Tied arch bridge hanger rod capable of optically detecting corrosion of steel wire and processing method thereof
阅读说明：本技术 一种可光学检测钢丝锈蚀的系杆拱桥吊杆及其加工方法 (Tied arch bridge hanger rod capable of optically detecting corrosion of steel wire and processing method thereof ) 是由 项宏亮 徐勋倩 付尚静 陈亮 吴高杰 刘永刚 顾钰雯 于 2019-11-20 设计创作，主要内容包括：本发明提供一种可光学检测钢丝锈蚀的系杆拱桥吊杆,包括吊杆锚固结构和索体,吊杆锚固结构包括吊杆锚杯、与吊杆锚杯固定连接的吊杆密封筒,索体包括若干平行钢丝构成的钢丝束；钢丝束的外侧裹覆有缠包带,缠包带外侧套接有一内层护套,内层护套在平行于钢丝束的方向上环状均布有六个检测通道,本发明还提供一种根据权利要求1所述的可光学检测钢丝锈蚀的系杆拱桥吊杆的加工方法,包括以下步骤：(1)采用透明聚酯带对若干平行钢丝构成的钢丝束进行缠包；(2)采用热挤塑成型工艺形成吊杆的透明内层护套,采用高密度聚乙烯热挤塑成型吊杆外层护套；本发明采用光学检测方法对吊杆内是否生锈情况进行检测,简单、直观、准确。(The invention provides a tied arch bridge suspender capable of optically detecting corrosion of a steel wire, which comprises a suspender anchoring structure and a cable body, wherein the suspender anchoring structure comprises a suspender anchoring cup and a suspender sealing cylinder fixedly connected with the suspender anchoring cup, and the cable body comprises a steel wire bundle formed by a plurality of parallel steel wires; the invention also provides a processing method of the tied arch bridge suspender capable of optically detecting the corrosion of the steel wire, which comprises the following steps of: (1) winding a steel wire bundle consisting of a plurality of parallel steel wires by adopting a transparent polyester belt; (2) forming a transparent inner layer sheath of the suspender by adopting a hot extrusion molding process, and forming an outer layer sheath of the suspender by adopting high-density polyethylene hot extrusion molding; the invention adopts an optical detection method to detect whether the hanger rod is rusted or not, and is simple, intuitive and accurate.)
1. A tied arch bridge suspender capable of optically detecting corrosion of a steel wire comprises a cable body and two suspender anchoring structures arranged at two ends of the cable body, wherein the two suspender anchoring structures are fixedly connected with an arch bridge; the suspension rod anchoring structure is characterized by comprising suspension rod anchor cups and a suspension rod sealing cylinder, wherein the suspension rod anchor cups are mutually connected, the suspension rod sealing cylinder is fixedly connected with the suspension rod anchor cups, an anchor plate is arranged at one end, away from the suspension rod sealing cylinder, of each suspension rod anchor cup, an anchor cup end part sealing plate is arranged at the outermost side end of each suspension rod anchor cup, and a devillicate limiting plate is arranged at one side, close to each suspension rod anchor cup, of each suspension rod sealing cylinder; a metal sealing ring and a rubber ring are arranged on one side of the suspender sealing cylinder, which is far away from the suspender anchor cup; the cable body comprises a steel wire bundle formed by a plurality of parallel steel wires; the outer side of the steel wire bundle is wrapped with a wrapping belt, the outer side of the wrapping belt is sleeved with an inner layer sheath, six detection channels are annularly and uniformly distributed on the inner layer sheath in a direction parallel to the steel wire bundle, the outer side of the inner layer sheath is sleeved with an outer layer sheath, a plurality of steel wire positioning holes for fixing a plurality of parallel steel wires of the steel wire bundle are formed in the anchor plate, six first oblique circular holes are annularly and uniformly distributed on the periphery of the plurality of steel wire positioning holes in the anchor plate, steel wire through holes for the steel wires of the steel wire bundle to respectively pass through are formed in the wire dividing limiting plate, six second oblique circular holes are annularly and uniformly distributed on the outer side of the steel wire through holes in the wire dividing limiting plate, and the six second oblique circular holes correspond to the positions of the six detection; six transparent tubes are arranged in the hanger rod anchor cup in a direction parallel to the direction of the steel wire, one ends of the transparent tubes are inserted into the second oblique round holes, and the other ends of the transparent tubes penetrate through the first oblique round holes in the hanger rod anchor cup and extend to the outer side of the anchor plate.
