CN103397740A - Three-dimensional beam string structure - Google Patents

Three-dimensional beam string structure Download PDF

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Publication number
CN103397740A
CN103397740A CN2013103374172A CN201310337417A CN103397740A CN 103397740 A CN103397740 A CN 103397740A CN 2013103374172 A CN2013103374172 A CN 2013103374172A CN 201310337417 A CN201310337417 A CN 201310337417A CN 103397740 A CN103397740 A CN 103397740A
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face
line
lower edge
winds
strut
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CN2013103374172A
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CN103397740B (en
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蔡建国
丁一凡
冯健
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Southeast University
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Southeast University
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Abstract

The invention discloses a three-dimensional beam string structure. Two adjacent surface structures located at different beam string structures are a surface P and a surface N. Multiple inclined cables are arranged between the surface P and the surface N. The inclined cables are inclinedly arranged relatively to purlines. One end of each one of the inclined cables is hinged to an upper beam of the surface P and the other end of the inclined cable is fixedly connected to a lower end of a support rod of the surface N. Compared with the prior art, the three-dimensional beam string structure improves an inclined cable utilization rate. After the purlines lose efficacy, through connection between the inclined cable and a beam string structure adjacent to the inclined cable, the integrality of the three-dimensional beam string structure does not disappear immediately; collapse resistance is improved; continuous collapse is prevented; potential safety hazard is eliminated; and the structural integrality is greatly improved. The inclined cables can effectively solve the problem that out-of-plane unstability is produced after efficacy losing of inhaul cables at a side of a bottom chord of the existing beam string structure.

