CN103510617B - Pyrometric cone pyramid space crystal network - Google Patents
Pyrometric cone pyramid space crystal network Download PDFInfo
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- CN103510617B CN103510617B CN201310456692.6A CN201310456692A CN103510617B CN 103510617 B CN103510617 B CN 103510617B CN 201310456692 A CN201310456692 A CN 201310456692A CN 103510617 B CN103510617 B CN 103510617B
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Abstract
The invention discloses a kind of pyrometric cone pyramid space crystal network, comprise basic array unit, basic array unit is made up of four isometric rod members, four isometric rod members comprise vertical bar and three oblique cross bars, oblique cross bar comprises the first oblique cross bar, second oblique cross bar and the 3rd oblique cross bar, first oblique cross bar, second oblique cross bar, the inner end node of the 3rd oblique cross bar is all connected with vertical bar bottom node, whole basic array unit is diamond crystal atomic structure of carbon shape, described basic array unit from top to bottom stratiform is arranged, all first oblique cross bar is parallel, all second oblique cross bar is parallel, all the 3rd oblique cross bar is parallel, the top node of the vertical bar of a basic array unit in its lower floor is all connected on the downside of the outer end node of each oblique cross bar, the outer end node pointing to all oblique cross bar of same position with outer end in layer is connected, whole pyrometric cone pyramid space crystal network is positive Rhizoma Sparganii taper.The present invention is that a kind of node is few, rigidity large, the pyrometric cone pyramid space crystal network of reasonable stress.
Description
Technical field
The present invention relates to a kind of new spatial network, new spatial crystal network, it uses for reference the rational structure component law of diamond crystal, and a kind of novel space structures form created, it is mainly used in building engineering field, specifically can be used for various needs in the steel building of large span, large space.
Background technology
Large span spatial structure is widely used in all kinds of public buildings such as factory building, stadiums, conference and exhibition center, theater, station and airport, especially in the activities such as international fair, the Olympic Games, the Asian Games, each state all shows the building science and technology level of this country with novel space structures, large-span space structure has become one of important symbol of a national building science and technology development level.
Up to now, scholar both domestic and external constantly brings forth new ideas in space structures field, various novel space structures form is proposed, unit according to composition is classified, these structures have 39 types, the polyhedron space frame structure that wherein up-to-date Liang Zhongshi China " the Water Cube " swimming center uses and a string gas girt strip structure.
Summary of the invention
The object of this invention is to provide that a kind of node is few, rigidity be large, the pyrometric cone pyramid space crystal network of reasonable stress.
For achieving the above object, the present invention adopts following technical scheme: pyrometric cone pyramid space crystal network, comprise basic array unit, basic array unit is made up of four isometric rod members, four isometric rod members comprise vertical bar and three oblique cross bars, oblique cross bar comprises the first oblique cross bar, second oblique cross bar and the 3rd oblique cross bar, first oblique cross bar, second oblique cross bar, the inner end node of the 3rd oblique cross bar is all connected with vertical bar bottom node, whole basic array unit is diamond crystal atomic structure of carbon shape, described basic array unit from top to bottom stratiform is arranged, all first oblique cross bar is parallel, all second oblique cross bar is parallel, all the 3rd oblique cross bar is parallel, the top node of the vertical bar of a basic array unit in its lower floor is all connected on the downside of the outer end node of each oblique cross bar, the outer end node pointing to all oblique cross bar of same position with outer end in layer is connected, whole pyrometric cone pyramid space crystal network is positive Rhizoma Sparganii taper.
Ridge bar is all connected with between masthead end node and the outer end node of the 3rd oblique cross bar between masthead end node and the outer end node of the second oblique cross bar and vertically between the vertical masthead end node of all basic array unit in pyrometric cone pyramid space crystal network lateral edges and the outer end node of the first oblique cross bar, vertically.
Base bar is all connected with between the outer end node of all the first oblique cross bars on pyrometric cone pyramid space crystal network base and the outer end node of the second oblique cross bar, between the outer end node of the 3rd oblique cross bar and the outer end node of the second oblique cross bar and between the outer end node of the first oblique cross bar and the outer end node of the 3rd oblique cross bar.
Connection between described whole node is hinged.
Connection between described whole node is all hinged by bolt sphere.
