CN107587624A - A kind of assembled antiknock protection plate structure and preparation method thereof - Google Patents

A kind of assembled antiknock protection plate structure and preparation method thereof Download PDF

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Publication number
CN107587624A
CN107587624A CN201710929323.2A CN201710929323A CN107587624A CN 107587624 A CN107587624 A CN 107587624A CN 201710929323 A CN201710929323 A CN 201710929323A CN 107587624 A CN107587624 A CN 107587624A
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hook
steel plate
layer
high performance
protection plate
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CN107587624B (en
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宗周红
钱海敏
甘露
刘路
院素静
李明鸿
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Southeast University
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Southeast University
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Abstract

The invention discloses a kind of assembled antiknock protection plate structure and preparation method thereof, the protection plate structure is formed by polylith assembled antiknock protective plate combination of monomers, each of which block assembled antiknock protective plate monomer includes the steel plate (3) as internal layer, the ultra-high performance concrete layer (2) as intermediate layer and the foamed aluminium layer (1) as outer layer, the steel plate pours integral with ultra-high performance concrete layer, the foamed aluminium layer is with ultra-high performance concrete layer by structure gluing knot, and the back side of the steel plate is welded with U-shaped power consumption steel disc and assembling is linked up with.The present invention reaches the safe purpose for ensureing important supporting member using the high tenacity and deformation energy dissipation capacity of the foamed aluminium absorbability remarkable to blast impulse wave energy, the high ductility of ultra-high performance concrete, and steel plate and the U-shaped power consumption steel disc at its back side.Meanwhile the present invention has the advantages of cost-effective, quality controllable and easy for construction.

