CN110055879B - Beam falling prevention device with unidirectional energy consumption - Google Patents
Beam falling prevention device with unidirectional energy consumption Download PDFInfo
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- CN110055879B CN110055879B CN201910470561.0A CN201910470561A CN110055879B CN 110055879 B CN110055879 B CN 110055879B CN 201910470561 A CN201910470561 A CN 201910470561A CN 110055879 B CN110055879 B CN 110055879B
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- 230000002265 prevention Effects 0.000 title claims abstract description 35
- 238000005265 energy consumption Methods 0.000 title abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000000670 limiting effect Effects 0.000 abstract description 15
- 230000002457 bidirectional effect Effects 0.000 abstract description 6
- 238000013016 damping Methods 0.000 abstract description 5
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 11
- 238000013461 design Methods 0.000 description 8
- 230000006378 damage Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a unidirectional energy consumption beam falling prevention device, which comprises a bottom plate, wherein at least one corrugated plate is arranged on the bottom plate, the section of each corrugated plate is in a wave shape, the extending direction of each corrugated plate is consistent, the two sides of the wave crest and the wave trough of each corrugated plate are respectively provided with baffle plates, all baffle plates are connected to the bottom plate, the two ends of each corrugated plate are connected to the bottom plate, the bottom plate is used for connecting bridge piers, a limiting groove is arranged on the plate body of each corrugated plate, a sliding block is arranged in the limiting groove, the limiting direction of the limiting groove is consistent with the extending direction of the corrugated plate, and in an initial state, gaps are reserved on the sliding block and the two sides of the limiting groove, and the sliding block is used for connecting a beam body. The device effectively combines the energy consumption components with the beam falling prevention device, so that the beam falling prevention device has remarkable damping and energy consumption capacity, meets the bidirectional movement of the beam body in the normal operation stage, reduces the participation of the energy consumption components, and can temporarily and effectively consume energy and avoid beam falling when an earthquake occurs.
Description
Technical Field
The invention relates to the technical field of railway bridge girder falling prevention energy consumption, in particular to a girder falling prevention device with unidirectional energy consumption.
Background
The beam falling prevention device is a key structure of bridge earthquake resistance and is mainly used for preventing the beam falling caused by overlarge relative displacement between an upper structure and a lower structure, so that the beam falling prevention device is commonly adopted in bridge engineering in a earthquake area.
In the prior art, concrete stop blocks, high-strength steel pull rods, high-strength steel cables and the like are commonly adopted as the bridge falling prevention devices of the highway bridges in China, and various stop block forms are commonly adopted as the bridge falling prevention devices of the railway bridges based on I-steel processing, but the bridge falling prevention devices in the above forms have certain limitations and are embodied in the following aspects:
the bridge lacks of buffer capacity, under the action of earthquake, the beam body is almost in rigid collision with the stop block or the anti-falling device on the beam and the support cushion stone, so that the bridge structure is easy to damage, and the maintenance difficulty is high; the rigid collision has large impact force, on one hand, the anti-falling device needs larger section and consumes more materials, and on the other hand, the impact effect on the beam and the bridge pier is also large;
the earthquake energy consumption is poor, because concrete dog, steel pull rod, cable all have prevented the earthquake injury that falls the roof beam, can't consume energy through self deformation, and current I-steel dog self rigidity is great, can't effectively utilize steel ductile deformation to dispel the earthquake energy, therefore in the bridge of high intensity earthquake district, often need set up energy consumption device such as other dampers in addition alone to dispel the earthquake energy, can increase engineering cost like this, and need to design the space of placing for energy consumption device alone, and normal operation stage also can cause the participation of energy consumption component, extra increase replacement cost, in the earthquake come temporarily, also be difficult to full play power consumption ability.
The post-earthquake repair difficulty is high, the replaceability is poor, once the bridge is basically unable to repair due to damage, even if the bridge can be repaired, the cost of economy and time is very high, and the bridge is possibly damaged seriously in a strong aftershock.
