CN101614052A - Regular hexagon steel-concrete combined hollow double lattice floor and preparation method - Google Patents
Regular hexagon steel-concrete combined hollow double lattice floor and preparation method Download PDFInfo
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Abstract
The invention discloses a kind of regular hexagon steel-concrete combined hollow double lattice floor and preparation method, superstructure is formed orthohexagonal six limits of superstructure by the formed framework of hexagon post net, its catercorner length L is 30 meters≤L≤48 meter, in the framework of hexagon post net, be connected with steel-concrete composite open-web beam, and steel-concrete composite open-web beam each limit of parallelepiped respectively intersects in twos, form steel-big equilateral triangle grid of concrete composite open-web beam that inner three-dimensional is intersected, the structure height of steel-concrete composite open-web beam is got 1/20th～24 of catercorner length L; Be provided with the close girt strip that three-dimensional is intersected in each big equilateral triangle grid, the close girt strip that three-dimensional is intersected is formed little equilateral triangle grid, is coated with the concrete building panel on big or small equilateral triangle grid.Advantages such as the present invention has that structural integrity is good, structure height is little, institute takes up space less, concrete and rolled steel dosage are less are particularly suitable for building the large span polygon plane, the multi-layer multi hall is used.
Description
Technical field
The present invention relates to a kind of regular hexagon steel-concrete combined hollow double lattice floor and preparation method, belong to the multistory reinforced concrete floor system technical field of large span.
Background technology
China's economic construction and social related industry develop rapidly, drive the development of cultural undertakings, and the multi-purpose hall of large-scale theatrical performances and activity is more and more many; Town site is more and more urgent along with saving, the construction in large-sized multiple layer culture hall also more and more presents importance, two dimensional analysis from multi-functional (containing performance and meeting) halls of 600～1200, the regular hexagon plane is than square and rectangle plane good, when regular hexagon diagonal span L=36 meters, the hall area is 842 square metres, the position about 650 of can choosing a place to give a banquet; When diagonal span L=48 meter, 1496 square metres of hall areas, the position about 1200 of can choosing a place to give a banquet.As three layers of this buildings, hexagon long-span floor system (two-layer), because its service load big (more than every square metre of 3.5kn), structure model selection is very important, adopts conventional reinforced concrete frame structure, not only cause fat beams and columns, the surge of concrete and rolled steel dosage, during as diagonal span L=36 meter, Vierendeel girder cross section 1000 * 3000 (L/12) smallest cross-sectional also reaches 800 * 2400 (L/15), not only concrete and rolled steel dosage are big, and structure height almost accounts for one deck superstructure height.If adopt steel concrete three-dimensional ribbed grid-like plate, during 1.8 meters of the triangle length of sides, because three dimensions is stressed, structure height h=1m (L/36), close girt strip cross section 400 * 1000, every square metre of 75cm of concrete converting thickness, the dead load design load reaches every square metre more than 2250 kilograms, though structure height is minimum, concrete and rolled steel dosage are big, cost is high, also non-preferred plan.If adopt hexagon steel-concrete three-dimensional composite space truss structure, steel using amount descends, but the still very big H=2.4 rice of structure height～2.25 meters, i.e. H=(L/15～L/16), and steel work is antirust, fire prevention and ceiling furred ceiling expense increase.For regular hexagon diagonal large span (30 meters≤L≤48 meters) superstructure, its superstructure area is by 842 square metres～1496 square metres multi-functional literature and art hall, select the floor structural form of a kind of " safety, reasonable, advanced, economy ", impel the structural engineering scientific and technical personnel to explore the new structure system, satisfy the needs of economy, cultural construction development.
Summary of the invention
The objective of the invention is to: provide a kind of rational in infrastructure, structure height is less and concrete and less regular hexagon steel-concrete combined hollow double lattice floor and the preparation method of rolled steel dosage, to overcome the deficiencies in the prior art.
