CN102162279A - Tensioning joint and device for single hoop cable in cable-rod structure by top support rod - Google Patents
Tensioning joint and device for single hoop cable in cable-rod structure by top support rod Download PDFInfo
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- CN102162279A CN102162279A CN 201110037575 CN201110037575A CN102162279A CN 102162279 A CN102162279 A CN 102162279A CN 201110037575 CN201110037575 CN 201110037575 CN 201110037575 A CN201110037575 A CN 201110037575A CN 102162279 A CN102162279 A CN 102162279A
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Abstract
The invention provides a tensioning joint with continuous single hoop cable by a suspend-dome support method. The tensioning joint comprises a support rod (1), a support rod base (2), an adjusting nut (3), an adjusting screw rod (4), a screw rod base joint (5) and a cable clamp (6), wherein, a hemispherical hinge (9) is connected with a concave position ball socket (11) through a countersunk head screw (10) to form the screw rod base joint (5); and the support rod (1) and the cable clamp (6) form a spherical hinge steering mechanism through the screw rod base joint (5). By adopting the structure, the adjusting screw rod (4) can extend out of the support rod base (2) to a certain length so as to tension the hoop cable by the support rod, and the cable clamp (6) can rotate around a central shaft of the support rod (1) so that the adjusting screw rod (4) of the support rod (1) can be appropriately deflected from the cable clamp (6). In the event that the hoop cable in a rod-cable system of a suspend-dome and cable dome structure is the continuous single cable, the hoop cable is tensioned by the support rod; and the tensioning joint provided by the invention solves the problems such as unfavorable additional torque and additional bending moment caused by change of an included angle between a cable clamp plane and a support rod axis during the installation and tension process.
Description
Technical field
The invention of stretch-draw node belongs to suspended-dome structure tensioning construction and architectural design field when the invention discloses a kind of suspended-dome structure rope leverage stretch-draw and adopting strut to shore method stretch-draw, relates to design of node and civil engineering tensioning construction field.
Background technology
Suspended-dome structure is made of the steel screen on top and the tension cable and rods system of bottom, is the mixture of traditional rope dome and space steel screen structure.The integral tension cable-strut system that the suspended-dome structure prestress system is made up of radially rope, hoop rope and strut, its prestressed foundation is different from common prestressed steel structure.Because radially rope, hoop rope and strut in the stretching integral cable-strut system are an organic whole, Suo Li and strut internal force are closely-related, influence each other, rely on each other.To wherein any one carries out stretch-draw, all can in other, set up corresponding prestressing force, that is to say the prestressing force effect that can reach same.Therefore string props up dome drag-line method for stretching has: strut is shored method, hoop cable stretching method and cable stretching method radially.
It is higher that the strut method of shoring is set up prestressing force efficient, easy construction, and departure and strop are linear easily, but strut lower end cord clip node space is strong, and general stressed complicated, space orientation requires accurate; Therefore, when carrying out the design of cord clip joint structure, except that need are considered accurate location and stressed safety, also should satisfy the requirement of drag-line practice of construction, comprise drag-line installation and stretch-draw.
Known string props up the dome strut, and to shore the upper end and the upper wire shell of strut in the stretch-draw node of method radially hinged, and the adjusting screw(rod) and the cord clip of lower end are fixed; If the hoop rope is to connect by the cord clip otic placode segmentation under the strut, then cord clip is with the hoop rope with radially rope is hinged, strut and cord clip constitute unified whole can free beat when the roof pressure strut, can in adjusting screw(rod), not produce additional bending moment, can satisfy the requirement of strut side-play amount and spatial attitude yet.If but strop is single continuous rope, there is following problem in above-mentioned known strut stretch-draw node:
1. before the formal stretch-draw of drag-line, cord clip clips cable body, can not slide relatively between cord clip and the Suo Pi, single continuous strop install and stretching process in upset and moving drive cord clip and make it trend around the rotation of strut central axis, strut and cord clip in the known strut stretch-draw node are fixed, cord clip can not rotate around the strut central axis, therefore will produce additional torque, also is unfavorable for the accurate installation and the stretch-draw of drag-line.