2. The tied arch bridge suspender capable of optically detecting the corrosion of the steel wire as claimed in claim 1, wherein the wrapping band is a transparent polyester band.
3. The tied arch bridge suspender capable of optically detecting corrosion of the steel wire as claimed in claim 1, wherein six of said first oblique circular holes and six of said second oblique circular holes are respectively formed into six groups of through holes, and the first oblique circular holes and the second oblique circular holes in each group of through holes are in the same vertical plane.
4. The tied arch bridge suspender capable of optically detecting the corrosion of the steel wire as claimed in claim 1, wherein the inner layer sheath is made of transparent modified polypropylene, and the diameter of the detection channel is 8 mm; the transparent tube is made of polypropylene.
5. The tied arch bridge suspender capable of optically detecting corrosion of the steel wire as claimed in claim 1, wherein each of the first and second inclined circular holes is an inclined circular hole, and the inclination angle of the first and second inclined circular holes is adapted to the inclination angle formed between the first and second inclined circular holes in each set of through holes.
6. The tied arch bridge hanger rod capable of optically detecting the corrosion of the steel wire according to claim 3, wherein the diameter of the first oblique circular hole and the diameter of the second oblique circular hole are 10.5 mm.
7. The tied arch bridge suspender capable of optically detecting the corrosion of the steel wire as claimed in claim 1, wherein the inner side of the suspender anchor cup is provided with a truncated cone-shaped cavity structure, and the large end of the cavity structure is arranged on the side far away from the suspender sealing cylinder; the anchor plate is a circular truncated cone-shaped structure with holes matched with the inner wall of the suspender anchor cup, and the large end of the anchor plate is arranged on one side far away from the suspender sealing cylinder.
8. The tied arch bridge suspender capable of optically detecting the corrosion of the steel wire as claimed in claim 1, wherein the outer sheath and the wire-dividing limiting plate are fixedly connected through a rubber gasket and a stainless steel hoop.
9. A method for processing a tied arch bridge hanger bar capable of optically detecting the corrosion of a steel wire according to claim 1, which comprises the following steps:
(1) winding a steel wire bundle consisting of a plurality of parallel steel wires by adopting a transparent polyester belt;
(2) transferring the steel wire bundle wrapped in the step (1) to an extrusion molding machine head, delivering hot plastic materials from the extrusion molding machine, and wrapping the hot plastic materials on the outer side of the steel wire bundle wrapped in the step (1) to form an inner layer sheath and an outer layer sheath; 6 detection channels are generated on the inner layer sheath in the extrusion molding process;
(3) processing a suspender anchor cup and a suspender sealing cylinder; the connecting ends of the suspender anchor cup and the suspender sealing cylinder are respectively provided with an internal thread and an external thread which are matched with each other, and the suspender anchor cup and the suspender sealing cylinder are fixedly connected through the internal thread and the external thread; processing an anchor plate and a wire dividing limiting plate, wherein the corresponding positions of the anchor plate and the wire dividing limiting plate are respectively provided with a first inclined round hole and a second inclined round hole which are uniformly distributed and have the diameter of 10.5 mm;
(4) the steel wire bundle of the cable body passes through the suspender sealing cylinder and the suspender anchor cup, and the right end of the suspender anchor cup is exposed, and is fixedly connected with the wire separating limiting plate by adopting a rubber gasket and a stainless steel hoop;
(5) dividing the steel wire bundle of the cable body through the wire dividing limiting plate, and penetrating through the corresponding steel wire positioning hole on the anchor plate;
(6) putting each steel wire pier head of the steel wire bundle on the right end face of the anchor plate;
(7) transparent tubes are inserted into the first oblique round holes and the second oblique round holes corresponding to the anchor plate and the wire separating limiting plate;
(8) pulling the steel wire bundle to relatively move left, and tightly pushing the anchor plate and the hanger rod anchor cup;
(9) installing a rubber ring and a metal sealing ring of a sealing cylinder;
(10) the end sealing plate of the anchor cup is fixedly arranged at the rightmost side of the anchor cup of the suspender.
