CN114232459A - Curve bridge transverse limiting device based on steel stop blocks - Google Patents
Curve bridge transverse limiting device based on steel stop blocks Download PDFInfo
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- CN114232459A CN114232459A CN202111540773.5A CN202111540773A CN114232459A CN 114232459 A CN114232459 A CN 114232459A CN 202111540773 A CN202111540773 A CN 202111540773A CN 114232459 A CN114232459 A CN 114232459A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Abstract
The utility model belongs to the technical field of bridge deviation prevention, and particularly relates to a curve bridge transverse limiting device based on steel stop blocks. The utility model comprises an upper bottom plate and a lower bottom plate which are arranged in parallel; the bottom of the upper bottom plate is vertically provided with a plurality of steel baffle plates arranged at equal intervals, a trapezoidal plate is arranged between two adjacent steel baffle plates, the bottom end of the trapezoidal plate is vertically fixed on the upper surface of the lower bottom plate, and two sides of the top end of the trapezoidal plate are detachably connected with hemispherical force transfer keys which are in contact with the steel baffle plates; when a load acts on the bridge, the upper baffle plate and the lower bottom plate generate relative transverse displacement, the hemispherical force transmission key is used as a force transmission point, transverse dislocation occurs between the steel baffle plate and the trapezoidal plate, the bottom of the trapezoidal plate generates buckling deformation, and the buckling deformation of the trapezoidal plate consumes energy generated by the load to limit the displacement of the beam and the bridge pier. The utility model has better anti-deviation effect; can be repeatedly used or partially replaced, thereby greatly reducing the cost.
Description
Technical Field
The utility model belongs to the technical field of bridge deviation prevention, and particularly relates to a curve bridge transverse limiting device based on steel stop blocks.
Background
In China, with the continuous increase of traffic volume, the existing line and the bridge to which the existing line belongs are in an overload working state for a long time, wherein the deviation, especially the transverse deviation phenomenon of the bridge is particularly prominent, and the existing line and the bridge to which the existing line belongs are not concerned for a long time because the existing line and the bridge do not belong to large diseases in the traditional sense and diseases such as beam falling and the like are generally not caused in a short time, such as: many middle and small span bridges (especially curved continuous bridge bridges, which are most prone to girder body deflection) in China often have certain upper structure deviation diseases within decades of operation, and some conditions are serious, even the bridge is integrally collapsed. This results in a large number of small and medium span bridges not reaching the design service life and having to be scrapped and rebuilt. Or the bridge body is reset after generating larger transverse deviation, and the cost of the current limiting and correcting device is high. Must take certain measure to above-mentioned problem, current stop device all sets up horizontal or vertical baffle through the bar planting technique based on just dog or semi-rigid shaped steel, blocks the skew of roof beam body by force through the baffle, and this kind of deviation prevention measure is simple, effective, economy. But the method belongs to forced blocking type deviation prevention, which not only causes larger internal stress of the beam body, but also can cause damage to the bottom of the beam body or damage to the pier top and the cover beam top; in addition, some researchers change rigid deviation prevention into semi-rigid deviation prevention, and an elastic supporting facility is arranged on the side surface of a blocking measure, so that a beam body is not directly contacted with a deviation prevention block, the beam body can be well protected from being damaged by extrusion, but the structural measure is weak in strength and is generally only suitable for earthquake peak acceleration (Ag is less than or equal to 0.15g) areas.
The Chinese invention patent CN201721432298.9 discloses a limiting viscous damper, which is provided with a cylinder barrel, wherein a first end cover and a second end cover are embedded at two ends of the cylinder barrel, a piston is sleeved in the cylinder barrel, and two ends of the piston are respectively inserted into the outer parts of the first end cover and the second end cover; and a damping medium is filled in a gap between the piston and the cylinder barrel, and a limit pin is sleeved on the piston outside the second end cover. This spacing viscous damper makes the both ends of the piston of current viscous damper alternate respectively and set up with the outside of first end cover and second end cover, and convenient processing does benefit to batch production. And damping media are filled in a gap between the piston and the cylinder barrel, so that the damping effect of the damper is better realized. However, practice proves that the equipment can only limit displacement in one fixed direction, and once the equipment is not displaced in the assumed direction, the equipment can be sheared and damaged, so that the limit is invalid.