Pyrometric cone pyramid space crystal network of the present invention, has following beneficial effect:
1. in a basic array unit, with same node---the rod member number that vertically bottom node of bar is connected only has 4, and rod member number is few.As in the pyrometric cone pyramid space crystal network of 48m span, nodes is 1279, and unit number only needs 2234, and the ratio of unit number and nodes is about 1.75.If that sets up same geometric shape and yardstick just puts quadrangular pyramid latticed shell structure (form of structure the most frequently used in current engineering), nodes is all 1279, unit number then needs 4872, the ratio of unit number and nodes is about 3.81, is much higher than pyrometric cone pyramid space crystal network of the present invention.
2. as can be seen from static analysis result, structural section configuration is comparatively even, and integral rigidity is comparatively large, and reasonable stress, structure economics technical indicator is good.
3. node adopts and is articulated and connected, and making and the construction of node are simple.
4. in the basic array unit of pyrometric cone pyramid space crystal network, except ridge bar and base bar, vertical bar, the first oblique cross bar, the second oblique cross bar and the 3rd oblique cross bar identical length with, rod member length is uniform, is convenient to produce and transport.
5. architectural effect is penetrating attractive in appearance.
Pyrometric cone pyramid space crystal network of the present invention, it is a kind of new spatial network, or being called space crystal network, its theoretical foundation is as follows: diamond uniquely reaches the mineral of 10 grades in mohs hardness, is the material that occurring in nature is the hardest.Inner at diamond crystal, each carbon atom and around 4 carbon atoms are combined closely, and staggeredly fitly arrange, and form a kind of three-dimensional structure of densification, thus form firmly crystalline solid, as shown in Figure 1.The structure of this densification just, makes diamond have maximum hardness.It is naturally occurring one very rationally effective form of structure that diamond has this three-dimensional compact texture that maximum hardness shows that diamond crystal comprises.The present invention is the space component law using for reference diamond crystal structures, adopts the carbon atom in node and rod member replacement diamond crystal structures and atomic bond respectively, and carries out suitable spatial spread, construct a kind of new space structures form of excellent performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of basic array unit;
Fig. 2 is structural representation of the present invention;
Fig. 3 is that the present invention is for structural representation during 48m span.
Detailed description of the invention
Embodiment 1:
By the pyrometric cone pyramid space crystal network shown in Fig. 1 and Fig. 2, comprise basic array unit 7, basic array unit 7 is made up of four isometric rod members, four isometric rod members comprise vertical bar 2 and three oblique cross bars, oblique cross bar comprises the first oblique cross bar 3, second oblique cross bar 5 and the 3rd oblique cross bar 8, namely the end points of every root rod member forms the node of this rod member, first oblique cross bar 3, second oblique cross bar 5, the inner end node of the 3rd oblique cross bar 8 is all connected with vertical bar bottom node 9, whole basic array unit 7 is in diamond crystal atomic structure of carbon shape, vertical masthead end node 1 in each basic array unit 7, the outer end node 4 of first oblique cross bar, the outer end node 10 of second oblique cross bar and the outer end node 6 of the 3rd oblique cross bar lay respectively at four summits of a positive triangular pyramid, and vertically bar 2, first oblique cross bar 3, angle in second oblique cross bar 5 and the 3rd oblique cross bar 8 between any two rod members is 109 ° 28 '.Connection between node is all hinged by bolt sphere 100.
Described pyrometric cone pyramid space crystal network by basic array unit 7 from top to bottom stratiform arrange form, all first oblique cross bar 3 is parallel, all second oblique cross bar 5 is parallel, all the 3rd oblique cross bar 8 is parallel, the vertical masthead end node 1 of a basic array unit 7 in its lower floor is all connected on the downside of the outer end node of each oblique cross bar, the outer end node pointing to all oblique cross bar of same position with outer end in layer is connected, whole pyrometric cone pyramid space crystal network is positive Rhizoma Sparganii taper, also namely in pyramid.
