CN104234191A - Stay-cable transformation layer - Google Patents
Stay-cable transformation layer Download PDFInfo
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- CN104234191A CN104234191A CN201410286112.8A CN201410286112A CN104234191A CN 104234191 A CN104234191 A CN 104234191A CN 201410286112 A CN201410286112 A CN 201410286112A CN 104234191 A CN104234191 A CN 104234191A
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- conversion layer
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- suspension cable
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Abstract
The invention discloses a stay-cable transformation layer and relates to a new technique of implementing a design of a large-span building. Components are mutually combined in a building structure to achieve the function of being similar to the transformation layer, the stay-cable transformation layer can serve as the transformation layer of the building, the lower end of a frame column (3) is subjected to hole opening to have a steering gear (7) embedded, stay cables (6) are combined to have a beam slab lifted, end portions of the stay cables are combined with anchorage devices (2 and 4) tensioning backwards, and tension of internal force of prestressed tendons is realized through tensioning of the anchorage devices (2 and 4). By the arrangement, the design of the entire large-span building is simpler, and design of extra-large-span buildings can be more easily realized.
Description
Technical field:
The present invention relates to a kind of building conversion layer large span designing technique, but concrete and the amount of reinforcement of building frame post and beam is not substantially rolled up, and there is the novel beam of good anti-seismic performance, we are referred to as suspension cable conversion layer, belong to design of building structures technical field.
Background technology:
Expanding economy at any time, increasing architectural design because the needs of function, and in structure design, is designed with conversion layer structure.Current building transferred floor design generally adopts technology to have: prestressed girder structure, thick plate structure, box beam structure, arch structure, steel truss structure.These existing transferred floor design technology exist or because cost is high, or the shortcoming such as construction is inconvenient, and novel suspension cable transferred floor design technology well solves these problems, and has lightweight, and reinforcing bar use amount is few, facilitates the advantages such as stretch-draw.
Summary of the invention:
In order to overcome the various shortcoming of existing transferred floor design technology, the present invention proposes the technology of a kind of new conversion layer large span design, we are referred to as suspension cable conversion layer.This conversion layer can not only realize the large span design of building conversion layer very easily, also has the advantage of structural seismic simultaneously, does not but roll up the consumption of concrete and reinforcing bar.
The technical solution adopted for the present invention to solve the technical problems is: a kind of design of building structures of building suspension cable conversion layer, and described conversion layer comprises ground tackle, drag-line, stretch-draw adjuster, steering gear, backing plate etc.In described conversion layer concrete pouring construction process, pre-buried upper steering gear, by the time when described conversion layer concrete reaches design strength, the stretch-draw of drag-line internal force is realized by the ground tackle stretch-draw of described stay cable end, described drag-line passes the arc sleeve of steering gear, the beam slab of whole building structure of being sling by steering gear, and described suspension cable transferred floor design technology is a kind of novel building large span designing technique, more safer than conventional prestressed girder large span designing technique, construct more convenient.
The invention has the beneficial effects as follows: the large span design that just can realize to light and flexible conversion layer, and have the advantage realizing building structure aseismatic, the beam of drag-line to conversion layer is applied with favourable precompression simultaneously, and beam can be avoided to occur direct tension cracking.
On the basis of technique scheme, the present invention makes following expansion:
The present invention proposes the design of a kind of novel conversion layer large span in building structure.It is a kind of by floor as being a beam slab emptied, by the stretch-draw of drag-line, realize the large span design of conversion layer, because drag-line is distributed in the vertical plane of conversion layer axis, according to the structure design of suspension cable conversion layer, the enabling hole needs of conversion layer can not be affected.