Disclosure of Invention
The invention aims to overcome the defects that the existing anti-falling beam stop block lacks earthquake energy consumption capability, has poor adaptability in a high-intensity earthquake region, needs to be independently additionally provided with a damper device for consuming energy, and the independently provided damper device not only has additional cost and multiple installation steps, but also has loss to energy-consuming components in a normal operation stage, and provides the unidirectional energy-consuming anti-falling beam device.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a one-way power consumption prevent roof beam device that falls, contains the bottom plate, be equipped with at least one buckled plate on the bottom plate, every the cross-section of buckled plate is the wave shape, every the extending direction of buckled plate is unanimous, every crest and trough both sides of buckled plate are equipped with the baffle respectively, all the baffle connect in the bottom plate, every the both ends of buckled plate all connect in the bottom plate, the bottom plate is used for connecting the pier, be equipped with the spacing groove on the plate body of buckled plate, be equipped with the slider in the spacing groove, the spacing direction of spacing groove is unanimous with the extending direction of buckled plate, under the initial state, the slider all has the clearance with the spacing groove both sides, the slider is used for connecting the roof beam body, perhaps the slider is used for connecting the pier, the bottom plate is used for connecting the roof beam body.
The unidirectional energy consumption beam falling prevention device provided by the invention is adopted, wherein the corrugated plate is a metal structural member with higher ductility, such as: the steel structural member or the aluminum structural member, namely the corrugated plate is used as the energy-consuming member, the corrugated plate is connected between the bridge pier and the beam body, when the beam body moves relative to the bridge pier, the corrugated plate can be driven to compress or stretch, the seismic energy is dissipated through the stretching and ductile deformation of the corrugated plate, when the corrugated plate is compressed, the wave crest and the wave trough of the corrugated plate can bulge outwards along the lateral direction, after a certain deformation amount is outwards protruded, the baffle plate is contacted with the wave crest and the wave trough of the corrugated plate to restrict the deformation of the corrugated plate, in the initial state, the sliding block and the two sides of the limiting groove are provided with gaps, namely in the normal use stage of the bridge, the sliding block can slide between the limiting grooves due to the deformation of temperature, load and the like, the limiting groove is arranged to enable the beam body to realize bidirectional movement in the normal operation state, meanwhile, the unidirectionally arranged energy-consuming member is reduced to participate in the energy consumption in the normal operation state, the device effectively combines the energy consumption component and the beam falling prevention device, so that the beam falling prevention device has obvious damping and energy consumption performance, has reasonable and concise structural form, is convenient for adding the energy consumption component according to the energy consumption requirement, simplifies the design, greatly reduces the manufacturing cost compared with the existing independent energy consumption component and beam falling prevention device, is convenient and quick to install and replace, saves the installation space, satisfies the bidirectional movement of the beam body and reduces the participation of the energy consumption component in the normal operation stage, can effectively consume energy and avoid beam falling temporarily in the earthquake, has the buffering of the energy consumption component, can avoid the rigid collision of the beam body and the beam falling prevention device, is convenient to repair after the earthquake, has good application prospect, and has great significance for large-span bridge construction in high-intensity areas of railway bridges in China.
Preferably, the corrugated plate comprises a first clamping plate, wherein the first clamping plate is used for clamping two ends of the corrugated plate, the first clamping plate is connected to two end parts of the baffle, and the first clamping plate is connected to the bottom plate.
Preferably, the corrugated plate further comprises a second clamping plate, wherein the second clamping plate is used for clamping the middle part of the corrugated plate, and the top of the second clamping plate is provided with the limiting groove.
Preferably, all the corrugated plates have a wave shape in vertical section, or all the corrugated plates have a wave shape in horizontal section.
Further preferably, all the corrugated plates are sequentially stacked or arranged side by side along the height direction, and two adjacent corrugated plates are aligned.
By adopting the arrangement mode, all corrugated plates are stacked in the height direction or arranged side by side in the width direction, so that the design and arrangement are convenient.
Preferably, the wave shape includes a sine wave shape and a square wave shape.
The wave shape includes a sine wave shape and a square wave shape, and the square wave shape includes a trapezoid wave shape and a rectangular wave shape.
Preferably, all the corrugated plates can be replaced by corrugated steel pipes.
Preferably, each baffle is provided with stiffening rib plates on the outer side, each baffle is provided with a rubber cushion layer on the inner side, and each wave crest and wave trough of each corrugated plate are provided with a buffer block.
The stiffening rib plates are arranged, so that the rigidity of the baffles at the two sides is improved, and deformation and damage of the baffles are avoided; the rubber cushion layer is arranged, so that the contact area between the rubber cushion layer and the corrugated plate is effectively increased, and the contact point is provided with a certain buffer; the buffer block can effectively play a role in buffering and dissipating energy, increase damping and avoid damage to energy-consuming components caused by overlarge impact force.