Description

A kind of Spatial Beam String Structure
Technical field
The present invention relates to a kind of Spatial Beam String Structure, belong to a kind of building structure.
Background technology
The application of field of civil engineering large-span steel is more and more at present.But sharply strengthen along with span increases deadweight, structure faces the contradiction of using function, design rationality and economic indicator mutually to restrict.Improve the rigidity of structure for the use function that meets structure reduces dead load simultaneously, the prestressing force beam string structure of being furnished with drag-line more and more is applied in large-span steel.By the layout of prestressed cable and strut, the bearing capacity of large-span steel and rigidity have had very large improvement.
As shown in Figure 1, existing Spatial beam string structure, comprise tension string beam structure and purlin 5 that some Pin parallel interval are arranged, as shown in Figure 2, every Pin tension string beam structure comprises a pair of beam 1(or arch or the truss of winding up), some to strut 3 and a pair of lower edge drag-line 2, the described paired beam 1 that winds up, paired strut 3 and paired lower edge drag-line 2 are arranged symmetrically in the both sides of this plane of symmetry with respect to a plane of symmetry, the beam 1 that winds up, strut 3 and the lower edge drag-line 2 that are positioned at this plane of symmetry the same side form a face structure; In same structure, the two ends of lower edge drag-line 2 are fixed with the two ends of the drag-line 1 that winds up respectively, and the upper end of described strut 3 is hinged with the beam 1 that winds up, and the lower end of strut 3 is fixedly connected with lower edge drag-line 2; The lower end that is arranged in two paired struts 3 of two face structures is fixedly connected with two lower edge drag-lines 2 respectively by two cord clip tools 4; Described purlin 5 is along tension string beam structure arragement direction layout and perpendicular to the described plane of symmetry, and the two ends of purlin 5 are hinged with the two Pin tension string beam structures that are positioned at two ends respectively; Lower edge drag-line 2 after stretch-draw forms the broken line of axial symmery shape, and the beam 1 that winds up, strut 3 and lower edge drag-line 2 form self equilibrium systems, lower edge drag-line 2 tensions, and strut 3 is pressurized two power bars, the beam 1 that winds up is bending component.
In said structure, the prestressing force of lower edge drag-line 2 makes tension string beam structure produce allowance for camber, therefore the final amount of deflection of tension string beam structure under load action can reduce, and the stretching force by lower edge drag-line 2, make strut 3 produce component upwards, the beam 1 that causes winding up produce with the external load effect under opposite internal force and distortion, to form whole tension string beam structure and to improve the rigidity of structure, 3 pairs of Moment resistant Elements of strut provide resiliency supported, improve the latter's stress performance; When if bending component is taken as arch, born the horizontal thrust of arch by lower edge drag-line 2, alleviate the burden that arch produces bearing, therefore should take necessary temporary transient or permanent construction measure at the bearing place, form self equilibrium systems in roofing load actions such as (refer under) deadweights under top stress and external load effect, do not produce horizontal thrust; Simultaneously, the existence of lower edge drag-line 2 can reduce greatly the to wind up cross section of beam 1, improve the supporting capacity of total.The existence of purlin 5 can be linked to be each Pin tension string beam structure an integral body, strengthens the globality of tension string beam structure, and simultaneously, the calculated length while reducing single Pin tension string beam structure pressurized, can increase the span of whole tension string beam structure.At this moment,, if purlin 5 in use occurs destroying fracture, lost contact between each Pin tension string beam structure, single Pin tension string beam structure bears external load may, because the Lack of support failure lost efficacy, continuous collapse may occur.
Summary of the invention
Goal of the invention:, in order to overcome the deficiencies in the prior art, the invention provides a kind of Spatial Beam String Structure that the purlin inefficacy causes the globality of total to be lost immediately afterwards of in use can avoiding appearing at.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
A kind of Spatial Beam String Structure, comprise tension string beam structure and purlin that some Pin parallel interval are arranged, every Pin tension string beam structure comprises a pair of beam that winds up, some to strut and a pair of lower edge drag-line, the described paired beam that winds up, paired strut and paired lower edge drag-line are arranged symmetrically in the both sides of this plane of symmetry with respect to a plane of symmetry, the beam that winds up, strut and the lower edge drag-line that are positioned at this plane of symmetry the same side form a face structure; In same structure, the two ends of lower edge drag-line are fixed with the two ends of the drag-line that winds up respectively, and the upper end of described strut is hinged with the beam that winds up, and the lower end of strut is fixedly connected with the lower edge drag-line; The lower end that is arranged in two paired struts of two face structures is fixedly connected with two lower edge drag-lines respectively by two cord clip tools; Described purlin is along tension string beam structure arragement direction layout and perpendicular to the described plane of symmetry, and the two ends of purlin are hinged with the two Pin tension string beam structures that are positioned at two ends respectively; Remember that adjacent and two face structures not being arranged in same Pin tension string beam structure are corresponding one group of P face and N face, be furnished with some oblique cables between described one group of P face and N face, described oblique cable is in tilted layout with respect to purlin, and the one end is hinged with the beam that winds up of P face, the other end is fixedly connected with the strut lower end of N face.
This case is with respect to prior art, increased the use of oblique cable, after purlin lost efficacy, due to the annexation between oblique cable and adjacent tension string beam structure, make the globality of total can not disappear at once, improved the anti-fall performance of collapsing, can prevent Progressive Collapse, eliminate safe hidden trouble, also can greatly strengthen the globality of structure simultaneously.In addition, the out-of-plane unstability of appearance after oblique cable has effectively stoped existing tension string beam structure lower edge one layback rope to lose efficacy.
