WO2023024468A1 - 一种易于现场施工的桥梁斜拉索防火防护体系及施工方法 - Google Patents

一种易于现场施工的桥梁斜拉索防火防护体系及施工方法 Download PDF

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Publication number
WO2023024468A1
WO2023024468A1 PCT/CN2022/078202 CN2022078202W WO2023024468A1 WO 2023024468 A1 WO2023024468 A1 WO 2023024468A1 CN 2022078202 W CN2022078202 W CN 2022078202W WO 2023024468 A1 WO2023024468 A1 WO 2023024468A1
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WIPO (PCT)
Prior art keywords
layer
fixed
stay cable
sealing
basalt
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PCT/CN2022/078202
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English (en)
French (fr)
Inventor
倪雅
康壮苏
张兵
闵亮
Original Assignee
江苏中矿大正表面工程技术有限公司
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Publication of WO2023024468A1 publication Critical patent/WO2023024468A1/zh

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed bridges
    • E01D11/04—Cable-stayed bridges
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

Definitions

  • the invention relates to the technical field of cable-stayed bridge fire prevention and fire protection, and more specifically relates to a bridge cable-stayed cable fire protection system and a construction method that are easy to be constructed on site.
  • the present invention provides a bridge stay cable fire protection system that is easy to construct on site, aiming to solve the above technical problems.
  • a bridge stay cable fire protection system that is easy to be constructed on site, comprising a stay cable, and an HDPE protective cover wrapped on the outside of the stay cable; also includes:
  • the fireproof layer is a basalt fiber cloth strip spirally wound on the outside of the HDPE protective sheath;
  • the sealing layer includes a multi-section sealing sleeve set outside the fireproof layer; the sealing sleeve is composed of multi-layer basalt grid cloth bonding; the multi-layer sealing sleeve of each sealing sleeve
  • the size of the basalt mesh cloth is the same, and the edges on both sides and the upper and lower edges are arranged in stepped staggered layers; the basalt mesh cloth in the innermost layer of each sealing sleeve is bonded and fixed to the fireproof layer,
  • the basalt grid cloth corresponding to the two side edges of each sealing sleeve is butted, and the stepped staggered layers are bonded and fixed; the basalt mesh corresponding to the upper and lower edges of the two adjacent sealing sleeves
  • the grid cloth is butted, and the stepped staggered layers are bonded and fixed.
  • the present invention sequentially wraps the fireproof layer and the sealing layer made of basalt fiber on the outside of the stay cable with the HDPE protective sheath, which can effectively isolate the external flame temperature and prevent the stay cable from being damaged at high temperature; the seal layer of the present invention
  • the prefabricated assembly structure is convenient for rapid installation and molding on site, shortens the construction period, and is easy to replace after damage. Due to the staggered arrangement of each layer of basalt mesh cloth in the sealing sleeve, the stability of the installation bond is stronger. The problem of poor on-site construction stability of the prefabricated assembly structure is overcome.
  • each layer of basalt mesh cloth is sequentially bonded by B-FRS flame-retardant silica gel, and the innermost layer of basalt mesh cloth is also bonded by B-FRS flame-retardant silica gel and fireproof layer. bonding.
  • the staggered arrangement not only improves the structural stability of the bonding, but also has a good sealing effect.
  • the outer side of the sealing layer is coated with a weather-resistant topcoat. It can play the role of moisture-proof and damage-proof on the surface.
  • the two ends of the basalt fiber cloth strips are bonded and fixed to the outside of the HDPE protective sheath.
  • the structural stability can be further improved.
  • the present invention also provides a construction method for a bridge stay cable fire protection system that is easy to construct on site, comprising the following steps:
  • the construction method provided by the present invention can quickly construct the sealing layer, and by setting the split sealing sleeve layer by layer, it can not only improve the structural stability and sealing effect, but also speed up the construction progress, and the construction efficiency is high.
  • the effect is good, and the problem of poor consistency of traditional on-site construction is overcome by means of prefabricated assembly.
  • the joint of the two sealing sleeves and/or the sealing sleeve is fastened with a hoop; when the sealing layer is bonded and solidified, the hoop is removed.
  • the hoop can be used for bonding and fixing. After the bonding is solidified, the hoop can be removed.
  • the method is simple and reliable, and can improve the bonding effect.
  • the sealing layer is coated with a weather-resistant topcoat after bonding and solidification. It can play the role of moisture-proof and damage-proof on the surface.
  • the sealing sleeve first passes through the molding die to bond and fix the multi-layer basalt grid cloth in the plane, and then The planar multi-layer basalt grid cloth is thermally processed on a cylindrical mold and wound into a cylindrical shape.
  • the sealing sleeve can be manufactured by simple machining, saving cost and time.
  • the forming mold includes:
  • the movable half-formwork is fixed on the top surface of the base, corresponds to the fixed half-formwork, and is slidably connected to the top surface of the base; after the movable half-formwork is combined with the fixed half-formwork Forming grooves are formed on the top surface; the forming grooves are rectangular grooves with multi-layer dislocations, so that the two adjacent sides thereof are multi-layer stepped structures;
  • a linear displacement mechanism the linear displacement mechanism can drive the movable half template to slide on the top surface of the base.
  • the sealing sleeve molding die provided by the present invention can bond and fix the multi-layer basalt mesh cloth, and only need to lay the basalt mesh cloth in sequence in the multi-layer rectangular groove in the forming groove and brush the glue.
  • the bonded multi-layer basalt grid cloth is taken off and wound into shape after thermal processing.
  • the forming mold can be divided into two for size adjustment, and adaptive processing is carried out for stay cables of different sizes, which saves mold opening costs, has a simple structure, and has strong applicability.
  • the linear displacement mechanism includes a slideway, a screw and a rocker; the number of the slideways is two, and they are fixed in parallel on the top surface of the base, and perpendicular to the docking surface of the fixed half template; the bottom surface of the movable half template is slidingly connected to the slideway; one end of the screw is rotationally connected to the docking surface of the fixed half template, and the The rod body of the screw rod is threaded inside the movable half-formwork, and the other end passes through the movable half-formwork and is connected to the bracket on the base in rotation; the handle is fixed on the screw rod away from the fixed half-formwork one end.
