CN111424548A - Suspension bridge main cable strand forming device and construction method thereof - Google Patents
Suspension bridge main cable strand forming device and construction method thereof Download PDFInfo
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- CN111424548A CN111424548A CN202010266627.7A CN202010266627A CN111424548A CN 111424548 A CN111424548 A CN 111424548A CN 202010266627 A CN202010266627 A CN 202010266627A CN 111424548 A CN111424548 A CN 111424548A
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- 239000000725 suspension Substances 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000009987 spinning Methods 0.000 claims abstract description 44
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000004873 anchoring Methods 0.000 claims description 20
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 26
- 238000009954 braiding Methods 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 8
- 238000009941 weaving Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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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
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention provides a suspension bridge main cable strand forming device and a construction method thereof, wherein the strand forming device is fixedly connected with a bottom cross beam of a gate frame of a catwalk by using an upright post through a bolt, the bottom cross beam of the gate frame is fixedly connected with a bearing rope of the catwalk, and a steel wire load borne by the strand forming device is transmitted to the catwalk through the bottom cross beam of the gate frame of the catwalk; the grid is inserted into the cross beam of the support frame according to the distance between the cable strands and is fixed with the cross beam of the support frame through bolts. The grid is mainly used for ensuring that steel wires (dead wires and live wires) fall into the corresponding set positions of the braided strands in the steel wire braiding process, and preventing the steel wires of the left and right adjacent strands from being mixed up. The riding wheels are arranged at the top ends of the grids on the two sides of the supporting beam and are mainly used for supporting the active filaments in the course of outgoing spinning; during return spinning, the live yarn on the supporting wheel is guided into the grid, so that the spinning is continuously carried out back and forth. The adjusting pull rods are arranged on two sides of the strand forming frame and used for adjusting the height of the strand former and ensuring that the plain strand yarn type meets the design requirements in the cabling process.
Description
Technical Field
The invention relates to the field of construction of main cables of suspension bridges, in particular to a device for forming a main cable strand of a suspension bridge and a construction method thereof.
Background
Two construction processes are provided for erecting a main cable of a suspension bridge, one is a prefabricated parallel strand method (PPWS), namely, steel wires are prefabricated into parallel strands in a factory in advance, and then the parallel strands are pulled and erected on a catwalk by using a traction system; the other is the Air Spinning (AS) method, i.e. the main cable strand is formed by drawing steel wires back and forth at the bridge site using spinning wheels. The construction of the air spinning method (AS method) has a long history, and is still widely used abroad at present AS one of the main methods for constructing the main cable, and the main cable of the domestic suspension bridge is designed and constructed by adopting a prefabricated parallel cable strand method (PPWS method).
With the continuous development of economic construction in China, the infrastructure construction such AS bridge construction and the like has unprecedented development opportunities, particularly the demand of constructing a super-large span suspension bridge across rivers, seas and canyons is more and more outstanding, the main cable strand of the super-large span (more than 2000 m) suspension bridge is heavy, the requirement on required traction equipment is high, particularly the large-span suspension bridge is constructed in a mountain area where traffic is not available, the AS method can avoid the transportation problem caused by the overlarge weight of a single cable strand of the PPWS method, and the air spinning method (AS method) has unique advantages in the aspects of economy, transportation conditions and the like for the erection of the main cable of the super-large span suspension bridge and the suspension bridge which is difficult to transport in a bridge location area.
When the construction is carried out by adopting the air spinning method, a single main cable consists of dozens of strands, each strand consists of hundreds of steel wires, and the spinning wheel pulls the steel wires to reciprocate above the catwalk, so that the corresponding strands woven by the steel wires are smoothly formed, the wire type is consistent with that of an empty cable, the steel wires are prevented from being dispersed, mixed and falling on the catwalk in the cable weaving process, and a steel wire support frame is required to be arranged on the catwalk at certain intervals, and the invention is provided for solving the problems.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a suspension bridge main cable strand forming device and a construction method thereof, which are suitable for construction of a suspension bridge main cable by an Air Spinning (AS) method.
