CN113235429A - Novel sheath, novel sheath installation method and bridge cable - Google Patents
Novel sheath, novel sheath installation method and bridge cable Download PDFInfo
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- CN113235429A CN113235429A CN202110590277.4A CN202110590277A CN113235429A CN 113235429 A CN113235429 A CN 113235429A CN 202110590277 A CN202110590277 A CN 202110590277A CN 113235429 A CN113235429 A CN 113235429A
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- 238000009434 installation Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 107
- 239000002184 metal Substances 0.000 claims abstract description 107
- 230000002093 peripheral effect Effects 0.000 claims abstract description 37
- 239000000835 fiber Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 25
- 238000009413 insulation Methods 0.000 claims description 23
- 239000000565 sealant Substances 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 162
- 239000011241 protective layer Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000012945 sealing adhesive Substances 0.000 description 7
- 238000004873 anchoring Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 3
- 239000004587 polysulfide sealant Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- PPQREHKVAOVYBT-UHFFFAOYSA-H dialuminum;tricarbonate Chemical compound [Al+3].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O.[O-]C([O-])=O PPQREHKVAOVYBT-UHFFFAOYSA-H 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000012812 sealant material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229940118662 aluminum carbonate Drugs 0.000 description 1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to the field of bridge engineering protection, in particular to a novel sheath, which comprises a body, wherein the body is in a belt shape and is provided with a first end and a second end; the body comprises a metal layer and a fireproof heat-insulating layer which are arranged in sequence; one side of the fireproof heat-insulating layer is fixedly connected with the side of the metal layer, and the side of the fireproof heat-insulating layer, which deviates from the metal layer, is fixedly connected with the peripheral surface of the bridge cable; the body can cover and establish to bridge cable global and make first end and second end meet and form the annular, and at this moment, the both ends face looks butt of the fire prevention heat insulating layer that is located first end and second end, the both ends fixed connection of the metal level that is located first end and second end. The novel sheath provided by the invention can improve the fireproof and watertight performance of the bridge cable. The invention also provides a mounting method of the novel sheath and a bridge cable.
Description
Technical Field
The invention relates to the field of bridge engineering protection, in particular to a novel sheath, a novel sheath installation method and a bridge cable.
Background
Nowadays, the bridge construction speed is rapid, and a plurality of river-crossing, river-crossing and sea-crossing cable system bridges, such as a cable-stayed bridge, a suspension bridge and the like, are built in succession; wherein the cable of cable-stay bridge is the suspension cable, and the cable of suspension bridge includes: a main cable and a sling. At present, the outer surface of a stay cable is generally a high density polyethylene protective layer, namely an HDPE layer, the protective layer of a main cable is generally a polysulfide sealant or a hot-melt wrapping tape, and the protective layer of the stay cable is generally a high density polyethylene protective layer or a polysulfide sealant. The polysulfide sealant and the high-density polyethylene protective layer in the cable protective structure are flammable and non-high temperature resistant protective layers, once a fire disaster occurs, along with the influence of factors such as strong wind of the external environment of the bridge and the like, the fire disaster range of the cable is rapidly expanded, the safe operation of the cable system bridge is seriously influenced, and huge economic loss and social influence are brought.
Disclosure of Invention
The invention aims to provide a novel sheath, a novel sheath installation method and a bridge cable, which are used for solving the problems in the prior art and improving the fireproof and watertight performance of the bridge cable.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a novel sheath; comprises a body, wherein the body is in a belt shape and is provided with a first end and a second end; the body comprises a metal layer and a fireproof heat-insulating layer which are arranged in sequence; one side face of the fireproof heat-insulating layer is fixedly connected with the side face of the metal layer, and the side face of the fireproof heat-insulating layer, which deviates from the metal layer, is fixedly connected with the peripheral face of the bridge cable; the body can cover and establish to bridge cable global and make first end with the second end meets and forms the annular, and at this moment, be located first end with the second end the both ends face looks butt of the fire prevention heat insulating layer, be located first end with the second end the both ends fixed connection of metal level.
