CN104805903A - Parallel annular rib suspendome structure suitable for elliptical planes - Google Patents
Parallel annular rib suspendome structure suitable for elliptical planes Download PDFInfo
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- CN104805903A CN104805903A CN201510236875.6A CN201510236875A CN104805903A CN 104805903 A CN104805903 A CN 104805903A CN 201510236875 A CN201510236875 A CN 201510236875A CN 104805903 A CN104805903 A CN 104805903A
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Abstract
The invention discloses a parallel annular rib suspendome structure suitable for elliptical planes. The parallel annular rib suspendome structure comprises an upper single-layer reticulated shell structure and a lower tension cable rod system, wherein the upper single-layer reticulated shell structure comprises an outermost annular rib, a plurality of inner annular ribs and a plurality of radial ribs, the outermost annular rib is in a fitting ellipse shape which is formed by splicing a plurality of tangential circular arcs with the same lengths, the inner annular ribs are formed by the circular arcs of the outermost annular rib deflecting to the center of circle in the horizontal surface and then ascending upwards to form a plurality of ellipses, and corresponding nodes of the outermost annular rib and the inner annular ribs and corresponding nodes between the inner annular ribs are connected to form the radial ribs; the lower tension cable rod system comprises vertical support rods, annular cables and radial cables, the shape of each annular cable corresponds to the shape of the corresponding inner annular rib, each vertical support rod is connected with the corresponding inner annular rib and the corresponding annular cable, each radial cable is positioned in a vertical plane which is determined by the center of circle of the corresponding annular cable and an upper node and a lower node of the corresponding vertical support rod, and each radial cable is vertical to the circular arc of the corresponding annular cable. The parallel annular rib suspendome structure has the advantages that the structure is simple, the appearance is attractive, and the structure force transfer property is good.
Description
Technical field
The present invention relates to a kind of roof system of long span steel structure, more particularly, is that a kind of to be applicable to plane projection be oval parallel ring rib suspended-dome structure.
Background technology
Suspended-dome structure is a kind of hybrid structure system of tempering toughness with gentleness be made up of top single-layer latticed shell and tension in lower part cable-strut system, obtains development at full speed in recent years in the building engineering field of China.At present, when the plane projection of suspen-shell structure is oval, the stress and strain model of top single-layer latticed shell is irregular, radial cable and hoop rope out of plumb in tension in lower part cable-strut system, point of intersection needs two radial cables just can balance, and causes the Suo Li skewness of radial cable and hoop rope, drag-line quantity is many, distribution is mixed and disorderly, and joint structure is complicated, and structure transmission force property is poor.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of parallel ring rib suspended-dome structure being applicable to elliptic plane, structure is simple, attractive in appearance, and structure power transmission is good.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of parallel ring rib suspended-dome structure being applicable to elliptic plane, comprise top single-layer latticed shell and tension in lower part cable-strut system, described top single-layer latticed shell comprises outermost ring rib, some inner ring ribs and some radial ribs, described outermost ring rib is the ellipse of matching of being spliced by the isometric tangent arc of multistage, described inner ring rib be by each section of circular arc of outermost ring rib in horizontal plane to the center of circle offset after on rise the some ellipses formed, the corresponding node connected between the corresponding node of outermost ring rib and inner ring rib and some inner ring ribs forms some radial ribs, described tension in lower part cable-strut system comprises vertical strut, hoop rope and radial cable, the shape of described hoop rope is corresponding with inner ring rib, described vertical strut connects inner ring rib and hoop rope, the vertical plane that the upper and lower node that described radial cable is positioned at the hoop rope center of circle and vertical strut is determined, and described radial cable is perpendicular to hoop rope place circular arc.
Further, described outermost ring rib is isometric by four sections and the ellipse of tangent arc splicing matching.
Further, each ring rib between described outermost ring rib and inner ring rib or between some inner ring ribs is parallel to each other.
Further, described vertical strut perpendicular to hoop rope place plane, and often encloses vertical strut bottom node all in a plane.