  • the fast adjustment of the movable half-formwork and the fixed half-formwork can be realized through the rotation of the screw, the adjustment precision is high, and the operation is simple.
  • a plurality of sockets are correspondingly provided on the butt joint surfaces of the fixed half-formwork and the movable half-formwork; the sockets The inside is used for inserting the L-shaped support plate; the tops of the multiple L-shaped support plates are used for connecting the middle plate, and the top surface of the middle plate is flush with the bottom surface of the forming groove.
  • the middle plate can be added.
  • the present invention also includes a press plate corresponding to the forming mold and located above it. After the knot is compacted, since this structure is too conventional, it will not be repeated here. Therefore, the setting of the middle plate can improve the effect of compaction.
  • the present invention discloses a bridge stay cable fire protection system and construction method that are easy to be constructed on site, and has the following beneficial effects:
  • the fireproof layer and sealing layer made of basalt fiber are sequentially wrapped on the outside of the stay cable with the HDPE protective sheath, which can effectively isolate the external flame temperature and prevent the stay cable from being damaged by high temperature.
  • the sealing layer of the present invention adopts a prefabricated assembly structure, which is convenient for rapid installation and molding on site, shortens the construction period, and is convenient for targeted replacement after damage.
  • the staggered arrangement of each layer of basalt grid cloth in the sealing sleeve of the present invention makes the installation and bonding more stable.
  • the staggered arrangement not only improves the structural stability of the bonding, but also has a good sealing effect.
  • the problem of poor on-site construction stability of the prefabricated assembly structure is overcome.
  • the sealing sleeve of the present invention can be manufactured through simple processing, which saves cost and time.
  • the sealing sleeve forming mold can bond and fix the multi-layer basalt grid cloth, and only needs the multi-layer basalt grid cloth in the forming groove Lay the basalt mesh cloth in sequence in the rectangular groove and brush the glue. After the completion, remove the bonded multi-layer basalt mesh cloth and take it out for thermal processing and winding.
  • the forming mold can be divided into two for size adjustment, and adaptive processing is carried out for stay cables of different sizes, which saves the cost of mold opening, and has a simple structure and strong applicability.
  • Fig. 1 is the sectional view of the bridge stay cable fire protection system that is easy to on-site construction provided by the present invention
  • FIG. 2 is the structure schematic diagram after the fireproof layer wrapping provided by the present invention
  • FIG. 3 accompanying drawing is the structural representation of the sealing sleeve provided by the present invention.
  • FIG. 4 is the structural representation of forming mold provided by the present invention.
  • Fig. 5 accompanying drawing is the top view of the molding die provided by the present invention.
  • Fig. 6 accompanying drawing is the side view of forming die provided by the present invention.
  • Fig. 7 accompanying drawing is the structural representation of the adjustment state of the forming mold provided by the present invention.
  • Fig. 8 accompanying drawing is the side view that the molding die provided by the present invention adds the middle plate
  • Figure 9 is a schematic structural view of the winding device provided by the present invention.
  • Figure 10 is a schematic structural view of the winding part provided by the present invention.
  • Figure 11 is a schematic view of the structure provided by the present invention in the direction opposite to that of Figure 10;
  • FIG. 12 accompanying drawing is the front view of the winding part provided by the present invention.
  • FIG. 13 accompanying drawing is the schematic diagram of the ball mechanism provided by the present invention.
  • Fig. 14 accompanying drawing is the schematic diagram of the pressing wheel mechanism provided by the present invention.
  • Figure 15 is a schematic structural view of the rotating ring provided by the present invention.
  • Fig. 16 is a drawing showing the position layout of the pressing wheel mechanism and the ball mechanism provided by the present invention.
  • the embodiment of the present invention discloses a bridge stay cable fire protection system that is easy to construct on site, including a stay cable 1, and a HDPE protective sheath 2 wrapped on the outside of the stay cable 1; include:
  • Fireproof layer 3 is a basalt fiber cloth strip 31 spirally wound on the outside of the HDPE protective sheath 2;
  • the size of the cloth 411 is the same, and the edges on both sides and the upper and lower edges are arranged in a stepped staggered layer; the basalt mesh cloth 411 in the innermost layer of each sealing sleeve 41 is bonded and fixed with the fireproof layer 3, and each sealing sleeve
  • the basalt mesh cloth 411 corresponding to the two side edges of 41 is butted, and the stepped staggered layers are bonded and fixed; Adhesive fixation.
  • the outside of the sealing layer 4 is coated with a weather-resistant topcoat.
  • both ends of the basalt fiber cloth strip 31 are bonded and fixed to the outer side of the HDPE protective sheath 2 .
  • the butt joints of the two sealing sleeves 41 and/or the middle part of the sealing sleeves 41 are fastened with hoops; when the sealing layer 4 is bonded and solidified, the hoops are removed.
  • sealing layer 4 is coated with a weather-resistant topcoat after bonding and solidification.
  • the sealing sleeve 41 provided in this embodiment first bonds and fixes the multi-layer basalt mesh cloth 411 in the plane through the molding die 5, and then heat-processes and winds the planar multi-layer basalt mesh cloth 411 on the cylindrical mould. Cylindrical.
  • molding die 5 comprises:
  • Movable half-formwork 53; Movable half-formwork 53 is fixed on the top surface of base 51, and corresponds to fixed half-formwork 52, and is slidably connected with the top surface of base 51; Movable half-formwork 53 and fixed half-formwork 52 are combined to form a molding on the top surface
  • the groove 55; the forming groove 55 is a rectangular groove 551 with multi-layer dislocation, so that the two adjacent sides thereof are multi-layer stepped structures;
  • Linear displacement mechanism 54 the linear displacement mechanism 54 can drive the movable half template 53 to slide on the top surface of the base 51 .