The technical scheme adopted by the invention is as follows:
a suspension bridge main cable strand forming device comprises
The bottom of the catwalk portal bottom cross beam is connected with a catwalk bearing rope;
the two upright posts are respectively connected to the top of the bottom beam of the catwalk portal frame at intervals vertically through a support frame;
the supporting cross beam is horizontally arranged between the two upright posts and can move up and down along the upright posts;
a plurality of grids are arranged and fixed on the supporting beam at uniform intervals;
the supporting wheels are connected to grids at the end parts of the two ends of the supporting beam through supporting wheel supporting members respectively and are positioned on the outer sides of the top ends of the grids;
the adjusting pull rods at least comprise two adjusting pull rods and are arranged on the outer sides of the two stand columns in parallel; the upper end of the adjusting pull rod is fixed on the upright post, and the lower end of the adjusting pull rod is fixed at the end part of the supporting beam; the height of the supporting beam is adjusted by adjusting the relative fixing position of the adjusting pull rod.
Specifically, the support frame includes at least by single A-frame of support frame bracing, support frame end longeron and support frame end crossbeam constitution, the A-frame be at least two, through a plurality of A-frame connections between every stand and the catwalk portal end crossbeam, connect through the flat connection at the bottom of the A-frame between a plurality of A-frame and form wholly.
Furthermore, two ends of the supporting beam are respectively and vertically fixed on the two upright posts through connecting sleeves.
Furthermore, the riding wheel supporting member at least comprises a riding wheel supporting beam and a connecting member, the riding wheel supporting beam is vertically fixed on the outer side of the top of the outermost grid, and the connecting member is fixed on the grid and is positioned below the riding wheel supporting beam; the riding wheel is fixed at the upper end of the riding wheel supporting beam, and a stiffening plate is arranged between the lower end of the riding wheel supporting beam and the connecting member.
Furthermore, the adjusting pull rod is of a full-thread structure, the upper end of the adjusting pull rod is connected to the upright post through an upper anchoring beam and nut threads, and the lower end of the adjusting pull rod is connected to the end part of the supporting beam through a lower anchoring beam and nut threads; the height of the supporting beam is adjusted by alternately loosening and fastening the nuts at the upper end and the lower end of the adjusting pull rod.
Furthermore, the number of the grids corresponds to the number of the main cable strand rows, and the net spacing between adjacent grids is equal to the diameter of each strand; the plurality of grids are inserted into the supporting cross beams according to the cable strand spacing and are fixedly connected with the supporting cross beams through bolts.
Furthermore, two supporting and limiting components used for penetrating through a catwalk sag adjusting rope are symmetrically arranged on two sides of the lower end of the supporting cross beam.
Preferably, the upright posts are fixedly connected with the bottom cross beam of the support frame through bolts.
The cable strand forming device is provided with a plurality of groups of cable strand forming devices, the plurality of groups of cable strand forming devices are arranged on the catwalk at intervals which are the same as the catwalk portal frame, and the height of each cable strand forming device is consistent with the cable strand line type.
A construction method of a suspension bridge main cable strand forming device comprises the following steps:
s1, firstly, the supporting beam, the connecting sleeves at the two ends of the supporting beam and the lower anchoring beam are assembled into a whole, and then the two supporting limiting members are symmetrically fixed at the lower end of the supporting beam;
s2, fixing the supporting beam between the two upright posts through the connecting sleeve, and respectively connecting the outer sides of the two upright posts with the anchoring beam; then, according to the design, the height of the supporting beam is preliminarily adjusted, the upper end of the adjusting pull rod is fixed on the upright post through the upper anchoring beam, and the lower end of the adjusting pull rod is fixed on the supporting beam through the lower anchoring beam;
s3, welding the tops of the two grids positioned at the two end parts of the supporting beam with the connecting piece, the supporting beam of the riding wheel and the stiffening plate respectively into a whole, inserting the bottoms of the grids into the supporting beam, and fastening the grids by nuts; fixing the riding wheel on a riding wheel supporting beam; then sequentially installing the rest grids according to the cable strand spacing;
s4, assembling the support frame inclined strut, the support frame bottom longitudinal beam and the support frame bottom cross beam into a triangular support, and assembling the support frame upright post and the catwalk portal bottom cross beam into a whole through a plurality of triangular supports;
s5, the assembled strand forming devices and the catwalk portal frame are placed to a designed installation position group by group through portal bearing ropes by means of a winch, the height of a supporting beam is accurately adjusted according to the designed elevation before main cables are woven, and the catwalk sag adjusting ropes penetrate through supporting limiting members below the supporting beams in the strand forming devices;
s6, sleeving the steel wire of the main cable into the spinning wheel, drawing the spinning wheel from one bank to the other bank to draw back and forth through the drawing system, and moving the spinning wheel to the way: the live wire falls on the supporting wheel to be supported, and the dead wire falls in the corresponding cable strand grid groove; and (3) returning of the spinning wheel: the movable filaments fall into the corresponding strand grid grooves, and the spinning is repeated in cycles to finish the formation of the corresponding strand braided cable.
