CN111411574A - Self-recovery damper capable of self-eliminating temperature effect - Google Patents
Self-recovery damper capable of self-eliminating temperature effect Download PDFInfo
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- CN111411574A CN111411574A CN202010048804.4A CN202010048804A CN111411574A CN 111411574 A CN111411574 A CN 111411574A CN 202010048804 A CN202010048804 A CN 202010048804A CN 111411574 A CN111411574 A CN 111411574A
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- damper
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- 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
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- Bridges Or Land Bridges (AREA)
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Abstract
The invention discloses a self-recovery damper capable of eliminating temperature effect by self, which comprises a damper (5) and a steel wire rope (5.10) arranged in the damper (5); the two ends of the damper (5) are respectively provided with a spherical hinged support (5.1), one end of the spherical hinged support (5.1) positioned at the left end is cast and connected with the piston rod (5.2) into a whole through a tail end horseshoe (5.8), and the other end of the spherical hinged support (5.1) positioned at the right end is cast and connected with the head and the seal (5.3) arranged at the front end into a whole through the tail end horseshoe (5.8); the device overcomes the defect that the beam body cannot be automatically reset after displacement in the prior art; the damper has the advantages that the steel wire rope is positioned in the damper, the damper is a natural protective sleeve of the steel wire rope, and any protective measure is not required to be additionally arranged.
Description
Technical Field
The invention relates to the technical field of dampers used by steel components in building structures, in particular to a self-recovery damper capable of eliminating temperature effects.
Background
The piston of the traditional viscous damper can do linear reciprocating motion in the cylinder body, and a small damping hole is formed in the piston. When the piston rod pushes the piston and the cylinder body to move relatively under the action of structural deformation, the reciprocating motion of the piston drives the internal medium to flow, and internal friction force is generated among molecules and further converted into heat energy; in addition, the friction force between the internal fluid and the surface of the solid cylinder body is converted into heat energy, so that the seismic energy is converted into molecular heat energy, the damping effect is further generated, and the purpose of energy consumption is achieved.
Damping force F-CV of traditional viscous damperαThe damping force generated by the F-damper, the V-structure relative velocity, the C-damping coefficient, and α -velocity indexThe damping force will cause the velocity of the structure to gradually decrease until the velocity is zero, effectively reducing the total displacement of the structure. However, as the structural speed gradually decreases, the damping force of the damper also gradually decreases, and when the structural speed is zero, the damping force of the damper also correspondingly decreases to zero, and at this time, a certain relative deformation often occurs between two structural members connecting the damper, and the deformation is an unrecoverable deformation.
This irreversible deformation in the building structure often causes the structure to be asymmetric, causing the structure to be displaced from a central position for a long time, thereby generating additional internal forces, and even long-term deformation can affect the durability of some components.
The prior patent is as follows: an old bridge antidetonation is reformed transform with self-resuming attenuator application number: 201420603754.1, respectively; the self-restoring dampers used in some structures at present are all provided with springs in the dampers, the self-restoring force of the dampers is generated by utilizing the elasticity of the springs, but the built-in spring dampers can generate repeatedly changed internal force under repeatedly changed temperature load, so that the durability of the built-in spring dampers is greatly reduced.
Therefore, a structure for solving the above problems is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provides a self-recovery damper capable of eliminating the temperature effect.