Preferably, the body has a first direction, and when the body is used for being wrapped to the periphery of the bridge cable, the first direction is parallel to the axial direction of the bridge cable; the size of the metal layer along the first direction is larger than that of the fireproof heat-insulating layer along the first direction; two ends of the metal layer along the first direction exceed two ends of the fireproof heat-insulating layer along the first direction, and two staggered platforms are formed by the two ends of the metal layer along the first direction exceeding the two ends of the fireproof heat-insulating layer and the two ends of the fireproof heat-insulating layer along the first direction; when the body is used for being wrapped on the periphery of the bridge cable, two staggered platforms and the periphery of the bridge cable form two annular grooves; and sealing pieces used for sealing the annular grooves are arranged in the two annular grooves.
Preferably, the first direction is the width direction of the body, the length direction of the metal layer is larger than the length direction of the fireproof heat-insulating layer, one end of the metal layer in the length direction is flush with one end of the fireproof heat-insulating layer in the length direction, and the other end of the metal layer in the length direction exceeds the other end of the fireproof heat-insulating layer in the length direction; a first bolt hole is formed in one end, which is flush with the fireproof heat insulation layer, of the metal layer, and a second bolt hole is formed in the part, which exceeds the fireproof heat insulation layer, of the metal layer in the length direction; when the body is used for being wrapped around the bridge cable, the inner side face, exceeding the fireproof heat insulation layer part in the length direction, of the metal layer is attached to the outer side face of the other end of the metal layer in the length direction, so that the first bolt hole is opposite to the second bolt hole, and the first bolt hole and the second bolt hole are fixed through bolts screwed in the first bolt hole and the second bolt hole.
Preferably, the metal layer is made of stainless steel plate or aluminum plate.
Preferably, the side surface of the fireproof heat-insulating layer close to the metal layer is bonded with the side surface of the metal layer through fiber sealant to form a first sealing bonding layer; the side face, deviating from the metal layer, of the fireproof heat-insulating layer is used for being bonded with the peripheral face of the bridge cable through fiber sealant to form a second sealing bonding layer; the sealing element is formed by a fiber sealant filling the annular groove.
Preferably, the fireproof heat-insulating layer is made of a fireproof fiber felt.
The invention also provides an installation method of the novel sheath for the bridge cable, which comprises the following steps: the method comprises the following steps:
step 1: cleaning the peripheral surface of the area of the bridge cable for installing the novel sheath;
step 2: the novel banded sheath is wrapped on the peripheral surface of the bridge cable, so that two ends of the fireproof heat-insulating layer are abutted, and the inner side surface of the fireproof heat-insulating layer is adhered to the peripheral surface of the bridge cable;
and step 3: and fixing two ends of the metal layer.
Preferably, the body has a first direction, and when the body is used for being wrapped to the periphery of the bridge cable, the first direction is parallel to the axial direction of the bridge cable; the size of the metal layer along the first direction is larger than that of the fireproof heat-insulation layer along the first direction; two ends of the metal layer along the first direction exceed two ends of the fireproof heat-insulating layer along the first direction, and two staggered platforms are formed by the two ends of the metal layer along the first direction exceeding the two ends of the fireproof heat-insulating layer and the two ends of the fireproof heat-insulating layer along the first direction; when the body is used for being wrapped on the periphery of the bridge cable, two staggered platforms and the periphery of the bridge cable form two annular grooves; the method also comprises an intermediate step between the step 1 and the step 2: fiber sealing glue is smeared on the circumferential surface of the area of the bridge cable for installing the novel sheath, the side surface of the fireproof heat-insulating layer, which is deviated from the metal layer, and the staggered platform of the metal layer and the fireproof heat-insulating layer in the width direction; so that the side surface of the fireproof heat-insulating layer, which is far away from the metal layer, is bonded with the peripheral surface of the bridge cable.
Preferably, the method further comprises the step 4: and the novel sheath and the annular groove formed by surrounding the peripheral surface of the bridge cable are filled with fiber sealant.
The invention also provides a bridge cable, and the novel sheath is arranged on the peripheral surface of the bridge cable.
