CN203145326U - Adjustable prestressed stay cable sliding support seat - Google Patents
Adjustable prestressed stay cable sliding support seat Download PDFInfo
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- CN203145326U CN203145326U CN 201320169798 CN201320169798U CN203145326U CN 203145326 U CN203145326 U CN 203145326U CN 201320169798 CN201320169798 CN 201320169798 CN 201320169798 U CN201320169798 U CN 201320169798U CN 203145326 U CN203145326 U CN 203145326U
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- drag
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- vertical panel
- sliding support
- fixed head
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Abstract
The utility model relates to an adjustable prestressed stay cable sliding support seat which comprises a pre-buried backing plate, an inverted-T-shaped supporting seat, a plurality of pre-buried steel ribs, a plurality of cylindrical rolling bearings, a plurality of high-strength bolts, a plurality of prestressed adjusting nuts, a plurality of limiting nuts, one or two anchoring devices and a movable stay cable fixing plate. According to the adjustable prestressed stay cable sliding support seat disclosed by the utility model, a stay cable through hole is reserved in the inverted-T-shaped supporting seat so as to facilitate stay cable tensioning, a stay cable can be anchored when the cable force is tensioned to a set value, the internal force of the stay cable can be adjusted through controlling the screwing directions and thread pitches of the prestressed adjusting nuts once the cable force deviation is caused due to design or construction change, the construction efficiency is increased greatly, and the construction period is shortened, so that the construction speed can be increased; and after a building is put into use, once the abnormality of the cable force occurs, the internal force of the stay cable can be adjusted through controlling the screwing directions and thread pitches of the prestressed adjusting nuts if cable replacement or tension supplement is carried out, and the same effect can be achieved but the economical efficiency is more obvious, so that the economical efficiency is high.
Description
Technical field
The utility model belongs to prestressed steel structure technical field in the building structure, especially relates to a kind of adjustable prestressed cable sliding support.
Background technology
Extensive use along with the large span space steel work, the Prestressed Space steel work because of its have stressed rationally, big, the lightweight characteristics of rigidity have also obtained tremendous development, all adopted large span to open string beam 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 prestressed structure construction, drag-line is arranged on the main structure below usually, and is connected by strut with main structure, and the main structure arch camber is to design shape after the stretch-draw, and the while rod member begins stressed, can effectively control the distortion 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 useful achievements.
But, because Prestressed Space steel work The Application of Technology is many in nearly 12 years, can cause damage because of corrosion and fatigue under the prestressed cable long-term work, produce lax.Though the Suo Li relaxation problem has obtained researcher's attention, common way is to change rope, stretch-draw again, influences because cable-stayed bridge cable is subjected to outdoor environment, corrodes more seriously, not only influences attractive in appearance but also be unfavorable for safety, and therefore changing rope is more common in the cable stayed bridge maintenance works.And the large span space steel work; at the indoor environment downhaul outer sleeve protection is arranged; corrosion influence is less and controlled, therefore whether changes rope, stretch-draw does not obtain many-sidedly discussing and reaching an agreement as yet again, and it is also rare that document is used in referential engineering practice.From the construction aspect, the scene often shifts to an earlier date sealing off and covering anchorage for overworking, can't be by stretch-draw end fine setting Suo Li (Wu Wen thereby cause, Tang Hui. the design and construction [J] of tariff free zone, Zhuhai Dongdaemun prestressed cable. middle External building, 2002,4:70～71) increase or reduce Suo Li and make design reach re-set target, the result causes the passive modification of design, cause that not only cost increases, run counter to the design concept of green building low-carbon environment-friendly, and changed the quiet power design performance of structure virtually, bring potential risk thereby use to structural safety.
To sum up, also there is deficiency in Prestressed Space steel work technology to the Suo Li relaxation problem in design and construction, remains further to be discussed and research.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide that a kind of safety is higher, the adjustable prestressed cable sliding support of more convenient operation.
