CN109944157A - The device and installation method of a kind of pair of suspension cable setting flameproof protection - Google Patents
The device and installation method of a kind of pair of suspension cable setting flameproof protection Download PDFInfo
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- CN109944157A CN109944157A CN201910202162.6A CN201910202162A CN109944157A CN 109944157 A CN109944157 A CN 109944157A CN 201910202162 A CN201910202162 A CN 201910202162A CN 109944157 A CN109944157 A CN 109944157A
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Abstract
The present invention relates to the devices and installation method of a kind of pair of suspension cable setting flameproof protection; the fire proof construction of fire proof construction and area of fire protection section L2 including area of fire protection section L1; area of fire protection section L1 includes built-in pipe revealed section (4) and transitional connection pipe (3); the exposed junction of built-in pipe revealed section is arranged in transitional connection pipe (3), and area of fire protection section L2 is the proximal segment suspension cable for being exposed to built-in pipe or more.Fireproof coating layer (7) are arranged in the outer surface of built-in pipe revealed section (4) and transitional connection pipe (3)；Proximal segment suspension cable includes the fireprotection layer (61) being coated on outside suspension cable and the protecting tube (62) being wrapped in outside fireprotection layer.Built-in pipe and transitional connection pipe for steel construction is by the way of sprayed fire proofing dope layer, the pe sheath inflammable for suspension cable surface, then be arranged fireprotection layer and protecting tube, and different parts correspond to different fire prevention measures, meet engineering actual condition, advantageously reduces engineering cost.
Description
Technical field
The present invention relates to a kind of suspension cable firebreak devices and installation side suitable for bridge and other building engineering structures
Method.
Background technique
Suspension cable is widely used in bridge and other Cable Structure engineerings as a kind of prestressed component.Conventional suspension cable is (such as
Wire digging line, guy of twisted steel cable) general outer layer is high density polyethylene (HDPE) sheath or casing, main function is to play anti-corrosion work
With, but high density polyethylene (HDPE) is flammable plastics, so suspension cable is under the reasons such as lightning stroke, car accident and human accident,
Suspension cable is easy to be endangered by caused by fire, to influence the safety of engineering structure operation.
Application No. is 201710731732.1 Chinese patent application files to disclose a kind of Fireproof guy cable and its production side
Method.The program is used is arranged inside and outside bushing pipe outside drag-line, and the frame mode of fireproof material layer is arranged between interior outer liner tube.
The program is that drag-line overall length is provided with fireproof material layer, provides flameproof protection to drag-line cable body, but has some disadvantages: 1) to
The meter Chong for largely changing drag-line increases drag-line self weight, will affect the design use state of entire drag-line；2) due to structure
Complexity, fabrication and installation are inconvenient, and project cost will be significantly increased.
For the flameproof protection purpose of suspension cable, in conjunction with real protection validity, reduce influence to suspension cable itself,
The Multiple factors such as control engineering cost are that those skilled in the art need that thinks deeply to ask come the flameproof protection scheme for designing suspension cable
Topic.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of fire prevention applied to cable-stayed bridge for the above-mentioned prior art
Protective device and installation method, it is contemplated that the actual use occasion of suspension cable, leading to most of origins of fire is usually in bridge
Face or ground (vehicle, artificial etc.), thus the region for being caused suspension cable impaired by fire be also usually suspension cable nearly bridge floor or
Ground region, therefore, the revealed section to suspension cable close to the drag-line section on bridge floor or ground, transitional connection pipe, built-in pipe are prevented
Fiery protection setting meets the fire protection requirement of nearly bridge floor or ground suspension cable, protects suspension cable.
The present invention solves the above problems used technical solution are as follows: the device of a kind of pair of suspension cable setting flameproof protection,
The fire proof construction of fire proof construction and area of fire protection section L2 including area of fire protection section L1, the area of fire protection section L1 includes built-in pipe
The exposed junction of built-in pipe revealed section is arranged in revealed section and transitional connection pipe, transitional connection pipe, and the area of fire protection section L2 is dew
For proximal segment suspension cable more than built-in pipe；Fireproof coating is arranged in the outer surface of the built-in pipe revealed section and transitional connection pipe
Layer；The proximal segment suspension cable includes the fireprotection layer being coated on outside suspension cable and the protecting tube that is wrapped in outside fireprotection layer.