Compared with the prior art, the invention has the following technical effects:
the novel sheath provided by the invention comprises a belt-shaped body, wherein the belt-shaped body is convenient to curl and is wrapped on the peripheral surface of a bridge cable so that the first end and the second end of the body are connected to form an annular sheath to play a role in protecting the bridge cable; the outer layer of the body is a metal layer, the inner layer is a fireproof heat-insulating layer, the metal layer and the fireproof heat-insulating layer are fixedly connected, when the body is wrapped on the periphery of the bridge cable, the side face, away from the metal layer, of the fireproof heat-insulating layer is fixedly connected with the periphery of the bridge cable, the body is fixed on the periphery of the bridge cable in an annular mode, two end faces of the fireproof heat-insulating layer at the first end and the second end are abutted, two ends of the metal layer at the first end and the second end are fixedly connected, the metal layer and the fireproof heat-insulating layer form a complete closed-loop protective layer, and the two ends of the metal layer are fixedly connected to further improve the stability of the body wrapped on the periphery of the bridge cable, so that the self resilience factor of the body when the body is wrapped on the periphery of the bridge cable in a curling mode is prevented from being separated from being connected with the periphery of the bridge cable, and the protection of the bridge cable is influenced; the metal layer is made of metal materials, so that the metal layer can not burn, the effect of isolating the bridge cable from an external fire source is achieved, and the fireproof heat-insulating layer can delay external heat to be transferred to the bridge cable, so that the fireproof effect is further achieved; the metal layer can also prevent the body from mechanical damage, and further prevent the bridge cable from mechanical damage; therefore, the novel sheath provided by the invention can well protect the bridge cable and can improve the fireproof performance of the bridge cable.
The invention also provides an installation method of the novel sheath, and the novel sheath is installed on the bridge cable to improve the fireproof and watertight performance of the bridge cable.
The invention also provides a bridge cable, which comprises the novel sheath, wherein the novel sheath plays a role in protecting the bridge cable from fire and water, so that the bridge cable is not easy to have a fire disaster, and rainwater leakage is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front view of the novel sheath provided in accordance with one embodiment;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the novel sheath and bridge cable combination provided in accordance with one embodiment;
fig. 4 is a schematic structural diagram of a bridge cable provided in the third embodiment.
Icon: 1-body; 11-a metal layer; 12-fireproof thermal insulation layer; 13-first bolt hole; 14-a second bolt hole; 15-bolt; 16-a first sealing adhesive layer; 17-a second sealing adhesive layer; 2-bridge cable; 21-near the tower end; 22-proximal beam end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a novel sheath, a mounting method of the novel sheath and a bridge cable, which are used for solving the problems in the prior art and improving the fireproof and watertight performance of the bridge cable.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
The present embodiment provides a novel sheath, please refer to fig. 1, fig. 2 and fig. 3, which includes a body 1, the body 1 is in a band shape, the body 1 has a first end and a second end; the body 1 comprises a metal layer 11 and a fireproof heat-insulating layer 12 which are arranged in sequence; one side of the fireproof heat-insulating layer 12 is fixedly connected with the side of the metal layer 11, and the side of the fireproof heat-insulating layer 12, which is far away from the metal layer 11, is fixedly connected with the peripheral surface of the bridge cable 2; the body 1 can cover the peripheral surface of the bridge cable 2 and make the first end and the second end connected to form a ring, at the moment, the two end faces of the fireproof heat-insulating layer 12 positioned at the first end and the second end are abutted, and the two ends of the metal layer 11 positioned at the first end and the second end are fixedly connected.
The belt-shaped body 1 is convenient to curl and is wrapped on the peripheral surface of the bridge cable 2, so that the first end and the second end of the body 1 are connected to form an annular novel protecting sheath to play a role in protecting the bridge cable 2; wherein the outer layer of the body 1 is a metal layer 11, the inner layer is a fireproof heat-insulating layer 12, the metal layer 11 and the fireproof heat-insulating layer 12 are fixedly connected, when the body 1 is wrapped around the bridge cable 2, the side of the fireproof heat-insulating layer 12 departing from the metal layer 11 is fixedly connected with the peripheral surface of the bridge cable 12, so that the body 1 is fixed on the peripheral surface of the bridge cable 2 in an annular shape, and at this time, the two end surfaces of the fireproof heat-insulating layer 12 at the first end and the second end are abutted, the two ends of the metal layer 11 at the first end and the second end are fixedly connected, the metal layer 11 and the fireproof heat-insulating layer 12 both form a complete closed-loop protective layer, the two ends of the metal layer 11 are fixedly connected to further improve the stability of the body 1 wrapped on the peripheral surface of the bridge cable 2, so that the body 1 is prevented from being separated from the connection with the peripheral surface of the bridge cable 2 due to the self resilience factor when being wrapped on the peripheral surface of the bridge cable 2 in a curling manner, and the protection of the bridge cable 2 is prevented from being influenced; the metal layer 11 is made of metal materials, so that the metal layer cannot burn and can be explosion-proof, the bridge cable 2 and an external fire source are isolated, and the fireproof heat-insulating layer 12 can delay external heat from being transferred to the bridge cable and further has a fireproof effect; the metal layer 11 can also prevent the body 1 from mechanical damage, and further prevent the bridge cable 2 from mechanical damage; therefore, the novel sheath that this embodiment provided, the fine protection to bridge cable 2 that plays of ability can promote bridge cable 2's fire behavior.