In order to achieve the above object, the adjustable prestressed cable sliding support that provides of the utility model comprises pre-buried backing plate, inverted T shape bearing, many embedded bars, a plurality of column rolling bearing, a plurality of high-strength bolt, a plurality of prestressing force adjusting nut, a plurality of stop nut, one or two ground tackles and movable drag-line fixed heads; Wherein pre-buried backing plate utilizes many embedded bars to be arranged on the end face of Prestressed Space steel work middle and lower part braced structures; A plurality of column rolling bearing standoff distances are fixed on the surface of pre-buried backing plate; The inverted T shape bearing is made of level board and vertical panel, and wherein the level board freely-supported is on a plurality of column rolling bearings, and the vertical panel middle part is formed with one or two drag-line through holes; The middle part of movable drag-line fixed head also is formed with one or two drag-line through holes, is arranged on the vertical panel inboard in the mode parallel with vertical panel; Utilize many high-strength bolts, a plurality of prestressing force adjusting nut and a plurality of stop nut to interconnect between vertical panel and the movable drag-line fixed head, wherein the prestressing force adjusting nut is positioned on vertical panel and the movable drag-line fixed head lateral surface, stop nut is positioned on vertical panel and the movable drag-line fixed head medial surface, and the drag-line through hole on the vertical panel is corresponding with the drag-line through hole position on the movable drag-line fixed head, runs through being provided with a drag-line in each drag-line through hole; Ground tackle is installed on the drag-line between vertical panel and the movable drag-line fixed head.
Be connected with stiffening rib between the side of described inverted T shape bearing upper vertical plate and the surface of level board, to improve the lateral stability of inverted T shape bearing.
The adjustable prestressed cable sliding support that the utility model provides has following beneficial effect: 1) can improve speed of application: leave drag-line on the inverted T shape bearing and pass the hole, can doublely do the stretch-draw bearing of jack, be convenient to drag-line stretch-draw; When being stretched to design load, Suo Li gets final product sealing off and covering anchorage.In case because designing or constructing to change and cause the Suo Li deviation, can adjust drag-line internal force by direction of rotation and the pitch of control prestressing force adjusting nut, improved stretching construction efficient greatly, save the duration.2) economy height: after building comes into operation, in case it is unusual Suo Li to occur, if change rope or mend stretch-draw, will influence and use and into and out of field cost height, adopt prestressed cable sliding support of the present invention, can adjust drag-line internal force by direction of rotation and the pitch of control prestressing force adjusting nut, effect is identical but economy is more obvious.
Description of drawings
The adjustable prestressed cable sliding support elevation that Fig. 1 provides for the utility model;
The adjustable prestressed cable sliding support vertical view that Fig. 2 provides for the utility model;
The adjustable prestressed cable sliding support left view that Fig. 3 provides for the utility model;
The space tension string beam structure axonometric drawing of the adjustable prestressed cable sliding support that the utility model is installed provides is provided Fig. 4;
The adjustable prestressed cable sliding support vertical view that Fig. 5 provides for the utility model that is used for dual-prestressed drag-line;
Fig. 6 is the adjustable prestressed cable sliding support shown in Fig. 5 and a string beam column spare connecting portion schematic diagram.
Wherein: lower support structure 1, pre-buried backing plate 2, inverted T shape bearing 3, embedded bar 4, column rolling bearing 5, high-strength bolt 6, prestressing force adjusting nut 7, stop nut 8, ground tackle 9, drag-line 10, movable drag-line fixed head 11, stiffening rib 12, fixed-hinged support 13, slip hinged-support 14, the truss 15 that winds up, ball node 16, strut 17, level board 18, vertical panel 19.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the adjustable prestressed cable sliding support that the utility model provides is elaborated.