The purpose of the invention is implemented by the following technical scheme: a self-recovery damper for self-eliminating temperature effect comprises a damper and a steel wire rope arranged in the damper; the damper is characterized in that spherical hinged supports are arranged at two ends of the damper, one end of each spherical hinged support at the left end is cast and connected with the piston rod into a whole through a tail end horseshoe, and the other end of each spherical hinged support at the right end is cast and connected with a head and a seal arranged at the front end into a whole through a tail end horseshoe;
the left ends of the upper outer wall and the lower outer wall are provided with a head part and a seal, an oil cavity is arranged between the upper outer wall and the lower outer wall, two pistons capable of doing left and right strokes are arranged in the oil cavity, and a circular oil hole is arranged in each piston;
one end of the piston rod penetrates through the head and the seal arranged at the left end and sequentially penetrates through the piston and extends into the head and the seal arranged at the right end;
the spherical hinged support arranged at the left end is sleeved with a steel wire rope, the horseshoe at the tail end, the piston rod, the head arranged at the right end and the seal are all provided with steel wire rope preformed holes,
the steel wire rope sequentially penetrates through the tail end horseshoe arranged at the left end, the head arranged at the left end, the seal, the piston rod, the head arranged at the right end, the seal and the tail end horseshoe arranged at the right end until the seal is arranged at the right end, and the other end of the steel wire rope is sleeved on the spherical hinged support arranged at the right end. In the above technical scheme: the upper end of each damper is connected with the anchoring block through the damper on the main beam and fixed with the steel beam, and the lower end of each damper is connected with the anchoring block through the damper on the pier and fixed with the pier at the symmetrical center of the beam span.
In the above technical scheme: the tail end horseshoe, the head, the seal and the piston rod are all made of steel members, and the steel wire rope can be made of parallel steel wire bundles.
The invention has the following advantages: 1. the steel wire rope is additionally arranged on the damper, so that when relative displacement is generated on a component connected with the damper due to loads such as earthquake, wind, vehicle running and the like, elastic restoring force KX is immediately generated, the elastic restoring force enables the component to be at an initial ideal position capable of being quickly restored, the adverse problems of asymmetry, eccentricity, long-time deformation and the like caused by structural displacement are avoided, the stress state of the structure is improved, and the durability of the structure is improved.
2. In the invention, the damper is placed at the pier position at the longitudinal symmetrical center of the full-bridge structure, the connecting member is a steel member, the steel member and the steel wire rope are made of steel materials, the thermal expansion coefficients are equal, and under the action of temperature, the elongation of the steel member and the steel wire rope during heating or the shortening of the steel member and the steel wire rope during cooling are the same, so that the damper does not generate any additional acting force under the action of temperature, the main structure cannot increase the structural burden due to the repeatedly changed internal force generated by repeatedly heating and cooling the external environment, and the damper cannot generate the repeatedly changed internal force due to repeatedly heating and cooling the external environment, thereby increasing the durability of the damper.
3. The steel wire rope is positioned in the damper, the damper is a natural protective sleeve of the steel wire rope, the steel wire rope is isolated from external pollutants, any special steel wire rope protective measures are not needed, the regular protective work of the steel wire rope is avoided, and the steel wire rope is effectively protected.
Drawings
Fig. 1 is a schematic view of the installation position of a damper in a bridge structure according to the present invention.
Fig. 2 is a schematic view of a damper configuration.
In the figure: the steel beam comprises a steel beam 1, a bridge pier 2 at the symmetrical center of the beam span, a damper connecting anchor block 3 on the main beam, a damper connecting anchor block 4 on the bridge pier, a damper 5, a spherical hinge seat 5.1, a piston rod 5.2, a head and seal 5.3, a piston 5.4, an oil hole 5.5, an oil cavity 5.6, an outer wall 5.7, a tail end horseshoe 5.8, a steel wire rope preformed hole 5.9 and a steel wire rope 5.10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to FIGS. 1-2: a self-recovery damper for self-eliminating temperature effect comprises a damper 5 and a steel wire rope 5.10 arranged in the damper 5; the two ends of the damper 5 are respectively provided with a spherical hinged support 5.1, one end of the spherical hinged support 5.1 positioned at the left end is cast and connected with a piston rod 5.2 into a whole through a tail end horseshoe 5.8, and the other end of the spherical hinged support 5.1 positioned at the right end is cast and connected with a head part and a seal 5.3 arranged at the front end through the tail end horseshoe 5.8 into a whole;
the left end of the upper outer wall 5.7 and the lower outer wall 5.7 are provided with a head part and a seal 5.3, an oil cavity 5.6 is arranged between the upper outer wall 5.7 and the lower outer wall 5.7, two pistons 5.4 capable of making left and right strokes are arranged in the oil cavity 5.6, and each piston 5.4 is internally provided with a circular oil hole 5;
one end of the piston rod 5.2 penetrates through the head and the seal 5.3 arranged at the left end to extend into the piston 5.4 and sequentially penetrates into the head and the seal 5.3 arranged at the right end;
a steel wire rope 5.10 is sleeved on the spherical hinged support 5.1 arranged at the left end, a steel wire rope preformed hole 5.9 is reserved on the tail end horseshoe 5.8, the piston rod 5.2, the head arranged at the right end and the seal 5.3,
wire rope 5.10 run through terminal horseshoe 5.8 that the left end set up in proper order, the head that the left end set up and seal 5.3, piston rod 5.2, the head that the right-hand member set up and seal 5.3 and the terminal horseshoe 5.8 that the right-hand member set up until the cover establish the right-hand member setting wire rope 5.10's the other pot head establish be located the ball-type free bearing 5.1 that the right-hand member set up.