  • the linear displacement mechanism 54 includes a slideway 541, a screw rod 542 and a rocker 543; the number of the slideways 541 is two, and they are fixed on the top surface of the base 51 in parallel and perpendicular to the docking surface of the fixed half template 52;
  • the bottom surface of template 53 is slidingly connected with slideway 541; one end of screw rod 542 is rotationally connected with the docking surface of fixed half template 52, and the rod body of screw rod 542 is threadedly connected with movable half template 53, and the other end passes through movable half template 53, and connects with base 51.
  • the bracket 544 is rotatably connected; the handle 543 is fixed on the end of the screw rod 542 away from the fixed half template 52 .
  • the docking surfaces of the fixed half template 52 and the movable half template 53 are correspondingly provided with a plurality of sockets 56; the sockets 56 are used to insert L-shaped support plates 57; the tops of the multiple L-shaped support plates 57 are used to connect the middle plate 58 The top surface of the intermediate plate 58 is flush with the bottom surface of the formed groove 55 .
  • the fireproof layer 3 formed by winding the basalt fiber cloth strips 31 provided in this embodiment can be wound manually.
  • corresponding automatic winding equipment can also be used for winding, such as the winding device 6 developed by the inventor himself, see the accompanying drawings, the specific structure of the device includes :
  • the rotating cylinder 61 is composed of two half cylinders 611 docked, and is sleeved on the outside of the cable;
  • the side wall of the rotating cylinder 61 is spirally connected with a plurality of pressure roller mechanisms 65, and the rollers of the pressure roller mechanisms 65 652 rolls and fits with the outer side wall of the stay cable, and the rolling direction of the roller 652 forms an inclination angle with the length direction of the stay cable;
  • the outer side walls of the two semi-cylindrical bodies 611 are fixed with a symmetrical bearing frame 612; one bearing frame 612 It is used to rotate and connect the fiber cloth roll, and another carrier 612 is used to place the weight body;
  • the rotating ring 62 is composed of two half-rings 621 docked, and is sleeved on the outside of the stay cable; the rotating ring 62 is connected to the top of the rotating cylinder 61 in a rotating manner;
  • Guiding and pressing mechanism 63 is connected to the bottom end of rotating cylinder 61, and is used for deriving and pressing the basalt fiber cloth strip of fiber cloth strip roll on the outer wall of the stay cable;
  • Hoisting mechanism 64 comprises the linear guide rail 641 that is fixed on the hoist, and the drive trolley 642 that is slidably connected on the linear guide rail 641;
  • the hoisting machine 643 is installed on the driving trolley 642, the sling 6431 of hoisting machine 643 and the connection of rotating ring 62 The top edge is fixedly connected.
  • the pressure wheel mechanism 65 includes an adjustment screw 651, a roller 652, a spring 653 and an adjustment nut 654; the side wall of the rotating cylinder 61 is provided with a passing hole, and the outer wall of the rotating cylinder 61 is fixed with a limit tube corresponding to the passing hole.
  • the cross-section of the inner hole of the limiting tube 655 is rectangular; the adjusting screw 651 passes through the round hole, and one end of the adjusting screw 651 has a flat section 6511 with a rectangular cross section, the flat section 6511 is slidingly connected with the limiting tube 655, and passes through Out of the limit tube 655, and the end has a limit block 6512; the roller 652 is rotatably connected to the end of the adjustment screw 651 away from the limit block 6512; Between the limiting blocks 6512 ; the adjusting nut 654 is threadedly connected with the adjusting screw rod 651 , and is pressed against the inner wall of the rotating cylinder 61 .
  • ball mechanisms 66 installed on the inner wall of the rotating cylinder 61; the ball mechanisms 66 include support springs 661, arc-shaped plates 662 and balls 663; The inner wall of cylinder 61 is fixed; the protruding surface of arc-shaped plate 662 is fixedly connected with the other end of support spring 661; the number of balls 663 is multiple, and evenly rotates and embedded in the concave surface of arc-shaped plate 662; balls 663 and stay cables Roll fit on the outer sidewall.
  • the ball mechanisms 66 include support springs 661, arc-shaped plates 662 and balls 663;
  • the inner wall of cylinder 61 is fixed; the protruding surface of arc-shaped plate 662 is fixedly connected with the other end of support spring 661; the number of balls 663 is multiple, and evenly rotates and embedded in the concave surface of arc-shaped plate 662; balls 663 and stay cables Roll fit on the outer sidewall.
  • the number of pressure wheel mechanisms 65 is four, and the number of ball mechanisms 66 is two; when the rotating cylinder 61 is unfolded in a plane, the four pressure wheel mechanisms 65 are arranged on a diagonal line of the plane rotating cylinder 61; The two ball mechanisms 66 are arranged on the other diagonal.
  • the butt edges of the two half cylinders 611 and the two half rings 621 are fastened and connected by bolts; the bottom side wall of the rotating cylinder 61 is formed with an annular chute 613; the bottom edge of the rotating ring 62 has a sliding connection The ring slide rail 622 in the ring slide groove 613.
  • Guide pressing mechanism 63 comprises guide plate 631, matching plate 632, fastening bolt 633, fastening nut 634 and adjusting spring 635;
  • a strip-shaped guide hole 6311 is opened on the plate 631, and the side of the guide plate 631 has a pressure head 6312 that fits with the outer wall of the stay cable;
  • the stay cables are parallel; the number of fastening bolts 633 is two, and they are symmetrically arranged on both sides of the stay cables.
  • the fastening bolts 633 pass through the guide plate 631 and the mating plate 632, and their bolt heads are pressed against the outer surface of the guide plate 631 ;
  • the fastening nut 634 is threadedly connected with the fastening bolt 633, and presses against the outer surface of the mating plate 632; .
  • the reinforcement nut is threadedly connected with the fastening bolt 633 and abuts against the inner surface of the mating plate 632 .
  • Both the guide plate 631 and the mating plate 632 are arc-shaped plates, and there are extension plates 636 on both side edges for connecting fastening bolts 633 .
  • a rotating seat 6121 for connecting with a fiber cloth strip roll is installed on the carrier frame 612 .
  • the driving dolly 642 is an electric rubber wheel power structure.
  • the winding device provided in this embodiment can adapt to the winding work of the stay cables arranged obliquely.