2. when drag-line stretch-draw roof pressure strut, strut will produce radial beat and less tangential beat, simultaneously strop and radially rope also because of passive stretch-draw tensioning.Because strop is continuous rope, if adopt known strut stretch-draw node, then strut will produce additional bending moment radially and in the process of tangential beat in adjusting screw(rod), and when tension tonnage was big, adjusting screw(rod) destroyed easily.
Summary of the invention
Technical problem: prop up the dome strut to shore method stretch-draw node be continuous single Suo Shiyi produces problems such as additional torque and additional bending moment in adjusting screw(rod) deficiency for strop for overcoming existing string, the invention provides and a kind ofly can not only overcome the problem that strop is continuous single rope additional torque and additional bending moment, and the novel graceful cable-rod structure of build is single
The strop strut is shored stretch-draw node and device.
Technical scheme:The single strop strut of cable-rod structure of the present invention is shored the stretch-draw node and is comprised at the bottom of strut, strut base, adjusting lock nut, adjusting screw(rod), the screw rod cord clip on the cradle head and strop; Strut and strut base link into an integrated entity, and the upper end of adjusting screw(rod) screws in the strut base and uses adjusting lock nut's adjusting screw(rod) height; The lower end and the hemisphere of adjusting screw(rod) are hinged, and the recess ball-and-socket that hemisphere cuts with scissors by cord clip on the dormant bolt of inner chamber and the strop links together; Under the strop on cord clip and the strop cord clip match and form a complete cord clip, the side of cord clip is provided with also radially that rope connects otic placode on strop.
The single strop strut of described cable-rod structure is shored the tensioning equipment of stretch-draw node, on strut, connect the stretch-draw annulus, last stretch-draw frock jig places stretch-draw annulus below, following stretch-draw frock jig places hemisphere hinge top, the hydraulic jack that stretch-draw is used is installed between stretch-draw frock jig and the following stretch-draw frock jig, and the oil cylinder of hydraulic jack carries out strop stretch-draw, and adjusting screw(rod) stretches out in the strut centre hole of base, and, finish stretch-draw with the adjusting screw(rod) length that the adjusting lock nut fixedly stretches out.
The design of novelty of the present invention strut shore cradle head at the bottom of adjusting screw(rod) in the method stretch-draw node and the screw rod between the cord clip, comprise a spherical recess ball-and-socket that is used for the support spherical hinge with fixed hemisphere spherical hinge of adjusting screw(rod) and cord clip end face, make strut and cord clip form ball-and-socket hinge style steering mechanism.Hemispheric hinged ball bottom surface is hemisphere face, and end face is the plane, is used for the stretch-draw step of stretch-draw frock jig down; Have the centre bore that adjusting screw(rod) is inserted in the hinged ball earlier, have downwards again dormant bolt is passed, diameter is greater than the centre bore of dormant bolt screw diameter.Recess ball-and-socket slightly larger in diameter on the cord clip is in the ball pivot diameter, in ball-and-socket, have with ball pivot in the centre bore of dormant bolt pairing.Ball pivot is connected by dormant bolt with recess ball-and-socket on the cord clip, weld all around is fixed with it for the centre bore of the adjusting screw(rod) insertion ball pivot end face in the strut, this structure both can make cord clip rotate around the strut central axis, can make between the adjusting screw(rod) of strut and the cord clip beat in right amount again.When carrying out stretch-draw, the shoulder pole girder that is made of frock jig up and down in the both sides of strut constitutes the counterforce device of jack, and last frock jig withstands on the stretch-draw step that strut welds above, and following frock jig just withstands on the end face of ball pivot.