The present invention is achieved in that the preparation method of regular hexagon steel-concrete combined hollow double lattice floor of the present invention is, the flat shape of superstructure is a regular hexagon, form orthohexagonal six limits of superstructure by the formed framework of hexagon post net, this orthohexagonal catercorner length L is 30 meters≤L≤48 meter, in the framework of hexagon post net, be connected with steel-concrete composite open-web beam, and steel-concrete composite open-web beam each limit of parallelepiped respectively intersects in twos, form steel-big equilateral triangle grid of concrete composite open-web beam that inner three-dimensional is intersected, each limit length of side of this big equilateral triangle grid equates that with hexagon post net spacing the structure height of steel-concrete composite open-web beam that three-dimensional is intersected is got 1/20th～24 of hexagon catercorner length L; In each big equilateral triangle grid, in-situ casting steel concrete three-dimensional is intersected close girt strip in the big equilateral triangle grid of forming according to the last girt strip of steel-concrete composite open-web beam, form the little equilateral triangle grid of reinforced concrete ribbed beam that three-dimensional is intersected, the little equilateral triangle grid of reinforced concrete ribbed beam that big equilateral triangle grid that the structure of whole superstructure is made up of steel-concrete composite open-web beam and the three-dimensional intersection that is connected are formed and the constant triangle double-grid structure of structure height that forms in big equilateral triangle grid.
When making the steel of big equilateral triangle grid-concrete composite open-web beam, adopt the cast steel form of troughing plate as girt strip under the laced beam, and on steel form, break the pin back cast-in-site steel concrete of wire-tiing and form the following rib of steel-concrete composite open-web beam, the last girt strip of steel-concrete composite open-web beam is intersected by the rectangular reinforced concrete three-dimensional to be formed, between last girt strip and the following girt strip every an intersegmental distance with the reinforced concrete member formation steel-concrete combined hollow type macrolattice that is connected as a single entity.
When little equilateral triangle grid of reinforced concrete ribbed beam that rib connection making three-dimensional is intersected on above-mentioned big equilateral triangle grid and floor plate, adopt the template of ardealite formwork as close girt strip of cast and concrete building panel, and pour into a mould close girt strip and concrete building panel by the mode of cast-in-site steel concrete, the close girt strip of ardealite formwork and moulding by casting and concrete building panel are connected as one.
A kind of regular hexagon steel-concrete combined hollow double lattice floor of the present invention is: the flat shape of superstructure is a regular hexagon, and orthohexagonal six limits of superstructure are made up of the formed framework of hexagon post net, and the orthohexagonal catercorner length L that is made up of hexagon post net is 30 meters≤L≤48 meter; Be connected with steel-concrete composite open-web beam in hexagon post net, steel-concrete composite open-web beam three-dimensional intersection is formed big equilateral triangle grid, and the structure height H of every steel-concrete composite open-web beam is all 1/20th～24 of regular hexagon catercorner length L mutually; In each big equilateral triangle grid, be provided with the reinforced concrete ribbed beam that is connected with girt strip on steel-concrete composite open-web beam, and the little equilateral triangle grid of reinforced concrete ribbed beam is formed in the interconnection of close girt strip three-dimensional, is being coated with the concrete building panel on steel-concrete composite open-web beam and the close girt strip and on big equilateral triangle grid of being formed and the little triangular mesh.
Above-mentioned big equilateral triangle grid size determines according to regular hexagon diagonal span, if the diagonal span L=and during 36m, each length of side=36/4=9m of big equilateral triangle grid then has 24 big equilateral triangle grids in regular hexagon; If during L=48m, each length of side=48/6=8m of big equilateral triangle grid then is provided with the big equilateral triangle grid that 54 length of sides are 8m in regular hexagon.
The length of side of above-mentioned little equilateral triangle grid be big equilateral triangle grid the length of side 1/5.
Steel-concrete composite open-web beam is connected to form by last girt strip, following girt strip and connecting elements, is provided with on an empty stomach between last girt strip, following girt strip and connecting elements, is connected with troughing plate in the following girt strip bottom of steel-concrete composite open-web beam.
Troughing plate connects as one by the concrete of the following girt strip of high-strength bolt and steel-concrete composite open-web beam.
