CN104060759B - A kind of truss string structure of built-in oblique guy rope - Google Patents

A kind of truss string structure of built-in oblique guy rope Download PDF

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Publication number
CN104060759B
CN104060759B CN201410258884.0A CN201410258884A CN104060759B CN 104060759 B CN104060759 B CN 104060759B CN 201410258884 A CN201410258884 A CN 201410258884A CN 104060759 B CN104060759 B CN 104060759B
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rope
guy rope
string structure
oblique guy
truss string
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CN104060759A (en
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顾盛
郭君渊
曹洁
唐柏鉴
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Guangxi Hongyun Design Co., Ltd.
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KUNSHAN CONSTRUCTION ENGINEERING QUALITY TESTING CENTER
Jiangsu University of Science and Technology
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Abstract

The invention discloses a kind of truss string structure of built-in oblique guy rope, comprise upper chord, web member, node sleeve pipe, last quarter rope, oblique guy rope, described upper chord is connected by welding to pass through mutually with web member, the lower end of described web member is connected with node sleeve pipe, described last quarter rope is separately fixed on the support node of two ends through two ends after each node sleeve pipe, described oblique guy rope is arranged symmetrically with, the lower end of oblique guy rope is fixed on support node, the upper end of oblique guy rope is connected with stationary nodes of winding up, described stationary nodes of winding up can for any one intersection point apart from upper chord and web member in the truss string structure span scope of adjacent support node 1/1 to three/5th.Form by last quarter rope and oblique guy rope the pre-stress system that can provide two-way drag in the present invention, wind suction load can be adapted to, the present invention also has that rolled steel dosage is few, simple structure, cost of manufacture are low, performance good, the advantage such as easy of constructing.

