Background technology
Stayed structure has become a kind of important form of building structure, it in the application of building field more and more widely, from the discrete structure member to the total system, all often adopt stayed structure from the outdoor inside configuration (indoor) of hanging, and stayed structure is being brought into play important effect in Application in Building, the importance of drag-line improves constantly, itself and the structure of building, use, problems such as finishing and expense are closely related, drag-line becomes important component not replaceable in the building gradually, because drag-line importance reaches not replaceability, then require its Years Of Service must identical with building structure (being not less than 50 years), so the requirement of shelter to drag-line is more and more higher, and the protection system of drag-line directly determines the drag-line life-span.
At present, though cable-stayed bridge cable or drag-line for building have also adopted certain protection system, but aging and damage in various degree just appears in the drag-line of domestic and international many cable stayed bridges or building venue after using more than ten years, many bridges were just changed drag-line one time less than 20 years, failed to reach the long-life requirement with the identical Years Of Service of structure far away.Existing guard system mainly necessarily protects anchor head; and outside the drag-line cable body is exposed to; main HPDE (high density polyethylene (HDPE)) by himself is anticorrosion; but in fact HPDE is aging easily; its durability is limited; so can occur usually that anchor head gets rusty and HDPE cracking causes situations such as steel wire corrosion, the drag-line life-span is affected easily.So except the protection anchor head, the reply cable body protects.Particularly use in architecture indoor, except anticorrosion, drag-line collsion damage and fire burn in use also can cause in various degree injury to drag-line, and drag-line should be able to reach corresponding fire endurance requirement as structural element.
The utility model content
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and the long-acting building guy cable that a kind of protection effect is good, the life-span is long is provided.
First kind of technical scheme that the utility model adopted is: the utility model comprises the drag-line cable body; the drag-line anchor head; the end of described drag-line cable body is passed building structure and is fixedlyed connected with described drag-line anchor head; the part ladle cover that described drag-line anchor head stretches out described building structure has protective cover; described protective cover fixedly connected with described building structure and with described drag-line anchor head ladle cover in inside; fill anticorrosion grease in the described protective cover; space filling-foam agent between described drag-line cable body and described drag-line anchor head and the described building structure; described blowing agent top sealing part is perfused with cement sand bed; described cement sand bed top is provided with steel deck-plate; described steel deck-plate and described building structure are sealed and matched, and the outside of described drag-line cable body is provided with the additional protection layer.
Described additional protection layer comprises the flameproof fabric that is wrapped in around the described drag-line cable body, be wrapped in steel sleeve around the described flameproof fabric, be coated on the fire resistant coating of described steel sleeve external surface.
The external surface of described protective cover is zinc-plated or be coated with fireproof paint.
Described drag-line anchor head is zinc-plated.
The center of described drag-line cable body is steel strand or parallel steel wire, described steel strand or parallel steel wire outer wrapping polyester tape, the double-deck high density polyethylene (HDPE) anticorrosive coat of described polyester tape peripheral hardware.
Be connected by welded seal or by screw between described protective cover and the described building structure.
Second kind of technical scheme that the utility model adopted is: the utility model comprises the drag-line cable body; the drag-line anchor head; the end of described drag-line cable body is passed building structure and is fixedlyed connected with described drag-line anchor head; the part ladle cover that described drag-line anchor head stretches out described building structure has protective cover; described protective cover fixedly connected with described building structure and with described drag-line anchor head ladle cover in inside; fill anticorrosion grease in the described protective cover; space filling-foam agent between described drag-line cable body and described drag-line anchor head and the described building structure; described blowing agent top sealing part is perfused with cement sand bed; described cement sand bed top is provided with steel deck-plate; described steel deck-plate and described building structure are sealed and matched, and the outside of described drag-line cable body is provided with the additional protection layer.
Described additional protection layer comprises the steel sleeve that is enclosed within described drag-line cable body periphery, be poured into screed between described steel sleeve and the described drag-line cable body external surface, be coated on the fire resistant coating of described steel sleeve external surface.
The external surface of described protective cover is zinc-plated or be coated with fireproof paint.
Described drag-line anchor head is zinc-plated.