Described suspension cable conversion layer, be usually used in two across or three across continuous beam large span design, when employing two span continuous beam design, two is equal across span, because story height is equal, so drag-line can realize self internal force offset balance, when adopting three-span continuous beam design, two end bay spans are equal, middle span can free setting according to actual needs, the internal force that such drag-line also can realize self offsets balance, due to prestressed cable in use, along with the growth of service time, Relaxation of prestressing phenomenon is had inside drag-line, in order to eliminate Relaxation of prestressing phenomenon, in advance stretch-draw adjuster can be set in the middle of drag-line, the Main Function of stretch-draw adjuster is not used to dock prestressed cable, but pass through the rotation of stretch-draw adjuster screw shell, realize the docking stretch-draw of both sides drag-line, and then regulate the internal force of drag-line.
In a preferred embodiment of the present invention, steering gear in described conversion layer structure is one and is made by the material of high strength and low friction, it can be high-strength steel or for other Materials with High Strength, steering gear there is arc sleeve, according to the stretch-draw shape of drag-line, the corresponding arcuate shape formulating correspondence, to reduce the frictional force of drag-line in sleeve.
In a preferred embodiment of the present invention, a supporting plate is arranged at steering gear bottom, holds up the bottom of frame column, and the benefit designed like this is that the structure design of whole Vierendeel girder only needs general mechanical model, and frame column still mainly bears the effect of axial pressure.
In a preferred embodiment of the present invention, described ground tackle is the ground tackle of post stretching, the stretch-draw of drag-line adopts end stretch-draw, and the benefit of design is like this that the construction of Novel inclined drag-line conversion layer does not need special construction stretching machine, and the tensioning equipment existed in the market now just can directly use.
In a preferred embodiment of the present invention, stretch-draw adjuster can regulate the size of both sides drag-line power, realizes the effect eliminating drag-line Relaxation of prestressing.
In a preferred embodiment of the present invention, described suspension cable conversion layer can be divided into uniaxially guy system and biaxially guy system as required, described drag-line mutually combine be arranged in described conversion layer axis vertical plane on, the frame column of pre-buried steering gear, associated frame members post bottom has portal design in advance.
In a preferred embodiment of the present invention, in suspension cable conversion layer pillar carry out and punch in advance and build process, in the process of construction, pre-plugged steering gear.
In a preferred embodiment of the present invention, the beam on conversion layer upper strata carries out haunch design, improve the intensity of beam-ends local, avoid end anchorage to destroy, ground tackle applies pressure to backing plate, and power is divided into the component of level and vertical both direction by backing plate, be applied to Vierendeel girder and frame column respectively, according to the size of component, Vierendeel girder and the corresponding increasing section of frame column amass, to bear corresponding pressure.
In a preferred embodiment of the present invention, in three-span continuous beam suspension cable transferred floor design, in steering gear place, due to drag-line to steering gear make a concerted effort obliquely, in order to make frame column only be subject to the effect of vertical axis power, the beam at drag-line horizontal segment place is taked to thicken design, makes it to bear horizontal force action, we are referred to as deepened beam, are preset with the duct of interspersed drag-line when deepened beam is built.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described in more detail.
Fig. 1 is two across suspension cable conversion layer structure figure;
Fig. 2 is three across suspension cable conversion layer structure figure;
Fig. 3 be with stretch-draw adjuster two across suspension cable conversion layer structure figure;
Fig. 4 is diverter structure figure;
Fig. 5 is the structure chart of stretch-draw adjuster;
Fig. 6 is the hand of spiral figure of stretch-draw adjuster;
Fig. 7 is the cross-sectional view of sleeve;
In figure, each label parts are respectively:
1. backing plate, 2. ground tackle, 3. frame column, 4. ground tackle, 5. backing plate, 6. drag-line, 7. steering gear, 10. ground tackle, 11. backing plates, 12. frame constructions, 13. ground tackles, 14. backing plates, 15. drag-lines, 16. steering gears, 17. steering gears, 18. deepened beams, 21. drag-lines, 22. nuts, 23. screw threads, 24. sleeves, 25. screw threads, 26. screw threads, 27. nuts, 31. arc sleeves, 32. supporting plates, 40. stretch-draw adjusters.
