CN106351116B - A kind of composite multi-layer explosion-protection equipment for viaduct pier - Google Patents
A kind of composite multi-layer explosion-protection equipment for viaduct pier Download PDFInfo
- Publication number
- CN106351116B CN106351116B CN201610939240.7A CN201610939240A CN106351116B CN 106351116 B CN106351116 B CN 106351116B CN 201610939240 A CN201610939240 A CN 201610939240A CN 106351116 B CN106351116 B CN 106351116B
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- China
- Prior art keywords
- steel plate
- pier
- steel pipe
- protection equipment
- viaduct
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Classifications
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements
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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 kind of composite multi-layer explosion-protection equipment for viaduct pier, including macromolecular elastomer, round steel pipe and the empty cabin being successively set on from inside to outside on the outside of bridge pier, the macromolecular elastomer bonds with bridge pier and steel plate colloid, the round steel pipe is welded to connect with steel plate and empty cabin, and the empty cabin is made up of interior steel plate and outer steel plate.Apparatus of the present invention utilize conservation of energy principle; by setting the devices such as macromolecular elastomer, round steel pipe, empty cabin around viaduct pier; the dynamic responses such as acceleration, the displacement of the lower bridge pier of mid-air explosion effect can be effectively reduced; shock wave pressure release mitigates effect of the shock wave pressure to pier stud; shock wave is absorbed to the energy of pier stud by the plastic deformation of steel pipe and the elastic deformation of macromolecular elastomer; reduce damage of the viaduct pier under non-contact blast and contact explositions load, reach the purpose of protection viaduct pier.
Description
Technical field
The invention belongs to the field of preventing and reducing natural disasters of civil engineering jackshaft girder construction, bridge pier in bridge structure is related specifically to
Security fields, the device protected more specifically to a kind of explosion-proof for elevated bridge bridge pier.
Background technology
In the last few years, the terrorist bombings attack occurs again and again, is implemented by car bomb to the explosive damage of science of bridge building
One of Main Means through reaching its attack of terrorism purpose as terrorist；In addition, contingency explosion accident, such as fireworks are quick-fried
The accidental explosion that fried, oil gas etc. occurs in transportation, also can not be ignored to the harm caused by science of bridge building；It is even more important
Be：In face of international environment complicated and changeable, the conventional war for winning local in the high-tech has become China's defense
The strategic directing thought of defense policy.Bridge is the important component of transportation lifeline engineering, and science of bridge building is once by probably
It is afraid of explosive attack or hightech conventional weapon strike, the paralysis of lifeline traffic engineering, regional economic interaction interruption etc. will be caused
A series of calamitous chain effects.
Bridge pier column is one of crucial primary structure member of bridge structure, and the destruction of bridge pier column is that each component of bridge structure is broken
It is most catastrophic in bad, it is serious by cause whole bridge structure continuous collapse and loss of function, therefore carry out bridge pier column
Antiknock protection as important research problem.
With the development of urban economy, the increase of urban population drastically makes vehicle also increasing, and plane traffic main artery meets with
To serious blocking and crowded, therefore, it is necessary to elevated bridge is built to alleviate urban traffic blocking；In order to ensure various traffic roads
Line is not interfere with each other, and builds overpass in road, railway crossing part yet；The friendship being widely used in highway and urban road
Lead to busy location.Viaduct pier height is higher, generally armored concrete pillar bridge pier, and columnar pier is thicker, typically in
There are circle, rectangle, ellipse or the polygon with water caltrop in single-columned pier, its section.
At present, the pier stud antiknock protector below existing deep water, but antiknock protection and the pier stud waterborne of underwater pier stud
Antiknock preventing principle is different, therefore can not carry out the antiknock of pier stud waterborne protection using the antiknock protector of underwater pier stud.
And viaduct pier is normally at more than road surface (more than the water surface), it is easier compared with the following bridge pier of the water surface by explosion accident, one
Denier pier stud is blown up, and overpass total Collapse will certainly be caused to destroy, and is destroyed compared with only bridge floor and is more difficult to repair.Therefore, urgently
Antiknock protection need to be carried out to viaduct pier, and the antiknock protector of viaduct pier is not yet set at present, it is difficult to overhead
Bridge bridge pier carries out antiknock protection.
