CN114606854A - Bridge high pier buckling-restrained brace - Google Patents
Bridge high pier buckling-restrained brace Download PDFInfo
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- CN114606854A CN114606854A CN202111555710.7A CN202111555710A CN114606854A CN 114606854 A CN114606854 A CN 114606854A CN 202111555710 A CN202111555710 A CN 202111555710A CN 114606854 A CN114606854 A CN 114606854A
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- steel plates
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- memory alloy
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 98
- 239000010959 steel Substances 0.000 claims abstract description 98
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000005265 energy consumption Methods 0.000 claims abstract description 16
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 230000002146 bilateral effect Effects 0.000 claims 2
- 238000003466 welding Methods 0.000 claims 2
- 230000006870 function Effects 0.000 abstract description 6
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The utility model provides a bridge high mound buckling restrained brace to strengthen double-column mound transverse rigidity and increase the ability that the pier shaft resisted the horizontal load, and the earthquake damage of effective control double-column high mound just has from reset function, thereby guarantees bridge shock resistance. The transverse two sides of the X-shaped constraint framework are respectively provided with an external connecting steel plate, a group of first internal connecting steel plates and a group of second internal connecting steel plates, the inner ends of the first internal connecting steel plates and the second internal connecting steel plates are respectively hinged with the limb ends at the same side of the first soft steel plates and the second soft steel plates, the outer ends of the first internal connecting steel plates and the second internal connecting steel plates are hinged with the inner ends of the external connecting steel plates at the same side to form a force transmission and energy consumption mechanism, and shape memory alloy springs which directly or indirectly act on the X-shaped constraint framework to enable the X-shaped constraint framework to be deformed and then reset are symmetrically arranged in the force transmission and energy consumption mechanism. The main body of the force transmission and energy dissipation mechanism is packaged in a constraint steel box for controlling longitudinal and transverse deformation of the mechanism, the middle part of an X-shaped constraint framework is welded with the front and rear plate surfaces of the constraint steel box, and the outer ends of the two side external connection steel plates extend out of the constraint steel box to be connected with a bridge pier column.
Description
Technical Field
The invention relates to a bridge, in particular to a buckling-restrained brace for a high pier of the bridge.
Background
The topography, landform and geological conditions of western mountainous areas in China are very complex, and the ecological environment of some areas is particularly fragile. In order to protect the western natural ecological environment and the limited cultivated land resources in the mountain area, a plurality of bridges with few excavations and few fillings are required to be dug as much as possible. The western mountainous area traffic bridge limited by the terrain is often higher, the height of the bridge pier of the bridge often reaches more than 50m, each pier needs to bear the axial and horizontal load action from the upper part at the same time, and the high pier can play a role in amplifying the action effect of the horizontal load. Therefore, the connection between the double columns is the key point influencing the anti-seismic performance and the structural stability of the bridge double-column system.
In Wenchun earthquake in Sichuan, the earthquake damage of the bridge double-column system is generally serious, which indicates that the current double-column pier design is difficult to control the earthquake damage. Based on the concept of damping and energy consumption, the energy consumption device which is convenient for high pier construction and replacement is adopted to increase the connection rigidity and the energy consumption capacity of the double-column high pier, the damage control and the post-earthquake self-recovery function of the double-column high pier are realized, and the device has important significance for ensuring the anti-seismic capacity of the bridge and the post-earthquake repair-free vehicle-through capacity.
The buckling restrained brace using the reinforced concrete as the main material is not suitable for a high pier space structure due to the large self weight; the buckling-restrained brace mainly made of the traditional metal material is light in weight, but is inconvenient to mount in high altitude of a high pier and inconvenient to adjust in length.
The invention patent specification of the publication No. CN 111733999B discloses an X-shaped buckling-restrained brace with built-in steel plates passing through in a staggered manner, and the built-in steel plates are connected at the middle part to form the structure of the X-shaped buckling-restrained brace, so that the length of the yield section of the brace is increased, and the ductility and the energy consumption capability of the brace are improved. When the self-resetting device is applied to high double column piers of a bridge.