Preferably, the fireprotection layer is selected from ceramic fibre wrapping layer, anti-guncotton wrapping layer, fire blanket wrapping layer, flameproof fabric
One of wrapping layer or a variety of composite layers.
Generally, the suspension cable includes cable body and the sheath for being coated on cable body outer layer, which is hot extruded polyethylene shield
Set.
Preferably, the protecting tube volume packet is applied not only to fixed fireprotection layer in fireprotection layer periphery, and protecting tube can rise
To the effect of fire insulation.
For the ease of the installation of protecting tube, the protecting tube uses hasp structure, and single piece type rolls, and two scrap (bridge)s are corresponding
It is shaped to outer hook portion and inner hook part, outer hook portion connects two scrap (bridge)s with the mutual hook drawing of inner hook part, completes the cladding installation of protecting tube.
Preferably, in order to avoid steam enters fireprotection layer, the top of the protecting tube is provided with waterproof cover, and suspension cable passes through
Waterproof cover, waterproof cover medial surface are embedded with opening sealing ring, and the sealing ring anchor ear that is open is external in inclined cable；The waterproof cover
Lower end is step pore structure, and the top of the fireprotection layer and protecting tube is protruded into the stepped hole without exposed.
Preferably, the waterproof cover is Ha Fushi structure, is locked by two fixture block pairings, and two fixture blocks have corresponding spiral shell
Hole passes through docking bolt locking.
Further, apart from bridge floor where built-in pipe or ground after the area of fire protection section L1 and area of fire protection section L2 combination
Vertical height be 5-50m, this altitude range can according to the factors such as drag-line applying working condition, fire risk degree by design rationally warp
Ji determines.
To the installation method of the device of suspension cable setting flameproof protection, steps are as follows
Step 1: coating fire proofing material in vitro in the corresponding suspension cable of area of fire protection section L2, fire proofing material uses adhesive tape or steel
Band wrapping is fixed, and fireprotection layer is formed；
Step 2: protecting tube volume is wrapped in the periphery of fireprotection layer；
Step 3: in area of fire protection section L1, by the outer surface sprayed fire proofing coating of built-in pipe revealed section and transitional connection pipe
Layer；
Step 4: protecting tube upper end be arranged waterproof cover, will opening sealing ring first bind round arrive inclined cable it is external, by waterproof
Two fixture block pairings of lid embrace suspension cable, and adjustment opening sealing ring makes to be embedded in the card slot of waterproof cover inner wall, adjust waterproof cover
Mounting height protrudes into the upper end of protecting tube and fireprotection layer in the stepped hole of waterproof cover, then grips block with docking bolt lock.
Compared with the prior art, the advantages of the present invention are as follows:
(1) fire prevention setting material is less, and installation is convenient, and cost is low, meets engineering actual demand；
(2) without changing the original structure and function of suspension cable, can independently installed and disassembly, it is easy to maintain；
(3) fire protection requirement matched with connection changeover portion of built-in pipe revealed section has been comprehensively considered, for the pre-buried of steel construction
By the way of sprayed fire proofing dope layer, the pe sheath inflammable for suspension cable surface is then arranged for pipe and transitional connection pipe
Fireprotection layer and protecting tube, different parts correspond to different fire prevention measures, meet engineering actual condition.
Detailed description of the invention
Fig. 1 is that the firebreak device of flameproof protection and the schematic diagram of installation method is arranged in a kind of pair of suspension cable of the present invention.
Fig. 2 is the B direction view in Fig. 1.
Fig. 3 is that the firebreak device of flameproof protection and the schematic diagram of installation method, fire prevention is arranged in a kind of pair of suspension cable of the present invention
It include top waterproof cover in device.
Fig. 4 is the partial enlarged view in Fig. 3 at I.
Fig. 5 is the nearly bridge floor of suspension cable or the structural schematic diagram on ground in the prior art.
Fig. 6 is the A direction view in Fig. 5.