10. The method for processing the tied arch bridge suspender capable of optically detecting the corrosion of the steel wire as claimed in claim 1, wherein a transparent pipe end protective sleeve is sleeved on one end of the transparent pipe outside the anchor plate.
Technical Field
The invention belongs to the technical field of bridges, and particularly relates to a tied arch bridge suspender capable of optically detecting corrosion of a steel wire and a production method thereof.
Background
The tied arch bridge has the advantages of definite stress, mature construction process and better overall economy of engineering, and is widely applied to large and medium bridges in China, particularly bridges crossing navigation channels. The suspender is used as a force transmission component between a bridge deck system and an arch rib in the tied arch bridge and has extremely important significance for the structural safety of the tied arch bridge, but in recent years, a plurality of accidents of partial or integral collapse of the through arch bridge caused by corrosion failure of the suspender occur, the reasons include design defects and defects in construction, and a large part of reasons are the undetectable property of corrosion conditions inside the suspender in the operation period of the bridge.
The existing tied arch bridge suspender is mostly made of finished suspender produced by manufacturers, an internal parallel steel wire is mostly used as a suspender stress component, as shown in figures 1A-1D, a polyester belt is wound outside the parallel steel wire, an internal and external two layers of extrusion molding High Density Polyethylene (HDPE) colored sheath are arranged outside the polyester belt to be used as cable body protection, two ends of the suspender are provided with a sealing cylinder and an anchor cup, the parallel steel wire is divided into wires in the anchor cup and then anchored at a pier head on an anchor plate, and the suspender is anchored at an arch rib above the tied arch bridge and a tie beam or a cross beam below the tied arch bridge through a nut outside the anchor cup after installation and tensioning.
Due to the sealing performance of the hanger rod structure and the opacity of the polyester band outside the parallel steel wires and the HDPE sheath, the corrosion condition of the parallel steel wires in the hanger rod of the in-service bridge cannot be detected. The existing method for detecting corrosion of a tied arch bridge suspender generally comprises the steps of opening an upper anchor head and a lower anchor head of the suspender, indirectly judging the corrosion condition of the suspender steel wire from the appearances of the anchor head of the suspender and a steel wire pier head, whether the lower anchor head of the suspender has a water leakage phenomenon and the like, and the judgment method of substituting a point for a line and externally deducing the inside has great subjectivity and low reliability of a judgment result.
Disclosure of Invention
The invention aims to solve the technical problem of providing a tied arch bridge suspender capable of optically detecting steel wire corrosion and a processing method thereof, so as to solve the problem of non-detectability of the steel wire corrosion condition in the conventional suspender structure.
