CN106427084B - A kind of polygon lattice grid-rod structure sandwich plate - Google Patents
A kind of polygon lattice grid-rod structure sandwich plate Download PDFInfo
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- CN106427084B CN106427084B CN201610903458.7A CN201610903458A CN106427084B CN 106427084 B CN106427084 B CN 106427084B CN 201610903458 A CN201610903458 A CN 201610903458A CN 106427084 B CN106427084 B CN 106427084B
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- grid
- polygon
- lattice
- rod structure
- sandwich plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/546—Flexural strength; Flexion stiffness
Abstract
The invention discloses a kind of polygon lattice grid rod structure sandwich plates, including top panel, lower panel and the polygon of centre lattice grid rod structure, the polygon lattice grid rod structure includes grid wall and is arranged on the reinforcing prop of grid wall intersection, it is characterised in that：The grid wall is lattice, and the grid wall includes frame and the space in frame, and the frame is made of upper side frame, lower frame and the connector between upper side frame and lower frame, and the reinforcement column diameter or the length of side are more than grid wall thickness.Sandwich plate reinforcing prop of the present invention only undertakes vertical load, and lattice grid wall is solely subjected to Moment, and respectively the division of labor is clear and definite, and can give full play to material property, stock utilization higher.On this basis, then by setting reinforcing rib in lattice grid wall upper and lower ends, the resistance to compression, bending resistance and overall performance of sandwich plate are further enhanced.
Description
Technical field
It is polygon lattice grid-rod structure formula interlayer the present invention relates to a kind of sandwich plate more particularly to a kind of centre
Plate.
Background technology
Have become today of product primary evaluation index in energy conservation and environmental protection, the research of novel light structure is by people's
Pay attention to.Interlayer battenboard with its it is light-weight, rigidity is big, designability is strong the features such as become Aeronautics and Astronautics, railway, automobile, building
Wait one of indispensable structure in fields.Since cost of manufacture is higher at the beginning, it is mainly used for aviation boat from the fifties in last century
Its field.Afterwards with scientific and technological progress, the improvement of process is gradually applied to other industrial circles.The material for making sandwich plate has
Papery, composite material, metal etc..The sandwich layer that the characteristics of sandwich plate high-strength light is formed mainly due to in-between polygon grid
Structure.But in existing sandwich plate core structure, mostly grid wall is connected with each other, and also some is set in grid wall junction
Pillar, but itself be not to optimize polygon grid Sandwich Plates, since there are following three shortcomings：1) work as sandwich plate
When bearing perpendicular to the load of panel, the cell structure of sandwich layer is under pressured state, the key of the junction between grid wall
Region is also easy to produce torsion under vertical load, bending deformation outside the plane of a half-wave occurs so as to cause grid wall, to grid
The compression strength of structure has very big adverse effect；2) when sandwich plate is born perpendicular to the load of panel, in core structure
Be primarily subjected to vertical force effect is grid wall intersection.This is because grid wall is also easy to produce plane in itself since itself is very thin
Outer bending deformation, therefore the vertical force effect that can bear is very limited；3) sandwich plate is under Moment, on the one hand by upper
The countertorque that lower panel provides carrys out resist torque effect, on the other hand carrys out resist torque also by the grid wall in core structure and makees
With.But according to structure bending resistance principle it is found that the material of grid wall along short transverse upper and lower ends is respectively at compression and tension shape
State, internal stress are also the largest.And position stress very little among grid wall, it is impossible to make full use of material, and folder can be increased
Laminate weight.
Invention content
The technical problems to be solved by the invention are in view of the deficiency of the prior art, and to provide a kind of quality
Gently, stock utilization is high, can play a kind of polygon lattice grid-rod structure formula sandwich plate of material maximum performance.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of polygon lattice grid-rod structure formula sandwich plate, including top panel, lower panel and the polygon of centre
Lattice grid-rod structure, the polygon lattice grid-rod structure include grid wall and are arranged on grid wall intersection
Reinforcing prop, it is characterised in that：The grid wall is lattice, and the grid wall includes frame and the sky in frame
Lattice, the frame are made of upper side frame, lower frame and the connector between upper side frame and lower frame, the reinforcing prop
Diameter or the length of side are more than grid wall thickness.
The grid wall of polygon lattice grid-rod structure sandwich plate of the present invention is lattice, and the advantage of the structure is,
The characteristics of lattice grid wall is light-weight, bending stiffness is good is given full play to, and gives full play to the anti-pressure ability of reinforcing prop, up and down
Reinforcing rib inside frame can further improve this sandwich plate intensity.
Reinforcing rib is provided in the upper side frame and lower frame.
The reinforcing rib can be the how arched prestressing force reinforcing rib formed by pre- tensioning.