Preferably, all the corrugated plates have the same shape and size.
All the corrugated plates are all in shape and size, so that the design and calculation of energy consumption capacity are facilitated.
In summary, compared with the prior art, the invention has the following beneficial effects:
1. the unidirectional energy-dissipation beam falling prevention device effectively combines the energy dissipation components with the beam falling prevention device, so that the beam falling prevention device has remarkable damping and energy dissipation performances, has reasonable and concise structural form, is convenient to add the energy dissipation components according to energy dissipation requirements, simplifies design, can greatly reduce manufacturing cost compared with the existing independent energy dissipation components and beam falling prevention devices, is convenient and quick to install and replace, saves installation space, meets the bidirectional movement of a beam body and reduces participation of the energy dissipation components in a normal operation stage, can temporarily and effectively consume energy and avoid beam falling when an earthquake occurs, has the buffering of the energy dissipation components, can avoid rigid collision between the beam body and the beam falling prevention device, is convenient to repair after the earthquake, and has good application prospect, and particularly has great significance for large-span bridge construction in high-intensity areas of railway bridges in China.
Description of the drawings:
FIG. 1 is a schematic structural view of a unidirectional energy-consuming beam drop prevention device according to the present invention;
fig. 2 is a schematic structural view of a second clamping plate in embodiment 1;
fig. 3 is a schematic structural diagram of a unidirectional energy-consuming beam drop prevention device in embodiment 2;
fig. 4 is a schematic structural view of a second clamping plate in embodiment 2.
The marks in the figure: 1-bottom plate, 2-buckled plate, 3-baffle, 41-splint I, 42-splint II, 5-slider, 6-stiffening rib plate.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and specific examples. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-2, the unidirectional energy dissipation beam falling prevention device of the present invention comprises a steel bottom plate 1, a first clamping plate 41 and a second clamping plate 42, wherein at least one corrugated plate 2 is arranged on the bottom plate 1, all the corrugated plates 2 are sequentially stacked or arranged side by side along the height direction, two adjacent corrugated plates 2 are aligned, the arrangement mode is convenient for design and arrangement, each horizontal section of each corrugated plate 2 is in a wave shape, the wave shape comprises a sine wave shape and a square wave shape, the square wave shape comprises a trapezoid wave shape and a rectangular wave shape, the shape and the size of each corrugated plate 2 are the same, the shape and the size of each corrugated plate are the same as the design and calculation energy dissipation capacity, each corrugated plate 2 is consistent in extending direction, only one corrugated plate 2 is exemplified, each wave crest and each wave trough of each corrugated plate 2 are provided with a buffer block, each wave crest and each wave trough of each corrugated plate 2 are respectively provided with a baffle 3, all the bottom plates 3 are connected to the two ends of each corrugated plate 2, each corrugated plate 1 is connected to the two clamping plates 41, and each clamping plate 41 is further connected to two ends of each clamping plate 41.
The plate body of the corrugated plate 2 is provided with a limit groove, a sliding block 5 is arranged in the limit groove, the limit direction of the limit groove is consistent with the extending direction of the corrugated plate 2, and the corrugated plate further comprises a second clamping plate 42, the second clamping plate 42 is used for clamping the middle part of the corrugated plate 2, the top of splint two 42 is equipped with the spacing groove, under the initial state, slider 5 all has the clearance with spacing groove both sides, bottom plate 1 is used for connecting pier or roof beam body, slider 5 is used for connecting roof beam body or pier.
As a preferable scheme of the embodiment, the outer side of each baffle plate 3 is provided with a stiffening rib plate 6, the inner side of each baffle plate 3 is provided with a rubber cushion layer, and the stiffening rib plates are arranged, so that the rigidity of the baffle plates 3 on two sides is improved, and deformation and damage of the baffle plates are avoided; the rubber cushion layer is arranged, so that the contact area between the rubber cushion layer and the corrugated plate 2 is effectively increased, and the contact point is provided with a certain buffer.
By adopting the unidirectional energy-consumption beam falling prevention device, in the initial state, gaps are formed between the sliding blocks 5 and two sides of the limiting grooves, namely, the sliding blocks 5 can slide between the limiting grooves or slide along the axial direction of the limiting grooves due to deformation of temperature, load and the like in the normal operation stage of a bridge, so that the beam body can move bidirectionally, but the limiting effect of the limiting grooves ensures that the corrugated plates 2 do not participate in energy consumption in the normal operation state, and the loss on energy-consumption components is reduced.