In the alternative of this embodiment, preferably, please refer to fig. 3 and fig. 4, the body has a first direction, and when the body 1 is used for being wrapped around the bridge cable 2, the first direction of the body 1 is parallel to the axial direction of the bridge cable 2, that is, the size of the body 1 in the first direction is the protection length of the body 1 on the circumferential surface of the bridge cable 2; referring to fig. 2, the size of the metal layer 11 in the first direction is larger than the size of the fire-proof thermal insulation layer 12 in the first direction; two ends of the metal layer 11 in the first direction exceed two ends of the fireproof heat-insulating layer 12 in the first direction, two staggered platforms are formed by the two ends of the metal layer 11 in the first direction exceeding the two ends of the fireproof heat-insulating layer 12 and the two ends of the fireproof heat-insulating layer 12 in the first direction, when the body 1 is used for being wrapped to the periphery of the bridge cable 2, two annular grooves are formed by the two staggered platforms and the periphery of the bridge cable 2, sealing elements used for sealing the annular grooves are arranged in the two annular grooves, or a sealing element is arranged in the annular groove at one end according to actual requirements; preferably, the sealing member adopts fire-proof waterproof material, makes the sealing member in the annular groove can play further fire-proof effect to 12 tip on the fire prevention heat insulating layer in the annular groove, and the sealing member can also play waterproof effect simultaneously, when preventing that body 1 from being used for on the bridge cable 2, the seepage phenomenon takes place at the both ends of 1 first direction of body.
Specifically, the two ends of the metal layer 11 along the first direction respectively exceed the two ends of the fireproof thermal insulation layer 12 by 5-10 mm, so that when the novel sheath is rolled on the bridge cable 2, the annular groove can have a certain depth, and an effective waterproof sealing effect can be achieved when the sealing element is filled.
In the alternative of this embodiment, preferably, please refer to fig. 2, the first direction is a width direction of the body 1, that is, a width dimension of the body 1 is a protection length dimension of the body 1 on the circumferential surface of the bridge cable 2; in this case, the length of the metal layer 11 is greater than the length of the fireproof thermal insulation layer 12, one end of the metal layer 11 in the length direction is flush with one end of the fireproof thermal insulation layer 12 in the length direction, and the other end of the metal layer 11 in the length direction exceeds the other end of the fireproof thermal insulation layer 12 in the length direction; a first bolt hole 13 is formed in one end, which is flush with the fireproof heat insulation layer 12, of the metal layer 11, and a second bolt hole 14 is formed in the part, which exceeds the fireproof heat insulation layer 12, of the metal layer 11 in the length direction; referring to fig. 3, when the body 1 is wrapped around the bridge cable 2, the inner side surface of the metal layer 11, which exceeds the fireproof and heat-insulating layer 12 in the length direction, is attached to the outer side surface of the other end of the metal layer 11 in the length direction, so that the first bolt hole 13 and the second bolt hole 14 are opposite to each other, and the bolt 15 screwed into the first bolt hole 13 and the second bolt hole 14 is used for fixing, so that the state of the body 1 is maintained, and the body 1 is prevented from being separated from the connection state with the bridge cable 2 due to the resilience force generated by the curling of the body 1.
Specifically, the length direction of the metal layer 11 exceeds one end of the fireproof thermal insulation layer 12 by 10mm-20mm, so that when the novel sheath is coiled on the bridge cable 2, one end of the metal layer 11 has enough distance to be lapped and fixed on the other end.