Two dampers 5 which are bilaterally symmetrical are arranged between the steel beam 1 and the bridge pier 2 at the position of the bridge span symmetrical center, the two dampers 5 are arranged at the left end and the right end of the bridge pier 2 at the position of the bridge span symmetrical center, the upper end of each damper 5 is connected with the anchoring block 3 through the damper on the main beam to be fixed with the steel beam 1, and the lower end of each damper 5 is connected with the anchoring block 4 through the damper on the bridge pier to be fixed with the bridge pier 2 at the position of the bridge span symmetrical center.
Because 2 positions of pier are the symmetric center of girder, so when external environment goes up and down the temperature, girder steel 1 is just so flexible to both sides with this position as the central point, wire rope 5.10 also changes with this 2 positions of pier as the central point along with ambient temperature and stretches out and draws back to both sides, because girder steel 1 and wire rope 5.10 are the same at the flexible volume when going up and down the temperature the same completely, so both can freely stretch out and draw back, both do not retrain each other, under temperature load, the attenuator can not be to the additional internal force of structure, the structure can not produce the internal force to the attenuator yet, temperature change can not cause the burden to structure and attenuator promptly.
The tail end horseshoe 5.8, the head part, the seal 5.3 and the piston rod 5.2 are all made of steel members, the steel wire rope 5.10 can be made of a steel wire rope or a parallel steel wire bundle, and the steel wire rope and the parallel steel wire bundle can be made of the steel wire rope or the parallel steel wire bundle without obvious difference.
The working principle of the invention is that the damping force F of the traditional viscous damper is CVαThe damping force of the damper is gradually reduced along with the gradual reduction of the structure speed, the damping force of the damper is correspondingly reduced to zero when the structure speed is zero, and at the moment, certain relative deformation is generated between two structural components which are connected with the damper, and the deformation is unrecoverable deformation.
The steel wire rope 5.10 is additionally arranged in the damper, and the force generated by the damper is changed into F ═ CVα+ KX, X are the displacement that girder steel 1 that takes place the displacement takes place for pier 2 that is fixed relatively, and like this when there is the displacement between girder steel 1 and pier 2, the attenuator just produces elastic restoring force F ═ KX, and elastic restoring force drags girder steel 1 to resume the normal position, and until the relative displacement X between girder steel 1 and pier 2 becomes 0, namely girder steel 1 resumes to the initial position, and the elastic restoring force of attenuator also becomes 0, and the girder stops in the normal position promptly.
Referring to FIG. 1: the specific working process of the invention is as follows: when the steel beam 1 is displaced leftwards relative to the pier 2, the tail end horseshoes 5.8 arranged at the left end and the right end in the single left end damper 5 in the figure 1 move mutually and are gradually separated from each other, the steel wire rope 5.10 in the single left end damper 5 extends to generate restoring force, at the moment, the tail end horseshoes 5.8 arranged at the left end and the right end in the single right end damper 5 move mutually and are close to each other, the steel wire rope 5.10 in the single right end damper 5 is loosened, and the steel wire rope exits from working.
