CN113235429B - Sheath, sheath installation method and bridge cable - Google Patents
Sheath, sheath installation method and bridge cable Download PDFInfo
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- CN113235429B CN113235429B CN202110590277.4A CN202110590277A CN113235429B CN 113235429 B CN113235429 B CN 113235429B CN 202110590277 A CN202110590277 A CN 202110590277A CN 113235429 B CN113235429 B CN 113235429B
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- insulating layer
- fireproof heat
- sheath
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- 238000009434 installation Methods 0.000 title claims abstract description 9
- 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 27
- 238000007789 sealing Methods 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 21
- 239000000565 sealant Substances 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 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 3
- 239000010410 layer Substances 0.000 description 164
- 239000011241 protective layer Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000012945 sealing adhesive Substances 0.000 description 7
- 238000004873 anchoring Methods 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
- 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
- 239000003849 aromatic solvent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 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 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 face of the fireproof heat-insulating layer is fixedly connected with the side face of the metal layer, and the side face, deviating from the metal layer, of the fireproof heat-insulating 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 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 sheath provided by the invention can improve the fireproof and watertight performance of the bridge cable. The invention also provides a sheath installation method and a bridge cable.
Description
Technical Field
The invention relates to the field of bridge engineering protection, in particular to a sheath, a 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. Polysulfide sealant and a high-density polyethylene protective layer in the cable protective structure are inflammable and non-high-temperature-resistant protective layers, once a fire disaster occurs, along with the influence of factors such as strong wind in the external environment of a bridge and the like, the fire disaster range of the cable is rapidly expanded, the safe operation of the bridge of a cable system is seriously influenced, and huge economic loss and social influence are brought.
Disclosure of Invention
The invention aims to provide a sheath, a 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 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, deviating from the metal layer, of the fireproof heat-insulating layer is used for being fixedly connected with the peripheral face of the bridge cable; the body can cover the peripheral surface of the bridge cable and enables the first end to be connected with the second end to form a ring shape, at the moment, two end faces of the fireproof heat-insulating layer positioned at the first end and the second end are abutted, and two ends of the metal layer positioned at the first end and the second end are fixedly connected.
Preferably, the body has a first direction, the first direction being parallel to the axial direction of the bridge cable when the body is wrapped around 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 exceeding the fireproof heat-insulating layer along the first direction 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 greater 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 wrapping the periphery of the bridge cable, the inner side face, exceeding the fireproof heat insulation layer part, of the metal layer in the length direction 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 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 sheath;
and 2, step: wrapping the banded sheath 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 exceeding the fireproof heat-insulating layer along the first direction 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 sealant is coated on the peripheral surface of the area, used for installing the sheath, of the bridge cable, the side surface, deviating from the metal layer, of the fireproof heat-insulating layer and the staggered platform in the width direction of the metal layer and the fireproof heat-insulating layer; so that the side surface of the fireproof heat-insulating layer, which is deviated from the metal layer, is bonded with the peripheral surface of the bridge cable.
Preferably, the method also comprises the step 4: and filling fiber sealant in an annular groove formed by the sheath and the peripheral surface of the bridge cable.
The invention also provides a bridge cable, and the sheath is arranged on the peripheral surface of the bridge cable.