In addition, the first direction can also be the length direction of the body 1, namely the length dimension of the body 1 is the protection length dimension of the body 1 on the peripheral surface of the bridge cable 2; in this case (not shown in the figure), the width of the metal layer 11 is greater than the width of the fireproof thermal insulation layer 12, one end of the metal layer 11 in the width direction is flush with one end of the fireproof thermal insulation layer 12 in the width direction, and the other end of the metal layer 11 in the width direction exceeds the other end of the fireproof thermal insulation layer 12 in the width direction; a first bolt hole 13 is formed in one end, which is flush with the fireproof heat insulation layer 12, of the metal layer 11, and a second bolt hole 14 is formed in the part, which exceeds the fireproof heat insulation layer 12, of the metal layer 11 in the width direction; when body 1 is used for wrapping up in and establishes 2 peripheries of bridge cable, the medial surface that metal level 11 width direction surpasss fire prevention heat-insulating layer 12 part pastes on the other end lateral surface of metal level 11 width direction for first bolt hole 13 and second bolt hole 14 are relative, and fix through the bolt 15 of the first bolt hole 13 of twist and second bolt hole 14, maintain the state of body 1, prevent to make body 1 break away from the connected state with bridge cable 2 because of the resilience force that body 1 curls and produces.
In the alternative of this embodiment, it is preferable that the metal layer 11 is made of a stainless steel plate or an aluminum plate; wherein the thickness of the metal layer 1 can be set to 0.5mm-2 mm; the internal structure of the body 1 and the bridge cable 2 can be prevented from being mechanically damaged, so that the body 1 has a good service life; the material of the metal layer 11 may also be other metal materials according to the use environment, and the specific thickness may be determined according to the specific metal material.
Further, the waterproof problem of the bridge cable 2 is also more prominent at present; in an alternative of this embodiment, it is preferable that the side of the fire-proof thermal insulation layer 12 close to the metal layer 11 is bonded to the side of the metal layer 11 by a fiber sealant, please refer to fig. 2 and 3, which is equivalent to a first sealing adhesive layer 16 is further disposed between the metal layer 11 and the fire-proof thermal insulation layer 12; when the novel sheath is wound on the peripheral surface of the bridge cable 2, the side surface of the fireproof heat-insulating layer 12, which is far away from the metal layer 11, is bonded with the peripheral surface of the bridge cable 2 through a fiber sealant, please refer to fig. 3, which is equivalent to a second sealing bonding layer 17 arranged between the fireproof heat-insulating layer 12 and the bridge cable 2; and the sealing element is formed by a fiber sealant which is filled in the annular groove; the first sealing adhesive layer 16, the second sealing adhesive layer 17 and the sealing element are all made of fiber sealant materials, namely when the novel sheath is wound on the peripheral surface of the bridge cable 2, a plurality of protective layers made of fiber sealant materials are arranged in the first sealing adhesive layer 16, the second sealing adhesive layer 17 and the sealing element in the annular groove, so that external rainwater is effectively prevented from entering the inside of the novel sheath and the inside of the bridge cable 2, the waterproof performance of the novel sheath is improved, the protection performance of the novel sheath on the bridge cable 2 is further improved, and the bridge cable 2 has better water-tight performance; and the sealed sealing member in 16, the sealed adhesive linkage 17 of the sealed adhesive linkage of second of the sealed material of fibre and the annular groove can also promote the fire proofness of novel sheath self, makes bridge cable 2 have better fire proofness.
The fiber sealant is a sealant with fire-resistant and flame-retardant properties, and the adhesion of the fiber sealant and the metal layer 11 is more than 4KN/m, the flame-retardant grade is V-0 grade, and the fire-retardant grade is A3 grade; the bonding performance of the specific fiber sealant is specifically determined according to the use environment.
In the alternative of this embodiment, it is preferable that the fireproof thermal insulation layer 12 is made of a fireproof fiber felt, such as: basalt fiber fireproof felt or aluminum carbonate fiber fireproof felt and the like; the heat conductivity coefficient of the fiber fireproof felt is less than 0.1 (W/(m.K), 540 ℃), the material thickness is set to be 3.0mm-8.0mm, and the selection and the specific thickness of the fiber fireproof felt can be specifically determined according to the actual use environment.