Description

A kind of truss string structure of built-in oblique guy rope
Technical field
The invention belongs to the truss string structure that large span opens string roof structure technical field, the truss string structure of oblique guy rope is particularly set in a kind of body.
Background technology
Truss-string-structure is taught by Nihon University M.Saitoh the earliest and was proposed in 1986, this structure is a kind of novel hybridization roof system being different from traditional structure, it is mainly by the self-balancing combination construction formed as the truss member that winds up of press-bending parts, lower edge flexible cable and intermediate pressurised strut, is also more successful large-span prestressed space structure body in the development of a kind of Mixed Architecture.
The feature of truss-string-structure be system simple, stressed clear and definite, form of structure is various, has given full play to the advantage of hard and soft material, and manufactures, transports, constructs simple and convenient, has therefore obtained good application.In recent years, the Large-span Truss String Structure roof structure being representative with Pudong International Airport in Shanghai departure lounge, Guangzhou International Exhibition, Harbin International Conference and Exhibition Center, Beijing agricultural exhibition center, National Indoor Stadium has become China's landmark building.
At present, researcher in this field generally believes that the force-mechanism of truss-string-structure is by making truss member generation allowance for camber of winding up to lower edge flexible cable Shi Hanzhang, the final amount of deflection of structure under load action is reduced, and the truss that winds up that intermediate pressurised strut is formed adopts arched girder or truss arch, born by lower edge flexible cable in the horizontal thrust of load action lower arch, to alleviate horizontal thrust that arch produces bearing and to reduce the horizontal movement of sliding support.Truss-string-structure can play high strong tensile property of wringing, and improves integrally-built stress performance, bending component and tension member is learnt from other's strong points to offset one's weaknesses, collaborative work, thus reaches self-balancing.
Although this truss-string-structure of the prior art has many advantages, but still there is several larger problem: (1) truss-string-structure is a kind of wind load sensitive structure, for the long span building in modern times, the truss-string-structure of the light Roof system of general employing, in wind load larger area or typhoon region, lower edge cable slack or pressurized may be there is and the situation of deactivating under wind suction effect, its self equilibrium systems does not also exist, degree of safety is lost, so often need heavily to guarantee structure not loss of stability and degree of safety under wind suction effect roofing is standby, therefore existing truss-string-structure is not suitable for the effect of wind suction, (2) in prior art, truss string structure last quarter rope ball is formed by cast steel, needs special processing, is difficult to be made into standard component, (3) truss string structure bottom of the prior art only has rope ball, and during stretch-draw, lower-chord panel point should have device control cord ball to move left and right, and guarantees that rope ball produces displacement upwards again, and construction auxiliary equipment increases, and difficulty of construction is larger.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of truss string structure of built-in oblique guy rope is provided, comprise upper chord 1, web member 2, node sleeve pipe 3 and support node 6, described web member 2 head and the tail connect in turn, its upper end is connected by welding to pass through mutually with described upper chord 1, its lower end is connected with described node sleeve pipe 3, described support node 6 is separately positioned on below the two ends of described truss string structure, described truss string structure also comprises two-way drag pre-stress system, described two-way drag pre-stress system comprises last quarter rope 4, stationary nodes of winding up 7 and oblique guy rope 5, wherein, described last quarter rope 4 is in turn through each node sleeve pipe 3, its two ends are separately fixed on described support node 6, described upper chord 1 respectively arranges stationary nodes 7 of winding up described on the position of both side ends, each described support node 6 is connected with stationary nodes 7 of winding up described in two by described oblique guy rope 5, composition isosceles triangle.
Further, described node sleeve pipe 3 is built with one for supporting the fixed pulley 8 of described last quarter rope 4, and described last quarter rope 4 is through fixed pulley 8.
Further, described node sleeve pipe 3 is ball shape structure.
Further, described last quarter rope 4 with the prestressing force value criterion of oblique guy rope 5 is: at Load Combination F=F prestressing force+ F dead load+ (F live load-F wind inhales loadunder the effect of)/2, the vertical deformation of described truss-string-structure is close to zero.
Further, described in stationary nodes 7 of winding up be the intersection point of described upper chord 1 and web member 2, the distance between described intersection point and adjacent support node 6 is the span length of described truss string structure 1/1 to three/5th.
Further, described upper chord 1 is inverted v-shaped, and described last quarter rope 4 is V-shaped.
Further, described web member 2 is symmetrical about the center line of described truss string structure.
Beneficial effect of the present invention:
1. the Performance comparision under wind suction load action
Truss-string-structure of the prior art needs to carry out at roofing standby heavy, to guarantee that negative wind screw-down structure does not lose stable and degree of safety, but adopts the standby heavy method of roofing both to increase steel using amount, again the burden of heavy structure when structure bears conventional vertical live load, and truss string structure of the present invention is furnished with oblique guy rope, the Main Function of oblique guy rope is exactly under the effect of wind suction, prevent structure from producing excessive allowance for camber, thus guarantee that lower edge drag-line does not relax, when another formal structure bears conventional vertical live load, oblique guy rope also can provide resiliency supported for truss string structure, its working mechanism is as follows: last quarter rope and oblique guy rope form the pre-stress system that has two-way drag after pre-stretch-draw, structure is under the vertical live load effect of routine, the internal force of last quarter rope increases, for web member provides elastomeric bearing, the internal force of oblique guy rope reduces, in other words tiltedly the internal force increment of guy rope points to the upper end of oblique guy rope, this internal force increment is for resisting live load straight down, oblique guy rope equals to provide resiliency supported to truss string structure, under wind suction effect, last quarter rope internal force reduces, namely the upper top power of original part last quarter rope to web member reduces, the internal force of oblique guy rope increases, good restraining function is had to the reversal deformation of structure.
2. joint structure compares