By adopting the technical scheme, the invention has the advantages that:
1) the connecting sleeves at the two ends of the supporting beam can freely slide up and down on the upright posts, the height of the supporting beam can be accurately adjusted, and the linear shape of the cable strands is effectively ensured to meet the design requirement;
2) the grid cable strands are transversely isolated, so that steel wires (dead wires and live wires) can fall into corresponding cable strand positions in the spinning process, and the steel wires are arranged in the grid area according to design requirements and are not mixed with other cable strand steel wires; the riding wheel is used for supporting the live filaments in the process of off-stroke spinning construction, and the live filaments on the riding wheel are guided into the grids during return-stroke spinning so as to ensure that the spinning is continuously carried out back and forth;
3) the cable strand forming device is integrally connected with the catwalk through the bottom cross beam of the catwalk portal frame, the winding amount under the catwalk exceeds an allowable value along with the increase of the spinning quantity, the cable strand forming device can drive the catwalk to be adjusted upwards together by tensioning the sag adjusting ropes penetrating through the bottoms of the supporting cross beams of all groups, the downward winding of the catwalk is controlled, therefore, the catwalk line type is ensured to be parallel to the designed main cable line type, the deviation of the actual stress and the design value of the cable strand steel wire in a bridge forming state after the weaving is finished meets the design requirement, and the spinning quality of the cable strand is ensured.
4) The strand forming device has the advantages of simple and convenient height adjustment, high precision, simple structure, convenient assembly and disassembly and the like when the construction of erecting the main cable of the suspension bridge by adopting an Air Spinning (AS) method, and has easy guarantee of the construction quality and the line type of the strand and strong practicability.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to clearly understand the technical solutions of the present invention and to implement the technical solutions according to the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
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 an elevational view of a strand forming apparatus;
FIG. 2 is a plan view of the strand forming apparatus;
FIG. 3 is a side view of the strand forming apparatus;
description of reference numerals:
1. a column; 2. a support beam; 3. a bottom beam of the catwalk portal frame; 4. a support frame diagonal brace; 5. a support frame bottom longitudinal beam; 6 supporting the frame bottom beam; 7. a grid; 8. a riding wheel; 9. a riding wheel support beam; 10. a stiffening plate; 11. a connecting member; 12. an upper anchoring beam; 13. a lower anchoring beam; 14. adjusting the pull rod; 15. a support limit member; 16. connecting a sleeve; 17. catwalk bearing rope.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The first embodiment is as follows:
a first embodiment of the present invention relates to a suspension bridge main cable strand forming device, and with reference to fig. 1, the device includes:
the bottom of the cat-way portal frame bottom cross beam 3 is connected with a cat-way bearing rope 17;
the device comprises upright columns 1, wherein the upright columns 1 at least comprise two, and the two upright columns 1 are respectively connected to the top of a bottom cross beam 3 of a catwalk portal at intervals vertically through a support frame;
the supporting beam 2 is horizontally arranged between the two upright posts 1 and can move up and down along the upright posts 1;
a plurality of grids 7 are arranged, and the grids 7 are uniformly fixed on the supporting beam 2 at intervals;
the supporting rollers 8 are at least two, are respectively connected to the grids 7 at the end parts of the two ends of the supporting beam 2 through supporting members of the supporting rollers, and are positioned on the outer sides of the top ends of the grids 7;
the adjusting pull rods 14 at least comprise two adjusting pull rods 14 which are arranged on the outer sides of the two upright posts 1 in parallel; the upper end of the adjusting pull rod 14 is fixed on the upright post 1, and the lower end of the adjusting pull rod 14 is fixed at the end part of the supporting beam 2; the height of the supporting cross beam 2 is adjusted by adjusting the relative fixing position of the adjusting pull rod 14.