Beneficial effect:The make that the strut that the present invention adopts is shored method stretch-draw node, cradle head at the bottom of between the adjusting screw(rod) of strut and the cord clip screw rod being set, the hemispherical recess ball-and-socket that comprises a hemisphere spherical hinge and support spherical hinge, both connect by dormant bolt, make strut and cord clip form ball-and-socket hinge style steering mechanism, the problem of additional torque and additional bending moment when not only having solved string to prop up strop in dome and the Suo Qiong acrochordal leverage being continuous single rope also is convenient to the accurate installation and the location of rope leverage.
Description of drawings
The present invention is described in more detail below in conjunction with drawings and Examples:
Fig. 1 is the whole schematic three dimensional views of the present invention, and 1 be strut among the figure, and 2 is the strut base, and 3 is the adjusting lock nut, and 4 is adjusting screw(rod), and 5 is cradle head at the bottom of the screw rod, and 6 is cord clip on the strop, and 7 is cord clip under the strop, and 8 are rope connection otic placode radially.
Fig. 2 is the schematic diagram of hemisphere hinge 9, and Fig. 3 is the schematic diagram of dormant bolt 10, and Fig. 4 is the schematic diagram of the recess ball-and-socket 11 of support hemisphere hinge.
Fig. 5 is the tensioning system of this stretch-draw node, and 12 for the stretch-draw annulus among the figure, and 13 be last stretch-draw frock jig, and 14 be hydraulic jack, and 15 is time frock jig, and 16 is strop, and 17 are rope radially.
The specific embodiment
The design of novelty of the present invention strut shore at the bottom of the adjusting screw(rod) and the screw rod between the cord clip in the method stretch-draw node
The joint makes strut and cord clip form ball-and-socket hinge style steering mechanism, and cord clip can be changeed around the strut central axis
Moving, can make between the adjusting screw(rod) of strut and the cord clip beat in right amount again, the problem of additional torque and additional bending moment when overcoming strop and be continuous single rope.
This stretch-draw node comprises at the bottom of strut 1, strut base 2, adjusting lock nut 3, adjusting screw(rod) 4, the screw rod cord clip 6 on the cradle head 5 and strop; Strut 1 links into an integrated entity with strut base 2, and the upper end of adjusting screw(rod) 4 screws in strut base 2 and uses adjusting lock nut's 3 adjusting screw(rod) height; The lower end of adjusting screw(rod) 4 and hemisphere hinge 9 is connected, hemisphere hinge 9 by inner chamber dormant bolt 10 and strop on the recess ball-and-socket 11 of cord clip 6 link together; Under the strop on cord clip 7 and the strop cord clip 6 match and form a complete cord clip, the side of cord clip 6 is provided with also radially that rope connects otic placode 8 on strop.Be specially hemisphere hinge 9 and offer the centre bore that adjusting screw(rod) 4 is inserted earlier, its degree of depth is the height of head that the length of adjusting screw(rod) 4 insertions adds the dormant bolt 10 that is adopted; Make the diameter of the centre bore that dormant bolt 10 passes be greater than the diameter of dormant bolt 10 screw rods in the hemisphere hinge 9, guarantee the beat ability between adjusting screw(rod) 4 and the cord clip 6.The bottom centre place of recess ball-and-socket 11 has the centre bore with dormant bolt 10 pairings, and hemisphere hinge 9 is connected with recess ball-and-socket 11 by dormant bolt 10; With the end face weld all around of cutting with scissors with hemisphere behind the last centre bore of adjusting screw(rod) 4 insertion hemisphere hinges 9.