As Fig. 1～shown in Figure 3, the adjustable prestressed cable sliding support that the utility model provides comprises pre-buried backing plate 2, inverted T shape bearing 3, many embedded bars 4, a plurality of column rolling bearing 5, a plurality of high-strength bolt 6, a plurality of prestressing force adjusting nut 7, a plurality of stop nut 8, one or two ground tackles 9 and movable drag-line fixed heads 11; Wherein pre-buried backing plate 2 utilizes many embedded bars 4 to be arranged on the end face of Prestressed Space steel work middle and lower part braced structures 1; A plurality of column rolling bearing 5 standoff distances are fixed on the surface of pre-buried backing plate 2; Inverted T shape bearing 3 is made of level board 18 and vertical panel 19, and wherein level board 18 freely-supporteds are on a plurality of column rolling bearings 5, and vertical panel 19 middle parts are formed with one or two drag-line through holes; The middle part of movable drag-line fixed head 11 also is formed with one or two drag-line through holes, is arranged on vertical panel 19 inboards in the mode parallel with vertical panel 19; Utilize many high-strength bolts 6, a plurality of prestressing force adjusting nut 7 and a plurality of stop nut 8 to interconnect between vertical panel 19 and the movable drag-line fixed head 11, wherein prestressing force adjusting nut 7 is positioned on vertical panel 19 and movable drag-line fixed head 11 lateral surfaces, stop nut 8 is positioned on vertical panel 19 and movable drag-line fixed head 11 medial surfaces, and the drag-line through hole on the vertical panel 19 is corresponding with the drag-line through hole position on the movable drag-line fixed head 11, runs through being provided with a drag-line 10 in each drag-line through hole; Ground tackle 9 is installed on the drag-line 10 between vertical panel 19 and the movable drag-line fixed head 11.
Be connected with stiffening rib 12 between the side of described inverted T shape bearing 3 upper vertical plates 19 and the surface of level board 18, to improve the lateral stability of inverted T shape bearing 3.
The adjustable prestressed cable fixed bearing work progress that now the utility model is provided is described below: during construction, at first by the constructor other end is connected drag-line 10 1 ends on braced structures 1 fixed bearing of Prestressed Space steel work middle and lower part and has run through a drag-line through hole on movable drag-line fixed head 11 and the vertical panel 19 successively, then according to conventional method stretch-draw drag-line 10 to design load, with ground tackle 9 drag-line 10 is fixed on the movable drag-line fixed head 11 afterwards, then movable drag-line fixed head 11 is passed through high-strength bolt 6, prestressing force adjusting nut 7 and stop nut 8 are connected on the inverted T shape bearing 3, afterwards with inverted T shape bearing 3 freely-supporteds on a plurality of column rolling bearings 5, then a plurality of column rolling bearings 5 are fixed on the pre-buried backing plate 2 that is installed on lower support structure 1 end face sealing off and covering anchorage.Need as subsequent design, the adjustment of construction cordless power, then do not do any adjustment, carry out the next procedure construction; As causing actual Suo Li bigger than normal or less than normal because of design or construction change, then can loosen stop nut 8 earlier, and tighten as required or loosen the internal force that prestressing force adjusting nut 7 can increase or reduce drag-line 10, realize behind the sealing off and covering anchorage fine setting to Suo Li.
Embodiment:
As shown in Figure 4, present embodiment provides the application of a kind of adjustable prestressed cable sliding support in tension string beam structure, and the string beam span among the figure is 40m, span centre rise 4m, and the spacing of strut 17 is 5m, and drag-line 10 is two.Wind up truss 15 for just putting pyrometric cone space arch truss, and truss 15 rod members that wind up connect employing ball node 16, and initial tensioning backstay 10 shapes are near parabola, and left end is fixed bearing 13, and right-hand member is sliding support 14.Wherein, the fixed bearing 13 of left end is regular node, and the sliding support 14 of right-hand member adopts this adjustable prestressed cable sliding support.When application drawing 1～design of node shown in Figure 3, consider that last quarter rope adopts two ropes, node shown in Figure 2 is revised, between two drag-lines 10, be provided with stiffening rib 12, to improve the lateral stability of inverted T shape bearing 3, see Fig. 5.Inverted T shape bearing 3 cooperates stiffening rib 12 and lower edge ball node 16 connected modes of the truss 15 that winds up to see Fig. 6.