Disclosure of Invention
The invention aims to provide a bridge high pier buckling-restrained brace, which is used for enhancing the transverse rigidity of a double-column pier, increasing the horizontal load resistance of a pier body, effectively controlling the earthquake damage of the double-column high pier and has a self-resetting function, thereby ensuring the earthquake resistance of a bridge and the vehicle-cleaning capability without repairing after the earthquake.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the invention relates to a bridge high pier buckling-restrained brace, which comprises an X-shaped restrained framework, wherein the X-shaped restrained framework consists of a first soft steel plate and a second soft steel plate, the middle parts of the first soft steel plate and the second soft steel plate are crossed and fixedly connected into a whole, and the X-shaped restrained framework is characterized in that: the X-shaped restraint framework is characterized in that outer connecting steel plates, a group of first inner connecting steel plates and second inner connecting steel plates are respectively arranged on the two transverse sides of the X-shaped restraint framework, the inner ends of the first inner connecting steel plates and the second inner connecting steel plates are respectively hinged with the limb ends on the same side of the first soft steel plate and the second soft steel plate, the outer ends of the first inner connecting steel plates and the second inner ends of the second inner connecting steel plates are hinged with the limb ends on the same side of the first soft steel plate and the second soft steel plate, a force transmission and energy consumption mechanism is formed, and shape memory alloy springs which directly or indirectly act on the X-shaped restraint framework to deform and reset are symmetrically arranged in the force transmission and energy consumption mechanism; the main body of the force transmission and energy dissipation mechanism is packaged in a constraint steel box for controlling longitudinal and transverse deformation of the force transmission and energy dissipation mechanism, the middle part of an X-shaped constraint framework is welded with the front and rear plate surfaces of the constraint steel box, and the outer ends of the two side external connection steel plates extend out of the constraint steel box to be connected with a bridge pier column.
The beneficial effects of the invention are mainly reflected in the following aspects:
the force transmission and energy consumption mechanism is formed by an X-shaped constraint framework, an external connecting steel plate and an internal connecting steel plate, the transverse rigidity of the double-column pier can be enhanced under normal conditions, and the effect of increasing the horizontal load resistance of the pier body is achieved;
the energy dissipation capacity and the self-resetting capacity are realized, the yield point of an X-shaped constraint framework made of mild steel is low under the action of earthquake force, the input energy can be effectively dissipated, the shape memory alloy spring is used as a spring component, a certain energy dissipation and shock absorption effect is realized, the pier body structure is prevented from being damaged, and the self-resetting function is realized after the earthquake energy disappears;
and thirdly, the high-altitude installation is convenient, and the external connection end of the external connection steel plate can be in threaded connection with a member by adopting a reserved threaded connection or a reserved bolt hole.
Drawings
The specification includes the following five figures:
FIG. 1 is a schematic structural diagram of an embodiment 1 of the bridge high pier buckling-restrained brace of the invention;
FIG. 2 is a cross-sectional view of a restraining steel box in the bridge high pier buckling restrained brace of the invention;
FIG. 3 is a schematic structural diagram of embodiment 2 of the bridge high pier buckling-restrained brace of the invention;
FIG. 4 is a schematic structural diagram of embodiment 3 of the bridge high pier buckling-restrained brace of the invention;
FIG. 5 is a schematic structural diagram of an embodiment 4 of the bridge high pier buckling-restrained brace of the invention;
the figures show the components and corresponding references: the first soft steel limb plate 11, the second soft steel limb plate 12, the outer connecting steel plate 20, the first inner connecting steel plate 21, the second inner connecting steel plate 22, the shape memory alloy spring 30, the connecting ear plate 31, the reinforcing steel plate 32 and the restraining steel box 40.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1, the buckling restrained brace for the high pier of the bridge comprises an X-shaped restrained framework, wherein the X-shaped restrained framework is composed of a first soft steel plate 11 and a second soft steel plate 12 which are crossed at the middle part and fixedly connected into a whole. The transverse two sides of the X-shaped restraint framework are respectively provided with an outer connecting steel plate 20 and a group of first inner connecting steel plates 21 and second inner connecting steel plates 22, the inner ends of the first inner connecting steel plates 21 and the second inner connecting steel plates 22 are hinged with the limbs of the first soft steel plates 11 and the second soft steel plates 12 on the same side, and the outer ends of the first inner connecting steel plates and the second inner ends of the outer connecting steel plates 20 on the same side are hinged to form a force transmission and energy consumption mechanism. Shape memory alloy springs 30 which directly or indirectly act on the X-shaped constraint framework to enable the X-shaped constraint framework to be deformed and reset are symmetrically arranged in the mechanism. The main body of the force transmission and energy consumption mechanism is packaged in a restraint steel box 40 for controlling longitudinal and transverse deformation of the force transmission and energy consumption mechanism, the middle part of an X-shaped restraint framework is welded with the front and rear plate surfaces of the restraint steel box 40, and the outer ends of the two side outer connecting steel plates 20 extend out of the restraint steel box 40 to be connected with a bridge pier stud. .
Referring to fig. 1, when the external connection steel plate 20 is under tension, the shape memory alloy spring 30 is compressed by the hinge force transmission, the X-shaped constraint framework and the shape memory alloy spring 30 dissipate the input energy together, and when the external force disappears, the shape memory alloy spring 30 helps the X-shaped constraint framework to restore to the original state. Therefore, the transverse rigidity of the double pier can be enhanced under normal conditions, and the function of increasing the horizontal load resistance of the pier body is realized. Under the action of earthquake force, the X-shaped constraint framework made of mild steel has a low yield point and can effectively dissipate input energy, the shape memory alloy spring 30 serving as a spring component also has a certain energy dissipation and shock absorption effect, the pier body structure is prevented from being damaged, and the self-resetting function is realized after the earthquake energy disappears.