According to the invention, the upright posts 1 and the catwalk portal bottom cross beam 3 are fixedly connected through bolts, and the catwalk portal bottom cross beam 3 and the catwalk bearing rope are fixedly connected, so that steel wire load borne by the strand forming device is transmitted to the catwalk through the catwalk portal bottom cross beam. The grid is mainly used for ensuring that steel wires (dead wires and live wires) fall into the corresponding set positions of the braided cable strands in the steel wire braiding process, and preventing the steel wires of the left and right adjacent cable strands from being mixed. The riding wheel is arranged at the top end of the side grating and is mainly used for supporting the live filaments in the course of outgoing spinning. The adjusting pull rods are arranged on two sides of the strand forming frame and used for adjusting the height of the strand former and ensuring that the plain strand yarn type meets the design requirements in the cabling process. This strand forming device sets up according to the same interval with the catwalk portal on the catwalk, sets up the height and accords with the strand line type, and installation, regulation convenience, and the precision is high, have guaranteed that suspension bridge main push-towing rope adopts the air spinning method strand to weave the cable quality.
Example two:
on the basis of the first embodiment, further, as shown in fig. 2 and fig. 3, the support frame at least comprises a single triangular support composed of a support frame inclined strut 4, a support frame bottom longitudinal beam 5 and a support frame bottom cross beam 6, the number of the triangular supports is at least two, each upright post 1 is connected with the catwalk portal bottom cross beam 3 through a plurality of triangular supports, and the plurality of triangular supports are connected with each other through a triangular support bottom parallel connection to form a whole.
Further, the upright posts 1 are fixedly connected with the support frame bottom cross beam 6 through bolts. The two ends of the supporting beam 2 are respectively and vertically fixed on the two upright posts through the connecting sleeves 16, and the connecting sleeves at the two ends of the supporting beam can freely slide up and down on the upright posts, so that the height of the supporting beam can be accurately adjusted, and the linear shape of the cable strands can be effectively ensured to meet the design requirements.
Furthermore, the adjusting pull rod 14 is of a full-thread structure, the upper end of the adjusting pull rod 14 is connected to the upright post 1 through the upper anchoring beam 12 and the nut threads, and the lower end of the adjusting pull rod 14 is connected to the end part of the supporting cross beam 2 through the lower anchoring beam 13 and the nut threads; the height of the supporting beam 2 is adjusted by alternately loosening and tightening nuts at the upper and lower ends of the adjusting tie 14.
Example three:
on the basis of the above embodiment, further, as shown in fig. 1, the riding wheel supporting member at least includes a riding wheel supporting beam 9 and a connecting member 11, the riding wheel supporting beam 9 is vertically fixed on the top outer side of the outermost grid 7, and the connecting member 11 is fixed on the grid 7 and is located below the riding wheel supporting beam 9; the riding wheel 8 is fixed at the upper end of a riding wheel supporting beam 9, and a stiffening plate 10 is arranged between the lower end of the riding wheel supporting beam 9 and the connecting component 11.
It is worth mentioning that the number of the grids 7 corresponds to the number of the main cable strand rows, and the net spacing between the adjacent grids 7 is equal to the diameter of the main cable strands. Further, the grids 7 are inserted into the supporting beams 2 at a pitch of the strands and are fixedly connected to the supporting beams 2 by bolts. The main function of the grating 7 is to ensure that steel wires (dead wires and live wires) fall into the corresponding set positions of the braided strands in the steel wire braiding process, so as to prevent the steel wires of the left and right adjacent strands from being mixed.
Example four:
on the basis of the embodiment, furthermore, the strand forming devices are provided with a plurality of groups, the plurality of groups of strand forming devices are arranged on the catwalk at intervals which are the same as the catwalk portal frame, and the heights of the strand forming devices are consistent with the strand line type. The height of each strand forming device (namely the height of the supporting beam) on the catwalk is adjusted through the adjusting pull rod 14 to meet the requirement of rechecking strand line type.