Viaduct pier in the case of without protection, can directly by blast air-shock wave and explosion product it is straight
Effect is connect, bridge pier is typically built using armored concrete, and its integral rigidity is larger, and crack-resistant performance of concrete is poor, quick-fried
When fried non-contact blast closer to the distance, explosive equivalent is larger and the contact explositions on pier stud surface, pier stud can produce seriously
Damage, or even caving in for pier stud can be caused, so that bridge integrally destroys.Lack antiknock during Bridge Design now to set
Specification is counted, the effect of explosive load is not accounted in conventional design, does not have antiknock safeguard procedures more, substantial amounts of bridge pier column is firm
Degree, intensity or ductility etc. no longer meet antiknock requirement.
The content of the invention
It is an object of the invention to provide a kind of composite multi-layer explosion-protection equipment for viaduct pier, is protected and filled by antiknock
The energy expenditure principle put, shock wave caused by blast is dissipated, and explosion product is obstructed, effective to reduce
Explosion wave is applied directly to pier stud surface with explosion product, the effect of being effectively protected is served to pier stud, to establishing one
The complete effective antiknock guard system of set has great importance.
The technical solution adopted by the present invention is：A kind of composite multi-layer explosion-protection equipment for viaduct pier, this is compound more
Layer explosion-protection equipment is arranged on the periphery of bridge pier, including macromolecular elastomer, round steel pipe and empty cabin；
The inwall of the macromolecular elastomer is bonded at bridge pier surface by colloid, and the outer wall of macromolecular elastomer passes through colloid
Steel plate is bonded with, steel plate outer wall is welded with round steel pipe, and being welded on the outside of round steel pipe is free cabin；
The empty cabin includes interior steel plate and outer steel plate, is connected between interior steel plate and outer steel plate by dividing plate.
The round steel pipe is thin-walled hollow steel pipe, is discontinuously evenly distributed on surface of steel plate, and is welded to connect with steel plate,
Connected by transverse connection between round steel pipe, be welded on the outside of round steel pipe on the interior steel plate in sky cabin.
Preferably, the macromolecular elastomer is polyurethane material.
Preferably, the steel plate is the thin steel sheet of stainless steel.
Preferably, the macromolecular elastomer is connected by waterproof adhesive with bridge pier, steel plate.
Preferably, the transverse connection of the round steel pipe is Circular Thin hollow steel pipe, vertically it is interrupted along bridge pier
Distribution.
Preferably, the dividing plate in the empty cabin is discontinuously welded between interior steel plate and outer steel plate, it is intermittently-arranged on dividing plate
Dividing plate perforate.
Preferably, arranging relief hole on the outer surface of steel plate in the empty cabin, relief hole is by certain thickness special steel
System lid is formed.
Beneficial effect：
(1) apparatus of the present invention utilize conservation of energy principle, by setting macromolecular elastomer, circle around viaduct pier
The devices such as steel pipe, empty cabin, the dynamic responses such as acceleration, the displacement of the lower bridge pier of mid-air explosion effect can be effectively reduced, to impact
Ripple pressure release simultaneously mitigates effect of the shock wave pressure to pier stud, passes through the plastic deformation of steel pipe and the elastic deformation of macromolecular elastomer
To absorb energy of the shock wave to pier stud, reduce viaduct pier in non-contact blast and the damage under contact explositions load
Wound, reach the purpose of protection viaduct pier.
(2) present invention can also be used to reduce the damages of the high-speed impact to viaduct pier such as vehicle, reach multiple-protection
Effect.
(3) relief hole plays a part of releasing shock wave pressure, the special steel of relief hole in explosion time in apparatus of the present invention
Piece conveniently can be installed and changed after explosion wave.
Brief description of the drawings
Fig. 1 is the structural representation for the composite multi-layer explosion-protection equipment that the present invention is used for viaduct pier；
Fig. 2 is the profile for the composite multi-layer explosion-protection equipment that the present invention is used for viaduct pier.