Between the vertical masthead end node 1 of all basic array unit 7 in pyrometric cone pyramid space crystal network lateral edges and the outer end node 4 of the first oblique cross bar, ridge bar 101 is all connected with between masthead end node 1 and the outer end node 6 of the 3rd oblique cross bar between vertical masthead end node 1 and the outer end node of the second oblique cross bar 5 and vertically, allly be connected to ridge bar 101 conllinear between the outer end node 4 of vertical masthead end node 1 and the first oblique cross bar and form the Article 1 lateral edges of whole pyrometric cone pyramid space crystal network, allly be connected to ridge bar 101 conllinear between vertical masthead end node 1 and the outer end node of the second oblique cross bar 5 and form the Article 2 lateral edges of whole pyrometric cone pyramid space crystal network, allly be connected to ridge bar 101 conllinear between the outer end node 6 of vertical masthead end node 1 and the 3rd oblique cross bar and form the Article 3 lateral edges of whole pyrometric cone pyramid space crystal network.
All the first oblique cross bars on pyrometric cone pyramid space crystal network base are outer between end node 4 and the outer end node of the second oblique cross bar 5, 3rd oblique cross bar is outer is all connected with base bar 102 between end node 6 and the outer end node of the second oblique cross bar 5 and between the outer end node 4 of the first oblique cross bar and the outer end node 6 of the 3rd oblique cross bar, outer base bar 102 conllinear between end node 4 and the outer end node of the second oblique cross bar 5 of all first oblique cross bar also forms the Article 1 base of whole pyrometric cone pyramid space crystal network, base bar 102 conllinear between the outer end node 6 of all second outer end node of oblique cross bar 5 and the 3rd oblique cross bar also forms the Article 2 base of whole pyrometric cone pyramid space crystal network, base bar 102 conllinear outward between end node 6 of the outer end node 4 of all first oblique cross bar and the 3rd oblique cross bar also forms the Article 3 base of whole pyrometric cone pyramid space crystal network.Connection between described whole node is hinged, and connection all between node is all hinged by bolt sphere 100.
Embodiment 2:
The pyrometric cone pyramid space crystal network of the present embodiment as shown in Figure 3, on the basis of embodiment 1, and take structure as the pyrometric cone pyramid roof system of a 48m span, now adopt pyrometric cone pyramid space crystal network proposed by the invention, first structure is designed, spatial mesh structure design software MSTCAD is adopted to carry out modeling, its process is as follows: under spherical coordinate system by space a bit centered by, the extended mode of carbon atom in diamond crystal is copied to generate four, adjacent space node, generation unit between Centroid and four nodes, form a basic array unit 7, this is also an adamantine basic crystal unit, afterwards again centered by the new node generated, generate adjacent node and unit in the same way, outwards launch successively, be equivalent to diamond crystal unit constantly expand, choose suitable thickness, by the node of inside and element deletion, a kind of profile that finally can obtain as shown in Figure 2 is the pyrometric cone pyramid space crystal network of pyrometric cone pyramid space crystal network.Size of mesh opening is 3m × 3m, and grids height is 1.8371m, and rod member amounts to 2234, and wherein crestal line place rod member has 48, and length is 3m, and all the other rod member length are 1.8371m.The upper lower edge contacted with ground totally 84 nodes adopts three-dimensional hinged-support.Environment residing for structure, only considers uniform dead load 0.8kN/m
2, uniform live load 0.5kN/m
2and the dead load that computer is formed automatically.The load cases combination playing control action is: 1.2 quiet+1.4 live.Construction material selects Q345 steel, modulus of elasticity 2.06 × 10
11pa, density 7.85 × 10
3kg/m
3, design con-trol stress is 310Mpa.
Fully stressed design method is adopted to carry out Cross section Design and calculating.For the ease of understanding the performance of this space grid, quadrangular pyramid is just put and pyrometric cone pyramid space crystal network of the present invention contrasts with the most frequently used in current engineering, the condition such as material, load situation, sizing grid, support restraint that all the other two kinds of structures adopt is substantially identical, and result is as shown in table 1:
Table 1
From table 1, pyrometric cone pyramid space crystal network of the present invention is only 45.85% of square square pyramid space grid rod member number, is 41.29% of triangular pyramid space grid rod member number.Rod member steel using amount calculates according to developed area only has 19.56kg/m
2, be significantly less than square pyramid space grid and triangular pyramid space grid, consider the expenses such as processing, transport and installation, the total cost of this space grid will have larger reduction than square pyramid space grid and triangular pyramid space grid.Triangular pyramid space grid is plane grid structure.