Example two
The embodiment provides a method for installing the novel sheath in the first embodiment on the bridge cable 2; the method specifically comprises the following steps:
step 1: cleaning the peripheral surface of the area of the bridge cable 2 for installing the novel sheath;
step 2: fiber sealant is smeared on the circumferential surface of the area, used for installing the novel sheath, of the bridge cable 2, the side surface, deviating from the metal layer 11, of the fireproof heat-insulating layer 12 and the staggered platform in the first direction of the metal layer 11 and the fireproof heat-insulating layer 12;
and step 3: wrapping the novel banded sheath on the circumferential surface of the bridge cable 2 to enable two ends of the fireproof heat-insulating layer 12 to be abutted, and bonding the inner side surface of the fireproof heat-insulating layer 12 on the circumferential surface of the bridge cable 2;
and 4, step 4: and fixing two ends of the novel sheath metal layer 11.
Further, after the novel sheath is rolled and fixed on the bridge cable 2, the annular groove formed by the staggered platform of the novel sheath and the bridge cable 2 is possibly not filled with fiber sealant, so that the sealing effect is influenced, and the method further comprises the following steps of 5: the annular groove formed by the novel sheath and the peripheral surface of the bridge cable 2 is filled with fiber sealant.
In the step 1, aromatic solvent oil or xylene can be used for cleaning the circumferential surface of the bridge cable, so that oil stains and impurities can be effectively cleaned.
Further, if the original protective structure of the bridge cable 2 is damaged and the problem of water leakage at the damaged part is serious, the risk is higher if hot melt material is adopted for plugging; therefore, the novel sheath can be applied to the damaged part of the original protection structure of the bridge cable 2 by the method in the embodiment, the repair protection of the damaged part of the original protection structure of the bridge cable 2 is realized, and meanwhile, the fireproof and watertight performance of the bridge cable 2 is improved.
EXAMPLE III
The embodiment provides a bridge cable 2, wherein the bridge cable 2 is provided with a novel sheath in the first embodiment; referring to fig. 3, the anchoring position of the tower-proximal end 21 and the anchoring position of the beam-proximal end 22 of the bridge cable 2 are provided with the novel sheaths of the first embodiment; the novel sheath arranged at the anchoring position of the tower inlet end 21 can prevent the ignited bridge cable 2 from spreading to the upper part to play a role of a fireproof isolation belt; the novel sheath arranged at the anchoring position of the beam-approaching end 22 can prevent external rainwater from flowing into the anchoring section of the beam-approaching end 22 through the cable body to influence the service life of the bridge cable 2, and meanwhile, the bridge cable 2 of the beam-approaching end 22 can be prevented from being ignited in case of fire.
It should be noted that the novel sheath may also be disposed at other positions on the bridge cable 2, that is, the specific position of the novel sheath on the bridge cable 2 may be specifically determined according to the structure of the bridge cable 2 and the actual use condition thereof.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A novel sheath is characterized in that: the device comprises a body (1), wherein the body (1) is in a belt shape, and the body (1) is provided with a first end and a second end; the body (1) comprises a metal layer (11) and a fireproof heat-insulating layer (12) which are arranged in sequence; one side surface of the fireproof heat-insulating layer (12) is fixedly connected with the side surface of the metal layer (11), and the side surface of the fireproof heat-insulating layer (12) departing from the metal layer (11) is fixedly connected with the peripheral surface of the bridge cable (2); the body (1) can cover the peripheral surface of the bridge cable (2) and enable the first end to be connected with the second end to form a ring, at the moment, two end faces of the fireproof heat-insulating layer (12) located at the first end and the second end are abutted, and two ends of the metal layer (11) located at the first end and the second end are fixedly connected.
2. The novel sheath of claim 1, wherein: the body (1) is provided with a first direction, and when the body (1) is used for being wrapped to the periphery of the bridge cable (2), the first direction is parallel to the axial direction of the bridge cable (2);
the size of the metal layer (11) along the first direction is larger than that of the fireproof thermal insulation layer (12) along the first direction; two ends of the metal layer (11) in the first direction exceed two ends of the fireproof heat-insulating layer (12) in the first direction, and two staggered platforms are formed by the two ends of the metal layer (11) in the first direction exceeding the two ends of the fireproof heat-insulating layer (12) and the two ends of the fireproof heat-insulating layer (12) in the first direction;
when the body (1) is used for being wrapped to the peripheral surface of the bridge cable (2), two staggered platforms and the peripheral surface of the bridge cable (2) form two annular grooves in a surrounding mode; and a sealing piece used for sealing the corresponding annular groove is arranged in each annular groove.