Bottom surface with the concrete building panel on the surface of close girt strip all is coated with the ardealite formwork that uses as cast template.
The empty stomach of steel-concrete composite open-web beam is shaped as octagonal empty stomach.
Owing to adopted technique scheme, the big equilateral triangle grid that whole superstructure of the present invention only is made up of for 1/20th～24 the steel-concrete composite open-web beam of its span (being orthohexagonal catercorner length) its structure height and be that the triangle double-grid structure that the little equilateral triangle grid formed of 0.25～0.35 meter close girt strip and floor structure are combined to form is formed by structure height, and on the following girt strip of steel-concrete composite open-web beam, be provided with troughing plate, form steel plate and concrete combination girt strip member (main tension) down, and in order to reduce dead load, also be convenient to the layout of indoor horizontal air-conditioning pipe, its belly hollows out and forms octagon on an empty stomach, and its dead load is descended significantly; Because the following girt strip of steel of the present invention-concrete composite open-web beam is troughing plate and reinforced concrete combined structure member, so the reduced moment of inertia value of its laced beam improves about about 15% than the non-combined member reduced moment of inertia of following girt strip value.Because dead load of the present invention reduces, the rigidity of structure (EI) improves, and under the condition of guaranteeing the rigidity of structure and intensity, has reached the purpose of saving construction timber, reducing construction costs.In addition, according to actual mode of occupation and analysis of experiments, for multi-functional (containing performance and meeting) hall from 600～1200, the plane of superstructure is the regular hexagon plane than square and rectangle plane good, when its orthohexagonal diagonal span is 36 meters, its hall area is 842 square metres, can choose a place to give a banquet the position about 650; When its linea angulata span is 48 meters, 1496 square metres of hall areas, can choose a place to give a banquet the position about 1200.The present invention makes the structure three-dimensional space-load under the prerequisite of " safety, reasonable, advanced, economy ", structure height is little, the space good integrity, and it is little to build main material (concrete, steel) consumption, and it is simple to construct.Big equilateral triangle grid and little equilateral triangle grid that structure of the present invention forms are superimposed, formation has the double-grid ceiling modeling structure that enriches the rhythm, this new spatial composite grid structure shows it is one of multilayer building cover structure optimised form of present regular hexagon diagonal large span (being that the diagonal span is 30～50 meters) according to experimental result.Therefore, the present invention compared with prior art, the present invention not only has rational in infrastructure, structural strength is higher, structure height is less, the advantage that shared architectural space is less, but also have concrete and the less advantage of rolled steel dosage, and because the present invention has adopted on the external surface of the two sides of girt strip on the steel-concrete composite open-web beam and close girt strip and the bottom surface of concrete building panel all is coated with the ardealite formwork that uses as cast template, this has not only reduced construction costs, realize twice laid, but also had the advantage of fire prevention and minimizing ceiling furred ceiling fitting-out work amount.The present invention is particularly suitable for the multi-functional cultural hall of large-sized multiple layer of polygon plane building large span and uses.
Description of drawings
Fig. 1 is a superstructure plane structure schematic diagram of the present invention;
Fig. 2 is the I portion partial structurtes enlarged diagram of Fig. 1;
Fig. 3 is the A Abandon sectional structure schematic diagram of Fig. 2;
Fig. 4 is the B Fen sectional structure schematic diagram of Fig. 2;
Fig. 5 is the C Pi sectional structure schematic diagram of Fig. 2.
