the utility model;
the first connecting plate 11 is connected with a cross beam or vertical connecting structure 13;
the second connecting plate 12 is carried on a section steel support 14 or a reinforced concrete pier 15.
The energy dissipation device manufactured by the energy dissipation steel bar is flexible and changeable in application and installation mode, can be borne on the section steel support 14, is fixedly installed on the section steel support 14 and the beam through bolts, can also be borne on the reinforced concrete buttress 15, and is fixedly installed on the reinforced concrete buttress 15 through bolts.
Referring to fig. 5, a power dissipating structure includes:
an energy consuming device as in the fourth embodiment of the utility model;
the energy consumption device comprises a first component and a second component which are spaced up and down from each other, a vertical connecting structure 13 is arranged between the first component and the second component, the upper end of the vertical connecting structure 13 is connected with the first component, the lower end of the vertical connecting structure 13 is connected with a first connecting plate 11, a second connecting plate 12 is connected with the second component, and the energy consumption device is arranged close to the second component relative to the first component.
The energy dissipation device adopts a lever principle to form an amplification device, and the vertical connecting structure 13 is used as a lever and is introduced into the energy dissipation steel bar, so that the energy dissipation effect of the energy dissipation device can be obviously enhanced, the energy dissipation device can also be subjected to yielding under the action of a small earthquake, and the problem that the energy dissipation of a common metal damper is difficult under the action of the small earthquake is solved.
Compared with a common energy-consuming steel bar, the energy-consuming steel bar can realize simultaneous yielding of the whole cross section, stress is uniformly distributed along the axial direction, and the phenomenon of premature failure due to overlarge local stress is avoided, so that the ductility of the energy-consuming steel bar is greatly improved. The energy consumption device manufactured by using the energy consumption steel bar element has the advantages of full hysteresis curve, excellent energy consumption capability, stable performance and higher engineering application value.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (9)
1. An energy dissipating steel bar, comprising: the first fixed end, the bending yield section and the second fixed end are sequentially connected;
and taking the geometric center of the energy-consuming steel bar as an original point, taking the axis of the energy-consuming steel bar as an X axis, taking any direction perpendicular to the axial direction as a Y axis to establish a coordinate system, and taking the radius of the energy-consuming steel bar as r, wherein the change formula of the radius r of the energy-consuming steel bar along with the coordinate of the X axis is as follows:
and alpha is a section coefficient and can be obtained by determining the half-limb length of the energy-consuming steel bar and the maximum radius end in the flexural yield section.
2. The energy dissipating steel bar of claim 1, wherein: the flexural yield section comprises a first flexural yield section, a shear section and a second flexural yield section which are sequentially connected;
let the radius of the shear segment be rsThen, the formula of the radius of the shear segment is:
wherein r is0The radius of the end part is shown, and l is the half-limb length of the energy-consuming steel bar.
3. An energy consuming device, comprising:
the energy dissipating steel bar of claim 1 or 2;
the first mounting plate is provided with a plurality of first mounting holes;
the second mounting plate is provided with a plurality of second mounting holes, the axis of each second mounting hole is collinear with the axis of each first mounting hole, and the axis of each second mounting hole and the axis of each first mounting hole are vertically arranged;
first stiff end fixed connection be in first mounting hole, the second stiff end can set up along endwise slip second mounting hole.
4. An energy dissipating structure, comprising:
the energy consuming device of claim 3;
the first mounting plate is connected with the cross beam or the vertical connecting structure;
the second mounting plate is borne on the section steel support or the reinforced concrete buttress.
5. An energy dissipating structure, comprising:
the energy consuming device of claim 3;
the energy dissipation device comprises a first structure and a second structure which are spaced up and down, wherein a vertical connecting structure is arranged between the first structure and the second structure, the upper end of the vertical connecting structure is connected with the first structure, the lower end of the vertical connecting structure is connected with a first mounting plate, a second mounting plate is connected with the second structure, and the energy dissipation device is closer to the second structure relative to the first structure.
6. An energy dissipating steel bar, comprising: the hinged end, the bending yielding part and the fixed connection end are sequentially connected;
taking the center of the hinged end as an original point, taking the axial direction of the energy-consuming steel bar as an X axis, and taking any direction perpendicular to the axial direction as a Y axis to establish a coordinate system, wherein the obtained change formula of the energy-consuming steel bar r along with the X axis coordinate is as follows:
wherein beta is a section coefficient, and can be obtained by determining the length of the energy-consuming steel bar and the maximum radius end in the flexural yield part.
7. An energy consuming device, comprising:
the energy dissipating steel bar of claim 6;
the first connecting plate is provided with a plurality of first connecting holes;
the second connecting plate is provided with a plurality of second connecting holes, the axis of each second connecting hole is collinear with the axis of each first connecting hole, and the axis of each second connecting hole and the axis of each first connecting hole are vertically arranged;
the fixed connection end is fixedly connected with the first connecting hole, and the hinged end can be hinged to the second connecting hole in an axially sliding mode.
8. An energy dissipating structure, comprising:
the energy consuming device of claim 7;
the first connecting plate is connected with the cross beam or the vertical connecting structure;
the second connecting plate is borne on the section steel support or the reinforced concrete buttress.
9. An energy dissipating structure, comprising:
the energy consuming device of claim 7;
the energy dissipation device comprises a first component and a second component which are spaced up and down from each other, wherein a vertical connecting structure is arranged between the first component and the second component, the upper end of the vertical connecting structure is connected with the first component, the lower end of the vertical connecting structure is connected with a first connecting plate, the second connecting plate is connected with the second component, and the energy dissipation device is arranged close to the second component relative to the first component.
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| CN202121604136.5U CN215483747U (en) | 2021-07-14 | 2021-07-14 | Energy consumption rod iron, energy consumption device and energy consumption structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809344A (en) * | 2022-04-07 | 2022-07-29 | 中建二局第一建筑工程有限公司 | Multi-section simultaneous yield metal damping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809344A (en) * | 2022-04-07 | 2022-07-29 | 中建二局第一建筑工程有限公司 | Multi-section simultaneous yield metal damping device |
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