CN102561516B - Sphere joint fixing support with effect of relieving internal force of stay rope - Google Patents
Sphere joint fixing support with effect of relieving internal force of stay rope Download PDFInfo
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- CN102561516B CN102561516B CN 201210075995 CN201210075995A CN102561516B CN 102561516 B CN102561516 B CN 102561516B CN 201210075995 CN201210075995 CN 201210075995 CN 201210075995 A CN201210075995 A CN 201210075995A CN 102561516 B CN102561516 B CN 102561516B
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Abstract
A sphere joint fixing support with an effect of relieving internal force of a stay rope comprises a lower supporting structure, an embedded cushion plate, an inverted-T-shaped sliding plate, a plurality of embedded reinforcing steel bars, a fixed sphere joint, a plurality of columnar rolling bearings, an anchorage device, a plurality of damper springs and a support. The sphere joint fixing support has the following advantages that material utilization rate is high, after the support is mounted, change of the internal force of the stay rope on a main structure is low, and the characteristic ofhigh tensile ability of the stay rope can be sufficiently realized; construction is safe, simple and convenient, and the stay rope is anchored after penetrating through the inverted-T-shaped sliding plate, and then can stretch; if ultra stretching is caused due to reasons in construction, the sphere joint fixing support can realize a load relieving effect in advance, and the main structure is protected against being damaged by means of increasing deformation degree; and safety is high, after a building comes into use, once the building is subjected to load of power catastrophe such as violentearthquake, typhoon and the like, stretching and retracting of the damper springs can guarantee that the stay rope cannot be broken when the deformation of the main structure is high, and the hidden danger that the main structure collapses due to breakage of the stay rope is eliminated.
Description
Technical field
The invention belongs to the prestressed steel structure technical field of building structure, particularly relate to a kind of ball node fixed bearing that relaxes the drag-line endogenetic process that has.
Background technology
In recent years, the large span space steel work has obtained extensive use, wherein, prestressed steel structure because of its have stressed rationally, characteristics especially are subjected to designer's such as rigidity is big, in light weight concern, use more, all adopted large span truss string structure roof system as ZSPD terminal first phase, Guangzhou International Conference and Exhibition Center, suspended-dome structure has all been adopted in Museum of Tianjin function room, sports palace, Jinan.In addition, in bridge strengthening, the external prestressing The Application of Technology is also increasingly extensive.
In the construction of prestressed structure facility, drag-line is arranged on the main structure below usually, the shape that the main structure arch camber extremely designs behind the stretch-draw drag-line, and drag-line tension, superstructure pressurized, structure realizes self-balancing, can effectively control the vertical deformation of large span space steel work.Adopt the project of prestressing technique mostly to be large span, significant key project or engineering keypoint part, its design, construction are ripe day by day, and the researcher has also carried out many-sided research and obtained a lot of achievements.
Though the Prestressed Space steel work is a kind of stressed reasonable, big, lightweight large-span space structure of rigidity, in nearly 12 years of its application, does not stand the test of power catastrophe loads such as violent earthquake, typhoon as yet.Under above-mentioned power catastrophe load action, the internal force of prestressed cable can increase rapidly.Because drag-line belongs to fragile material, it destroys the continuous collapse that can cause main structure.Therefore, the drag-line design in the Prestressed Space structural steel design often leaves bigger safety factor, fails to give full play to the material property of drag-line.
At the problems referred to above, a kind of solution that the eighties in last century, the Britain research personnel proposed, namely load relaxes system.Its core concept is to introduce certain to do the device of mechanical movement in structure, its role is to when planform alters a great deal and component internal force changes not quite.This concept is introduced China by professor Dan Jian, and professor Guo Yanlin applies it in the awning structure design of stadium, and doctor Du Wenfeng proposes a kind ofly has an alleviative truss-string-structure of load, all is that load relaxes the achievement that system obtains in theory research.
Yet tradition hangs weight and guarantees that the constant mode of drag-line internal force can't satisfy the requirement attractive in appearance of architectural design, causes range of application narrow, simultaneously, under the wind suction effect, the constant meeting of drag-line internal force causes the superstructure reversal deformation excessive, causes that structure destroys in advance.Therefore, how to provide a kind of attractive in appearance, efficient, practical load reliever, with regard to becoming that restriction load mitigation system breaks through theoretical aspect and the key issue that enters practical application.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide higher, easy to operate and efficient, attractive in appearance, the practical ball node fixed bearing with mitigation drag-line endogenetic process of a kind of safety.