Chinese utility model patent CN202022103131.6 discloses a limit stop for bridge, including pier, bridge body and limit stop body, the pier upper end is provided with the bridge body, there is the supporting seat through bolted connection on the pier, the supporting seat with be provided with between the bridge body the limit stop body, this internal one side of limit stop bonds there is the shock pad, there is damping spring shock pad one side through bolted connection, the welding of damping spring one side has the supporting shoe, the supporting shoe with the bridge body passes through the draw-in groove and connects. Has the advantages that: according to the utility model, the shock absorption function of the limit stop body can be improved by arranging the shock absorption pad, the shock absorption spring and the supporting block, so that the shock to the bridge body caused by passing of pedestrians and vehicles is reduced, the bridge body can be effectively and stably supported, and the use effect is improved. But the repairability is very low, namely after the bridge generates larger displacement, the device can not continue the repairing work after playing a role once.
Disclosure of Invention
The utility model aims to solve the problems and provides an elastic-plastic curve bridge transverse limiting device based on steel stoppers, which can effectively limit the transverse displacement of a bridge and is easy to replace.
The utility model is realized by adopting the following technical scheme: a curve bridge transverse limiting device based on a steel stop block comprises an upper bottom plate and a lower bottom plate which are arranged in parallel; the bottom of the upper bottom plate is vertically provided with a plurality of steel baffle plates arranged at equal intervals, a trapezoidal plate is arranged between two adjacent steel baffle plates, the bottom end of the trapezoidal plate is vertically fixed on the upper surface of the lower bottom plate, and two sides of the top end of the trapezoidal plate are detachably connected with hemispherical force transfer keys which are in contact with the steel baffle plates; when a load acts on the bridge, the upper baffle plate and the lower bottom plate generate relative transverse displacement, the hemispherical force transmission key is used as a force transmission point, transverse dislocation occurs between the steel baffle plate and the trapezoidal plate, the bottom of the trapezoidal plate generates buckling deformation, and the buckling deformation of the trapezoidal plate consumes energy generated by the load to limit the displacement of the beam and the bridge pier.
Furthermore, polytetrafluoroethylene sliding plates are bonded on two sides of the steel baffle, and the hemispherical force transmission key is in contact with the polytetrafluoroethylene sliding plates.
Furthermore, the sectional dimension and the thickness of the steel baffle plate are both larger than those of the trapezoidal plate.
Furthermore, the top end of the trapezoidal plate is provided with a connecting hole;
the hemisphere of trapezoidal plate both sides passes power key and is the hemispherical structure, is located the hemisphere of trapezoidal plate one side and passes to be equipped with the threaded rod on the power key, is located the hemisphere of trapezoidal plate opposite side and passes to be equipped with the screw hole on the power key, and the threaded rod passes connecting hole in screw hole threaded connection.
Furthermore, the upper base plate is a high-strength rectangular steel plate and is fixed on the lower surface of the box girder through bolts.
Furthermore, the lower bottom plate is a rectangular steel plate and is fixed on the upper surface of the cover beam through bolts.
Furthermore, the steel baffle is a rectangular steel plate and is vertically welded at the bottom of the upper bottom plate.
Furthermore, the distance between two adjacent steel baffles is 80-100 mm.
Furthermore, the maximum transverse limiting force Pu that the bridge can bear is 2 times greater than the maximum load Pa of the device.
Compared with the prior art, the utility model has the beneficial effects that:
1. the device adopts the hemispherical force transmission key as a force transmission point, can adapt to the transverse complex deformation of the main beam, and ensures that a force transmission path of the transverse limiting device is clear under the action of external force; the main beam structure inertia force is transmitted to the top of the trapezoidal plate through the steel baffle and the hemispherical force transmission key, so that the trapezoidal plate is bent to consume energy, the load-deformation curve can better meet the structural stress requirement to limit the displacement of the beam and the pier, the anti-sliding effect is generated on the bridge, the safety of the bridge structure is ensured, the sliding of the beam body and the energy consumption and shock absorption of the steel baffle are allowed when various effects occur, and the anti-deviation effect is better;
2. the upper bottom plate and the lower bottom plate of the device are detachably connected to a bridge, the hemispherical force transmission key is detachably connected to the trapezoidal plate, and when the device is damaged due to large deformation of the whole bridge, the upper side beam can be jacked up by the jack, and the hemispherical force transmission key is replaced; the trapezoidal plate with the bent lower side can be righted or the lower structure (the trapezoidal plate and the lower bottom plate) can be replaced to restore the normal use function of the steel stop block, and the steel stop block can be continuously used as the stop block to bear the external deviation rectifying load and can be repeatedly used or partially replaced, so that the cost is greatly reduced, and the steel stop block has strong repairability and replaceability;
3. the device has simple integral structure, easy replacement and maintenance and good stress performance, the load-deformation curve can better meet the stress requirement of the structure, and the elastic-plastic mechanism can also reduce the damage to the self structure when the bridge transversely displaces.