Description

A kind of assembled antiknock protection plate structure and preparation method thereof
Technical field
The present invention relates to a kind of antiknock guard technology of civil engineering structures supporting member, belong to taking precautions against natural calamities for civil engineering Mitigation technical field.
Background technology
In recent years, terrorist incident takes place frequently all over the world, and the important communal facility such as large-scale building construction, bridge turns into terror The primary explosive damage target of molecule, its means include car bomb, body bombs etc., cause structural damage and personnel Injures and deaths.In addition, occasional burst event, for example, the blast in transit of oil truck, fireworks and firecrackers lorry, factory's dust explosion, Gas station's blast causes a large amount of works and caved in and casualties, and its social influence is severe, has received extensive attention. What is more important, with progressively nervous, large structure such as bridge, power station and the important machine-operated building of international situation Target of attack can be turned into during war, it is immeasurable that it, which destroys the loss brought,.
Bridge pier, pillar and shear wall etc. are the supporting members of large structure, under explosive load, no antiknock safeguard procedures Supporting member be easy to destroy, its destroy consequence be catastrophic, often lead to collapsing for works, loss of function.Cause This, the antiknock Protective Research of supporting member at home and abroad receives significant attention at present.
It is most typical way in the structural outside layers Baogang for needing to carry out antiknock protection, but this way is not usually because examine Consider the reflection superimposed characteristics of shock wave, antiknock protection effect is general.This external upset (EU) concrete layer, increase integral rigidity are also a kind of More widespread practice, but this way is often because construction quality is bad, in contact explositions or near-field explosion, antiknock protection effect It is bad, and construction cost is larger.
In recent years, research finds that foamed aluminium has the absorbability of brilliance to blast impulse wave energy, can be largely Reduce peak stress, the ability of good absorption energy is also shown in the case of the reflection superposition of explosion wave, but it is single Best effect solely can not be played as antiknock overcoat, usually as interlayer or top layer as antiknock overcoat.It is in addition, super High performance concrete has the characteristics of high ductility, high tenacity and high energy to failure, is also progressively used as resisting due to the presence of steel fibre Quick-fried overcoat.
The features such as prefabricated member is because construction quality is controllable, short construction period, and overall life cycle cost is low is at home and abroad It is widely popularized, turns into the build model of main flow in building construction industry, the assembling of bridge structure is also in high speed development In.To adapt to the process of assembling, antiknock Protection Product should also follow industry development, with reference to the superiority development of assembling.Assembling The antiknock protection panel products of formula are applicable not only to newly-built structure, also have good compatibility for built works.
The content of the invention
Technical problem：It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of assembled antiknock protective plate Structure and its construction method.The domestic anti-explosion design specification for not putting into effect house and bridge structure at present, and explosive incident takes place frequently, Heavy losses are caused, have caused extensive attention.When newly-built or built works has antiknock protection requirements, it is constructed Cost is huge, and because the uncontrollability of site operation quality, traditional antiknock safeguard procedures do not have good effect.This hair It is bright by prefabrication, site-assembled form, by three kinds of exsertile combinations of materials of anti-knock properties into antiknock protective plate, not only save About cost, safe purpose that is easy for construction, quality controllable and ensureing important supporting member is also reached.
Technical scheme：The present invention assembled antiknock protection plate structure by polylith assembled antiknock protective plate combination of monomers and Into each of which block assembled antiknock protective plate monomer includes the steel plate as internal layer, the very-high performance coagulation as intermediate layer Soil layer and the foamed aluminium layer as outer layer.
Wherein：
The thickness of the foamed aluminium layer is 5-15cm.
The thickness of the steel plate is 2cm~4cm.
The back side of the steel plate is welded with U-shaped power consumption steel disc, and the thickness of the U-shaped power consumption steel disc is 0.5-1.5cm, and U-shaped consumes The spacing of the opening of energy steel disc is bonded after should ensure that installation with the body structure surface protected；The U-shaped power consumption steel disc arrangement Spacing is 300~600mm, and quantity is depending on actual conditions.