The cable strand forming device is integrally connected with the catwalk through the bottom cross beam of the catwalk portal frame, the winding amount under the catwalk exceeds an allowable value along with the increase of the spinning quantity, the cable strand forming device can drive the catwalk to be adjusted upwards together by tensioning the sag adjusting ropes penetrating through the bottoms of the supporting cross beams of all groups, the downward winding of the catwalk is controlled, therefore, the catwalk line type is ensured to be parallel to the designed main cable line type, the deviation of the actual stress and the design value of the cable strand steel wire in a bridge forming state after the weaving is finished meets the design requirement, and the spinning quality of the cable strand is ensured.
Example five:
a construction method of a suspension bridge main cable strand forming device comprises the following steps:
s1, firstly, the supporting beam 2, the connecting sleeves 16 at the two ends of the supporting beam and the lower anchoring beam 13 are assembled into a whole, and then the two supporting and limiting members 15 are symmetrically fixed at the lower end of the supporting beam 2;
s2, fixing the supporting beam 2 between the two upright posts 1 through the connecting sleeve 16, and respectively connecting the outer sides of the two upright posts 1 with the anchoring beam 12; then, according to the design, the height of the supporting cross beam 2 is preliminarily adjusted, the upper end of the adjusting pull rod 14 is fixed on the upright post 1 through the upper anchoring beam 12, and the lower end of the adjusting pull rod 14 is fixed on the supporting cross beam 2 through the lower anchoring beam 13;
s3, welding the tops of two grids 7 positioned at the two end parts of the supporting beam 2 with the connecting piece 11, the riding wheel supporting beam 9 and the stiffening plate 10 respectively to form a whole, inserting the bottoms of the grids 7 into the supporting beam 2, and fastening the grids with nuts; fixing the riding wheel 8 on a riding wheel supporting beam 9; then sequentially installing the rest grids 7 according to the cable strand spacing;
s4, assembling the support frame inclined strut 4, the support frame bottom longitudinal beam 5 and the support frame bottom cross beam 6 into a triangular support, and assembling the support frame upright post 1 and the catwalk portal bottom cross beam 3 into a whole through a plurality of triangular supports;
s5, the assembled strand forming devices and the catwalk portal frame are placed to a designed installation position group by group through portal bearing ropes by means of a winch, the height of the supporting cross beam 2 is accurately adjusted according to the designed elevation before main cables are braided, and the catwalk sag adjusting ropes penetrate through supporting limiting members 15 below the supporting cross beams 2 in each group of strand forming devices;
s6, sleeving the steel wire of the main cable into the spinning wheel, drawing the spinning wheel from one bank to the other bank to draw back and forth through the drawing system, and moving the spinning wheel to the way: the live wire falls on the riding wheel 8 to be supported, and the dead wire falls in the groove of the corresponding strand grating 7; and (3) returning of the spinning wheel: the active filaments fall into the corresponding strand grating 7 groove, and the spinning is repeated in cycles to finish the corresponding strand cable weaving and forming.
Because stand 1 and catwalk are through cat way portal frame bottom crossbeam 3 and are linked as an organic whole, the common atress of strand forming device and catwalk, along with the increase of spinning quantity, receive the effect of partial gravity load of steel wire, support and catwalk wind down together, for guaranteeing that the cable strand steel wire stress after the bridge formation is controlled in the design standard allowed range with design stress deviation, need guarantee catwalk line type and main cable empty cable line type unanimity at the steel wire stranding in-process, need control catwalk down the winding volume in the design allowed range, catwalk down the winding volume and exceed the allowed range and need pass the adjustment catwalk on the sag adjustment rope of supporting beam bottom support stop member 15 through the tractive, make its down the winding volume in the allowed range.
In summary, the suspension bridge main cable strand forming device applicable to suspension bridge main cable Air Spinning (AS) method construction provided by the invention has the advantages that: the grating cable strands are transversely isolated, so that steel wires (dead wires and live wires) can fall into corresponding cable strand positions in the spinning process, and the steel wires are arranged in the grating area according to design requirements and are not mixed with other cable strand steel wires; the top ends of the grids on the two sides are provided with supporting wheels which support the live filaments during the course of spinning, so that the smooth spinning construction is ensured, and the live filaments on the supporting wheels are guided into the grids during the return spinning, so that the continuous back and forth spinning is ensured; the height of the supporting strand beam is accurately adjusted by adjusting the pull rod 14 to ensure that the strand line type meets the design requirement; the number and the spacing of the strand forming structures are the same as those of catwalk portal frames on the catwalk, the strand forming structures and the catwalk are connected into a whole, the downward winding amount of the catwalk in the spinning and cabling process is controlled within an allowable range through a catwalk sag adjusting rope penetrating through the lower portion of a beam of each strand forming structure, and the line type and the stress difference after the main cable is formed are kept to meet the design requirements.