  • the stay cables Since there is a certain angle between the stay cables and the ground, it will interfere with the installation of the device. Therefore, the stay cables The part close to the ground is still wound manually, and then the device is assembled:
  • the adjustment nut 654 can determine the tightness between the roller 652 and the stay cable.
  • the roller 652 requires a high fit with the stay cable to prevent slipping Therefore, in order to achieve adjustment accuracy, the adjustment screw 651 sleeved with the spring 653 is provided with a scale, and the four rollers 652 can be adjusted according to this scale.
  • the angle of the roller 652 is pre-set so that it can advance on the stay cable while rolling.
  • the two half cylinders 611 are butted by bolts to form the rotating cylinder 61, and then the two half rings 621 are butted by bolts to form the rotating ring 62.
  • the rotating ring 62 is connected with the suspension rope 6431 of the hoist 643, the linear guide rail 641 is fixed on the elevator, and the driving trolley 642 is slidably connected on the linear guide rail 641; On trolley 642.
  • One load frame 612 rotates and connects the fiber cloth strip roll, and the other load frame 612 places the counterweight.
  • the basalt fiber cloth strip stretched out from the fiber cloth strip passes through the load frame 612 and the guide hole 6311, and is pressed by the pressure head 6312 on the cable-stayed on the rope.
  • the moving and winding speeds of the two cooperate with each other, and can be set in advance according to the inclination angle of the stay cable, and it is only necessary to ensure that the suspension rope 6431 is in a vertical state all the time.
  • a rotating force is given to the rotating cylinder 61, which is consistent with the principle of the flywheel.
  • the rotating cylinder 61 starts to rotate to wind the basalt fiber strips.
  • each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.
  • the description is relatively simple, and for the related information, please refer to the description of the method part.

Abstract

一种易于现场施工的桥梁斜拉索防火防护体系及施工方法，包括斜拉索（1），和包裹在斜拉索（1）外侧的HDPE保护套（2）；还包括防火层（3）和密封层（4）；在斜拉索（1）外侧套设HDPE保护套（2），在HDPE保护套（2）外侧以螺旋缠绕的方式由下至上缠绕玄武岩纤维布条（31），形成防火层（3）；在斜拉索（1）最下端的防火层（3）外侧涂胶，并套设密封套管（41），密封套管（41）最内层的玄武岩网格布（411）与防火层（3）粘结固定；每根密封套管（41）的两侧边沿对应的玄武岩网格布（411）对接，且阶梯状错层面粘结固定；由下至上按照上述方法续接密封套管（41），上下相邻的两根密封套管（41）的上下边沿对应的玄武岩网格布（411）对接，且阶梯状错层面粘结固定，形成密封层（4）。该体系易于现场施工，能够有效隔离外部火焰温度，防止斜拉索高温受损。

Description

一种易于现场施工的桥梁斜拉索防火防护体系及施工方法 技术领域
本发明涉及斜拉桥缆索防火与消防技术领域，更具体的说是涉及一种易于现场施工的桥梁斜拉索防火防护体系及施工方法。
背景技术