On the basis of lattice grid wall, by setting reinforcing rib, and can be according to reality in lattice grid pars intramuralis
Engineering applies reinforcing rib prestressing force to form how arched prestressing force reinforcing rib, further improves the pressure resistance of entire sandwich plate
Degree, bending strength and globality.
The space is circular spaces or polygon space.
The polygon space is triangle space or quadrangle space.
The polygon grid of the polygon lattice grid-rod structure is triangular lattice, quadrangle grid or six sides
Shape grid etc..
The reinforcing prop is polygon column or cylinder.
The reinforcing prop is solid or hollow.
The top panel and/or lower panel are surface plate or curved slab.
It is different that the core structure to be formed is connected from polygon grid in conventional interlayer plate, although the present invention and sandwich plate,
But its core structure is actually mainly made of reinforcing prop and lattice grid wall, it is often more important that its stress model produces
Fundamental change.Three major defect analyses are it is found that when conventional interlayer plate is by vertical lotus as existing for above-mentioned conventional interlayer plate
When load or Moment, core structure can not give full play to the resistance to compression or anti-bending strength corresponding to material.It is and of the invention
The mechanical model of sandwich plate is：Reinforcing prop only undertakes vertical load, and lattice grid wall is solely subjected to Moment, respectively divides the work bright
Really, and material property, stock utilization higher can be given full play to.On this basis, then by two above and below lattice grid wall
End setting reinforcing rib, further enhances the resistance to compression, bending resistance and overall performance of sandwich plate.
Description of the drawings
Fig. 1 is polygon lattice grid of the present invention-rod structure sandwich plate (quadrangle) example schematic, and reinforcing prop is real
Heart cylinder.
Fig. 2 is structure general illustration of the present invention.
Fig. 3 is polygon lattice grid of the present invention-rod structure formula sandwich plate (triangle) example schematic, and reinforcing prop is
Hollow cylinder.
Fig. 4 is the force analysis figure that polygon lattice grid of the present invention-rod structure formula sandwich plate resistance to compression enhances principle.
Fig. 5 is conventional grates sandwich plate core structure resistance to compression force analysis figure.
Fig. 6 is the force analysis that polygon lattice grid of the present invention-rod structure formula sandwich plate bending strength enhances principle
Figure.
Fig. 7 is conventional grates sandwich plate core structure bending resistance force analysis figure.
Fig. 8 be polygon lattice grid of the present invention-rod structure formula sandwich plate grid wall structure diagram, wherein a by
Two connectors form 3 triangle spaces, and b forms 4 triangle spaces by two connectors, and c forms 8 by 5 connectors
A triangle space.
Fig. 9 is the how arched prestressing force reinforcing rib of polygon lattice grid of the present invention-rod structure formula sandwich plate grid wall
Principle schematic (by taking single grid wall as an example).
It is numbered in figure：1st, lower panel, 2, polygon lattice grid-rod structure, 3, grid wall, 31, frame, 311, upper ledge
Frame, 312, lower frame, 313, connector, 32, space, 4, reinforcing prop, 5, reinforcing rib, 6, top panel, 7, grid triangular element,
9th, reinforcing rib A, 10, reinforcing rib B, 11, the anchoring piece of reinforcing rib A, 12, bending arch.
Specific embodiment
By taking quadrangle grill unit as an example, the polygon lattice grid-rod structure formula sandwich plate shows the embodiment of the present invention
It is intended to as shown in Figure 1 and Figure 2, including top panel 6, lower panel 1 and polygon lattice grid-rod structure 2.Wherein polygon
Lattice grid-rod structure 2 includes grid wall 3 and reinforcing prop 4, and reinforcing prop 4 is located at the intersection of grid wall 3.Grid wall 3 is lattice
Structure formula, the space 32 including frame 31 and in frame.Frame 31 is by upper side frame 311, lower frame 312 and positioned at top
Connector 313 between frame and lower frame forms, and the diameter or the length of side of reinforcing prop 4 are more than 3 thickness of grid wall.In upper side frame 311
Reinforcing rib is provided with in lower frame 312.
It is polygon to illustrate from the enhancing principle of compression strength, bending strength and double curvature arch prestressing force reinforcing rib separately below
The mechanical property of shape lattice grid-rod structure reinforcement sandwich plate.