In prior art, truss string structure last quarter rope ball is formed by cast steel, needs special processing, is difficult to be made into standard component; And the fixed pulley of truss string structure of the present invention can be made into standard component, can by common mechanical factory process, and expense is lower, simple structure is easy.
3 construction and installation complexities compare:
Truss string structure bottom of the prior art only has rope ball, and during stretch-draw, lower-chord panel point should have device control cord ball to move left and right, and guarantees that rope ball produces displacement upwards again, and construction auxiliary equipment increases, and difficulty of construction is larger; And truss string structure last quarter rope of the present invention passes through fixed pulley power transmission to node sleeve pipe, and then upper top power is passed to web member, its frictional force reduces greatly, lower node is swung natively little, add lower-chord panel point degree of freedom to be retrained by corner taper web member, without the need to increasing servicing unit to lower-chord panel point during stretch-draw last quarter rope, thus greatly reduce operating expenses.
Therefore, the present invention compared with prior art, has the advantage that rolled steel dosage is low, cheap, structural stability is good and be applicable to wind suction load.
Accompanying drawing explanation
Fig. 1 is the structural representation arranging the truss string structure of oblique guy rope in a kind of body of the present invention;
Fig. 2 is the top view arranging the truss string structure of oblique guy rope in a kind of body of the present invention;
Fig. 3 is that web member of the present invention passes through with upper chord the structural representation be connected mutually;
Fig. 4 is the A-A sectional drawing of Fig. 1;
Fig. 5 is the B-B sectional drawing of Fig. 1;
Fig. 6 is the C-C sectional drawing of Fig. 1;
Fig. 7 is connected formed lower-chord panel point structural representation with node sleeve pipe for web member of the present invention;
Fig. 8 is the schematic diagram adopting truss string structure roof system of the present invention.
In figure: 1-upper chord; 2-web member; 3-node sleeve pipe; 4-last quarter rope; The oblique guy rope of 5-; 6-support node; 7-winds up stationary nodes; 8-fixed pulley.
Detailed description of the invention
For making the object of the embodiment of the present invention and technical scheme clearly, below in conjunction with the accompanying drawing of the embodiment of the present invention, the technical scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under without the need to the prerequisite of creative work, all belongs to the scope of protection of the invention.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
The implication of the "and/or" described in the present invention refers to respective individualism or both simultaneous situations include interior.
The implication of " inside and outside " described in the present invention refers to relative to equipment itself, in the direction of sensing equipment inside is, otherwise is outward, but not the specific restriction to equipment mechanism of the present invention.
When the implication of " left and right " described in the present invention refers to reader just to accompanying drawing, the left side of reader is a left side, and the right of reader is the right side, but not the specific restriction to equipment mechanism of the present invention.
The indirect connection that can be the direct connection between parts also can be by other parts between parts of the implication of " connection " described in the present invention.
Fig. 1 is the structural representation arranging the truss string structure of oblique guy rope in a kind of body of the present invention; Fig. 2 is the top view arranging the truss string structure of oblique guy rope in a kind of body of the present invention; Fig. 3 is that web member of the present invention passes through with upper chord the structural representation be connected mutually; Fig. 4 is the A-A sectional drawing of Fig. 1; Fig. 5 is the B-B sectional drawing of Fig. 1; Fig. 6 is the C-C sectional drawing of Fig. 1; Fig. 7 is connected formed lower-chord panel point structural representation with node sleeve pipe for web member of the present invention; Fig. 8 is the schematic diagram adopting truss string structure roof system of the present invention.
Be illustrated in figure 1 the structural representation that the truss string structure of oblique guy rope is set in a kind of body of the present invention.This truss string structure comprises upper chord 1, web member 2, node sleeve pipe 3, last quarter rope 4, oblique guy rope 5, upper chord 1 is connected (see Fig. 3) by welding to pass through mutually with web member 2, the lower end of web member 2 is connected (see Fig. 7) with node sleeve pipe 3, last quarter rope 4 is separately fixed on two ends support node 6 through two ends after each node sleeve pipe 3, oblique guy rope 5 is arranged symmetrically with (see Fig. 2), the lower end of oblique guy rope 5 is fixed on support node, the upper end of oblique guy rope 5 is connected with stationary nodes 7 of winding up, stationary nodes of winding up 7 can for any one intersection point apart from upper chord in the truss string structure span scope of adjacent support node 1/1 to three/6th five 1 and web member 2.
As shown in Figure 7, node sleeve pipe 3 is ball shape structure, is equipped with one for supporting the fixed pulley 8 of last quarter rope 4 in each node sleeve pipe 3, and last quarter rope 4 is through fixed pulley 8 (see Fig. 5).
The basic functional principle arranging the truss string structure of oblique guy rope in a kind of body of the present invention is as follows: to last quarter rope 4 and tiltedly guy rope 5 with structure under " prestressing force+dead load+(live load ﹣ wind inhales load)/2 " acting in conjunction, structure vertical deformation is criterion Shi Hanzhang close to zero, structure is made to produce appropriate allowance for camber under " prestressing force+dead load " acting in conjunction, the benefit of this criterion is that the total displacement making structure under " prestressing force+dead load+live load " acting in conjunction downward is roughly equal with structure total displacement upwards under " prestressing force+dead load+wind inhales load " acting in conjunction, realize distributing rationally thus reaching the object of saving steel of resource, under " prestressing force+dead load " state, last quarter rope 4 and oblique guy rope 5 form the pre-stress system that can provide two-way drag, structure is under the vertical live load effect of routine, the internal force of last quarter rope increases, for web member provides elastomeric bearing, the internal force of oblique guy rope reduces, in other words tiltedly the internal force increment of guy rope points to the upper end of oblique guy rope, this internal force increment is for resisting live load straight down, oblique guy rope equals to provide resiliency supported to truss string structure, under wind suction effect, last quarter rope internal force reduces, namely the upper top power of original part last quarter rope to web member reduces, the internal force of oblique guy rope increases, good restraining function is had to the reversal deformation of structure.
The truss string structure arranging oblique guy rope in a kind of body of the present invention can form space roof system as shown in Figure 8.
These are only embodiments of the present invention, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.