In order to solve the above technical problems, an embodiment of the present invention provides a tied arch bridge boom capable of optically detecting corrosion of a steel wire, including a cable body and two boom anchoring structures disposed at two ends of the cable body, wherein the two boom anchoring structures are fixedly connected to an arch bridge; the suspension rod anchoring structure is characterized by comprising suspension rod anchor cups and a suspension rod sealing cylinder, wherein the suspension rod anchor cups are mutually connected, the suspension rod sealing cylinder is fixedly connected with the suspension rod anchor cups, an anchor plate is arranged at one end, away from the suspension rod sealing cylinder, of each suspension rod anchor cup, an anchor cup end part sealing plate is arranged at the outermost side end of each suspension rod anchor cup, and a devillicate limiting plate is arranged at one side, close to each suspension rod anchor cup, of each suspension rod sealing cylinder; a metal sealing ring and a rubber ring are arranged on one side of the suspender sealing cylinder, which is far away from the suspender anchor cup; the cable body comprises a steel wire bundle formed by a plurality of parallel steel wires; the outer side of the steel wire bundle is wrapped with a wrapping belt, the outer side of the wrapping belt is sleeved with an inner layer sheath, six detection channels are annularly and uniformly distributed on the inner layer sheath in a direction parallel to the steel wire bundle, the outer side of the inner layer sheath is sleeved with an outer layer sheath, a plurality of steel wire positioning holes for fixing a plurality of parallel steel wires of the steel wire bundle are formed in the anchor plate, six first oblique circular holes are annularly and uniformly distributed on the periphery of the plurality of steel wire positioning holes in the anchor plate, steel wire through holes for the steel wires of the steel wire bundle to respectively pass through are formed in the wire dividing limiting plate, six second oblique circular holes are annularly and uniformly distributed on the outer side of the steel wire through holes in the wire dividing limiting plate, and the six second oblique circular holes correspond to the positions of the six detection; six transparent tubes are arranged in the hanger rod anchor cup in a direction parallel to the direction of the steel wire, one ends of the transparent tubes are inserted into the second oblique round holes, and the other ends of the transparent tubes penetrate through the first oblique round holes in the hanger rod anchor cup and extend to the outer side of the anchor plate.
Further, the wrapping tape is a transparent polyester tape.
Furthermore, six first oblique round holes and six second oblique round holes form six groups of through holes respectively, and the first oblique round holes and the second round holes in each group of through holes are located in the same vertical plane.
Further, the inner layer sheath is made of transparent modified polypropylene, and the diameter of the detection channel is 8 mm; the transparent tube is made of polypropylene.
Furthermore, each first slant round hole and second slant round hole are the round hole that the slope set up, the inclination of first slant round hole, second slant round hole and every group through-hole between first slant round hole, the second slant round hole of forming inclination looks adaptation.
The diameters of the end faces of the first oblique round hole and the second oblique round hole are 10.5 mm.
Preferably, the inner side of the suspender anchor cup is provided with a round table-shaped cavity structure, and the large end of the cavity structure is arranged on the side far away from the suspender sealing cylinder; the anchor plate is a circular truncated cone-shaped structure with holes matched with the inner wall of the suspender anchor cup, and the large end of the anchor plate is arranged on one side far away from the suspender sealing cylinder.
Preferably, the outer sheath and the wire separating limiting plate are fixedly connected through a rubber gasket and a stainless steel hoop.
The embodiment of the invention also provides a processing method of the tied arch bridge suspender, which can optically detect the corrosion of the steel wire, and is characterized by comprising the following steps:
(1) winding a steel wire bundle consisting of a plurality of parallel steel wires by adopting a transparent polyester belt;
(2) transferring the steel wire bundle wrapped in the step (1) to an extrusion molding machine head, delivering hot plastic materials from the extrusion molding machine, and wrapping the hot plastic materials on the outer side of the steel wire bundle wrapped in the step (1) to form an inner layer sheath and an outer layer sheath; 6 detection channels are generated on the inner layer sheath in the extrusion molding process;
(3) processing a suspender anchor cup and a suspender sealing cylinder; the connecting ends of the suspender anchor cup and the suspender sealing cylinder are respectively provided with an internal thread and an external thread which are matched with each other, and the suspender anchor cup and the suspender sealing cylinder are fixedly connected through the internal thread and the external thread; processing an anchor plate and a wire dividing limiting plate, wherein the corresponding positions of the anchor plate and the wire dividing limiting plate are respectively provided with a first inclined round hole and a second inclined round hole which are uniformly distributed and have the diameter of 10.5 mm;
(4) the steel wire bundle of the cable body passes through the suspender sealing cylinder and the suspender anchor cup, and the right end of the suspender anchor cup is exposed, and is fixedly connected with the wire separating limiting plate by adopting a rubber gasket and a stainless steel hoop;
(5) dividing the steel wire bundle of the cable body through the wire dividing limiting plate, and penetrating through the corresponding steel wire positioning hole on the anchor plate;
(6) putting each steel wire pier head of the steel wire bundle on the right end face of the anchor plate;
(7) transparent tubes are inserted into the first oblique round holes and the second oblique round holes corresponding to the anchor plate and the wire separating limiting plate;
(8) pulling the steel wire bundle to relatively move left, and tightly pushing the anchor plate and the hanger rod anchor cup;
(9) installing a rubber ring and a metal sealing ring of a sealing cylinder;
(10) the end sealing plate of the anchor cup is fixedly arranged at the rightmost side of the anchor cup of the suspender.