In order to achieve the above object, provided by the invention have the ball node fixed bearing that relaxes the drag-line endogenetic process and comprise lower support structure, pre-buried backing plate, inverted T-shaped sliding panel, many embedded bars, fixedly ball node, a plurality of column rolling bearing, ground tackle, many damping springs and bearing; Wherein the lower end of lower support structure is fixed on the top of large-span space structure post; Pre-buried backing plate is horizontally set on the surface of lower support structure; The inverted T-shaped sliding panel constitutes by the bottom wing listrium with along the vertically disposed web one of fore-and-aft direction, wherein the bottom surface of bottom wing listrium is connected along the column rolling bearing that fore-and-aft direction is arranged side by side in pre-buried backing plate surface one side with a plurality of standoff distances, therefore can horizontally slip, the middle part of web is formed with a perforate that is used for running through drag-line; Bearing is fixed on the surperficial opposite side of pre-buried backing plate; The lower end standoff distance of many embedded bars is vertically set on the inside of lower support structure, the end, front and back of bearing is run through in the embedded bar upper end that wherein is positioned at the bearing below, and the mode of utilizing nut to be tightened on the embedded bar upper end will interfix between bearing and pre-buried backing plate and the lower support structure; Fixedly ball node is hollow ball, is installed in the upper end of bearing, and its top links to each other with the end of a plurality of truss string structure rod members simultaneously; Ground tackle is installed at inverted T-shaped sliding panel and the fixing stay cable end between the ball node, is used for the end of drag-line is fixed; Many damping spring standoff distance levels are connected the medial surface of inverted T-shaped sliding panel epiplastron and fixedly on the ball node between the corresponding surface.
Described bearing is made of base plate and cross carriage, wherein floor level setting, and carriage is installed in the middle part, surface of base plate, and the upper center of carriage is circular shape.
Described many damping springs are arranged at the inverted T-shaped sliding panel with fixedly around the drag-line between the ball node.
Described web both sides are provided with many stiffeners.
Provided by the invention have the ball node fixed bearing that relaxes the drag-line endogenetic process and have following advantage: 1) stock utilization height: after this ball node fixed bearing was installed, drag-line internal force changed for a short time on the main structure, can give full play to the strong characteristics of drag-line tension ability.2) construction safety is easy: drag-line passes anchoring behind the inverted T-shaped sliding panel, can carry out stretch-draw; As cause super stretch-draw because of construction reason, the ball node fixed bearing can be brought into play the load abirritation in advance, protects main structure to avoid destroying by increasing distortion.3) safe: after building came into operation, in case suffer power catastrophe loads such as violent earthquake, typhoon, drag-line did not rupture when damping spring flexible can guarantee that main structure produces moderate finite deformation, had eliminated the hidden danger that the Yin Lasuo fracture causes main structure to collapse.
Description of drawings
Fig. 1 is the ball node fixed bearing structural front view with mitigation drag-line endogenetic process of the present invention.
Fig. 2 is the ball node fixed bearing structure vertical view with mitigation drag-line endogenetic process of the present invention.
Fig. 3 is the ball node fixed bearing structure left view with mitigation drag-line endogenetic process of the present invention.
Fig. 4 is the ball node fixed bearing structure right view with mitigation drag-line endogenetic process of the present invention.
Fig. 5 is the seat structure stereogram in the ball node fixed bearing that relaxes the drag-line endogenetic process that has of the present invention.
Fig. 6 is equipped with the truss string structure roof structure stereogram with the ball node fixed bearing that relaxes the drag-line endogenetic process of the present invention.
Fig. 7 is ball node fixed bearing and the truss string structure rod member connecting portion schematic diagram with mitigation drag-line endogenetic process of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the ball node fixed bearing with mitigation drag-line endogenetic process provided by the invention is elaborated.