The specific embodiment
Embodiments of the invention: when the large span multi-layer multi culture hall of building 3～5 layers, its superstructure preferably adopts the preparation method of regular hexagon steel-concrete combined hollow double lattice floor of the present invention to make, the flat shape that is about to superstructure is made as regular hexagon, adopt the hexagon reinforced concrete frame structure to form orthohexagonal six limits of this regular hexagon superstructure, and to make this orthohexagonal catercorner length L (being span) be 30 meters≤L≤48 meter, in the regular hexagon of the sealing of forming by the hexagon reinforced concrete frame, three directions along the corresponding both sides of parallel this regular hexagon are arranged steel-concrete composite open-web beam respectively, during as L=36m, on each direction by the equidistant three steel-concrete composite open-web beam that is arranged in parallel, make the mutual interconnection in the regular hexagon of sealing of this nine steel-concrete composite open-web beam form 24 big equilateral triangle grids, the height H of every steel-concrete composite open-web beam is made into the same, it highly is controlled at 1/20th～24 of regular hexagon catercorner length (being span) L (is L/24≤H≤L/20); Equidistant respectively on three directions in each big equilateral triangle grid, by parallel this every limit of big equilateral triangle grid then four close girt strips are set, totally ten two close girt strips, 12 close girt strips in each big equilateral triangle grid intersect mutually at grade to connect and intersect with the last girt strip of steel-concrete composite open-web beam and connect to form 25 little equilateral triangle grids, and the height h making of every close girt strip is identical and be controlled at 0.25～0.35 meter; The concrete building panel covered on the big equilateral triangle grid be made up of steel-concrete composite open-web beam and close girt strip and the little equilateral triangle grid promptly make regular hexagon steel-concrete combined hollow double lattice floor; When making steel-concrete composite open-web beam, adopt the cast template of troughing plate as girt strip under the laced beam, and on troughing plate, accomplish fluently pin in advance, pour into a mould steel-concrete composite open-web beam by the mode of cast-in-site steel concrete then, the following girt strip of the steel-concrete composite open-web beam of troughing plate and cast is connected as one, obtain steel-concrete composite open-web beam thereby make; When making close girt strip and concrete building panel, adopt ardealite formwork or gypsum formwork template as close girt strip of cast and concrete building panel, and pour into a mould close girt strip and concrete building panel by the mode of cast-in-site steel concrete, the close girt strip and the concrete building panel of ardealite formwork or gypsum formwork and moulding by casting are connected as one, can play function of heat insulation like this.
When concrete construction is implemented, structure according to regular hexagon steel-concrete combined hollow double lattice floor of the present invention is made, promptly in factory, process earlier troughing plate 4, it is standby to install lengthening high-strength bolt or the pin 5 used as pin then on troughing plate 4, the flat shape of superstructure is made as regular hexagon, this regular hexagon is interconnected by reinforced concrete frame structure to be formed, in regular hexagon, adopt the 1 three-dimensional interconnection of steel concrete composite open-web beam to form big equilateral triangle grid, hexagonal catercorner length (being span) L is controlled at the scope of 30 meters≤L≤48 meter; Big equilateral triangle grid size determines according to regular hexagon diagonal span, if the diagonal span L=and during 36m, each length of side=36/4=9m of big equilateral triangle grid then has 24 big equilateral triangle grids in regular hexagon; If during L=48m, each length of side=48/6=8m of big equilateral triangle grid then is provided with the big equilateral triangle grid that 54 length of sides are 8m in regular hexagon; When diagonal span L=36m, it is three in each direction that steel concrete composite open-web beam 1 three-dimensional is intersected, reinforced concrete frame structure on totally nine steel concrete composite open-web beams 1 and six limits of regular hexagon respectively the three-dimensional interconnection form 24 big equilateral triangle grids, and the height H of every steel-concrete composite open-web beam 1 made equate and be 1/20th～24 of regular hexagon catercorner length L, the structure of its steel-concrete composite open-web beam 1 is by last girt strip 1-1, following girt strip 1-2 and connecting elements 1-3 are cast for holistic steel concrete and connect to form, when making steel-concrete composite open-web beam 1, at last girt strip 1-1, be shaped as octagonal empty stomach 1-4 by equidistant setting