Drawings
FIG. 1 is a schematic three-dimensional view of the present application;
FIG. 2 is a side view of the present application;
FIG. 3 is a top view of the present application;
FIG. 4 is a schematic view of the connection of two hemispherical force-transmitting keys of the present application;
FIG. 5 is a schematic view of the present application in connection with a bridge;
FIG. 6 is a load-slip curve of example 1;
FIG. 7 is the horizontal displacement results of the finite element simulation analysis of example 1;
FIG. 8 is a buckling stress result of the finite element simulation analysis of example 1;
FIG. 9 is the results of contact surface stresses from finite element simulation analysis of example 1;
FIG. 10 is a load-slip curve of example 2;
FIG. 11 is the horizontal displacement results of the finite element simulation analysis of example 2;
FIG. 12 is the buckling stress results of the finite element simulation analysis of example 2;
FIG. 13 is the results of contact surface stresses from finite element simulation analysis of example 2;
in the figure: 1-upper bottom plate, 2-lower bottom plate, 3-steel baffle, 4-trapezoidal plate, 5-hemispherical force transmission key, 6-bolt, 7-polytetrafluoroethylene sliding plate, 8-threaded rod, 9-threaded hole, 10-box beam, 11-bridge support and 12-cover beam.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: a curve bridge transverse limiting device based on a steel stop block comprises an upper bottom plate 1 and a lower bottom plate 2 which are arranged in parallel; a plurality of steel baffles 3 arranged at equal intervals are vertically arranged at the bottom of the upper bottom plate 1, a trapezoidal plate 4 is arranged between two adjacent steel baffles 3, the bottom end of the trapezoidal plate 4 is vertically fixed on the upper surface of the lower bottom plate 2, hemispherical force transfer keys 5 are detachably connected to two sides of the top end of the trapezoidal plate 4, and the hemispherical force transfer keys 5 are in contact with the steel baffles 3; when a load acts on a bridge, the box girder 10 and the cover girder 12 generate relative transverse displacement, the upper baffle 1 and the lower baffle 2 generate relative transverse displacement, the hemispherical force transmission key 5 is used as a force transmission point, transverse dislocation occurs between the steel baffle 3 and the trapezoidal plate 4, the whole hemispherical force transmission key 5 is restrained between the two steel baffles 3, the steel baffles 3 limit the transverse displacement of the hemispherical force transmission key 5, so that buckling deformation is generated at the bottom of the trapezoidal plate 4, the buckling deformation of the trapezoidal plate 4 consumes energy generated by the load, and a load-deformation curve of the trapezoidal plate can better meet the structural stress requirement so as to limit the displacement of the girder and a pier, so that the anti-sliding effect is generated on the bridge, and the safety of the bridge structure is ensured.
The cross sectional dimension and the thickness of steel baffle 3 all are greater than trapezoidal plate 4's cross sectional dimension and thickness, and the hemisphere on trapezoidal plate 4 passes power key 5 can effectively restrict superstructure namely upper plate 1, steel baffle 3 and substructure namely trapezoidal plate 4, the lateral displacement of lower plate 2, and the lifting surface area and the rigidity of steel baffle 3 are greater than trapezoidal plate 4 for steel baffle 3 has enough rigidity and lifting surface area, and the less trapezoidal plate 4 of rigidity can produce the buckling deformation, plays horizontal limiting displacement.