我国从上世纪90年代开始兴建大型索吊结构桥梁，近30年时间的运行，桥梁建设期、运行期的事故与灾害的发生率也随之增长，给社会造成了不可估量的损失。随着我国经济社会的发展，桥梁交通流量增多，桥梁上运输易燃易爆物品的车辆也不断增多，由此导致的车辆燃烧起火事件也越来越多，桥梁防火问题逐渐受到重视。对于缆索体系桥梁，缆索为桥梁主要承重构件，一旦在火灾中受到损伤，将使得交通受阻，造成巨大的经济损失，同时对桥梁安全构成很大威胁。目前，部分缆索体系桥梁在运营期间遭遇了不同程度的火灾，造成了一定的损失。
例如：希腊Rion-Antirion大桥被水平闪电击中，闪电将高密度聚乙烯和蜡质防腐层点燃导致斜拉索断裂；巴西查万提斯(Chavantes)悬索桥因不明原因发生火灾，导致桥梁无法通车；韩国蔚山大桥因两艘停靠在码头上的化学品船突发爆炸导致桥梁紧急关闭；鹤洞大桥在2008年因为灯饰突然着火造成斜拉索保护层破坏；美国旧金山-奥克兰海湾大桥上车辆发生火灾导致部分车道交通关闭；美国亚利桑那州坦佩市一列货运火车在铁路桥上脱轨，引起大火，导致部分桥梁垮塌；美国赫斯佩里亚的兰切罗路桥立交桥引起火灾，因工人运用割枪不当引起火灾导致立交桥关闭；河北承德承秦高速太平庄互通收费站工地内的斜拉桥独塔发生火灾，造成施工暂停，社会影响很大；南京长江第二大桥南汊斜拉桥，由于一辆满载易拉罐的大型货车突然发生自燃，导致斜拉索下部HDPE外护套被完全烧掉；哈尔滨四方台大桥9车连撞事故，两根斜拉索PE防护材料部分烧毁，出现了钢丝外露等问题；2021年3月20日南沙大桥发生大客车自燃，引起火灾，火焰高度达到10余米左右。通过对以上 的桥梁火灾事故分析，我们可以发现，桥梁上发生火灾事故的种类是多种多样的，其中包括桥上的小汽车、客车、货车以及油罐车的燃烧，还有自然灾害、电路着火、桥下的油轮爆炸等小概率事件。桥梁失火，不仅对人员或车辆通行造成危害，同时还影响到桥梁的修复及相关构件的更换，造成重大的社会影响与经济损失。
现有技术中已经非常重视缆索外层的防火层的设置，但是现有的防火层均为现场施工，其施工效率低，施工周期长，不仅初始施工浪费时间，而且在后期的维修中也会导致维修时间过长。而且，由于人为施工导致的施工一致性差，无法避免由于人为施工造成的结构缺陷。
因此，如何提供一种结构简单、施工方便、且具有良好防火效果的桥梁斜拉索防火防护体系及施工方法，是本领域技术人员亟需解决的问题。
发明内容
有鉴于此，本发明提供了一种易于现场施工的桥梁斜拉索防火防护体系，旨在解决上述技术问题。
为了实现上述目的，本发明采用如下技术方案：
一种易于现场施工的桥梁斜拉索防火防护体系，包括斜拉索，和包裹在所述斜拉索外侧的HDPE保护套；还包括：
防火层；所述防火层为螺旋缠绕在所述HDPE保护套外侧的玄武岩纤维布条；
密封层；所述密封层包括多段套设在所述防火层外侧的密封套管；所述密封套管由多层玄武岩网格布粘结组成；每根所述密封套管的多层所述玄武岩网格布的尺寸相同，且其两侧边沿和上下边沿均呈阶梯状错层布置；每根所述密封套管最内层的所述玄武岩网格布与所述防火层粘结固定，每根所述密封套管的两侧边沿对应的所述玄武岩网格布对接，且阶梯状错层面粘结固定；上下相邻的两根所述密封套管的上下边沿对应的所述玄武岩网格布对接，且阶梯状错层面粘结固定。
通过上述技术方案，本发明在套有HDPE保护套的斜拉索外侧依次包裹玄武岩纤维材质的防火层和密封层，能够有效隔离外部火焰温度，防止斜拉索高温受损；本发明的密封层采用预制装配式结构，便于现场快速安装成型，缩短施工周期，且破损后便于针对性更换，由于密封套管中各层玄武岩网格布的错层布置，使得安装粘结的稳定性更强，克服了预制装配结构现场施工稳定性差的问题。
需要进一步说明的是，本发明提供的密封套管中各层玄武岩网格布通过B-FRS阻燃硅胶依次粘结，最内层的玄武岩网格布同样通过B-FRS阻燃硅胶与防火层粘结。而且，错层布置不仅提高了粘结的结构稳定性，并且具有良好的密封效果。
优选的，在上述一种一种易于现场施工的桥梁斜拉索防火防护体系，所述密封层外侧涂覆有耐候面漆。能够起到表面防潮、防损的作用。
优选的，在上述一种一种易于现场施工的桥梁斜拉索防火防护体系，所述玄武岩纤维布条的两端与所述HDPE保护套外侧粘结固定。能够进一步提高结构稳定性。
本发明还提供了一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，包括以下步骤：
S1、在所述斜拉索外侧套设所述HDPE保护套，在所述HDPE保护套外侧以螺旋缠绕的方式由下至上缠绕所述玄武岩纤维布条，形成所述防火层；
S2、在所述斜拉索最下端的所述防火层外侧涂胶，并套设所述密封套管，所述密封套管最内层的所述玄武岩网格布与所述防火层粘结固定；每根所述密封套管的两侧边沿对应的所述玄武岩网格布对接，且阶梯状错层面粘结固定；由下至上按照上述方法续接所述密封套管，上下相邻的两根所述密封套管的上下边沿对应的所述玄武岩网格布对接，且阶梯状错层面粘结固定，形成所述密封层。
通过上述技术方案，本发明提供的施工方法能够快速对密封层进行施工，通过逐层套设拼合密封套管，既能够提高结构稳定性和密封效果，又能够加快施工进度，施工效率高、施工效果好，通过预制装配的方式克服了传统的现场施工的一致性差的问题。
优选的，在上述一种易于现场施工的桥梁斜拉索防火防护体系的施工方法中，所述密封层粘结完成后，两根所述密封套管的对接处和/或所述密封套管的中部紧固有抱箍；当密封层粘结凝固后，拆除所述抱箍。当粘结完成后可以通过抱箍进行粘结固定，当粘结凝固后，再拆除抱箍，方法简单可靠，能够提高粘结效果。
优选的，在上述一种易于现场施工的桥梁斜拉索防火防护体系的施工方法中，所述密封层粘结凝固后涂刷耐候面漆。能够起到表面防潮、防损的作用。
优选的，在上述一种易于现场施工的桥梁斜拉索防火防护体系的施工方法中，所述密封套管先通过成型模具将多层所述玄武岩网格布在平面内粘结固定，再将平面的多层所述玄武岩网格布在筒状模具上热加工卷绕成圆柱筒状。密封套管可以通过简单的加工制造而成，节省成本和时间。
优选的，在上述一种易于现场施工的桥梁斜拉索防火防护体系的施工方法中，所述成型模具包括：
底座；
固定半模板；所述固定半模板固定在所述底座顶面；
活动半模板；所述活动半模板固定在所述底座顶面，且与所述固定半模板对应，并与所述底座顶面滑动连接；所述活动半模板与所述固定半模板对合后顶面形成有成型凹槽；所述成型凹槽为多层错位开设的矩形槽，使得其相邻的两条侧边为多层阶梯状结构；
直线位移机构；所述直线位移机构能够驱动所述活动半模板在所述底座顶面滑动。