In figure: Cable stress steel wire rod 1, high density polyethylene (HDPE) sheath 2, transitional connection pipe 3, built-in pipe revealed section 4, bridge
Face or ground 5, cable body section fireproof construction 6, fireproof coating layer 7, waterproof cover 8, fireprotection layer 61, protecting tube 62, protecting tube clinch
63, be open sealing ring 81, to connecting bolt 82.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1
As shown in Figs 1-4, the present embodiment is related to suspension cable being arranged the firebreak device of flameproof protection, including area of fire protection section
The fire prevention of L1 and area of fire protection section L2 are arranged, and area of fire protection section L1 includes built-in pipe revealed section 4 and transitional connection pipe 3, pre-buried
Fireproofing paint for steel structure layer 7 is arranged in the outer surface of pipe revealed section 4 and transitional connection pipe 3.Area of fire protection section L2 is pre- to be exposed to
The intermediate location of built-in pipe and suspension cable is arranged in proximal segment suspension cable more than pipe laying, transitional connection pipe 3.Area of fire protection section L2's
Fireproof construction includes the fire proofing material that suspension cable coats in vitro, forms fireprotection layer 61, protecting tube is further coated outside fireprotection layer
62, protecting tube 62 is non-ignitable metal material.
Being formed after area of fire protection section L1 and L2 combination is 5-50m from the range of bridge floor or the vertical height H on ground, preferably
For 10-30m.
Further, the fireproof material layer 61 of area of fire protection section L2 is ceramic fibre, anti-guncotton, fire blanket, flameproof fabric etc.
One layer or the composite layer that material is formed.
Two scrap (bridge) of protecting tube is corresponding to be shaped to outer hook portion and inner hook part, and outer hook portion and the mutual hook drawing of inner hook part connect two scrap (bridge)s
It connects, completes the cladding installation of protecting tube.Protecting tube 62 outside fireprotection layer 61 for volume packet mode installation, single piece type roll overlap joint and
At.
As shown in Figure 3 and Figure 4, waterproof cover 8 is set in the upper end of protecting tube 62 and fireprotection layer 61, suspension cable passes through waterproof cover
8, waterproof cover 8 uses Ha Fushi structure, is locked on suspension cable by two fixture block pairings, and two fixture blocks have corresponding screw hole, passes through
Connecting bolt 82 is locked.Waterproof cover medial surface is embedded with opening sealing ring 81, and 81 anchor ear of sealing ring that is open is in oblique pulling cable body
Outside.8 lower end of waterproof cover is step pore structure, and the top of fireprotection layer 61 and protecting tube 62 is protruded into the stepped hole without exposed.
Embodiment 2
The present embodiment is related to suspension cable being arranged the installation method of the device of flameproof protection, and operating procedure is as follows
Step 1: coating fire proofing material in vitro in the corresponding suspension cable of area of fire protection section L2, fire proofing material uses adhesive tape or steel
Band wrapping is fixed, and fireprotection layer is formed；
Step 2: protecting tube volume being wrapped in the periphery of fireprotection layer, the length of protecting tube will be slightly longer than the length of fireprotection layer；
Step 3: in area of fire protection section L1, by the outer surface sprayed fire proofing coating of built-in pipe revealed section and transitional connection pipe
Layer, this step can also first be completed before firebreak device is arranged in area of fire protection section L2；
Step 4: protecting tube upper end be arranged waterproof cover, will opening sealing ring first bind round arrive inclined cable it is external, by waterproof
Two fixture block pairings of lid embrace suspension cable, and adjustment opening sealing ring makes to be embedded in the card slot of waterproof cover inner wall, adjust waterproof cover
Mounting height protrudes into the upper end of protecting tube and fireprotection layer in the stepped hole of waterproof cover, then grips block with docking bolt lock.
Although the preferred embodiment of the present invention has been described in detail above, it is to be clearly understood that for this field
Technical staff for, the invention may be variously modified and varied.Done within the spirit and principles of the present invention
What modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. the device of a kind of pair of suspension cable setting flameproof protection, it is characterised in that: fire proof construction including area of fire protection section L1 and
The fire proof construction of area of fire protection section L2, the area of fire protection section L1 include built-in pipe revealed section (4) and transitional connection pipe (3), mistake
Cross the exposed junction that built-in pipe revealed section is arranged in connecting tube (3), the area of fire protection section L2 is be exposed to built-in pipe or more close
Section suspension cable；
Fireproof coating layer (7) are arranged in the outer surface of the built-in pipe revealed section (4) and transitional connection pipe (3)；The proximal segment oblique pull
Rope includes the fireprotection layer (61) being coated on outside suspension cable and the protecting tube (62) being wrapped in outside fireprotection layer.
