CN102926494B - Radial spherical plain cable-strut system for suspended dome structure - Google Patents
Radial spherical plain cable-strut system for suspended dome structure Download PDFInfo
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- CN102926494B CN102926494B CN201210473430.6A CN201210473430A CN102926494B CN 102926494 B CN102926494 B CN 102926494B CN 201210473430 A CN201210473430 A CN 201210473430A CN 102926494 B CN102926494 B CN 102926494B
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Abstract
The invention belongs to the technical field of building structural engineering and relates to a radial spherical plain cable-strut system for a suspended dome structure. The radial spherical plain cable-strut system comprises an upper node of a radial spherical plain bearing stay bar, a stay bar and a lower node of an un-slideable stay bar. The upper node of the radial spherical plain bearing stay bar comprises a node lug plate, a node semi-circular pipe reinforcing rib, a stay bar lug plate, a first radial spherical plain bearing and a first pin shaft; the lower node of the un-slideable stay bar comprises an upper cable clamp, a lower cable clamp, an annular cable clamp, a radial pull rod lug plate, a radial pull rod, a second radial spherical plain bearing and a second pin shaft. According to the invention, the defect of pre-stress loss caused by friction of the traditional cable-strut system in a stretch-draw stage can be eliminated; an annular rope and the lower node of the stay bar are fixed all the time in the stretch-draw stage; the pre-stress is exerted by the annular swinging of the upper node of the stay bar. The cable-strut system provides a full new stretch-draw annular cable mode and is simple in structure and clear in force transmission.
Description
Technical field
The invention belongs to structural engineering technical field, relate in particular to a kind of string and prop up structural system.
Background technology
Cable-strut system is that string props up the key component that contacts lower flexible cable-strut system and top rigidity system in structural system, and it is normally made up of node on strut lower node, strut, strut, radially drag-line (pull bar) and hoop drag-line.The function of cable-strut system mainly contains two: 1. prop up the dome construction stage at string, the prestressing force of stretching end is passed to strop unit, and prestressing force is passed to upper wire shell by node on radial cable, vertical strut and strut, make the pre-arch camber of latticed shell structure; 2. prop up dome operational phase at string, upper wire shell load is passed to radially drag-line, vertical strut and high strength hoop drag-line by node on strut, thereby improve the holistic resistant behavior of structure.
Whether current strut lower node is interrupted and can be divided into according to hoop rope: Continuous Cable lower node and interruption rope lower node.Cable-strut system can be divided into accordingly to Continuous Cable cable-strut system and be interrupted rope cable-strut system.Traditional Continuous Cable cable-strut system adopts slidably node on strut lower node and bearing pin hinge strut, there are several problems in this system: 1) in construction process, between hoop rope and cord clip, can produce relative sliding, and should ensure as far as possible that strop can be free to slide, need fixing strop in operational phase (after construction finishes), make it to produce relative sliding with cord clip, slide and increased construction complexity with fixing conversion; 2) traditional slidably strut lower node is due to strop and cord clip friction in stretching process, and loss of prestress is more serious, has reduced construction controllable degree, although taked many measures, and joint form relative complex, effect is all undesirable; 3) the suspended-dome structure theory of computation require being connected of strut and top rigid structures and radially the connection of pull bar and strut lower node be space and be articulated and connected, and traditional bearing pin cuts with scissors and can only ensure strut and radially pull bar radial direction is hinged and other directions can not meet hinged requirement.
Summary of the invention
For addressing the above problem, the object of the invention is to overcome the above-mentioned deficiency of prior art, provide one can avoid causing loss of prestress because strop slides with the friction of strut lower node, and can reduce construction complexity, improve suspended-dome structure that construction controllable degree and simple structure, Path of Force Transfer are clear and definite to axle joint cable-strut system.For this reason, the present invention adopts following technical scheme.