between following girt strip 1-2 and the connecting elements 1-3, and the cast template of the troughing plate 4 of the high-strength bolt of lengthening or pin 5 as the following girt strip 1-2 of steel-concrete composite open-web beam 1 arranged on will be in advance, make down that its concrete and troughing plate 4 connect as one behind the girt strip 1-2 moulding by casting; Then in each big equilateral triangle grid of forming by steel-concrete composite open-web beam 1, be provided with four close girt strips 2 by equidistant respectively on three directions that are parallel to this every limit of big equilateral triangle grid, make in each big equilateral triangle grid 12 close girt strips 2 respectively at grade three-dimensional intersect to form the little equilateral triangle grid of reinforced concrete ribbed beam, 25 little equilateral triangle grids are arranged in each big equilateral triangle grid; The structure height h that forms the close girt strip 2 of little equilateral triangle grid is controlled at 0.25～0.35 meter scope, the length of side of little equilateral triangle grid be big equilateral triangle grid the length of side 1/5 (for example: when the length of side of big positive triangle gridding is 9m, the length of side of then little equilateral triangle grid is 9m/5=1.8m, when being 8m as the big triangle length of side, the length of side of the little equilateral triangle grid of 5 five equilibriums is 8m/5=1.6m.25 little equilateral triangle grids are arranged in the big equilateral triangle grid of the 9m length of side.According to regular hexagon diagonal span difference, superstructure is formed the double-grid structure by varying number and highly different large and small equilateral triangle grids); On the steel concrete composite open-web beam 1 of forming big equilateral triangle grid and little equilateral triangle grid and close girt strip 2, cover the cast-in-place concrete building panel 3 that gets then, when the close girt strip 2 of casting reinforced concrete and concrete building panel 3, adopt ardealite formwork 6 as cast template, ardealite formwork 6 and the close girt strip 2 of moulding by casting and the concrete of concrete building panel 3 are connected as one, can play function of heat insulation like this; Simultaneously also can and hang Thistle board, to strengthen insulation, the heat insulation effect of superstructure in the bottom of little equilateral triangle grid.
Above-mentioned ardealite formwork 6 can adopt traditional gypsum formwork to replace.
Claims (10)
1. the preparation method of a regular hexagon steel-concrete combined hollow double lattice floor, it is characterized in that: the flat shape of superstructure is a regular hexagon, form orthohexagonal six limits of superstructure by the formed framework of hexagon post net, this orthohexagonal catercorner length L is 30 meters≤L≤48 meter, in the framework of hexagon post net, be connected with steel-concrete composite open-web beam, and steel-concrete composite open-web beam each limit of parallelepiped respectively intersects in twos, form steel-big equilateral triangle grid of concrete composite open-web beam that inner three-dimensional is intersected, each limit length of side of this big equilateral triangle grid equates that with hexagon post net spacing the structure height of steel-concrete composite open-web beam that three-dimensional is intersected is got 1/20th～24 of hexagon catercorner length L; In each big equilateral triangle grid, in-situ casting steel concrete three-dimensional is intersected close girt strip in the big equilateral triangle grid of forming according to the last girt strip of steel-concrete composite open-web beam, form the little equilateral triangle grid of reinforced concrete ribbed beam that three-dimensional is intersected, the little equilateral triangle grid of reinforced concrete ribbed beam that big equilateral triangle grid that the structure of whole superstructure is made up of steel-concrete composite open-web beam and the three-dimensional intersection that is connected are formed and the constant triangle double-grid structure of structure height that forms in big equilateral triangle grid.
2. the preparation method of regular hexagon steel-concrete combined hollow double lattice floor according to claim 1, it is characterized in that: when making the steel of big equilateral triangle grid-concrete composite open-web beam, adopt the cast steel form of troughing plate as girt strip under the laced beam, and on steel form, break the pin back cast-in-site steel concrete of wire-tiing and form the following rib of steel-concrete composite open-web beam, the last girt strip of steel-concrete composite open-web beam is intersected by the rectangular reinforced concrete three-dimensional to be formed, between last girt strip and the following girt strip every an intersegmental distance with the reinforced concrete member formation steel-concrete combined hollow type macrolattice that is connected as a single entity.