Preferably, the hinged position of described oblique cable and the beam that winds up of P face comprises and only comprises in this P face wind up position that beam is fixedly connected with the lower edge drag-line and wind up beam and the hinged position of strut.
More preferred, will wind up respectively beam and lower edge drag-line of strut is divided into the n section, and total n+1 node, remember that the node on the beam that winds up is followed successively by: u 0, u 1..., u n-1, u n, the node of writing down on the string drag-line is followed successively by: d 0, d 1, d i..., d n-1, d nIn same structure, described node u 0With node d 0For same node, described node u nWith node d nFor same node; The oblique cable link position of arranging between described one group of P face and N face is d iu i-1And d iu i+1, wherein i be 1,2 ..., n-1.。
More preferred, be positioned at two ends all tension string beam structures in addition, two face structures of every Pin tension string beam structure are simultaneously as the P face or simultaneously as the N face.
More preferred, the described pair of cord clip tool be the fixing short drag-line lower end on same position simultaneously.
Preferably, described lower edge drag-line forms the broken line of axial symmery shape, and adjacent fold line forms a broken line angle, and each turning point of broken line is positioned on same parabola.
Beneficial effect: Spatial Beam String Structure provided by the invention, with respect to prior art, increased the use of oblique cable, after purlin lost efficacy,, due to the annexation between oblique cable and adjacent tension string beam structure, make the globality of total can not disappear at once, improved the anti-fall performance of collapsing, can prevent Progressive Collapse, eliminate safe hidden trouble, also can greatly strengthen the globality of structure simultaneously; In addition, the out-of-plane unstability of appearance after oblique cable has effectively stoped existing tension string beam structure lower edge one layback rope to lose efficacy.
Description of drawings
Fig. 1 is the structural representation of prior art;
Fig. 2 is single Pin tension string beam structure schematic diagram;
Fig. 3 is structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 3 as a kind of tension string beam structure schematic diagram based on inventive concept, comprise tension string beam structure and purlin (5) that some Pin parallel interval are arranged, every Pin tension string beam structure comprises a pair of beam that winds up (1), some to strut (3) and a pair of lower edge drag-line (2), the described paired beam that winds up (1), paired strut (3) and paired lower edge drag-line (2) are arranged symmetrically in the both sides of this plane of symmetry with respect to a plane of symmetry, the beam that winds up (1), strut (3) and the lower edge drag-line (2) that are positioned at this plane of symmetry the same side form a face structure; In same structure, the two ends of lower edge drag-line (2) are fixed with the two ends of the drag-line that winds up (1) respectively, and the upper end of described strut (3) is hinged with the beam (1) that winds up, and the lower end of strut (3) is fixedly connected with lower edge drag-line (2); The lower end that is arranged in paired two struts (3) of two face structures is fixedly connected with two lower edge drag-lines (2) respectively by two cord clip tools (4); Described purlin (5) is along tension string beam structure arragement direction layout and perpendicular to the described plane of symmetry, and the two ends of purlin (5) are hinged with the two Pin tension string beam structures that are positioned at two ends respectively; Remember that adjacent and two face structures not being arranged in same Pin tension string beam structure are corresponding one group of P face and N face, be furnished with some oblique cables (6) between described one group of P face and N face, described oblique cable (6) is in tilted layout with respect to purlin (5), and the one end is hinged with the beam that winds up (1) of P face, the other end is fixedly connected with strut (3) lower end of N face.
To wind up respectively beam (1) and lower edge drag-line (2) of strut (3) is divided into the n section, and total n+1 node, remember that the node on the beam (1) that winds up is followed successively by: u 0, u 1..., u n-1, u n, the node of writing down on string drag-line (2) is followed successively by: d 0, d 1, d i..., d n-1, d nIn same structure, described node u 0With node d 0For same node, described node u nWith node d nFor same node; Oblique cable (6) link position of arranging between described one group of P face and N face is d iu i-1And d iu i+1, wherein i be 1,2 ..., n-1.Simultaneously, be positioned at two ends all tension string beam structures in addition, two face structures of every Pin tension string beam structure are simultaneously as the P face or simultaneously as the N face.
Described pair of cord clip tool (4) be fixing short drag-line (5) lower end on same position simultaneously.
The hinged position of described oblique cable (6) and the beam that winds up (1) of P face comprises and only comprises in this P face position and the beam (1) that the winds up position hinged with strut (3) that beam (1) is fixedly connected with lower edge drag-line (2) of winding up.
Lower edge drag-line 2 after stretch-draw forms the broken line of axial symmery shape, and the beam 1 that winds up, strut 3 and lower edge drag-line 2 form self equilibrium systems, lower edge drag-line 2 tensions, and strut 3 is pressurized two power bars, the beam 1 that winds up is bending component; Lower edge drag-line 2 forms the broken line of axial symmery shape, and adjacent fold line forms a broken line angle, and each turning point of broken line is positioned on same parabola.
Implementation procedure: at first utilize tension string beam structure operational phase lower edge drag-line 2 shapes in the computer simulation prior art, then increase oblique cable 6, at strut 3, lower edge drag-line 2, purlin 5, each oblique cable 6, the position of cord clip tool 4 is all calculated the internal force of lower edge drag-line 2 and each oblique cable 6 final (operational phases) in constant situation, and the variation of internal force changes to compensate by the internal force of cord clip tool 4.
Lower edge drag-line 2 and each oblique cable 6 are installed and fixedly during strut 3, cord clip tool 4 firmly is fixed on lower edge drag-line 2 and the corresponding calibration position of each oblique cable 6.After the work progress such as stretch-draw, installation and various where applying, strut 3 and lower edge drag-line 2 and each oblique cable 6 just are in the state (position of all members is all identical with each member position of opening the string beam under existing technology) of design expectation.On the basis of this processing mode, adopt an effective measure and increase the friction factor of 4 of lower edge drag-line 2 and each oblique cable 6 and cord clip tools as far as possible, as safety stock, so that lower edge drag-line 2 and each oblique cable 6 in a string beam are in stable state all the time.
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 (6)