The corner region of outside four of the steel plate is welded with assembling hook, and upper row assembles the top edge linked up with and steel plate is neat Flat, the feather edge that lower row assembles hook has a distance for linking up with height away from steel plate base.
The top of the assembling hook carries glue filling opening, and assembling hook is also with hook base is arranged with, in the another of hook base Face is provided with rod iron；The rod iron is fixed in load-carrying members by way of pre-buried or bar planting, and hook base is located at load-carrying members table Face.
The length of the rod iron is 500-1000mm.
The medial surface of the steel plate is fixed with cross WELDING STUDS；The height of the cross WELDING STUDS is mixed with very-high performance Solidifying the thickness of the layer is consistent, and the spacing of each cross WELDING STUDS is 200mm~400mm.
The ultra-high performance concrete thickness degree is 4~8cm, to mix the high-strength concrete layer of steel fibre, its every cubic metre Formulation by weight it is as follows：
Cement 696.8-706.8kg
Silicon ash 205.6-215.6kg
Quartz sand 815.7-825.7kg
Water reducer 16.5-18.5kg
Water 159.0-169.0kg
Steel fibre 151.0-161.0kg
Silica flour 254.8-264.8kg.
The preparation method of the assembled antiknock protection plate structure of the present invention is carried out according to the following steps：
1) size of protective plate is determined according to practical structures size, carries out steel plate cutting；
2) position of assembling hook and U-shaped power consumption steel disc is determined, in steel plate lateral surface assemble welding hook and U-shaped power consumption steel Piece；
3) cross WELDING STUDS is welded in steel plate medial surface；
4) ultra-high performance concrete layer is poured on steel plate medial surface, and carries out the maintenance no less than 7 days；
5) structure glue bonded foam aluminium lamination is passed through on ultra-high performance concrete layer；
6) hook base and rod iron are welded, by rod iron is pre-buried or implantation is needed in the structure protected, hook base is located at Need the body structure surface protected；
7) prefabricated protective plate is transported to job site, during assembling, the encapsulating of in advance linking up with encapsulating pipe plugging in fitting Kong Zhong, the injecting structure glue after the assembling hook of protective plate is put into hook base, forms consolidation.
Beneficial effect：The present invention utilizes the foamed aluminium absorbability remarkable to blast impulse wave energy, very-high performance coagulation The high ductility of soil, and the high tenacity and deformation energy dissipation capacity of steel plate and the U-shaped power consumption steel disc at its back side, can effectively absorb quick-fried The energy of fried shock wave, significantly reduce the dynamic response of works supporting member under Blast Loads, reduce in civil engineering Damage of the supporting member under contact explositions and non-contact blast, reaches the safe purpose for ensureing important supporting member.Meanwhile The present invention is applied to the newly-built and built works for having antiknock demand, can be prefabricated in factory's completion, is transported to live progress Assembling, there is the advantages of cost-effective, quality controllable and easy for construction.
Brief description of the drawings
Fig. 1 is the schematic three dimensional views of the present invention.
Fig. 2 is the three-dimensional cut away view of the present invention.
Fig. 3 is the fixing device schematic diagram of the present invention.
Fig. 4 is instance graph of the present invention on bridge pier.
Have in figure：Foamed aluminium layer 1, ultra-high performance concrete layer 2, steel plate 3, assembling hook 4, U-shaped power consumption steel disc 5, cross Shape WELDING STUDS 6, hook base 7, rod iron 8.
Embodiment
A kind of assembled antiknock protection plate structure of the present invention includes steel plate, ultra-high performance concrete layer and bubble from inside to outside Foam aluminium lamination；The steel plate pours integral with ultra-high performance concrete layer；Foamed aluminium layer passes through knot with ultra-high performance concrete layer Structure gluing knot.The thickness of foamed aluminium layer is 5-15cm.The thickness of steel plate is 2cm~4cm, and the back side of steel plate is welded with U-shaped power consumption steel Piece, U-shaped power consumption steel plate thickness is 0.5-1.5cm, is bonded after highly should ensure that installation with body structure surface, and arrangement spacing is 300~600mm, for quantity depending on actual conditions, the corner region of the back side four of the steel plate is welded with assembling hook, assembling hook Top carries glue filling opening.Assembling hook is configured with hook base, and the upper row's top edge for assembling hook flushes with plate, and lower row links up with base The distance of one away from plate base hook height of edge.Hook base welds with rod iron, is fixed on load-bearing by way of pre-buried or bar planting Body structure surface.The length of rod iron is 500-1000mm.The front of steel plate is welded with cross WELDING STUDS, the height of cross WELDING STUDS With the consistency of thickness of ultra-high performance concrete layer.Ultra-high performance concrete layer is the high-strength concrete layer for mixing steel fibre, and it is formulated (every cubic metre of weight) as follows：