Beneficial effect: advantage of the present invention is as follows:
(1) by the edge fitting to elliptic plane, ellipse is converted into four sections of tangent arcs, and then irregular for complexity ellipsoid stress and strain model problem is converted into the Grid partition problem of rule, can, easily by the top single-layer lattice shell of the mode formation rules such as rotary shell, make the stress and strain model of top single-layer lattice shell succinctly efficient;
(2) because every ring forms to rope by circular arc, make the radial cable in tension in lower part cable-strut system can be positioned at the vertical plane at place, the hoop rope center of circle, the center of circle of hoop rope is pointed in the plane projection of radial cable, accomplishes that each node in strut bottom only needs a radial drag-line to get final product stress balance;
(3) on same section of circular arc of hoop rope, hoop rope and radial cable internal force substantially identical, radial cable diameter and connected node all can be unified;
(4) overcome hoop rope internal force skewness in oval suspen-shell structure tension in lower part cable-strut system, oblique cord is innumerable and disordered, and the large and easy problem that lost efficacy of pressurized with circle oblique cord internal force difference, has played suspen-shell structure reasonable stress efficient feature attractive in appearance.
Accompanying drawing explanation
Fig. 1 is that outermost ring rib is by isometric tangent arc fitted ellipse schematic diagram;
Fig. 2 is that each ring of the present invention forms schematic diagram to rib;
Fig. 3 is plan view of the present invention;
Fig. 4 is the elevation of top of the present invention single-layer latticed shell;
Fig. 5 is the axonometric drawing of top of the present invention single-layer latticed shell;
Fig. 6 is the axonometric drawing of tension in lower part cable-strut system of the present invention;
Fig. 7 is elevation of the present invention;
Fig. 8 is sectional drawing of the present invention;
Fig. 9 is axonometric drawing of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
Be a kind of parallel ring rib suspended-dome structure being applicable to elliptic plane as shown in figs 1-9, comprise top single-layer latticed shell and tension in lower part cable-strut system, in drag-line after Shi Hanzhang, top monolayer net structure and tension in lower part cable-strut system form overall force structure.
Specific as follows, described top single-layer latticed shell comprises outermost ring rib 1, some inner ring ribs 2 and some radial ribs 3, described outermost ring rib 1 is the ellipse of matching of being spliced by multistage isometric tangent arc head and the tail, and about major axis and minor axis twin shaft symmetry, in the present invention, outermost ring rib 1 is isometric by four sections and the ellipse of tangent arc splicing matching.
As shown in Figure 1, in order to obtain two sections of isometric tangent arcs through ellipse long and short shaft end points, by numerical computation method, minor axis being got radius R 1, corresponding points A, major axis being got radius R 2, corresponding points B, connect A, B 2 and extend to C point, making AC=R1.With A point for the center of circle, R1 is radius, and draw circular arc a, with B point for the center of circle, R2 is radius, draws circular arc b, now namely obtains two sections of isometric and tangent circular arc a and b.Then 1/4 oval border of circular arc a and circular arc b and matching, and error is less, arrange all favourable to the using function of building and the bearing of dome.Other 3/4 borders obtain by mirror image.
Described inner ring rib 2 be after being offset to the center of circle in horizontal plane by each section of circular arc of outermost ring rib 1 on rise some ellipses that certain altitude formed, the corresponding node connected between the corresponding node of outermost ring rib 1 and inner ring rib 2 and some inner ring ribs 2 forms some radial ribs 3, each ring rib between described outermost ring rib 1 and inner ring rib 2 or between some inner ring ribs 2 is parallel to each other, and is all isocentric circular arc.Concrete grammar as shown in Figure 2, circular arc c is the cutting line of described top single-layer latticed shell along short-axis direction, circular arc c is divided into 7 sections, horizontal projection distance m between each Along ent of circular arc is the horizontal-shift distance between adjacent ring rib, each Along ent is the vertical lifting heights of inner ring rib 2 to the vertical height h of minor axis, and then joined end to end successively by the Along ent of hoop each section of circular arc the outermost ring rib 1 and inner ring rib 2 that obtain described top single-layer latticed shell.Adjacent ring is connected to form the radial rib 3 of described top single-layer latticed shell to the corresponding node of rib, outermost ring rib 1 or the inner ring rib 2 of described top single-layer latticed shell form triangle or quadrangle space lattice jointly with radial rib 3.