Detailed description of the invention
The parts of identical label are same parts, though title possibility is little, there is any discrepancy, do not affect the understanding of the present invention and technical scheme.
Fig. 1 is the suspension cable transferred floor design of two span continuous beam, because span is equal, the horizontal component of suspension cable can be cancelled out each other, middle boxes trestle point load holds up at the bottom of post by steering gear (7), and steering gear is sling by drag-line (6), drag-line two ends are anchored in the beam of upper strata, drag-line (6) is by the ground tackle (2) at two ends, (4) prestressed stretch-draw is realized, building upper strata Liang Shi, beam-ends pre-plugged has backing plate (1), (5), in order to ensure the node strength of frame construction, beam-ends local adopts haunch design, as depicted in figs. 1 and 2.
In order to meet larger span, found out the suspension cable transferred floor design technology of three-span continuous beam, as shown in Figure 2, wherein two end bay spans are equal, and its structural mechanics principle is similar to Fig. 1.
Due in the use procedure of suspension cable conversion layer, there is stress relaxation phenomenon in prestressed cable inside, lax in order to eliminate stress, can in the structure of Fig. 1, at drag-line (6), stretch-draw adjuster (40) is set, by the rotation of sleeve (24), the drag-line on docking stretch-draw both sides, prevent drag-line from rotating by holding nut (22) (27), by turnbarrel (24), screw thread (25) in sleeve slowly with screw thread (23) (26) rotating clutch stretch-draw, Fig. 6 is exactly the screw thread setting of stretch-draw adjuster, can find out, screw thread (25) has the screw thread of positive and negative both direction, sleeve cross section is regular hexagon, as shown in Figure 7.
Nut (22) (27), when stretch-draw, to be held with a firm grip by construction equipment and to dock stretch-draw close, while stung the drag-line on tight both sides by turnbarrel (24) by stretch-draw adjuster.
Claims (9)
1. build the design of building structures of suspension cable conversion layer for one kind, described conversion layer comprises ground tackle, drag-line, stretch-draw adjuster, steering gear, backing plate, in described conversion layer concrete pouring construction process, pre-buried upper steering gear, by the time when described conversion layer concrete reaches design strength, the stretch-draw of drag-line internal force is realized by the ground tackle stretch-draw of described stay cable end, described drag-line is through the arc sleeve of steering gear, to be sling by steering gear the beam slab of whole building structure, described suspension cable transferred floor design technology is a kind of novel building large span designing technique, more safer than conventional conversion layer large span designing technique, construct more convenient.
2. suspension cable conversion layer according to claim 1, is characterized in that: described suspension cable conversion layer be applied to building longspan structure design, according to the difference of span, can be divided into two across with three across two kinds of design schemes, two across design time, be that two grades are across design; Three across when designing, two end bay spans are equal, drag-line (6), (15) are external prestressing steels, through the bottom hole of conversion layer intermediolateral column, are held up the point load of whole frame column by steering gear (7), (16), (17).
3. the suspension cable conversion layer according to right 1, it is characterized in that: described suspension cable conversion layer utilizes floor plates to realize large span design, whole floor is regarded as a beam emptied, and beam can be non-prestressed continuous beam, the backing plate of ground tackle is embedded in beam end.
4. the suspension cable conversion layer according to right 1, it is characterized in that: described suspension cable conversion layer can be divided into uniaxially guy system and biaxially guy system as required, described drag-line mutually combine be arranged in described conversion layer axis vertical plane on, the frame column of pre-buried steering gear, associated frame members post bottom has portal design in advance.
5. the suspension cable conversion layer according to right 1, it is characterized in that: described drag-line (6) is in advance through the arc sleeve (31) of described steering gear, the sleeve (31) of steering gear is according to the stretch-draw angle case of drag-line, be made into corresponding arc, arc sleeve adopts the material of high strength and low friction to make, supporting plate (32) is arranged at steering gear bottom, holds up at the bottom of the post of middle boxes trestle.