Cement 696.8-706.8kg
Silicon ash 205.6-215.6kg
Quartz sand 815.7-825.7kg
Water reducer 16.5-18.5kg
Water 159.0-169.0kg
Steel fibre 151.0-161.0kg
Silica flour 254.8-264.8kg.
The thickness of the ultra-high performance concrete layer is 4~8cm.
A kind of construction method of assembled antiknock protection plate structure of the present invention, is carried out according to the following steps：
(1) size of protective plate is determined according to practical structures size, carries out steel plate cutting；
(2) position of assembling hook and U-shaped power consumption steel disc is determined, assemble welding hook and U-shaped power consumption steel at the steel plate back side Piece；
(3) in steel plate front welding cross WELDING STUDS；
(4) ultra-high performance concrete layer is poured on steel plate, and carries out the maintenance no less than 7 days；
(5) the bonded foam aluminium lamination on ultra-high performance concrete layer；
(6) hook base and rod iron are welded, in the structure that pre-buried or implantation needs are protected；
(7) prefabricated protective plate is transported to job site, during assembling, the encapsulating of in advance linking up with encapsulating pipe plugging in fitting Kong Zhong, the injecting structure glue after the assembling hook of protective plate is put into hook base, forms consolidation embodiment 1：
As shown in figure 1, a kind of assembled antiknock protection plate structure of the present invention includes steel plate 3, very-high performance from inside to outside Concrete layer 2 and foamed aluminium layer 1；
As shown in figure 4, the square section bridge pier of a built 6m × 6m × 18m is, it is necessary to do antiknock safeguard procedures, root According to bridge pier size, the basic size for determining steel plate 3 is 3m × 3m, and the size of steel plate 3 for corner is on width according to reality Situation lengthens, and thickness elects 3cm as.
The top edge that hook is assembled by upper row flushes with plate, the distance of one away from plate base hook height of lower row's feather edge, Assembling hook 4 with glue filling opening is welded in the back side of steel plate 3.
By the U-shaped power consumption steel disc 5 that thickness is 1.5cm, it is bonded, presses with body structure surface after highly should ensure that installation 600mm spacing, the back side of steel plate 3 is welded in, U-shaped consumes energy steel disc 5 under larger Blast Loads, and the steel plate 3 of protective plate produces Play a part of further to consume energy during raw moderate finite deformation, can further protect bridge pier, reduce bridge pier to greatest extent in explosive load Under damage.
High 6cm cross WELDING STUDS 6 is in a row welded in the front of steel plate 3 (as shown in Figure 2), cross by 300mm spacing Shape WELDING STUDS 6 can make steel plate 3 be more closely combined as a whole with ultra-high performance concrete layer 2, increase the globality of protective plate.
In the edge Zhi Mumo of steel plate 3,6cm thickness ultra-high performance concretes layer 2 is poured, and carry out the conventional maintenance of 7 days, superelevation Performance concrete layer 2 is because the presence of steel fibre has higher ductility, tensile strength and energy to failure, as the second overcoat, It can be deformed under explosive load and consume larger shock wave energy.
Ultra-high performance concrete layer 2 is shown to polish, and paints structure glue, then bonds the thick foamed aluminium layers of 6cm 1, foamed aluminium layer 1 is located at protective plate outermost layer, because foamed aluminium material itself is to the effective energy absorption of explosion wave and peak It is worth stress filtration ability, as the first overcoat, can tentatively reduces harm and shock reflection of the explosive load to bridge pier Harm.
While protective plate prefabrication, carry out hook base 7 and its fix the prefabricated of rod iron 8：By long 800mm, diameter The back side (as shown in Figure 3) of hook base 7 is welded in for 25mm rod iron 8.
While being prefabricated in the factory, perforate is carried out in the correspondence position of bridge pier, treats that the hook base 7 of prefabricated completion is transported to construction Scene, by the prefabricated implant holes of hook base 7, and structure glue is poured into, hook base 7 is consolidated with bridge pier.
Prefabricated antiknock protective plate is transported to job site, during assembling, in advance by the filling of encapsulating pipe plugging in fitting hook 4 In glue hole, the injecting structure glue after the assembling hook 4 of protective plate is put into hook base 7, consolidation is formed.
The assembling of remaining protective plate is carried out successively, until completing.