Parts of the above embodiments that are not specifically described are well known components and conventional structures or conventional means in the art and will not be described in detail herein.
In the case of no conflict, a person skilled in the art may combine the related technical features in the above examples according to actual situations to achieve corresponding technical effects, and details of various combining situations are not described herein.
The foregoing is illustrative of the preferred embodiments of the present invention, and the present invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Any simple modification, equivalent change and modification of the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention. While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is within the scope of the claims.
Claims (10)
1. The utility model provides a suspension bridge main push-towing rope strand forming device which characterized in that: comprises that
The bottom of the cat-way portal frame bottom cross beam (3) is connected with a cat-way bearing rope (17);
the device comprises at least two upright posts (1), wherein the two upright posts (1) are respectively connected to the top of a bottom cross beam (3) of the catwalk portal through a support frame at intervals;
the supporting cross beam (2) is horizontally arranged between the two upright posts (1) and can move up and down along the upright posts (1);
a plurality of grids (7), wherein the grids (7) are uniformly fixed on the supporting beam (2) at intervals;
the supporting rollers (8) are at least two, are respectively connected to the grids (7) at the end parts of the two ends of the supporting beam (2) through supporting members of the supporting rollers, and are positioned on the outer sides of the top ends of the grids (7);
the adjusting pull rods (14) at least comprise two adjusting pull rods (14) which are arranged on the outer sides of the two upright posts (1) in parallel; the upper end of the adjusting pull rod (14) is fixed on the upright post (1), and the lower end of the adjusting pull rod (14) is fixed at the end part of the supporting cross beam (2); the height of the supporting beam (2) is adjusted by adjusting the relative fixing position of the adjusting pull rod (14).
2. A suspension bridge main cable strand forming device according to claim 1, wherein: the support frame includes at least by support frame bracing (4), support frame end longeron (5) and support frame bottom beam (6) constitute single A-frame, A-frame is at least two, is connected through a plurality of A-frames between every stand (1) and catwalk portal bottom beam (3), connects through A-frame end tie between a plurality of A-frames and forms wholly.
3. A suspension bridge main cable strand forming device according to claim 1, wherein: two ends of the supporting beam (2) are respectively and vertically fixed on the two upright posts (1) through connecting sleeves (16).
4. A suspension bridge main cable strand forming device according to claim 1, wherein: the riding wheel supporting member at least comprises a riding wheel supporting beam (9) and a connecting member (11), the riding wheel supporting beam (9) is vertically fixed on the outer side of the top of the outermost grid (7), and the connecting member (11) is fixed on the grid (7) and is positioned below the riding wheel supporting beam (9); the riding wheel (8) is fixed at the upper end of the riding wheel supporting beam (9), and a stiffening plate (10) is arranged between the lower end of the riding wheel supporting beam (9) and the connecting component (11).
5. A suspension bridge main cable strand forming device according to claim 1, wherein: the adjusting pull rod (14) is of a full-thread structure, the upper end of the adjusting pull rod (14) is connected to the upright post (1) through the upper anchoring beam (12) and the nut threads, and the lower end of the adjusting pull rod (14) is connected to the end part of the supporting cross beam (2) through the lower anchoring beam (13) and the nut threads; the height of the supporting beam (2) is adjusted by alternately loosening and fastening nuts at the upper end and the lower end of the adjusting pull rod (14).
6. A suspension bridge main cable strand forming device according to claim 1, wherein: the number of the grids (7) corresponds to the number of the main cable strand rows, and the clear space between every two adjacent grids (7) is equal to the diameter of each strand; the grids (7) are inserted into the supporting beams (2) according to the cable strand spacing and are fixedly connected with the supporting beams through bolts.