A kind of suspended-dome structure is to axle joint cable-strut system, comprises node on plain radial bearing strut, strut, strut lower node slidably not, wherein,
On plain radial bearing strut, node comprises: two joint lug plates (2) that are fixedly connected with superstructure node (1), with the semi-circular tube stiffening rib (3) of fixing two node ears (2) and being fixedly connected with superstructure node (1), strut otic placode (4) between two joint lug plates 2, the first plain radial bearing (12a) and the first bearing pin (5a), described the first plain radial bearing (12a) comprises mutually nested outer race (14a) and bearing inner ring (15a), be placed in the hole inside of offering on strut otic placode (4), the first bearing pin (5a) runs through strut otic placode (4), bearing inner ring (15a) and joint lug plate (2), outer race (14a) is fixedly connected with strut otic placode (4), strut otic placode (4) is fixedly connected with the upper end of strut,
Slidably strut lower node does not comprise: upper cord clip 7, lower cord clip 8, hoop drag-line 9, radially pull bar otic placode 10, radially pull bar 11, the second plain radial bearing (12b) and the second bearing pin (5b), upper cord clip (7) and lower cord clip (8) interfix by high-strength bolt (13), both middle parts are provided with jut and the sunk part of mutual correspondence, both aim at and jointly surround cavity (16) mutually, the external surface of this cavity inner surface and hoop drag-line (9) cooperatively interacts, its diameter of section is slightly less than the diameter of hoop drag-line (9), be used for holding with dead ring to drag-line (9), radially built-in the second plain radial bearing of pull bar otic placode (10) (12b), the second plain radial bearing (12b) comprises outer race 14b and bearing inner ring 15b, outer race (14b) is fixedly connected with pull bar otic placode (10) radially, and the second bearing pin (5b) is through pull bar otic placode (10) radially, bearing inner ring (15b) and the end of pull bar (11) radially, strut lower end is fixed on cord clip (7).
As preferred embodiment, be provided with metallic bur power at cavity inner surface; If the hoop drag-line (9) adopting is high vanadium rope, cavity facade is wavy, matches with the external surface shape of high vanadium rope; Be coated with construction structure glue at the inner surface of cavity or at the external surface of hoop drag-line.
The present invention propose to axle joint cable-strut system, cable-strut system has adopted not slidably strut lower node (construction stage and operational phase), plain radial bearing is introduced to string to be propped up in dome cable-strut system, utilize the function of plain radial bearing universal rotational, plain radial bearing is placed in to strut otic placode and radially in otic placode, the space of realizing strut and superstructure, radially pull bar and strut lower node is articulated and connected; On plain radial bearing strut, node allows that strut is radially movable, hoop fine motion, thus strut lower node can strut on node be centre swinging.In work progress, hoop drag-line is relative fixing with strut lower node whole process, directly swing and realize prestressed stretch-draw by strut lower node, be different from the stretching mode that tradition is slided by strop, this brand-new stretch-draw mechanism has avoided traditional strut lower node strop relative sliding to produce the problem of loss of prestress, improves construction controllable degree; Simple structure, be easy to realize, meet calculation assumption, reduce construction complexity.
Brief description of the drawings
Fig. 1 is unitary construction schematic diagram of the present invention;
Fig. 2 is node schematic diagram on strut;
Fig. 3 is strut lower node schematic diagram.
In figure, 1 is superstructure node, and 2 is joint lug plate, 3 is joint lug plate stiffening rib, and 4 is strut otic placode, and 5a, 5b are bearing pin, 6 is strut, and 7 is upper cord clip, and 8 is lower cord clip, 9 is hoop drag-line, and 10 is pull bar otic placode radially, and 11 is pull bar radially, 12a/12b is plain radial bearing, and 13 is high-strength bolt, and 14a, 14b are outer race, 15a, 15b are bearing inner ring, and 16 is cavity.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention will be described.
As shown in Figure 1, 2, 3, this embodiment comprises node on the plain radial bearing strut being made up of joint lug plate 2, node semi-circular tube stiffening rib 3, strut otic placode 4, plain radial bearing 12a and bearing pin 5a; By upper cord clip 7, lower cord clip 8, hoop drag-line 9, radially pull bar otic placode 10, not strut lower node slidably that radially pull bar 11, plain radial bearing 12b, high-strength bolt 13 and bearing pin 5b form; Three chief components such as strut 6 grade.