Claims (10)

  1. A kind of 1. assembled antiknock protection plate structure, it is characterised in that：The protection plate structure is by polylith assembled antiknock protective plate Combination of monomers forms, and each of which block assembled antiknock protective plate monomer is included as the steel plate (3) of internal layer, as intermediate layer Ultra-high performance concrete layer (2) and the foamed aluminium layer (1) as outer layer.
  2. A kind of 2. assembled antiknock protection plate structure according to claim 1, it is characterised in that：The foamed aluminium layer (1) Thickness be 5-15cm.
  3. A kind of 3. assembled antiknock protection plate structure according to claim 1, it is characterised in that：The thickness of the steel plate (3) Spend for 2cm~4cm.
  4. A kind of 4. assembled antiknock protection plate structure according to claim 3, it is characterised in that：The back of the body of the steel plate (3) Face is welded with U-shaped power consumption steel disc (5), and the thickness of the U-shaped power consumption steel disc (5) is 0.5-1.5cm, the opening of U-shaped power consumption steel disc Spacing is bonded after should ensure that installation with the body structure surface protected；U-shaped power consumption steel disc (5) arrangement spacing is 300~ 600mm, quantity is depending on actual conditions.
  5. A kind of 5. assembled antiknock protection plate structure according to claim 4, it is characterised in that：Outside the steel plate (3) The corner region of face four is welded with assembling hook (4), and the top edge that upper row assembles hook (4) flushes with steel plate (3), and lower row, which assembles, to hang The feather edge of hook (4) has the distance of a hook height away from steel plate (3) base.
  6. A kind of 6. assembled antiknock protection plate structure according to claim 5, it is characterised in that：The assembling hook (4) Top carry glue filling opening, with hook base (7) is arranged with, rod iron also is provided with the another side of hook base (7) for assembling hook (4) (8)；The rod iron (8) is fixed in load-carrying members by way of pre-buried or bar planting, and hook base (7) is located at load-carrying members table Face.
  7. A kind of 7. assembled antiknock protection plate structure according to claim 6, it is characterised in that：The length of the rod iron (8) Spend for 500-1000mm.
  8. A kind of 8. assembled antiknock protection plate structure according to claim 1, it is characterised in that：The steel plate (3) it is interior Side is fixed with cross WELDING STUDS (6)；The height of the cross WELDING STUDS (6) and the thickness one of ultra-high performance concrete layer Cause, the spacing of each cross WELDING STUDS (6) is 200mm~400mm.
  9. A kind of 9. assembled antiknock protection plate structure according to claim 1, it is characterised in that：The very-high performance coagulation Soil layer (2) thickness is 4~8cm, and to mix the high-strength concrete layer of steel fibre, its every cubic metre formulation by weight is as follows：
    Cement 696.8-706.8kg
    Silicon ash 205.6-215.6kg
    Quartz sand 815.7-825.7kg
    Water reducer 16.5-18.5kg
    Water 159.0-169.0kg
    Steel fibre 151.0-161.0kg
    Silica flour 254.8-264.8kg.
  10. A kind of 10. preparation method of assembled antiknock protection plate structure as claimed in claim 1, it is characterised in that the preparation Method is carried out according to the following steps：
    1) size of protective plate is determined according to practical structures size, carries out steel plate (3) cutting；
    2) position of assembling hook (4) and U-shaped power consumption steel disc (5) is determined, in steel plate (3) lateral surface assemble welding hook (4) and U Shape power consumption steel disc (5)；
    3) in steel plate medial surface welding cross WELDING STUDS (6)；
    4) ultra-high performance concrete layer (2) is poured on steel plate (3) medial surface, and carries out the maintenance no less than 7 days；
    5) structure glue bonded foam aluminium lamination (1) is passed through on ultra-high performance concrete layer (2)；
    6) hook base (7) and rod iron (8) are welded, by rod iron (8) is pre-buried or implantation is needed in the structure protected, hook base (7) positioned at the body structure surface for needing to be protected；
    7) prefabricated protective plate is transported to job site, during assembling, encapsulating pipe plugging in fitting is linked up with to the glue filling opening of (4) in advance In, after protective plate assembling hook (4) be put into hook base (7) afterwards injecting structure glue, formed consolidation.
CN201710929323.2A 2017-10-09 2017-10-09 A kind of assembled antiknock protection plate structure and preparation method thereof Active CN107587624B (en)

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CN108442573A (en) * 2018-03-27 2018-08-24 北京建筑大学 A kind of assembled antiknock subtracts quick-fried wall and its construction method
CN109723491A (en) * 2019-01-17 2019-05-07 中铁第四勘察设计院集团有限公司 A kind of tunnel protection door and its forming method
CN110067198A (en) * 2018-08-01 2019-07-30 内蒙古大学 A kind of steel reinforced concrete composite beam bridge and its construction method

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CN110067198A (en) * 2018-08-01 2019-07-30 内蒙古大学 A kind of steel reinforced concrete composite beam bridge and its construction method
CN109723491A (en) * 2019-01-17 2019-05-07 中铁第四勘察设计院集团有限公司 A kind of tunnel protection door and its forming method
CN109723491B (en) * 2019-01-17 2024-01-16 中铁第四勘察设计院集团有限公司 Tunnel protection door and forming method thereof

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