Claims (7)

1. the truss string structure of a built-in oblique guy rope, comprise upper chord (1), web member (2), node sleeve pipe (3) and support node (6), described web member (2) head and the tail connect in turn, its upper end is connected by welding to pass through mutually with described upper chord (1), its lower end is connected with described node sleeve pipe (3), described support node (6) is separately positioned on below the two ends of described truss string structure, it is characterized in that, described truss string structure also comprises two-way drag pre-stress system, described two-way drag pre-stress system comprises last quarter rope (4), stationary nodes of winding up (7) and oblique guy rope (5), wherein, described last quarter rope (4) is in turn through each node sleeve pipe (3), its two ends are separately fixed on described support node (6), described upper chord (1) respectively arranges stationary nodes (7) of winding up described on the position of both side ends, each described support node (6) is connected with stationary nodes (7) of winding up described in two by described oblique guy rope (5), composition isosceles triangle.
2. the truss string structure of a kind of built-in oblique guy rope according to claim 1, it is characterized in that, described node sleeve pipe (3) is built with one for supporting the fixed pulley (8) of described last quarter rope (4), and described last quarter rope (4) is through fixed pulley (8).
3. the truss string structure of a kind of built-in oblique guy rope according to claim 2, it is characterized in that, described node sleeve pipe (3) is ball shape structure.
4. the truss string structure of a kind of built-in oblique guy rope according to claim 3, is characterized in that, described last quarter rope (4) with the prestressing force value criterion of oblique guy rope (5) is: at Load Combination F=F prestressing force+ F dead load+ (F live load-F wind inhales loadunder the effect of)/2, the vertical deformation of described truss-string-structure is close to zero.
5. a kind of truss string structure of built-in oblique guy rope according to claim 3 or 4, it is characterized in that, the intersection point that described stationary nodes of winding up (7) is described upper chord (1) and web member (2), the distance between described intersection point and adjacent support node (6) is the span length of described truss string structure 1/1 to three/5th.
6. the truss string structure of a kind of built-in oblique guy rope according to claim 5, it is characterized in that, described upper chord (1) is inverted v-shaped, and described last quarter rope (4) is V-shaped.
7. the truss string structure of a kind of built-in oblique guy rope according to claim 6, is characterized in that, described web member (2) is symmetrical about the center line of described truss string structure.
CN201410258884.0A 2014-06-11 2014-06-11 A kind of truss string structure of built-in oblique guy rope Active CN104060759B (en)

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CN112982794A (en) * 2021-02-08 2021-06-18 清华大学建筑设计研究院有限公司 Prestressed beam resisting wind suction force

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JP3522541B2 (en) * 1998-07-27 2004-04-26 正尚 磯▲崎▼ Truss beams
CN2492631Y (en) * 2001-08-28 2002-05-22 深圳市三鑫特种玻璃技术股份有限公司 Truss with prestressed self-balance rope
CN100424301C (en) * 2005-12-22 2008-10-08 高维成 Pulley type truss-string arc-scaffolding combined structural system
CN201347586Y (en) * 2008-12-17 2009-11-18 广州市设计院 Large-span prestressed cable-supported truss structure
CN101942883B (en) * 2009-07-09 2013-12-25 .贵州大学 Roof with rectangular plane, super-long span and prestressed space tube truss structure and manufacturing method
CN101793094A (en) * 2010-03-11 2010-08-04 潮峰钢构集团有限公司 Multiple suspended truss gradual tensioning construction method
CN201865240U (en) * 2010-10-28 2011-06-15 中国民航大学 Double-cable truss string structure with damping spring levers
CN103696536B (en) * 2013-12-27 2016-02-10 天津大学建筑设计研究院 A kind of V-arrangement truss
CN203924483U (en) * 2014-06-11 2014-11-05 江苏科技大学 A kind of truss string structure of built-in oblique guy rope

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Effective date of registration: 20180905

Address after: 538000 123, Renmin Road, Fangcheng District, Fangchenggang, the Guangxi Zhuang Autonomous Region

Patentee after: Guangxi Hongyun Design Co., Ltd.

Address before: 212003 Mengxi Road, Jingkou District, Zhenjiang, Jiangsu Province, No. 2

Co-patentee before: Kunshan Construction Engineering Quality Testing Center

Patentee before: Jiangsu University of Science and Technology