In figure：1st, bridge pier, 2, the joint face of bridge pier and macromolecular elastomer, 3, macromolecular elastomer, 4, steel plate, 5, circular
Steel pipe, 6, interior steel plate, 7, dividing plate, 8, outer steel plate, 9, relief hole, 10, transverse connection, 11, dividing plate perforate.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in figure 1, the viaduct pier composite multi-layer explosion-protection equipment that is used for of the present invention includes macromolecular elastomer 3, circle
Shape steel pipe 5 and empty cabin.
Macromolecular elastomer 3, round steel pipe 5 and empty cabin are successively set on the outside of bridge pier 1 from inside to outside, wherein, high score
Elastic body 3 is bonded with bridge pier 1 and the colloid of steel plate 4, and round steel pipe 5 is welded to connect with empty cabin, and empty cabin is by interior steel plate 6 and outer steel plate
8 are formed.
Waterproof adhesive is uniformly coated in the surface of bridge pier 1 after polishing is coarse, and macromolecular elastomer 3 is bonded at into the table of bridge pier 1
Face, there can not be bubble generation between macromolecular elastomer 3 and bridge pier 1.The surface of macromolecular elastomer 3 is uniformly coated with waterproof adhesive,
Steel plate 4 is close to the surface of macromolecular elastomer 3, there can not be bubble generation between macromolecular elastomer 3 and steel plate 4.Steel plate 4 is
The thin steel sheet of stainless steel.Round steel pipe 5 uses slim round steel pipe, and spaced apart is distributed in around steel plate 4, passes through
Round steel pipe 5 is connected by welding with the interior steel plate 6 in steel plate 4 and empty cabin, the welding procedure spaced apart for both having facilitated steel pipe, again
The interior deformation of steel plate 6 can be allowed to play a part of absorbing energy.Connected by transverse connection 10 between round steel pipe 5, laterally connected
Fitting 10 is vertically being spaced apart, and transverse connection 10 can make the slim steel pipe of squarely or circle, by being welded on
On each round steel pipe 5, can also with euphroe by steel chain colligation on the outside of steel pipe, to fix round steel pipe 5
Effect.Dividing plate 7 in empty cabin is only to play fixed outer steel plate 8, therefore the quantity of dividing plate 7 can be with relatively small number of distribution
In empty cabin, be connected by welding with interior steel plate 6 and outer steel plate 8, due to keep entirely empty cabin full through, as shown in Fig. 2
All dividing plates 7 are provided with dividing plate perforate 11, dividing plate perforate 11 can be circular, square or oval, it might even be possible to by dividing plate
It is made as lattice, it is therefore an objective to whole empty cabin is connected, keeps shock wave to be propagated in empty cabin.The outer outside of steel plate 8 is set
Relief hole 9, the making of relief hole 9 is to install certain thickness special steel lid in the outer outside of steel plate 8, when explosion wave makes sky
During the increase of cabin internal pressure, steel lid can come off, and release the air of SHOCK COMPRESSION, reduce the pressure in cabin, and relief hole can be with
It is designed as circular, square etc..Macromolecular elastomer 3, round steel pipe 5 and empty cabin will be evenly distributed on around bridge pier 1, ensured not
Equidirectional explosion wave and explosion product produce destruction to bridge pier 1.
When blast air-shock wave is applied on protector with explosion product, protector shock wave and explosion product
The energy of carrying plays a part of decay.Empty cabin is as first of antiknock defence line damping capacity, when shock wave and explosion product arrive
When coming, had an effect first with outer steel plate 8, be insufficient to allow outer steel plate 8 that petal type cracking occurs when energy is smaller, outer steel plate 8 is sent out
It is raw to be plastically deformed to absorb the energy of shock wave；It is enough to make outer steel plate 8 is overall to ftracture when energy is larger, empty cabin can meet
The space of craze and transfiguration inwardly occurs for outer steel plate 8, once outer steel plate 8 ftractures, shock wave can enter empty cabin and spread, pressure increase
When, the steel disc of relief hole 9 drops, and reaches pressure release effect, and the energy of shock wave passes through the cracking of outer steel plate 8 and letting out for relief hole 9
Pressure reduces the energy of shock wave and explosion product.