本发明提供的密封套管成型模具能够将多层玄武岩网格布进行粘结固定，只需要在成型凹槽内的多层矩形槽内依次铺设玄武岩网格布并刷胶即可，完成后将粘结好的多层玄武岩网格布取下经过热加工卷绕成型。该成型模具可以一分为二进行尺寸调节，针对不同尺寸的斜拉索进行适应性加工，节省了开模成本，结构简单，适用性强。
优选的，在上述一种易于现场施工的桥梁斜拉索防火防护体系的施工方法中，所述直线位移机构包括滑道、螺杆和摇柄；所述滑道的数量为两条， 且平行固定在所述底座顶面，并与所述固定半模板的对接面垂直；所述活动半模板底面与所述滑道滑动连接；所述螺杆一端与所述固定半模板的对接面转动连接，所述螺杆的杆体与所述活动半模板内部螺纹连接，另一端穿出所述活动半模板，与所述底座上的支架转动连接；所述摇柄固定在所述螺杆远离所述固定半模板的一端。通过螺杆转动能够实现活动半模板和固定半模板的快速调节，调节精度高，且操作简单。
优选的，在上述一种易于现场施工的桥梁斜拉索防火防护体系的施工方法中，所述固定半模板和所述活动半模板的对接面对应开设有多个插孔；所述插孔内用于插入L型支撑板；多个所述L型支撑板顶端用于连接中间板，所述中间板的顶面与所述成型凹槽的底面平齐。当活动半模板和固定半模板的间隙过大时，可以增加中间板，在此需要说明的是，本发明还包括与成型模具对应的，位于其上方的压板，在多层玄武岩网格布粘结后进行压实，由于此结构过于常规，在此不再赘述。因此，中间板的设置能够提高压实时的效果。
经由上述的技术方案可知，与现有技术相比，本发明公开提供了一种易于现场施工的桥梁斜拉索防火防护体系及施工方法，具有以下有益效果：
1、本发明在套有HDPE保护套的斜拉索外侧依次包裹玄武岩纤维材质的防火层和密封层，能够有效隔离外部火焰温度，防止斜拉索高温受损。
2、本发明的密封层采用预制装配式结构，便于现场快速安装成型，缩短施工周期，且破损后便于针对性更换。
3、本发明的密封套管中各层玄武岩网格布的错层布置，使得安装粘结的稳定性更强，错层布置不仅提高了粘结的结构稳定性，并且具有良好的密封效果，克服了预制装配结构现场施工稳定性差的问题。
4、本发明的密封套管可以通过简单的加工制造而成，节省成本和时间，密封套管成型模具能够将多层玄武岩网格布进行粘结固定，只需要在成型凹槽内的多层矩形槽内依次铺设玄武岩网格布并刷胶即可，完成后将粘结好的多层玄武岩网格布取下经过热加工卷绕成型。该成型模具可以一分为二进行 尺寸调节，针对不同尺寸的斜拉索进行适应性加工，节省了开模成本，结构简单，适用性强。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图获得其他的附图。
图1附图为本发明提供的易于现场施工的桥梁斜拉索防火防护体系的剖面图；
图2附图为本发明提供的防火层包裹后的结构示意图；
图3附图为本发明提供的密封套管的结构示意图；
图4附图为本发明提供的成型模具的结构示意图；
图5附图为本发明提供的成型模具的俯视图；
图6附图为本发明提供的成型模具的侧视图；
图7附图为本发明提供的成型模具调节状态的的结构示意图；
图8附图为本发明提供的成型模具增加中间板的侧视图；
图9附图为本发明提供的缠绕装置的结构示意图；
图10附图为本发明提供的缠绕部分的结构示意图；
图11附图为本发明提供的与图10方向相反的结构示意图；
图12附图为本发明提供的缠绕部分的主视图；
图13附图为本发明提供的滚珠机构的示意图；
图14附图为本发明提供的压轮机构的示意图；
图15附图为本发明提供的转动环的结构示意图；
图16附图为本发明提供的压轮机构和滚珠机构的位置布置图。
其中：
1-斜拉索；
2-HDPE保护套；
3-防火层；
31-玄武岩纤维布条；
4-密封层；
41-密封套管；411-玄武岩网格布；
5-成型模具；
51-底座；52-固定半模板；53-活动半模板；54-直线位移机构；541-滑道；542-螺杆；543-摇柄；544-支架；55-成型凹槽；551-矩形槽；56-插孔；57-L型支撑板；58-中间板；
6-缠绕装置；
61-旋转筒体；611-半筒体；612-承载架；6121-转动座；613-环形滑槽；62-转动环；621-半环；622-环形滑轨；63-导向压紧机构；631-导向板；6311-导向孔；6312-压头；632-配合板；633-紧固螺栓；634-紧固螺母；635-调节弹簧；636-延伸板；64-吊装机构；641-直线导轨；642-驱动小车；643-卷扬机；6431-吊绳；65-压轮机构；651-调节螺杆；6511-扁平段；6512-限位块；652-滚轮；653-弹簧；654-调节螺母；655-限位管；66-滚珠机构；661-支撑弹簧；662-弧形板；663-滚珠。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参见附图1至附图3，本发明实施例公开了一种易于现场施工的桥梁斜拉索防火防护体系，包括斜拉索1，和包裹在斜拉索1外侧的HDPE保护套2；还包括：
防火层3；防火层3为螺旋缠绕在HDPE保护套2外侧的玄武岩纤维布条31；
密封层4；密封层4包括多段套设在防火层3外侧的密封套管41；密封套管41由多层玄武岩网格布411粘结组成；每根密封套管41的多层玄武岩网格布411的尺寸相同，且其两侧边沿和上下边沿均呈阶梯状错层布置；每 根密封套管41最内层的玄武岩网格布411与防火层3粘结固定，每根密封套管41的两侧边沿对应的玄武岩网格布411对接，且阶梯状错层面粘结固定；上下相邻的两根密封套管41的上下边沿对应的玄武岩网格布411对接，且阶梯状错层面粘结固定。
为了进一步优化上述技术方案，密封层4外侧涂覆有耐候面漆。
为了进一步优化上述技术方案，玄武岩纤维布条31的两端与HDPE保护套2外侧粘结固定。
本实施例提供的易于现场施工的桥梁斜拉索防火防护体系的施工方法包括以下步骤：
S1、在斜拉索1外侧套设HDPE保护套2，在HDPE保护套2外侧以螺旋缠绕的方式由下至上缠绕玄武岩纤维布条31，形成防火层3；
S2、在斜拉索1最下端的防火层3外侧涂胶，并套设密封套管41，密封套管41最内层的玄武岩网格布411与防火层3粘结固定；每根密封套管41的两侧边沿对应的玄武岩网格布411对接，且阶梯状错层面粘结固定；由下至上按照上述方法续接密封套管41，上下相邻的两根密封套管41的上下边沿对应的玄武岩网格布411对接，且阶梯状错层面粘结固定，形成密封层4。