3. The novel sheath of claim 2, wherein: the first direction is the width direction of the body (1); the size of the metal layer (11) in the length direction is larger than that of the fireproof heat-insulating layer (12), one end of the metal layer (11) in the length direction is flush with one end of the fireproof heat-insulating layer (12) in the length direction, and the other end of the metal layer (11) in the length direction exceeds the other end of the fireproof heat-insulating layer (12) in the length direction; a first bolt hole (13) is formed in one end, which is flush with the fireproof heat-insulating layer (12), of the metal layer (11), and a second bolt hole (14) is formed in the part, which exceeds the fireproof heat-insulating layer (12), of the metal layer (11) in the length direction;
when the body (1) is used for being wrapped around the periphery of the bridge cable (2), the inner side surface of the metal layer (11) exceeding the fireproof heat-insulating layer (12) in the length direction is attached to the outer side surface of the other end of the metal layer (11) in the length direction, so that the first bolt hole (13) is opposite to the second bolt hole (14), and the bolt is fixed through a bolt (15) screwed into the first bolt hole (13) and the second bolt hole (14).
4. The novel sheath of claim 1, wherein: the metal layer (11) is made of a stainless steel plate or an aluminum plate.
5. The novel sheath of claim 2, wherein: the side face, close to the metal layer (11), of the fireproof heat-insulating layer (12) is bonded with the side face of the metal layer (11) through fiber sealant to form a first sealing bonding layer (16); the side face, deviating from the metal layer (11), of the fireproof heat-insulating layer (12) is used for being bonded with the peripheral face of the bridge cable (2) through fiber sealant to form a second sealing bonding layer (17); the sealing element is formed by a fiber sealant filling the annular groove.
6. The novel sheath of claim 1, wherein: the fireproof heat-insulating layer (12) is made of a fiber fireproof felt.
7. A method of installing a new jacket according to any one of claims 1 to 6, characterised in that: the installation method comprises the following steps:
step 1: cleaning the peripheral surface of the area of the bridge cable (2) for installing the sheath;
step 2: wrapping the novel banded sheath on the peripheral surface of the bridge cable (2) to enable two ends of the fireproof heat-insulating layer (12) to be abutted against each other, wherein the inner side surface of the fireproof heat-insulating layer (12) is fixed on the peripheral surface of the bridge cable (2);
and step 3: and fixing two ends of the metal layer (11).
8. The mounting method according to claim 7, wherein:
the body (1) is provided with a first direction, and when the body (1) is used for being wrapped to the periphery of the bridge cable (2), the first direction is parallel to the axial direction of the bridge cable (2);
the size of the metal layer (11) along the first direction is larger than that of the fireproof thermal insulation layer (12) along the first direction; two ends of the metal layer (11) in the first direction exceed two ends of the fireproof heat-insulating layer (12) in the first direction, and two staggered platforms are formed by the two ends of the metal layer (11) in the first direction exceeding the two ends of the fireproof heat-insulating layer (12) and the two ends of the fireproof heat-insulating layer (12) in the first direction; when the body (1) is used for being wrapped to the peripheral surface of the bridge cable (2), two staggered platforms and the peripheral surface of the bridge cable (2) form two annular grooves in a surrounding mode;
an intermediate step is further included between step 1 and step 2: the bridge cable (2) is used for installing the peripheral face of the area of the novel sheath, the fireproof heat-insulating layer (12) deviates from the side face of the metal layer (11) and the staggered platform position are coated with fiber sealant, so that the side face of the fireproof heat-insulating layer (12) deviating from the metal layer (11) is bonded with the peripheral face of the bridge cable (2).
9. The method of installation according to claim 8, wherein: further comprising the step 4: the novel sheath and the peripheral face of the bridge cable (2) are enclosed to form the annular groove which is filled with fiber sealant.
10. A bridge cable, characterized in that: the bridge cable (2) is provided with a novel sheath according to any one of claims 1 to 6 on its circumferential surface.
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