As Fig. 1-shown in Figure 5, provided by the invention have the ball node fixed bearing that relaxes the drag-line endogenetic process and comprise lower support structure 1, pre-buried backing plate 2, inverted T-shaped sliding panel 3, many embedded bars 4, fixedly ball node 7, a plurality of column rolling bearing 8, ground tackle 9, many damping springs 10 and bearing 11; Wherein the lower end of lower support structure 1 is fixed on the top of large-span space structure post; Pre-buried backing plate 2 is horizontally set on the surface of lower support structure 1; Inverted T-shaped sliding panel 3 constitutes by bottom wing listrium 17 with along vertically disposed web 18 one of fore-and-aft direction, wherein the bottom surface of bottom wing listrium 17 is connected along the column rolling bearing 8 that fore-and-aft direction is arranged side by side in pre-buried backing plate 2 surperficial sides with a plurality of standoff distances, therefore can horizontally slip, the middle part of web 18 is formed with a perforate 19 that is used for running through drag-line 6; Bearing 11 is fixed on the surperficial opposite side of pre-buried backing plate 2; The lower end standoff distance of many embedded bars 4 is vertically set on the inside of lower support structure 1, the end, front and back of bearing 11 is run through in embedded bar 4 upper ends that wherein are positioned at bearing 11 belows, and the mode of utilizing nut 5 to be tightened on embedded bar 4 upper ends will interfix between bearing 11 and pre-buried backing plate 2 and the lower support structure 1; Fixedly ball node 7 is hollow ball, is installed in the upper end of bearing 11, and its top links to each other with the end of a plurality of truss string structure rod members 13 simultaneously; Ground tackle 9 is installed in inverted T-shaped sliding panel 3 and fixing 6 ends of the drag-line between the ball node 7, is used for the end of drag-line 6 is fixed; Many damping spring 10 standoff distance levels are connected the medial surface of inverted T-shaped sliding panel 3 epiplastrons 18 and fixedly on the ball node 7 between the corresponding surface.
Described bearing 11 is made of base plate 20 and cross carriage 21, and wherein base plate 20 is horizontally disposed with, and carriage 21 is installed in the middle part, surface of base plate 20, and the upper center of carriage 21 is circular shape.
Described many damping springs 10 are arranged at inverted T-shaped sliding panel 3 with fixedly around the drag-line between the ball node 76.
Described web 18 both sides are provided with many stiffeners 12.
Now so that the truss string structure with the ball node fixed bearing that relaxes the drag-line endogenetic process provided by the invention is installed is example the application of ball node fixed bearing is described.As Fig. 6, shown in Figure 7, the span of described truss string structure is 40m, span centre rise 4m, the spacing of strut 22 is 5m, truss string structure rod member 13 is round steel pipe, drag-line 6 is shaped as parabola, by many truss string structure rod members 13, many struts 22 and drag-line 6 constitute a Pin truss string structure 14, truss string structure 14 is for just putting pyrometric cone space arch truss, one end of every Pin truss string structure 14 is installed slip hinged-support 15, the other end is installed the ball node fixed bearing 16 that relaxes the drag-line endogenetic process that has provided by the invention, bearing absolute altitude+25.00m, and many Pin truss string structure 14 is in turn connected into the truss string structure roof system along fore-and-aft direction.
The installation process of every Pin truss string structure is as follows: at first drag-line 6 one ends on the Manufactured truss string structure 14 are temporarily fixed on the slip hinged-support 15, perforate 19 back that the other end runs through ball node fixed bearing 16 epiplastrons 18 is fixed with ground tackle 9.To be positioned on the truss string structure 14 with many truss string structure rod member 13 ends of ground tackle 9 the same sides and link to each other with fixing ball node 7 simultaneously, afterwards slip hinged-support 15 is fixed on the structural column top of truss string structure 14 1 sides, the lower end of ball node fixed bearing 16 top and the bottom braced structuress 1 is fixed on the structural column top of truss string structure 14 opposite sides, remove the temporary fixed and stretch-draw drag-line 6 of drag-line 6 on the slip hinged-support 15 to design internal force value, can finish the installation process of every Pin truss string structure.
In the truss string structure use, when external force effect downhaul 6 internal force increased, damping spring 10 was with tension, elongation, cause inverted T-shaped sliding panel 3 to produce horizontal movement by means of column rolling bearing 8, alleviate the stressed of drag-line 6 by distortion, avoid drag-line 6 fractures, play the load abirritation.
