CN203716050U - Anti-knock and anti-drop beam system of small and medium-sized beam bridge - Google Patents
Anti-knock and anti-drop beam system of small and medium-sized beam bridge Download PDFInfo
- Publication number
- CN203716050U CN203716050U CN201420011515.7U CN201420011515U CN203716050U CN 203716050 U CN203716050 U CN 203716050U CN 201420011515 U CN201420011515 U CN 201420011515U CN 203716050 U CN203716050 U CN 203716050U
- Authority
- CN
- China
- Prior art keywords
- steel plate
- bearing
- main beam
- girder
- bridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to an anti-knock and anti-drop beam system of a small and medium-sized beam bridge. The anti-knock and anti-drop beam system is composed of a main beam, an upper support steel plate, a shape memory alloy inhaul cable, a steel strand inhaul cable, a lower support steel plate, a pier, a rubber element and a smooth circular ring. The main beam and the upper support steel plate, and the lower support steel plate and the pier are reliably connected together by use of anchor bolts, respectively; the shape memory alloy inhaul cable and the steel strand inhaul cable are connected between the upper support steel plate and the lower support steel plate; due to the structure, the main beam, the support and the pier are in reliable connection with one another, and therefore, the bouncing amplitude of the main beam of the beam bridge under blast load impact can be limited and beam falling can be avoided. Besides, the shape memory alloy inhaul cable has superelasticity and energy dissipation property, and thus is capable of dissipating one part of blast energy in the bouncing process of the main beam; due to the deformation recovery capability of the shape memory alloy, the shape memory alloy inhaul cable can be recovered to the original condition by virtue of external temperature adjustment after the displacement of the main beam, and then the main beam can be returned to the original position.
Description
Technical field
The utility model belongs to civil engineering, bridge aniknock technology field, is specifically related to the girder falling system in a kind of beam bridge antiknock measure.
Background technology
In China's modern transportation construction and operation process, the explosion accident that bridge construction may have an accident at any time, the attack of terrorism, oil truck blast, the blast of fireworks and firecrackers transport vehicle etc. are all a kind of potential threats to bridge construction and public safety.But aspect bridge combats a natural disaster to take precautions against natural calamities, the work such as Wind-resistance of Bridges, antidetonation is relatively ripe, there is the specification can reference and foundation both at home and abroad, and bridge antiknock research work progress is relatively less, do not have clear and definite standard or specification to inquire about both at home and abroad yet, therefore, aspect bridge antiknock, do not have clearly and effectively counter-measure.
The highway bridge of China is main mainly with beam bridge, and beam bridge girder and bearing under the impact of bridge explosive load are its fragile members.The major measure of the blast impulse of bridge construction reply is at present improve reinforcement ratio and use fibrous material reinforced concrete, these measures can improve the impact resistance of Local Members, but when the Blast Shock time is shorter, imposed load is when larger, the bridge floor of beam bridge there will be larger rebound effect, at this moment the spring amplitude of girder can strengthen, easily cause the damage of bearing and girder, even can cause falling the generation of beam, the beam once fall, not only can aggravate the loss of public property, the more important thing is and can cause more casualties.
For above phenomenon, need in the antiknock measure of beam bridge, increase practical and effective falling-off prevention measures, according to there being experience, stopping means can be combined to use with bearing.Aspect girder falling, marmem anti-fall girder apparatus has better performance than common steel strand device, and marmem is because have superelastic effect, larger damping can be provided, consume the energy that vibration is transmitted, meanwhile, marmem has extremely strong distortion recovery capability, the overstrain producing in vibration deformation can comparatively fast be recovered, and marmem is widely used in practical application and scientific research.
Summary of the invention
The purpose of this utility model is to provide the girder falling system in a kind of middle-size and small-size beam bridge antiknock measure, and it can pass through the reliable connection between girder, bearing and bridge pier, avoids the girder beam that falls under explosive load.
The beam bridge antiknock girder falling system the utility model proposes, by girder 1, bearing upper steel plate 2, SMA Tendons 3, guy of twisted steel cable 4, bearing lower steel plate 5, bridge pier 6, rubber element 7 and smooth torus 8 form, bearing upper steel plate 2 and bearing lower steel plate 5 are between girder 1 and bridge pier 6, rubber element 7 is between bearing upper steel plate 2 and bearing lower steel plate 5, bearing upper steel plate 2 is reliably connected by anchor bolt with girder 1, bearing lower steel plate 5 is reliably connected by anchor bolt with bridge pier 6, SMA Tendons 3 is reliably connected by smooth torus 8 with bearing upper steel plate 2 and bearing lower steel plate 5 respectively, guy of twisted steel cable 4 is reliably connected with bearing upper steel plate 2 and bearing lower steel plate 5 respectively.