On plain radial bearing strut, node comprises: joint lug plate 2, node semi-circular tube stiffening rib 3, strut otic placode 4, plain radial bearing 12a and bearing pin 5a.Wherein plain radial bearing 12a comprises two parts: outer race 14a and bearing inner ring 15a, and bearing inner and outer rings is finished product, nests together; Plain radial bearing 12a is placed in to strut otic placode 4 circular hole inside, and outer race 14a and strut otic placode 4 weld, and strut otic placode 4 is inserted in the middle of two joint lug plates 2, use bearing pin 5a to run through strut otic placode (through bearing inner ring 15a) and joint lug plate; Node semi-circular tube stiffening rib is welded on joint lug plate, and joint lug plate 2 is welded on superstructure node 1.
Slidably strut lower node does not comprise: upper cord clip 7, lower cord clip 8, hoop drag-line 9, radially pull bar otic placode 10, radially pull bar 11, plain radial bearing 12b, high-strength bolt 13 and bearing pin 5b.Wherein go up cord clip 7, lower cord clip 8 planes are circular-arc, curvature is identical with strop curvature, lower cord clip 8 middle parts arrange jut, upper cord clip 7 middle parts arrange sunk part, profile is rectangular; Upper cord clip, lower cord clip connect by high-strength bolt 13, and a cross section is aimed at and jointly surrounded to the jut at lower cord clip middle part and the sunk part at upper cord clip middle part is mutually circular cavity 16.The less high vanadium rope of hoop drag-line self lateral stiffness that the present embodiment adopts, in order to coordinate the external surface of high vanadium rope, it is circular-arc that cavity plane and upper and lower cord clip are directly identical radian measure, facade undulate and footpath are slightly less than the diameter of hoop drag-line, be provided with metallic bur power at cavity inner surface, and be coated with building structure glue; Radially built-in centripetal pass festival-gathering bearing 12b in pull bar otic placode 10, outer race 14b and radially pull bar otic placode 10 weld.Bearing pin 5b is through pull bar otic placode 10 radially, bearing inner ring 15b and the circular hole of the end of pull bar 11 radially.
Strut 6 one end and strut otic placode 4 weld, and one end and upper cord clip 7 weld.
The present invention can ensure that in construction process and use procedure, hoop drag-line 9 does not produce relative sliding with strut lower node.First pass through frictional force retainer ring to drag-line, upper cord clip 7 and the lower cord clip 8 circular cavity inner surface that surrounds adopt welding rod to manufacture metallic bur power, increase the friction factor of the contact surface of hoop drag-line 9 and strut lower node; Apply precompression by high-strength bolt 13, the diameter of going up cord clip 7 and lower cord clip 8 circular cavity that surrounds is simultaneously slightly less than hoop drag-line 9 diameters, increases the normal pressure of the contact surface of hoop drag-line 9 and strut lower node; The cableway facade undulate that upper cord clip 7 and lower cord clip 8 surround, can increase the friction area of hoop drag-line 9 and upper cord clip 7 and lower cord clip 8 greatly, and by improving friction factor, contact area and method phase pressure reach the effect that improves frictional force.Secondly; by chemical adhesive power retainer ring to drag-line; upper cord clip 7 and the lower cord clip 8 circular cavity inner surface that surrounds are smeared building structure glue; and cut the protective sleeve (if having protective sleeve) of hoop drag-line 6 open; perfusion building structure glue; treat that construction structure glue forms intensity, can produce larger chemical adhesive power.
String props up after the installation of dome superstructure, joint lug plate 2 is welded on the superstructure node 1 of appointment, then node semi-circular tube stiffening rib 3 and superstructure node 1 and joint lug plate 2 is welded; Plain radial bearing 12a is placed in strut otic placode 4, and outer race 14a and strut otic placode 4 weld, and strut 6 is connected with strut otic placode 4; Strut otic placode 4 is inserted between two joint lug plates 2, and the otic placode circular hole center of circle of aliging, use bearing pin 5a through strut otic placode 4 and joint lug plate 3, complete being connected of node and strut and superstructure on plain radial bearing strut.