Claims (4)
1. one kind has the ball node fixed bearing that relaxes the drag-line endogenetic process, it is characterized in that: described ball node fixed bearing comprises lower support structure (1), pre-buried backing plate (2), inverted T-shaped sliding panel (3), many embedded bars (4), fixedly ball node (7), a plurality of column rolling bearing (8), ground tackle (9), many damping springs (10) and bearing (11); Wherein the lower end of lower support structure (1) is fixed on the top of large-span space structure post; Pre-buried backing plate (2) is horizontally set on the surface of lower support structure (1); Inverted T-shaped sliding panel (3) constitutes by bottom wing listrium (17) with along the vertically disposed web of fore-and-aft direction (18) one, wherein the bottom surface of bottom wing listrium (17) is connected along the column rolling bearing (8) that fore-and-aft direction is arranged side by side in the surperficial side of pre-buried backing plate (2) with a plurality of standoff distances, therefore can horizontally slip, the middle part of web (18) is formed with a perforate (19) that is used for running through drag-line (6); Bearing (11) is fixed on the surperficial opposite side of pre-buried backing plate (2); The lower end standoff distance of many embedded bars (4) is vertically set on the inside of lower support structure (1), the end, front and back of bearing (11) is run through in embedded bar (4) upper end that wherein is positioned at bearing (11) below, and the mode of utilizing nut (5) to be tightened on embedded bar (4) upper end will interfix between bearing (11) and pre-buried backing plate (2) and the lower support structure (1); Fixedly ball node (7) is hollow ball, is installed in the upper end of bearing (11), and its top links to each other with the end of a plurality of truss string structure rod members (13) simultaneously; Ground tackle (9) is installed in and is positioned at inverted T-shaped sliding panel (3) and fixing drag-line (6) end between the ball node (7), is used for the end of drag-line (6) is fixed; Many damping springs (10) standoff distance level be connected the medial surface of inverted T-shaped sliding panel (3) epiplastron (18) and fixedly ball node (7) go up between the corresponding surface.
2. according to claim 1 have a ball node fixed bearing that relaxes the drag-line endogenetic process, it is characterized in that: described bearing (11) is made of base plate (20) and cross carriage (21), wherein base plate (20) is horizontally disposed with, carriage (21) is installed in the middle part, surface of base plate (20), and the upper center of carriage (21) is circular shape.
3. according to claim 1 have a ball node fixed bearing that relaxes the drag-line endogenetic process, it is characterized in that: described many damping springs (10) are arranged on and are positioned at inverted T-shaped sliding panel (3) and fixedly the drag-line (6) between the ball node (7) is on every side.
4. according to claim 1 have a ball node fixed bearing that relaxes the drag-line endogenetic process, and it is characterized in that: described web (18) both sides are provided with many stiffeners (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210075995 CN102561516B (en) | 2012-03-21 | 2012-03-21 | Sphere joint fixing support with effect of relieving internal force of stay rope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210075995 CN102561516B (en) | 2012-03-21 | 2012-03-21 | Sphere joint fixing support with effect of relieving internal force of stay rope |
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| Publication Number | Publication Date |
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| CN102561516A CN102561516A (en) | 2012-07-11 |
| CN102561516B true CN102561516B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210075995 Expired - Fee Related CN102561516B (en) | 2012-03-21 | 2012-03-21 | Sphere joint fixing support with effect of relieving internal force of stay rope |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108488147B (en) * | 2018-04-11 | 2024-03-08 | 河南大学 | Intelligent load alleviation device |
| CN112922340B (en) * | 2021-01-28 | 2022-02-08 | 北京工业大学 | Construction forming method of full-tension crossed cable structure based on tension self-adjusting node |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000046107A (en) * | 1998-07-31 | 2000-02-18 | Naganori Sato | Slide mechanism for base isolation |
| CN100443682C (en) * | 2004-04-02 | 2008-12-17 | 贵州工业大学 | Method for fabricating new type tension chord truss frame in large span |
| DE102004048969B3 (en) * | 2004-10-07 | 2006-05-18 | Kröger, Claus | Mounting system for constructions projecting from building structures |
| CN100351473C (en) * | 2004-11-19 | 2007-11-28 | 北京工业大学 | Multiple prestress steel structure shock-proof sliding estastic support seat |
| CN201865240U (en) * | 2010-10-28 | 2011-06-15 | 中国民航大学 | Double-cable truss string structure with damping spring levers |
| CN202039487U (en) * | 2011-04-22 | 2011-11-16 | 深圳市三鑫幕墙工程有限公司 | Guide rope pulley mechanism and building curtain wall fixing device |
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Granted publication date: 20131002 Termination date: 20140321 |