The top end of the trapezoidal plate 4 is provided with a connecting hole;
the hemispherical force transmission keys 5 on the two sides of the trapezoidal plate 4 are of hemispherical structures, a threaded rod 8 is arranged on the hemispherical force transmission key 5 on one side of the trapezoidal plate 4, a threaded hole 9 is arranged on the hemispherical force transmission key 5 on the other side of the trapezoidal plate 4, and the threaded rod 8 penetrates through the connecting hole to be in threaded connection with the threaded hole 9; when the beam and the pier are deformed greatly or the device is damaged, the box beam 10 can be jacked up from the cover beam 12, so that the steel baffle 3 is separated from the hemispherical force transmission key 5, and the hemispherical force transmission key 5, the trapezoidal plate 4 or the whole device is replaced to recover the limiting effect of the device.
The upper base plate 1 is a high-strength rectangular steel plate, and the upper base plate 1 is fixed on the lower surface of the box girder 10 through bolts 6.
The lower bottom plate 2 is a rectangular steel plate, and the lower bottom plate 2 is fixed on the upper surface of the cover beam 12 through bolts 6.
The steel baffle 3 is a rectangular steel plate, and the steel baffle 3 is vertically welded at the bottom of the upper bottom plate 1.
Two adjacent steel baffle 3's interval is 80 ~ 100mm, can satisfy the construction of high strength bolt and can guarantee that the downside steel sheet does not take place to bend and destroy.
The maximum transverse limiting force Pu which can be borne by the bridge is 2 times larger than the maximum load Pa of the device; therefore, aiming at different spans, different sizes (such as curvature radius of the bridge and size of a curved beam) and bridges with different masses, and different transverse forces and transverse displacements generated under various actions (different seismic intensity), the thicknesses and the quantities of the steel baffle plates 3 and the trapezoidal plates 4 and the lengths and the thicknesses of the upper bottom plate 1 and the lower bottom plate 2 can be properly adjusted according to different actual conditions, and the safety of the bridges is ensured. Specifically, the number and the thickness of a steel stop block 3 and a trapezoidal plate 4 are firstly simulated by experience, then, ANSYS finite element simulation software is adopted to perform mechanical calculation on a horizontal limiting device with a preset size, and the horizontal deformation and the stress distribution of the device under the action of an external force load are analyzed to obtain a device load-slip curve; extracting the maximum load Pa before the yield of the steel; through the maximum transverse limiting force Pu that information analysis bridges such as bridge span can bear, and can satisfy Pa < Pu/2, the quantity and the steel sheet thickness of the steel dog and the trapezoidal plate of then selection this moment can satisfy the transverse limiting demand of this bridge. Otherwise, the number of the steel stop blocks and the trapezoidal plates and the thickness of the steel plate need to be further increased until Pa < Pu/2 can be met, and the number of the steel stop blocks and the trapezoidal plates and the thickness of the steel plate are parameters required by the bridge stop block.
The following are two specific embodiments of the utility model, and the difference between embodiment 1 and embodiment 2 is that the number of the steel baffles and the number of the trapezoidal plates are different, in embodiment 1, the number of the steel baffles is 4, the number of the trapezoidal plates is 3, and the maximum horizontal load which can be borne is 170 kN; in the embodiment 2, the number of the steel baffles is 5, the number of the trapezoidal plates is 4, and the maximum horizontal load which can be borne is 200 kN; the concrete embodiments 1 and 2 of the utility model can be applied to bridges with different spans and transverse limiting force sizes, and more steel baffles and trapezoidal plates can be selected for bridges with larger transverse limiting force. The specific description of example 1 and example 2 is as follows:
example 1, as shown in fig. 6-9: Q345-E steel is selected as the limiting device, the upper bottom plate and the lower bottom plate are rectangular, the length is 550-650 mm, the width is 350-450 mm, the thickness is 20-30 mm, the length of the steel baffle plate can be set to be 350-450 mm, the width is 150-250 mm, the thickness is 20-30 mm, the height of the trapezoidal plate is 300-350 mm, the width of the bottom edge is 350-400 mm, the width of the top edge is 150-200 mm, the thickness is 20-30 mm, the number of the steel baffle plates is 4, and the number of the trapezoidal plates is 3;
and establishing a three-dimensional entity model by using finite element simulation software ANSYS, analyzing the stress distribution condition and the displacement value of the steel plate under the action of horizontal transverse limit load, calculating to obtain a load-slip curve, and verifying that the stress result of each part meets the yield strength characteristic of the steel. The load-slip curve diagram and the finite element stress cloud chart of example 1 are shown in fig. 5-6;
through analysis, the external force of the linear elastic stage is 170 kN, and the corresponding displacement is 8.8 mm; thereafter, the buckling failure of the lower trapezoidal plate occurs, so that the external force applied thereto is slowly increased, but the deformation continues to be rapidly increased. The maximum horizontal displacement is 24 mm when the horizontal force applied is 192 kN.