Owing to adopting said structure, between girder 1, bearing upper steel plate 2, bearing lower steel plate 5 and bridge pier 6, can reliably connect, in the girder spring process of beam bridge, can limit the relative displacement of girder and bridge pier, effectively avoid the generation of beam.
In the utility model, described rubber element 7 adopts the structure of existing laminated rubber bearing.
In the utility model, the connected mode of described guy of twisted steel cable 4 and bearing upper steel plate 2, bearing lower steel plate 5 adopts the connected mode of existing inhaul cable damping support saddle.
The beneficial effects of the utility model are:
1), by the falling-off prevention measures of middle-size and small-size beam bridge and the effective combination of laminated rubber bearing, in the situation that not needing to increase considerably detail estimate, construction that can be more convenient, saves the duration;
2) marmem has super-elasticity and power consumption property, and a part of Explosive Energy that can dissipate in the spring process of girder, reduces the infringement of blast impulse to bridge construction;
3), after the stressed surrender of SMA Tendons, guy of twisted steel cable can further limit the relative displacement of girder and bridge pier, reduces the damage of rubber element;
4) marmem has superpower distortion recovery capability, after girder displacement, can make SMA Tendons restore to the original state by extraneous variations in temperature, with the restoring force acting in conjunction of rubber element self, the girder of displacement is set back.
Brief description of the drawings
Fig. 1 is beam bridge antiknock girder falling system front elevation view.
Fig. 2 is beam bridge antiknock girder falling system side elevation.
Fig. 3 is limiting rubber support.
In figure: 1 is girder, 2 is bearing upper steel plate, and 3 is SMA Tendons, and 4 is guy of twisted steel cable, and 5 is bearing lower steel plate, and 6 is bridge pier, and 7 is rubber element, and 8 is smooth torus.
Detailed description of the invention
Do by reference to the accompanying drawings further the utility model explanation below by embodiment.
Embodiment 1: the girder falling system in a kind of middle-size and small-size beam bridge antiknock measure, is made up of girder 1, bearing upper steel plate 2, SMA Tendons 3, guy of twisted steel cable 4, bearing lower steel plate 5, bridge pier 6, rubber element 7, smooth torus 8.In bearing production plant, rubber element 7 is connected by binding agent with bearing upper steel plate 2 and bearing lower steel plate 5, SMA Tendons 3 is reliably connected by smooth torus 8 with bearing upper steel plate 2 and bearing lower steel plate 5, guy of twisted steel cable 4 is connected by design structure with bearing upper steel plate 2 and bearing lower steel plate 5, and on bearing upper steel plate 2 and bearing lower steel plate 5 preboring screwed hole, by anchor bolt, bearing upper steel plate 2 is reliably connected with girder 1 at the construction field (site), bearing lower steel plate 5 is reliably connected by anchor bolt with bridge pier 6.
The length of guy of twisted steel cable 4 is adjusted according to the allowable strain value of rubber element.
The tensile strength of anchor bolt and shear strength can be carried out design modifying according to the stressing conditions of different explosive load.
The utlity model has easy construction, save the advantage of duration, the use of shape memory alloy material certain Explosive Energy that can dissipate, and utilize the distortion recovery capability of marmem can contribute to the girder of displacement to set back.
Claims (3)
1. a beam bridge antiknock girder falling system, it is characterized in that by girder (1), bearing upper steel plate (2), SMA Tendons (3), guy of twisted steel cable (4), bearing lower steel plate (5), bridge pier (6), rubber element (7) and smooth torus (8) composition, bearing upper steel plate (2) and bearing lower steel plate (5) are positioned between girder (1) and bridge pier (6), rubber element (7) is positioned between bearing upper steel plate (2) and bearing lower steel plate (5), bearing upper steel plate (2) is reliably connected by anchor bolt with girder (1), bearing lower steel plate (5) is reliably connected by anchor bolt with bridge pier (6), SMA Tendons (3) is reliably connected by smooth torus (8) with bearing upper steel plate (2) and bearing lower steel plate (5) respectively, guy of twisted steel cable (4) is reliably connected with bearing upper steel plate (2) and bearing lower steel plate (5) respectively.
