CN105804304A - Steel-FRP combined spatial curved surface cable-arch grid structure - Google Patents
Steel-FRP combined spatial curved surface cable-arch grid structure Download PDFInfo
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- CN105804304A CN105804304A CN201610319098.6A CN201610319098A CN105804304A CN 105804304 A CN105804304 A CN 105804304A CN 201610319098 A CN201610319098 A CN 201610319098A CN 105804304 A CN105804304 A CN 105804304A
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- drag
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- arch
- skene
- steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/14—Suspended roofs
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a steel-FRP combined spatial curved surface cable-arch grid structure, which is characterized by comprising a first stay cable, wherein the first stay cable is a catenary, and is connected with a plurality of circular arches at intervals, and the openings of the circular arches are arranged downwards; the first stay cable is connected with the highest point of the corresponding circular arche, and the tangential direction of a joint of the first stay cable and the corresponding circular arch is vertical to the plane of the corresponding circular arch; a plurality of second stay cables are symmetrically connected onto the circular arches at the left and right sides of the first stay cable at an equal interval and are connected with the plurality of circular arches. The first stay cable and the second stay cables are made from a flexible fiber reinforced composite material, and the circular arches are made of a steel material. The steel-FRP combined spatial curved surface cable-arch grid structure has high overall specific strength and strong corrosion resistance.
Description
Technical field
The invention belongs to space structure engineering field, particularly relate to the space curved surface rope arch grid of a kind of steel-FRP combination
Structure, it is mainly used in the structure that gymnasium, exhibition center, waiting hall for airplanes etc. need large space, wide span house cap.
Background technology
Large-span space structure is often a city or even the important symbol of country, not only represents this city and state
The construction industry development level of family, more represents this city and the development of civilization degree of country.Countries in the world are to large span space
The development of structure technology, particularly research and development and engineer applied to novel large-span space structure system give height always
Attention.Along with high speed development and the raising of overall national strength of Chinese national economy, the social need of large-span space structure and
Engineer applied increases year by year, and space structure is at various large-scale stadiums, theater, Convention and Exhibition Center, departure hall, all kinds of
The building such as industrial premises is widely used.
The load-bearing material that at present large-span space structure uses is mainly steel, a small amount of structure uses armored concrete,
Aluminium alloy, timber.According to the unit classification of composition structural system, have 39 kinds of versions.Wherein, containing cable elements big across
The roof structure weight that degree beam-string structure system is built is the lightest, and technical merit is superb, specifically includes cable net structure, beam string, opens
String truss, Cable dome, suspen-shell structure, tension integral structure etc..
Fibre reinforced composites (Fiber Reinforced Polymer is called for short FRP) are that (carbon is fine by fibrous material
Dimension, glass fibre etc.) and matrix material (unsaturated polyester (UP), epoxy resin and phenolic resin etc.) mix according to a certain percentage after warp
Cross the extruding of special mould, drawing and the high-performance shaped material that formed.The tensile strength of FRP is apparently higher than reinforcing bar, with high tensile steel wire
Tensile strength is similar, and usually 2 times of reinforcing bar even reach 10 times.Meanwhile, the specific strength of FRP is the highest, the most usually said
High-strength light, therefore use FRP material can effectively alleviate dead load, its weight is generally the 20% of steel.In durability and
Corrosion resistance aspect, the performance of FRP material is the most superior.FRP with the mechanical property of its excellence and adapt to modern project structure to
Greatly across, towering, heavily loaded, the demand of lightweight development, it is becoming widely adopted in science of bridge building, all kinds of civil buildings, long-span space
In structure, underground engineering, it is the strategic nonmetal structure materials first developed of present various countries.
Summary of the invention
The present invention seeks to as solving the load-bearing property of current large-span space structure, rigidity, stability condition each other and
The problem that can not simultaneously meet and propose the space curved surface rope of a kind of overall steel-FRP that specific strength is high, corrosion resistance is strong combination
Arch network.
The present invention solves that the problems referred to above are adopted the technical scheme that: the space curved surface rope arch net of a kind of steel-FRP combination
Lattice structure, including the first drag-line, described first drag-line is that catenary is arranged, and connecting at equal intervals on the first drag-line has multiple circular arc
Arch, described skene arch opening is all downward, and described first drag-line all peaks with corresponding skene arch are connected, described first drag-line
Corresponding skene arch place plane it is perpendicular to, in the first drag-line left and right sides with the tangential direction of corresponding skene arch connection
Skene arch on symmetrical, connect and have multiple second drag-line, described second drag-line to be all connected with multiple skene arches at equal intervals；Described
One drag-line, the second drag-line all use flexible fiber to strengthen composite, and multiple skene arches all use iron and steel material quality.
Further, including multiple cylinder sleeve clips, described cylinder sleeve clip is fixed on by high intensity tight fixed bolt and draws with first
Bottom the skene arch that rope, the second drag-line position are corresponding, described first drag-line, the second drag-line are through corresponding cylinder sleeve clip
It is fixed on bottom skene arch.
Further, described first drag-line, the cross section of the second drag-line are circle, and the cross section of multiple skene arches is work
Font or annular.