1. Spatial Beam String Structure, comprise tension string beam structure and purlin (5) that some Pin parallel interval are arranged, every Pin tension string beam structure comprises a pair of beam that winds up (1), some to strut (3) and a pair of lower edge drag-line (2), the described paired beam that winds up (1), paired strut (3) and paired lower edge drag-line (2) are arranged symmetrically in the both sides of this plane of symmetry with respect to a plane of symmetry, the beam that winds up (1), strut (3) and the lower edge drag-line (2) that are positioned at this plane of symmetry the same side form a face structure; In same structure, the two ends of lower edge drag-line (2) are fixed with the two ends of the drag-line that winds up (1) respectively, and the upper end of described strut (3) is hinged with the beam (1) that winds up, and the lower end of strut (3) is fixedly connected with lower edge drag-line (2); The lower end that is arranged in paired two struts (3) of two face structures is fixedly connected with two lower edge drag-lines (2) respectively by two cord clip tools (4); Described purlin (5) is along tension string beam structure arragement direction layout and perpendicular to the described plane of symmetry, and the two ends of purlin (5) are hinged with the two Pin tension string beam structures that are positioned at two ends respectively; It is characterized in that: remember that adjacent and two face structures not being arranged in same Pin tension string beam structure are corresponding one group of P face and N face, be furnished with some oblique cables (6) between described one group of P face and N face, described oblique cable (6) is in tilted layout with respect to purlin (5), and the one end is hinged with the beam that winds up (1) of P face, the other end is fixedly connected with strut (3) lower end of N face.
2. Spatial Beam String Structure according to claim 1 is characterized in that: the hinged position of described oblique cable (6) and the beam that winds up (1) of P face comprises and only comprises in this P face position and the beam (1) that the winds up position hinged with strut (3) that beam (1) is fixedly connected with lower edge drag-line (2) of winding up.
3. Spatial Beam String Structure according to claim 1 is characterized in that: will wind up respectively beam (1) and lower edge drag-line (2) of strut (3) is divided into the n section, and total n+1 node, remember that the node on the beam (1) that winds up is followed successively by: u 0, u 1..., u n-1, u n, the node of writing down on string drag-line (2) is followed successively by: d 0, d 1, d i..., d n-1, d nIn same structure, described node u 0With node d 0For same node, described node u nWith node d nFor same node; Oblique cable (6) link position of arranging between described one group of P face and N face is d iu i-1And d iu i+1, wherein i be 1,2 ..., n-1.
4. Spatial Beam String Structure according to claim 3 is characterized in that: be positioned at all tension string beam structures beyond two ends, two face structures of every Pin tension string beam structure are simultaneously as the P face or simultaneously as the N face.
5. according to claim 1,2,3 or 4 described Spatial Beam String Structures, it is characterized in that: described pair of cord clip tool (4) be fixing short drag-line (5) lower end on same position simultaneously.
6. Spatial Beam String Structure according to claim 1 is characterized in that: described lower edge drag-line (2) forms the broken line of axial symmery shape, and adjacent fold line forms a broken line angle, and each turning point of broken line is positioned on same parabola.
CN201310337417.2A 2013-08-05 2013-08-05 Three-dimensional beam string structure Active CN103397740B (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103761367A (en) * 2013-12-27 2014-04-30 天津大学建筑设计研究院 Displacement control objective based analytic calculating method of string beam structural internal force
CN103993662A (en) * 2014-03-24 2014-08-20 淮海工学院 Internal and external supporting rod type cable-arch structure
CN104085832A (en) * 2014-07-17 2014-10-08 北京市建筑工程研究院有限责任公司 Flexible component lifting device and lifting method thereof
CN104847017A (en) * 2015-05-25 2015-08-19 中国航空规划建设发展有限公司 Novel prestress industrial stockyard canopy structure and method for constructing same
CN105040880A (en) * 2015-08-06 2015-11-11 中国华西企业股份有限公司 Roof steel structure and construction method thereof
CN106401042A (en) * 2016-09-12 2017-02-15 东南大学 Cable truss structure provided with steel sheet strips
CN110206154A (en) * 2019-05-28 2019-09-06 潍坊新力蒙水产技术有限公司 Large scale prolongs method of the rope type without support Venue Construction
CN110387997A (en) * 2019-06-10 2019-10-29 浙江省建工集团有限责任公司 A kind of assembled Long span wood beam string membrane building structure
US10479654B2 (en) 2014-05-26 2019-11-19 Hans Künz GmbH Crane girder for a crane
CN110714567A (en) * 2019-09-04 2020-01-21 中信建筑设计研究总院有限公司 Node does not have continuous broken line lower chord radial cable structure that slides
CN111456322A (en) * 2020-04-22 2020-07-28 上海大学 Carbon fiber bamboo-wood mixed space beam string structure and construction method thereof