The method for processing the tied arch bridge suspender capable of optically detecting the corrosion of the steel wire as claimed in claim 1, wherein a transparent pipe end protective sleeve is sleeved on one end of the transparent pipe outside the anchor plate.
The technical scheme of the invention has the following beneficial effects:
according to the tied arch bridge suspender capable of optically detecting the corrosion of the steel wire and the tied arch bridge suspender prepared by the processing method, six observation channels which are uniformly distributed and continuously run through and have the diameter of 8mm are formed in the suspender, and the optical fiber endoscope with the diameter of 4mm is matched for use, so that the corrosion condition of the steel wire in the suspender can be comprehensively and directly optically detected, and whether the steel wire in the suspender is corroded or not can be checked; the invention can fundamentally solve the problem that the corrosion condition of the steel wire inside the suspender can not be detected, and the optical detection method is adopted to detect whether the inside of the suspender is rusted or not, thus being simple, visual and accurate.
The transparent polyester belt, the transparent modified polypropylene inner layer sheath, the transparent pipe and other materials adopted by the invention have mature forming process and good performance, and as the inner layer sheath of the key part of the suspender, the transparent polypropylene material has low price and good engineering performance and can meet most of using environments except extremely low temperature.
Drawings
FIG. 1 is a schematic view of the structure of either end of a conventional boom commonly used in the background of the invention; FIG. 1A is a cross-sectional view of a prior art boom of the background art; FIG. 1B is a cross-sectional view A-A of FIG. 1; FIG. 1C is a cross-sectional view B-B of FIG. 1; FIG. 1D is a cross-sectional view C-C of FIG. 1.
FIG. 2 is a schematic structural diagram of either end of a tied arch bridge boom for optically detecting steel wire corrosion according to an embodiment of the present invention; FIG. 2A is a cross-sectional view of a tied arch bridge boom for optically detecting corrosion of a steel wire according to the present invention; FIG. 2B is a cross-sectional view A-A of FIG. 2; FIG. 2C is a cross-sectional view B-B of FIG. 2; fig. 2D is a cross-sectional view C-C of fig. 2.
Fig. 3 is a process diagram of a method for processing a tied arch bridge hanger bar capable of optically detecting steel wire corrosion according to an embodiment of the present invention.