Described tension in lower part cable-strut system comprises vertical strut 4, hoop rope 5 and radial cable 6, the shape of described hoop rope 5 is corresponding with inner ring rib 2, described vertical strut 4 connects inner ring rib 2 and hoop rope 5, the locus of described hoop rope 5 is determined by the height of the vertical strut 4 of correspondence, and every ring is located in the same horizontal plane to rope 5, the vertical plane that the upper and lower node that described radial cable 6 is positioned at hoop rope 5 center of circle and vertical strut 4 is determined, and described radial cable 6 is perpendicular to hoop rope 5 place circular arc.Described vertical strut 4 perpendicular to hoop rope 5 place plane, and often encloses vertical strut 4 bottom node all in a plane.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. one kind is applicable to the parallel ring rib suspended-dome structure of elliptic plane, comprise top single-layer latticed shell and tension in lower part cable-strut system, it is characterized in that: described top single-layer latticed shell comprises outermost ring rib (1), some inner ring ribs (2) and some radial ribs (3), described outermost ring rib (1) is the ellipse of matching of being spliced by the isometric tangent arc of multistage, described inner ring rib (2) be by each section of circular arc of outermost ring rib (1) in horizontal plane to the center of circle offset after on rise the some ellipses formed, the corresponding node connected between outermost ring rib (1) and the corresponding node of inner ring rib (2) and some inner ring ribs (2) forms some radial ribs (3),
Described tension in lower part cable-strut system comprises vertical strut (4), hoop rope (5) and radial cable (6), the shape of described hoop rope (5) is corresponding with inner ring rib (2), described vertical strut (4) connects inner ring rib (2) and hoop rope (5), the vertical plane that the upper and lower node that described radial cable (6) is positioned at hoop rope (5) center of circle and vertical strut (4) is determined, and described radial cable (6) is perpendicular to hoop rope (5) place circular arc.
2. a kind of parallel ring rib suspended-dome structure being applicable to elliptic plane according to claim 1, is characterized in that: described outermost ring rib (1) is isometric by four sections and the ellipse of tangent arc splicing matching.
3. a kind of parallel ring rib suspended-dome structure being applicable to elliptic plane according to claim 1, is characterized in that: each ring rib between described outermost ring rib (1) and inner ring rib (2) or between some inner ring ribs (2) is parallel to each other.
4. a kind of parallel ring rib suspended-dome structure being applicable to elliptic plane according to claim 1, it is characterized in that: described vertical strut (4) perpendicular to hoop rope (5) place plane, and often encloses vertical strut (4) bottom node all in a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236875.6A CN104805903A (en) | 2015-05-11 | 2015-05-11 | Parallel annular rib suspendome structure suitable for elliptical planes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510236875.6A CN104805903A (en) | 2015-05-11 | 2015-05-11 | Parallel annular rib suspendome structure suitable for elliptical planes |
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| CN104805903A true CN104805903A (en) | 2015-07-29 |
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| CN201510236875.6A Pending CN104805903A (en) | 2015-05-11 | 2015-05-11 | Parallel annular rib suspendome structure suitable for elliptical planes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064582A (en) * | 2015-09-08 | 2015-11-18 | 天津大学建筑设计研究院 | Suspended-dome structure capable of arranging prestressed hoop cables in blocks |
| CN105544833A (en) * | 2016-02-03 | 2016-05-04 | 东南大学 | Suspended dome |
| CN111502098A (en) * | 2020-04-15 | 2020-08-07 | 东南大学建筑设计研究院有限公司 | Suspended dome structure suitable for square boundary and calculation method thereof |
-
2015
- 2015-05-11 CN CN201510236875.6A patent/CN104805903A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 杜文风等: "《空间结构》", 30 April 2008 * |
| 钟翔山: "《冷作钣金工实用技能手册》", 31 January 2014 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064582A (en) * | 2015-09-08 | 2015-11-18 | 天津大学建筑设计研究院 | Suspended-dome structure capable of arranging prestressed hoop cables in blocks |
| CN105544833A (en) * | 2016-02-03 | 2016-05-04 | 东南大学 | Suspended dome |
| CN111502098A (en) * | 2020-04-15 | 2020-08-07 | 东南大学建筑设计研究院有限公司 | Suspended dome structure suitable for square boundary and calculation method thereof |
| CN111502098B (en) * | 2020-04-15 | 2021-09-03 | 东南大学建筑设计研究院有限公司 | Suspended dome structure suitable for square boundary and calculation method thereof |
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Application publication date: 20150729 |