According to the strut lower node coordinate of construction simulation Analysis deterrmination, by upper cord clip 7 locate after and strut 6 weld; Smear construction structure glue at upper cord clip 7 cableway inwalls; Cut hoop drag-line 9 outsourcing protective sleeves open, perfusion construction structure glue; Hoop drag-line 9 is placed in upper cord clip 7 curve cableways, smears construction structure glue at lower cord clip 8 cableway inner surfaces, lower cord clip 8 is aimed to upper cord clip 7 center lines, form closed circle cross section cableway, adopt high-strength bolt 13 fastening.Strut lower node is connected with strut 6.
According to radially pull bar otic placode 10 locus of design, be welded in strut lower node; Plain radial bearing 12b is placed in radially in pull bar otic placode 10, and outer race 14b welds with pull bar otic placode 10 radially, adopts the connected mode consistent with node on strut, completes being radially connected of pull bar 11 and strut lower node by bearing pin 5b.
Treat that construction structure glue forms intensity, can carry out prestressed stretch-draw.
In other embodiments, the external surface of hoop drag-line 9 is provided with protective sleeve, can in protective sleeve, be perfused with building structure glue.If hoop drag-line 9 bending rigidities are larger, be difficult for bending to undaform, as half parallel wire unit etc., go up the cableway that cord clip 7, lower cord clip 8 surround, can not present undaform at facade.
The present invention can ensure that strut and superstructure space are articulated and connected, radially pull bar and strut lower node space are articulated and connected.Plain radial bearing is made up of outer race and bearing inner ring, and outer race is the annulus of an inner face depression, and bearing inner ring is an annulus that outside is outstanding, and the two mutual interlock just can realize universal rotational.By centripetal joint shaft 12a bearing among strut otic placode 4, the performance requirement of just can realize that strut is radially rotatable, hoop can fine motion; By be placed in radially pull bar otic placode 10 to plain radial bearing 12b, the performance requirement of just can realize that pull bar is radially radially rotatable, hoop can fine motion.
Claims (4)
1. suspended-dome structure is to an axle joint cable-strut system, comprises node on plain radial bearing strut, strut, strut lower node slidably not,
Wherein,
On plain radial bearing strut, node comprises: two joint lug plates (2) that are fixedly connected with superstructure node (1), with the semi-circular tube stiffening rib (3) of fixing two joint lug plates (2) and being fixedly connected with superstructure node (1), be positioned at the strut otic placode (4) between two joint lug plates (2), the first plain radial bearing (12a) and the first bearing pin (5a), described the first plain radial bearing (12a) comprises mutually nested outer race (14a) and bearing inner ring (15a), be placed in the hole inside of offering on strut otic placode (4), the first bearing pin (5a) runs through strut otic placode (4), bearing inner ring (15a) and joint lug plate (2), outer race (14a) is fixedly connected with strut otic placode (4), strut otic placode (4) is fixedly connected with the upper end of strut,
Slidably strut lower node does not comprise: upper cord clip (7), lower cord clip (8), hoop drag-line (9), radially pull bar otic placode (10), radially pull bar (11), the second plain radial bearing (12b) and the second bearing pin (5b), upper cord clip (7) and lower cord clip (8) interfix by high-strength bolt (13), both middle parts are provided with jut and the sunk part of mutual correspondence, both aim at and jointly surround cavity (16) mutually, the external surface of this cavity inner surface and hoop drag-line (9) cooperatively interacts, its diameter of section is slightly less than the diameter of hoop drag-line (9), be used for holding with dead ring to drag-line (9), radially built-in the second plain radial bearing of pull bar otic placode (10) (12b), the second plain radial bearing (12b) comprises outer race (14b) and bearing inner ring 15b, outer race (14b) is fixedly connected with pull bar otic placode (10) radially, and the second bearing pin (5b) is through pull bar otic placode (10) radially, bearing inner ring (15b) and the end of pull bar (11) radially, strut lower end is fixed on cord clip (7).