进一步地，密封层4粘结完成后，两根密封套管41的对接处和/或密封套管41的中部紧固有抱箍；当密封层4粘结凝固后，拆除抱箍。
再进一步地，密封层4粘结凝固后涂刷耐候面漆。
本实施例提供的密封套管41先通过成型模具5将多层玄武岩网格布411在平面内粘结固定，再将平面的多层玄武岩网格布411在筒状模具上热加工卷绕成圆柱筒状。
参见附图4至附图8，成型模具5包括：
底座51；
固定半模板52；固定半模板52固定在底座51顶面；
活动半模板53；活动半模板53固定在底座51顶面，且与固定半模板52对应，并与底座51顶面滑动连接；活动半模板53与固定半模板52对合后顶面形成有成型凹槽55；成型凹槽55为多层错位开设的矩形槽551，使得其相邻的两条侧边为多层阶梯状结构；
直线位移机构54；直线位移机构54能够驱动活动半模板53在底座51顶面滑动。
具体的，直线位移机构54包括滑道541、螺杆542和摇柄543；滑道541的数量为两条，且平行固定在底座51顶面，并与固定半模板52的对接面垂直；活动半模板53底面与滑道541滑动连接；螺杆542一端与固定半模板52的对接面转动连接，螺杆542的杆体与活动半模板53内部螺纹连接，另一端穿出活动半模板53，与底座51上的支架544转动连接；摇柄543固定在螺杆542远离固定半模板52的一端。
固定半模板52和活动半模板53的对接面对应开设有多个插孔56；插孔56内用于插入L型支撑板57；多个L型支撑板57顶端用于连接中间板58，中间板58的顶面与成型凹槽55的底面平齐。
需要说明的是，本实施例提供的由玄武岩纤维布条31缠绕形成的防火层3可以通过人工缠绕的方式进行缠绕。同时，为了克服人工缠绕的登高危险操作，以及缠绕一致性差的缺陷，也可以采用相应的自动缠绕设备进行缠绕，如本发明人自行研发的缠绕装置6，参见附图，该装置的具体结构包括：
旋转筒体61；旋转筒体61由两个半筒体611对接组成，并套设在斜拉索外侧；旋转筒体61侧壁螺旋连接有多个压轮机构65，压轮机构65的滚轮652与斜拉索外侧壁滚动贴合，且滚轮652的滚动方向与斜拉索的长度方向形成倾斜角；两个半筒体611的外侧壁均固定有对称的承载架612；一个承载架612用于转动连接纤维布条卷，另一个承载架612用于放置配重体；
转动环62；转动环62由两个半环621对接组成，且套设在斜拉索外侧；转动环62与旋转筒体61顶端转动连接；
导向压紧机构63；导向压紧机构63连接在旋转筒体61的底端，且用于将纤维布条卷的玄武岩纤维布条导出并压紧在斜拉索外侧壁上；
吊装机构64；吊装机构64包括固定在升降机上的直线导轨641，以及滑动连接在直线导轨641上的驱动小车642；驱动小车642上安装有卷扬机643，卷扬机643的吊绳6431与转动环62的顶沿固定连接。
具体的：
压轮机构65包括调节螺杆651、滚轮652、弹簧653和调节螺母654；旋转筒体61的侧壁开设有通过圆孔，旋转筒体61的外侧壁固定有与通过圆孔 对应的限位管655，限位管655的内孔横截面为矩形；调节螺杆651穿过通过圆孔，调节螺杆651一端具有横截面为矩形的扁平段6511，扁平段6511与限位管655滑动连接，并穿出限位管655，且端头具有限位块6512；滚轮652转动连接在调节螺杆651远离限位块6512的一端；弹簧653套设在扁平段6511上，且顶紧在限位管655和限位块6512之间；调节螺母654与调节螺杆651螺纹连接，且顶紧在旋转筒体61的内壁上。
还包括安装在旋转筒体61内壁上的多组滚珠机构66；滚珠机构66包括支撑弹簧661、弧形板662和滚珠663；支撑弹簧661的数量为多个，且支撑弹簧661的一端与旋转筒体61内壁固定；弧形板662的凸出面与支撑弹簧661的另一端固定连接；滚珠663的数量为多个，且均匀转动嵌入在弧形板662的凹陷面；滚珠663与斜拉索的外侧壁滚动贴合。
压轮机构65的数量为四个，滚珠机构66的数量为两个；当旋转筒体61呈平面展开时，四个压轮机构65布置在平面的旋转筒体61的一条对角线上；两个滚珠机构66布置在另一条对角线上。
两个半筒体611的对接边沿和两个半环621的对接边沿均通过螺栓紧固连接；旋转筒体61的底端侧壁形成有环形滑槽613；转动环62底沿具有滑动连接在环形滑槽613内的环形滑轨622。
导向压紧机构63包括导向板631、配合板632、紧固螺栓633、紧固螺母634和调节弹簧635；导向板631固定在一个半筒体611的底端，且与斜拉索平行，导向板631上开设有长条形的导向孔6311，导向板631侧边具有与斜拉索外侧壁贴合的压头6312；配合板632固定在另一个半筒体611的底端，且与斜拉索平行；紧固螺栓633的数量为两根，且对称布置在斜拉索的两侧，紧固螺栓633穿过导向板631和配合板632，且其螺栓头顶紧导向板631的外侧面；紧固螺母634与紧固螺栓633螺纹连接，且顶紧配合板632的外侧面；调节弹簧635套设在紧固螺栓633上，且两端顶紧在导向板631和配合板632之间。
还包括加强螺母；加强螺母与紧固螺栓633螺纹连接，且与配合板632的内侧面抵接。
导向板631和配合板632均为弧形板，且两侧边沿具有用于连接紧固螺栓633的延伸板636。
承载架612上安装有用于与纤维布条卷连接的转动座6121。
驱动小车642为电动的胶轮动力结构。
本实施例提供的缠绕装置能够适应倾斜布置的斜拉索缠绕工作，首先需要强调的是，由于斜拉索与地面存在一定的角度，所以对于该装置的安装会产生干涉，因此，斜拉索靠近地面的部分仍然采用人工缠绕的方式，然后进行该装置的组装：
首先，根据斜拉索的尺寸对调节螺母654进行调节，调节螺母654能够决定滚轮652与斜拉索的贴紧程度，在此，滚轮652要求与斜拉索的贴合度要高，防止打滑，因此为了实现调节精度，套设弹簧653部分的调节螺杆651设置有刻度，可以根据这个刻度对四个滚轮652进行调节。另外，滚轮652的角度是事先设置好的，可以使其滚动时在斜拉索上前进。
然后，将两个半筒体611通过螺栓对接组成旋转筒体61，再将两个半环621通过螺栓对接组成转动环62，组装时，转动环62的环形滑轨622嵌入旋转筒体61的环形滑槽613内，实现二者的转动连接，将转动环62与卷扬机643的吊绳6431连接，升降机上固定有直线导轨641，直线导轨641上滑动连接有驱动小车642；卷扬机643安装在驱动小车642上。