2. beam bridge antiknock girder falling system according to claim 1, is characterized in that described rubber element (7) adopts the structure of existing laminated rubber bearing.
3. beam bridge antiknock girder falling system according to claim 1, is characterized in that the connected mode of described guy of twisted steel cable (4) and bearing upper steel plate (2), bearing lower steel plate (5) adopts the connected mode of existing inhaul cable damping support saddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011515.7U CN203716050U (en) | 2014-01-09 | 2014-01-09 | Anti-knock and anti-drop beam system of small and medium-sized beam bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420011515.7U CN203716050U (en) | 2014-01-09 | 2014-01-09 | Anti-knock and anti-drop beam system of small and medium-sized beam bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716050U true CN203716050U (en) | 2014-07-16 |
Family
ID=51155218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420011515.7U Expired - Fee Related CN203716050U (en) | 2014-01-09 | 2014-01-09 | Anti-knock and anti-drop beam system of small and medium-sized beam bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716050U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894694A (en) * | 2018-06-01 | 2018-11-27 | 东南大学 | A kind of antiknock window arrangement and its construction method |
| CN109629404A (en) * | 2018-12-28 | 2019-04-16 | 同济大学 | A kind of drag-line limit compound section reduces the large deformation rubber support of shear stiffness |
| CN115821733A (en) * | 2022-11-17 | 2023-03-21 | 四川九州城轨环境科技有限公司 | Shock absorption and isolation bridge support |
-
2014
- 2014-01-09 CN CN201420011515.7U patent/CN203716050U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894694A (en) * | 2018-06-01 | 2018-11-27 | 东南大学 | A kind of antiknock window arrangement and its construction method |
| CN109629404A (en) * | 2018-12-28 | 2019-04-16 | 同济大学 | A kind of drag-line limit compound section reduces the large deformation rubber support of shear stiffness |
| CN115821733A (en) * | 2022-11-17 | 2023-03-21 | 四川九州城轨环境科技有限公司 | Shock absorption and isolation bridge support |
| CN115821733B (en) * | 2022-11-17 | 2023-10-20 | 四川九州城轨环境科技有限公司 | Shock-absorbing and isolating bridge support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104278620B (en) | The ball of Self-resetting can enter formula winged and wave shock insulation pier stud | |
| CN203701330U (en) | Swing shear wall | |
| CN103696509A (en) | Swinging shear wall | |
| CN201778394U (en) | Prestress rubber support seat | |
| CN205653916U (en) | Energy dissipation shock attenuation that allies oneself with limb shear force wall links beam construction | |
| CN101806097A (en) | Tensile prestress rubber earthquake isolation support | |
| CN204000587U (en) | New city viaduct Horizontal Seismic system | |
| CN203716050U (en) | Anti-knock and anti-drop beam system of small and medium-sized beam bridge | |
| CN110388090A (en) | A kind of girder pre-stressed shear-resistant reinforcing device of RC based on marmem | |
| CN204267064U (en) | Embedded classification constant-resistance shearing resistance large deformation anchor device | |
| CN203626080U (en) | Self-resetting shear wall with replaceable coupling beam | |
| WO2013081769A3 (en) | A class of bearings to protect structures from earthquake and other similar hazards | |
| CN203891238U (en) | Energy-dissipating shock-absorbing support of aseismic wall | |
| CN104963355A (en) | Classification anchoring type draught fan rock anchor rod assembly | |
| CN103669594A (en) | Special-shaped steel column frame structure joint easy to restore after earthquake | |
| CN106499081A (en) | A kind of coupling beam wind resistance antishock device | |
| CN202519577U (en) | Bridge cable earthquake-reducing limiter | |
| CN204570931U (en) | A kind of Self-resetting shock-absorption spherical bearing | |
| CN105672523A (en) | Assembling type high-bearing buckling-resisting support | |
| CN110528777A (en) | Anti-seismic structure between a kind of assembled beam | |
| CN107587624B (en) | A kind of assembled antiknock protection plate structure and preparation method thereof | |
| CN203741831U (en) | Steel structure of prestress high-strength concrete pipe pile body | |
| CN205242248U (en) | Shape memory alloy cable shock mount | |
| CN202325581U (en) | Prestress anchor bolt support system suitable for dynamic loads | |
| CN203768790U (en) | Anti-explosion and anti-beam-falling system of beam bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20170109 |