6. suspension cable conversion layer according to claim 1, it is characterized in that: described portion of Vierendeel girder end office (EO), conversion layer upper strata adopts haunch design, improve the intensity of beam-ends local, avoid end anchorage to destroy, ground tackle applies pressure to backing plate, and power is divided into the component of level and vertical both direction by backing plate, be applied to Vierendeel girder and frame column respectively, according to the size of component, Vierendeel girder and the corresponding increasing section of frame column amass, to bear corresponding pressure.
7. suspension cable conversion layer according to claim 1, it is characterized in that: described backing plate (1), (5), (11), (14) are embedded in concrete, realize drag-line (15) by the post stretching ground tackle (2) of end, (4), (10), (13), the stretch-draw of (6) internal force regulates.
8. suspension cable conversion layer according to claim 1, it is characterized in that: described stretch-draw adjuster (40) can solve the problem of prestressed cable (6) in use Relaxation of prestressing, constantly rotated by stretch-draw adjuster screw shell (24), realize the docking stretch-draw of two ends prestressed cable.
9. suspension cable conversion layer according to claim 1, it is characterized in that: in three-span continuous beam suspension cable transferred floor design, take deepened beam (18) to design at the beam at drag-line horizontal segment place, make it to bear horizontal force action, deepened beam is preset with the duct of interspersed drag-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410286112.8A CN104234191A (en) | 2014-06-24 | 2014-06-24 | Stay-cable transformation layer |
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| CN201410286112.8A CN104234191A (en) | 2014-06-24 | 2014-06-24 | Stay-cable transformation layer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086481A (en) * | 2017-12-21 | 2018-05-29 | 济南轨道交通集团有限公司 | A kind of metro depot upper cover Estate Development Self-resetting integral structure and method |
| CN108104509A (en) * | 2017-12-21 | 2018-06-01 | 济南轨道交通集团有限公司 | A kind of passive room structure of metro depot upper cover Estate Development assembled and method |
| CN109235898A (en) * | 2018-09-19 | 2019-01-18 | 哈尔滨工业大学建筑设计研究院 | A kind of huge space transformational structure of novel large-span prestressed rigid body and its construction method |
| CN112302162A (en) * | 2020-10-30 | 2021-02-02 | 邢台职业技术学院 | Fabricated chord-supported concrete transfer floor structure and construction method thereof |
| CN113958016A (en) * | 2021-10-14 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Multilayer vibration suppression structure with tension assembly |
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| EP0318421A1 (en) * | 1987-11-24 | 1989-05-31 | Adam T. Schildge, Jr. | Cable-stay roof for stadium or arena and method of construction of same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108086481A (en) * | 2017-12-21 | 2018-05-29 | 济南轨道交通集团有限公司 | A kind of metro depot upper cover Estate Development Self-resetting integral structure and method |
| CN108104509A (en) * | 2017-12-21 | 2018-06-01 | 济南轨道交通集团有限公司 | A kind of passive room structure of metro depot upper cover Estate Development assembled and method |
| CN109235898A (en) * | 2018-09-19 | 2019-01-18 | 哈尔滨工业大学建筑设计研究院 | A kind of huge space transformational structure of novel large-span prestressed rigid body and its construction method |
| CN109235898B (en) * | 2018-09-19 | 2020-09-29 | 哈尔滨工业大学建筑设计研究院 | Large-span prestress rigid body giant space conversion structure and construction method thereof |
| CN112302162A (en) * | 2020-10-30 | 2021-02-02 | 邢台职业技术学院 | Fabricated chord-supported concrete transfer floor structure and construction method thereof |
| CN113958016A (en) * | 2021-10-14 | 2022-01-21 | 北京市建筑设计研究院有限公司 | Multilayer vibration suppression structure with tension assembly |
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Application publication date: 20141224 |