The center of described drag-line cable body is steel strand or parallel steel wire, described steel strand or parallel steel wire outer wrapping polyester tape, the double-deck high density polyethylene (HDPE) anticorrosive coat of described polyester tape peripheral hardware.
Be connected by welded seal or by screw between described protective cover and the described building structure.
The beneficial effects of the utility model are: since described protective cover of the present utility model fixedly connected with described building structure and with described drag-line anchor head ladle cover in inside, fill anticorrosion grease in the described protective cover, space filling-foam agent between described drag-line cable body and described drag-line anchor head and the described building structure, described blowing agent top sealing part is perfused with cement sand bed, described cement sand bed top is provided with steel deck-plate, described steel deck-plate and described building structure are sealed and matched, the outside of described drag-line cable body is provided with the additional protection layer, utilize described protective cover, described anticorrosion grease, described blowing agent, described steel deck-plate protects described drag-line anchor head comprehensively, make described drag-line anchor head be in sealing state, reach the effect of stopping air and moisture attacks drag-line anchor head, favorable anti-corrosion effect, the application life of improving drag-line; Described steel deck-plate and described building structure are sealed and matched, the general welding manner that adopts is fixed described steel deck-plate and described building structure, and that described cement sand bed can effectively prevent at welding process Yin Wendu is too high and cause described blowing agent situation on fire to take place, so the utility model protection effect is good, the life-span is long;
Because comprising, the described additional protection layer of first kind of technical scheme of the utility model is wrapped in described drag-line cable body flameproof fabric on every side, be wrapped in described flameproof fabric steel sleeve on every side, be coated on the fire resistant coating of described steel sleeve external surface, described flameproof fabric can wrap described drag-line cable body earlier in work progress, described drag-line cable body is carried out temporary protection, can effectively prevent the paroxysmal short time carelessness in job site, the unexpected injury that the drag-line cable body is caused, described steel sleeve is set in the periphery of described flameproof fabric again and fire resistant coating is set at described steel sleeve external surface, described drag-line cable body is protected comprehensively, described steel sleeve can effectively be protected the drag-line cable body, avoid the collision injury in long-term the use, described fire resistant coating then reaches the fire prevention purpose, the whole thus barrier propterty that improves drag-line, guarantee and improve the Acceptable life of drag-line, so the utility model protection effect is good, life-span is long;
Because the described additional protection layer of second kind of technical scheme of the utility model comprises the steel sleeve that is enclosed within described drag-line cable body periphery, be poured into screed between described steel sleeve and the described drag-line cable body external surface, be coated on the fire resistant coating of described steel sleeve external surface, adopt described perfusion mortar layer to the drag-line cable body prevent fires, preventing collision protection, can reduce the described fire resistant coating thickness on described steel sleeve surface, thereby effectively reduce the protection cost, so the utility model protection effect is good, cost is low;
Because the external surface of described protective cover is zinc-plated or be coated with fireproof paint, can further improve the anticorrosion or fireproof performance of described drag-line anchor head, so the utility model barrier propterty is better.
The specific embodiment
Embodiment one:
As Fig. 1; shown in Figure 2; the utility model comprises drag-line cable body 1; drag-line anchor head 2; the end of described drag-line cable body 1 is passed building structure 3 and is fixedlyed connected with described drag-line anchor head 2; the part ladle cover that described drag-line anchor head 2 stretches out described building structure 3 has protective cover 21; described protective cover 21 fixedly connected with described building structure 3 and with described drag-line anchor head 2 ladle covers in inside; fixedly connected by screw 4 between described protective cover 21 and the described building structure 3; can certainly fix by welded seal; fill anticorrosion grease 22 in the described protective cover 21; space filling-foam agent 23 between described drag-line cable body 1 and described drag-line anchor head 2 and the described building structure 3; described blowing agent 23 top sealing parts are perfused with cement sand bed 24; described cement sand bed 24 tops are provided with steel deck-plate 25; described steel deck-plate 25 is sealed and matched with described building structure 3; the outside of described drag-line cable body 1 is provided with the additional protection layer; described additional protection layer comprises the flameproof fabric 11 that is wrapped in around the described drag-line cable body 1; be wrapped in described flameproof fabric 11 steel sleeve 12 on every side; be coated on the fire resistant coating 13 of described steel sleeve 12 external surfaces; described fire resistant coating 13 can be determined suitable thickness according to the fire endurance of drag-line; the external surface of described protective cover 21 is zinc-plated; can further improve the antiseptic property of described drag-line anchor head; the external surface of certain described protective cover 21 also can be coated with fireproof paint; can further improve the fireproof performance of described drag-line anchor head; described drag-line anchor head 2 is zinc-plated; the center of described drag-line cable body 1 is a parallel steel wire 10; can certainly adopt steel strand; described steel strand 10 outer wrapping polyester tapes 15; the double-deck high density polyethylene (HDPE) anticorrosive coat 16 of described polyester tape 15 peripheral hardwares, described drag-line cable body 1 itself has stronger durability.