The enhancing principle of compression strength：
According to stable structure theory it is found that under vertical uniform load q, the opening star section of grid wall intersection is (such as
Shown in Fig. 5) torsion is also easy to produce, cause grid wall that the outer bending deformation of plane can occur, at this time the outer evagination of the plane in the middle part of grid wall
Degree is maximum.Opening star section to cause grid wall intersection does not twist, then in grid wall intersection, setting adds
Qiang Zhu.And reinforcing prop is explained as follows the enhancing principle of compression strength：
By taking Fig. 4 grid walls A as an example, it can intuitively disclose very much to contain from geometry and strengthen rod structure moderate resistance
The secret of pressure：Positioned at the reinforcing prop of grid wall infall, being not only 4 area of a quarter reinforcing prop shared equally, (Fig. 4,90 ° are marked
Part) bending stiffness outside the plane of grid wall A is contributed, it actually shares equally and gives the reinforcing prop area of grid wall B and D (figure
4, θ2L,θ2RMark part) also the lateral bending stiffness of grid wall A is contributed.Analogize by this, reinforcing prop 4 is to grid wall A
The contribution of resistance moment there was only θ4L,θ4RIt is independent, and other θ2L,θ3L, θ2R,θ3RIt is shared respectively with grid wall B and D.Although
There is also shared phenomenon (Fig. 5, θ in infall for conventional grates structure2L,θ3L, θ2R,θ3R), but by comparing Fig. 4 and Fig. 5 it is found that
4 structure of reinforcing prop has following feature：1) area that infall shares significantly increases, i.e., target portion of five-pointed star institute in more Fig. 5
Point；2) and the area of the shared part is far from Y-axis, big to the contribution of the section resistance moment of Y-axis, therefore strengthens in bionical cellular board
Rod structure causes grid wall to have better lateral anti-bending strength.In addition from pull-down component stable theory it is found that in grid wall
After intersection's setting reinforcing prop, the opening star section of grid wall intersection then switchs to remain silent in original conventional grates structure
Rectangular section considerably increases the anti-torsion ability of grid wall intersection, and the grid wall being attached thereto can then undertake bigger
Vertical load.Thus illustrating the shared resistance to lateral bending mechanism of reinforcing prop realizes the invigoration effect to conventional grates structure.Due to passing
System polygon grid sandwich plate grid wall intersection easily twist, therefore grid wall have to also take on it is significant component of
Vertical load.But it being deformed since grid wall is also also easy to produce evagination outside plane in itself, the deformation particularly in the middle part of grid wall is maximum, because
This traditional polygon grid sandwich plate entire compression intensity is relatively low.And the present invention uses lattice or open web type grid wall, no
But the weight of entire sandwich plate is alleviated, and the ingenious position for eliminating grid wall compressive deformation amount maximum.It therefore can be notable
Reduce the deformity out of plane of grid wall construction.
It should be noted that：Using lattice or open web type grid wall in the present invention, main undertake is not played
The effect of vertical load.The vertical load of sandwich plate of the present invention is mainly undertaken by reinforcing prop, and lattice grid wall can undertake
A certain amount of vertical load, but as just a kind of " safety guarantee ", and it is not counted in the Compressive Bearing Capacity of sandwich plate of the present invention.
The enhancing principle of bending strength：
According to structure bending resistance principle it is found that sandwich plate is under Moment, on the one hand pass through the counter-force of upper and lower panel offer
Square carrys out resist torque effect, on the other hand carrys out resist torque effect also by the grid wall in core structure.When sandwich plate panel
When thickness and identical sandwich layer height, the afforded Moment of panel is identical.Therefore below by lattice in analysis sandwich layer
The bending resistance principle of grid wall is come the reason of explanation in the present invention using lattice grid wall and setting reinforcing rib.
Fig. 6 is the lattice grid wall of the present invention, and Fig. 7 is conventional interlayer plate core layer cell structure.In moment M0Under effect,
Grid wall upper end is in pressured state, and lower end is in tension state.At this point, the material stress of two kinds of situation Under The Grille pars intramuralis point
Not as shown on the right side of Fig. 6 and Fig. 7.Conventional interlayer plate core layer grid wall shows upper and lower ends stress greatly (region of high stress), intermediate
The characteristics of stress small (low stress area), as shown in Figure 7.Thus while position is solid construction among grid wall, but its material is strong
Spend the performance very little played so that stock utilization is relatively low.Therefore using lattice (or open web type) grid wall in the present invention, and
Descend both ends that reinforcing rib is set on it, in moment M0The lower stress distribution of effect is as shown in Figure 6：By the not high lattice of stock utilization
Position is changed to lattice among grid wall, and with reinforcing rib reinforcement, the M for making its generation additionalReinforcing ribBending resistance to provide sandwich plate is held
Carry power.Entire lattice grid wall only retains the region of high stress, makes full use of material property, and can generate good bending resistance in this way
Performance and globality.Two intermediate supports are the intensity in order to further improve lattice grid wall compression-side.And support shape
Formula can be there are many form, form including but not limited to shown in Fig. 8.
The enhancing principle of double curvature arch prestressing force reinforcing rib：
Construction technology is introduced first：
1. according to grid wall size, reinforcing rib 5 is fixed on the position as shown in the 9 of Fig. 9 and 10.
2. couple reinforcing rib A (in Fig. 9 at label 9) carry out pre- tensioning (engineering of the present invention in use, pre- tensioning reinforcing rib under
Side), pre- tensioning amount is determined according to requirement of engineering.