7. A suspension bridge main cable strand forming device according to claim 1, wherein: two supporting and limiting components (15) used for penetrating through a catwalk verticality adjusting rope are symmetrically arranged on two sides of the lower end of the supporting cross beam (2).
8. A suspension bridge main cable strand forming device according to claim 1, wherein: the upright posts (1) are fixedly connected with the bottom cross beam (6) of the support frame through bolts.
9. A suspension bridge main cable strand forming device according to any one of claims 1 to 8, wherein: the cable strand forming device is provided with a plurality of groups of cable strand forming devices, the plurality of groups of cable strand forming devices are arranged on the catwalk at intervals which are the same as the catwalk portal frame, and the height of each cable strand forming device is consistent with the cable strand line type.
10. The construction method of the main cable strand forming device of the suspension bridge as claimed in any one of claims 1 to 9, comprising the steps of:
s1, firstly, the supporting beam (2), the connecting sleeves (16) at the two ends of the supporting beam and the lower anchoring beam (13) are assembled into a whole, and then the two supporting and limiting members (15) are symmetrically fixed at the lower end of the supporting beam (2);
s2, fixing the supporting beam (2) between the two upright posts (1) through the connecting sleeve (16), and respectively connecting the outer sides of the two upright posts (1) with the anchoring beam (12); then, according to the design, the height of the supporting cross beam (2) is preliminarily adjusted, the upper end of the adjusting pull rod (14) is fixed on the upright post (1) through the upper anchoring beam (12), and the lower end of the adjusting pull rod (14) is fixed on the supporting cross beam (2) through the lower anchoring beam (13);
s3, welding the tops of two grids (7) positioned at the end parts of the two ends of the supporting beam (2) with the connecting piece (11), the supporting wheel supporting beam (9) and the stiffening plate (10) into a whole respectively, inserting the bottoms of the grids (7) into the supporting beam (2), and fastening the grids with nuts; fixing a riding wheel (8) on a riding wheel supporting beam (9); then sequentially installing the rest grids (7) according to the cable strand spacing;
s4, assembling the support frame inclined strut (4), the support frame bottom longitudinal beam (5) and the support frame bottom cross beam (6) into a triangular support, and assembling the support frame upright post (1) and the catwalk portal bottom cross beam (3) into a whole through a plurality of triangular supports;
s5, the assembled strand forming devices and the catwalk portal frame are placed to a designed installation position group by group through portal bearing ropes by means of a winch, the height of a supporting cross beam (2) is accurately adjusted according to the designed elevation before main cables are braided, and the catwalk sag adjusting ropes penetrate through supporting limiting members (15) below the supporting cross beam (2) in each group of strand forming devices;
s6, sleeving the steel wire of the main cable into the spinning wheel, drawing the spinning wheel from one bank to the other bank to draw back and forth through the drawing system, and moving the spinning wheel to the way: the live wire falls on the supporting wheel (8) for supporting, and the dead wire falls in the groove of the corresponding strand grating (7); and (3) returning of the spinning wheel: the active filaments fall into the grooves of the corresponding strand grids (7), and the spinning is repeated in cycles to finish the formation of the corresponding strand braided cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266627.7A CN111424548B (en) | 2020-04-07 | Main cable strand forming device of suspension bridge and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010266627.7A CN111424548B (en) | 2020-04-07 | Main cable strand forming device of suspension bridge and construction method thereof |
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| Publication Number | Publication Date |
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| CN111424548A true CN111424548A (en) | 2020-07-17 |