Referring to embodiment 1 shown in fig. 1, the shape memory alloy spring 30 is symmetrically arranged between the limbs of the X-shaped constraint skeleton, the first soft steel plate 11 and the second soft steel plate 12 are welded with the connecting ear plates 31 correspondingly, the shape memory alloy spring 30 extends vertically, and both ends are fixedly connected with the connecting ear plates 31.
Referring to embodiment 2 shown in fig. 3, the shape memory alloy spring 30 is symmetrically disposed between the first inner connecting steel plate 21 and the second inner connecting steel plate 22, the first inner connecting steel plate 21 and the second inner connecting steel plate 22 are correspondingly welded with the connecting ear plate 31, the shape memory alloy spring 30 extends vertically, and both ends of the shape memory alloy spring are fixedly connected with the connecting ear plate 31.
Referring to embodiment 3 shown in fig. 4, the shape memory alloy spring 30 is horizontally and symmetrically disposed between the first inner connecting steel plate 21, the second inner connecting steel plate 22 and the X-shaped restraining frame, a reinforcing steel plate 32 is welded to the middle of the X-shaped restraining frame, the shape memory alloy spring 30 extends horizontally, the inner end is fixedly connected to the reinforcing steel plate 32, and the outer end is connected to the hinge point of the first inner connecting steel plate 21, the second inner connecting steel plate 22 and the outer connecting steel plate 20.
Referring to embodiment 4 shown in fig. 5, the shape memory alloy spring 30 is disposed symmetrically up and down between the limbs of the X-shaped constraint skeleton, and the shape memory alloy spring 30 extends horizontally, and both ends are connected to the hinge points of the X-shaped constraint skeleton and the first and second inner connecting steel plates 21 and 22.
The foregoing is illustrative of the principles of the present invention for a bridge high pier buckling restrained brace and is not intended to limit the invention to the exact construction and applications shown and described, and accordingly, all modifications and equivalents that may be resorted to are intended to fall within the scope of the invention.
Claims (5)
1. High mound buckling restrained brace of bridge, including X type restraint skeleton, X type restraint skeleton comprises first mild steel board (11), second mild steel board (12) that middle part looks intersection and fixed connection are as an organic whole, characterized by: the X-shaped restraint framework is characterized in that outer connecting steel plates (20) and a group of first inner connecting steel plates (21) and second inner connecting steel plates (22) are respectively arranged on the two transverse sides of the X-shaped restraint framework, the inner ends of the first inner connecting steel plates (21) and the second inner connecting steel plates (22) are respectively hinged with the limb ends on the same side of the first soft steel plate (11) and the second soft steel plate (12), the outer ends of the first inner connecting steel plates and the second inner connecting steel plates are hinged with the inner ends of the outer connecting steel plates (20) on the same side to form a force transmission and energy consumption mechanism, and shape memory alloy springs (30) which directly or indirectly act on the X-shaped restraint framework to deform and reset are symmetrically arranged in the force transmission and energy consumption mechanism; the main body of the force transmission and energy consumption mechanism is packaged in a restraint steel box (40) for controlling longitudinal and transverse deformation of the force transmission and energy consumption mechanism, the middle part of an X-shaped restraint framework is welded with the front and rear plate surfaces of the restraint steel box (40), and the outer ends of the outer connecting steel plates (20) on the two sides extend out of the restraint steel box (40) to be connected with a bridge pier column.
2. The bridge high pier buckling restrained brace of claim 1, characterized by: shape memory alloy spring (30) bilateral symmetry sets up between X type restraint skeleton limb, corresponds welded connection otic placode (31) on first mild steel board (11), second mild steel board (12), and shape memory alloy spring (30) vertical extension, both ends and connection otic placode (31) fixed connection.
3. The bridge high pier buckling restrained brace of claim 1, characterized by: shape memory alloy spring (30) bilateral symmetry sets up between first in-connection steel sheet (21), second in-connection steel sheet (22), corresponds welding connection otic placode (31) on first in-connection steel sheet (21), second in-connection steel sheet (22), and shape memory alloy spring (30) vertical extension, both ends and connection otic placode (31) fixed connection.
4. The bridge high pier buckling restrained brace of claim 1, characterized by: shape memory alloy spring (30) horizontal symmetry sets up between first in-connection steel sheet (21), second in-connection steel sheet (22) and X type restraint skeleton, at X type restraint skeleton middle part welding reinforcing steel sheet (32), shape memory alloy spring (30) horizontal extension, inner and reinforcing steel sheet (32) fixed connection, the outer end is connected with the pin joint of first in-connection steel sheet (21), second in-connection steel sheet (22) and outer connection steel sheet (20).