Adopt a string beam of adjustable prestressed cable sliding support, can in looking for the shape process, change Suo Li by fine setting prestressing force adjusting nut 7, thereby reach design shape more accurately.In addition, if this string beam the Suo Li relaxation problem occurs through the long-term drag-line 10 of back on it that use, can increase Suo Li by the method for regulating prestressing force adjusting nut 7, thereby guarantee that structure uses safety.
Claims (2)
1. adjustable prestressed cable sliding support is characterized in that: described adjustable prestressed cable sliding support comprises pre-buried backing plate (2), inverted T shape bearing (3), many embedded bars (4), a plurality of column rolling bearing (5), a plurality of high-strength bolt (6), a plurality of prestressing force adjusting nut (7), a plurality of stop nut (8), one or two ground tackles (9) and movable drag-line fixed head (11); Wherein pre-buried backing plate (2) utilizes many embedded bars (4) to be arranged on the end face of Prestressed Space steel work middle and lower part braced structures (1); A plurality of column rolling bearings (5) standoff distance is fixed on the surface of pre-buried backing plate (2); Inverted T shape bearing (3) is made of level board (18) and vertical panel (19), and wherein level board (18) freely-supported is on a plurality of column rolling bearings (5), and vertical panel (19) middle part is formed with one or two drag-line through holes; The middle part of movable drag-line fixed head (11) also is formed with one or two drag-line through holes, is arranged on vertical panel (19) inboard in the mode parallel with vertical panel (19); Utilize many high-strength bolts (6) between vertical panel (19) and the movable drag-line fixed head (11), a plurality of prestressing force adjusting nuts (7) and a plurality of stop nut (8) interconnect, wherein prestressing force adjusting nut (7) is positioned on vertical panel (19) and movable drag-line fixed head (11) lateral surface, stop nut (8) is positioned on vertical panel (19) and movable drag-line fixed head (11) medial surface, and the drag-line through hole on the vertical panel (19) is corresponding with the drag-line through hole position on the movable drag-line fixed head (11), runs through being provided with a drag-line (10) in each drag-line through hole; Ground tackle (9) is installed on the drag-line (10) that is positioned between vertical panel (19) and the movable drag-line fixed head (11).
2. adjustable prestressed cable sliding support according to claim 1 is characterized in that: be connected with stiffening rib (12) between the surface of the side of described inverted T shape bearing (3) upper vertical plate (19) and level board (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320169798 CN203145326U (en) | 2013-04-08 | 2013-04-08 | Adjustable prestressed stay cable sliding support seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320169798 CN203145326U (en) | 2013-04-08 | 2013-04-08 | Adjustable prestressed stay cable sliding support seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145326U true CN203145326U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320169798 Expired - Fee Related CN203145326U (en) | 2013-04-08 | 2013-04-08 | Adjustable prestressed stay cable sliding support seat |
Country Status (1)
| Country | Link |
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| CN (1) | CN203145326U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719706A (en) * | 2020-06-30 | 2020-09-29 | 中国建筑第八工程局有限公司 | Method for installing shock insulation support by using steel bar pad and stick method |
| CN112081387A (en) * | 2020-08-26 | 2020-12-15 | 中冶建筑研究总院有限公司 | Intelligent control inhaul cable prestress adjusting device and cable force adjusting and controlling method thereof |
| CN112761171A (en) * | 2021-01-05 | 2021-05-07 | 安徽理工大学 | Anti-slide pile inserter |
-
2013
- 2013-04-08 CN CN 201320169798 patent/CN203145326U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719706A (en) * | 2020-06-30 | 2020-09-29 | 中国建筑第八工程局有限公司 | Method for installing shock insulation support by using steel bar pad and stick method |
| CN112081387A (en) * | 2020-08-26 | 2020-12-15 | 中冶建筑研究总院有限公司 | Intelligent control inhaul cable prestress adjusting device and cable force adjusting and controlling method thereof |
| CN112761171A (en) * | 2021-01-05 | 2021-05-07 | 安徽理工大学 | Anti-slide pile inserter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20140408 |