Further, the interval between described adjacent circular arc arch is more than the interval between adjacent second drag-line.
Flexible fiber is used to strengthen the first drag-line of composite and the second drag-line, in vertical length direction at length direction
The principle analysis of the skene arch of upper employing iron and steel material quality:
In various structural systems, optimal tension structure form is drag-line, and compressed structure form is arch；Although FRP material
Tensile strength apparently higher than steel, but its elastic modelling quantity is on the low side, Compressive Performance is high less than steel, simultaneously takes account of drag-line and exists
Under Gravitative Loads, its curve form is catenary, so drag-line uses flexible FRP material make and be alongst arranged to
The form of catenary；The skene arch of iron and steel material quality is under the common active force of deadweight, external load and drag-line, mainly by vertically long
Degree side upwards pressure；The cross section of skene arch uses the form of circular arc line can reduce the moment of flexure in cross section, and its cross section can also be
I shape.
The drag-line using flexible FRP material to make alongst is arranged to the form of catenary, thus fully sends out
Wave the feature of the resistance to tension of FRP material, it is ensured that this network has enough intensity, compared with original steel network
Substantially reduce deadweight；The skene arch using iron and steel material quality is primarily subjected to vertical length side and upwards pressure, and arranges along short, uses
In ensureing that this network has enough rigidity and stability.Steel, FRP bi-material give full play to respective excellent by combination
Gesture, improves holistic resistant behavior and the corrosion resistance of this network, extends service life.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention；
Fig. 2 is the structure for amplifying schematic diagram of cylinder sleeve clip in Fig. 1.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As it is shown in figure 1, the present invention includes the first drag-line 2, described first drag-line 2 is arranged for catenary, on the first drag-line 2
Connecting at equal intervals and have multiple skene arch 3, described skene arch 3 opening is all downward, described first drag-line 2 all with corresponding skene arch 3
Peak is connected, tangent line (tangent line of the first drag-line 2) direction of described first drag-line 2 and corresponding skene arch 3 connection
Being perpendicular to corresponding skene arch 3 place plane, in the skene arch 3 of first drag-line 2 left and right sides, symmetry, at equal intervals connection have
Multiple second drag-lines 1, described second drag-line 1 is all connected with multiple skene arches 3, the i.e. second drag-line 1 also for catenary arrange or
Approximation catenary is arranged, and the interval between described skene arch 3 is more than the interval between the second drag-line 1；Described first drag-line 2,
The cross section of two drag-lines 1 is circle, and described first drag-line the 2, second drag-line 1 all uses flexible fiber to strengthen composite, many
Individual skene arch 3 all uses iron and steel material quality.
As in figure 2 it is shown, the cross section of multiple skene arches 3 is I shape 4 in the present embodiment, with the first drag-line 2, second
It is fixed with cylinder sleeve clip 6 by high intensity tight fixed bolt 5 bottom the skene arch 3 that drag-line 1 position is corresponding, described first drag-line 2,
Second drag-line 1 is fixed on the bottom of skene arch 3 through corresponding cylinder sleeve clip 6.
As it is shown in figure 1, be the three-dimensional structure diagram of the space curved surface rope arch network of a kind of steel-FRP combination, in order to enter one
Step studies its performance, and to be modeled simulation experiment as follows: uses 7 Pin flexibility FRP material drag-lines (to include the first drag-line 2, second draw
Rope 1) and 9 Pin steel skene arches 3 combine, its length direction span is 90 meters, and the span being perpendicular to length direction is 60 meters,
Rise is 20 meters, and four limits use fixed-hinged support.
Use CAD to be modeled, then model is imported space Structure Analysis software MstCAD and is designed, be subsequently introduced
Carrying out stability analysis in general finite element software ANSYS, wherein material information is as follows:
Respectively to all steel type, full FRP type, space curved surface rope combined for steel-FRP arch network computational analysis, analysis result
As follows:
From result, vertical rigidity combined for steel-FRP is 1.07 times of all steel type, is 0.63 times of full FRP type.Stably facing
Boundary's load aspect, critical load buckling coefficient combined for steel-FRP is 0.82 times of all steel type, is 1.29 times of full FRP type.
Comprehensive Correlation can be seen that steel-FRP is combined and compares with all steel type, and both bearing capacitys and stability are close,
But the weight of all steel type is combined for steel-FRP 1.81 times, can effectively alleviate it by combination and conduct oneself with dignity and give full play to
Steel, the performance of FRP bi-material.Steel-FRP is combined and compared with full FRP type, and its bearing capacity and stability have and significantly carries
Rise.It follows that the version of the present invention is to set up, and structure is arranged scientific and reasonable, and stress performance is excellent, conscientiously may be used
OK, application prospect is good.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", "front", "rear",
The orientation of the instruction such as "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be only for ease of describing the present invention and simplifying the device describing rather than indicating or infer indication
Or element must have specific orientation, for specific azimuth configuration and operation, thus it is not intended that in protecting the present invention
The restriction held.