| CN111424548B CN111424548B (en) | 2024-05-31 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195784A (en) * | 2020-09-15 | 2021-01-08 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN112227225A (en) * | 2020-11-23 | 2021-01-15 | 中交二公局第二工程有限公司 | Catwalk sag adjusting device for erecting main cable based on suspension bridge air spinning method and construction method of catwalk sag adjusting device |
| CN113718940A (en) * | 2021-09-06 | 2021-11-30 | 中建一局集团建设发展有限公司 | Structure and method for adding large-bearing-capacity Weiya support conversion system to existing building |
| CN114032772A (en) * | 2021-10-29 | 2022-02-11 | 成都林立宇坤勘察设计有限公司 | Method for designing integrated node of main cable former unit erected by suspension bridge AS method |
| CN115162200A (en) * | 2022-08-23 | 2022-10-11 | 广东湾区交通建设投资有限公司 | Suspension bridge main cable strand erection and position restraining method |
| CN112227225B (en) * | 2020-11-23 | 2024-05-31 | 中交二公局第二工程有限公司 | Catwalk sag adjustment device for erecting main cable based on suspension bridge air spinning method and construction method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1441921A (en) * | 1972-08-04 | 1976-07-07 | Cleveland Bridge And Eng | Machine for reeling and unreeling wire |
| CN1864886A (en) * | 2005-05-18 | 2006-11-22 | 上海申佳金属制品有限公司 | Manufacturing method of zinc-coated steel wire for main rope of suspension bridge |
| CN103850184A (en) * | 2014-03-19 | 2014-06-11 | 中交一公局第一工程有限公司 | Suspension bridge main cable erecting device |
| CN203782578U (en) * | 2014-03-19 | 2014-08-20 | 中交一公局第一工程有限公司 | Foldable support pulley device for towing catwalk top by main cable strand of suspension bridge |
| CN108487039A (en) * | 2018-02-28 | 2018-09-04 | 济南城建集团有限公司 | Self-anchored suspension bridge and its cat road separate type construction method |
| CN110939069A (en) * | 2019-12-11 | 2020-03-31 | 湖北省路桥集团有限公司 | Construction method of suspension bridge catwalk |
| CN212477419U (en) * | 2020-04-07 | 2021-02-05 | 中交二公局第二工程有限公司 | Suspension bridge main push-towing rope strand forming device |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1441921A (en) * | 1972-08-04 | 1976-07-07 | Cleveland Bridge And Eng | Machine for reeling and unreeling wire |
| CN1864886A (en) * | 2005-05-18 | 2006-11-22 | 上海申佳金属制品有限公司 | Manufacturing method of zinc-coated steel wire for main rope of suspension bridge |
| CN103850184A (en) * | 2014-03-19 | 2014-06-11 | 中交一公局第一工程有限公司 | Suspension bridge main cable erecting device |
| CN203782578U (en) * | 2014-03-19 | 2014-08-20 | 中交一公局第一工程有限公司 | Foldable support pulley device for towing catwalk top by main cable strand of suspension bridge |
| CN108487039A (en) * | 2018-02-28 | 2018-09-04 | 济南城建集团有限公司 | Self-anchored suspension bridge and its cat road separate type construction method |
| CN110939069A (en) * | 2019-12-11 | 2020-03-31 | 湖北省路桥集团有限公司 | Construction method of suspension bridge catwalk |
| CN212477419U (en) * | 2020-04-07 | 2021-02-05 | 中交二公局第二工程有限公司 | Suspension bridge main push-towing rope strand forming device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195784A (en) * | 2020-09-15 | 2021-01-08 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN112195784B (en) * | 2020-09-15 | 2022-06-17 | 中交第二公路工程局有限公司 | Catwalk sag adjustment system and adjustment method for erecting main cable by adopting air spinning method |
| CN112227225A (en) * | 2020-11-23 | 2021-01-15 | 中交二公局第二工程有限公司 | Catwalk sag adjusting device for erecting main cable based on suspension bridge air spinning method and construction method of catwalk sag adjusting device |
| CN112227225B (en) * | 2020-11-23 | 2024-05-31 | 中交二公局第二工程有限公司 | Catwalk sag adjustment device for erecting main cable based on suspension bridge air spinning method and construction method thereof |
| CN113718940A (en) * | 2021-09-06 | 2021-11-30 | 中建一局集团建设发展有限公司 | Structure and method for adding large-bearing-capacity Weiya support conversion system to existing building |
| CN114032772A (en) * | 2021-10-29 | 2022-02-11 | 成都林立宇坤勘察设计有限公司 | Method for designing integrated node of main cable former unit erected by suspension bridge AS method |
| CN114032772B (en) * | 2021-10-29 | 2024-04-26 | 成都林立宇坤勘察设计有限公司 | Method for designing comprehensive nodes of main cable former unit erected by suspension bridge AS method |
| CN115162200A (en) * | 2022-08-23 | 2022-10-11 | 广东湾区交通建设投资有限公司 | Suspension bridge main cable strand erection and position restraining method |
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