Example 2, as shown in fig. 10-13: : the upper bottom plate and the lower bottom plate of the limiting device are rectangular, the length of the upper bottom plate and the lower bottom plate is 650-750 mm, the width of the upper bottom plate and the lower bottom plate is 350-450 mm, the thickness of the upper bottom plate and the width of the lower bottom plate are 20-450 mm, the length of the steel baffle plate is 350-450 mm, the width of the steel baffle plate is 150-250 mm, the thickness of the steel baffle plate is 20-30 mm, the height of the trapezoidal plate is 300-350 mm, the width of the bottom edge of the trapezoidal plate is 350-400 mm, the width of the top edge of the trapezoidal plate is 150-200 mm, the thickness of the trapezoidal plate is 20-30 mm, the number of the steel baffles of the first device is 5, and the number of the trapezoidal plates is 4;
and establishing a three-dimensional entity model by using finite element simulation software ANSYS, analyzing the stress distribution condition and the displacement value of the corresponding part under the action of horizontal limit load, obtaining a load-slip curve, and verifying that the stress result of each part meets the yield strength characteristic of the steel. The load-slip curve diagram and the stress cloud chart are shown in figures 7-8;
through analysis, the external force of the linear elastic stage is 200 kN, and the corresponding displacement is 7.6 mm; thereafter, buckling failure of the lower trapezoidal plate occurs, so that the external force applied thereto increases slowly, but the deformation continues to increase rapidly. When the horizontal force is 260 kN, the maximum horizontal displacement is 31.2 mm, the force turning point of the elastic stage and the plastic stage is 196 kN, and the maximum applied force of the elastic stage can be 140 kN.
The application process of the application comprises the following steps:
1: according to the design experience of the existing bridge, the sizes of an upper bottom plate 1 and a lower bottom plate 2 of a limiting device and the size of a steel baffle 3, the height of a trapezoidal plate 4, the width of the bottom edge, the width of the top edge and the thickness of the top edge are determined; the size and the thickness of the steel baffles 3 are larger than those of the trapezoidal plates 4, and the number of the steel baffles 3 is 1 more than that of the trapezoidal plates 4;
2: establishing a refined three-dimensional entity model by using finite element simulation software, analyzing the stress distribution condition and the displacement value of the corresponding part under the action of load, obtaining a load-slip curve, verifying that the stress result of each part meets the yield strength characteristic of steel, and obtaining the external force and the corresponding displacement in the linear elastic stage through analysis; the buckling failure stress range of the lower trapezoidal plate 4 is analyzed, and the obtained buckling stress meets the stress requirement of selecting steel;
3: according to the calculation and analysis result, corresponding to the inertia force or displacement generated by bridges of different sizes under different transverse load effects or earthquake effects in actual engineering, verifying whether the upper bottom plate 1 and the lower bottom plate 2 which are selected in the prior art and a proper number of steel baffle plates 3 and trapezoidal plates 4 are proper or not, and if not, properly adjusting the sizes to meet the stress requirements;
4: manufacturing a transverse limiting device by a factory according to the specific size obtained by the finite element calculation result, and installing the device at the corresponding position of the bridge;
5: if the transverse limiting device is damaged, jacking equipment such as a jack is utilized to jack the beam body aiming at the damaged condition, the upper structure (namely the upper bottom plate 1 and the steel baffle plate 3) and the lower structure of the transverse limiting device are separated (namely the trapezoidal plate 4 and the lower bottom plate 2), the hemispherical force transmission key 5 can be unscrewed at the moment, the trapezoidal plate 4 is separated, the new hemispherical force transmission key 5 is replaced, or the bolt of the lower bottom plate 4 is unscrewed, the whole lower structure is replaced, the jacking equipment is withdrawn, and the limiting device continues to play a role.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a horizontal stop device of curve bridge based on steel dog which characterized in that: comprises an upper bottom plate (1) and a lower bottom plate (2) which are arranged in parallel; the bottom of the upper bottom plate (1) is vertically provided with a plurality of steel baffle plates (3) which are arranged at equal intervals, a trapezoidal plate (4) is arranged between two adjacent steel baffle plates (3), the bottom end of the trapezoidal plate (4) is vertically fixed on the upper surface of the lower bottom plate (2), two sides of the top end of the trapezoidal plate (4) are detachably connected with hemispherical force transfer keys (5), and the hemispherical force transfer keys (5) are in contact with the steel baffle plates (3); when a load acts on a bridge, the upper baffle (1) and the lower bottom plate (2) generate relative transverse displacement, the hemispherical force transmission key (5) is used as a force transmission point, transverse dislocation occurs between the steel baffle (3) and the trapezoidal plate (4), so that buckling deformation is generated at the bottom of the trapezoidal plate (4), and the buckling deformation of the trapezoidal plate (4) consumes energy generated by the load to limit the displacement of the beam and the bridge pier.
2. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 1, wherein: polytetrafluoroethylene sliding plates (7) are bonded on two sides of the steel baffle (3), and the hemispherical force transmission keys (5) are in contact with the polytetrafluoroethylene sliding plates (7).
3. The lateral curved bridge limiting device based on the steel stoppers as claimed in claim 1 or 2, wherein: the sectional dimension and the thickness of the steel baffle plate (3) are both larger than those of the trapezoidal plate (4).
4. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 3, wherein: the top end of the trapezoidal plate (4) is provided with a connecting hole;
the hemisphere of trapezoidal plate (4) both sides passes power key (5) and is hemispherical structure, is located and is equipped with threaded rod (8) on the hemisphere of trapezoidal plate (4) one side passes power key (5), is located and is equipped with screw hole (9) on the hemisphere of trapezoidal plate (4) opposite side passes power key (5), and threaded rod (8) pass the connecting hole in screw hole (9) threaded connection.
5. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 4, wherein: the upper base plate (1) is a high-strength rectangular steel plate, and the upper base plate (1) is fixed on the lower surface of the box girder (10) through bolts (6).
6. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 5, wherein: the lower bottom plate (2) is a rectangular steel plate, and the lower bottom plate (2) is fixed on the upper surface of the cover beam (12) through bolts (6).
7. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 6, wherein: the steel baffle plate (3) is a rectangular steel plate, and the steel baffle plate (3) is vertically welded at the bottom of the upper base plate (1).
8. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 7, wherein: the distance between two adjacent steel baffles (3) is 80-100 mm.
9. The curved bridge transverse limiting device based on the steel stopper as claimed in claim 8, wherein: the maximum transverse limiting force Pu that the bridge can bear is 2 times greater than the maximum load Pa of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111540773.5A CN114232459A (en) | 2021-12-16 | 2021-12-16 | Curve bridge transverse limiting device based on steel stop blocks |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111540773.5A CN114232459A (en) | 2021-12-16 | 2021-12-16 | Curve bridge transverse limiting device based on steel stop blocks |
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| CN114232459A true CN114232459A (en) | 2022-03-25 |
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| CN202111540773.5A Pending CN114232459A (en) | 2021-12-16 | 2021-12-16 | Curve bridge transverse limiting device based on steel stop blocks |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953327A (en) * | 2012-11-15 | 2013-03-06 | 同济大学 | Lateral shock absorption damper suitable for bridge structure |
| CN206438384U (en) * | 2016-12-16 | 2017-08-25 | 同济大学 | A kind of horizontal shock-absorbing construction for being applied to conventional beam bridge |
| CN215165290U (en) * | 2021-03-30 | 2021-12-14 | 河海大学 | Metal damping device with limiting capacity for navigation aqueduct structure |
-
2021
- 2021-12-16 CN CN202111540773.5A patent/CN114232459A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953327A (en) * | 2012-11-15 | 2013-03-06 | 同济大学 | Lateral shock absorption damper suitable for bridge structure |
| CN206438384U (en) * | 2016-12-16 | 2017-08-25 | 同济大学 | A kind of horizontal shock-absorbing construction for being applied to conventional beam bridge |
| CN215165290U (en) * | 2021-03-30 | 2021-12-14 | 河海大学 | Metal damping device with limiting capacity for navigation aqueduct structure |
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