5. The bridge high pier buckling restrained brace of claim 1, characterized by: the shape memory alloy springs (30) are symmetrically arranged between the limbs of the X-shaped constraint framework from top to bottom, the shape memory alloy springs (30) extend horizontally, and two ends of the shape memory alloy springs are connected with the X-shaped constraint framework and hinged points of the first inner connecting steel plate (21) and the second inner connecting steel plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111555710.7A CN114606854A (en) | 2021-12-17 | 2021-12-17 | Bridge high pier buckling-restrained brace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111555710.7A CN114606854A (en) | 2021-12-17 | 2021-12-17 | Bridge high pier buckling-restrained brace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114606854A true CN114606854A (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111555710.7A Pending CN114606854A (en) | 2021-12-17 | 2021-12-17 | Bridge high pier buckling-restrained brace |
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| Country | Link |
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| CN (1) | CN114606854A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002235380A (en) * | 2000-12-06 | 2002-08-23 | Shimizu Corp | Brace damper |
| CN201801974U (en) * | 2010-05-18 | 2011-04-20 | 陈云 | Friction hinge damper |
| JP3184182U (en) * | 2013-04-05 | 2013-06-13 | 新日鉄住金エンジニアリング株式会社 | Spherical tank support structure and cross brace |
| CN103306193A (en) * | 2013-06-15 | 2013-09-18 | 中南大学 | Vertical beam falling-off prevention system |
| CN107152098A (en) * | 2017-05-17 | 2017-09-12 | 大连大学 | It is classified shock-dampening method |
| CN109518825A (en) * | 2018-11-21 | 2019-03-26 | 大连大学 | X-type energy-dissipated brace device |
| CN109853770A (en) * | 2019-03-27 | 2019-06-07 | 长安大学 | A kind of Self-resetting bouble-bow is to drawing dual energy dissipation brace device |
| CN109853773A (en) * | 2019-04-12 | 2019-06-07 | 中国地震局工程力学研究所 | Multistage-compound anti-buckling support of multistage energy consumption and installation method |
| CN209429302U (en) * | 2018-11-21 | 2019-09-24 | 大连大学 | X-type energy-dissipated brace device |
| CN111733999A (en) * | 2020-07-13 | 2020-10-02 | 哈尔滨工业大学 | Built-in steel plate staggered through assembled X-shaped buckling-restrained brace |
| CN111809526A (en) * | 2020-07-30 | 2020-10-23 | 兰州理工大学 | Assembled bridge double-column pier system capable of recovering function after earthquake and construction method |
| CN113356668A (en) * | 2021-07-16 | 2021-09-07 | 辽宁工程技术大学 | Novel replaceable shear wall damping support |
-
2021
- 2021-12-17 CN CN202111555710.7A patent/CN114606854A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002235380A (en) * | 2000-12-06 | 2002-08-23 | Shimizu Corp | Brace damper |
| CN201801974U (en) * | 2010-05-18 | 2011-04-20 | 陈云 | Friction hinge damper |
| JP3184182U (en) * | 2013-04-05 | 2013-06-13 | 新日鉄住金エンジニアリング株式会社 | Spherical tank support structure and cross brace |
| CN103306193A (en) * | 2013-06-15 | 2013-09-18 | 中南大学 | Vertical beam falling-off prevention system |
| CN107152098A (en) * | 2017-05-17 | 2017-09-12 | 大连大学 | It is classified shock-dampening method |
| CN109518825A (en) * | 2018-11-21 | 2019-03-26 | 大连大学 | X-type energy-dissipated brace device |
| CN209429302U (en) * | 2018-11-21 | 2019-09-24 | 大连大学 | X-type energy-dissipated brace device |
| CN109853770A (en) * | 2019-03-27 | 2019-06-07 | 长安大学 | A kind of Self-resetting bouble-bow is to drawing dual energy dissipation brace device |
| CN109853773A (en) * | 2019-04-12 | 2019-06-07 | 中国地震局工程力学研究所 | Multistage-compound anti-buckling support of multistage energy consumption and installation method |
| CN111733999A (en) * | 2020-07-13 | 2020-10-02 | 哈尔滨工业大学 | Built-in steel plate staggered through assembled X-shaped buckling-restrained brace |
| CN111809526A (en) * | 2020-07-30 | 2020-10-23 | 兰州理工大学 | Assembled bridge double-column pier system capable of recovering function after earthquake and construction method |
| CN113356668A (en) * | 2021-07-16 | 2021-09-07 | 辽宁工程技术大学 | Novel replaceable shear wall damping support |
Non-Patent Citations (1)
| Title |
|---|
| 成晓奕;冯志杰;: "防屈曲支撑结构的专利技术发展概况" * |
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Application publication date: 20220610 |
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