Among Fig. 2, when carrying out stretch-draw, the both sides of strut 1 by on the shoulder pole girder that constitutes of frock jig 13 and following frock jig 15 constitute the counterforce device of jack 14, on strut 1, connect stretch-draw annulus 12, last stretch-draw frock jig 13 places stretch-draw annulus 12 belows, following stretch-draw frock jig 15 places hemisphere to cut with scissors 9 tops, the hydraulic jack 14 that stretch-draw is used is installed between stretch-draw frock jig 13 and the following stretch-draw frock jig 15, the oil cylinder of hydraulic jack 14 carries out strop stretch-draw, adjusting screw(rod) 4 stretches out in the strut centre hole of base, and, finish stretch-draw with adjusting screw(rod) 4 length that adjusting lock nut 3 fixedly stretches out.
Claims (2)
1. the single strop strut of cable-rod structure is shored the stretch-draw node, it is characterized in that this stretch-draw node comprises at the bottom of strut (1), strut base (2), adjusting lock nut (3), adjusting screw(rod) (4), the screw rod cord clip (6) on the cradle head (5) and strop; Strut (1) links into an integrated entity with strut base (2), and the upper end of adjusting screw(rod) (4) screws in strut base (2) and uses adjusting lock nut (3) adjusting screw(rod) height; The lower end of adjusting screw(rod) (4) and hemisphere hinge (9) is connected, hemisphere hinge (9) by inner chamber dormant bolt (10) and strop on the recess ball-and-socket (11) of cord clip (6) link together; Cord clip (6) matches and forms a complete cord clip on cord clip under the strop (7) and the strop, and the side of cord clip on strop (6) also is provided with radially rope connection otic placode (8).
2. tensioning equipment that adopts the single strop strut of the described cable-rod structure of claim 1 to shore the stretch-draw node, it is characterized in that, go up connection stretch-draw annulus (12) at strut (1), last stretch-draw frock jig (13) places stretch-draw annulus (12) below, following stretch-draw frock jig (15) places hemisphere hinge (9) top, the hydraulic jack that stretch-draw is used (14) is installed between stretch-draw frock jig (13) and the following stretch-draw frock jig (15), the oil cylinder of hydraulic jack (14) carries out strop stretch-draw, adjusting screw(rod) (4) stretches out in the strut centre hole of base, and, finish stretch-draw with adjusting screw(rod) (4) length that adjusting lock nut (3) fixedly stretches out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100375757A CN102162279B (en) | 2011-02-14 | 2011-02-14 | Tensioning joint and device for single hoop cable in cable-rod structure by top support rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100375757A CN102162279B (en) | 2011-02-14 | 2011-02-14 | Tensioning joint and device for single hoop cable in cable-rod structure by top support rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102162279A true CN102162279A (en) | 2011-08-24 |
| CN102162279B CN102162279B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100375757A Expired - Fee Related CN102162279B (en) | 2011-02-14 | 2011-02-14 | Tensioning joint and device for single hoop cable in cable-rod structure by top support rod |
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| CN (1) | CN102162279B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669591A (en) * | 2013-09-28 | 2014-03-26 | 北京工业大学 | Supporting rod lower joint of stiff supporting dome structure |
| CN103696520A (en) * | 2013-12-20 | 2014-04-02 | 天津大学 | CFRP (carbon fiber reinforced plastic) cable connecting joint of cable supported structure |
| CN105672490A (en) * | 2016-01-18 | 2016-06-15 | 中国建筑西南设计研究院有限公司 | Multi-jackstay shear-resisting type strop joint of cable-strut tensile structure |
| CN113216675A (en) * | 2021-03-24 | 2021-08-06 | 陕西省建筑科学研究院有限公司 | Method for shifting support rod and cable clamp in cable structure |