2. the device according to claim 1 to suspension cable setting flameproof protection, it is characterised in that: the fireprotection layer is selected from
One of ceramic fibre wrapping layer, anti-guncotton wrapping layer, fire blanket wrapping layer, flameproof fabric wrapping layer or a variety of composite layers.
3. the device according to claim 1 to suspension cable setting flameproof protection, it is characterised in that: the suspension cable includes
Cable body (1) and the sheath (2) for being coated on cable body outer layer.
4. the device according to claim 1 to suspension cable setting flameproof protection, it is characterised in that: the protecting tube (62)
Volume packet is in fireprotection layer periphery.
5. the device according to claim 4 to suspension cable setting flameproof protection, it is characterised in that: the protecting tube two is taken
Side is corresponding to be shaped to outer hook portion and inner hook part, and outer hook portion connects two scrap (bridge)s with the mutual hook drawing of inner hook part, completes the packet of protecting tube
Cover installation.
6. the device according to claim 1 to suspension cable setting flameproof protection, it is characterised in that: the top of the protecting tube
End is provided with waterproof cover (8), and suspension cable passes through waterproof cover (8), and waterproof cover medial surface is embedded with opening sealing ring (81), and is open
Sealing ring (81) anchor ear is external in inclined cable；Waterproof cover (8) lower end be step pore structure, the fireprotection layer (61) and prevent
The top of pillar (62) is protruded into the stepped hole without exposed.
7. the device according to claim 1 to suspension cable setting flameproof protection, it is characterised in that: the waterproof cover is to breathe out
Not formula structure is locked by two fixture block pairings, and two fixture blocks have corresponding screw hole, passes through docking bolt locking.
8. the device according to claim 1 to suspension cable setting flameproof protection, it is characterised in that: the area of fire protection section
Vertical height after L1 and area of fire protection section L2 combination apart from bridge floor where built-in pipe or ground is 5-50m.
9. according to claim 1 in -8 described in any claim to the installation method of the device of suspension cable setting flameproof protection,
Be characterized in that: steps are as follows
Step 1: coating fire proofing material in vitro in the corresponding suspension cable of area of fire protection section L2, fire proofing material uses adhesive tape or steel band packet
It pricks and fixes, form fireprotection layer；
Step 2: protecting tube volume is wrapped in the periphery of fireprotection layer；
Step 3: in area of fire protection section L1, by the outer surface sprayed fire proofing dope layer of built-in pipe revealed section and transitional connection pipe；
Step 4: protecting tube upper end be arranged waterproof cover, will opening sealing ring first bind round arrive inclined cable it is external, by waterproof cover
Two fixture block pairings embrace suspension cable, and adjustment opening sealing ring makes to be embedded in the card slot of waterproof cover inner wall, adjust the installation of waterproof cover
Height protrudes into the upper end of protecting tube and fireprotection layer in the stepped hole of waterproof cover, then grips block with docking bolt lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202162.6A CN109944157A (en) | 2019-03-18 | 2019-03-18 | The device and installation method of a kind of pair of suspension cable setting flameproof protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910202162.6A CN109944157A (en) | 2019-03-18 | 2019-03-18 | The device and installation method of a kind of pair of suspension cable setting flameproof protection |
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| CN109944157A true CN109944157A (en) | 2019-06-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453601A (en) * | 2019-07-26 | 2019-11-15 | 江阴法尔胜住电新材料有限公司 | A kind of steel strand stay cable |
| CN110565522A (en) * | 2019-09-12 | 2019-12-13 | 无锡金诚工程技术服务有限公司 | Fireproof, waterproof and shockproof protection device for bridge inhaul cable |
| CN111364360A (en) * | 2020-03-31 | 2020-07-03 | 广州珠江黄埔大桥建设有限公司 | Bridge stay cable heat insulation and fire resistance graded protection structure and construction method thereof |
| CN113605233A (en) * | 2021-08-31 | 2021-11-05 | 江苏中矿大正表面工程技术有限公司 | Fireproof and antiriot bridge steel cable protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111364360A (en) * | 2020-03-31 | 2020-07-03 | 广州珠江黄埔大桥建设有限公司 | Bridge stay cable heat insulation and fire resistance graded protection structure and construction method thereof |
| CN113605233A (en) * | 2021-08-31 | 2021-11-05 | 江苏中矿大正表面工程技术有限公司 | Fireproof and antiriot bridge steel cable protection system |
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