Round steel pipe 5 is as second antiknock defence line damping capacity, by the first line of defence shock wave and explosion product
Energy weakened, continue to be applied on round steel pipe 5, the energy of shock wave and explosion product has been largely converted into circle
The kinetic energy of steel pipe 5, round steel pipe 5 is overall to move, and when the energy of shock wave and explosion product is larger, portion of energy passes through
The plastic deformation of round steel pipe 5 absorbs energy.
Macromolecular elastomer 3 is used as the 3rd antiknock defence line damping capacity, and behind preceding twice defence line, explosion product is basic
Outside is blocked in, the energy of shock wave continues to propagate toward three lines of defence, the thermal insulation of macromolecular elastomer 3, impact resistance
Property and other effects preferably, blast can be produced that heat energy is completely isolated in the outside of bridge pier 1, the energy of shock wave dissipated it is more,
Macromolecular elastomer 3 only needs to absorb energy by its elastic deformation, also can by its it is rapid recover deformation by elastic potential energy to
Outer release, and macromolecular elastomer 3 is also used as padded coaming, prevents the protector of external rigidity from producing destruction to bridge pier 1.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention,
Some improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.In the present embodiment not
The available prior art of clear and definite each part is realized.
Claims (7)
- A kind of 1. composite multi-layer explosion-protection equipment for viaduct pier, it is characterised in that：The composite multi-layer explosion-protection equipment is set In the periphery of bridge pier, including macromolecular elastomer, round steel pipe and empty cabin；The inwall of the macromolecular elastomer is bonded at bridge pier surface by colloid, and the outer wall of macromolecular elastomer is bonded by colloid There is steel plate, steel plate outer wall is welded with round steel pipe, and being welded on the outside of round steel pipe is free cabin；The empty cabin includes interior steel plate and outer steel plate, is connected between interior steel plate and outer steel plate by dividing plate；The round steel pipe is thin-walled hollow steel pipe, is discontinuously evenly distributed on surface of steel plate, and is welded to connect with steel plate, circular Connected by transverse connection between steel pipe, be welded on the outside of round steel pipe on the interior steel plate in sky cabin.
- A kind of 2. composite multi-layer explosion-protection equipment for viaduct pier according to claim 1, it is characterised in that：It is described Macromolecular elastomer is polyurethane material.
- A kind of 3. composite multi-layer explosion-protection equipment for viaduct pier according to claim 1, it is characterised in that：It is described Steel plate is the thin steel sheet of stainless steel.
- A kind of 4. composite multi-layer explosion-protection equipment for viaduct pier according to claim 1, it is characterised in that：It is described Macromolecular elastomer is connected by waterproof adhesive with bridge pier, steel plate.
- A kind of 5. composite multi-layer explosion-protection equipment for viaduct pier according to claim 1, it is characterised in that：It is described The transverse connection of round steel pipe is Circular Thin hollow steel pipe, along the vertical Disjunct distribution of bridge pier.
- A kind of 6. composite multi-layer explosion-protection equipment for viaduct pier according to claim 1, it is characterised in that：It is described The dividing plate in empty cabin is discontinuously welded between interior steel plate and outer steel plate, intermittently-arranged dividing plate perforate on dividing plate.
- A kind of 7. composite multi-layer explosion-protection equipment for viaduct pier according to claim 1, it is characterised in that：It is described Relief hole is arranged on the outer surface of steel plate in empty cabin, relief hole is made up of extraordinary steel lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610939240.7A CN106351116B (en) | 2016-10-25 | 2016-10-25 | A kind of composite multi-layer explosion-protection equipment for viaduct pier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610939240.7A CN106351116B (en) | 2016-10-25 | 2016-10-25 | A kind of composite multi-layer explosion-protection equipment for viaduct pier |
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| CN106351116A CN106351116A (en) | 2017-01-25 |
| CN106351116B true CN106351116B (en) | 2018-01-16 |
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| CN201610939240.7A Active CN106351116B (en) | 2016-10-25 | 2016-10-25 | A kind of composite multi-layer explosion-protection equipment for viaduct pier |
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| CN114086683B (en) * | 2021-11-24 | 2022-12-02 | 天津大学 | Antiknock protective structure based on shock wave steering energy dissipation principle |
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| CN106351116A (en) | 2017-01-25 |
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