Description of reference numerals: 1. a steel wire bundle; 2. wrapping a wrapping belt; 3. an inner jacket; 4. an outer sheath; 5. a boom seal cartridge; 6. a filament separating limit plate; 7. a boom anchor cup; 8. an anchor plate; 9. a steel wire pier head; 10. a rubber ring; 11. a metal seal ring; 12. an anchor cup end sealing plate; 13. a detection channel; 14. a rubber gasket; 15. a stainless steel hoop; 16. a transparent tube; 17. the end part of the transparent tube is protected.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A tied arch bridge suspender capable of optically detecting steel wire corrosion comprises a cable body and two suspender anchoring structures arranged at two ends of the cable body, wherein the two suspender anchoring structures are fixedly connected with an arch bridge; the suspender anchoring structure comprises suspender anchor cups 7 which are mutually connected and a suspender sealing cylinder 5 which is fixedly connected with the suspender anchor cups 7, wherein an anchor plate 8 is arranged at one end of each suspender anchor cup 7, which is far away from the suspender sealing cylinder 5, an anchor cup end part sealing plate 12 is arranged at the outermost side end of each suspender anchor cup 7, and a devillicate limiting plate 6 is arranged at one side of each suspender sealing cylinder 5, which is close to each suspender anchor cup 7; a metal sealing ring 11 and a rubber ring 10 are arranged on one side of the suspender sealing cylinder 5 far away from the suspender anchor cup 7; the cable body comprises a steel wire bundle 1 formed by a plurality of parallel steel wires; the outer side of the steel wire bundle 1 is wrapped with a wrapping belt 2, the outer side of the wrapping belt 2 is sleeved with an inner layer sheath 3, six detection channels 13 are annularly and uniformly distributed on the inner layer sheath 3 in a direction parallel to the steel wire bundle 1, the outer side of the inner layer sheath 3 is sleeved with an outer layer sheath 4, a plurality of steel wire positioning holes for fixing the parallel steel wires of the steel wire bundle 1 are formed in the anchor plate 8, six first oblique circular holes are annularly and uniformly distributed on the periphery of the plurality of steel wire positioning holes in the anchor plate 8, steel wire through holes for the steel wires of the steel wire bundle 1 to respectively pass through are formed in the wire separating limiting plate 6, six second oblique circular holes are annularly and uniformly distributed on the outer side of the steel wire through holes in the wire separating limiting plate 6, and the six second oblique circular holes correspond to; six transparent tubes 16 are arranged in the hanger rod anchor cup 7 in parallel with the trend of the steel wire, one ends of the transparent tubes 16 are inserted into the second oblique round holes, and the other ends of the transparent tubes penetrate through the first oblique round holes on the anchor plate 8 and extend to the outer side of the anchor plate 8.
In a further embodiment, the wrapping tape 2 is a transparent polyester tape.
In a further embodiment, the six first oblique circular holes and the six second oblique circular holes respectively form six groups of through holes, and the first oblique circular hole and the second circular hole in each group of through holes are located in the same vertical plane.
In a further embodiment, the inner sheath 3 is made of transparent modified polypropylene, and the diameter of the
In a further embodiment, each of the first oblique circular holes and the second oblique circular holes are obliquely arranged circular holes, and the inclination angles of the first oblique circular holes and the second oblique circular holes are matched with the inclination angle formed between the first oblique circular holes and the second oblique circular holes in each group of through holes.
The diameters of the end faces of the first oblique round hole and the second oblique round hole are 10.5 mm.
Preferably, the inner side of the
Preferably, the
As shown in fig. 3, an embodiment of the present invention further provides a method for processing a tied arch bridge boom capable of optically detecting corrosion of a steel wire, including the following steps:
(1) a transparent polyester belt (a wrapping belt 2) is adopted to wrap a steel wire bundle 1 formed by a plurality of parallel steel wires;
(2) transferring the steel wire bundle 1 wrapped in the step (1) to an extrusion molding machine head, delivering hot plastic materials from the extrusion molding machine, and wrapping the hot plastic materials on the outer side of the steel wire bundle wrapped in the step (1) to form an inner layer sheath and an outer layer sheath; 6 detection channels are generated on the inner layer sheath in the extrusion molding process;
(3) processing a
(4) as shown in fig. 3C, the steel wire bundle of the cable body passes through the
(5) as shown in fig. 3D, the steel wire bundle 1 of the cable body is divided by the wire
(6) as shown in fig. 3E, each wire of the wire bundle 1 is butted against the right end face of the anchor plate;
(7) as shown in fig. 3F, transparent tubes are inserted into the first oblique circular holes and the second oblique circular holes corresponding to the
(8) as shown in fig. 3G, the steel wire bundle 1 is pulled to move left relatively, and the
(9) as shown in fig. 3H, the seal
(10) the anchor cup
In a further embodiment, the
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
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