According to the result designed by steel work company processing rod member and node.Can Assembly in pieces at height be adopted during site operation, set up full hall scaffold, each rod member is in place successively.Also on ground, every a slice can be assembled into merit, with the lifting means such as crane and jack, each burst lifting be put in place, more each burst is fitted together.After agent structure construction completes, lay purlin and the roofing materials such as glass, film on surface, complete the construction of total.Certainly, the present invention is not limited to above-mentioned form, and the connection between described whole node also can be and be rigidly connected, and can realize goal of the invention equally.
Claims (5)
1. a pyrometric cone pyramid space crystal network, it is characterized in that: comprise basic array unit, basic array unit is made up of four isometric rod members, four isometric rod members comprise vertical bar and three oblique cross bars, oblique cross bar comprises the first oblique cross bar, second oblique cross bar and the 3rd oblique cross bar, first oblique cross bar, second oblique cross bar, the inner end node of the 3rd oblique cross bar is all connected with vertical bar bottom node, whole basic array unit is diamond crystal atomic structure of carbon shape, described basic array unit from top to bottom stratiform is arranged, all first oblique cross bar is parallel, all second oblique cross bar is parallel, all the 3rd oblique cross bar is parallel, the top node of the vertical bar of a basic array unit in its lower floor is all connected on the downside of the outer end node of each oblique cross bar, the outer end node pointing to all oblique cross bar of same position with outer end in layer is connected, whole pyrometric cone pyramid space crystal network is positive Rhizoma Sparganii taper.
2. pyrometric cone pyramid space crystal network as claimed in claim 1, is characterized in that: be all connected with ridge bar between masthead end node and the outer end node of the 3rd oblique cross bar between masthead end node and the outer end node of the second oblique cross bar and vertically between the vertical masthead end node of all basic array unit in pyrometric cone pyramid space crystal network lateral edges and the outer end node of the first oblique cross bar, vertically.
3. pyrometric cone pyramid space crystal network as claimed in claim 1, is characterized in that: be all connected with base bar between the outer end node of all the first oblique cross bars on pyrometric cone pyramid space crystal network base and the outer end node of the second oblique cross bar, between the outer end node of the 3rd oblique cross bar and the outer end node of the second oblique cross bar and between the outer end node of the first oblique cross bar and the outer end node of the 3rd oblique cross bar.
4. the pyrometric cone pyramid space crystal network as described in any one of claim 1-3, is characterized in that: the connection between described whole node is hinged.
5. pyrometric cone pyramid space crystal network as claimed in claim 4, is characterized in that: the connection between described whole node is all hinged by bolt sphere.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480418A (en) * | 1981-07-14 | 1984-11-06 | Ettore Ventrella | Modular system for space grid structures |
| CN202081507U (en) * | 2011-06-03 | 2011-12-21 | 深圳市建筑设计研究总院有限公司 | Unit structure of single-layer folded surface building structure |
| CN202248250U (en) * | 2011-06-20 | 2012-05-30 | 林娟 | Body node aluminum alloy grid structure |
| CN102900154A (en) * | 2012-11-05 | 2013-01-30 | 秦雨舟 | Joint for unit type space truss |
-
2013
- 2013-09-30 CN CN201310456692.6A patent/CN103510617B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480418A (en) * | 1981-07-14 | 1984-11-06 | Ettore Ventrella | Modular system for space grid structures |
| CN202081507U (en) * | 2011-06-03 | 2011-12-21 | 深圳市建筑设计研究总院有限公司 | Unit structure of single-layer folded surface building structure |
| CN202248250U (en) * | 2011-06-20 | 2012-05-30 | 林娟 | Body node aluminum alloy grid structure |
| CN102900154A (en) * | 2012-11-05 | 2013-01-30 | 秦雨舟 | Joint for unit type space truss |
Non-Patent Citations (1)
| Title |
|---|
| "微观分子结构在宏观建筑结构中的应用的思考-金刚石晶胞仿生结构在大跨度网架中的应用";黄群等;《第四届湖北省土木工程专业大学生科技创新论坛论文集》;20110630;第260-261页第3节、图1-3 * |
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