If being used herein the word such as " first ", " second " to if limiting parts, those skilled in the art should
This is known: " first ", the use of " second " are intended merely to facilitate the description present invention and simplify description, as the most additionally stated,
Above-mentioned word does not has special implication.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent,
But these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (4)
1. the space curved surface rope arch network of a steel-FRP combination, it is characterised in that including the first drag-line, described first draws
Rope is that catenary is arranged, and connecting at equal intervals on the first drag-line has multiple skene arch, and described skene arch opening is all downward, described the
One drag-line all peaks with corresponding skene arch are connected, the tangential direction of described first drag-line and corresponding skene arch connection
Being perpendicular to corresponding skene arch place plane, in the skene arch of the first drag-line left and right sides, symmetry, at equal intervals connection have many
Individual second drag-line, described second drag-line is all connected with multiple skene arches；Described first drag-line, the second drag-line all use flexible fiber
Strengthening composite, multiple skene arches all use iron and steel material quality.
The space curved surface rope arch network of steel-FRP the most according to claim 1 combination, it is characterised in that include multiple
Cylinder sleeve clip, described cylinder sleeve clip is fixed on corresponding with the first drag-line, the second drag-line position by high intensity tight fixed bolt
Bottom skene arch, described first drag-line, the second drag-line are fixed on bottom skene arch through corresponding cylinder sleeve clip.
The space curved surface rope arch network of steel-FRP the most according to claim 1 and 2 combination, it is characterised in that described
First drag-line, the cross section of the second drag-line are circle, and the cross section of multiple skene arches is I shape or annular.
The space curved surface rope arch network of steel-FRP the most according to claim 3 combination, it is characterised in that described adjacent
Interval between skene arch is more than the interval between adjacent second drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319098.6A CN105804304A (en) | 2016-05-16 | 2016-05-16 | Steel-FRP combined spatial curved surface cable-arch grid structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319098.6A CN105804304A (en) | 2016-05-16 | 2016-05-16 | Steel-FRP combined spatial curved surface cable-arch grid structure |
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| Publication Number | Publication Date |
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| CN105804304A true CN105804304A (en) | 2016-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610319098.6A Pending CN105804304A (en) | 2016-05-16 | 2016-05-16 | Steel-FRP combined spatial curved surface cable-arch grid structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115081097A (en) * | 2022-08-22 | 2022-09-20 | 中国建筑第六工程局有限公司 | Method for finding shape of single-arch space cable combined structure |
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| CN2229749Y (en) * | 1995-05-12 | 1996-06-26 | 李国祯 | Frame for greenhouse |
| CN2697188Y (en) * | 2003-11-24 | 2005-05-04 | 深圳市三鑫特种玻璃技术股份有限公司 | Saddle shaped glass daylight top supported by cable net node |
| CN2719960Y (en) * | 2004-07-12 | 2005-08-24 | 高维成 | Tensioned beam truss hanging light combined roofing structure |
| CN2835407Y (en) * | 2005-10-26 | 2006-11-08 | 尚仁杰 | Cable-supported multi-span continuous oblique-crossing saddle-shape cable net |
| CN201574485U (en) * | 2009-11-13 | 2010-09-08 | 中国海洋大学 | Framework of building/ structure |
| ES2588200A1 (en) * | 2015-04-29 | 2016-10-31 | Universidade Da Coruña | Expanding structural system of bows and sliding rods (Machine-translation by Google Translate, not legally binding) |
| CN205742678U (en) * | 2016-05-16 | 2016-11-30 | 河南大学 | A kind of space curved surface rope arch network of steel-FRP combination |
-
2016
- 2016-05-16 CN CN201610319098.6A patent/CN105804304A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2229749Y (en) * | 1995-05-12 | 1996-06-26 | 李国祯 | Frame for greenhouse |
| CN2697188Y (en) * | 2003-11-24 | 2005-05-04 | 深圳市三鑫特种玻璃技术股份有限公司 | Saddle shaped glass daylight top supported by cable net node |
| CN2719960Y (en) * | 2004-07-12 | 2005-08-24 | 高维成 | Tensioned beam truss hanging light combined roofing structure |
| CN2835407Y (en) * | 2005-10-26 | 2006-11-08 | 尚仁杰 | Cable-supported multi-span continuous oblique-crossing saddle-shape cable net |
| CN201574485U (en) * | 2009-11-13 | 2010-09-08 | 中国海洋大学 | Framework of building/ structure |
| ES2588200A1 (en) * | 2015-04-29 | 2016-10-31 | Universidade Da Coruña | Expanding structural system of bows and sliding rods (Machine-translation by Google Translate, not legally binding) |
| CN205742678U (en) * | 2016-05-16 | 2016-11-30 | 河南大学 | A kind of space curved surface rope arch network of steel-FRP combination |
Non-Patent Citations (1)
| Title |
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| 张自杰: "《建筑结构》", 31 May 1999, 中国建材工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115081097A (en) * | 2022-08-22 | 2022-09-20 | 中国建筑第六工程局有限公司 | Method for finding shape of single-arch space cable combined structure |
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Application publication date: 20160727 |