一个承载架612中转动连接纤维布条卷，另一个承载架612放置配重体，纤维布条卷抻出的玄武岩纤维布条穿出承载架612和导向孔6311，通过压头6312压在斜拉索上。
最后，启动驱动小车642和卷扬机643，二者的移动和收卷速度是相互配合的，可以事先根据斜拉索的倾斜角度进行设定，只需要一直保证吊绳6431处于竖直状态即可。启动时，配合给旋转筒体61一个转动力，则如同飞轮的原理一致，在吊绳6431的提拉和滚轮652的作用下，使得旋转筒体61开始转动，进行玄武岩纤维布条的缠绕。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言，由于其与实施例公开的方法相对应，所以描述的比较简单，相关之处参见方法部分说明即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易 见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种易于现场施工的桥梁斜拉索防火防护体系，包括斜拉索(1)，和包裹在所述斜拉索(1)外侧的HDPE保护套(2)；其特征在于，还包括：
    防火层(3)；所述防火层(3)为螺旋缠绕在所述HDPE保护套(2)外侧的玄武岩纤维布条(31)；
    密封层(4)；所述密封层(4)包括多段套设在所述防火层(3)外侧的密封套管(41)；所述密封套管(41)由多层玄武岩网格布(411)粘结组成；每根所述密封套管(41)的多层所述玄武岩网格布(411)的尺寸相同，且其两侧边沿和上下边沿均呈阶梯状错层布置；每根所述密封套管(41)最内层的所述玄武岩网格布(411)与所述防火层(3)粘结固定，每根所述密封套管(41)的两侧边沿对应的所述玄武岩网格布(411)对接，且阶梯状错层面粘结固定；上下相邻的两根所述密封套管(41)的上下边沿对应的所述玄武岩网格布(411)对接，且阶梯状错层面粘结固定。
  2. 根据权利要求1所述的一种易于现场施工的桥梁斜拉索防火防护体系，其特征在于，所述密封层(4)外侧涂覆有耐候面漆。
  3. 根据权利要求1所述的一种易于现场施工的桥梁斜拉索防火防护体系，其特征在于，所述玄武岩纤维布条(31)的两端与所述HDPE保护套(2)外侧粘结固定。
  4. 一种权利要求1-3中任一项所述的易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，包括以下步骤：
    S1、在所述斜拉索(1)外侧套设所述HDPE保护套(2)，在所述HDPE保护套(2)外侧以螺旋缠绕的方式由下至上缠绕所述玄武岩纤维布条(31)，形成所述防火层(3)；
    S2、在所述斜拉索(1)最下端的所述防火层(3)外侧涂胶，并套设所述密封套管(41)，所述密封套管(41)最内层的所述玄武岩网格布(411)与所述防火层(3)粘结固定；每根所述密封套管(41)的两侧边沿对应的所述玄武岩网格布(411)对接，且阶梯状错层面粘结固定；由下至上按照上述方法续接所述密封套管(41)，上下相邻的两根所述密封套管(41)的上下边沿对应的所述玄武岩网格布(411)对接，且阶梯状错层面粘结固定，形成所述密封层(4)。
  5. 根据权利要求4所述的一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，所述密封层(4)粘结完成后，两根所述密封套管(41)的对接处和/或所述密封套管(41)的中部紧固有抱箍；当所述密封层(4)粘结凝固后，拆除所述抱箍。
  6. 根据权利要求5所述的一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，所述密封层(4)粘结凝固后涂刷耐候面漆。
  7. 根据权利要求4所述的一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，所述密封套管(41)先通过成型模具(5)将多层所述玄武岩网格布(411)在平面内粘结固定，再将平面的多层所述玄武岩网格布(411)在筒状模具上热加工卷绕成圆柱筒状。
  8. 根据权利要求7所述的一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，所述成型模具(5)包括：
    底座(51)；
    固定半模板(52)；所述固定半模板(52)固定在所述底座(51)顶面；
    活动半模板(53)；所述活动半模板(53)固定在所述底座(51)顶面，且与所述固定半模板(52)对应，并与所述底座(51)顶面滑动连接；所述活动半模板(53)与所述固定半模板(52)对合后顶面形成有成型凹槽(55)；所述成型凹槽(55)为多层错位开设的矩形槽(551)，使得其相邻的两条侧边为多层阶梯状结构；
    直线位移机构(54)；所述直线位移机构(54)能够驱动所述活动半模板(53)在所述底座(51)顶面滑动。
  9. 根据权利要求8所述的一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，所述直线位移机构(54)包括滑道(541)、螺杆(542)和摇柄(543)；所述滑道(541)的数量为两条，且平行固定在所述底座(51)顶面，并与所述固定半模板(52)的对接面垂直；所述活动半模板(53)底面与所述滑道(541)滑动连接；所述螺杆(542)一端与所述固定半模板(52)的对接面转动连接，所述螺杆(542)的杆体与所述活动半模板(53)内部螺纹连接，另一端穿出所述活动半模板(53)，与所述底座(51)上的支架(544)转动连接；所述摇柄(543)固定在所述螺杆(542)远离所述固定半模板(52)的一端。
  10. 根据权利要求8或9所述的一种易于现场施工的桥梁斜拉索防火防护体系的施工方法，其特征在于，所述固定半模板(52)和所述活动半模板(53)的对接面对应开设有多个插孔(56)；所述插孔(56)内用于插入L型支撑板(57)；多个所述L型支撑板(57)顶端用于连接中间板(58)，所述中间板(58)的顶面与所述成型凹槽(55)的底面平齐。
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