In work progress, it is wounded easily or easily by the Construction of Steel Structure accident burn that catches fire that the 1 original protection of dispatching from the factory of described drag-line cable body is disengaged the back, accident all is at random and the short time, though its injury is not heavy, but the life-span that all can reduce drag-line maybe need be paid bigger processing cost, so the crashproof fire prevention measure in the work progress is extremely important, the utility model adopts the described flameproof fabric 11 of described drag-line cable body 1 outsourcing one deck to prevent fires, and then puts pvc pipe and carry out interim Anti-bumping protection; Facts have proved that this guard system prevents that effectively the sudden short time carelessness in job site, accident from damaging drag-line.After construction is finished; need drag-line is carried out comprehensive integrated protection of long-term operational phase; comprise anticorrosion, the flameproof protection of anchor head and cable body is crashproof, flameproof protection; anticorrosion for anchor head and steel wire; adopt anticorrosion grease+protective cover+blowing agent protective system; earlier described anticorrosion grease 22 is filled up described drag-line anchor head 2 inner chambers protection steel wire; then described protective cover 21 is covered sealing and press completely described anticorrosion grease 22 again; in described building structure 3 is pressure-bearing node (steel conduit), fill polyurethane foams 23, reach the effect of stopping air and moisture attacks anchor head.For cable body; earlier the outer pvc pipe of construction stage is removed; keep original flameproof fabric; described steel sleeve 12 is installed thereon; can effectively protect cable body to avoid the long-term collision injury of using; then at described steel sleeve 12 external surfaces according to the certain thickness fire resistant coating 13 of fire endurance brushing; reach flameproof effect thus; be that a steel deck-plate is welded in pressure-bearing node (steel conduit) termination at described building structure 3 at last; the sealing steel conduit also is tightly connected with described steel sleeve 12; cause blowing agent on fire for fear of welding high temperature, so adopt described cement sand bed 24 shutoff in termination certain limit (about 200mm).Thus, whole drag-line all is wrapped within the protection system of a sealing, can effectively anticorrosion, crashproof and fire prevention.
The damage of colliding or catching fire drag-line is caused in the work progress can effectively be avoided or reduce to the utility model, reduce accident risk, more can reach anticorrosion, the crashproof and fireproof requirement of shelter of drag-line integral body in the long-term use (comprising anchor head and cable body), the application life that can guarantee and improve drag-line.
Embodiment two:
As Fig. 1, shown in Figure 3, the difference part of present embodiment and embodiment one is described additional protection layer, the described additional protection layer of present embodiment comprises the steel sleeve 12 that is enclosed within described drag-line cable body 1 periphery, be poured into the screed 14 between described steel sleeve 12 and described drag-line cable body 1 external surface, be coated on the fire resistant coating 13 of described steel sleeve 12 external surfaces, the protection of 14 pairs of described drag-line cable body 1 of described perfusion mortar layer can obtain the protection effect of expection, reach the protection purpose, therefore, the comparable embodiment one of fire resistant coating 13 thickness of the setting of described steel sleeve 12 external surfaces suitably reduces, to reduce the whole cost of drag-line.
All the other features of present embodiment are with embodiment one.
The utility model can be widely used in building field.