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JP2000282579A (en) * 1999-03-30 2000-10-10 Taisei Corp Tension introducing method of tension member in arched roof frame
CN201627314U (en) * 2009-12-16 2010-11-10 中铁六局集团有限公司 Overhead shifter for steel roof truss with large-span beam string
CN201865240U (en) * 2010-10-28 2011-06-15 中国民航大学 Double-cable truss string structure with damping spring levers
CN102199939A (en) * 2010-12-29 2011-09-28 中建国际(深圳)设计顾问有限公司 Truss string structure

Patent Citations (5)

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SU1638284A1 (en) * 1988-05-18 1991-03-30 Новосибирский инженерно-строительный институт им.В.В.Куйбышева Prestressed spacious truss
JP2000282579A (en) * 1999-03-30 2000-10-10 Taisei Corp Tension introducing method of tension member in arched roof frame
CN201627314U (en) * 2009-12-16 2010-11-10 中铁六局集团有限公司 Overhead shifter for steel roof truss with large-span beam string
CN201865240U (en) * 2010-10-28 2011-06-15 中国民航大学 Double-cable truss string structure with damping spring levers
CN102199939A (en) * 2010-12-29 2011-09-28 中建国际(深圳)设计顾问有限公司 Truss string structure

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103761367A (en) * 2013-12-27 2014-04-30 天津大学建筑设计研究院 Displacement control objective based analytic calculating method of string beam structural internal force
CN103761367B (en) * 2013-12-27 2017-02-15 天津大学建筑设计研究院 Displacement control objective based analytic calculating method of string beam structural internal force
CN103993662A (en) * 2014-03-24 2014-08-20 淮海工学院 Internal and external supporting rod type cable-arch structure
US10479654B2 (en) 2014-05-26 2019-11-19 Hans Künz GmbH Crane girder for a crane
CN104085832A (en) * 2014-07-17 2014-10-08 北京市建筑工程研究院有限责任公司 Flexible component lifting device and lifting method thereof
CN104085832B (en) * 2014-07-17 2016-09-07 北京市建筑工程研究院有限责任公司 A kind of method for improving of flexible member lifting device
CN104847017A (en) * 2015-05-25 2015-08-19 中国航空规划建设发展有限公司 Novel prestress industrial stockyard canopy structure and method for constructing same
CN104847017B (en) * 2015-05-25 2017-03-08 中国航空规划设计研究总院有限公司 A kind of prestressing force industry stock ground canopy structure and construction method
CN105040880A (en) * 2015-08-06 2015-11-11 中国华西企业股份有限公司 Roof steel structure and construction method thereof
CN106401042A (en) * 2016-09-12 2017-02-15 东南大学 Cable truss structure provided with steel sheet strips
CN110206154A (en) * 2019-05-28 2019-09-06 潍坊新力蒙水产技术有限公司 Large scale prolongs method of the rope type without support Venue Construction
CN110387997A (en) * 2019-06-10 2019-10-29 浙江省建工集团有限责任公司 A kind of assembled Long span wood beam string membrane building structure
CN110714567A (en) * 2019-09-04 2020-01-21 中信建筑设计研究总院有限公司 Node does not have continuous broken line lower chord radial cable structure that slides
CN111456322A (en) * 2020-04-22 2020-07-28 上海大学 Carbon fiber bamboo-wood mixed space beam string structure and construction method thereof

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