3. anchoring 11 is carried out to prestressing force reinforcing rib in the both sides of continuous grid wall (in Fig. 9 by taking single grid wall as an example).
4. pouring or pouring into the mixing composite material of resin and fiber, wait for its coagulation forming, by prestressing force reinforcing rib A from
It cuts at grid wall both ends so that the prestress application of pre- pretensioning is on grid wall.
Due to being applied with prestressing force in reinforcing rib A, reinforcing rib A is in itself in tension state, therefore in reinforcing rib A weeks
The grid wall enclosed is then in pressured state.Grid wall in order to balance the pressure that reinforcing rib A generates it, therefore grid wall upper end,
I.e. reinforcing rib B institutes position is then in tension state.Therefore entire grid wall shows small arch 12, such as Fig. 9 dotted lines institute
Show.When vertical uniform load q is when on grid wall, external load need to balance the moment of flexure provided by bending arch first, therefore can
Significantly improve the bending strength and breaking resistance of grid wall.
Above-mentioned is that a direction grid wall reinforcing rib applies prestressed situation.According to Fig. 1, when grill unit is four
During the shape of side, there are two directions for grid wall.Therefore reinforcing rib in both directions applies prestressing force respectively, can form hyperbolic
Encircle prestressing force reinforcing rib.This anti-bending strength and globality for will greatly improving sandwich plate of the present invention.
Therefore, in conclusion lattice grid wall in the present invention, reinforcing prop and how arched axis prestressing force reinforcing rib
The compressive property, anti-bending strength and globality of sandwich plate of the present invention are remarkably improved, finally obtains folder light-weight, that intensity is high
Laminate.Lattice grid-rod structure sandwich plate of the present invention is suitable for communications and transportation, furniture construction or even aerospace
Wait wide range of areas.In the case that use environment and mechanical property requirements are constant, the dosage of product and material can be substantially reduced, from
And achieve the purpose that environmentally protective, favorable influence can all be generated to social economy.
Claims (10)
1. a kind of polygon lattice grid-rod structure sandwich plate, including top panel, lower panel and the polygon of centre lattice
Formula grid-rod structure, the polygon lattice grid-rod structure include grid wall and are arranged on adding for grid wall intersection
Qiang Zhu, it is characterised in that：The grid wall is lattice, and the grid wall includes frame and the space in frame, institute
Frame is stated to be made of upper side frame, lower frame and the connector between upper side frame and lower frame, it is described reinforcement column diameter or
The length of side is more than grid wall thickness.
2. polygon lattice grid-rod structure sandwich plate according to claim 1, it is characterised in that：In the top
Reinforcing rib is provided in frame and lower frame.
3. polygon lattice grid-rod structure sandwich plate according to claim 2, it is characterised in that：The reinforcing rib
For the how arched prestressing force reinforcing rib formed by pre- tensioning.
4. polygon lattice grid-rod structure sandwich plate according to claim 1,2 or 3, it is characterised in that：The sky
Lattice are circular spaces or polygon space.
5. polygon lattice grid-rod structure sandwich plate according to claim 4, it is characterised in that：The polygon
Space is triangle space or quadrangle space.
6. polygon lattice grid-rod structure sandwich plate according to claim 1,2 or 3, it is characterised in that：It is described more
The polygon grid of side shape lattice grid-rod structure is triangular lattice, quadrangle grid or hexagon grid.
7. polygon lattice grid-rod structure sandwich plate according to claim 4, it is characterised in that：The reinforcing prop
For polygon column or cylinder.
8. polygon lattice grid-rod structure sandwich plate according to claim 7, it is characterised in that：The reinforcing prop
It is solid or hollow.
9. polygon lattice grid-rod structure sandwich plate according to claim 1, it is characterised in that：The top panel
And/or lower panel is surface plate or curved slab.
10. polygon lattice grid-rod structure sandwich plate according to claim 1, it is characterised in that：In sandwich plate
Edge sets the groove connected between aforementioned sandwich plate and protrusion.
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| CN201610903458.7A CN106427084B (en) | 2016-10-17 | 2016-10-17 | A kind of polygon lattice grid-rod structure sandwich plate |
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| CN201610903458.7A CN106427084B (en) | 2016-10-17 | 2016-10-17 | A kind of polygon lattice grid-rod structure sandwich plate |
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| CN106427084B true CN106427084B (en) | 2018-06-29 |
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| CN203805409U (en) * | 2014-04-24 | 2014-09-03 | 江苏建筑职业技术学院 | Corrugated web concrete composite sandwich bearing plate |
| CN104289865A (en) * | 2014-08-21 | 2015-01-21 | 青岛蓝图文化传播有限公司市南分公司 | Dot matrix truss structure function material and machining method thereof |
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