2. suspended-dome structure according to claim 1, to axle joint cable-strut system, is characterized in that, is provided with metallic bur power at cavity inner surface.
3. suspended-dome structure according to claim 1, to axle joint cable-strut system, is characterized in that, if the hoop drag-line (9) adopting is high vanadium rope, cavity facade is wavy, matches with the external surface shape of high vanadium rope.
4. suspended-dome structure according to claim 1, to axle joint cable-strut system, is characterized in that, is coated with construction structure glue at the inner surface of cavity or at the external surface of hoop drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210473430.6A CN102926494B (en) | 2012-11-20 | 2012-11-20 | Radial spherical plain cable-strut system for suspended dome structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210473430.6A CN102926494B (en) | 2012-11-20 | 2012-11-20 | Radial spherical plain cable-strut system for suspended dome structure |
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| Publication Number | Publication Date |
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| CN102926494A CN102926494A (en) | 2013-02-13 |
| CN102926494B true CN102926494B (en) | 2014-10-08 |
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| CN201210473430.6A Expired - Fee Related CN102926494B (en) | 2012-11-20 | 2012-11-20 | Radial spherical plain cable-strut system for suspended dome structure |
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| CN103243924A (en) * | 2013-04-25 | 2013-08-14 | 中国华冶科工集团有限公司 | Method for improving slippage resistance of cable clamp |
| CN104653708B (en) * | 2015-01-22 | 2016-09-07 | 上海海事大学 | A kind of cable-rod structure assembling type node |
| CN106836493B (en) * | 2017-01-22 | 2018-10-02 | 东南大学 | A kind of FRP strop transfers for dome structure lower node |
| CN109972739A (en) * | 2017-12-28 | 2019-07-05 | 烟台大学 | The spherical rib-ring-shaped intersection Suo Cheng latticed shell structure of single layer |
| CN110145028A (en) * | 2019-05-07 | 2019-08-20 | 天津大学 | The centripetal double rustling sounds in top for beam-string structure support joint system |
| CN110158834A (en) * | 2019-05-07 | 2019-08-23 | 天津大学 | The centripetal double rustling sounds in lower part for beam-string structure support joint system |
| CN110541511A (en) * | 2019-08-16 | 2019-12-06 | 青岛理工大学 | Space chord steel-concrete composite floor |
| CN112942363A (en) * | 2021-01-29 | 2021-06-11 | 江苏三力岩土科技有限公司 | Deep basal pit prestressing force steel braced system |
| CN115233887B (en) * | 2021-04-25 | 2023-04-11 | 中国建筑设计研究院有限公司 | Radial stay bar cable clamp node and large-height-difference saddle-shaped spoke type structure system |
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| JP2000355981A (en) * | 1999-06-17 | 2000-12-26 | Kaieitechno Co Ltd | Coupler for precast product |
| CN101029521A (en) * | 2007-03-23 | 2007-09-05 | 北京工业大学 | V-shaped radial string branch mesh dome |
| CN201187108Y (en) * | 2008-02-03 | 2009-01-28 | 浙江大学 | Bearing constructed rolling friction node for constructing suspen-dome structure |
| CN201214841Y (en) * | 2008-07-02 | 2009-04-01 | 天津大学 | Cord supporting cylindrical shell structure system |
| CN102287009A (en) * | 2011-07-15 | 2011-12-21 | 上海现代建筑设计(集团)有限公司 | Node device |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324083A (en) * | 1980-05-29 | 1982-04-13 | Lajet Energy Company | Space frame |
| JP2000355981A (en) * | 1999-06-17 | 2000-12-26 | Kaieitechno Co Ltd | Coupler for precast product |
| CN101029521A (en) * | 2007-03-23 | 2007-09-05 | 北京工业大学 | V-shaped radial string branch mesh dome |
| CN201187108Y (en) * | 2008-02-03 | 2009-01-28 | 浙江大学 | Bearing constructed rolling friction node for constructing suspen-dome structure |
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| CN102287009A (en) * | 2011-07-15 | 2011-12-21 | 上海现代建筑设计(集团)有限公司 | Node device |
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