| CN113279511A (en) * | 2021-07-02 | 2021-08-20 | 锦宸集团有限公司 | Cable bearing grid steel roof structure for stadium |
| CN114108947A (en) * | 2021-11-30 | 2022-03-01 | 山东大学 | Beam string with stress adjustment function and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0419749A1 (en) * | 1989-09-25 | 1991-04-03 | Societe Viry S.A. | Metallic structure, in particular for a roofing |
| CN101050643A (en) * | 2007-05-21 | 2007-10-10 | 北京工业大学 | Prestress steel structure combined cable support node connecter |
| DE102007001830A1 (en) * | 2007-01-12 | 2008-07-17 | Akotherm Gmbh | Tension or compression bar for low voltage system, has inner rod extending in longitudinal direction, and outer rod connected with hollow space extending in longitudinal direction, where inner rod is arranged at hollow space |
| CN201121367Y (en) * | 2007-10-31 | 2008-09-24 | 北京市建筑设计研究院 | Universal rotating spherical hinge node clamper with steel structure |
| CN101314961A (en) * | 2008-06-24 | 2008-12-03 | 浙江大学 | Dish shaped node suitable for joint of chord-tension truss stay rod and double-cable |
| CN201972249U (en) * | 2011-02-14 | 2011-09-14 | 东南大学 | Stay bar back shore stretch-draw node and device with rope pole structure and single endless rope |
-
2011
- 2011-02-14 CN CN2011100375757A patent/CN102162279B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0419749A1 (en) * | 1989-09-25 | 1991-04-03 | Societe Viry S.A. | Metallic structure, in particular for a roofing |
| DE102007001830A1 (en) * | 2007-01-12 | 2008-07-17 | Akotherm Gmbh | Tension or compression bar for low voltage system, has inner rod extending in longitudinal direction, and outer rod connected with hollow space extending in longitudinal direction, where inner rod is arranged at hollow space |
| CN101050643A (en) * | 2007-05-21 | 2007-10-10 | 北京工业大学 | Prestress steel structure combined cable support node connecter |
| CN201121367Y (en) * | 2007-10-31 | 2008-09-24 | 北京市建筑设计研究院 | Universal rotating spherical hinge node clamper with steel structure |
| CN101314961A (en) * | 2008-06-24 | 2008-12-03 | 浙江大学 | Dish shaped node suitable for joint of chord-tension truss stay rod and double-cable |
| CN201972249U (en) * | 2011-02-14 | 2011-09-14 | 东南大学 | Stay bar back shore stretch-draw node and device with rope pole structure and single endless rope |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669591A (en) * | 2013-09-28 | 2014-03-26 | 北京工业大学 | Supporting rod lower joint of stiff supporting dome structure |
| CN103669591B (en) * | 2013-09-28 | 2016-09-14 | 北京工业大学 | A kind of strut lower node of stiffness-supported dome structure |
| CN103696520A (en) * | 2013-12-20 | 2014-04-02 | 天津大学 | CFRP (carbon fiber reinforced plastic) cable connecting joint of cable supported structure |
| CN103696520B (en) * | 2013-12-20 | 2016-03-23 | 天津大学 | String props up the CFRP rope connected node of structure |
| CN105672490A (en) * | 2016-01-18 | 2016-06-15 | 中国建筑西南设计研究院有限公司 | Multi-jackstay shear-resisting type strop joint of cable-strut tensile structure |
| CN105672490B (en) * | 2016-01-18 | 2018-08-14 | 中国建筑西南设计研究院有限公司 | More strut anti-shearing strop nodes of cable-strut tensile structure |
| CN113216675A (en) * | 2021-03-24 | 2021-08-06 | 陕西省建筑科学研究院有限公司 | Method for shifting support rod and cable clamp in cable structure |
| CN113216675B (en) * | 2021-03-24 | 2023-02-10 | 陕西省建筑科学研究院有限公司 | Method for shifting stay bar and cable clamp in cable structure |
| CN113279511A (en) * | 2021-07-02 | 2021-08-20 | 锦宸集团有限公司 | Cable bearing grid steel roof structure for stadium |
| CN114108947A (en) * | 2021-11-30 | 2022-03-01 | 山东大学 | Beam string with stress adjustment function and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102162279B (en) | 2012-06-27 |
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Granted publication date: 20120627 Termination date: 20190214 |