3. the preparation method of regular hexagon steel-concrete combined hollow double lattice floor according to claim 1, it is characterized in that: when little equilateral triangle grid of reinforced concrete ribbed beam that rib connection making three-dimensional is intersected on big equilateral triangle grid and floor plate, adopt the template of ardealite formwork as close girt strip of cast and concrete building panel, and pour into a mould close girt strip and concrete building panel by the mode of cast-in-site steel concrete, the close girt strip of ardealite formwork and moulding by casting and concrete building panel are connected as one.
4. regular hexagon steel-concrete combined hollow double lattice floor, it is characterized in that: the flat shape of superstructure is a regular hexagon, and orthohexagonal six limits of superstructure are made up of the formed framework of hexagon post net, and the orthohexagonal catercorner length L that is made up of hexagon post net is 30 meters≤L≤48 meter; In hexagon post net, be connected with steel-concrete composite open-web beam (1), steel-concrete composite open-web beam (1) three-dimensional intersection is formed big equilateral triangle grid, and the structure height H of every steel-concrete composite open-web beam (1) is all 1/20th～24 of regular hexagon catercorner length L mutually; In each big equilateral triangle grid, be provided with the reinforced concrete ribbed beam (2) that is connected with the last girt strip of steel-concrete composite open-web beam (1), and the little equilateral triangle grid of reinforced concrete ribbed beam is formed in close girt strip (2) three-dimensional interconnection, upward and on big equilateral triangle grid of being formed and the little triangular mesh is coated with concrete building panel (3) at steel-concrete composite open-web beam (1) and close girt strip (2).
5. regular hexagon steel-concrete combined hollow double lattice floor according to claim 4, it is characterized in that: big equilateral triangle grid size is determined according to regular hexagon diagonal span, if the diagonal span L=during 36m, each length of side=36/4=9m of big equilateral triangle grid then has 24 big equilateral triangle grids in regular hexagon; If during L=48m, each length of side=48/6=8m of big equilateral triangle grid then is provided with the big equilateral triangle grid that 54 length of sides are 8m in regular hexagon.
6. regular hexagon steel-concrete combined hollow double lattice floor according to claim 4 is characterized in that: the length of side of little equilateral triangle grid be big equilateral triangle grid the length of side 1/5.
7. regular hexagon steel-concrete combined hollow double lattice floor according to claim 4, it is characterized in that: steel-concrete composite open-web beam (1) is connected to form by last girt strip (1-1), following girt strip (1-2) and connecting elements (1-3), between last girt strip (1-1), following girt strip (1-2) and connecting elements (1-3), be provided with (1-4) on an empty stomach, be connected with troughing plate (4) in following girt strip (1-2) bottom of steel-concrete composite open-web beam (1).
8. regular hexagon steel-concrete combined hollow double lattice floor according to claim 7 is characterized in that: troughing plate (4) connects as one by the concrete of high-strength bolt (5) with the following girt strip (1-2) of steel-concrete composite open-web beam (1).
9. regular hexagon steel-concrete combined hollow double lattice floor according to claim 4 is characterized in that: the bottom surface with concrete building panel (3) on the surface of close girt strip (2) all is coated with the ardealite formwork (6) that uses as cast template.
10. regular hexagon steel-concrete combined hollow double lattice floor according to claim 7 is characterized in that: the empty stomach (1-4) of steel-concrete composite open-web beam (1) be shaped as octagonal empty stomach.
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| CN106121109A (en) * | 2016-07-29 | 2016-11-16 | 东南大学 | Large span right hexagonal steel-concrete cellular hollow sandwich panel ceiling for storied building and manufacture method |
| CN109403524A (en) * | 2018-09-10 | 2019-03-01 | 湖南工业大学 | Honeycomb type hollow sandwich panel ceiling for storied building and production method equipped with U-shaped steel composite structure |
| CN111852005A (en) * | 2020-08-14 | 2020-10-30 | 中铁建工集团有限公司 | A pin-connected panel regularization mould for concrete latticed shell structure |
| CN115492375A (en) * | 2022-09-21 | 2022-12-20 | 中国一冶集团有限公司 | Vibratile polygonal aluminum formwork for cast-in-situ open-web grid and construction method |
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