On the contrary, when the steel beam 1 is displaced rightwards relative to the pier 2, the tail end horseshoes 5.8 arranged at the left end and the right end in the single right end damper 5 in the figure 1 move mutually and are gradually separated from each other, the steel wire rope 5.10 in the single right end damper 5 is stretched to generate restoring force, at the moment, the tail end horseshoes 5.8 arranged at the left end and the right end in the single left end damper 5 move mutually and are close to each other, the steel wire rope 5.10 in the single left end damper 5 is loosened, and the steel wire rope exits from the work.
The above-mentioned parts not described in detail are prior art.
Claims (3)
1. A self-healing damper that self-eliminates temperature effects, comprising: the damper comprises a damper (5) and a steel wire rope (5.10) arranged in the damper (5);
both ends of the damper (5) are provided with spherical hinged supports (5.1), one end of the spherical hinged support (5.1) positioned at the left end is cast and connected with a piston rod (5.2) into a whole through a tail end horseshoe (5.8),
the other end of the spherical hinged support (5.1) at the right end is cast and connected with the head and the seal (5.3) arranged at the front end into a whole through a tail horseshoe (5.8);
the left end of the upper outer wall (5.7) and the lower outer wall (5.7) is provided with a head part and a seal (5.3), an oil cavity (5.6) is arranged between the upper outer wall and the lower outer wall (5.7), two pistons (5.4) capable of making left and right strokes are arranged in the oil cavity (5.6), and each piston (5.4) is internally provided with a circular oil hole (5);
one end of the piston rod (5.2) penetrates through the head and the seal (5.3) arranged at the left end and extends into the piston (5.4) in sequence and extends into the head and the seal (5.3) arranged at the right end;
a steel wire rope (5.10) is sleeved on the spherical hinged support (5.1) arranged at the left end, a steel wire rope preformed hole (5.9) is reserved on the tail end horseshoe (5.8), the piston rod (5.2) and the head and the seal (5.3) arranged at the right end,
the steel wire rope (5.10) sequentially penetrates through the tail end horseshoe (5.8) arranged at the left end, the head arranged at the left end, the seal (5.3), the piston rod (5.2), the head arranged at the right end, the seal (5.3) and the tail end horseshoe (5.8) arranged at the right end until the sleeve is sleeved on the tail end horseshoe (5.8) arranged at the right end
The other end of the steel wire rope (5.10) is sleeved on a spherical hinged support (5.1) arranged at the right end.
2. A self-healing damper that self-eliminates temperature effects as defined in claim 1, wherein: two dampers (5) which are bilaterally symmetrical are arranged between the steel beam (1) and the bridge pier (2) at the symmetrical center of the beam span, the two dampers (5) are arranged at the left end and the right end of the bridge pier (2) at the symmetrical center of the beam span, the upper end of each damper (5) is connected with the anchoring block (3) through the damper on the main beam and fixed with the steel beam (1), and the lower end of each damper is connected with the anchoring block (4) through the damper on the bridge pier and fixed with the bridge pier (2) at the symmetrical center of the beam span.
3. A self-healing damper that self-eliminates temperature effects according to claim 1 or 2, wherein: the tail end horseshoe (5.8), the head part, the seal (5.3) and the piston rod (5.2) are all made of steel members, and the steel wire rope (5.10) can be made of parallel steel wire bundles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010048804.4A CN111411574A (en) | 2020-01-16 | 2020-01-16 | Self-recovery damper capable of self-eliminating temperature effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010048804.4A CN111411574A (en) | 2020-01-16 | 2020-01-16 | Self-recovery damper capable of self-eliminating temperature effect |
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| Publication Number | Publication Date |
|---|---|
| CN111411574A true CN111411574A (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010048804.4A Pending CN111411574A (en) | 2020-01-16 | 2020-01-16 | Self-recovery damper capable of self-eliminating temperature effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948976A (en) * | 2022-12-19 | 2023-04-11 | 中交公路规划设计院有限公司 | Longitudinal combination toughness constraint system and method for large-span suspension bridge |
-
2020
- 2020-01-16 CN CN202010048804.4A patent/CN111411574A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115948976A (en) * | 2022-12-19 | 2023-04-11 | 中交公路规划设计院有限公司 | Longitudinal combination toughness constraint system and method for large-span suspension bridge |
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