Compared with the prior art, the invention achieves the following technical effects:
the sheath provided by the invention comprises a banded body, wherein the banded body is convenient to curl and wrap the periphery of a bridge cable so that a first end and a second end of the body are connected to form an annular protective 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 bridge cable and an external fire source are isolated, 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 being mechanically damaged, and further prevent the bridge cable from being mechanically damaged; therefore, the 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 sheath, and the 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 sheath, wherein the 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 meanwhile, 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 a sheath provided in accordance with a first embodiment;
FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a 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-a 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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention aims to provide a sheath, a sheath mounting 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 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 sheath, please refer to fig. 1, fig. 2 and fig. 3, which includes a body 1, the body 1 is in a shape of a belt, 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, and 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 protective sleeve to play a role in protecting the bridge cable 2; 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 periphery of the bridge cable 2, the side, away from the metal layer 11, of the fireproof heat-insulating layer 12 is fixedly connected with the periphery of the bridge cable 12, the body 1 is fixed on the periphery of the bridge cable 2 in an annular shape, two end faces of the fireproof heat-insulating layer 12 of the first end and the second end are abutted, two ends of the metal layer 11 of 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 protection layer, the fixed connection of the two ends of the metal layer 11 further improves the stability of the body 1 wrapped around the periphery of the bridge cable 2, and the self resilience factor of the body 1 is prevented from being separated from being connected with the periphery of the bridge cable 2 when the body 1 is wrapped around the periphery of the bridge cable 2 in a curled manner, so that the protection of the bridge cable 2 is 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 being mechanically damaged, and further prevent the bridge cable 2 from being mechanically damaged; therefore, the sheath provided by the embodiment can well protect the bridge cable 2 and improve the fireproof performance of the bridge cable 2.
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 sheath is wound 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 fire-proof thermal insulation layer 12, one end of the metal layer 11 in the length direction is flush with one end of the fire-proof 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 fire-proof 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 sheath is wound on the bridge cable 2, one end of the metal layer 11 has enough distance to be lapped on the other end for fixing.
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-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 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-2mm; the mechanical damage to the internal structure of the body 1 and the bridge cable 2 can be avoided, so that the body 1 has a long 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 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 made of fiber sealant materials, namely when the sheath is wound on the circumferential surface of the bridge cable 2, a plurality of protective layers made of fiber sealant materials including the first sealing adhesive layer 16, the second sealing adhesive layer 17 and the sealing element in the annular groove are arranged, so that external rainwater is effectively prevented from entering the inside of the sheath and the inside of the bridge cable 2, the waterproof performance of the sheath is improved, the protection performance of the sheath on the bridge cable 2 is further improved, and the bridge cable 2 has better water-tight performance; and the first sealed adhesive linkage 16 of the sealed material of fibre, the sealed adhesive linkage 17 of second and the sealing member in the annular groove can also promote the fire proofness of sheath self, make 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 an installation method for installing the 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 sheath;
step 2: fiber sealant is smeared on the peripheral surface of the area, used for installing the 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 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, and bonding the inner side surface of the fireproof heat-insulating layer 12 on the peripheral surface of the bridge cable 2;
and 4, step 4: both ends of the sheath metal layer 11 are fixed.
Further, considering that after the sheath is rolled and fixed on the bridge cable 2, the annular groove formed by the staggered platform of the sheath and the bridge cable 2 may not be filled with the fiber sealant, which affects the sealing effect, the method further comprises the step 5: and the annular groove formed by the surrounding of the 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 has a damaged phenomenon 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 sheath can be applied to the damaged part of the original protective structure of the bridge cable 2 by the method in the embodiment, so that the damaged part of the original protective structure of the bridge cable 2 can be repaired and protected, 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 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 sheaths of the first embodiment; the sheath arranged at the anchoring position of the tower entering 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 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, can prevent the bridge cable 2 of the beam-approaching end 22 from being ignited in case of fire.
It should be noted that the sheath may also be disposed at other positions on the bridge cable 2, that is, the specific position of the 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 (8)
1. A jacket, characterized by: 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 enables the first end and the second end to be connected to form a ring, at the moment, two end faces of the fireproof heat-insulating layer (12) positioned at the first end and the second end are abutted, and two ends of the metal layer (11) positioned at the first end and the second end are fixedly connected;
the body (1) is provided with a first direction, and the first direction is parallel to the axial direction of the bridge cable (2) when the body (1) is used for being wrapped to the peripheral surface 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; both ends of the metal layer (11) in the first direction exceed both ends of the fireproof heat-insulating layer (12) in the first direction, and the metal layer (11) in the first direction exceeds both ends of the fireproof heat-insulating layer (12) and both ends of the fireproof heat-insulating layer (12) in the first direction form two staggered platforms;
when the body (1) is used for wrapping the peripheral surface of the bridge cable (2), two staggered platforms and the peripheral surface of the bridge cable (2) form two annular grooves; a sealing element used for sealing the corresponding annular groove is arranged in each annular groove, and the sealing element is made of waterproof and fireproof materials;
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 on 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 (15) screwed into the first bolt hole (13) and the second bolt hole (14) is used for fixing;
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).