The device effectively combines the energy consumption components with the beam falling prevention device, so that the beam falling prevention device has the remarkable damping and energy consumption performance, the structural form is reasonable and concise, the energy consumption components are convenient to add according to the energy consumption requirement, the design is simplified, compared with the existing independent energy consumption components and the beam falling prevention device, the device can greatly reduce the manufacturing cost, is convenient and quick to install and replace, saves the installation space, meets the bidirectional movement of the beam body and reduces the participation of the energy consumption components in the normal operation stage, can effectively consume energy and avoid beam falling temporarily in the earthquake, has good application prospect, and has great significance in the construction of large-span bridges in high-intensity areas of railway bridges in China.
Example 2
As shown in fig. 3-4, the structure of the one-way energy-dissipation beam falling prevention device is substantially the same as that of the embodiment 1, and the difference is that two corrugated plates 2 are provided, the vertical section of each corrugated plate 2 is in a wave shape, two clamping plates 42 of each corrugated plate 2 are connected with each other, the two corrugated plates 2 are sequentially stacked along the height direction, and a limit groove is arranged above the two clamping plates 42 on the upper layer.
The beam falling prevention device capable of achieving unidirectional energy consumption can effectively save installation height, the energy consumption capability can be effectively improved by arranging the plurality of corrugated plates, meanwhile, bidirectional movement of the beam body is met and participation of energy consumption components is reduced in a normal operation stage, the beam falling prevention device can effectively consume energy and avoid falling temporarily in an earthquake, and the beam falling prevention device has good application prospect and is particularly significant for large-span bridge construction in high-intensity areas of railway bridges in China.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (4)
1. The utility model provides a one-way power consumption prevent roof beam device that falls, its characterized in that contains bottom plate (1), be equipped with at least one buckled plate (2) on bottom plate (1), every the cross-section of buckled plate (2) is the wave shape, every the extending direction of buckled plate (2) is unanimous, every crest and trough both sides of buckled plate (2) are equipped with baffle (3) respectively, all baffle (3) connect in bottom plate (1), every both ends of buckled plate (2) all connect in bottom plate (1), bottom plate (1) are used for connecting the pier, be equipped with the spacing groove on the plate body of buckled plate (2), be equipped with slider (5) in the spacing groove, under the initial state, slider (5) all have the clearance with the spacing groove both sides, slider (5) are used for connecting the roof beam body, perhaps slider (5) are used for connecting, bottom plate (1) are used for connecting the roof beam body;
the corrugated plate comprises a corrugated plate (2) and is characterized by further comprising a clamping plate I (41), wherein the clamping plate I (41) is used for clamping two ends of the corrugated plate (2), the clamping plate I (41) is connected to two end parts of the baffle plate (3), and the clamping plate I (41) is connected to the bottom plate (1);
the corrugated plate is characterized by further comprising a second clamping plate (42), wherein the second clamping plate (42) is used for clamping the middle part of the corrugated plate (2), and the top of the second clamping plate (42) is provided with the limit groove;
the vertical sections of all the corrugated plates (2) are in a wave shape, or the horizontal sections of all the corrugated plates (2) are in a wave shape;
all the corrugated plates (2) are sequentially stacked or arranged side by side along the height direction, and two adjacent corrugated plates (2) are aligned;
every the outside of baffle (3) all is equipped with stiffening rib plate (6), every the inboard of baffle (3) all is equipped with the rubber cushion, be equipped with the buffer block in every crest and the trough of buckled plate (2).
2. The drop beam device of claim 1, wherein the wave shape comprises a sine wave shape and a square wave shape.
3. The beam drop prevention device according to claim 1, characterized in that all corrugated plates (2) can be replaced with corrugated steel pipes.
4. The beam drop prevention device according to claim 1, characterized in that the shape and dimensions of all corrugated plates (2) are identical.
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CN111589008A (en) * | 2020-05-30 | 2020-08-28 | 陈韬 | Safety protection type building straight-jump escape device |
CN111878538B (en) * | 2020-08-27 | 2024-05-07 | 中铁二院工程集团有限责任公司 | Shear type energy-consumption beam falling prevention device |
CN114880750B (en) * | 2022-05-31 | 2023-07-07 | 中铁二院工程集团有限责任公司 | Design method of railway bridge energy consumption beam falling prevention device |
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