2. The sheath of claim 1, wherein: the metal layer (11) is made of a stainless steel plate or an aluminum plate.
3. The sheath of claim 1, wherein: the seal is formed of a fibrous sealant filling the annular groove.
4. The sheath of claim 1, wherein: the fireproof heat-insulating layer (12) is made of a fiber fireproof felt.
5. A method of installing a protective cover according to any one of claims 1 to 4, wherein: 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 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).
6. A method of installing a protective cover according to claim 5, wherein:
the body (1) is provided with a first direction, and the first direction is parallel to the axial direction of the bridge cable (2) when the body (1) is used for being wrapped to the peripheral surface 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) along the first direction exceed two ends of the fireproof heat-insulating layer (12) along the first direction, and two staggered platforms are formed by the two ends of the metal layer (11) exceeding the two ends of the fireproof heat-insulating layer (12) along the first direction and the two ends of the fireproof heat-insulating layer (12) along the first direction; when the body (1) is used for wrapping the peripheral surface of the bridge cable (2), two staggered platforms and the peripheral surface of the bridge cable (2) form two annular grooves;
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 region of the sheath, the fireproof heat-insulating layer (12) deviates from the side face of the metal layer (11) and the slab staggering part are coated with fiber sealant, so that the fireproof heat-insulating layer (12) deviates from the side face of the metal layer (11) and the peripheral face of the bridge cable (2) are bonded.
7. A method of installing a casing as claimed in claim 6, wherein: further comprising the step 4: and fiber sealant is filled in the annular groove formed by the surrounding of the sheath and the peripheral surface of the bridge cable (2).
8. A bridge cable, characterized by: the bridge cable (2) is provided with a sheath according to any one of claims 1 to 4 on its circumferential surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590277.4A CN113235429B (en) | 2021-05-28 | 2021-05-28 | Sheath, sheath installation method and bridge cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110590277.4A CN113235429B (en) | 2021-05-28 | 2021-05-28 | Sheath, sheath installation method and bridge cable |
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| Publication Number | Publication Date |
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| CN113235429A CN113235429A (en) | 2021-08-10 |
| CN113235429B true CN113235429B (en) | 2023-01-06 |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2897623B1 (en) * | 2006-02-17 | 2008-04-11 | Eiffage Tp Sa | DEVICE FOR PROTECTING THE FIRE OF A CABLE OR THE LIKE OF ART OR CIVIL ENGINEERING |
| CN101709569A (en) * | 2009-11-06 | 2010-05-19 | 中国航空工业集团公司北京航空材料研究院 | Bridge sling wire sealing protection structure and protection method |
| CN104164836A (en) * | 2014-08-11 | 2014-11-26 | 王双其 | Protection method for stainless steel combined casing pipe for bridge cable |
| CN204551262U (en) * | 2015-03-03 | 2015-08-12 | 江苏法尔胜缆索有限公司 | Bridge cable sheath |
| CN208219411U (en) * | 2018-03-30 | 2018-12-11 | 江苏卓奇新材料科技有限公司 | Bridge cable sealing protection composite coating structure |
| CN209722740U (en) * | 2019-01-28 | 2019-12-03 | 广州珠江黄埔大桥建设有限公司 | Flame retardant type bridge stay cable |
| CN211312163U (en) * | 2019-08-07 | 2020-08-21 | 柳州欧维姆机械股份有限公司 | Fireproof and explosion-proof inhaul cable |
| CN211973119U (en) * | 2019-12-12 | 2020-11-20 | 江苏法尔胜缆索有限公司 | Anti-fire repairable cable for cable-stayed bridge |
| CN212611973U (en) * | 2020-06-03 | 2021-02-26 | 江苏天龙玄武岩连续纤维股份有限公司 | Fire-resistant stay cable |
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- 2021-05-28 CN CN202110590277.4A patent/CN113235429B/en active Active
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